WO2014054268A1 - Élément de fixation de stylet, système de stylet et système d'affichage d'image comprenant le système de stylet - Google Patents

Élément de fixation de stylet, système de stylet et système d'affichage d'image comprenant le système de stylet Download PDF

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Publication number
WO2014054268A1
WO2014054268A1 PCT/JP2013/005832 JP2013005832W WO2014054268A1 WO 2014054268 A1 WO2014054268 A1 WO 2014054268A1 JP 2013005832 W JP2013005832 W JP 2013005832W WO 2014054268 A1 WO2014054268 A1 WO 2014054268A1
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WIPO (PCT)
Prior art keywords
electronic pen
coordinate detection
image display
light
coordinate
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Application number
PCT/JP2013/005832
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English (en)
Japanese (ja)
Inventor
剛 桑山
井上　真一
秀彦 庄司
裕也 塩崎
貴彦 折口
一哉 古割
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パナソニック株式会社
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Publication of WO2014054268A1 publication Critical patent/WO2014054268A1/fr

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    • 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
    • G06F3/03545—Pens or stylus

Definitions

  • the present disclosure relates to an attachment for an electronic pen attached to an electronic pen for inputting characters and drawings to an image display device, an electronic pen system, and an image display system including the electronic pen system.
  • position coordinates There is an image display device that has a function of allowing handwriting input of characters and drawings on the image display surface using a pen-type pointing device called “electronic pen”.
  • electronic pen a technique for detecting the position of the electronic pen in the image display region is used.
  • position coordinates the coordinates representing the position of the electronic pen in the image display area are referred to as “position coordinates”.
  • a position coordinate detection period is provided in one field, and light emission generated in a plasma display panel (hereinafter referred to as “panel”) in the position coordinate detection period is detected by an optical sensor built in the electronic pen.
  • panel a plasma display panel
  • an image display device that detects the coordinate position of an electronic pen is disclosed.
  • an electronic pen is used in contact with the image display surface in order to detect light emitted on the image display surface with an optical sensor.
  • Patent Document 2 discloses an electronic pen including a pen tip portion that is pressed against an image display surface when the electronic pen is used, and a contact state detection unit that detects a contact state between the pen tip portion and the image display surface. Has been.
  • Patent Document 3 discloses a laser pointer that points to a point on the object by irradiating the object with laser light from a position away from the object.
  • the attachment for an electronic pen in the present disclosure is detachably attached to an electronic pen having a light receiving element.
  • the attachment for an electronic pen includes a trunk portion in which an opening for detachably attaching to the electronic pen is formed, and a condenser lens attached to the trunk portion. And the light which injects in a trunk
  • the electronic pen system includes an electronic pen having a light receiving element that receives light and outputs a light reception signal, and an attachment for the electronic pen.
  • the light incident on the body part passes through the condenser lens and is condensed on the light receiving element of the electronic pen attached to the opening.
  • the light receiving element receives the light collected by the condenser lens.
  • the image display system includes an electronic pen, an image display device, and an electronic pen attachment.
  • the image display device generates a plurality of subfields including a coordinate detection subfield that emits light for detecting the position coordinates of the electronic pen on the image display surface.
  • the attachment for the electronic pen is attached to the electronic pen, and the light emitted from the image display device is condensed on the light receiving element of the electronic pen through the condenser lens. Then, the image display system calculates the position coordinates of the electronic pen on the image display surface based on the light emission of the coordinate detection subfield, and performs drawing based on the calculated position coordinates.
  • FIG. 1 is a circuit block diagram schematically illustrating a configuration example of an image display system according to the first embodiment of the present disclosure.
  • FIG. 2 is an exploded perspective view illustrating an example of the structure of the panel used in the image display system according to the first embodiment of the present disclosure.
  • FIG. 3 is a diagram illustrating an example of the electrode arrangement of the panel used in the image display device according to the first embodiment of the present disclosure.
  • FIG. 4 is a diagram schematically illustrating an example of a drive voltage waveform applied to each electrode of the panel in the image display subfield according to the first embodiment of the present disclosure.
  • FIG. 5 is a diagram schematically illustrating an example of a drive voltage waveform applied to each electrode of the panel in the coordinate detection subfield according to the first embodiment of the present disclosure.
  • FIG. 1 is a circuit block diagram schematically illustrating a configuration example of an image display system according to the first embodiment of the present disclosure.
  • FIG. 2 is an exploded perspective view illustrating an example of the structure of the panel used in the image
  • FIG. 6 is a circuit diagram schematically illustrating a configuration example of the sustain electrode driving unit of the image display device according to the first embodiment of the present disclosure.
  • FIG. 7 is a circuit diagram schematically illustrating a configuration example of the data electrode driving unit of the image display device according to the first embodiment of the present disclosure.
  • FIG. 8 is a circuit diagram schematically illustrating a configuration example of the scan electrode driving unit of the image display apparatus according to the first embodiment of the present disclosure.
  • FIG. 9 is a three-view diagram illustrating an appearance of the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 10 is a two-view diagram and a cross-sectional view illustrating the shape of the periphery of the tip of the main body case of the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 10 is a two-view diagram and a cross-sectional view illustrating the shape of the periphery of the tip of the main body case of the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 11 is a two-view diagram and a cross-sectional view illustrating the shape of the pen tip cap of the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 12 is a two-view diagram and a cross-sectional view illustrating the shape of the pen tip portion of the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 13 is an exploded view around the tip of the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 14 is a two-view diagram and a cross-sectional view illustrating the shape of the attachment for the electronic pen according to the first embodiment of the present disclosure.
  • FIG. 15 is a perspective view illustrating an appearance of an electronic pen equipped with the electronic pen attachment according to the first embodiment of the present disclosure.
  • FIG. 16 is a cross-sectional view illustrating the structure of the tip portion of the electronic pen equipped with the electronic pen attachment according to the first embodiment of the present disclosure.
  • FIG. 17 is a diagram schematically illustrating an example of a position coordinate detection operation when the electronic pen is used in the proximity in the image display system according to the first embodiment of the present disclosure.
  • FIG. 18 is a diagram schematically illustrating an example of a position coordinate detection operation when the electronic pen is used remotely in the image display system according to the first embodiment of the present disclosure.
  • FIG. 19 is a diagram schematically illustrating an example of an operation when the electronic pen is used in the proximity in the image display system according to the first embodiment of the present disclosure.
  • FIG. 17 is a diagram schematically illustrating an example of a position coordinate detection operation when the electronic pen is used in the proximity in the image display system according to the first embodiment of the present disclosure.
  • FIG. 18 is a diagram schematically illustrating an example of a position coordinate detection operation when the electronic pen is used remotely in the image display system according to the
  • FIG. 20 is a diagram schematically illustrating an example of an operation when the electronic pen is used remotely in the image display system according to the first embodiment of the present disclosure.
  • FIG. 21 is a diagram schematically illustrating an example of an operation when an input with the electronic pen is performed in the image display system according to the first embodiment of the present disclosure.
  • FIG. 22 is a plan view, a side view, and a plan sectional view showing the shape of the electronic pen attachment according to the second embodiment of the present disclosure.
  • FIG. 23 is a cross-sectional view showing the structure of the tip of the electronic pen equipped with the electronic pen attachment in the second embodiment of the present disclosure.
  • FIG. 1 is a circuit block diagram schematically illustrating a configuration example of the image display system 100 according to the first embodiment of the present disclosure.
  • the image display system 100 includes an image display device 30, a drawing device 40, an electronic pen 50, and an electronic pen attachment 80.
  • the electronic pen attachment 80 is simply referred to as “attachment 80”.
  • the drawing apparatus 40 includes a receiving unit 42 and a drawing unit 46.
  • the electronic pen 50 includes a contact switch 51, a light receiving element 52, a synchronization detection unit 56, a coordinate calculation unit 57, and a transmission unit 58.
  • the attachment 80 includes a condenser lens 82 and is detachably attached to the electronic pen 50.
  • the electronic pen 50 is used when the user inputs characters, drawings, and the like in the image display area of the image display device 30.
  • the attachment 80 is attached to the electronic pen 50 so that the electronic pen 50 can be used at a position away from the panel 10. Details of the drawing device 40, the electronic pen 50, and the attachment 80 will be described later. In the present embodiment, the combination of the electronic pen 50 and the attachment 80 is referred to as an “electronic pen system”.
  • the image display device 30 includes a display device that displays an image and a drive circuit that drives the display device.
  • a display device that displays an image
  • a drive circuit that drives the display device.
  • an image display apparatus 30 using a plasma display panel (hereinafter abbreviated as “panel”) 10 as a display device will be described as an example, but the display device may be a liquid crystal, an organic EL, or the like.
  • the image display device 30 includes, as drive circuits, an image signal processing unit 31, a data electrode drive unit 32, a scan electrode drive unit 33, a sustain electrode drive unit 34, a control unit (not shown) that controls the operation of each circuit block, And a power supply unit (not shown) for supplying necessary power to each circuit block.
  • the image signal processing unit 31 converts a signal obtained by synthesizing an image signal input from the outside and a drawing signal output from the drawing device 40, or one of the signals into image data, and outputs the image data to the data electrode driving unit 32. To do.
  • the image data is data indicating light emission / non-light emission for each subfield in each discharge cell.
