WO2004019198A1

WO2004019198A1 - Pen-type computer input device

Info

Publication number: WO2004019198A1
Application number: PCT/JP2003/010641
Authority: WO
Inventors: Taizo Saito
Original assignee: Taizo Saito
Priority date: 2002-08-26
Filing date: 2003-08-22
Publication date: 2004-03-04
Also published as: JP2004086462A; WO2004019198B1

Abstract

A pen-type computer input device includes a pen-type computer input device main body (1) and a sensor (4) for optically reading the relative shift direction and the shift amount of the input device main body and a read surface (3). The pen-type computer input device further includes a first focusing lens (7) arranged at the tip end of the input device main body for focusing an image on the read surface on the sensor, a second focusing lens (8) and a reflection mirror (9) arranged between the first focusing lens and the sensor. The side of an IC package (5) on which the sensor is mounted is arranged in the longitudinal direction of the input device main body and there is provided a light source for illuminating the read surface. Light of the light source is collected by a collective lens and the first focusing lens so as to illuminate the read surface. There is provided a shift output signal processing section for processing the data read by the sensor into a cursor shift output signal. Thus, it is possible to provide a small-size input device whose pen tip can easily be seen so as to improve operationality.

Description

Description Pen-type computer input device

Technical field

The present invention relates to a pen-type computer single input device for moving a force and inputting a figure in a system such as a personal computer.

Background art

In recent years, with the rapid spread of personal computers, various types of mice, which are one of the computer input devices, have been developed according to their uses. The most widespread shape shown in Fig. 7 (b), which is wrapped in the palm of the hand, held, moved on a desk, etc., and the cursor moves on the monitor of the computer by the amount of movement. Used the wrist or arm of a human to move the mouse to move the cursor, and there was no problem selecting or clicking the icon on the monitor. However, detailed input work was required to input figures and curves, and this was not suitable because it was not possible to use a fingertip that would normally use a vane to draw a picture. In addition, in the conventional evening-type input device as shown in FIG. 10, the ben portion 51 can be configured to be sufficiently thin and a fingertip can be used, which is a fine input operation. It is also suitable for inputting figures and curves, but the sensor part 52 is the input work surface itself, which is expensive because of its large surface shape. The problems of making these conventional computer input devices into pen-type computer single-input devices and the problems of the conventional pen-type computer input devices that should have been devised as solutions are described.

As a first prior art example, FIG. 7 (a) is described in U.S. Pat. No. 6,282,882. FIG. 2 is a side cross-sectional configuration diagram of an element part of a reading optical system of an optical mouse which is a computer input device on-board. FIG. 7 (b) is an external view thereof, and FIG. 7 (c) is a rear view thereof. Fig. 7 (d) is a cross-sectional side view of an optical mouse actually commercialized based on the present invention.

Next, a basic configuration of the optical mouse will be described with reference to FIG. 7 (a). '3 is a reading surface such as a mouse pad for operating the optical mouse body 31 shown in FIG. 7 (b) to read the relative movement with respect to the optical mouse body 31. It is. Reference numeral 4 denotes a sensor for optically reading the relative movement direction and movement amount between the optical mouse body 31 and the reading surface 3, and reference numeral 5 denotes an IC package of the sensor 4. Reference numeral 8 denotes an imaging lens, which forms an image on the reading surface 3 on the sensor 4. The output signal of this sensor 14 is subjected to data processing to become output data of the amount of movement in the X and Y directions, and becomes a force output signal on the monitor of the computer, which is transmitted to the computer.

Further, the structure of an optical mouse according to a first conventional example will be described in detail. 10 is a light source for illuminating the reading surface. The light from one light source illuminates the reading surface 3 by the condenser lens 11. Here, usually, as the light source 10, LED is used based on the size, output, wavelength sensitivity of the sensor, and the like. Then, the illuminated light is reflected by the reading surface 3, transmitted through the imaging lens 8, and guided to the sensor 4.

Next, the reading operation will be described. In the center of FIG. 7 (c), there is a circular window 32 through which the light condensed from the light source 10 exits, and the light emitted from the window illuminates the reading surface 3, and then the reading surface The light is reflected by 3 and transmitted through the imaging lens 8 to be guided to the sensor 14 to form an image. The sensor 4 is a two-dimensional image sensor, and when the optical mouse body is moved over the reading surface 3 by a human hand, the image changes, and a continuous image is taken at a fixed cycle, and each image is taken. Keep track of changes. The amount of change is represented by the coordinates in the X and Y directions by a data processing unit (not shown). It is converted into each movement amount, and it is converted into the movement output signal of the cursor on the monitor of the computer.

Next, FIG. 7 (d) is a side sectional view of an optical mouse manufactured based on U.S. Pat.No. 6,281,882 which is the first conventional example. The configuration will be described. Similar to the basic configuration described in the US patent of FIG. 7 (a), 4 is a sensor and 5 is its IC package. Reference numeral 8 denotes an imaging lens, reference numeral 3 denotes a reading surface, and reference numeral 10 denotes a light source. The LED is used as shown in FIG. 7 (b). Reference numeral 1 1 denotes a condenser lens that collects light from the light source and illuminates the reading surface. 33 and 34 are reflecting surfaces for guiding the light of the light source to the reading surface. Light emitted from the LED as the light source 10 is condensed by the condenser lens 11 and then reflected by the reflecting surfaces 33 and 34 to illuminate the reading surface 3. The illuminated light is reflected on the reading surface, passes through the imaging lens 8, and is guided onto the sensor.

Here, the difference from the basic structure of the invention described in the US patent of FIG. 7 (a) is that the reflecting surfaces 33 and 34 are provided. The reason for providing the reflecting surfaces 33 and 34 will be described below. The height of the optical mouse body 31 from the reading surface 3 is limited as a product because it is wrapped in the palm of the hand, and naturally the height of the reading surface from the IC package is also limited. The illumination of the reading surface 3 must illuminate the gap between the imaging lens 8 and the reading surface from an oblique side surface. In the case of the invention described in the US patent of FIG. 7 (a), it seems that there is a space that can be illuminated from an oblique direction. However, in the case of the commercialized optical mouse shown in Fig. 7 (d), the LED, which is the light source 10, has a size, and its light flux also has a size. If the light is directly illuminated at the distance between the imaging lens 8 and the reading surface, the luminous flux is easily blocked by the IC package 5. Therefore, in the commercialized configuration shown in FIG. 7 (d), by providing two reflecting surfaces 33 and 34 between the reading surface 3 and the light source 10, the reading surface 3 is integrated with the IC package 5. It can be illuminated from the side without being obstructed. The above is the configuration of the first conventional example, This is the reading operation of the optical mouse.

As a second conventional example, FIG. 8 (a) is an external view of a pen-type computer input device described in Japanese Patent Application Laid-Open No. 9-162439, and FIG. It is principal part sectional drawing of the above.

The second conventional example is a pen-type computer input device in which a pen-tip-shaped attachment 43 is detachably provided on the track pole 41 of the input device body 1. . Reference numeral 42 denotes a sensor unit, which is fixed to the input device main body 1, and includes an IC package 5 provided with a sensor for reading the data (direction and movement amount) of the X and Y coordinates from the rotational movement of the track pole 41, and It is composed of a substrate 6 on which the IC package 5 is mounted.

Here, when realizing a drawing function from a normal mouse function, the attachment 43 is attached to the input device body 1. As shown in FIG. 8 (b), the tip of the attachment 43 can be freely rolled in the shape of a pen point, and a sphere 4 4 having a smaller diameter than the track ball 4 1. Having. Attachment 43 and input device main body 1 are fitted with fitting concave portion 45 at the lower end of input device main body 1. Attachment 43 is provided with a hook-shaped fitting convex portion 46 for fitting into this fitting concave portion 45 so that it can be easily pressed and inserted into input device body 1 and fitted. It has become.

In addition, the fitting concave portion 45 supports the spherical body 4 4 via the fitting convex portion 4 6 fitted to the fitting concave portion 4 5 so as to freely roll, and does not hinder the rolling of the track pole 4 1. It is configured so that it can be pressed against the track pole 4 1.

