WO2005055039A2 - A modular assembly for a self-indexing computer pointing device - Google Patents
A modular assembly for a self-indexing computer pointing device Download PDFInfo
- Publication number
- WO2005055039A2 WO2005055039A2 PCT/US2004/037679 US2004037679W WO2005055039A2 WO 2005055039 A2 WO2005055039 A2 WO 2005055039A2 US 2004037679 W US2004037679 W US 2004037679W WO 2005055039 A2 WO2005055039 A2 WO 2005055039A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- puck
- assembly
- sub
- pointing device
- base
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000003993 interaction Effects 0.000 claims abstract 2
- 210000003811 finger Anatomy 0.000 description 12
- 230000003287 optical effect Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000000946 synaptic effect Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03548—Sliders, in which the moving part moves in a plane
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
Definitions
- the present invention relates to pointing devices for use with computers and the like.
- Modern computer operating systems and graphics programs require a pointing device for controlling the position of a cursor on the computer display.
- the most successful pointing device is the "mouse".
- a mouse is a hand held object that is moved over a flat surface near the keyboard to control the motion of a cursor on the computer display. The direction and distance over which the mouse is moved determines the direction and distance the cursor moves on the display.
- a conventional mouse provides a rigid object that a user can move with great precision.
- the mouse provides a satisfactory solution to the pointing problem.
- the workspace is not large enough to provide a path over which the mouse can move and accommodate the desired cursor movement on the display, the user simply picks up the mouse and re-centers the mouse in the workspace.
- a pointing device for use in these environments must solve the problem of moving a cursor quickly and accurately.
- the device must operate in an intuitive fashion that a novice user can comprehend without extensive instruction.
- the pointing device must operate in a limited workspace and fit within the form factor of the computer or hand held device.
- the usual constraints of low cost, low power consumption and high reliability must also be met.
- the TrackPointTM is a small button that is typically placed in the center of the laptop keyboard.
- the button may be moved in a manner analogous to a "joy stick" by applying a lateral force to the top of the button with a finger.
- the button can only move a small amount; hence, the displacement of the button cannot be mapped directly into a displacement in the cursor position on the computer display. Instead, the button displacement controls the direction and speed with which the cursor moves.
- the accuracy with which a user can position the cursor using this type of velocity control is significantly less than that achieved with a conventional mouse. This limitation is particularly evident in tasks that require small, precise movements such as drawing in a computer graphics program.
- the TouchPadTM is a blank rectangular pad, 50-100 mm on a side, typically placed in front of the keyboard of most laptops.
- the device senses the position of a finger on the surface of the rectangle relative to the edges of the device. This sensing is accomplished by measuring the capacitance changes introduced by a user's finger on a series of electrodes beneath an insulating, low-friction material.
- the TouchPad Like the TrackPoint , the TouchPad also suffers from lack of precision. It is inherently difficult to measure the capacitive changes introduced by the user, who is at an unknown potential relative to the circuit. Furthermore, the contact area of the user's finger is relatively large. Hence, to provide an accurate measurement of the finger position, the device must determine some parameter such as the center of the contact area between the finger and the pad. Unfortunately, the contact area varies in size and shape with the pressure applied by the user. Therefore such determinations are, at best, of limited precision. In practice, users are unable to repeatably execute precise movements.
- puck-based pointing devices provide greater input precision, cleaning and replacing the puck presents unique problems.
- the puck must slide over the surface in the puck field of motion smoothly with a low-friction "feel" without allowing dirt to enter the mechanism.
- the puck mechanism is more difficult to clean if dirt enters the mechanism.
- the puck components are more easily damaged, and hence, a method for inexpensively replacing the key components is needed.
- the present invention includes a pointing device having a puck sub-assembly and a base sub-assembly.
- the puck sub-assembly includes a moveable puck confined to move within a puck field of motion.
- the puck sub-assembly includes a support member having an opening therein that determines a boundary for the puck field of motion.