  • the data electrode driver 32 generates a drive voltage waveform applied to the data electrode 22
  • the scan electrode driver 33 generates a drive voltage waveform applied to the scan electrode 12
  • the sustain electrode driver 34 applies to the sustain electrode 13. Generate a drive voltage waveform.
  • FIG. 2 is an exploded perspective view showing an example of the structure of the panel 10 used in the image display system 100 according to the first embodiment of the present disclosure.
  • a plurality of display electrode pairs 14 each including a scanning electrode 12 and a sustain electrode 13 are formed on a glass front substrate 11, a dielectric layer 15 is formed thereon, and a protective layer 16 is further formed thereon.
  • the front substrate 11 serves as an image display surface on which an image is displayed.
  • a plurality of data electrodes 22 are formed on the rear substrate 21, a dielectric layer 23 is formed thereon, and a grid-like partition wall 24 is further formed thereon.
  • a phosphor layer 25R that emits red (R)
  • a phosphor layer 25G that emits green (G)
  • a phosphor layer 25B that emits blue (B).
  • the phosphor layer 25R, the phosphor layer 25G, and the phosphor layer 25B are collectively referred to as a phosphor layer 25.
  • the front substrate 11 and the rear substrate 21 are arranged to face each other so that the display electrode pair 14 and the data electrode 22 intersect each other with the discharge space interposed therebetween, and a discharge gas is sealed in the discharge space.
  • FIG. 3 is a diagram illustrating an example of an electrode arrangement of the panel 10 used in the image display device according to the first embodiment of the present disclosure.
  • the panel 10 includes n scan electrodes SC1 to SCn (scan electrode 12 in FIG. 2) and n sustain electrodes SU1 to SUn (sustain electrode 13 in FIG. 2) extending in the first direction.
  • M data electrodes D1 to Dm (data electrodes 22 in FIG. 2) extending in a second direction intersecting the first direction are arranged.
  • the first direction is referred to as a row direction (or horizontal direction, line direction, or x coordinate direction), and the second direction is referred to as a column direction (or vertical direction or y coordinate direction).
  • a set of three discharge cells emitting red, green, and blue colors adjacent to each other constitutes one pixel. Accordingly, m discharge cells ((m / 3) pixels) are formed on one pair of display electrodes 14, and n discharge cells are formed on one data electrode 22.
  • An area where (m ⁇ n) discharge cells are formed becomes an image display area of the panel 10.
  • FIG. 4 is a diagram schematically illustrating an example of a drive voltage waveform applied to each electrode of the panel 10 in the image display subfield according to the first embodiment of the present disclosure.
  • panel 10 emits light for detecting a plurality of image display subfields (shown in FIG. 4) for displaying an image on panel 10 and “positional coordinates” of electronic pen 50 in one field.
  • “Position coordinates” are the coordinates of the position indicated by the electronic pen 50 in the image display area of the panel 10 (coordinates indicating the position of the electronic pen 50).
  • the drive voltage waveform in the image display subfield is the same as the conventional drive voltage waveform, and each of the plurality of image display subfields has a predetermined luminance weight, and discharges light emission / non-light emission of each image display subfield.
  • An image is displayed on the panel 10 by controlling each cell.
  • Each image display subfield has an initialization period, an address period, and a sustain period.
  • the image display subfield is also simply referred to as a subfield.
  • a “forced initialization operation” that forcibly generates an initialization discharge in the discharge cells and a discharge cell that generates an address discharge in the address period of the immediately preceding subfield are selectively used.
  • a “selective initialization operation” that generates an initialization discharge.
  • a forced initialization operation is performed in subfield SF1 and a selective initialization operation is performed in subfields SF2 to SF8 is shown.
  • the number of image display subfields in one field is, for example, eight (subfields SF1 to SF8), and the luminance weight of each subfield is, for example, (1, 34, 21, 13, 8, 5, 3, 2). is there.
  • the number of subfields, the luminance weight, etc. are not limited to the above numerical values.
  • the voltage 0 (V) is applied to each of the data electrodes D1 to Dm and the sustain electrodes SU1 to SUn.
  • an upward ramp waveform voltage that gradually rises from voltage Vi1 lower than the discharge start voltage to voltage Vi2 exceeding the discharge start voltage is applied.
  • positive voltage Ve is applied to sustain electrodes SU1 to SUn, and gradually decreases from voltage 0 (V), which is less than the discharge start voltage, to negative voltage Vi4, which exceeds the discharge start voltage, for scan electrodes SC1 to SCn. Apply a falling ramp waveform voltage.
  • the initializing discharge is generated in each discharge cell by this forced initializing operation, and the wall voltage on each electrode is adjusted to a voltage suitable for the address operation in the subsequent address period Pw1.
  • the driving voltage waveform generated in the initialization period Pi1 is referred to as a forced initialization waveform.
  • a negative scan pulse having a negative voltage Va is applied to the scan electrode SC1 in the first row, and data of discharge cells to be emitted in the first row of the data electrodes D1 to Dm.
  • An address operation is performed in which a positive address pulse with a positive voltage Vd is applied to the electrode Dk.
  • the same addressing operation is sequentially performed in the order of scan electrodes SC2, SC3, SC4,..., SCn up to the discharge cell in the nth row.
  • the number of sustain pulses obtained by multiplying the brightness weight by a predetermined brightness multiple is alternately applied to the scan electrodes SC1 to SCn and the sustain electrodes SU1 to SUn.
  • a discharge cell that has generated an address discharge in the immediately preceding address period Pw1 generates a number of sustain discharges corresponding to the luminance weight, and emits light at a luminance corresponding to the luminance weight.
  • scan electrodes SC1 to SCn are applied with voltage 0 (V) applied to sustain electrodes SU1 to SUn and data electrodes D1 to Dm.
  • An erasing operation is performed in which an upward ramp waveform voltage that gradually rises from the voltage 0 (V) to the positive voltage Vr is applied.
  • the voltage 0 (V) is applied to the data electrodes D1 to Dm, and the positive voltage Ve is applied to the sustain electrodes SU1 to SUn.
  • a downward ramp waveform voltage falling from voltage 0 (V), which is less than the discharge start voltage, to negative voltage Vi4 is applied to scan electrodes SC1 to SCn.
  • a weak initializing discharge is generated in the discharge cell that has generated the sustain discharge in the sustain period Ps1 of the immediately preceding subfield SF1, and the wall voltage on each electrode is changed to the address operation in the subsequent address period Pw2.
  • the wall voltage is adjusted to a suitable level.
  • the initialization discharge does not occur.
  • the drive voltage waveform generated in the initialization period Pi2 is referred to as a selective initialization waveform.
  • each subfield after subfield SF3 the same drive voltage waveform as in subfield SF2 is applied to each electrode except for the number of sustain pulses.
  • FIG. 5 is a diagram schematically illustrating an example of a drive voltage waveform applied to each electrode of the panel 10 in the coordinate detection subfield according to the first embodiment of the present disclosure.
  • the coordinate detection subfield includes synchronization detection subfield SFo, proximity y coordinate detection subfield SFy1, proximity x coordinate detection subfield SFx1, remote y coordinate detection subfield SFy2, and remote x coordinate.
  • a detection subfield SFx2 is included.
  • the proximity y coordinate detection subfield SFy1 and the remote y coordinate detection subfield SFy2 are collectively referred to as “y coordinate detection subfield SFy”, and the proximity x coordinate detection subfield SFx1 and the remote x coordinate detection are performed.
  • the subfield SFx2 is collectively referred to as “x coordinate detection subfield SFx”.
  • the position indicated by the electronic pen 50 in the image display area (hereinafter also referred to as “position of the electronic pen 50”) is represented by an x coordinate and ay coordinate.
  • the coordinate in the row direction is the x coordinate
  • the coordinate in the column direction is the y coordinate.
  • the x-coordinate detection subfield SFx and the y-coordinate detection subfield SFy are subfields that emit light for detecting the x-coordinate and y-coordinate, and display the x-coordinate detection pattern and the y-coordinate detection pattern on the panel 10. .
  • the user directly contacts the pen tip of the electronic pen 50 with the panel 10 (or at a position relatively close to the panel 10).
  • This is a subfield used for detecting the position coordinates of the electronic pen 50 during “proximity use”.
  • the remote y-coordinate detection subfield SFy2 and the remote x-coordinate detection subfield SFx2 are used to detect the position coordinate of the electronic pen 50 when the user uses the electronic pen 50 at a position away from the panel 10. Subfield to use.
  • wireless communication is performed between the electronic pen 50 and the drawing device 40.
  • the electronic pen 50 calculates the position coordinates of the electronic pen 50 inside the electronic pen 50 and transmits data of the calculated position coordinates from the electronic pen 50 to the drawing device 40 by wireless communication.
  • the electronic pen 50 receives the light emitted in the synchronization detection subfield SFo, thereby synchronizing with the image display device 30 and generating a signal (coordinate reference signal) serving as a reference for calculating position coordinates with high accuracy. It becomes possible.
  • the synchronization detection subfield SFo has an initialization period Pio, an address period Pwo, and a synchronization detection period Po.
  • the selection initialization operation similar to the initialization period Pi2 of the subfield SF2 of the image display subfield is performed, and thus the description thereof is omitted.