When the attachment 43 is attached to the input device body 1, the track pole 41 and the sphere 44 come into contact with each other, and when the sphere 44 rolls, the track pole 41 also rolls accordingly. It behaves like a normal mouse.

As described above, the attachment 43 of the second conventional example includes a sphere 44 having a conical shape with a thinner tip and a smaller ball than the track pole 41. By attaching the attachment 44 to the input device body 1, the pen tip is made smaller so as to improve the drawing performance. Disclosure of the invention

Problems that the invention is trying to solve

The first conventional optical mouse has a standard and most popular shape and is wrapped in the palm of the hand for operation.However, there is an example in which a pen-type computer-input device was configured with this configuration. 9 (a), wherein the surface of the IC package 5 is perpendicular to the optical axis connecting a first imaging lens 7 and a second imaging lens 8 described later, that is, the surface of the computer input device body 1. It is configured to be arranged on a plane perpendicular to the longitudinal direction. In this configuration, in order to easily trace a curve or a figure, it is necessary to reduce the angle of the conical shape of the pen tip so that the pen tip can be easily seen by an input operator. To do so, speaking in the first conventional example, the IC package 5 of the sensor 4 shown in FIG. 7A is made smaller and the focal length of the imaging lens 8 is made longer than in the first conventional example. It is necessary to separate the IC package 5 of the sensor 4 from the reading surface. Here, in the case of FIG. 9 (a), for convenience, a first imaging lens 7 is provided at the pen tip in a manner similar to that of the later-described invention for the sake of comparison, and the first imaging lens 7 and the sensor are provided. Between 4, a second imaging lens 8 is provided. Although the focal length of these imaging lenses is lengthened to reduce the angle of the conical shape of the pen tip, the IC package 5 can also be made smaller due to IC manufacturing conditions and lead dimensions. There is a limit. Therefore, as shown in FIG. 9 (c), since the surface of the IC package 5 is arranged on a surface perpendicular to the longitudinal direction of the pen, the inner diameter of the input device main body 1 is at least the square of the IC package 5. More than the diagonal of the surface. In addition, as shown in FIG. 9 (b), the light amount is also reduced by reducing the size of the LED, which is the light source 10 for illuminating the reading surface 3, and the size of the condenser lens 11 for condensing the light. There is a limit from the conditions. In this way, the pen-type In order to construct a computer input device of this type, space for these basic element parts is required around the IC package 5 of the sensor 14, and in order to reduce the angle of the conical shape of the nib, as described above, Even when the focal length of the imaging lens 8 is increased, the pen shaft is likely to be thickened by these element parts. As described above, the fact that the surface of the IC package 5 is arranged on the surface orthogonal to the longitudinal direction of the pen-type computer-input device main body means that the inner diameter of the input device main body 1 is the square of the IC package 5 as described above. Or more than the diagonal of the surface. Therefore, it is not the best configuration for making the pen-type input device main body 1 thinner by effectively utilizing the dimensions of the sides that are smaller than the diagonal, and a problem that it is difficult to hold easily occurs. Also, in order to reduce the size of the IC package 5, only the sensor 4 for reading and a minimum processing circuit can be packaged, and other processing circuits must be packaged in another IC, which increases costs. This is also a problem.

In the case of the second conventional example shown in FIG. 8 (b), a pen-tip-shaped attachment 43 is detachably provided at the trackball 41 of the pen-type computer input device body 1. It is possible to reduce the diameter of the sphere 44 at the tip of the pen. However, since the surface of the sensor unit 42 is a surface orthogonal to the axis connecting the sphere 44 and the center of the trackball 41, and is disposed immediately above the track pole 41, In Fig. 9 (a), which is an example in which the conventional example of Fig. 1 is configured as a pen-type computer input device, the pen shaft is thickened, as in the case of the IC package 5 requiring space. As described above, since the IC package 5 cannot be sufficiently separated from the pen tip only by the track pole 41 and the sphere 44 at the tip of the pen, the conical angle of the pen tip is large, and the pole of the pen tip is However, there is a problem that the input device becomes invisible to input workers and is not a sufficient configuration as an input device used for tracing curves and figures. -The present invention solves the above-mentioned problems of the prior art, and has a pen-shaped conical shape. An object of the present invention is to provide a pen-type computer input device that has a small angle, is easy to see the pen tip from an input operator, is optimal for tracing curves and figures, and has a thin input device body and is easy to hold.

Next, in the optical mouse shown in FIGS. 7 (a) to 7 (d), which is wrapped and operated with the hand of the first conventional example, the window for illuminating the reading surface is always operated with the window facing downward. Even if you release your hand, it will face down on a desk. However, as described above, in the case of FIGS. 9 (a) to 9 (d), which have the same configuration as the first conventional example and a pen-type computer-input device, when the hands are released, , And the light leaks to the side. In addition, since it is pen-shaped, it may be inadvertently directed to human eyes, and depending on the amount of light, there is a problem of harm to human eyes.

Further, since the input device main body 1 of the pen-type computer input device of the second conventional example shown in FIGS. 8 (a) and 8 (b) has a linear shape, Pointing When holding it with your finger and middle finger, the angle is tilted depending on how you hold it, and the periphery of the attachment 43, which is the holding part of the sphere 44 of the pen tip, comes into contact with the surface of the moving mouse pad 3 of the sphere 44. However, there was also a problem that the sphere 4 4 did not rotate sufficiently. 9 (a) to 9 (d), in which the first conventional example is configured as a pen-type computer input device, the image forming lens of the pen tip is formed when the input device main body 1 is tilted. 7 is slightly deviated from the reading surface and defocused, which may affect the reading performance. '

Further, an interface cable 29 connecting the pen type computer input device of the second conventional example shown in FIG. 8 (a) to the computer main body is connected to the end of the input device main body 1 on the side opposite to the pen tip. When the pen tip is moved finely with the fingertip, the interface cable 29 at the opposite end also swings finely in accordance with the movement. This swing depends on the distance from the position where the finger holds the input device main body 1 to the pen tip, and from the position where the finger holds the input device main body 1 to the side opposite to the pen tip where the interface cable 29 is pulled out. Since the distance to the end is naturally longer, it will be enlarged. If the flexibility of the interface cable 29 is not sufficient, the swing of the interface cable 29 has a problem that the smooth operation of the input device body is hindered.

The invention's effect

According to the first aspect of the present invention, a pen-type computer input device body, a sensor for optically reading a relative movement direction and a movement amount of the input device body and a reading surface, and the input device A first imaging lens that focuses the image on the reading surface on the sensor at the tip of the main body, and a second imaging lens and a reflection mirror are placed between the first imaging lens and the sensor. The surface of the IC package on which the sensor is mounted is arranged in the longitudinal direction of the main body of the pen-type computer input device, and the focal length of the optical system formed by the first imaging lens and the second imaging lens By making the length longer than before, the IC package of the sensor can be made farther from the pen tip, and the angle of the conical shape of the pen tip can be reduced. Therefore, the pen tip becomes easy for the input operator to see, and it becomes easy to input and trace figures. In addition, it is said that the pen-shape body becomes thicker by arranging the surface of the IC package in the longitudinal direction of the pen-type computer-input device main body. This problem can be solved.

According to the invention set forth in claim 2, according to the invention set forth in claim 1, the optical waveguide such as an optical fiber is disposed between the condenser lens and the first imaging lens. I have. For this reason, it is possible to bend the optical axis from the condenser lens to the first imaging lens, thereby increasing the degree of freedom in the arrangement of the light source and the condenser lens, and further increasing the thickness of the pen shaft body. Can be solved.

According to the third aspect of the present invention, in the first aspect of the present invention, the reflection mirror is a half mirror, and the light from the light source is one or more. By illuminating the reading surface by passing through the condenser lens and the half mirror, and further passing through the second imaging lens and the first imaging lens, the light source, the condenser lens, the half mirror, and the Since the second imaging lens and the first imaging lens are arranged on one straight line, the configuration around the half mirror can be further simplified, thus solving the problem that the pen shaft body becomes thicker. Can be. However, since the reflection mirror is a half mirror, the amount of light received and emitted by the sensor is 1 ノ 4 just considering the effect of the half mirror. However, since the light source can be arranged at the center, which is the center axis of the input device main body, a light source larger than the inventions of claims 1 and 2 can be used. That is, a light source that is brighter in terms of light quantity can be used. Therefore, the invention of claims 1 and 2 is used in relation to the dimensions and arrangement with other components constituting the input device, but the invention of claim 3 is used separately. be able to.

According to the invention set forth in claim 4, in the invention set forth in claim 3, the light from the light source is focused by the condenser lens at the position equivalent to the position of the sensor on the image side of the imaging optical system. This makes it possible to efficiently take in the light from the light source.However, the light source is located at a position closer to the light source than the second imaging lens because the light is focused by the condenser lens. It is farther from the pen tip than the invention of the paragraph. Therefore, when the light amount of the light source is sufficient, it is possible to reduce the size of the input device body in the longitudinal direction by adopting the configuration of the invention set forth in claim 3, and on the other hand, when the input device body has sufficient dimensions in the longitudinal direction, By efficiently taking in the light of the light source as the constitution of the invention of the fourth aspect of the present invention, an inexpensive light source with a small light amount can be used, which can contribute to cost reduction. In this way, depending on whether to reduce the size or reduce the cost, it is possible to appropriately use the configuration of the invention of claim 3 or the configuration of the invention of claim 4 as appropriate. .

According to the invention of claim 5, in the invention according to claims 1 to 4, the pen tip portion having the first imaging lens arranged in the case is connected to an input device. By making it detachable and replaceable from the body, it can be easily replaced even if the imaging lens comes into contact with the reading surface during reading, causing scratches and wear and degrading the reading performance.

According to the invention set forth in claim 6, in the inventions set forth in claims 1 to 5, a tilt switch is provided in the input device, and a light source is provided when the input device is tilted. Turning off the power can inadvertently direct the user's eyes because of the pen shape, and can solve the problem of harm to human eyes depending on the amount of light.

According to the invention as set forth in claim 7, the pen-shaped computer input device has a convex portion which fits into the crotch of the thumb and the forefinger when the input device main body is held by a finger in a longitudinal direction of the main body. By providing the unit, the input device body can be prevented from tilting more than necessary. Thus, when the thumb, index finger, and middle finger are held, the angle is tilted depending on how they are held, and the tip of the first imaging lens 7 of the pen tip portion 2 is slightly away from the reading surface and defocused, which hinders reading performance. It solves the problem that causes

According to the invention as set forth in claim 8, the interface cable to be connected to the computer main body is pulled out from the longitudinal side surface of the pen-type computer input device main body, so that the interface cable is flexible. It solves the problem of hindering the smooth operation of the mouse when the sex is not sufficient.

According to the ninth aspect of the present invention, there is provided a cylindrical body which includes the input device main body of the pen-type computer input device and serves as an outer shell, and the input device main body is provided with a predetermined amount in the axial direction in the cylindrical body. The input device main body is pressed by a predetermined pressure toward the pen tip side by a spring, and an input switch is provided on the input device main body or the cylinder, the pen tip is brought into contact with the surface, and the cylinder is inserted into the pen. When the cylinder is pressed to the tip side, the cylinder moves to the pen tip side, and the contact portion of the cylinder or the input switch of the input device main body interlocks with the movement of the cylinder to move the input switch. By turning on and off Switch input work can be performed while holding the pen.

According to the tenth aspect of the present invention, in the pen-type computer-input device according to the ninth aspect, a projection is provided on a part of the outer shell in the longitudinal direction. Thus, the input device body can be prevented from tilting more than necessary. As a result, when the thumb, index finger, and middle finger are held, the angle is tilted depending on how they are held, and the tip of the first imaging lens at the tip of the tip is slightly away from the reading surface and defocused. Can solve problems that hinder people.

According to the eleventh aspect of the present invention, in the tablet-type computer input device according to the ninth aspect, the outer shell is connected to the computer main body from a side surface of the cylindrical body in the longitudinal axis direction. This solves the problem that the smooth operation of the mouse is hindered when the interface cable is not flexible enough by pulling out the interface cable.

According to the invention of claim 12, in the pen-type computer input device, the sensor uses a two-dimensional image sensor, and outputs a force output to a personal computer. By installing an image signal transmission section and a switch for moving the output signal of the force sol, which is a signal to the interface with the computer, and an output switch of the image output signal, Image input and bar code input, which were not possible with a conventional optical mouse, are now possible with the pen-type feature that makes it easy to read images. In addition, since the moving output signal processing unit determines whether the scanning is in the X direction or the Y direction at the start of scanning, it is not necessary to specify the scanning direction using icons on the computer monitor. Input becomes possible.

According to the invention as set forth in claim 13, when performing image input using a pen-type computer input device, when the input device is scanned in the X direction, the input device may meander in the Y direction. When the scanning deviation is corrected and the scanning is performed in the Y direction, an image signal for correcting the scanning deviation due to the meandering in the X direction is provided by a γ deviation correcting unit. With this arrangement, the pen's image input scanning is slightly curved, and even if there is a meandering, it is possible to detect the meandering and distortion while scanning, and perform correction processing in a straight line. Can be obtained. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 (a) is a cross-sectional view of a pen-type computer input device of the invention according to the first embodiment.

FIG. 1 (b) is a vertical sectional view of a pen-type computer input device of the invention according to the first embodiment.

Fig. 1 (c) is a cross-sectional view taken along the line A-A in Fig. 1 (a).

FIG. 1 (d) is an external view of a pen-type computer input device of the invention according to the first embodiment.

FIG. 1 (e) is a diagram in which the pen-type computer input device of the invention of the first embodiment is manually operated.

FIG. 1 (f) is a partial cross-sectional view of a pen-type computer input device pen tip of the invention according to the first embodiment.

FIG. 2 (a) is a cross-sectional view of a pen-type computer input device of the invention according to the second embodiment.

FIG. 2 (b) is a longitudinal sectional view of a pen-type computer input device of the invention according to the second embodiment.

Fig. 2 (c) is a sectional view taken along the line A-A in Fig. 2 (a).

FIG. 3 (a) is a cross-sectional view of a pen-type computer input device of the invention according to the third embodiment.

FIG. 3 (b) is a longitudinal sectional view of a pen-type computer input device of the invention according to the third embodiment.

Fig. 3 (c) is a sectional view taken along the line A-A of Fig. 3 (a). FIG. 4 (a) is a sectional view of a pen-type computer-input device according to the fourth embodiment of the present invention.

FIG. 4 (b) is a longitudinal sectional view of a pen-type computer input device of the invention according to the fourth embodiment.

Fig. 4 (c) is a sectional view taken along the line A-A in Fig. 4 (a).

FIG. 4 (d) is a diagram illustrating an optical system for reading and illumination of a pen-type computer input device according to the invention of the third embodiment.

FIG. 4 (e) is a diagram for explaining an optical system for reading and illumination of a pen-type computer input device of the invention of the fourth embodiment.

Fifth (a) is a cross-sectional view of the pen-type computer input device of the invention of the fifth embodiment.

FIG. 5 (b) is a longitudinal sectional view of a pen-type computer input device according to the fifth embodiment of the invention.

Fig. 5 (c) is a sectional view taken along the line A-A in Fig. 5 (a).

FIG. 5 (d) is an external view of a pen-type computer input device of the invention according to the fifth embodiment.

FIG. 6 (a) is a block diagram of a control circuit of a pen-type computer one-input device of the invention according to the sixth embodiment.

FIG. 6 (b) is a block diagram of a control circuit of the pen-type computer one-input device according to the sixth embodiment of the present invention when performing XY shift correction of an image signal.

FIG. 6 (c) is an external view of a pen-type computer input device of the invention according to the sixth embodiment.

FIG. 6 (d) shows the pen-shaped computer input device according to the sixth embodiment of the present invention, in which the pen is moved in a meandering manner without correcting the XY displacement of the image signal. It is an image figure. ' FIG. 6 (e) shows a pen-type computer input device according to the sixth embodiment of the present invention, in which the XY shift of the image signal is corrected and the pen scan is performed in a meandering manner. FIG. ·

FIG. 7 (a) is a side sectional configuration view of an element part of a reading optical system of an optical mouse described in US Pat. No. 6,281,882 as a first conventional example.

