WO2005031554A1 - 光学式位置検出装置 - Google Patents
光学式位置検出装置 Download PDFInfo
- Publication number
- WO2005031554A1 WO2005031554A1 PCT/JP2004/013523 JP2004013523W WO2005031554A1 WO 2005031554 A1 WO2005031554 A1 WO 2005031554A1 JP 2004013523 W JP2004013523 W JP 2004013523W WO 2005031554 A1 WO2005031554 A1 WO 2005031554A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- imaging
- optical position
- coordinates
- pointer
- light source
- Prior art date
Links
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
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
- G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet
Definitions
- the present invention relates to an optical position detection device that detects the pointing position coordinates of a pointer, and in particular, does not impair operability even if the number of light sources is reduced, consumes low power, is low in cost, and is a compact optical device.
- the present invention relates to a position detecting device.
- Fig. 1 is a diagram for explaining the outline of a conventional optical digitizer.
- Fig. 1 (a) is a top view of the external appearance
- Fig. 1 (b) is a schematic front view of the light source part, also showing the indicator side force. It is.
- the detection unit 3 includes an image sensor 4, a slit 5 serving as an image forming means, and a light source 6 such as an LED provided near an upper portion thereof. Light emitted from the light source 6 enters a retroreflective member 7 provided around the detection area 2.
- the retroreflective member 7 has a property of reflecting incident light in the direction in which the light enters.
- the light emitted from the light source 6 passes through the detection area 2, enters the retroreflective member 7, and passes through the opposite optical path. And returns to the detection unit 3.
- the indicator 1 is placed on the detection area 2, a part of the optical path is blocked, and the indicator 1 cannot return to the detection unit 3.
- the light source 6 needs to be as close as possible to the slit 5 in order to minimize the deviation of the visual field from the image sensor 4.
- a light source 6 is provided near the upper part of the slit 5 in order to eliminate the left and right displacement of the shadow due to the unevenness of the light source. If the light source is provided upward while applying force, as shown in Fig. 1 (c), the detection area will expand in the vertical direction, and even if the detection area 2 is not securely touched, it will be erroneously recognized. In some cases, it was detected. This is fatal, for example, in the case of inputting handwritten characters, because the characters are continuously converted into characters. Therefore, it is preferable that the light source 6 is arranged at a position close to the detection area 2.
- FIG. 2 is a diagram for explaining the outline of the optical digitizer disclosed in the above publication.
- FIG. 2 (a) is an external side view of the detection unit
- FIG. 2 (b) is a front view of the detection unit. is there.
- the mirror means 8 for bending the light beam emitted from the light source 6 it becomes possible to make the light from the light source 6 closer to the detection area 2. This makes it possible to prevent erroneous recognition when the detection area 2 is not securely touched.
- Patent Document 1 US Pat. No. 4,507,557 (FIGS. 1 and 4)
- Patent Document 2 JP-A-2002-132435 (Fig. 1)
- an object of the present invention is to provide a compact optical position detecting device which does not impair operability even if the number of light sources is reduced, consumes low power, and is low in cost. It is.
- an optical position detecting device is provided on at least three sides around a detection area, and retroreflects incident light in that direction.
- Two light sources each provided near one of the left and right sides in the horizontal direction, each having a radiation range in which at least two sides of the retroreflective member enter, and emitting light toward the retroreflective member, and respective imaging units
- a processing unit for calculating the pointing position coordinates of the pointer based on the principle of triangulation using the coordinates of one side end of the shadow image of the pointer generated by the light source captured by the light source.
- the light source may be provided in the vicinity of one of the left and right sides in the horizontal direction, which is above the imaging region with respect to the imaging unit.
- the light source near the imaging unit on the right side as viewed from the indicator is provided near the left side in the horizontal direction of the imaging unit as viewed from the pointing force, and the light source near the imaging unit on the left side as viewed from the pointing force is closer to the imaging unit as viewed from the pointing device It may be provided near the right side in the horizontal direction.
- the processing unit includes a coordinate at the right end of the shadow image captured by the right imaging unit as viewed from the pointer, and a left side of the shadow image captured by the left imaging unit as viewed from the pointer power.
- the coordinates of the designated position of the pointer may be calculated using the coordinates of the end.
- the processing unit may calculate the pointing position coordinates of the pointer using coordinates that are shifted by a predetermined amount toward the inside of the shadow from the coordinates of one side edge of the shadow image of the pointer.
- the imaging unit includes an imaging element and an imaging unit, and has a mirror unit that refracts an imaging field of view between the imaging unit and the imaging unit or between the imaging unit and the retroreflective member. It is good.