  • the voltage 0 (V) is applied to the data electrodes D1 to Dm
  • the voltage Ve is applied to the sustain electrodes SU1 to SUn
  • the voltage Vc is applied to the scan electrodes SC1 to SCn.
  • an address pulse of voltage Vd is applied to data electrodes D1 to Dm, and a scan pulse of voltage Va is applied to scan electrodes SC1 to SCn at time to0 to generate an address discharge in each discharge cell.
  • a scan pulse is applied simultaneously to all the scan electrodes SC1 to SCn to generate address discharges in all the discharge cells at the same time.
  • the data electrodes D1 to Dm Alternatively, the address pulse may be applied to each electrode from scan electrode SC1 to scan electrode SCn, and the address discharge may be sequentially generated in each discharge cell.
  • the time to0 is a time at which a scan pulse for generating the last address discharge in the address period Pwo is applied to the scan electrode 12 (for example, the scan electrode SCn).
  • voltage 0 (V) is applied to the data electrodes D1 to Dm. Further, voltage Vc is applied to scan electrodes SC1 to SCn, and then voltage 0 (V) is applied. In this embodiment, this state is maintained until time to1. During this period, after the address discharge is generated in the discharge cell, the state in which no discharge is generated is maintained.
  • the panel 10 is caused to emit light (synchronization detection light emission) a plurality of times as a reference when calculating the position coordinates in the electronic pen 50.
  • a plurality of times (all times in all image cells in the image display area of the panel 10) at predetermined time intervals (for example, time To1, time To2, time To3) (for example, four times of synchronization detection discharge is generated, and light emission for synchronization detection is generated in the panel 10 a plurality of times (for example, four times).
  • the synchronous detection discharge is a discharge similar to the sustain discharge, and is a stronger discharge than the address discharge, and has higher luminance than the light emission generated in the address period Pwo.
  • the electronic pen 50 detects a plurality of times (for example, four times) of light emission for synchronization detection that occurs at a predetermined time interval (for example, the time To1, the time To2, and the time To3). Create a coordinate reference signal.
  • the coordinate reference signal is a signal that serves as a reference when calculating the position coordinates (x, y) of the electronic pen.
  • the entire surface of the image display surface of the panel 10 illuminates all at the same timing, so the electronic pen 50 can be used regardless of the position coordinates of the electronic pen 50 in the image display area of the panel 10. This light emission can be received at the same timing.
  • the time To0 is set to a time longer than any of the time To1, the time To2, and the time To3. This is to prevent the electronic pen 50 from erroneously recognizing light emission due to the address discharge that occurs in the address period Pwo of the synchronization detection subfield SFo as light emission due to another discharge.
  • the time To0 is about 50 ⁇ sec
  • the time To1 is about 40 ⁇ sec
  • the time To2 is about 20 ⁇ sec
  • the time To3 is about 30 ⁇ sec.
  • each time is not limited to these numerical values, and may be set appropriately according to the specifications of the image display system.
  • the proximity y-coordinate detection subfield SFy1 is generated.
  • discharge cell row an aggregate of discharge cells constituting one row
  • pixel row an aggregate of pixels constituting one row
  • the discharge cell row and the pixel row are substantially the same.
  • a group of discharge cells constituting one column is referred to as a “discharge cell column”
  • a group of discharge cells (pixel column) composed of three adjacent discharge cell columns is referred to as a “pixel column”.
  • the proximity y-coordinate detection subfield SFy1 has an initialization period Piy, a y-coordinate detection period Py1, and an erasing period Pey.
  • the same selective initialization operation as in the initialization period Pi2 of the subfield SF2 of the image display subfield is performed to generate an initialization discharge in each discharge cell.
  • the wall voltage of each discharge cell is adjusted to a wall voltage suitable for the proximity y coordinate detection pattern display operation in the subsequent y coordinate detection period Py1.
  • the “first number” is “1” is shown, but the “first number” may be “2” or more.
  • the voltage 0 (V) is applied to the data electrodes D1 to Dm
  • the voltage Ve is applied to the sustain electrodes SU1 to SUn
  • the voltage Vc is applied to the scan electrodes SC1 to SCn.
  • This first pixel row is, for example, a pixel row arranged at the upper end of the image display area.
  • this discharge occurs simultaneously in the discharge cells at the intersections of the data electrodes D1 to Dm and the scan electrode SC1. In this way, discharge occurs in the first pixel row, and the first pixel row emits light.
  • this discharge is also referred to as “y-coordinate detection discharge”.
  • the light emission by this y coordinate detection discharge becomes light emission for y coordinate detection when the electronic pen 50 is used in proximity.
  • the same operation is performed until the nth discharge cell row is reached in the order of scan electrode SC2, scan electrode SC3,..., Scan electrode SCn with the y coordinate detection voltage Vdy applied to data electrodes D1 to Dm. Do it sequentially.
  • the y coordinate detection discharge is sequentially generated in each pixel row from the uppermost pixel row (first pixel row) to the lowermost pixel row (nth pixel row) of the panel 10 one pixel row at a time. .
  • Light emission lines sequentially move in the y-axis direction (for example, one pixel row at a time) from the upper end (first pixel row) to the lower end (nth pixel row) of the image display area of the panel 10. A light emission pattern is displayed on the panel 10.
  • this light emission pattern is referred to as “proximity y coordinate detection pattern”.
  • first light emitting line one light emitting line having a width corresponding to the “first number” is referred to as “first light emitting line”. For example, if the “first number” is “2”, the “first emission line” having a width of two pixel rows sequentially moves in the y coordinate direction by two pixel rows. It becomes a light emission pattern.
  • the timing at which the electronic pen 50 receives the light emitted from the first light emission line changes according to the position coordinates of the electronic pen 50. . Therefore, the y coordinate of the position coordinates (x, y) when the electronic pen 50 is used in proximity can be detected by detecting the timing at which the electronic pen 50 receives the light emitted from the first light emitting line.
  • the time during which the voltage Vay of the y coordinate detection pulse is applied to each of the scan electrodes SC1 to SCn in the y coordinate detection period Py1 (that is, the pulse width of the y coordinate detection pulse) ) Is Ty11.
  • This Ty11 is, for example, about 1 ⁇ sec.
  • the subsequent proximity x-coordinate detection subfield SFx1 has an initialization period Pix, an x-coordinate detection period Px1, and an erasing period Pex.
  • the initialization period Pix a selective initialization operation similar to that in the initialization period Piy of the proximity y coordinate detection subfield SFy1 is performed to generate an initialization discharge in each discharge cell.
  • the wall voltage of each discharge cell is adjusted to a wall voltage suitable for the proximity x-coordinate detection pattern display operation in the subsequent x-coordinate detection period Px1.
  • the x-coordinate detection voltage Vax is applied to the scan electrodes SC1 to SCn, and x is simultaneously applied to the preset “third number” of data electrodes 22.
  • the operation of applying the coordinate detection pulse is sequentially performed on the data electrodes D1 to Dm. In this embodiment, an example in which “third number” is “3” is shown, but “third number” may be a number other than “3”.
  • the voltage 0 (V) is applied to the data electrodes D1 to Dm
  • the voltage Ve is applied to the sustain electrodes SU1 to SUn
  • the negative x coordinate is applied to the scan electrodes SC1 to SCn.
  • a detection voltage Vax is applied.
  • the first pixel column is, for example, a pixel column arranged at the left end of the image display area.
  • discharge occurs simultaneously in the discharge cells at the intersections of the data electrodes D1 to D3 and the scan electrodes SC1 to SCn.
  • discharge occurs in the first pixel column, and the first pixel column emits light.
  • this discharge is also referred to as “x coordinate detection discharge”.
  • the light emission by the x coordinate detection discharge is light emission for x coordinate detection when the electronic pen 50 is used in proximity.
  • Similar operations are performed adjacent to each other in the order of data electrodes D4 to D6, data electrodes D7 to D9,..., Data electrodes Dm-2 to Dm, with the x coordinate detection voltage Vax applied to scan electrodes SC1 to SCn.
  • the three data electrodes 22 are sequentially performed until reaching the m-th discharge cell column.
  • an x coordinate detection discharge is applied to each pixel column from the leftmost pixel column (first pixel column) to the rightmost pixel column ((m / 3) th pixel column) of the panel 10. It occurs sequentially.
  • the x-axis direction for example, one pixel column
  • the moving light emission pattern is displayed on the panel 10.
  • this light emission pattern is referred to as “proximity x coordinate detection pattern”.
  • one light emitting line having a width corresponding to the “third number” is referred to as a “second light emitting line”. For example, if the “third number” is “6”, the “second emission line” having a width of two pixel columns sequentially moves in the x coordinate direction by two pixel columns in the “proximity x coordinate detection pattern”. It becomes a light emission pattern.
  • the timing at which the electronic pen 50 receives the light emitted from the second light emission line changes according to the position coordinates of the electronic pen 50. . Therefore, the x coordinate of the position coordinate (x, y) when the electronic pen 50 is used in proximity can be detected by detecting the timing at which the electronic pen 50 receives the light emitted from the second light emitting line.
  • the time during which the voltage Vdx of the x-coordinate detection pulse is applied to each of the data electrodes D1 to Dm in the x-coordinate detection period Px1 (that is, the pulse width of the x-coordinate detection pulse) ) Is Tx11.
  • This Tx11 is, for example, about 1 ⁇ sec.
  • the remote y-coordinate detection subfield SFy2 is generated.
