JPS5484916A - Picture read-in unit - Google Patents
Picture read-in unitInfo
- Publication number
- JPS5484916A JPS5484916A JP15333977A JP15333977A JPS5484916A JP S5484916 A JPS5484916 A JP S5484916A JP 15333977 A JP15333977 A JP 15333977A JP 15333977 A JP15333977 A JP 15333977A JP S5484916 A JPS5484916 A JP S5484916A
- Authority
- JP
- Japan
- Prior art keywords
- original
- scanning
- read
- width
- 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
Landscapes
- Image Input (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE: To avoid disturbance of binary processing, by making the threshold voltage for binarization to correct set ratio to the analog signal of original picture, through the illumination of original from the time when read-in scanning enters the width of original in facsimile.
CONSTITUTION: The picture information at each part of original is obtained sequentially as analog signal with the read-in head 7 receiving ligth with the solidstate photoelectric conversion element for the reflection light radiated on the original DP for the lamp or the scanning of electronic circuit of solidstate photoelectric conversion element or scanning by mechanical driving of reflection mirror, and this is converted into binary picture signal with the picture signal processor. In this case, the illumination control means 5 controlling the amount of illumination light for the original is controlled with the original width scanning period display signal from the read-in width timing circuit 6 producing the signal representing that the read-in scanning enters the range of original width substantially.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15333977A JPS5484916A (en) | 1977-12-20 | 1977-12-20 | Picture read-in unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15333977A JPS5484916A (en) | 1977-12-20 | 1977-12-20 | Picture read-in unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5484916A true JPS5484916A (en) | 1979-07-06 |
Family
ID=15560302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15333977A Pending JPS5484916A (en) | 1977-12-20 | 1977-12-20 | Picture read-in unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5484916A (en) |
-
1977
- 1977-12-20 JP JP15333977A patent/JPS5484916A/en active Pending
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