JPS5236934A - Optical input device - Google Patents
Optical input deviceInfo
- Publication number
- JPS5236934A JPS5236934A JP50113213A JP11321375A JPS5236934A JP S5236934 A JPS5236934 A JP S5236934A JP 50113213 A JP50113213 A JP 50113213A JP 11321375 A JP11321375 A JP 11321375A JP S5236934 A JPS5236934 A JP S5236934A
- Authority
- JP
- Japan
- Prior art keywords
- input device
- optical input
- modulating
- input signals
- prevent erroneous
- 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.)
- Granted
Links
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To prevent erroneous inputs due to external lights by modulating the input signals for the light pen.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50113213A JPS597979B2 (en) | 1975-09-19 | 1975-09-19 | Kougakuniyuriyokusouchi |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50113213A JPS597979B2 (en) | 1975-09-19 | 1975-09-19 | Kougakuniyuriyokusouchi |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5236934A true JPS5236934A (en) | 1977-03-22 |
JPS597979B2 JPS597979B2 (en) | 1984-02-22 |
Family
ID=14606421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50113213A Expired JPS597979B2 (en) | 1975-09-19 | 1975-09-19 | Kougakuniyuriyokusouchi |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS597979B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4644341A (en) * | 1984-07-05 | 1987-02-17 | Tri-Tronics Company, Inc. | Contrast indicating arrangement in photoelectric sensing systems |
JPH0525U (en) * | 1991-06-25 | 1993-01-08 | 株式会社クボタ | Combine culm length detection structure |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4930375A (en) * | 1970-06-23 | 1974-03-18 | ||
JPS50111930A (en) * | 1974-02-12 | 1975-09-03 |
-
1975
- 1975-09-19 JP JP50113213A patent/JPS597979B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4930375A (en) * | 1970-06-23 | 1974-03-18 | ||
JPS50111930A (en) * | 1974-02-12 | 1975-09-03 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4644341A (en) * | 1984-07-05 | 1987-02-17 | Tri-Tronics Company, Inc. | Contrast indicating arrangement in photoelectric sensing systems |
JPH0525U (en) * | 1991-06-25 | 1993-01-08 | 株式会社クボタ | Combine culm length detection structure |
Also Published As
Publication number | Publication date |
---|---|
JPS597979B2 (en) | 1984-02-22 |
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