  • the remote y-coordinate detection subfield SFy2 has an initialization period Piy, a y-coordinate detection period Py2, and an erasing period Pey.
  • the selective initializing operation similar to the initializing period Piy of the proximity y coordinate detection subfield SFy1 is performed to generate an initializing discharge in each discharge cell.
  • the wall voltage of each discharge cell is adjusted to the wall voltage suitable for the remote y coordinate detection pattern display operation in the subsequent y coordinate detection period Py2.
  • the y-coordinate detection voltage Vdy is applied to the data electrodes D1 to Dm, and y is simultaneously applied to the preset “second number” of scan electrodes 12.
  • the operation of applying the coordinate detection pulse is sequentially performed on scan electrodes SC1 to SCn.
  • the “second number” is a numerical value larger than the “first number” used in the y coordinate detection period Py1 of the proximity y coordinate detection subfield SFy1. In the present embodiment, an example in which the “second number” is “8” is shown, but the “second number” may be a number other than “8”.
  • the voltage 0 (V) is applied to the data electrodes D1 to Dm
  • the voltage Ve is applied to the sustain electrodes SU1 to SUn
  • the voltage Vc is applied to the scan electrodes SC1 to SCn.
  • this discharge occurs simultaneously in the discharge cells at the intersections of the data electrodes D1 to Dm and the scan electrodes SC1 to SC8. In this way, discharge is generated simultaneously in the 1st to 8th pixel rows, and 8 pixel rows in the 1st to 8th rows emit light all at once.
  • this discharge is also referred to as “y-coordinate detection discharge”.
  • the light emission by this y coordinate detection discharge is light emission for y coordinate detection when the electronic pen 50 is used remotely.
  • Similar operations are performed adjacent to each other in the order of scan electrodes SC9 to SC16, scan electrodes SC17 to SC24,..., Scan electrodes SCn-7 to SCn with the y coordinate detection voltage Vdy applied to the data electrodes D1 to Dm.
  • the steps are sequentially performed until the nth discharge cell row is reached.
  • the y coordinate detection discharge is sequentially generated in each of the pixel rows from the uppermost pixel row (first pixel row) to the lowermost pixel row (nth pixel row) of the panel 10 by 8 pixel rows. .
  • Emission lines sequentially move in the y-axis direction (for example, every 8 pixel rows) from the upper end (first pixel row) to the lower end (nth pixel row) of the image display area of the panel 10. A light emission pattern is displayed on the panel 10.
  • this light emission pattern is referred to as a “remote y coordinate detection pattern”.
  • one light emitting line having a width corresponding to the “second number” is referred to as a “third light emitting line”.
  • the “remote y-coordinate detection pattern” is such that the “third emission line” having a width of 16 pixel rows sequentially moves in the y-coordinate direction by 16 pixel rows. It becomes a light emission pattern.
  • the third light emitting line is a light emitting line having a wider width and a larger light emission amount than the first light emitting line for proximity described above. Therefore, the distance to the panel 10 where the electronic pen 50 can receive the light emitted from the third light emitting line is larger than the distance that the light emitted from the first light emitting line can be received.
  • the timing at which the electronic pen 50 receives the light emitted from the third light emission line changes according to the position coordinates of the electronic pen 50. . Therefore, the y coordinate of the position coordinates (x, y) when the electronic pen 50 is used remotely can be detected by detecting the timing at which the electronic pen 50 receives the light emitted from the third light emitting line.
  • the time during which the voltage Vay of the y-coordinate detection pulse is applied to each of the scan electrodes SC1 to SCn in the y-coordinate detection period Py2 (that is, the pulse width of the y-coordinate detection pulse) ) Is Ty12.
  • This Ty12 is, for example, about 1 ⁇ sec.
  • the subsequent remote x-coordinate detection subfield SFx2 has an initialization period Pix, an x-coordinate detection period Px2, and an erasing period Pex.
  • the initialization period Pix a selective initialization operation similar to that in the initialization period Pix of the proximity x coordinate detection subfield SFx1 is performed to generate an initialization discharge in each discharge cell.
  • the wall voltage of each discharge cell is adjusted to a wall voltage suitable for the remote x-coordinate detection pattern display operation in the subsequent x-coordinate detection period Px2.
  • the x-coordinate detection voltage Vax is applied to the scan electrodes SC1 to SCn, and x is simultaneously applied to the “fourth” data electrode 22 set in advance.
  • the operation of applying the coordinate detection pulse is sequentially performed on the data electrodes D1 to Dm.
  • the “fourth number” is a numerical value larger than the “third number” used in the x coordinate detection period Px1 of the proximity x coordinate detection subfield SFx1. In this embodiment, an example in which the “fourth number” is “24” is shown, but the “fourth number” may be a number other than “24”.
  • the voltage 0 (V) is applied to the data electrodes D1 to Dm
  • the voltage Ve is applied to the sustain electrodes SU1 to SUn
  • the negative x coordinate is applied to the scan electrodes SC1 to SCn.
  • a detection voltage Vax is applied.
  • the positive polarity of the voltage Vdx is applied to the data electrodes D1 to D24 constituting the first to eighth pixel columns while the negative x coordinate detection voltage Vax is applied to the scan electrodes SC1 to SCn.
  • X-coordinate detection pulses are simultaneously applied.
  • discharges are generated simultaneously in the discharge cells at the intersections of the data electrodes D1 to D24 and the scan electrodes SC1 to SCn.
  • discharge is generated simultaneously in the first to eighth pixel columns, and the first to eighth pixel columns emit light all at once.
  • this discharge is also referred to as “x coordinate detection discharge”.
  • the light emission by the x coordinate detection discharge is light emission for x coordinate detection when the electronic pen 50 is used remotely.
  • Similar operations are performed adjacent to each other in the order of data electrodes D25 to D48, data electrodes D49 to D72,..., Data electrodes Dm-23 to Dm, with the x coordinate detection voltage Vax applied to scan electrodes SC1 to SCn.
  • the process is sequentially performed until the mth discharge cell row is reached.
  • 8 pixel columns of x coordinate detection discharge are generated in each pixel column from the leftmost pixel column (first pixel column) to the rightmost pixel column ((m / 3) th pixel column) of the panel 10. It occurs sequentially.
  • one line extending in the y-axis direction (column direction) that emits light with a width corresponding to the “fourth number” (for example, 8 pixel columns) Emission lines sequentially from the left end (first pixel column) to the right end ((m / 3) pixel column) of the image display area of the panel 10 in the x-axis direction (for example, eight pixel columns).
  • the moving light emission pattern is displayed on the panel 10.
  • this light emission pattern is referred to as “remote x coordinate detection pattern”.
  • one light emitting line having a width corresponding to the “fourth number” generated in the y coordinate direction and generated in the x coordinate detection period Px2 is referred to as a “fourth light emitting line”.
  • the “fourth number” is “48”
  • the “remote x-coordinate detection pattern” sequentially moves the “fourth light emission line” having a width of 16 pixel columns in the x-coordinate direction by 16 pixel columns. It becomes a light emission pattern.
  • the fourth light emitting line is a light emitting line having a wider width and a larger amount of light emission than the second light emitting line for proximity described above. Therefore, the distance to the panel 10 where the electronic pen 50 can receive the light emitted from the fourth light emitting line is larger than the distance that the light emitted from the second light emitting line can be received.
  • the remote x-coordinate detection pattern is displayed on the panel 10, so that the timing at which the electronic pen 50 receives the light emitted from the fourth light emission line changes according to the position coordinates of the electronic pen 50. . Therefore, the x coordinate of the position coordinate (x, y) when the electronic pen 50 is used remotely can be detected by detecting the timing at which the electronic pen 50 receives the light emitted from the fourth light emitting line.
  • the time during which the voltage Vdx of the x-coordinate detection pulse is applied to each of the data electrodes D1 to Dm in the x-coordinate detection period Px2 (that is, the pulse width of the x-coordinate detection pulse) ) Is Tx12.
  • This Tx12 is, for example, about 1 ⁇ sec.
  • the light emission luminance is relatively low, but the position coordinate calculation accuracy is relatively high.
  • the coordinate detection pattern and the x coordinate detection pattern are displayed on the panel 10.
  • the remote y-coordinate detection subfield SFy2 and the remote x-coordinate detection subfield SFx2 the y-coordinate detection pattern and the x-coordinate detection pattern with relatively low emission coordinates and relatively high emission luminance are displayed. 10 is displayed.
  • the position coordinates can be calculated with relatively high accuracy.
  • the electronic pen 50 is used remotely, the light emitted from the remote y-coordinate detection subfield SFy2 and the remote x-coordinate detection subfield SFx2 having a relatively high light emission luminance is detected, thereby separating from the panel 10. Even in the electronic pen 50 located at a different position (for example, about several meters), the position coordinates can be calculated.
  • voltage Vc ⁇ 50 (V)
  • voltage Vr 205 (V)
  • voltage Ve 155 (V )
  • the gradient of the rising ramp waveform voltage generated in the initialization period Pi1 is about 1.5 (V / ⁇ sec), and the gradient of the descending ramp waveform voltage generated in the initialization periods Pi1 to Pi8, Pio, Piy, Pix is It is about ⁇ 2.5 (V / ⁇ sec). Further, the gradient of the rising ramp waveform voltage generated in the sustain periods Ps1 to Ps8, the synchronization detection period Po, the erasure period Pey, and Pex is about 10 (V / ⁇ sec).