Fig. 7 (b) is an external view of the first conventional example.

Fig. 7 (c) is a rear view of the first conventional example.

FIG. 7 (d) is a side sectional view of an optical mouse commercialized based on the invention of the first conventional example.

FIG. 8 (a) is an external view of a pen-type computer-input device of the second conventional example. FIG. 8 (b) is a view of a pen tip of a pen-type computer-input device of the second conventional example. Part sectional view

Figure 9 (a) is a cross-sectional view of an example in which the first conventional example is configured as a pen-type computer input device.

Fig. 9 (b) is a longitudinal sectional view of an example in which the first conventional example is configured as a pen-type computer input device.

Fig. 9 (c) is a cross-sectional view taken along the line A-A in Fig. 9 (a), in which the first conventional example is configured as a pen-type computer input device.

Fig. 9 (d) is an external view of an example in which the first conventional example is configured as a pen-type computer input device.

Figure 10 shows a conventional evening-type input device.

Figure 11 is a cross-sectional view of the tilt switch.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First Embodiment FIG. 1A is a cross-sectional view of a pen-type computer input device according to a first embodiment of the present invention. FIG. 1 (b) is a longitudinal sectional view thereof. FIG. 1 (c) is a sectional view taken along line AA of FIG. 1 (a). Fig. 1 (d) is the external view. FIG. 1 (e) is a diagram in which the pen-type computer input device according to the first embodiment is manually operated. FIG. 1 (f) is a partial cross-sectional view of the pen tip. First, the overall configuration will be described. Reference numeral 1 denotes a pen-type convenience input device, 2 denotes a pen tip portion, and 3 denotes a pen tip portion 2 for contacting the pen tip portion 2 to optically read relative movement with the input device main body 1. This is the reading surface of the mouse pad and the like. Reference numeral 4 denotes a sensor for operating a pen-type computer input device to optically read the relative movement direction and the movement amount with respect to the reading surface 3.Here, FIG. 7 (a) to FIG. 7 (c) The same two-dimensional image sensor as the optical mouse described in U.S. Pat. Nos. 6,282,882 in FIG. 6 is used. The analog image output signal of this sensor 4 is subjected to data processing. It becomes the output data of the amount of movement in the X and Y directions and becomes the force-sol movement output signal on the computer monitor.

Next, the structure of the pen-type computer input device of the first embodiment will be described in detail. A first imaging lens 7 for forming an image on the reading surface 3 on the sensor 14 is disposed at the tip of the input device main body 1, and a first imaging lens 7 between the first imaging lens 7 and the sensor 4 is provided. A second imaging lens 8 and a reflection mirror 9 are arranged in the camera. A light source 10 illuminates the reading surface 3 ′ of the sensor 14 ′. The light of the light source 10 is condensed on the reading surface 3 by the condensing lens 11 and the first imaging lens. 7 and illuminates the reading surface 3. The light source 10 usually uses an LED because of the relationship between the size and the output, and is configured as a pair with the condenser lens 11. In the first embodiment, the light source 10 is connected to the reflection mirror 9 through the second mirror. Two pairs are arranged on both sides of the optical axis connecting the first imaging lens 7. However, if the reading performance of sensor 14 is within the range that does not affect the amount of light received by sensor 4, a pair of light source 10 and condenser lens 11 may be arranged on one side of reflection mirror 9. . The light illuminated by the light source 10 is reflected by the reading surface 3 and is reflected by the first imaging lens 7 and the second imaging lens 7. The light passes through the imaging lens 8, is reflected by the reflection mirror 9, and is guided to the sensor 14. Further, the surface of the IC package 5 on which the sensor 4 is mounted is arranged in the longitudinal direction of the main body of the pen-type computer overnight input device. Reference numeral 6 denotes a board on which the IC package 5 is mounted, and the board 6 is naturally disposed in the longitudinal direction of the pen-type computer input device body. In addition to the IC package 5 of the sensor 4, a signal processing IC and circuit components for processing the image output signal read by the sensor 1 into a cursor output signal on the monitor of the computer are also provided on the substrate 6. Has been implemented.

Thus, in brief, in the first embodiment, the second imaging lens 8 and the reflection mirror 9 are arranged between the first imaging lens 7 and the sensor 4, and the first imaging is performed. By making the focal length of the optical system formed by the image lens 7 and the second imaging lens 8 longer than that of the first conventional example shown in Fig. 7 ( _a ), the IC package 5 of the sensor 4 From the pen tip, and the angle of the pen tip conical shape can be reduced. Therefore, the pen tip becomes easy for the input operator to see, and it becomes easy to input and trace figures. By adopting these configurations and at least placing the surface of the Ic package 5 on which the sensor ₄ is mounted in the longitudinal direction of the main body of the pen-type computer input device, the configuration shown in FIG. As can be seen from the cross-sectional view, the inner diameter of the input device main body 1 is within a range slightly larger than the length of one side of the IC package 5. On the other hand, in the case of FIGS. 9 (a) to 9 (d) in which the pen type computer input device is used in the configuration of the conventional first embodiment, the surface of the IC package 5 on which the sensor 4 is mounted is Since the computer input device is placed on a surface orthogonal to the longitudinal direction of the main unit, even if the IC package 5 is reduced from a rectangle to a square, the inner diameter of the input device main unit 1 will be as shown in Fig. 9 (c). As you can see, it is more than twice the length of one side. From this comparison, it is possible to solve the problem that the pen shaft itself becomes thicker by arranging the surface of the IC package 5 in the longitudinal direction of the main body of the vane type computer input device. Next, before describing a more detailed structure, a reading operation of the pen-type computer input device of the first embodiment will be described. The reading operation itself is the same as the computer input device described in US Pat. No. 6,281,882 in FIG. 7 (a). Light from the LED, which is the light source 10, is condensed by the condenser lens 11 and the first imaging lens 7, and illuminates the reading surface 3. After that, the illuminated light is reflected by the reading surface 3, returns to the first imaging lens 7 again, then enters the second imaging lens 8, and is reflected by the reflection mirror 9. Then, it is guided as an image of the reading surface 3 onto the sensor 4. Here, holding the input device body 1 with a finger of a person, pressing the pen tip against a reading surface 3 such as a mouse pad, and relatively moving the reading device 3 on the reading surface 3, the sensor 14 becomes 2 It is a dimensional image sensor that takes a continuous image of the surface of the reading surface 3 such as a mouse pad at a fixed period, and records changes in each image. The change amount is converted by the signal processing IC into the movement amount of each coordinate in the X direction and the Y direction, and is converted into a movement output signal of the cursor on the monitor of the computer.

Next, a more detailed structure of the pen tip 2 will be described with reference to FIG. 1 (f). A first imaging lens 7 is disposed at the tip of the pen-shaped computer input device main body 1. The first imaging lens 7 is fitted in a conical case 12 and is pen-shaped. It constitutes the front part 2. In the case of FIG. 1 (f), a male screw 1'2a is cut on the input device main body 1 side of the case 1 2 of the pen tip portion 2, and the input device main body 1 which is the mating side thereof is mounted. Has an internal thread 1a at the end. In use, the male screw 12a of the case 12 and the female screw 1a of the input device body 1 are screwed together. Here, the pen-type computer input device is used for a long time or carelessly, and the first coupling lens 7 at the tip of the pen tip portion 2 is scratched or worn to read performance. If the image quality deteriorates, the first imaging lens 7 needs to be replaced. In this case, with the above-described structure, the pen tip 2 can be attached to and detached from the input device main body 1 so that the pen tip can be quickly replaced. 2 can be replaced to restore performance. The connection between the pen tip portion 2 and the input device main body 1 may be a connection such as a snap-fit with a combination of irregularities, in addition to the screw connection as described above.

