JPS5577273A - Picture reader - Google Patents
Picture readerInfo
- Publication number
- JPS5577273A JPS5577273A JP15171178A JP15171178A JPS5577273A JP S5577273 A JPS5577273 A JP S5577273A JP 15171178 A JP15171178 A JP 15171178A JP 15171178 A JP15171178 A JP 15171178A JP S5577273 A JPS5577273 A JP S5577273A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- read
- sensors
- scanning line
- sensor
- 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
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To make it possible to read pictures at a high speed without deteriorating picture quality by selectively alternating two picture read parts which differ in the aperture size of a read picture element, picture-element pitch and the number of picture element.
CONSTITUTION: On sensors I1 and I2, half images AM and MB of one scanning line on an original are formed. On sensor J, the whole image AB of the scanning line on the original is formed. Sensors I1, I2 and J have sensor elements equal in number. To read a picture at a low speed with high picture quality, picture elements on one scanning line are read by sensors I1 and I2 being divided into two. To read it at a high speed, picture elements on one scanning line are read out by sensor J with the (n)-number sensor elements. Next, read information on each picture element is quantized as to white, half tone and black and then picture-processed. Consequently, transmission is done at a double speed in comparison with that by two sensors I1 and I2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15171178A JPS5577273A (en) | 1978-12-07 | 1978-12-07 | Picture reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15171178A JPS5577273A (en) | 1978-12-07 | 1978-12-07 | Picture reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5577273A true JPS5577273A (en) | 1980-06-10 |
Family
ID=15524594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15171178A Pending JPS5577273A (en) | 1978-12-07 | 1978-12-07 | Picture reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5577273A (en) |
-
1978
- 1978-12-07 JP JP15171178A patent/JPS5577273A/en active Pending
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