  • each voltage value and the gradient described above is merely examples, and it is desirable that each voltage value and the gradient is optimally set based on the discharge characteristics of the panel 10 and the specifications of the image display device. .
  • Each circuit block operates based on a control signal supplied from a control unit (not shown), but details of the path of the control signal are omitted in each drawing.
  • FIG. 6 is a circuit diagram schematically illustrating a configuration example of the sustain electrode driving unit 34 of the image display device 30 according to the first embodiment of the present disclosure.
  • Sustain electrode drive unit 34 includes sustain pulse generation circuit 280 and constant voltage generation circuit 285.
  • Sustain pulse generation circuit 280 includes a power recovery circuit 281 and switching elements Q83 and Q84.
  • the power recovery circuit 281 includes a power recovery capacitor C20, switching elements Q21 and Q22, backflow prevention diodes Di21 and Di22, and resonance inductors L21 and L22.
  • Sustain pulse generation circuit 280 generates a sustain pulse of voltage Vs at the timing shown in FIGS. 4 and 5 and applies it to sustain electrodes SU1 to SUn.
  • the synchronization detection pulses V2 and V4 are applied to the sustain electrodes SU1 to SUn.
  • the constant voltage generation circuit 285 has switching elements Q86 and Q87, and applies the voltage Ve to the sustain electrodes SU1 to SUn at the timings shown in FIGS.
  • FIG. 7 is a circuit diagram schematically illustrating a configuration example of the data electrode driving unit 32 of the image display device 30 according to the first embodiment of the present disclosure.
  • the data electrode driving unit 32 operates based on the control signal and the image data supplied from the image signal processing unit 31, but details of the paths of these signals are omitted in FIG.
  • FIG. 8 is a circuit diagram schematically illustrating a configuration example of the scan electrode driving unit 33 of the image display device 30 according to the eleventh embodiment of the present disclosure.
  • the scan electrode driving unit 33 includes a sustain pulse generation circuit 55, a ramp waveform voltage generation circuit 160, and a scan pulse generation circuit 170.
  • the voltage input to the scan pulse generation circuit 170 is referred to as “reference potential A”.
  • Sustain pulse generation circuit 55 has power recovery circuit 151 and switching elements Q55, Q56, and Q59.
  • the power recovery circuit 151 includes a power recovery capacitor C10, switching elements Q11 and Q12, backflow prevention diodes Di11 and Di12, and resonance inductors L11 and L12.
  • the switching element Q59 is a separation switch, and prevents reverse current flow.
  • sustain pulse generating circuit 55 generates a sustain pulse of voltage Vs at the timing shown in FIGS. 4 and 5 and applies it to scan electrodes SC1 to SCn via scan pulse generating circuit 170. Further, in the synchronization detection period Po of the synchronization detection subfield SFo, synchronization detection pulses V1 and V3 are generated and applied to the scan electrodes SC1 to SCn via the scan pulse generation circuit 170.
  • the ramp waveform voltage generation circuit 160 includes Miller integration circuits 161, 162, and 163, generates the ramp waveform voltages shown in FIGS. 4 and 5, and applies them to the scan electrodes SC1 to SCn via the scan pulse generation circuit 170. .
  • each voltage may be set so that a voltage obtained by superimposing the voltage Vp on the voltage Vt is equal to the voltage Vi2.
  • Miller integrating circuit 162 includes transistor Q62, capacitor C62, resistor R62, and backflow prevention diode Di62, and generates an upward ramp waveform voltage that gradually rises toward voltage Vr.
  • Miller integrating circuit 163 includes transistor Q63, capacitor C63, and resistor R63, and generates a downward ramp waveform voltage that gradually falls toward voltage Vi4.
  • Switching element Q69 is a separation switch and prevents reverse current flow.
  • Scan pulse generation circuit 170 has switching elements QH1 to QHn, QL1 to QLn, Q72, a power source that generates negative voltage Va, and a power source E71 that generates voltage Vp.
  • Switching elements QL1 to QLn apply reference potential A to scan electrodes SC1 to SCn, and switching elements QH1 to QHn apply a voltage obtained by superimposing reference voltage A on voltage Vp to scan electrodes SC1 to SCn.
  • the scan pulse generation circuit 170 generates a scan pulse at the timing shown in FIG. 4 and sequentially applies it to each of the scan electrodes SC1 to SCn in each writing period of the image display subfield.
  • a plurality of pairs of switching elements QHi and switching elements QLi are integrated in one IC (scan driver IC).
  • the electronic pen 50 shown in the present embodiment is “proximity use” in which the pen tip portion of the electronic pen 50 is used in contact with (or in proximity to) the panel 10 without attaching the attachment 80 to the electronic pen 50.
  • the electronic pen 50 can be used in two ways of use: “remote use” in which the attachment 80 is attached to the electronic pen 50 and the electronic pen 50 is used at a position away from the panel 10.
  • the electronic pen 50 includes a contact switch 51, a light receiving element 52, a synchronization detection unit 56, a coordinate calculation unit 57, and a transmission unit 58.
  • the light receiving element 52 is provided at the end of the electronic pen 50, receives incident light, converts it into an electrical signal (light reception signal), and outputs it to the synchronization detection unit 56 and the coordinate calculation unit 57.
  • the contact switch 51 detects whether or not the pen tip provided at the tip of the electronic pen 50 is in contact with the image display surface of the panel 10, and is turned on if the pen tip is in contact with the panel 10, for example. “1” is output, and if it is not touched, it is turned off and, for example, “0” is output.
  • the synchronization detection unit 56 detects a plurality of light emissions generated at predetermined intervals from the received light signal, creates a coordinate reference signal, and outputs the coordinate reference signal to the coordinate calculation unit 57. Specifically, the synchronization detection unit 56 uses a timer (not shown) included in the synchronization detection unit 56 to measure the occurrence intervals of a plurality of (for example, four times) light emission. Then, whether or not the occurrence interval matches a predetermined time interval (for example, time To1, time To2, time To3) is determined based on a plurality of threshold values (for example, time This is determined by comparing the measured time intervals with threshold values corresponding to To1, time To2, and time To3.
  • a predetermined time interval for example, time To1, time To2, time To3
  • the synchronization detection unit 56 compares the light reception threshold value th with a light reception signal set in advance (not shown), and calculates a differential value for the light reception signal equal to or greater than the light reception threshold value th.
  • produces is detected, and each time and each time are detected.
  • the time difference between the time when the voltage for generating the discharge is applied to the discharge cell and the time when the discharge actually occurs and the peak of light emission is detected by the electronic pen 50 is measured in advance. You may use for correction of.
  • the light reception threshold th may be set to the lowest level of the light reception signal that allows the light receiving element 52 to stably detect light emission, for example.
  • the synchronization detection unit 56 generates a coordinate reference signal based on one of the continuous light emission (for example, four times) (for example, light emission generated at time to1).
  • the coordinate reference signal is a signal generated in synchronization with the coordinate detection subfield, and is a signal used as a reference when detecting position coordinates.
  • the coordinate calculation unit 57 includes a counter that measures the length of time and an arithmetic circuit that performs an operation on the output of the counter (not shown).
  • the coordinate calculation unit 57 selectively extracts a signal based on the light emission of the y coordinate detection pattern and a light emission based on the light emission of the x coordinate detection pattern from the light reception signal based on the coordinate reference signal and the light reception signal, and outputs an electron in the image display area.
  • the position coordinates (x, y) of the pen 50 are calculated, and the calculated position coordinates are output to the transmission unit 58.
  • the transmission unit 58 outputs a transmission signal based on the light reception signal output from the light receiving element 52 to the outside of the electronic pen 50.
  • the transmission unit 58 includes a transmission circuit (not shown) that encodes an electrical signal, converts the encoded signal into a wireless signal such as infrared rays, and transmits the signal. Then, a unique identification number (ID) assigned to each electronic pen 50, a signal indicating the position coordinates (x, y) of the electronic pen 50 calculated by the coordinate calculation unit 57, the contact switch 51 (and each switch) ) And the like, the various signals necessary for generating the drawing signal are encoded in the drawing apparatus 40 and then converted into a radio signal. This radio signal is a transmission signal.
  • the wireless signal is wirelessly transmitted to the receiving unit 42 of the drawing apparatus 40.
  • the electronic pen 50 also has a power switch, a pilot lamp, a manually operated switch, and the like.
  • the power switch is a switch for controlling the power on / off of the electronic pen 50.
  • the pilot lamp is composed of a light emitting element (for example, LED) that can emit light by switching a plurality of light emission colors, and displays the operation state of the electronic pen 50 by switching light emission / non-light emission or light emission color.
  • the user can input characters and drawings on the image display surface when the electronic pen 50 is used remotely by operating a manual operation switch instead of the contact switch 51.
  • the electronic pen 50 can be switched so that the user can arbitrarily switch the drawing mode (for example, the color of the line used for drawing, the thickness of the line, the type of the line, etc.) by operating the manual operation switch. It may be configured.