- the base sub- assembly includes a base surface over which the puck moves, a position detector that measures the position of the puck in the puck field of motion, and an attachment mechanism.
- the attachment mechanism connects the base sub-assembly to the puck sub-assembly such that the puck sub-assembly is reversibly separable from the base assembly.
- the base surface is accessible when the puck sub-assembly is separated from the base assembly.
- the puck sub-assembly further includes a restoring mechanism that returns the puck to a predetermined area in the puck field of motion.
- the support member also includes a first contact that mates with a corresponding second contact in the base sub-assembly for making an electrical connection between the puck and the base sub- assembly.
- the puck is preferably electrically connected to the first contact through a spring that returns the puck to a predetermined area in the puck field of motion.
- Figure 1 A illustrates a top view of a puck-based pointing device.
- Figure IB is a cross-sectional view of the pointing device shown in Figure 1 A through line IB-IB.
- Figure 2 is a cross-sectional view of a pointing device according to one embodiment of the present invention.
- Figure 3 is a top view of a portion of surface 12 shown in Figure 1 over which the puck moves in one embodiment of the present invention.
- Figure 4 is a schematic drawing of an equivalent circuit for electrodes 151-155.
- Figure 5 illustrates a sensing mechanism using optical sensors to determine the position of the puck in the puck field of motion.
- Figure 6 illustrates a top view of another embodiment of a pointing device according to the present invention.
- Figure 7 is a cross-sectional view of the pointing device shown in Figure 6 through line 7-7.
- Figure 8 is a top view of a laptop computer having a pointing device according to one embodiment of the present invention.
- Figure 9 is a cross-sectional view of the laptop computer shown in Figure 8 through line 9-9.
- Figure 1A is a top view of pointing device 10 and Figure IB is a cross-sectional view of pointing device 10 through line IB-IB shown in Figure 1A.
- Pointing device 10 includes a puck 11 that moves over a surface 12 of a substrate 15 within a puck field of motion 19 in response to a lateral force applied to puck 11. The force is typically applied to puck 11 by a user's finger, fingertip, thumb, thumb tip or multiple fingers.
- Puck 11 includes a pressure sensing mechanism that measures the vertical pressure applied to puck 11.
- pointing device 10 includes a sensing mechanism for determining the position of puck 11 on surface 12.
- the puck is typically used to control a cursor on a display.
- a vertical force to puck 11 that is greater than a predetermined threshold, any change in the position of puck 11 on surface 12 is reported to the host apparatus of which pointing device
- This change in position is used to move the cursor on the display by a magnitude and direction that depends on the magnitude and direction of the motion of puck
- the motion of the puck is characterized by a distance d and a direction defined by an angle ⁇ on the pointing device
- the motion of the cursor is characterized by a distance D and a direction defined by angle ⁇ on the display.
- a hardware driver in the host apparatus usually sets the relationship between D and d.
- This provides a convenient "re-centering" capability, typically achieved on a mouse by lifting and replacing the mouse at the center of the field of motion. It is particularly necessary for laptop computers, hand-held devices and other miniature apparatus in which the field of motion is constrained. While the pointing device described above provides many improvements over the conventional pointing devices currently included in laptop computers, the pointing device requires periodic cleaning. Dirt and other debris can accumulate on the surface of the puck field of motion and interfere with the smooth motion of the puck over this surface. In addition, the springs that position the puck in the puck field of motion can be damaged.
- Pointing device 30 includes a base sub-assembly 40 and a puck sub-assembly 50.
- Puck sub-assembly 50 includes the puck 51, a plate 52 having an opening 54 that defines the puck field of motion, and the springs 55 that return puck 51 to a predetermined location within the puck field of motion when puck 51 is released.