- a display device may be provided, and the display surface of the display device may be a detection area. Then, a cursor may be displayed on the display surface of the display device at a position corresponding to the designated position coordinates of the pointer.
- optical position detecting device of the present invention operability is impaired even if the number of light sources is reduced. Therefore, there is an advantage that a compact optical position detecting device with low power consumption and low cost can be realized. In addition, there is an advantage that the touching problem described below, which eliminates misidentification of the touch, is eliminated.
- FIG. 3A is a schematic top view of a first embodiment of the optical position detecting device of the present invention
- FIG. 3B is a front view of the detecting unit.
- the optical position detection device of the present invention is characterized in that the detection unit 3 uses only one light source 6 as shown in the figure.
- the structure of the optical position detecting device of the present invention will be specifically described.
- the optical position detecting device of the present invention has a retroreflective member 7 provided on at least three sides around the detection area 2.
- the retroreflective member 7 is a member that retroreflects the incident light in the direction thereof, and has a force such as a tiny glass bead spread.
- the detection units 3 are arranged at the opening of the retroreflective member 7, in the example of FIG.
- the detection unit 3 includes an imaging device 4 such as a CCD, imaging means 5 such as a lens, and a light source 6 such as an LED.
- the field of view of the image pickup unit composed of the image pickup device 4 and the imaging means 5, that is, the image pickup field may be any field as long as the two sides of the retroreflective member 7 enter.
- the radiation range of the light source 6 may be any field of view in which two sides of the retroreflective member 7 enter.
- the area of the imaging visual field and the radiation range in the same detection unit are the same two sides of the retroreflective member 7, and are almost the same area.
- the light source 6 of the present invention is positioned near one of the left and right sides in the horizontal direction of the imaging units 4 and 5, more specifically, in the horizontal direction above the imaging region with respect to the detection area 2. It is provided near one of the left and right sides.
- the light source 6 near the image sensor 4 on the right side as viewed from the indicator 1 is provided near the horizontal left side of the image sensor 4 as viewed from the indicator, and the image sensor on the left side as viewed from the indicator 1
- the light source 6 near 4 is provided near the horizontal right side of the imaging device 4 as viewed from the pointer.
- FIG. 4 shows an example of a signal output from each of the left and right detection units in the state shown in FIG. Fig. 4 (a) The output signal of the detection unit 3 on the right side when viewed from the indicator 1, and FIG. 4B shows the output signal of the detection unit 3 on the left side.
- the figure shows an example in which the AZD converter binarizes the image so that the shadow portion becomes 0 and the bright portion becomes 1.
- the original shadow position is indicated by reference numeral 10
- the extra shadow position is indicated by reference numeral 11.
- the processing unit 30 calculates the designated position coordinates based on the principle of triangulation using the coordinates of one end of the shadow image.
- the shadow image (FIG. 4 (a)) captured by the right detection unit 3 when viewed from the indicator 1
- the coordinates of the right end are used and the left detection unit 3 captures the image.
- the coordinates of the pointer 1 are calculated using the coordinates of the left end according to the principle of triangulation.
- the end of the indicator 1 on the detection unit side can be detected.
- accurate pointing position coordinates are necessary.However, in the case of an optical digitizer used for a large electronic blackboard, etc., it is sufficient if the edge can be detected. Is often not the case.
- the optical position detection device of the present invention when the detection surface is touched with a finger or a pen, the so-called hand-hand problem that the palm or the like simultaneously touches the detection surface is unlikely to occur. This is because only the end near the detection unit above the detection surface is detected, and is not affected by the shadow of the palm located below the detection unit.
- an optical system having a better operability than one using two light sources is provided in terms of the viewpoint that the operability is not impaired even if only one light source is used. It is possible to realize a type position detecting device.
- the coordinates used for the shadow are shifted from the coordinates on the inside of the shadow by a predetermined amount using the coordinates on the one end side instead of the coordinates on the one end side.
- the coordinate of the designated position of 1 may be calculated. By doing so, it becomes possible to approach the original designated position.
- the processing unit 30 may be configured by a DSP or the like, or may be realized at a driver level of a host device such as an electronic computer.
- a second embodiment of the optical position detecting device of the present invention will be described.
- the example in which the light source is arranged near the side of the imaging unit has been described, but in the second embodiment, a different point is that a mirror means for refracting the imaging field of view of the imaging unit is provided. is there.
- FIG. 5 is a diagram for explaining an optical position detecting device according to a second embodiment of the present invention.
- FIG. 5 (a) is a schematic top view of the optical position detecting device
- FIG. Fig. 5 (c) shows another configuration example of the detection unit.