  • the electronic pen 50 is switched between proximity use and remote use as follows. First, if the contact switch 51 is off when the electronic pen 50 is turned on, the electronic pen 50 is configured to be in a proximity use state. If the contact switch 51 is on when the electronic pen 50 is turned on, the electronic pen 50 is configured to be in a remote use state. . Then, by attaching the attachment 80 to the electronic pen 50, the attachment 80 is configured so that the contact switch 51 is maintained in the ON state. Thereby, if the power supply of the electronic pen 50 is turned on without mounting
  • the electronic pen 50 is provided with a switch for switching between proximity use and remote use, and the attachment 80 is attached to the electronic pen 50 so that the attachment 80 is attached to the electronic pen 50.
  • the electronic pen 50 may be configured to press this switch. Or you may comprise so that a user may operate manually the switch which switches proximity use and remote use.
  • a signal indicating whether the electronic pen 50 is in a proximity use or a remote use may be wirelessly transmitted from the transmission unit 58 to the drawing apparatus 40.
  • the drawing apparatus 40 includes a receiving unit 42 and a drawing unit 46 as shown in FIG.
  • the drawing device 40 creates a drawing signal based on the position coordinates (x, y) transmitted from the electronic pen 50 and outputs the drawing signal to the image display device 30.
  • the receiving unit 42 has a conversion circuit (not shown) that receives a radio signal wirelessly transmitted from the transmission unit 58 of the electronic pen 50, decodes the received signal, and converts it into an electrical signal. Then, the wireless signal wirelessly transmitted from the transmitter 58 is used to indicate the identification number (ID) of the electronic pen 50, the signal indicating the position coordinates (x, y) of the electronic pen 50, and the state of the contact switch 51 (and each switch) It converts into the signal etc. which represent, and outputs it to the drawing part 46.
  • ID identification number
  • x, y the signal indicating the position coordinates (x, y) of the electronic pen 50
  • the state of the contact switch 51 and each switch
  • the drawing unit 46 includes an image memory 47.
  • a drawing signal is created based on the position coordinates (x, y) output from the receiving unit 42 and stored in the image memory 47. Therefore, the image memory 47 shows a locus of changes in the position coordinates (x, y) when the contact switch 51 (or a manual operation switch) is on (a graphic input by the user using the electronic pen 50). Drawing signals are accumulated. Further, when the contact switch 51 (or a manual operation switch) is off, the drawing unit 46 creates a drawing signal for displaying a cursor at the position coordinates (x, y) and stores it in the image memory. The drawing unit 46 reads out the drawing signal stored in the image memory 47 and outputs the drawing signal to the image display device 30.
  • the drawing unit 46 distinguishes the position coordinates (x, y) from each other so that the traces of the electronic pens 50 are not confused with each other.
  • FIG. 9 is a three-view diagram illustrating an appearance of the electronic pen 50 according to the first embodiment of the present disclosure.
  • FIG. 9 shows a plan view, a front view, and a side view of the electronic pen 50.
  • the casing that forms the external appearance of the electronic pen 50 includes a main body case 60, a pen tip portion 70, and a pen tip cap 64. Inside the housing of the electronic pen 50, there are a plurality of circuit boards (not shown) on which the light receiving element 52, the contact switch 51, and their peripheral circuits are mounted, and a battery (not shown) for supplying power to them. Built in.
  • the main body case 60 includes a side case 60a and a side case 60b.
  • a power switch 68a, a pilot lamp 69, a manually operated switch 68c, and the like are provided between the side case 60a and the side case 60b.
  • a manually operated switch 68b is provided.
  • the side cases 60a and 60b have a battery cover 60c that is opened and closed when the battery is replaced.
  • the pen tip portion 70 is attached to the tip end portion of the main body case 60 by a pen tip cap 64 and is slidable in the direction of being pushed into the main body case 60.
  • a groove 67 for removably fixing the attachment 80 is provided around the nib cap 64.
  • FIG. 10 is a two-sided view and a cross-sectional view showing the shape of the periphery of the distal end portion of the main body case 60 of the electronic pen 50 in the first embodiment of the present disclosure.
  • FIG. 10 shows a plan view, a side view, and a plan sectional view of the periphery of the front end portion of the main body case 60.
  • a through hole 61 for projecting the light receiving element 52 and a part of the circuit board on which the light receiving element 52 is mounted (not shown in FIG. 10) from the main body case 60 is provided at the front end portion of the main body case 60.
  • Notches 63 a and 63 b for positioning the pen tip portion 70 are provided around the through hole 61.
  • a screw 62 for attaching a pen tip cap 64 is provided around the tip of the main body case 60.
  • FIG. 11 is a two-view diagram and a cross-sectional view illustrating the shape of the nib cap 64 of the electronic pen 50 according to the first embodiment of the present disclosure.
  • FIG. 11 shows a plan view, a side view, and a plan sectional view of the pen tip cap 64.
  • a penetrating hole 65 for penetrating the pen tip portion 70 is provided at the tip of the pen tip cap 64.
  • a screw 66 formed so as to be fitted to a screw 62 provided in the main body case 60 is provided inside the nib cap 64.
  • a groove 67 formed so as to be fitted to a flange provided on the attachment 80 is provided around the nib cap 64.
  • the pen tip cap 64 is detachably attached to the distal end portion of the main body case 60 with the pen tip portion 70 penetrating through the through hole 65 and protruding and held in the distal end direction.
  • the pen tip portion 70 is slidably fixed to the distal end portion of the main body case 60 by a pen tip cap 64.
  • the nib portion 70 can be replaced relatively easily by removing the nib cap 64 from the main body case 60.
  • FIG. 12 is a two-view diagram and a cross-sectional view illustrating the shape of the pen tip portion 70 of the electronic pen 50 according to the first embodiment of the present disclosure.
  • FIG. 12 shows a plan view, a side view, and a plan sectional view of the pen tip portion 70.
  • the pen point portion 70 has a relatively soft and moderate rigidity so as not to damage the surface of the panel 10 when contacting the panel 10 and to smoothly move the surface of the panel 10 while reducing the contact sound. It is made of a material such as polyacetal. This material may be polyamide, fluorine resin, or the like.
  • the pen tip portion 70 has a cavity 72 in which the light receiving element 52 can be accommodated.
  • a light capturing port 71 for capturing light received by the light receiving element 52 is provided at the tip of the pen tip portion 70.
  • the light intake port 71 is a through hole in the present embodiment, but is not limited to the through hole, and may be formed in a window shape with a material that transmits light, for example.
  • the pen tip portion 70 is provided with a positioning pin 73a for mounting the pen tip portion 70 on the tip of the main body case 60 and a switch pressing pin 73b for pressing the contact switch 51.
  • the positioning pin 73a penetrates the notch 63b, and the switch pressing pin 73b is shaped to penetrate the notch 63a.
  • the pen tip portion 70 is mounted on the distal end portion of the main body case 60 with the light receiving element 52 housed in the cavity 72.
  • FIG. 13 is an exploded view around the tip of the electronic pen 50 according to the first embodiment of the present disclosure.
  • the circuit board 78 on which the light receiving element 52 is mounted is arranged such that a part of the light receiving element 52 and the circuit board 78 protrudes from the through hole 61 provided in the front end portion of the main body case 60 in the front end direction. Arranged and fixed.
  • a contact switch 51 is mounted in the vicinity of the light receiving element 52 on the circuit board 78 (not shown).
  • a spring 75 and a buffer material 76 are provided between the pen tip portion 70 and the main body case 60.
  • the cushioning material 76 prevents the generation of contact sound caused by direct contact between the pen tip portion 70 and the tip portion of the main body case 60.
  • the pen tip portion 70 attached to the tip end portion of the main body case 60 by the pen tip cap 64 protrudes from the through hole 65 of the pen tip cap 64 in the tip direction, and further protrudes from the through hole 65 by the elasticity of the spring 75. It is pressed. Thereby, the pen point part 70 can slide in the direction pushed into the main body case 60. In a state where the pen tip portion 70 is not pushed into the main body case 60, the contact switch 51 is “off”.
  • the tip of the switch pressing pin 73b of the pen tip portion 70 comes into contact.
  • the contact switch 51 is turned on.
  • the contact switch 51 is turned off.
  • FIG. 14 is a two-view diagram and a cross-sectional view illustrating the shape of the attachment 80 according to the first embodiment of the present disclosure.
  • FIG. 14 shows a plan view, a side view, and a plan sectional view of the attachment 80.
  • the attachment 80 is attached to the electronic pen 50 so that the electronic pen 50 can be used at a position away from the panel 10.
  • the attachment 80 includes a body portion 81, a condensing lens 82, and a condensing lens fixing device 83.
  • the attachment 80 has a body portion 81 having a cylindrical shape as a casing. It is desirable that the inside of the body portion 81 has a structure that prevents reflection of light, for example, by applying a black paint.
  • One end of the body part 81 is formed in a shape that can be fixed with the condenser lens 82 sandwiched between it and the condenser lens fixture 83. Then, the condenser lens 82 is disposed at one end of the body part 81, and the condenser lens fixing device 83 is attached to the body part 81 with the condenser lens 82 interposed therebetween, so that the condenser lens 82 is attached to the body part 81. Fixed and attached. With this structure, in the attachment 80, the condenser lens 82 can be easily removed or replaced by removing the condenser lens fixing device 83. Note that the body part 81 may be formed so that the condenser lens 82 is directly fixed to one end of the body part 81 without using the condenser lens fixture 83.
