JPS5443611A - Encoding system for facsimile signal - Google Patents
Encoding system for facsimile signalInfo
- Publication number
- JPS5443611A JPS5443611A JP10990477A JP10990477A JPS5443611A JP S5443611 A JPS5443611 A JP S5443611A JP 10990477 A JP10990477 A JP 10990477A JP 10990477 A JP10990477 A JP 10990477A JP S5443611 A JPS5443611 A JP S5443611A
- Authority
- JP
- Japan
- Prior art keywords
- scanning line
- memory
- forecast
- encoding
- supplied
- 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 increase the compression efficiency by giving a forecast process from the picture element of the previous scanning line with which the encodong is through.
CONSTITUTION: The binary signal of the n-th scanning line in memory 11a is supplied to forecast unit 12, along with the facsimile signals of the n + 1st scanning line of delay circuit D1 and D2. The code system of the n + 1st scanning line with which the forecast process is through is stored in memory 11b, and the contents of memory 11a and 11b are supplied by one bit to reference change picture element position detecting circuit 13a and out-of-forecast position detecting circuit 13b. The specified addresses of these circuits 13 and held in register 14a and 14b, and the relative distance between the specified addresses is detected through comparator 15. According to the comparison result, the encoding is given through encoders 17a∼17c, and the encoded value is stored in buffer memory 18. In the same way, the encoding is given to each scanning line in sequence.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10990477A JPS5443611A (en) | 1977-09-14 | 1977-09-14 | Encoding system for facsimile signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10990477A JPS5443611A (en) | 1977-09-14 | 1977-09-14 | Encoding system for facsimile signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5443611A true JPS5443611A (en) | 1979-04-06 |
Family
ID=14522094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10990477A Pending JPS5443611A (en) | 1977-09-14 | 1977-09-14 | Encoding system for facsimile signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5443611A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5286012A (en) * | 1976-01-12 | 1977-07-16 | Nec Corp | Prediction coding device |
-
1977
- 1977-09-14 JP JP10990477A patent/JPS5443611A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5286012A (en) * | 1976-01-12 | 1977-07-16 | Nec Corp | Prediction coding device |
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