- mirror means 9 such as a prism mirror for refracting the imaging field of view of the imaging section composed of a combination of the imaging element 4 and the imaging lens 5 by 90 degrees is formed as shown in FIG. It is provided between the image lens and the retroreflective member 7 or between the image sensor 4 and the imaging lens 5 as shown in FIG. With such a configuration, the height limiting force of the imaging element 4 is also released, and the thickness can be reduced.
- the mirror means for refracting at a right angle of 90 degrees is shown.
- the present invention is not limited to this, and the angle may be changed to an arbitrary angle in accordance with the design of the optical position detecting device, restrictions on the installation location, and the like. It may be refracted. Further, in the illustrated example, an example in which the light is refracted in the vertical direction is shown. However, the light may be refracted in the left and right directions.
- Various changes are possible according to the component layout.
- a display device such as a liquid crystal display, a plasma display, and a flat CRT display can be provided in a detection area of the optical position detection device of the present invention.
- a touch panel display can be configured.
- a display device with a position detection function is applied to a device that displays a cursor on a display screen, such as an OS such as Microsoft Windows (registered trademark)
- a conventional optical position detection device uses a touch. Since the cursor is displayed in the part where the cursor has been moved, the cursor is hidden by the finger, and the cursor is lost.
- the end of the finger on the detection unit side that is, the upper end of the finger is the input position, the cursor is displayed on the finger, so that the finger is The cursor will not be hidden and lost.
- the optical position detecting device of the present invention is not limited to the illustrated example described above, and various changes can be made without departing from the gist of the present invention.
- the detection is performed at the upper part of the detection area, that is, at the upper two places in view of the indicator power.
- the output unit is arranged, the present invention is not limited to this, and the lower part of the detection area may be used.
- the detection units may be arranged at the two lower positions in view of the pointing force.
- the light source is provided near the right side in the horizontal direction of the imaging unit in terms of the pointing force, and the light source in the vicinity of the imaging unit on the left side in terms of the pointing force is the pointing device.
- the light source When viewed from above, it is provided near the left side in the horizontal direction of the imaging unit. That is, the light source may be provided on a side that is located above the imaging unit with respect to the detection area.
- FIG. 1 is a view for explaining a conventional optical position detecting device.
- FIG. 2 is a diagram for explaining another conventional optical position detecting device.
- FIG. 3 is a view for explaining a first embodiment of the optical position detecting device of the present invention.
- FIG. 4 is a diagram for explaining signals output from a detection unit of the optical position detection device of the present invention.
- FIG. 5 is a view for explaining a second embodiment of the optical position detecting device of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-336599 | 2003-09-29 | ||
JP2003336599A JP2005107607A (ja) | 2003-09-29 | 2003-09-29 | 光学式位置検出装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005031554A1 true WO2005031554A1 (ja) | 2005-04-07 |
Family
ID=34386103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/013523 WO2005031554A1 (ja) | 2003-09-29 | 2004-09-16 | 光学式位置検出装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2005107607A (ja) |
WO (1) | WO2005031554A1 (ja) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011085479A1 (en) | 2010-01-14 | 2011-07-21 | Smart Technologies Ulc | Interactive system with successively activated illumination sources |
US8055022B2 (en) | 2000-07-05 | 2011-11-08 | Smart Technologies Ulc | Passive touch system and method of detecting user input |
US8089462B2 (en) | 2004-01-02 | 2012-01-03 | Smart Technologies Ulc | Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input region |