  • An opening 89 for detachably mounting the electronic pen 50 is formed at the other end of the body 81 (the end facing the condenser lens 82).
  • the size of the electronic pen 50 is set to a size that does not cause a gap for unnecessary light to leak when the tip portion (pen tip cap 64) of the electronic pen 50 is inserted.
  • a flange 84 that fits into the groove 67 formed in the nib cap 64 is provided inside the body 81 that corresponds to the opening 89.
  • the condensing lens 82 has a function of condensing light incident on the body 81 from one end of the body 81 (that is, the end facing the opening 89), and the attachment 80 is an electron. When attached to the pen 50, the light emitted on the image display surface of the panel 10 is condensed on the light receiving element 52.
  • the attachment 80 is attached to the electronic pen 50 by inserting the tip end (pen tip cap 64) of the electronic pen 50 into the opening 89 of the body 81 and fitting the flange 84 with the groove 67 of the electronic pen 50. Removably fixed to the tip.
  • a pen tip cover 85 that pushes the pen tip portion 70 toward the main body case 60 when the attachment 80 is attached to the electronic pen 50 is provided inside the body portion 81. With the pen tip cover 85, the contact switch 51 is turned on while the attachment 80 is attached to the electronic pen 50.
  • the pen tip cover 85 is provided with a hole 86 that is centered on the optical axis of the condenser lens 82 and is set to an appropriate size for the light received by the light receiving element 52 to pass therethrough.
  • the pen tip cover 85 may be formed of a material that transmits light.
  • the length of the body 81 and the installation of the condenser lens 82 are set so that the light receiving element 52 is positioned at the focal length on the optical axis of the condenser lens 82.
  • the arrangement position and size of each component such as the position and the focal length of the condenser lens 82 are set. Therefore, when the attachment 80 is attached to the electronic pen 50 and the optical axis of the condensing lens 82 is directed to the panel 10, light emitted on the image display surface of the panel 10 is emitted from one end of the body 81 to the inside of the body 81. Is collected by the condenser lens 82, passes through the hole 86, and is received by the light receiving element 52. As described above, since the light energy incident on the light receiving element 52 is increased by the condenser lens 82, even in the electronic pen 50 located away from the panel 10, the light receiving element 52 receives light emitted on the image display surface. Is possible.
  • FIG. 15 is a perspective view showing an appearance of the electronic pen 50 with the attachment 80 according to the first embodiment of the present disclosure.
  • FIG. 16 is a cross-sectional view illustrating the structure of the distal end portion of the electronic pen 50 to which the attachment 80 according to the first embodiment of the present disclosure is attached.
  • components other circuit boards, batteries, etc.
  • FIG. 16 components (other circuit boards, batteries, etc.) other than the circuit board 78 are omitted.
  • the nib cover 85 is provided inside the attachment 80, the nib part 70 pressed in the direction protruding from the nib cap 64 by the force of the spring 75 is the main body by the nib cover 85. It is pushed into the case 60 side. As a result, the tip of the switch pressing pin 73b of the pen tip 70 presses the contact switch 51, and the contact switch 51 is turned on.
  • the light receiving element 52 When the attachment 80 is attached to the electronic pen 50, the light receiving element 52 is positioned at the focal length position on the optical axis of the condenser lens 82 as described above. Therefore, by directing the optical axis of the condensing lens 82 toward the panel 10, the light emitted from the panel 10 incident on the attachment 80 is collected by the condensing lens 82, and the holes 86 of the pen tip cover 85 and the pen tip portion 70. The light is received by the light receiving element 52 through the light intake port 71.
  • the attachment 80 is attached to the electronic pen 50, the attachment 80 is directed to the panel 10, and the electronic pen 50 is operated by manually switching on / off of the switch 68b, for example. Characters and drawings can be input to the panel 10 even from a position away from the panel 10.
  • FIG. 17 is a diagram schematically illustrating an example of a position coordinate detection operation when the electronic pen 50 is used in proximity in the image display system 100 according to the first embodiment of the present disclosure.
  • FIG. 18 is a diagram schematically illustrating an example of a position coordinate detection operation when the electronic pen 50 is remotely used in the image display system 100 according to the first embodiment of the present disclosure.
  • FIGS. 17 and 18 show the coordinate reference signal det input to the coordinate calculation unit 57 and the light reception signal output from the light receiving element 52 in addition to the drive voltage waveform.
  • the drive voltage waveforms shown in FIGS. 17 and 18 are the same as the drive voltage waveforms shown in FIG.
  • the time Toy1 (FIG. 17) from the time to1 to the time ty01 (the time when the proximity y coordinate detection period Py1 starts), and the time tx01 (the proximity x coordinate detection period).
  • Each of the times Tox2 (FIG. 18) up to (the time when the x coordinate detection period Px2 starts) is determined in advance.
  • the synchronization detection unit 56 detects the four consecutive light emission intervals in which the light emission intervals are the time To1, the time To2, and the time To3, and specifies the time to1, so that the time ty01 is based on the time to1.
  • the coordinate reference signal det having rising edges at time tx01, time ty02, and time tx02 can be generated and output to the subsequent coordinate calculation unit 57.
  • the coordinate reference signal det is generated based on the time to1 in the present embodiment, but may be generated based on any one of the times to2, to3, and to4 without being limited to the time to1.
  • the coordinate calculation unit 57 calculates the position coordinates (x, y) of the electronic pen 50 used in proximity.
  • the coordinate calculation unit 57 when the electronic pen 50 is used remotely first receives light emission of the light receiving threshold th or more from the light receiving element 52 from time ty02 onward after time ty02.
  • the time Tyy2 until the time tyy2 is measured with a counter provided inside.
  • the coordinate calculation unit 57 calculates the position coordinates (x, y) of the electronic pen 50 used remotely.
  • FIG. 19 is a diagram schematically illustrating an example of an operation when the electronic pen 50 is used in proximity in the image display system 100 according to the first embodiment of the present disclosure.
  • FIG. 20 is a diagram schematically illustrating an example of an operation when the electronic pen 50 is remotely used in the image display system 100 according to the first embodiment of the present disclosure.
  • the first light emission that sequentially moves from the upper end portion (first row) to the lower end portion (n-th row) of the image display area.
  • the line Ly1 is displayed on the panel 10.
  • the image display area sequentially moves from the left end (first pixel column) to the right end ((m / 3) pixel column).
  • the second light emitting line Lx1 to be displayed is displayed on the panel 10.
  • the coordinates (x, y) of the image display surface pointed to by the nearby electronic pen 50 are received at time tyy1 when the first light emission line Ly1 passes and time txx1 when the second light emission line Lx1 passes.
  • the element 52 receives the emitted light.
  • the light receiving element 52 outputs a light reception signal indicating that the light emission of the first light emission line Ly1 is received at the time tyy1, and receives the light emission of the second light emission line Lx1.
  • a light reception signal indicating this is output at time txx1.
  • the third light emission sequentially moves from the upper end (first row) to the lower end (n-th row) of the image display area.
  • the line Ly2 is displayed on the panel 10.
  • the image display area sequentially moves from the left end (first pixel column) to the right end ((m / 3) pixel column).
  • the fourth light emitting line Lx2 to be displayed is displayed on the panel 10.
  • the coordinates (x, y) of the image display surface pointed to by the remote-use electronic pen 50 are received at time tyy2 when the third light-emitting line Ly2 passes and time txx2 when the fourth light-emitting line Lx2 passes.
  • the element 52 receives light emission.
  • the light receiving element 52 outputs a light reception signal indicating that the light emission of the third light emission line Ly2 is received at time tyy2, and receives the light emission of the fourth light emission line Lx2.
  • a light reception signal indicating this is output at time txx2.
  • FIG. 21 is a diagram schematically illustrating an example of an operation when inputting with the electronic pen 50 in the image display system 100 according to the first embodiment of the present disclosure.
  • FIG. 21 shows an example when the electronic pen 50 is used in proximity, but the operation when using the electronic pen 50 remotely is performed by attaching the attachment 80 to the electronic pen 50 and replacing the contact switch 51 with the drawing pen. Since this switch is the same as the proximity use except that the switch (for example, the switch 68b) is manually operated, the description with reference to the drawings is omitted.
  • the drawing unit 46 outputs a drawing signal of a pattern (for example, a white circle or a dot) having a color and a size according to the drawing mode, centering on a pixel corresponding to the position coordinate (x, y). appear.
  • This drawing signal is stored in the image memory 47 of the drawing unit 46 while the contact switch 51 (for example, a manual operation switch 68b when used remotely) is on. Then, the image display device 30 displays an image based on the drawing signal stored in the image memory 47 of the drawing unit 46 on the panel 10.
  • the attachment 80 including the condenser lens 82 can be detachably attached to the electronic pen 50.
  • the light emitted by the x-coordinate detection pattern and the y-coordinate detection pattern displayed on the panel 10 is condensed by the condenser lens 82 and received by the light receiving element 52. It becomes possible. Therefore, even if the electronic pen 50 can only be used in close proximity to input the drawing or characters by bringing the pen tip portion 70 into contact with the image display surface of the panel 10, the attachment pen 80 can be attached to the position away from the panel 10. Remote use to input drawings and characters is possible.
  • the proximity y-coordinate detection subfield SFy1 for displaying the first light emission line Ly1 that emits light with a width corresponding to the “first number” on the panel 10, and the “third number”.
