JPS56115072A - Picture processor - Google Patents
Picture processorInfo
- Publication number
- JPS56115072A JPS56115072A JP1740080A JP1740080A JPS56115072A JP S56115072 A JPS56115072 A JP S56115072A JP 1740080 A JP1740080 A JP 1740080A JP 1740080 A JP1740080 A JP 1740080A JP S56115072 A JPS56115072 A JP S56115072A
- Authority
- JP
- Japan
- Prior art keywords
- output
- original
- gate
- binary
- comparators
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Heads (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Image Input (AREA)
Abstract
PURPOSE:To regenerate a half tone for both a mesh original and nonmesh original, by installing the 1st process circuit that gives a binary coding to the photoelectric conversion output with a constant threshold level secured for binary coding plus the 2nd process circuit that switches the threshold level for binary coding and then selecting optionally one of these two process circuits. CONSTITUTION:The reflected rays from the original 1 are image-formed on the 1- dimensional solid state pickup element 3 through the image forming lens 2. The picture signals received a photoelectric conversion by the clock sent from the clock generator 4 are read out successively and supplied to the comparators 5-8 plus 12. The threshold level of the comparator 12 is set at a certain value that is decided by the resistances R6 and R7, and the output binary-coded at the comparator 12 is supplied to the gate 19. At the same time, the threshold levels of the comparators 5-8 are set at different values that are decided by the resistances R1-R5. Then the binary-coded output of the comparators 5-8 are applied to the data selector 9 and then read out successively by the FF10 and FF11 to be applied to the gate 18. Then the output of the gate 18 is selected by the selection signal SEL sent from the terminal 16 for a mesh original; and the output of the gate 19 is selected for a nonmesh original respectively.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1740080A JPS56115072A (en) | 1980-02-15 | 1980-02-15 | Picture processor |
DE19803049369 DE3049369A1 (en) | 1979-12-29 | 1980-12-29 | IMAGE REPRODUCTION DEVICE |
GB8041374A GB2069793B (en) | 1979-12-29 | 1980-12-29 | Half-tone facsimile |
GB08400010A GB2140646B (en) | 1979-12-29 | 1984-01-03 | Image reproducing equipment |
US07/224,257 US4812910A (en) | 1979-12-29 | 1988-07-26 | Image reproducing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1740080A JPS56115072A (en) | 1980-02-15 | 1980-02-15 | Picture processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56115072A true JPS56115072A (en) | 1981-09-10 |
Family
ID=11942938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1740080A Pending JPS56115072A (en) | 1979-12-29 | 1980-02-15 | Picture processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56115072A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123357A (en) * | 1984-11-20 | 1986-06-11 | Brother Ind Ltd | Optical reader |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53136423A (en) * | 1977-05-02 | 1978-11-29 | Nippon Telegr & Teleph Corp <Ntt> | Network point processing system for picture signal |
JPS54109717A (en) * | 1978-02-16 | 1979-08-28 | Oki Electric Ind Co Ltd | Transmission system for narrow-band still picture |
-
1980
- 1980-02-15 JP JP1740080A patent/JPS56115072A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53136423A (en) * | 1977-05-02 | 1978-11-29 | Nippon Telegr & Teleph Corp <Ntt> | Network point processing system for picture signal |
JPS54109717A (en) * | 1978-02-16 | 1979-08-28 | Oki Electric Ind Co Ltd | Transmission system for narrow-band still picture |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123357A (en) * | 1984-11-20 | 1986-06-11 | Brother Ind Ltd | Optical reader |
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