Next, the light source switch will be described. A tilt switch 27 is provided in the pen-type computer-input device main body 1 and connected to the light source 10 so that the power of the light source 10 can be turned off when the input device 1 is tilted. Fig. 11 is an example of this inclined switch 27, and is a cross-sectional view of model number DSA of Nippon Switchgear Industry Co., Ltd. 7 1 is the contact terminal A, 7 2 is the contact terminal B, 7 3 is the large contact pole, and 7 4 is the small contact pole. The terminal B 72 is in a conductive state via the large contact terminal pole 73 and the small contact terminal ball 74. When the inclined switch 27 is tilted sideways, either the large contact pole 73 or the small contact pole 74 moves, and the contact terminals A 71 and B 72 lose conductivity, and are turned off. In this way, the tilt switch 27 is installed and connected to the light source 10 to form a pen, so it may be inadvertently directed to human eyes. Solve harmful problems.

Further, as shown in FIGS. 1 (d) and 1 (e), when the input device main body 1 is held by the thumb, the forefinger, and the middle finger in a part of the longitudinal direction, the flap is held between the thumb and the forefinger. Protrusions 28 are provided so as to fit. This can prevent the input device main body 1 from being tilted more than necessary. This solves the problem that the input device body 1 is tilted depending on the holding method, the tip of the first imaging lens 7 of the pen tip 2 is slightly away from the reading surface 3 and defocused, and the reading performance is hindered. be able to.

Next, the operability of the pen-type computer input device according to the first embodiment will be described. As described above, the interface device 29 for connecting the pen-type computer-input device of the second conventional example shown in FIG. 8 (b) to the computer main body is the same as the input device main body 1. From the end opposite the pen tip to the longitudinal direction Since the pen was pulled out, if the tip of the pen is moved finely with the fingertip, the interface cable 29 at the opposite end will also be finely shaken in accordance with the movement. This swing is caused by the distance from the position where the finger holds the input device body 1 to the pen tip, from the position where the finger holds the input device body 1 to the side opposite to the pen tip from which the interface cable 29 is pulled out. Since the distance to the part is naturally longer, it will be further enlarged. If the flexibility of the interface cable 29 is not sufficient, there is a problem that the swing of the interface cable 29 obstructs the smooth operation of the input device main body. Thus, in the first embodiment, the finger is pulled out of the input device by pulling out the interface cable 29 connected to the computer itself from the longitudinal side of the pen-type computer input device main body 1. Since the position where the interface cable 29 is pulled out from the position where the main body 1 is held can be made shorter than before, the swing of the interface cable 29 can be reduced. For this reason, even if the flexibility of the interface cable 29 is not sufficient, it is possible to solve a problem that hinders a smooth operation of the input device main body. ·

Second Embodiment FIG. 2 (a) is a cross-sectional view of a pen-type computer-input device according to a second embodiment of the present invention. FIG. 2 (b) is a longitudinal sectional view, and FIG. 2 (c) is a sectional view taken along line AA of FIG. 2 (a). The pen-type computer according to the second embodiment shown in FIGS. 1 (a) to 1 (c) is similar to the pen-type computer shown in FIGS. 1 (a) to 1 (c). An optical fiber 30 serving as an optical waveguide is arranged between the imaging lenses 7. In the case of the pen-type computer input device of the first embodiment, the pair of light sources 10 and the condenser lens 11 are located on both sides of the optical axis connecting the reflection mirror 9 to the 像 imaging lens 7. There are two pairs. Since the angle of incidence from these two pairs of light sources 10 to the first imaging lens 7 depends on the inner diameter of the input device body 1, it may be said that it is a pen type, so further miniaturization is required. The angle of incidence on the imaging lens is naturally determined. this Therefore, means for arranging the light source 10 and the condenser lens 11 with a high degree of freedom on the inner diameter of the input device main body 1 is required. As described above, as shown in FIG. In this embodiment, an optical fiber 130 serving as an optical waveguide is arranged between the second condenser lens 11b and the first imaging lens 7. For this reason, the optical axis from the second condenser lens 11b to the first imaging lens 7 can be bent, and the light source 10 and the first condenser lens 11a to be described later can be bent. However, the degree of freedom in the arrangement of the second condenser lens 11b can be increased, and the second condenser lens 11b can be housed in the inner diameter of the input device body 1 while contributing to downsizing.

Next, the condenser lens according to the second embodiment includes a first condenser lens 1 la and a second condenser lens 1 1 b, and the first condenser lens 1 la is The light of the light source 10 is condensed, and the light is focused once to reach the second condenser lens 11 b before reaching the second condenser lens 11. The second condenser lens 11b receives the light and emits the light to the optical fiber 1. At that time, the light is converted into parallel light and guided to the optical fiber 30.

Here, also in the second embodiment, similarly to the first embodiment, the detailed structure of the pen tip 2 and the structure in which the pen tip 2 is detachable and replaceable, Since the inclination switch 27 is connected to the light source 10 and the effect is the same, the description is omitted. In addition, a convex portion 28 is provided in a part of the input device main body 1 in the longitudinal direction so as to fit into the crotch of the thumb and forefinger when the thumb, forefinger and middle finger are held. The structure is the same as that of the first embodiment, and the structure in which the interface cable 29 connected to the computer is pulled out from the longitudinal side of the input device body 1 and its effect Are the same as those in the first embodiment, and a description thereof will be omitted.

Next, a reading operation of the pen-type computer-input device of the second embodiment will be described. The reading operation itself is based on the first embodiment, The configuration is the same except that the configuration of the illumination of the reading surface 3 described below is different. In other words, the light from the LED, which is the light source 10, is collected by the first condenser lens 1 la and then converges once to the second condenser lens 11, Guided to the second 'focusing lens 11b. The second condenser lens 11b receives the light and emits the light to the optical fiber 30. At that time, the light becomes parallel light and is guided to the end face of the optical fiber 130.

The light passing through the optical fiber 30 exits from the opposite end face, is condensed by the first imaging lens 7 and illuminates the reading surface 3. After that, the illuminated light is reflected by the reading surface 3 and returns to the first imaging lens 7 again, then passes through the second imaging lens 8 and is reflected by the reflection mirror 9. Then, it is guided as an image of the reading surface 3 onto the sensor 14. Here, the process of converting the output signal of the sensor 4 into a moving output signal of the cursor on the computer monitor by operating the input device body 1 with a human finger is described in the first embodiment. Is the same as

Third Embodiment FIG. 3 (a) is a cross-sectional view of a pen-type computer input device according to a third embodiment of the invention. FIG. 3 (b) is a longitudinal sectional view thereof. FIG. 3 (c) is a sectional view taken along line AA of FIG. 3 (a). In the third embodiment, the reflection mirror 9 of the first embodiment shown in FIG. 1 (a) is a half mirror 9b, and light from the light source 10 is It is configured to transmit through the half mirror 9 b and further transmit through the second imaging lens 8 and the first imaging lens 7, converge on the reading surface 3, and illuminate the reading surface 3. Things. Accordingly, in the case of the pen-type computer input device according to the first embodiment, the pair of light sources 10 and the condensing lens 11 transmit light from the reflecting mirror 9 to the first imaging lens 7. Although two pairs are arranged on both sides of the axis, in the case of the third embodiment, the light source 10, the condenser lens 11, the half mirror 9 b, the second imaging lens 8, and the first Since the image lenses 7 are arranged on one straight line, the configuration around the half mirror 9b can be further simplified. Therefore, the configuration can contribute to miniaturization. Next, comparing the amounts of light incident on the sensor 14 of the first embodiment and the third embodiment in terms of the amount of light incident on the sensor 14, the amount of light that reaches the reading surface 3 from the light source 10 is equal to that of the third embodiment. In the case of the form, the light emitted from the light source 10 is transmitted through the condenser lens 11 and then attenuated to 1 2 by the half mirror 9 b. After that, the light passes through the second imaging lens 8 and the first imaging lens 7, is reflected by the reading surface 3, passes through the first imaging lens 7 and the second imaging lens again, and then is transmitted again. Then, the light is reflected by the half mirror 9b and enters the sensor 14, but when reflected by the half mirror 9b, the light amount is attenuated to 1/2. Therefore, the amount of light reaching the sensor 14 is X X 1 in the third embodiment as compared to the first embodiment, even considering only the effect of the half mirror 9 b. / 2 = 1/4 light intensity. However, as described above, in the case of the third embodiment, it is possible to arrange the light source 10 to the first imaging lens 7 in a straight line. It can be placed at the center, which is the center axis of 1. Therefore, the size of the light source of the third embodiment can be larger than that of the first embodiment. That is, as compared with the light source 10 of the first embodiment, the light source 10 of the third embodiment can use a light source that is brighter in terms of light quantity. Therefore, it is possible to use either the first embodiment or the third embodiment depending on the relationship between the dimensions and the arrangement of the other parts included in the input device. ·

Here, the third embodiment is the same as in the first embodiment. The detailed structure of the pen tip 2 and the structure in which the pen tip 2 is detachable and replaceable, Since the inclination switch 27 is connected to the light source 10 and the effect is the same, the description is omitted. In addition, a convex portion 28 is provided in a part of the input device body 1 in the longitudinal direction so as to fit the crotch of the thumb and the forefinger when the thumb, the forefinger and the middle finger are held. Is the same as that of the first embodiment, and an interface cable 29 connected to the computer body is pulled out from the longitudinal side of the input device body 1. The structure and the effect thereof are the same as those of the first embodiment, and the description is omitted.

