JPS55159236A - Detector for visual field position of light pen - Google Patents
Detector for visual field position of light penInfo
- 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
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
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)
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 |
-
1979
- 1979-05-31 JP JP6762279A patent/JPS55159236A/en active Pending
Cited By (3)
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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