JPS648780A - Dark output correction system - Google Patents
Dark output correction systemInfo
- Publication number
- JPS648780A JPS648780A JP62164910A JP16491087A JPS648780A JP S648780 A JPS648780 A JP S648780A JP 62164910 A JP62164910 A JP 62164910A JP 16491087 A JP16491087 A JP 16491087A JP S648780 A JPS648780 A JP S648780A
- Authority
- JP
- Japan
- Prior art keywords
- output
- line
- photoelectric conversion
- conversion element
- correction information
- 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
- Picture Signal Circuits (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE:To obtain excellent black/white level ratio by reading correction information stored at picture read and correcting the read output while arithmetic operation is applied between the output of each photoelectric conversion element and the correction information. CONSTITUTION:The operation is switched by a changeover means 23 interposed among lines l1-l1aand l1b. The data is extracted by an extraction circuit 24 in a path of line l0 buffer circuit 22 line l1a by using a dard output for each photoelectric conversion element from a solid-state image pickup device 21 and given and stored in a storage means 25. Arithmetic operation is applied by an arithmetic means 26 between the output of each element obtained in the path of line l0 circuit 22 line l1b and the data of the correction information stored in the means 25 in reading an original actually by the device 21 in the correction operation to eliminate a dark output level for each photoelectric conversion element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62164910A JP2913045B2 (en) | 1987-06-30 | 1987-06-30 | Contact image sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62164910A JP2913045B2 (en) | 1987-06-30 | 1987-06-30 | Contact image sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS648780A true JPS648780A (en) | 1989-01-12 |
JP2913045B2 JP2913045B2 (en) | 1999-06-28 |
Family
ID=15802182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62164910A Expired - Lifetime JP2913045B2 (en) | 1987-06-30 | 1987-06-30 | Contact image sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2913045B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018194304A (en) * | 2017-05-12 | 2018-12-06 | 株式会社島津製作所 | Particle counter |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52122038A (en) * | 1976-04-07 | 1977-10-13 | Toshiba Corp | Fixed noise elimination of solid image sensor |
JPS5432013A (en) * | 1977-08-15 | 1979-03-09 | Nec Corp | Picture element correction system for image sensor |
JPS5511683A (en) * | 1978-07-12 | 1980-01-26 | Nec Corp | Sensor correction device |
JPS61283271A (en) * | 1985-06-07 | 1986-12-13 | Matsushita Electric Ind Co Ltd | Original reader |
JPS62117473A (en) * | 1985-11-18 | 1987-05-28 | Fuji Xerox Co Ltd | Dark output correcting circuit |
-
1987
- 1987-06-30 JP JP62164910A patent/JP2913045B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52122038A (en) * | 1976-04-07 | 1977-10-13 | Toshiba Corp | Fixed noise elimination of solid image sensor |
JPS5432013A (en) * | 1977-08-15 | 1979-03-09 | Nec Corp | Picture element correction system for image sensor |
JPS5511683A (en) * | 1978-07-12 | 1980-01-26 | Nec Corp | Sensor correction device |
JPS61283271A (en) * | 1985-06-07 | 1986-12-13 | Matsushita Electric Ind Co Ltd | Original reader |
JPS62117473A (en) * | 1985-11-18 | 1987-05-28 | Fuji Xerox Co Ltd | Dark output correcting circuit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018194304A (en) * | 2017-05-12 | 2018-12-06 | 株式会社島津製作所 | Particle counter |
Also Published As
Publication number | Publication date |
---|---|
JP2913045B2 (en) | 1999-06-28 |
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