JPS56108135A - Pen-on detector - Google Patents

Pen-on detector

Info

Publication number
JPS56108135A
JPS56108135A JP931480A JP931480A JPS56108135A JP S56108135 A JPS56108135 A JP S56108135A JP 931480 A JP931480 A JP 931480A JP 931480 A JP931480 A JP 931480A JP S56108135 A JPS56108135 A JP S56108135A
Authority
JP
Japan
Prior art keywords
pen
fet111
voltage
input
gates
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
JP931480A
Other languages
Japanese (ja)
Inventor
Yoshimi Takahashi
Mitsuo Saito
Takeshi Sato
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 JP931480A priority Critical patent/JPS56108135A/en
Publication of JPS56108135A publication Critical patent/JPS56108135A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To ensure a use of the detection terminal for input of coordinates for the purpose other than the input of coordinates, by detecting the pen-on based on the difference of impedances obtained with a pen pressed to the tablet and detached from the tablet each. CONSTITUTION:In case the F/F104 is reset, i.e., the coordinate input is indicated, the output of the F/F103 passes through the gates 105 and 110. Then a fixed level of voltage is applied to the resistance film 102 in the direction of X or Y and via the diodes D1-D4. In this case, the FET111 is turned off, and the voltage emerging at the detection terminal 110 is converted into the digital signal by the A/D converter 112. When the F/F103 is set or indicates the pen-on, the voltage of a fixed level is applied to the resistance film in both directions X and Y via the gates 105 and 106 to turn on the FET111. In this instant, the terminal 110 is connected to the pen-on detecting circuit via the FET111.
JP931480A 1980-01-31 1980-01-31 Pen-on detector Pending JPS56108135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP931480A JPS56108135A (en) 1980-01-31 1980-01-31 Pen-on detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP931480A JPS56108135A (en) 1980-01-31 1980-01-31 Pen-on detector

Publications (1)

Publication Number Publication Date
JPS56108135A true JPS56108135A (en) 1981-08-27

Family

ID=11717003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP931480A Pending JPS56108135A (en) 1980-01-31 1980-01-31 Pen-on detector

Country Status (1)

Country Link
JP (1) JPS56108135A (en)

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