US8094137B2 (en) | 2007-07-23 | 2012-01-10 | Smart Technologies Ulc | System and method of detecting contact on a display |
US8115753B2 (en) | 2007-04-11 | 2012-02-14 | Next Holdings Limited | Touch screen system with hover and click input methods |
US8120596B2 (en) | 2004-05-21 | 2012-02-21 | Smart Technologies Ulc | Tiled touch system |
US8228304B2 (en) | 2002-11-15 | 2012-07-24 | Smart Technologies Ulc | Size/scale orientation determination of a pointer in a camera-based touch system |
US8274496B2 (en) | 2004-04-29 | 2012-09-25 | Smart Technologies Ulc | Dual mode touch systems |
US8289299B2 (en) | 2003-02-14 | 2012-10-16 | Next Holdings Limited | Touch screen signal processing |
US8325134B2 (en) | 2003-09-16 | 2012-12-04 | Smart Technologies Ulc | Gesture recognition method and touch system incorporating the same |
EP2530564A2 (fr) | 2011-06-01 | 2012-12-05 | Thales | Système tactile a émetteurs et recepteurs optiques |
US8339378B2 (en) | 2008-11-05 | 2012-12-25 | Smart Technologies Ulc | Interactive input system with multi-angle reflector |
US8384693B2 (en) | 2007-08-30 | 2013-02-26 | Next Holdings Limited | Low profile touch panel systems |
US8405636B2 (en) | 2008-01-07 | 2013-03-26 | Next Holdings Limited | Optical position sensing system and optical position sensor assembly |
US8432377B2 (en) | 2007-08-30 | 2013-04-30 | Next Holdings Limited | Optical touchscreen with improved illumination |
US8456451B2 (en) | 2003-03-11 | 2013-06-04 | Smart Technologies Ulc | System and method for differentiating between pointers used to contact touch surface |
US8456418B2 (en) | 2003-10-09 | 2013-06-04 | Smart Technologies Ulc | Apparatus for determining the location of a pointer within a region of interest |
US8456447B2 (en) | 2003-02-14 | 2013-06-04 | Next Holdings Limited | Touch screen signal processing |
US8508508B2 (en) | 2003-02-14 | 2013-08-13 | Next Holdings Limited | Touch screen signal processing with single-point calibration |
US8902193B2 (en) | 2008-05-09 | 2014-12-02 | Smart Technologies Ulc | Interactive input system and bezel therefor |
US8957864B2 (en) | 2007-08-13 | 2015-02-17 | Canon Kabushiki Kaisha | Coordinate input apparatus and method |
US9442607B2 (en) | 2006-12-04 | 2016-09-13 | Smart Technologies Inc. | Interactive input system and method |
EP2615531A4 (en) * | 2010-09-07 | 2017-04-19 | Beijing Irtouch Systems Co., Ltd. | Touch positioning method, touch screen, touch system, and display |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5193079B2 (ja) * | 2009-01-26 | 2013-05-08 | レノボ・シンガポール・プライベート・リミテッド | 座標検出装置、その座標検出方法、およびコンピュータが実行可能なプログラム |
TWI410841B (zh) * | 2009-09-24 | 2013-10-01 | Acer Inc | Optical touch system and its method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001142630A (ja) * | 1999-11-11 | 2001-05-25 | Newcom:Kk | 光デジタイザ |
JP2002149329A (ja) * | 2000-11-14 | 2002-05-24 | Newcom:Kk | 光デジタイザ |
-
2003
- 2003-09-29 JP JP2003336599A patent/JP2005107607A/ja not_active Withdrawn
-
2004
- 2004-09-16 WO PCT/JP2004/013523 patent/WO2005031554A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001142630A (ja) * | 1999-11-11 | 2001-05-25 | Newcom:Kk | 光デジタイザ |
JP2002149329A (ja) * | 2000-11-14 | 2002-05-24 | Newcom:Kk | 光デジタイザ |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8203535B2 (en) | 2000-07-05 | 2012-06-19 | Smart Technologies Ulc | Passive touch system and method of detecting user input |
US8055022B2 (en) | 2000-07-05 | 2011-11-08 | Smart Technologies Ulc | Passive touch system and method of detecting user input |
US8378986B2 (en) | 2000-07-05 | 2013-02-19 | Smart Technologies Ulc | Passive touch system and method of detecting user input |
US8228304B2 (en) | 2002-11-15 | 2012-07-24 | Smart Technologies Ulc | Size/scale orientation determination of a pointer in a camera-based touch system |
US8508508B2 (en) | 2003-02-14 | 2013-08-13 | Next Holdings Limited | Touch screen signal processing with single-point calibration |
US8466885B2 (en) | 2003-02-14 | 2013-06-18 | Next Holdings Limited | Touch screen signal processing |
US8456447B2 (en) | 2003-02-14 | 2013-06-04 | Next Holdings Limited | Touch screen signal processing |
US8289299B2 (en) | 2003-02-14 | 2012-10-16 | Next Holdings Limited | Touch screen signal processing |
US8456451B2 (en) | 2003-03-11 | 2013-06-04 | Smart Technologies Ulc | System and method for differentiating between pointers used to contact touch surface |
US8325134B2 (en) | 2003-09-16 | 2012-12-04 | Smart Technologies Ulc | Gesture recognition method and touch system incorporating the same |
