JPS5555660A - Video signal processing system - Google Patents
Video signal processing systemInfo
- Publication number
- JPS5555660A JPS5555660A JP12788578A JP12788578A JPS5555660A JP S5555660 A JPS5555660 A JP S5555660A JP 12788578 A JP12788578 A JP 12788578A JP 12788578 A JP12788578 A JP 12788578A JP S5555660 A JPS5555660 A JP S5555660A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- scanning
- memory
- written
- video
- 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
Landscapes
- Editing Of Facsimile Originals (AREA)
- Facsimile Image Signal Circuits (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To obtain higher horizontal resolution, by scanning the original surface without exception and constituting desired video signal through the operation of a plurality of fine video elements scanned.
CONSTITUTION: The information on original is formed on the image sensor 4 via optical system. The sensor 4 driven with the sensor drive unit 11 repeats scanning, for example, ten times during one period of the main scanning. In case of the fifth scanning, the video signal from the video signal amplifying circuit 12 is written in the memory 8 with shaped binary signal in level by the video signal processing circuit 10. Further, the video signal is read in at the 10th scanning, to constitute the binary signal with level shaped, the video signal written in case of fifth scanning is read out from the memory 8, the video signals are compared, and if there is black point in either one, the video signal of dot is made black to write in it in the memory 8. On the other hand, the video signal corresponding to the pre-main scanning is written in the memory 9 during the main scanning period, and the content is outputted with speed conversion. Thus, the memories 8 and 9 perform write-in and readout operation alternately with the memory selection circuit 13 every one scanning.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12788578A JPS5555660A (en) | 1978-10-19 | 1978-10-19 | Video signal processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12788578A JPS5555660A (en) | 1978-10-19 | 1978-10-19 | Video signal processing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5555660A true JPS5555660A (en) | 1980-04-23 |
Family
ID=14971051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12788578A Pending JPS5555660A (en) | 1978-10-19 | 1978-10-19 | Video signal processing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5555660A (en) |
-
1978
- 1978-10-19 JP JP12788578A patent/JPS5555660A/en active Pending
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