Next, a reading operation of the pen-type computer input device according to the third embodiment will be described. In this reading operation, the illumination from the light source 10 on the reading surface 3 read by the sensor 4 is different from that in the first embodiment. The light from the LED, which is the light source 10, is condensed by the condenser lens 11, passes through the half mirror 9 b, and further passes through the second imaging lens 8 and the first imaging lens. Light passes through the lens 7 and illuminates the reading surface 3 of the sensor 4. Thereafter, similarly to the first embodiment, the light illuminating the reading surface 3 is reflected on the reading surface 3 and returns to the first imaging lens 7 to be transmitted again. The light passes through the lens 8, is reflected by the half mirror 9 b, and is guided on the sensor 14 as an image of the reading surface 3. Here, the process of converting the output signal of the sensor into a moving output signal of the cursor on the monitor of the computer by operating the input device body 1 with a human finger is described in the first embodiment. It is the same as the form.

(Fourth Embodiment) FIG. 4 (a) is a cross-sectional view of a pen-type computer input device of the invention according to a fourth embodiment. FIG. 4 (b) is a longitudinal sectional view thereof. FIG. 4 (c) is a sectional view taken along line AA of FIG. 4 (a). In the fourth embodiment, the half mirror 9b is used similarly to the third embodiment. However, as described below, the second imaging from the light source 10 is performed. The change of the light flux up to the lens 8 is different from that of the third embodiment. In other words, in the case of the fourth embodiment, the light from the light source 10 is focused once by the focusing lens 11 and then focused once. Focused on the light source side of the lens 8 and equivalent to the position of the sensor 4 on the image side of the imaging optical system (the optical system consisting of the first imaging lens 7 and the second imaging lens 8). It has a configuration. 4 (e), focusing point b, the distance L1 from half mirror 9b to sensor 4 and the distance from half mirror 9b to the focusing position by condensing lens 11 The configuration is such that the separation L 2 is the same distance. Next, the light from the light source 10 converges at the above-mentioned equivalent position, passes through the half mirror 9 b, further passes through the second imaging lens 8 and the first imaging lens 7, and is read on the reading surface 3. The light is condensed by the light source and the reading surface 3 is illuminated.

On the other hand, the operation of the condenser lens 11 in the case of the third embodiment will be described. The divergent light from the light source 10 is condensed by the condenser lens 11 and is incident on the second imaging lens 8. Here, due to the space from the inside of the input device body 1 to the substrate 6, the effective diameters of the condensing lens 11 and the second imaging lens 8 are the same as those of the third embodiment and the fourth embodiment. Since the light is almost the same, the state of incidence of light from the condenser lens 11 to the second imaging lens 8 is parallel light or convergent light in order to increase the light collection efficiency. .

Further, the difference between the operation of the condenser lens 11 of the third embodiment and the operation of the condenser lens 11 of the fourth embodiment is described in the reading and illumination optical system shown in FIGS. 4 (d) and 4 (e). The description will be made with reference to the drawings explaining only the components and the optical path. In the case of the third embodiment shown in FIG. 4 (d), the incident state of the light from the light source 10 is collected by the condenser lens 11 and then emitted from the condenser lens 11 Is parallel light or convergent light as described above. As shown in FIG. 4 (d), the diameter of the pupil entering the second imaging lens 8 is D3. In order to focus on the reading surface 3, the second imaging lens is, of course, an imaging lens, so that light incident on the second imaging lens must be in a divergent state. Because, as shown in FIG. 4 (d), the watch angle of the light beam incident on the second imaging lens 8 is determined from the image point on the optical axis of the sensor 4 by the effective pupil of the second imaging lens. Because it must be at an angle S to watch over. However, in the case of the third embodiment described above, after the light exits the condenser lens 11, the light is gradually focused on the pen tip. It will converge. After this convergence, it naturally becomes divergent. Therefore, the illuminance on the reading surface 3 is naturally read if the diameter of the exit pupil of the second imaging lens is the same. It will fall when compared to the case where it is focused on the slope 3.

In the case of the fourth embodiment, as shown in FIG. 4 (e), the light from the light source 10 is condensed by the condenser lens 11 and the light from the second imaging lens 8 is After being focused once by the focusing point b on the side, it diverges and enters the second imaging lens 8. At this time, the diameter of the pupil incident on the second imaging lens 8 is D 4. Here, it is assumed that the angle θ 1 of the luminous flux incident on the second imaging lens' 8 that determines the diameter D 4 of the pupil is observed. On the other hand, in order to form the image on the reading surface 3 on the sensor 14, the light from the light source 10 is reflected by the reading surface 3, passes through the first imaging lens 7 again, and The light passes through the imaging lens 8 of the first lens, then is reflected by the half mirror 9b, and is focused on the sensor 4 to form an image. An angle 2 at which the light is emitted from the second imaging lens 8 is converged once by the action of the condenser lens 11 from the light source 10, and then the light flux which diverges and enters the second imaging lens 8. Can be made the same by selecting the focal length of the condenser lens 11 as appropriate. Therefore, the diameter of the pupil incident on the second imaging lens 8 can be maximized up to the effective diameter of the second imaging lens 8. In addition, the light from the light source 10 on the reading surface 3 is focused, so that the illuminance is the highest.

On the other hand, the case of the third embodiment is summarized again with reference to FIG. 4 (d). When the light from the light source 10 is condensed by the action of the condenser lens 11, the condenser lens 1 After emitting 1, the incident state of light on the second imaging lens is parallel light or convergent light as described above. The diameter D 3 of the pupil entering the second imaging lens 8 can be maximized only up to its effective diameter. Therefore, the pupil of incidence on the second imaging lens 8 is the same as or smaller than D4 in the fourth embodiment. Even if the maximum diameter is the same as D 4, as described above, since the light is focused at the focusing point a on the light source side from the reading surface 3, it naturally diverges after this focusing, and the light on the reading surface 3 is illuminated. I do.

As described above, in the third mode, the light illuminates the reading surface 3 in a divergent state, Since the diameter of the pupil exiting the second imaging lens 8 is also the same as or smaller than that of the fourth embodiment, the illuminance on the reading surface 3 is smaller than that of the fourth embodiment for these reasons. Become smaller. On the other hand, in the case of the fourth embodiment, as described above, by optimizing the focal length of the condenser lens 11, the diameter of the exit pupil of the second imaging lens 8 can be maximized, Since the light can be focused on the reading surface 3, the light from the light source can be captured most efficiently.

Next, the position of the light source 10 in the fourth embodiment is the same as that in the third embodiment because the light focusing position of the condenser lens 11 is closer to the light source than the second imaging lens 8. It is farther from the pen tip than in the case of the above configuration. Therefore, when the light source 10 has a sufficient light amount, the third and fourth embodiments may be selectively used in the configuration of the third embodiment. As a result, the dimension from the pen tip to the light source 10 is shorter than in the fourth embodiment, which leads to downsizing in the longitudinal direction. On the other hand, when the length of the input device body 1 in the longitudinal direction is sufficient, the light source 10 with a small light intensity is used as the configuration of the fourth embodiment by efficiently taking in the light from the light source. It can contribute to cost reduction. As described above, it is possible to appropriately use the configuration of the third embodiment or the configuration of the fourth embodiment depending on whether the size is reduced or the cost is reduced.

