JPS573133A - Light pen output controlling system - Google Patents

Light pen output controlling system

Info

Publication number
JPS573133A
JPS573133A JP7516980A JP7516980A JPS573133A JP S573133 A JPS573133 A JP S573133A JP 7516980 A JP7516980 A JP 7516980A JP 7516980 A JP7516980 A JP 7516980A JP S573133 A JPS573133 A JP S573133A
Authority
JP
Japan
Prior art keywords
light pen
gate
transmission route
signal
output
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
JP7516980A
Other languages
Japanese (ja)
Inventor
Shigeki Sano
Eiji Yonemoto
Yuji Yoshida
Hideo Takada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7516980A priority Critical patent/JPS573133A/en
Publication of JPS573133A publication Critical patent/JPS573133A/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)
  • Position Input By Displaying (AREA)

Abstract

PURPOSE:To reduce the number of input/output pins, by unifying the transmission route for a switch signal outputted from a light pen and the transmission route for a photodetection signal wherever practicable. CONSTITUTION:A switch signal of output signals of a light pen 1 takes a transmission route reaching a pulse width detecting circuit 15 from the light pen 1 through a voltage comparator 5-1, a waveform shaping circuit 6'-1, an OR gate 14, a driver 7', a common connection cable 12', and a receiver 8'. Meanwhile, a photodetection signal takes a transmission route reaching the pulse width detecting circuit 15 from the light pen 1 through a voltage comparator 5-2, a waveform shaping circuit 6'-2, the OR gate 14, the driver 7', the common connection cable 12', and the receiver 8'. Consequently, since the switch signal and the photodetection signal are transferred to a common output circuit by the OR gate 14 and are processed, the output signal of the driver 7' in the output side of the OR gate 14 has two pulse widths, and the cable is made common.
JP7516980A 1980-06-04 1980-06-04 Light pen output controlling system Pending JPS573133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7516980A JPS573133A (en) 1980-06-04 1980-06-04 Light pen output controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7516980A JPS573133A (en) 1980-06-04 1980-06-04 Light pen output controlling system

Publications (1)

Publication Number Publication Date
JPS573133A true JPS573133A (en) 1982-01-08

Family

ID=13568420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7516980A Pending JPS573133A (en) 1980-06-04 1980-06-04 Light pen output controlling system

Country Status (1)

Country Link
JP (1) JPS573133A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185024A (en) * 1983-04-04 1984-10-20 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS60201427A (en) * 1984-03-26 1985-10-11 Hochiki Corp Light pen buffer circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185024A (en) * 1983-04-04 1984-10-20 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPH053048B2 (en) * 1983-04-04 1993-01-13 Matsushita Electric Ind Co Ltd
JPS60201427A (en) * 1984-03-26 1985-10-11 Hochiki Corp Light pen buffer circuit
JPH0127449B2 (en) * 1984-03-26 1989-05-29 Hochiki Co

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