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JPS5424538A - Liquid crystal type tablet - Google Patents

Liquid crystal type tablet

Info

Publication number
JPS5424538A
JPS5424538A JP8918777A JP8918777A JPS5424538A JP S5424538 A JPS5424538 A JP S5424538A JP 8918777 A JP8918777 A JP 8918777A JP 8918777 A JP8918777 A JP 8918777A JP S5424538 A JPS5424538 A JP S5424538A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal type
type tablet
input
pen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8918777A
Other languages
Japanese (ja)
Inventor
Shinichiro Ohora
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8918777A priority Critical patent/JPS5424538A/en
Publication of JPS5424538A publication Critical patent/JPS5424538A/en
Pending legal-status Critical Current

Links

Landscapes

  • Position Input By Displaying (AREA)

Abstract

PURPOSE: To change the color for the position indicated with a light pen to confirm input, by applying low frequency pulses to the transparent electrode of the detected position with the input pen.
COPYRIGHT: (C)1979,JPO&Japio
JP8918777A 1977-07-27 1977-07-27 Liquid crystal type tablet Pending JPS5424538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8918777A JPS5424538A (en) 1977-07-27 1977-07-27 Liquid crystal type tablet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8918777A JPS5424538A (en) 1977-07-27 1977-07-27 Liquid crystal type tablet

Publications (1)

Publication Number Publication Date
JPS5424538A true JPS5424538A (en) 1979-02-23

Family

ID=13963718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8918777A Pending JPS5424538A (en) 1977-07-27 1977-07-27 Liquid crystal type tablet

Country Status (1)

Country Link
JP (1) JPS5424538A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208877A (en) * 1982-05-31 1983-12-05 Seiko Instr & Electronics Ltd Coordinate input device
JPS61294537A (en) * 1985-06-24 1986-12-25 Brother Ind Ltd Display device provided with pen input function
JPH02213923A (en) * 1989-02-15 1990-08-27 Canon Inc Inspection back-up device
US5491706A (en) * 1993-04-07 1996-02-13 Sharp Kabushiki Kaisha Display-integrated type tablet device capable of detecting correct coordinates at a tip end of a detection pen by detecting external noise
US5534892A (en) * 1992-05-20 1996-07-09 Sharp Kabushiki Kaisha Display-integrated type tablet device having and idle time in one display image frame to detect coordinates and having different electrode densities

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208877A (en) * 1982-05-31 1983-12-05 Seiko Instr & Electronics Ltd Coordinate input device
JPS61294537A (en) * 1985-06-24 1986-12-25 Brother Ind Ltd Display device provided with pen input function
JPH02213923A (en) * 1989-02-15 1990-08-27 Canon Inc Inspection back-up device
US5534892A (en) * 1992-05-20 1996-07-09 Sharp Kabushiki Kaisha Display-integrated type tablet device having and idle time in one display image frame to detect coordinates and having different electrode densities
US5491706A (en) * 1993-04-07 1996-02-13 Sharp Kabushiki Kaisha Display-integrated type tablet device capable of detecting correct coordinates at a tip end of a detection pen by detecting external noise

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