JPS55159236A - Detector for visual field position of light pen - Google Patents

Detector for visual field position of light pen

Info

Publication number
JPS55159236A
JPS55159236A JP6762279A JP6762279A JPS55159236A JP S55159236 A JPS55159236 A JP S55159236A JP 6762279 A JP6762279 A JP 6762279A JP 6762279 A JP6762279 A JP 6762279A JP S55159236 A JPS55159236 A JP S55159236A
Authority
JP
Japan
Prior art keywords
output
light pen
counter
address
screen
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
JP6762279A
Other languages
Japanese (ja)
Inventor
Seiji Totsugi
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP6762279A priority Critical patent/JPS55159236A/en
Publication of JPS55159236A publication Critical patent/JPS55159236A/en
Pending legal-status Critical Current

Links

Landscapes

  • Position Input By Displaying (AREA)

Abstract

PURPOSE: To avoid the change in the address data representing the position of the center of visual field of light pen used as the conversation purpose even with increased luminance of screen, in a CRT display unit of dot scanning system.
CONSTITUTION: The horizontal synchronizing signal is input from the input terminal 1, and clock pulse (a) is generated from the start stop oscillator 3, and the output (c) of time constant T1 is output from the monostable multivibrator 5 and it is given to the next FF6 and the output (f) is output, the X address counter 4 counts the clock pulse (d) for the period of T2, and when it reaches 256, FF5 is reset with the signal (e) from the terminal 41. When the light pen is touched on a suitable position on the screen, the output pulse of the light pen is input from the terminal 2, being the pulse having the width regulated with the monostable multivibrator 8 and FF9, the address of the counter 4 is loaded to the correction counter 13, the clock pulse from the oscillator 13 is frequency-divided at FF10, the result is corrected through addition in the numeral of the counter 13 to obtain the address corrected to the luminance change of screen.
COPYRIGHT: (C)1980,JPO&Japio
JP6762279A 1979-05-31 1979-05-31 Detector for visual field position of light pen Pending JPS55159236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6762279A JPS55159236A (en) 1979-05-31 1979-05-31 Detector for visual field position of light pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6762279A JPS55159236A (en) 1979-05-31 1979-05-31 Detector for visual field position of light pen

Publications (1)

Publication Number Publication Date
JPS55159236A true JPS55159236A (en) 1980-12-11

Family

ID=13350252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6762279A Pending JPS55159236A (en) 1979-05-31 1979-05-31 Detector for visual field position of light pen

Country Status (1)

Country Link
JP (1) JPS55159236A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6151230A (en) * 1984-08-18 1986-03-13 Sanyo Electric Co Ltd Light pen input device
JPS61170826A (en) * 1985-01-24 1986-08-01 Hitachi Ltd Input device of light pen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6151230A (en) * 1984-08-18 1986-03-13 Sanyo Electric Co Ltd Light pen input device
JPS61170826A (en) * 1985-01-24 1986-08-01 Hitachi Ltd Input device of light pen
JPH0353649B2 (en) * 1985-01-24 1991-08-15 Hitachi Seisakusho Kk

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