JPS558163A - Information reading device - Google Patents
Information reading deviceInfo
- Publication number
- JPS558163A JPS558163A JP8112178A JP8112178A JPS558163A JP S558163 A JPS558163 A JP S558163A JP 8112178 A JP8112178 A JP 8112178A JP 8112178 A JP8112178 A JP 8112178A JP S558163 A JPS558163 A JP S558163A
- Authority
- JP
- Japan
- Prior art keywords
- storage time
- unit
- manuscript
- decided
- picture
- 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 eliminate the distortion of the picture signal caused by the difference of positions on the manuscript and thus to enhance the quality of the reproduced picture by varying the storage time for the storage element which stores the charge replied to the optical information.
CONSTITUTION: The sampling points are selected previously like (a), (b) and (c) in accordance with the light intensity, and then storage time Ta is decided for capacitor 23 of optical receiver 19 so that solid state pickup unit 14 may obtain the maximum output with sampling value (a) of the light volume. Thus region (a) is measured. At the same time, storage time Tb and Tc are decided for capacitor 23 so that unit 14 may obtain the maximum output with sampling value (b) and (c) each of the light volume, and then regions (b) and (c) are measured. With compounding of the measurement results at regions (a), (b) and (c), nearly uniform output can be obtained for unit 14. As a result, the good S/N is obtained at each region, and thus an extremely good picture of the manuscript can be read out.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8112178A JPS558163A (en) | 1978-07-04 | 1978-07-04 | Information reading device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8112178A JPS558163A (en) | 1978-07-04 | 1978-07-04 | Information reading device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS558163A true JPS558163A (en) | 1980-01-21 |
Family
ID=13737542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8112178A Pending JPS558163A (en) | 1978-07-04 | 1978-07-04 | Information reading device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS558163A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63193676A (en) * | 1987-02-05 | 1988-08-10 | Nippon Seimitsu Kogyo Kk | Image sensor driver |
-
1978
- 1978-07-04 JP JP8112178A patent/JPS558163A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63193676A (en) * | 1987-02-05 | 1988-08-10 | Nippon Seimitsu Kogyo Kk | Image sensor driver |
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