However, if the focusing position of the light from the light source 10 is within a range that does not hinder the amount of light received by the sensor 14 in terms of the reading performance of the sensor 14, it is not necessary to focus at the equivalent position with the sensor 4. Absent. In other words, the L1 dimension and the L2 dimension are shifted from each other, and the light condensing property on the reading surface 3 is inferior, but the illumination range on the reading surface 3 is widened. Even if the optical axes of the focusing lens 11, the second imaging lens 8 and the first imaging lens 7 are shifted, the reliability of illumination on the reading surface is improved.

Here, also in the fourth embodiment, similarly to the first embodiment, a detailed structure in the pen tip portion 2 and a structure in which the pen tip portion 2 is detachable and replaceable. The same applies to the fact that the tilt switch 27 is connected to the light source 10 and the effect thereof is the same, so that the description is omitted. In addition, a convex portion 28 is provided in a part of the input device body 1 in the longitudinal direction so as to fit to the crotch of the thumb and forefinger when the thumb, forefinger and middle finger hold it. Also, the structure is the same as that of the first embodiment, and the structure in which the interface cable 29 connected to the computer main body is pulled out from the side face in the longitudinal axis direction of the input device main body 1 and its effect Is the same as that in the first embodiment, and a description thereof will not be repeated.

Next, the reading operation of the pen-type computer-input device according to the fourth embodiment will be described with reference to FIG. 4 (e). In this reading operation, the illumination from the light source 10 on the reading surface 3 is different from that in the third embodiment. As described above, in other words, the light from the LED, which is the light source 10, passes through the condenser lens 11, and is on the light source 10 side of the second imaging lens, and the imaging optical system (the first Focusing is performed once at the focusing point b in FIG. 4 (e), which is an equivalent position to the position of the sensor on the image side of the imaging lens 7 and the second imaging lens 8). After that, the light diverges, passes through the half mirror 9b, then passes through the second imaging lens 8 and the first imaging lens 7, and is focused on the reading surface 3 so that the reading surface Lighting 3 After that, similarly to the pen-type computer input devices of the first, second, and third embodiments, the light illuminating the reading surface 3 is reflected by the reading surface 3 and returned to the first imaging lens 7 again. Then, after passing through the second imaging lens, the light is reflected by the half mirror 9 b and guided to the sensor 14 as an image of the reading surface 3. Here, the process of converting the output signal of the sensor into a moving output signal of the force sol on the computer monitor by operating the input device body 1 with a human finger is described in the first step. This is the same as the embodiment.

(Fifth Embodiment) FIG. 5 (a) is a sectional view of a pen-type computer input device of the invention according to a fifth embodiment. FIG. 5 (b) is a longitudinal sectional view thereof. FIG. 5 (c) is a sectional view taken along line AA of FIG. 5 (a). Fig. 5 (d) is the external view. The fifth embodiment is provided with a cylindrical body 13 serving as an outer shell including the input device main body 1 of the pen-type computer input device of the first, second, third, and fourth embodiments. The input device main body 1 is guided by a cylindrical body 13 so as to be movable forward and backward in the axial direction within the cylindrical body 13 in accordance with a stroke of an input switch 15 described later. . Here, the input device main body 1 in FIGS. 5 (a) @ to 5 (c) is the case of the fourth embodiment. Further, the input device body 1 is pressed by a predetermined pressure toward the pen tip side in the cylindrical body 13 by a compression spring 14 formed in the cylindrical body 13, and an input device (not shown) The main body 1 and the cylindrical body 13 are locked by respective locking portions. The input device body 1 has an input switch 15 mounted on the board 6. When the pen tip is brought into contact with the reading surface 3 and the cylinder 13 is pressed with a finger toward the pen tip with the force of the compression spring 14 or more, the cylinder 13 moves to the pen tip side, An abutting portion 13a of the cylindrical body which comes into contact with the input switch 15 turns the input switch 15 on and off by moving the cylindrical body. This allows the user to perform switch input work while holding the pen.

Other configurations of the optical system for reading in the input device body 1, the sensor 4 and its IC package 5, and the optical system for illumination, etc., naturally have the respective configurations of the first to fourth embodiments. Applicable. Therefore, as for the reading operation, if the configuration in the input device main body 1 is the same as that of each of the first to fourth embodiments, the operation is naturally the same and the description is omitted.

Here, also in the fifth embodiment, similarly to the first embodiment, the detailed structure of the pen tip 2 and the structure in which the pen tip 2 is detachable and replaceable, Since the inclination switch 27 is connected to the light source 10 and the effect is the same, the description is omitted. In addition, a convex portion 28 is provided in a part of the input device body 1 in the longitudinal direction so as to fit into the crotch of the thumb and forefinger when the thumb, forefinger, and middle finger hold it. Also The structure is the same as that of the first embodiment, and the structure in which the interface cable 29 connected to the computer main body is pulled out from the side surface in the longitudinal axis direction of the input device main body 1 and the effect thereof are also described in the second embodiment. The description is omitted because it is the same as that of the first embodiment.

(Sixth Embodiment) FIG. 6 (a) is a block diagram of a control circuit of a pen-type computer input device of the invention according to a sixth embodiment. Fig. 6 (b) is an external view. In the sixth embodiment, since the sensor 14 for obtaining the moving output signal of the force-sol is a two-dimensional image sensor, the data processing is changed. A digital image output signal is output to the interface 64 of the camera to enable image input having the same function as a handy scanner or a bar code reader. Here, the input device itself is of a type in which the first imaging lens 7 is arranged at the pen tip of the first to fifth embodiments and the reading surface 3 such as a mouse pad is directly optically read. I do.

Next, referring to FIG. 6 (a), a description will be given of switching between a case where a moving output signal of a force sol is output and a case where an image output signal is output. In the normal state shown in FIG. 6 (a), the cursor movement output signal is output from the interface 64 with the personal computer. To output the cursor movement output signal, as described in the first embodiment, a continuous image of the surface of the reading surface 3 such as a mouse pad is taken at a fixed period, and the change of each image is recorded. To go. The change amount is converted into a movement amount of each coordinate in the X direction and the Y direction, and is converted into a movement output signal of a force solver on a computer monitor, and an interface with a personal computer is performed. Output to face 64. These series of data processing are performed by the mobile output signal processing unit.

Next, in order to output a digital image output signal to the interface 64 with the personal computer, the output switch SW shown in FIG. When pressed, the output is switched from the force output signal to the image output signal. More specifically, when the output switching switch SW is pressed, the switch SW1 shown in FIG. 6A is closed, whereby the analog image output signal from the sensor 14 is transmitted to the image signal transmission unit. 6 Also sent to 2 side. At the same time, when the SW 2 is simultaneously linked and closed, a circuit from the moving output signal processing unit 61 to the image signal transmitting unit 62 is connected. This function will be explained in the following operation description. Here, the switching switch SW 3 also operates in conjunction with the two switches, and similarly to the two switches, the image signal transmission unit 62 and the interface 6 with the computer 1 Only in the operation mode in which the image signal is sent to 4, the image signal transmission unit and the circuit of the interface 6 4 are connected, and at that time, the circuit of the interface from the movement output signal processing unit 6 1 is disconnected. It has become. Normally, only the movement output signal processing unit 61 sends a cursor movement output signal to the interface 64.

The operation of the above configuration will be described next. When the output selection switch SW is not pressed, that is, when the normal cursor movement output signal is output from the interface 64, select the icon on the monitor and select the resolution for image input. Make settings such as settings. After this setting is completed, when this output switch SW is pressed, the image input start command is transmitted to the computer via the interface 64. At the same time, as described in the above configuration, when the output switch SW is pressed, the output destination of the analog image output signal from the sensor 4 is basically sent to the image signal transmission unit 62 side. Can be Subsequently, when the operator holds the input device body 1 with his / her finger while holding down this output switch SW and performs scanning for image input in the X or Y direction, the analog signal of the sensor 4 is output. Is sent not only to the image signal transmission section 62 but also to the movement output signal processing section 61, and the movement output signal processing section 61 automatically determines whether scanning in the X direction or scanning in the Y direction is performed. to decide. 'Here, the judgment of this scanning direction is transferred. This is performed by the motion signal processing unit 61. In this state, since the SW 2 is in the closed state, the determination can be transmitted to the image signal transmission unit 62. In this way, the X-direction or Y-direction is determined based on the leading data at the start of scanning. By using the output signal processing unit 61, the scanning direction can be specified by the icon on the computer monitor. Eliminates the need.

