JPS5513574A - Data coding system - Google Patents
Data coding systemInfo
- Publication number
- JPS5513574A JPS5513574A JP8635578A JP8635578A JPS5513574A JP S5513574 A JPS5513574 A JP S5513574A JP 8635578 A JP8635578 A JP 8635578A JP 8635578 A JP8635578 A JP 8635578A JP S5513574 A JPS5513574 A JP S5513574A
- Authority
- JP
- Japan
- Prior art keywords
- code
- coded
- code table
- data
- output
- 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
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE: To improve the lowering of a compression rate in case that a coded code is extracted from a code table, by changing the code table for picture information to make the number of code bits small when data of a facsimile is coded.
CONSTITUTION: When data of a facsimile is coded, the tip of original 1 is detected by micro switch 2, and the optical image dependent upon flash circuit 3 is projected to photoelectric converter 5, and analogue signals corresponding to the picture level dependent upon this projection are supplied to comparator COM1 to output a binary signal indicating whether they are higher than comparison voltage Vr2 or not. This binary signal is converted to a code table selection code by encoder EC1 and is given to data selector DSE. Then, the output obtained by setting the input of a mode set switch by an operator is given to encoder EC2, and the output of data selector DES is supplied to the CPU of coder 6 through latch LU1, and the number of code bits of picture information is made small, thereby improving the compression rate in case of the read from the code table.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8635578A JPS5513574A (en) | 1978-07-15 | 1978-07-15 | Data coding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8635578A JPS5513574A (en) | 1978-07-15 | 1978-07-15 | Data coding system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5513574A true JPS5513574A (en) | 1980-01-30 |
Family
ID=13884573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8635578A Pending JPS5513574A (en) | 1978-07-15 | 1978-07-15 | Data coding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5513574A (en) |
-
1978
- 1978-07-15 JP JP8635578A patent/JPS5513574A/en active Pending
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