- Base sub-assembly 40 includes a surface 45 on which position sensors 41 are used to measure the location of the puck within the puck field of motion. A protective layer (not shown) that electrically insulates the sensors from the puck preferably covers these sensors. Base sub-assembly 40 may also include a controller that receives signals from sensors 41 and computes the location of puck 51 from those signals. The manner in which the position is determined will be discussed in more detail below. Base sub-assembly 40 also includes a detent 46 for securing puck sub-assembly 50 in the base sub-assembly. Puck sub-assembly 50 preferably snaps into place base sub-assembly 40.
- a pointing device such as pointing device 30 can collect dirt and other debris that can interfere with the smooth motion of the puck or the puck position sensing mechanism.
- a pointing device preferably allows a user thereof to disassemble the pointing device and clean the puck and underlying surfaces.
- base sub-assembly 40 includes a plurality of connectors 47 that mate with corresponding connectors 58 on puck sub-assembly 40 for transferring signals from puck 51 to controller 42.
- the signals from puck 51 are preferably coupled to connectors 58 via one or more of springs 55.
- the springs in question are either made from an electrical conductor or have an electrical conductor embedded within or coated thereon.
- the position of the puck in the puck field of motion can be sensed by any of a number of methods. In general, each method utilizes one or more components that reside in the base sub-assembly.
- One such position sensing mechanism is illustrated in Figure 3.
- Figure 3 is a top view of a portion of surface 12 shown in Figure 1 over which the puck moves in one embodiment of the present invention.
- Surface 150 includes four electrodes shown at 151-154 having terminals that are connected to an external circuit. To simplify the drawing, these terminals have been omitted.
- the puck has a bottom surface that includes an electrode 155 that is shown in phantom in the drawing. Electrodes 151-155 are electrically isolated from one another.
- electrode 155 can be covered with a layer of dielectric that provides the required insulation while still allowing electrode 155 to slide over the other electrodes.
- the electrodes can in fact be patterned on the back of the substrate whose surface is shown at 150. This reduces the capacitance to the puck electrode, but can be practical for substrate thicknesses of a few millimeters or less.
- the overlap between electrode 155 and each of electrodes 151-154 depends on the position of the puck relative to electrodes 151-154. Denote the overlaps between electrode 155 and electrodes 151-154 by A-D, respectively. Refer now to Figure 4, which is a schematic drawing of an equivalent circuit for electrodes 151-155.
- the portion of electrode 155 that overlaps electrode 151 forms a parallel plate capacitor having a capacitance that is proportional to overlap A.
- the portion of electrode 155 that overlaps electrode 152 forms a parallel plate capacitor that has a capacitance that is proportional to overlap B, and so on. Since all of the capacitors share portions of electrode 155, the equivalent circuit consists of four capacitors connected to a common electrode shown at 158. This electrode is just electrode 155. Hence, by measuring the capacitance between electrode 155 and each of electrodes 151-154, the position of electrode 155 relative to electrodes 151-154 can be determined. This determination can be made by a controller 159, which may be part of the pointing device or part of the host apparatus to which the pointing device is connected.
- more than 4 electrodes can be placed on the substrate. Capacitance measurements between each of these electrodes and the puck can be used to determine the puck position as described above.
- optical mouse sensor 83 has an illumination system that illuminates the bottom surface of puck 82 and an imaging sensor that forms an image of a portion of the illuminated surface. The imaging system compares successive images of the bottom surface to determine the magnitude and direction of the puck motion between the images.
- FIG. 6 illustrates another embodiment of a pointing device according to the present invention.
- Figure 6 is a top view of pointing device 200
- Figure 7 is a cross-sectional view of pointing device 200 through line 7-7 in Figure 6.
- Pointing device 200 is constructed from a puck sub-assembly 210 and a base sub-assembly 220.
- Base sub-assembly 220 includes two slots 221 that are sized to allow the corresponding tabs shown at 212 to pass through the slots.
- Puck sub-assembly 210 is attached to base sub- assembly 220 by aligning the tabs with the slots. Once the tabs pass under the top surface of the base-assembly, the puck sub-assembly is rotated until the tabs engage corresponding receptacles 226.
