JPS5672580A - Read signal processor - Google Patents
Read signal processorInfo
- Publication number
- JPS5672580A JPS5672580A JP14931379A JP14931379A JPS5672580A JP S5672580 A JPS5672580 A JP S5672580A JP 14931379 A JP14931379 A JP 14931379A JP 14931379 A JP14931379 A JP 14931379A JP S5672580 A JPS5672580 A JP S5672580A
- Authority
- JP
- Japan
- Prior art keywords
- picture element
- corrected
- signal
- inputted
- leakage
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/401—Compensating positionally unequal response of the pick-up or reproducing head
Abstract
PURPOSE:To prevent deviation due to leakage among photodetectors in a photodetector array, by assigning the address of ROM according to the digital value of a picture element to be corrected and those of picture elements before and behind the picture element to be corrected. CONSTITUTION:Reflected light from original surface 1 is converted photoelectrically by photodetector array 4, whose output is inputted to amplifier 5, level adjusting circuit 8 and A/D converter 9. Then, ROM11 outputs the contents of the address assigned by the current picture element signal inputted from converter 9 and the last picture element signal inputted from latch circuit 10, i.e. the signal having the leakage of the current picture element signal corrected to quantizing circuit 12, which outputs a binary-coded signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14931379A JPS5672580A (en) | 1979-11-17 | 1979-11-17 | Read signal processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14931379A JPS5672580A (en) | 1979-11-17 | 1979-11-17 | Read signal processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5672580A true JPS5672580A (en) | 1981-06-16 |
Family
ID=15472384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14931379A Pending JPS5672580A (en) | 1979-11-17 | 1979-11-17 | Read signal processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5672580A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59105759A (en) * | 1982-12-08 | 1984-06-19 | Fuji Photo Film Co Ltd | Picture reading method by radiant rays |
JPS60206371A (en) * | 1984-03-30 | 1985-10-17 | Nippon Telegr & Teleph Corp <Ntt> | Picture signal processing system |
JPH0575859A (en) * | 1992-01-31 | 1993-03-26 | Matsushita Graphic Commun Syst Inc | Mtf correction device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4996617A (en) * | 1972-11-03 | 1974-09-12 | ||
JPS5377120A (en) * | 1976-12-20 | 1978-07-08 | Ricoh Co Ltd | Read-in system |
-
1979
- 1979-11-17 JP JP14931379A patent/JPS5672580A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4996617A (en) * | 1972-11-03 | 1974-09-12 | ||
JPS5377120A (en) * | 1976-12-20 | 1978-07-08 | Ricoh Co Ltd | Read-in system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59105759A (en) * | 1982-12-08 | 1984-06-19 | Fuji Photo Film Co Ltd | Picture reading method by radiant rays |
JPH0215154B2 (en) * | 1982-12-08 | 1990-04-11 | Fuji Photo Film Co Ltd | |
JPS60206371A (en) * | 1984-03-30 | 1985-10-17 | Nippon Telegr & Teleph Corp <Ntt> | Picture signal processing system |
JPH0575859A (en) * | 1992-01-31 | 1993-03-26 | Matsushita Graphic Commun Syst Inc | Mtf correction device |
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