Next, for example, scanning in the X direction is performed, and when it is determined that the scanning is in the X direction, the sensor 4 is a two-dimensional image sensor. That is, scanning in the X direction is performed using a one-dimensional sensor array in the Y direction. However, the sensor array in the X direction of the sensor is used to count the movement amount in the X direction, and the movement signal processing unit 61 counts the movement amount.

'In this way, when scanning in the X direction, the image signal is captured by the sensor array in the Y direction, the amount of movement is counted by the sensor array in the X direction, and the output signal of both output signals is captured. After the analog image signal sent to the image signal transmission unit 62 and the analog image signal sent from the sensor 4 to the image signal transmission unit is subjected to image processing described later, these signals are processed and the interface with the computer 6 4 is performed. The image is transmitted to the computer via the computer and forms an image on the computer monitor. Here, in the image signal transmission section 62, image processing such as key correction, luminance correction, and AZD conversion is performed in the same manner as signal processing of a so-called video camera or scanner sensor, and a color image is formed. In such a case, color correction is performed, and finally, a digital image signal is output to the interface 64 of the computer. '

To summarize the above operation, in the pen-type computer input device of the present invention, the sensor uses a two-dimensional image sensor, and the moving output signal processing unit to the personal computer and the image signal transmission unit are used. And a switch to switch from the cursor movement output signal to the image output signal. Then, image input and bar code input can be performed.

Next, the pen-type input device capable of inputting an image according to the sixth embodiment has been described. Additional functions will be described. FIG. 6 (b) is a block diagram of the control circuit. In the case of FIG. 6 (a), the movement output signal processing section 61 is used to automatically determine whether the scanning is in the X direction or the Y direction at the start of scanning. However, in this state, if the pen is scanned by hand and meandered while scanning and inputting the scanned image with this input device, it would naturally meander as shown in Fig. 6 (d). Output as an image. In order to solve this problem, in the case of FIG. 6 (b), an image signal XY shift correction unit 63 is provided, the amount of meandering is calculated, and the meandering amount correction signal according to the amount of meandering is input. The image data is transmitted to the image signal transmission section 62, and the image signal transmission section 62 corrects the meandering amount and outputs the image data to the interface 64. For example, when the input device is scanned in the X direction, the scanning deviation due to the meandering in the Y direction is corrected, and when the input device is scanned in the Y direction, the scanning deviation due to the meandering in the X direction is corrected. As a result, it is output as a corrected image with linearity as shown in Fig. 6 (e).

This meandering correction in the image signal transmission unit 62 is a method of synchronizing the capture of the image signal before correction and the meandering correction signal from the image signal XY shift correction unit 63 to sequentially correct in real time. Alternatively, a memory of a predetermined capacity is built in the image signal transmission unit 62, and the image signal before correction and the meandering correction signal from the image signal Xγ shift correction unit 63 are stored in the memory. There is a method of ejecting image data while performing correction calculation to interface 6 4. By this correction process, the meandering can be corrected to a straight line, and a good image can be obtained. Here, the meandering correction is performed in cooperation with the movement output signal processing unit 61, the image signal transmission unit 62, and the image signal XY shift correction unit 63 of the circuit in the pen-type computer input device. Image signal is output, but the image output signal before correction is Output directly from the transmission unit 62 to the interface 64, and also output the correction signal from the image signal XY shift correction unit 63 directly from the interface 64, and perform the correction calculation processing in the computer. A circuit configuration is also conceivable. Industrial applicability

As described above, according to the pen-type computer input device of the present invention, the pen tip is easy to see because of its small size and the operability is improved, so that it is suitable as a computer input device for tracing curves and figures. ing. Also, since it is possible to input images that were not possible with a conventional optical mouse, it is suitable as a computer input device in fields that require a simple scanner function or fields that require a barcode function. .

Claims

The scope of the claims

A pen-type input device body is provided with a sensor for optically reading the relative movement direction and amount of movement between the input device body and the reading surface. A first imaging lens for forming an image on a sensor is arranged, a second imaging lens and a reflection mirror are arranged between the first imaging lens and the sensor, and the sensor is mounted. The surface of the IC package is placed in the longitudinal direction of the pen-type computer input device body, and a light source that illuminates the reading surface is collected by a condenser lens and a first imaging lens. The pen is characterized by being provided with a signal processing unit for illuminating the reading surface and illuminating the reading surface, and processing the data read by the sensor into a moving output signal of a force sol on a monitor of a computer. Type computer-input device

The pen-type computer input device according to claim 1, wherein an optical waveguide such as an optical fiber is arranged between one or more condenser lenses and the first imaging lens. A pen-type computer input device characterized in that the reading surface is illuminated.

2. The pen-type computer input device according to claim 1, wherein the reflecting mirror is a half mirror, and light from the light source passes through one or more condenser lenses and the half mirror. A pen-type computer input device, which illuminates the reading surface through the second imaging lens and the first imaging lens.

4. The pen-type computer input device according to claim 3, wherein the light from the light source is focused by the condenser lens at a position equivalent to the sensor position on the image side of the imaging optical system, or is focused at a substantially equivalent position. Pen-type computer input, which passes through the half mirror and further passes through the second imaging lens and the first imaging lens to illuminate the reading surface. The pen-type computer input device according to claim 1, claim 2, claim 3, or claim 4, wherein the first imaging lens is disposed in the case. A pen-type computer-based input device, characterized in that the pen tip is detachable from the input device body and can be replaced. The pen-type computer-input device according to claim 1, claim 2, claim 3, claim 4, and claim 5, A pen-type combination input device, wherein a tilt switch is provided in the input device, and the light source is turned off when the input device is tilted.

A pen-type computer input device is characterized in that a protrusion is provided at a part of the input device main body in the longitudinal direction so as to be fitted to a crotch between a thumb and a forefinger when the input device main body is held by a finger. Pen-type computer input device.

A pen-type computer input device comprising: a pen-type computer input device, wherein an interface cable connected to the computer main body is drawn out from a longitudinal side surface of the input device main body. In a pen-type computer input device, a cylindrical body is provided that includes the main body of the input device and serves as an outer shell. The main body of the input device is movable in the cylindrical body by a predetermined amount in the front and rear direction. An input switch is provided on the input device main body or the cylindrical body, the pen tip is applied to the surface, and the cylindrical body is pressed when the cylindrical body is pressed toward the pen tip side. A pen type moving to a pen tip side, wherein a contact portion of the cylinder or the input switch of the input device body with the movement of the cylinder turns on or off the input switch. Computer input device.

The pen-type computer-input device according to claim 9, A pin-type computer input characterized in that a protrusion that fits between the thumb and forefinger when the input device body is held with a finger is provided on a part of the outer shell cylinder in the longitudinal direction. apparatus.

10. The pen-type computer input device according to claim 9, wherein an in-plane cable connected to the computer main body is drawn out from a longitudinal side surface of the outer cylindrical body. Type of combi-user input device.

A pen-type computer according to claim 1, claim 2, claim 3, claim 4, claim 4 ', claim 5, and claim 6. In the input device, the sensor uses a two-dimensional image sensor, and includes a moving output signal processing unit for moving the cursor to a personal computer, and an image signal transmitting unit for performing image processing for image input. A switch for switching the output signal from the moving output signal to the image output signal is provided, and the moving output signal processing section can determine whether to be in the X direction or the Y direction based on the leading data at the start of scanning. A pen-type computer input device capable of inputting images.

In the pen-type computer-based input device according to claim 12, when performing image input, when the input device is scanned in the X direction, a scan deviation in the Y direction is corrected, A pen-type computer input device comprising an image signal XY shift correction unit for correcting a scan shift in the X direction when scanning is performed in the Y direction.