- the electrical connections between puck sub-assembly 210 and base sub-assembly 220 are made via contacts on the tabs that engage corresponding contacts in the slots.
- An exemplary pair of contacts is shown at 215 and 225. These contacts allow connections to the electrodes in puck 223 to be made to the controller 235 in base sub-assembly 220. Controller 235 is also connected to the position sensing electrodes shown at 222.
- the attachment mechanism shown in Figures 6 and 7 does not require any tools. The user can remove the puck sub-assembly merely by twisting the puck sub-assembly until the tabs are aligned with the slots.
- Suitable indentations or protrusions can be provided on the surface of puck sub-assembly 210 to aid the user in manipulating the puck sub-assembly. Hence, a user can easily remove the puck assembly for cleaning and/or replacement. Once the puck sub-assembly is removed, the base sub-assembly and any electrodes on the bottom of the puck itself can be cleaned.
- FIG. 8 is a top view of laptop computer 300
- Figure 9 is a cross-sectional view through line 9-9 in Figure 8.
- Pointing device 310 is preferably located adjacent to the keyboard 320 of laptop 300.
- Base sub-assembly 330 is affixed to the laptop and may be mounted in a well on the surface adjacent to the keyboard to provide a thinner overall laptop form factor.
- base sub-assembly 330 can be molded into the surface of the laptop computer.
- the base sub-assembly is attached to this surface in a manner that prevents the user from removing the base sub-assembly.
- Connections between the pointing device and the laptop are provided under the base sub- assembly in this embodiment.
- Exemplary connectors for providing these connections are shown at 360 and 361. This arrangement allows the base sub-assembly to be sealed to the laptop computer in a manner that prevents liquid or debris from entering the laptop computer through the pointing device.
- the puck sub-assembly attaches to the base sub-assembly in a manner analogous to that described above.
- the attachment mechanism allows the puck sub-assembly to be easily removed by the user for cleaning and/or replacement.
- the puck sub-assembly includes the puck 341, the springs 342, and a top plate 343.
- Top plate 343 has a hole that defines the puck field of motion and the attachment mechanism for connecting the puck sub-assembly to the base sub-assembly.
- a pointing device for use with a laptop computer.
- the present invention may be utilized in a number of different data input environments.
- a pointing device according to the present invention can be a stand-alone pointing device that replaces a conventional mouse.
- the pointing device of the present invention can be used as a pointing device on a PDA or cellular telephone for making selections from menus on these devices.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT04800992T ATE543131T1 (en) | 2003-11-24 | 2004-11-10 | MODULAR ASSEMBLY FOR A SELF-INDICATING COMPUTER DISPLAY DEVICE |
EP04800992A EP1687703B1 (en) | 2003-11-24 | 2004-11-10 | A modular assembly for a self-indexing computer pointing device |
KR1020067010028A KR101083862B1 (en) | 2003-11-24 | 2004-11-10 | A modular assembly for a self-indexing computer pointing device |
JP2006541263A JP4933263B2 (en) | 2003-11-24 | 2004-11-10 | Modular assembly for self-searching computer pointing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/722,698 | 2003-11-24 | ||
US10/722,698 US7570247B2 (en) | 2003-11-24 | 2003-11-24 | Modular assembly for a self-indexing computer pointing device |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2005055039A2 true WO2005055039A2 (en) | 2005-06-16 |
WO2005055039A3 WO2005055039A3 (en) | 2005-09-15 |
WO2005055039A8 WO2005055039A8 (en) | 2005-12-01 |
Family
