JPS5556230A - Coordinate detector - Google Patents
Coordinate detectorInfo
- Publication number
- JPS5556230A JPS5556230A JP12833178A JP12833178A JPS5556230A JP S5556230 A JPS5556230 A JP S5556230A JP 12833178 A JP12833178 A JP 12833178A JP 12833178 A JP12833178 A JP 12833178A JP S5556230 A JPS5556230 A JP S5556230A
- Authority
- JP
- Japan
- Prior art keywords
- ring counter
- output
- pen
- loop
- loops
- 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
Abstract
PURPOSE: To realize a coordinate detector which detects a position indicated by a signal generator, by detecting the fixed number of repetitive signals from repetitive signal generators by detectors arranged on a tablet confronting above-mentioned generators.
CONSTITUTION: When an output appears at only Dr, for example, of ring counter 8, Br and Cr of analog switch 7 are both closed to form a loop of conductors (lr) and (lr+1). If pen 6 resides in this loop, the output of amplifier 9 increases in accordance with output Dr and is pulse-converted by voltage comparator 11 and counted 12, thereby performing fixed coordinate detection 4 in consideration of a start point of ring counter 8. Ring counter 8 forms loops in sequence, but when pen 6 does not reside in loops, outputs are zero or extermely small and corrdinate detection operation tolerant of external noises is performed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12833178A JPS5556230A (en) | 1978-10-20 | 1978-10-20 | Coordinate detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12833178A JPS5556230A (en) | 1978-10-20 | 1978-10-20 | Coordinate detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5556230A true JPS5556230A (en) | 1980-04-24 |
Family
ID=14982138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12833178A Pending JPS5556230A (en) | 1978-10-20 | 1978-10-20 | Coordinate detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556230A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59139488A (en) * | 1983-01-31 | 1984-08-10 | Nippon Telegr & Teleph Corp <Ntt> | Electromagnetic induction type digitizer |
JPS6378221A (en) * | 1986-09-22 | 1988-04-08 | Toshiba Corp | Coordinate input device |
US5138118A (en) * | 1991-05-06 | 1992-08-11 | International Business Machines Corporation | Pulsed pen for use with a digitizer tablet |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148929A (en) * | 1974-10-25 | 1976-04-27 | Fujitsu Ltd | |
JPS5171031A (en) * | 1974-12-17 | 1976-06-19 | Omron Tateisi Electronics Co |
-
1978
- 1978-10-20 JP JP12833178A patent/JPS5556230A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148929A (en) * | 1974-10-25 | 1976-04-27 | Fujitsu Ltd | |
JPS5171031A (en) * | 1974-12-17 | 1976-06-19 | Omron Tateisi Electronics Co |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59139488A (en) * | 1983-01-31 | 1984-08-10 | Nippon Telegr & Teleph Corp <Ntt> | Electromagnetic induction type digitizer |
JPH0437448B2 (en) * | 1983-01-31 | 1992-06-19 | Nippon Telegraph & Telephone | |
JPS6378221A (en) * | 1986-09-22 | 1988-04-08 | Toshiba Corp | Coordinate input device |
JPH0519168B2 (en) * | 1986-09-22 | 1993-03-16 | Tokyo Shibaura Electric Co | |
US5138118A (en) * | 1991-05-06 | 1992-08-11 | International Business Machines Corporation | Pulsed pen for use with a digitizer tablet |
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