  • the second light emitting line Lx1 that emits light with a width according to the width
  • the width according to the “second number” larger than the “first number”
  • the remote y-coordinate detection subfield SFy2 for displaying the third light emission line Ly2 to be emitted on the panel 10, and the fourth light emission for emitting light with a width corresponding to the “fourth number” larger than the “third number”.
  • a remote x coordinate detection subfield SFx2 for displaying the line Lx2 on the panel 10 is generated.
  • the electronic pen 50 in the proximity use state without attaching the attachment 80 the light emitted from the first light emitting line Ly1 and the second light emitting line Lx1 is received and the position coordinates are calculated.
  • the electronic pen 50 attached with the attachment 80 and in a remote use state receives light emitted from the third light-emitting line Ly2 and the fourth light-emitting line Lx2, and calculates position coordinates. Accordingly, the electronic pen 50 in the proximity use state can detect position coordinates with relatively high accuracy, and the electronic pen 50 in the remote use state detects position coordinates at a position further away from the panel 10. It becomes possible to do.
  • the present invention is not limited to this configuration. It is not something.
  • a flange may be provided around the nib cap 64, and a groove fitted to the flange may be provided inside the attachment 80.
  • the electronic pen 50 that is used in proximity without attaching an attachment receives the light emission for coordinate detection generated in the proximity y-coordinate detection subfield SFy1 and the proximity x-coordinate detection subfield SFx1, and attaches the attachment.
  • the electronic pen 50 that is mounted remotely and used remotely has been described with respect to the configuration for receiving the light for coordinate detection generated in the remote y-coordinate detection subfield SFy2 and the remote x-coordinate detection subfield SFx2. It is not limited to.
  • the image display device 30 generates one y-coordinate detection subfield SFy and one x-coordinate detection subfield SFx, and the electronic pen 50 has coordinates generated in those subfields for both the proximity use and the remote use. It is good also as a structure which receives light emission for a detection.
  • the coordinate calculation unit 57 calculates the y coordinate based on the first light emitting line Ly1 and calculates the y coordinate based on the light received signal based on the third light emitting line Ly2 if the light receiving signal based on the first light emitting line Ly1 is less than the light receiving threshold th. It may be configured.
  • the x coordinate is calculated based on the light reception signal by the second light emission line Lx1, and the light reception signal by the second light emission line Lx1 is received.
  • the coordinate calculation unit 57 may be configured to calculate the x-coordinate based on the light reception signal from the fourth light-emitting line Lx2 if it is less than the threshold th.
  • a cursor When the electronic pen 50 is used remotely, for example, when a manually operated switch (for example, the switch 68b) is turned off, a cursor may be displayed on the image display surface. Thereby, the cursor can be displayed on the image display surface without using the laser beam used in the laser pointer. Further, when the electronic pen 50 is used in proximity, a drawing or cursor display may be performed using a manually operated switch instead of the contact switch 51.
  • a manually operated switch for example, the switch 68b
  • a screw similar to the screw 66 provided on the inner side of the pen tip cap 64 is provided on the inner side of the attachment. Otherwise, the configuration and operation are the same as those of the first embodiment.
  • main configurations different from the first embodiment will be described. The same parts as those shown in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.
  • FIG. 22 is a plan view, a side view, and a plan sectional view showing the shape of the attachment 180 in the second embodiment of the present disclosure.
  • FIG. 23 is a cross-sectional view illustrating the structure of the distal end portion of the electronic pen 50 to which the attachment 180 according to the second embodiment of the present disclosure is attached.
  • components other than the circuit board 78 are omitted.
  • the attachment 180 includes a body portion 181, a condensing lens 82, and a condensing lens fixing device 83.
  • the attachment 180 has a cylindrical body portion 181 as a casing.
  • One end portion of the trunk portion 181 can be fixed with the condenser lens 82 sandwiched between the condenser lens fixture 83 and the trunk portion 81 shown in the first embodiment.
  • the body 181 may be formed so that the condenser lens 82 is directly fixed to one end of the body 181 without using the condenser lens fixing device 83.
  • An opening 189 for attaching to the electronic pen 50 is formed at the other end of the body 181 (the end facing the condenser lens 82), and the inside of the body 181 corresponding to the opening 189 is formed.
  • the tip of the electronic pen 50 (the tip of the main body case 60) from which the pen tip cap 64 has been removed is inserted into the opening 189 of the body 181, and the screw 62 and the screw 184 are connected.
  • the attachment 180 is screwed to the distal end portion of the main body case 60 so as to be fitted. By doing so, the attachment 180 is detachably fixed to the tip of the electronic pen 50.
  • a pen tip cover 185 is provided inside the body portion 181 to gradually push the pen tip portion 70 toward the main body case 60 as the attachment 180 is gradually tightened to attach the attachment 180 to the electronic pen 50. With the pen tip cover 185, the contact switch 51 is turned on while the attachment 180 is attached to the electronic pen 50.
  • the pen tip cover 185 is provided with a hole 186 centered on the optical axis of the condenser lens 82 and set to an appropriate size for the light received by the light receiving element 52 to pass through.
  • the length of the body portion 181 and the condensing lens 82 are set so that the light receiving element 52 is positioned at the focal length on the optical axis of the condensing lens 82.
  • the arrangement position and size of each component, such as the installation position and the focal length of the condenser lens 82, are set. Therefore, when the attachment 180 is directly attached to the tip of the electronic pen 50 (tip of the main body case 60) from which the pen tip cap 64 has been removed and the optical axis of the condenser lens 82 is directed to the panel 10, the image of the panel 10 is displayed. As shown in FIG. 23, the light emitted on the display surface enters from one end of the body portion 181, is condensed by the condenser lens 82, passes through the hole 186, and is received by the light receiving element 52.
  • the attachment 180 having the above-described structure can be detachably attached to the electronic pen 50 and can be used remotely, similarly to the attachment 80 shown in the first embodiment.
  • the condensing lens is attached to one end portion of the body portion.
  • this “end portion” does not strictly mean the end portion of the body portion, but merely the end portion. It just represents the neighborhood.
  • the present invention does not limit the position of the condensing lens to the end of the body part, but arbitrarily sets it within a range in which the intended effect of the present disclosure, that is, the effect of condensing light on the light receiving element can be obtained. be able to. If this effect can be obtained, for example, a condensing lens may be arranged near the center of the body part.
  • a light shielding portion for preventing the incidence of unnecessary light may be provided between the condensing lens 82 and the light receiving element 52 inside the attachment.
  • the drawing device 40 and the electronic pen 50 may be electrically connected by an electric cable or the like, and a signal may be transmitted and received between the electronic pen and the drawing device via the electric cable.
  • the present disclosure makes it possible to use an electronic pen that is used in contact with the image display surface of the image display device at a position away from the image display surface. Therefore, the electronic pen attachment, the electronic pen system, and the electronic pen It is useful as an image display system provided with the system.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

La présente invention a pour but de permettre l'utilisation, à un emplacement extrait d'un écran d'affichage d'image d'un dispositif d'affichage d'image, d'un stylet qui est utilisé en contact avec l'écran d'affichage d'image. A cette fin, un élément de fixation de stylet (80) est monté de manière détachable sur un stylet comprenant un élément photorécepteur. L'élément de fixation de stylet comprend : une partie de corps (81) sur laquelle une partie d'ouverture (89) est formée pour un montage de manière détachable sur le stylet ; et une lentille de rassemblement de lumière (82) qui est fixée à la partie de corps. La lumière qui entre par une partie d'extrémité sur le côté opposé à l'ouverture dans la partie de corps traverse la lentille de rassemblement de lumière, et la lumière est rassemblée dans l'élément photorécepteur du stylet qui est monté sur la partie d'ouverture.
PCT/JP2013/005832 2012-10-02 2013-10-01 Élément de fixation de stylet, système de stylet et système d'affichage d'image comprenant le système de stylet WO2014054268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012220020A JP2015232739A (ja) 2012-10-02 2012-10-02 電子ペン用アタッチメントおよび画像表示システム
JP2012-220020 2012-10-02

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WO2014054268A1 true WO2014054268A1 (fr) 2014-04-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06308879A (ja) * 1992-08-19 1994-11-04 Fujitsu Ltd 光学式ポインティングシステム
JP2001148025A (ja) * 1999-09-07 2001-05-29 Nikon Gijutsu Kobo:Kk 位置検出装置及びその方法、平面姿勢検出装置及びその方法
JP2009009343A (ja) * 2007-06-27 2009-01-15 Fuji Xerox Co Ltd 電子筆記具、キャップ、コンピュータシステム
JP2009178935A (ja) * 2008-01-30 2009-08-13 Fuji Xerox Co Ltd 電子筆記具およびキャップ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06308879A (ja) * 1992-08-19 1994-11-04 Fujitsu Ltd 光学式ポインティングシステム
JP2001148025A (ja) * 1999-09-07 2001-05-29 Nikon Gijutsu Kobo:Kk 位置検出装置及びその方法、平面姿勢検出装置及びその方法
JP2009009343A (ja) * 2007-06-27 2009-01-15 Fuji Xerox Co Ltd 電子筆記具、キャップ、コンピュータシステム
JP2009178935A (ja) * 2008-01-30 2009-08-13 Fuji Xerox Co Ltd 電子筆記具およびキャップ

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