US8456418B2 (en) | 2003-10-09 | 2013-06-04 | Smart Technologies Ulc | Apparatus for determining the location of a pointer within a region of interest |
US8089462B2 (en) | 2004-01-02 | 2012-01-03 | Smart Technologies Ulc | Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input region |
US8576172B2 (en) | 2004-01-02 | 2013-11-05 | Smart Technologies Ulc | Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input region |
US8274496B2 (en) | 2004-04-29 | 2012-09-25 | Smart Technologies Ulc | Dual mode touch systems |
US8120596B2 (en) | 2004-05-21 | 2012-02-21 | Smart Technologies Ulc | Tiled touch system |
US9442607B2 (en) | 2006-12-04 | 2016-09-13 | Smart Technologies Inc. | Interactive input system and method |
US8115753B2 (en) | 2007-04-11 | 2012-02-14 | Next Holdings Limited | Touch screen system with hover and click input methods |
US8094137B2 (en) | 2007-07-23 | 2012-01-10 | Smart Technologies Ulc | System and method of detecting contact on a display |
US8957864B2 (en) | 2007-08-13 | 2015-02-17 | Canon Kabushiki Kaisha | Coordinate input apparatus and method |
US8384693B2 (en) | 2007-08-30 | 2013-02-26 | Next Holdings Limited | Low profile touch panel systems |
US8432377B2 (en) | 2007-08-30 | 2013-04-30 | Next Holdings Limited | Optical touchscreen with improved illumination |
US8405636B2 (en) | 2008-01-07 | 2013-03-26 | Next Holdings Limited | Optical position sensing system and optical position sensor assembly |
US8405637B2 (en) | 2008-01-07 | 2013-03-26 | Next Holdings Limited | Optical position sensing system and optical position sensor assembly with convex imaging window |
US8902193B2 (en) | 2008-05-09 | 2014-12-02 | Smart Technologies Ulc | Interactive input system and bezel therefor |
US8339378B2 (en) | 2008-11-05 | 2012-12-25 | Smart Technologies Ulc | Interactive input system with multi-angle reflector |
EP2524285A4 (en) * | 2010-01-14 | 2014-06-04 | Smart Technologies Ulc | INTERACTIVE SYSTEM HAVING SUCCESSIVELY ACTIVATED ILLUMINATION SOURCES |
EP2524285A1 (en) * | 2010-01-14 | 2012-11-21 | SMART Technologies ULC | Interactive system with successively activated illumination sources |
US9329700B2 (en) | 2010-01-14 | 2016-05-03 | Smart Technologies Ulc | Interactive system with successively activated illumination sources |
WO2011085479A1 (en) | 2010-01-14 | 2011-07-21 | Smart Technologies Ulc | Interactive system with successively activated illumination sources |
EP2615531A4 (en) * | 2010-09-07 | 2017-04-19 | Beijing Irtouch Systems Co., Ltd. | Touch positioning method, touch screen, touch system, and display |
EP2530564A2 (fr) | 2011-06-01 | 2012-12-05 | Thales | Système tactile a émetteurs et recepteurs optiques |
Also Published As
Publication number | Publication date |
---|---|
JP2005107607A (ja) | 2005-04-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005031554A1 (ja) | 光学式位置検出装置 | |
US9471170B2 (en) | Light-based touch screen with shift-aligned emitter and receiver lenses | |
US8902196B2 (en) | Methods for determining a touch location on a touch screen | |
US8896575B2 (en) | Pressure-sensitive touch screen | |
US9389730B2 (en) | Light-based touch screen using elongated light guides | |
US8587562B2 (en) | Light-based touch screen using elliptical and parabolic reflectors | |
EP2550584B1 (en) | Lens arrangement for light-based touch screen | |
JP3920067B2 (ja) | 座標入力装置 | |
US9195344B2 (en) | Optical surface using a reflected image for determining three-dimensional position information | |
US8576200B2 (en) | Multiple-input touch panel and method for gesture recognition | |
US20110205189A1 (en) | Stereo Optical Sensors for Resolving Multi-Touch in a Touch Detection System | |
US20110261016A1 (en) | Optical touch screen system and method for recognizing a relative distance of objects | |
US20110169781A1 (en) | Touch screen calibration and update methods | |
JP5406990B2 (ja) | タッチパネルを用いた入力装置およびその入力方法 | |
US8403203B2 (en) | Component bonding using a capillary effect | |
JP4054847B2 (ja) | 光デジタイザ | |
CN102341814A (zh) | 姿势识别方法和采用姿势识别方法的交互式输入系统 | |
JP2003114755A5 (ja) | ||
JP4157577B2 (ja) | 座標入力装置 | |
KR100860158B1 (ko) | 펜 형의 위치 입력 장치 | |
KR20100116267A (ko) | 터치 패널 및 그를 가지는 터치 표시 장치 | |
JP2010282463A (ja) | タッチパネル装置 | |
TWI464651B (zh) | 光學觸控系統及其觸控物區分方法 | |
JP2000267798A (ja) | 座標入力/検出装置 | |
AU2014233573B2 (en) | Lens arrangement for light-based touch screen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase |