WO2016076519A1

WO2016076519A1 - Three-dimensional hovering digitizer

Info

Publication number: WO2016076519A1
Application number: PCT/KR2015/009022
Authority: WO
Inventors: 허성환; 김홍채; 이광구
Original assignee: 주식회사 트레이스
Priority date: 2014-11-12
Filing date: 2015-08-28
Publication date: 2016-05-19
Also published as: KR20160056609A

Abstract

The present invention relates to a digitizer and, more specifically, to a 3D hovering digitizer for controlling an image shape display by sensing 3-axis magnetic field information according to the movement of a magnetic force pen. The three-dimensional hovering digitizer according to one aspect of the present invention comprises: a magnetic force pen, which moves by being spaced from the upper part of a touch screen and generates a magnetic field around the pen; a sensor arranged on the outer side of the touch screen so as to sense 3-axis magnetic field information according to the movement of the magnetic force pen; and a control unit for receiving the 3-axis magnetic field information sensed by the sensor so as to control a shape display of a 3D image displayed on the touch screen.

Description

3-D Hovering Digitizer

The present invention relates to a digitizer, and more particularly, to a three-dimensional hovering digitizer for controlling image display by sensing three-axis magnetic field information according to the movement of the magnetic force pen.

Digitizer is a type of input device used in display devices, and includes an electrode structure in the form of a matrix, and when a user moves a pen or a cursor, the digitizer reads the X and Y coordinates on the matrix and transmits a position signal of the input device. It is a device that performs the corresponding command.

The digitizer is also widely called a touch panel or tablet, and two substrates coated with a transparent electrode layer are bonded to face each other with a Dot Spacer interposed therebetween to detect a position when the upper substrate is touched by a finger or a pen. A resistive film method to which a signal is applied, an ultrasonic reflection method using a piezoelectric element using a transducer for surface wave generation, an electromagnetic resonance method using a coil that resonancely absorbs electromagnetic waves on a pattern layer generating electromagnetic waves, and an electrostatic discharge in a human body It is implemented according to a capacitive method that detects a position by recognizing a portion where the amount of current is changed by using the capacitance.

The capacitive method according to the prior art is recognized only within an air gap of about 10 mm from the surface of the touch screen, and the Electro Magnetic Resonance (EMR) method according to the prior art uses a specific frequency at which a coil embedded in the pen comes from the terminal sensor. The pen pressure, speed, and coordinate information of the pen while detecting and transmitting information are detected, and the recognition is limited only within an air gap of about 10 mm.

SUMMARY OF THE INVENTION An object of the present invention is to provide a three-dimensional hovering digitizer capable of detecting magnetic field information generated by a magnetic force pen moving apart from an upper portion of a display screen of a touch screen and thus moving or rotating an image displayed on the screen. There is a purpose.

The three-dimensional hovering digitizer according to one aspect of the present invention is a magnetic pen that moves away from the top of the touch screen and generates a magnetic field around the sensor, and a sensor disposed on the outer surface of the touch screen to detect three-axis magnetic field information according to the movement of the magnetic pen. And a control unit which receives the 3-axis magnetic field information sensed by the sensor and controls the shape display of the 3D image displayed on the touch screen.

Magnetic pen according to the present invention includes a magnetic material disposed in the housing, the magnetic material is at least one of neodymium alloy, iron alloy, samarium alloy, cobalt alloy, platinum alloy, manganese alloy, bismuth alloy, barium alloy and nickel alloy It features.

Sensors according to the present invention are disposed on the outer surface of the touch screen, characterized in that for detecting the three-axis magnetic field information that is the direction and size of the magnetic field generated by the movement of the magnetic pen.

At this time, the control unit according to the present invention is characterized in that for controlling the image shape display by at least one of the movement and rotation of the image displayed on the touch screen, according to the input three-axis magnetic field information.

In addition, the control unit according to the present invention sorts the three-axis magnetic field information detected by the plurality of sensors in the order of the magnitude of the magnetic field vector, extracts the information of the upper preset number of the three-axis magnetic field information of each of the aligned sensors, extracted The display of the shape of the image is controlled according to the result of calculating the three-axis magnetic field information.

The three-dimensional hovering digitizer according to the present invention includes a magnetic force sensor disposed on the outer surface of the touch screen, and detects a change in magnetic flux density due to the movement of the magnetic force pen including the magnetic material therefrom, and for a predetermined distance (for example, 10 cm). Hovering control is possible.

In addition, by implementing a digitizer that can detect the position information of the magnetic pen using a magnetic force sensor installed on the recognition device, there is no need to provide a separate digitizer panel, there is an effect that the display device can be reduced in weight and slim. .

In addition, while using the three-axis magnetic field information according to the movement of the magnetic pen, it is possible to move and rotate the object appearing on the display by using highly reliable three-axis magnetic field information according to a predetermined criterion, motion recognition It is effective to increase the accuracy of the.

The effects of the present invention are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a three-dimensional hover digitizer according to an embodiment of the present invention.

2 is a top view illustrating a magnetic field information acquisition process of a three-dimensional hover digitizer according to an embodiment of the present invention.

3 is a perspective view showing a magnetic field information acquisition process of the three-dimensional hover digitizer according to an embodiment of the present invention.

4 is an exemplary view illustrating shape display control of a 3D image of a 3D hover digitizer according to an exemplary embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, advantages and features of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and only the following embodiments are provided to those skilled in the art to which the present invention pertains. It is merely provided to easily inform the configuration and effects, the scope of the present invention is defined by the description of the claims.

Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or devices in which the mentioned components, steps, operations and / or devices are described. Or does not exclude addition.

1 is a perspective view showing a three-dimensional hover digitizer 100 according to an embodiment of the present invention, Figure 2 is a top view showing a magnetic field information acquisition process of the three-dimensional hover digitizer 100 according to an embodiment of the present invention, 3 is a perspective view showing a magnetic field information acquisition process of the three-dimensional hover digitizer 100 according to an embodiment of the present invention.

The three-dimensional hovering digitizer 100 according to an embodiment of the present invention is a magnetic force pen 110 and a magnetic force disposed on the outer surface of the touch screen 104 to move away from the top of the touch screen 104 and generate a magnetic field to the periphery. The sensor 106 that senses three-axis magnetic field information according to the movement of the pen 110 and the three-axis magnetic field information sensed by the sensor 106 are input to control the display of the shape of the 3D image displayed on the touch screen 104. The controller 108 is configured to display an image signal, measure a magnetic force distribution according to the movement of the magnetic pen, and check the position of the magnetic pen.

3D hovering digitizer 100 according to an embodiment of the present invention includes a touch screen 104 for displaying an image on the front of the case 102 forming a body.

The touch screen 104 includes a touch panel that senses a touch signal, a circuit board that controls input / output of a signal, and a cover window that protects the touch panel.

A user may write or input a command while touching the touch screen 104 with a finger, a stylus pen, a magnetic pen, or the like. According to the exemplary embodiment of the present invention, the magnetic force pen 110 including the magnetic body disposed inside the housing generates a three-dimensional magnetic force distribution according to its movement.

That is, the magnetic force pen 110 is freely spaced apart from the upper portion of the front surface of the touch screen 104, and the three-dimensional magnetic field distribution generated at this time is detected by the sensor 106.

When the magnetic body is moved between the two magnetic force sensors, the magnetic flux density applied to the sensor closer to the magnetic body increases, and conversely, the magnetic flux density applied to the sensor away from the magnetic body decreases.

According to an embodiment of the present invention, the sensor 100 measures the change in magnetic flux density from the magnetic force pen 110, which includes a magnetic material, and the change in magnetic flux density is a sensor facing each other in the vertical, horizontal, and diagonal directions. (E.g., 106a and 106b).

The control unit 108 according to an embodiment of the present invention compares the changes in the magnetic flux density collected by each of the

sensors

106a, 106b, 106c, and 106d with each other, thereby displacing the magnetic force pen 110 including the magnetic material. And by calculating the position coordinates by analyzing the trajectory, and by transmitting the command signal corresponding to the position information of the magnetic force pen 110 corresponding to the time before and after the movement, the display of the shape of the 3D image displayed on the touch screen 104 Control (move or rotate).

In the comparative calculation analysis of the control unit 108, the precision is closely related to the resolution of each

sensor

106a, 106b, 106c, 106d, the resolution of the sensor 106 is a magnetic material included in the magnetic pen 110 Is related to the magnetic flux density. Therefore, the change of the magnetic flux density according to the movement of the magnetic force pen 106 including the magnetic material is calculated in consideration of the resolution of the sensor and the trajectory correction algorithm.

Magnetic force pen 110 according to an embodiment of the present invention includes a magnetic material disposed in the housing, the magnetic material is neodymium alloy, iron alloy, samarium alloy, cobalt alloy, platinum alloy, manganese alloy, bismuth alloy, barium alloy and nickel alloy At least one of them is preferable. In addition, the magnetic force pen 110 may be molded into a cylindrical, conical, truncated, tubular, spherical, hemispherical, square, and the like.

A plurality of sensors 106 according to an embodiment of the present invention is disposed on the outer surface of the touch screen 104 to detect three-axis magnetic field information which is the direction and size of the magnetic field generated by the movement of the magnetic force pen 110.

The case 102 of the three-dimensional hovering digitizer 100 according to an embodiment of the present invention is provided with a plurality of sensors 106, the sensor 106 is disposed on the upper or lower surface of the cover window, the circuit board, the touch panel. It is also possible. In addition, the sensor 106 may be disposed in a peripheral portion (bezel area) in which an image is not displayed on the touch screen 104, but in order to accurately detect the position of the magnetic force pen 110, the center portion (the bezel of the bezel) is displayed. It is also possible to install in the inner zone.

The sensor 106 according to the embodiment of the present invention uses the Hall effect, the search coil induction effect, the flux gate induction effect, the magnetoresistance effect, according to the magnetic force pen 110 is moved away from the top of the touch screen 104 The magnetic force in the 3-axis direction of the spatial Cartesian coordinate is measured.

That is, the magnetic force pen 110 generates a magnetic field, which is a vector, and knowing the size of the direction component of the magnetic field vector, it is possible to calculate the direction and magnitude of the entire magnetic field. Aroma component and size value are measured.

Theoretically, the direction and size of the magnetic field generated by the magnetic force pen can be obtained with only one magnetic force sensor, so that it is possible to check where the magnetic force pen is located on the touch screen. However, in the embodiment of the present invention, A plurality of

magnetic force sensors

106a, 106b, 106c, and 106d are used. In addition, in the exemplary embodiment of the present invention, for example, the digitizer 110 applied to the rectangular touch screen 104 of a conventional mobile terminal, the magnetic force sensor 106a disposed around four corners of the touch screen 104, for example. Will be described on the assumption that.

According to the exemplary embodiment of the present invention, the first magnetic force sensor 106a, the second magnetic force sensor 106b, the third magnetic force sensor 106c, and the fourth magnetic force sensor 106d on the upper left side of the rectangular touch screen 104. ) Is included.

2 is a top view illustrating a magnetic field information acquisition process of the three-dimensional hovering digitizer 100 according to an embodiment of the present invention, Figure 3 is a magnetic field information acquisition process of the three-dimensional hovering digitizer 100 according to an embodiment of the present invention As a perspective view, each magnetic force sensor senses a magnetic field generated in the magnetic pen 110, the first magnetic force sensor 106a, the second magnetic force sensor 106b, the third magnetic force sensor 106c and the fourth Each vector value detected by the magnetic force sensor 106d

,

And

It is called.

Each vector value has components in the X, Y, and Z axes, and the magnitude value of the vector is obtained by vector computing the magnitudes of these three axes.

When the position and inclination of the magnetic force pen 110 containing the magnetic material change, the magnetic field measured by the sensor 106 fixed at a certain position changes.

The value measured at the sensor 106 is the X, Y, Z direction vector of the magnetic field at that point, which becomes a function of the x, y, z coordinates and the slope of the magnetic pen.

The four

magnetic force sensors

106a, 106b, 106c, and 106d theoretically generate respective errors, and four measurement values do not coincide. Accordingly, in the embodiment of the present invention, some of the values measured by the magnetic force sensor 106 are used to confirm the actual position of the magnetic force pen 110 to eliminate this error.

The control unit 108 according to an embodiment of the present invention sorts three-axis magnetic field information sensed by the plurality of sensors 106 in the order of the magnitude of the magnetic field vector, and the three of each of the aligned

sensors

106a, 106b, 106c, and 106d. Information of the upper preset number (eg, two) of the axial magnetic field information is extracted, and the shape display of the image is controlled according to the result of calculating the extracted three-axis magnetic field information.

That is, the first to fourth magnetic force sensors (106a, 106b, 106c, 106d) according to an embodiment of the present invention detects the three-axis magnetic field information generated by the movement of the magnetic force pen 110 in a fixed position, The controller 118 collects three-axis magnetic field information sensed by the

sensors

106a, 106b, 106c, and 106d, and arranges them in the order of the magnitude of the magnetic field vector. In addition, the controller 108 extracts information of the upper predetermined number (for example, two) of the three-axis magnetic field information of each of the aligned

sensors

106a, 106b, 106c, and 106d, and then applies four

magnetic force sensors

106a and 106b. , 106c and 106d, it is possible to obtain the movement information of the magnetic force pen 110 with high reliability.

In addition, in order to improve the accuracy of the magnetic pen 110 movement information, the three-axis magnetic field information of the magnetic force pen 110 sensed by the first to fourth

magnetic force sensors

106a, 106b, 106c, 106d and the magnetic force pen 110 and Expressed in relation to the distance between the first to fourth

magnetic force sensors

106a, 106b, 106c, 106d, arithmetic measurement of the distance instructed to each magnetic force sensor to obtain the spatial position of the magnetic force pen 110 in the lower error range Thus, it is possible to further secure high reliability of the mobile information.

The controller 108 transmits a predetermined command signal for each result according to the result of calculating the extracted three-axis magnetic field information, thereby moving an image displayed on the touch screen 104 of the 3D hovering digitizer 100, It rotates to control the shape display.

4 is an exemplary view illustrating shape display control of a 3D image of the 3D hover digitizer 100 according to an exemplary embodiment of the present invention.

A three-dimensional image is displayed on the touch screen, and the magnetic pen 110 spaced apart from the upper portion of the touch screen by a predetermined distance (for example, within a range of 10 cm) moves to generate a magnetic field.

The control unit according to an embodiment of the present invention receives the three-axis magnetic field information according to the movement of the magnetic force pen 110 from the sensor, and transmits a movement or rotation command signal to the shape display of the 3D image displayed on the touch screen, It will move or rotate the 3D image.

That is, according to the embodiment of the present invention, since the EMR method or the capacitance method according to the prior art overcomes the limitation of having an air gap of about 10 mm, and implements three-dimensional hovering using three-dimensional magnetic field information, By moving or rotating the object displayed on the touch screen according to the user's intention, there is an effect of increasing user convenience.

So far I looked at the center of the embodiments of the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

Claims

A magnetic pen that moves away from the top of the touch screen and generates a magnetic field in the periphery;

A sensor disposed on an outer surface of the touch screen to detect three-axis magnetic field information according to the movement of the magnetic pen; And

Control unit for controlling the shape display of the 3D image displayed on the touch screen by receiving the three-axis magnetic field information sensed by the sensor

Three-dimensional hover digitizer comprising a.
The method of claim 1,

The magnetic force pen includes a magnetic material disposed in the housing, wherein the magnetic material is at least one of neodymium alloy, iron alloy, samarium alloy, cobalt alloy, platinum alloy, manganese alloy, bismuth alloy, barium alloy, and nickel alloy.

Three-dimensional hover digitizer.
The method of claim 1,

The plurality of sensors are disposed on the outer surface of the touch screen, to detect the three-axis magnetic field information that is the direction and size of the magnetic field generated by the movement of the magnetic force pen

Three-dimensional hover digitizer.
The method of claim 3,

The control unit controls the image shape display by at least one of moving and rotating the image displayed on the touch screen according to the input three-axis magnetic field information.

Three-dimensional hover digitizer.
The method of claim 3,

The controller arranges the three-axis magnetic field information detected by the plurality of sensors in the order of the magnitude of the magnetic field vector, extracts information of the upper preset number from among the three-axis magnetic field information of the aligned sensors, and extracts the extracted three-axis magnetic field. Controlling the display of the shape of the image according to the result of calculating the information

Three-dimensional hover digitizer.