ID=34592042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/037679 WO2005055039A2 (en) | 2003-11-24 | 2004-11-10 | A modular assembly for a self-indexing computer pointing device |
Country Status (7)
Country | Link |
---|---|
US (1) | US7570247B2 (en) |
EP (1) | EP1687703B1 (en) |
JP (1) | JP4933263B2 (en) |
KR (1) | KR101083862B1 (en) |
CN (1) | CN100380297C (en) |
AT (1) | ATE543131T1 (en) |
WO (1) | WO2005055039A2 (en) |
Cited By (1)
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GB2422891A (en) * | 2004-12-20 | 2006-08-09 | Agilent Technologies Inc | Puck type pointing device with light source |
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US7304637B2 (en) * | 2004-08-30 | 2007-12-04 | Avago Technologies Ecbuip (Singapore) Pte Ltd | Puck-based input device with rotation detection |
US7679600B2 (en) | 2004-09-16 | 2010-03-16 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Pointing device with extended travel |
US20060267933A1 (en) * | 2005-05-25 | 2006-11-30 | Li Chong Tai | Eliminating mechanical spring with magnetic forces |
US8188970B2 (en) * | 2006-08-17 | 2012-05-29 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | System and method for automatic re-calulation and monitoring of thresholds in a puck-based pointing device |
US20080042974A1 (en) * | 2006-08-17 | 2008-02-21 | Sachs Todd S | System and method for determining cursor speed in a puck-based pointing device |
GB2441386A (en) * | 2006-08-31 | 2008-03-05 | Paul Alan Blanchard | A device to capture directional input for a visual display |
US9268401B2 (en) | 2007-07-30 | 2016-02-23 | University Of Utah Research Foundation | Multidirectional controller with shear feedback |
WO2009018330A2 (en) * | 2007-07-30 | 2009-02-05 | University Of Utah Research Foundation | Shear tactile display system for communicating direction and other tactile cues |
US8326462B1 (en) | 2008-03-12 | 2012-12-04 | University Of Utah Research Foundation | Tactile contact and impact displays and associated methods |
US20110032090A1 (en) * | 2008-04-15 | 2011-02-10 | Provancher William R | Active Handrest For Haptic Guidance and Ergonomic Support |
KR101014426B1 (en) * | 2008-12-08 | 2011-02-15 | 주식회사 애트랩 | Puck-type pointing device, pointing system and pointing method |
US8610548B1 (en) | 2009-02-03 | 2013-12-17 | University Of Utah Research Foundation | Compact shear tactile feedback device and related methods |
US8638306B2 (en) * | 2009-11-06 | 2014-01-28 | Bose Corporation | Touch-based user interface corner conductive pad |
US8994665B1 (en) | 2009-11-19 | 2015-03-31 | University Of Utah Research Foundation | Shear tactile display systems for use in vehicular directional applications |
KR20120049630A (en) * | 2010-11-09 | 2012-05-17 | 주식회사 이노칩테크놀로지 | Multi-direction input device |
WO2013052005A2 (en) * | 2011-10-07 | 2013-04-11 | Quek Joo Hai | A self-centering input device |
KR101858549B1 (en) | 2015-06-16 | 2018-05-17 | 임재억 | Pointing device |
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- 2004-11-10 CN CNB200480034790XA patent/CN100380297C/en not_active Expired - Fee Related
- 2004-11-10 KR KR1020067010028A patent/KR101083862B1/en not_active IP Right Cessation
- 2004-11-10 AT AT04800992T patent/ATE543131T1/en active
- 2004-11-10 EP EP04800992A patent/EP1687703B1/en not_active Not-in-force
- 2004-11-10 JP JP2006541263A patent/JP4933263B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
CN1886720A (en) | 2006-12-27 |
JP2007512628A (en) | 2007-05-17 |
EP1687703B1 (en) | 2012-01-25 |
KR20060117955A (en) | 2006-11-17 |
KR101083862B1 (en) | 2011-11-15 |
WO2005055039A8 (en) | 2005-12-01 |
WO2005055039A3 (en) | 2005-09-15 |
US7570247B2 (en) | 2009-08-04 |
ATE543131T1 (en) | 2012-02-15 |
US20050110754A1 (en) | 2005-05-26 |
CN100380297C (en) | 2008-04-09 |
JP4933263B2 (en) | 2012-05-16 |
EP1687703A2 (en) | 2006-08-09 |
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