JPS5541080A - Coder for video signal - Google Patents
Coder for video signalInfo
- Publication number
- JPS5541080A JPS5541080A JP11535778A JP11535778A JPS5541080A JP S5541080 A JPS5541080 A JP S5541080A JP 11535778 A JP11535778 A JP 11535778A JP 11535778 A JP11535778 A JP 11535778A JP S5541080 A JPS5541080 A JP S5541080A
- Authority
- JP
- Japan
- Prior art keywords
- fed
- signal
- coding
- predicted
- coder
- 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 Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE: To efficiently perform the coding of paper including picture, by selecting one pair among the predicted error signal and the predicted state signal obtained from a plurality of prediction means through the comparison of the number of unpredicted case for the predicted error signal and by coding through the use of this.
CONSTITUTION: In coding the video signal including network picture and characters, the input video signal 1 is fed to a plurality of prediction units 4 and 5, the output of the prediction units 4 and 5 is controlled with the control signal from the timing generation circuit 6 inputting the clock 2 and the phase signal 3, and the predicted state signal and the predicted error signal are fed to the shift registers 11 and 12. Further, it is fed to the counters 9 and 10 via the logical product gates 7 and 8, the number of not predicted cases is fed to the comparator 14 with the control signal of the circuit 6, and the selected signal as the result of comparison is fed to the coder 17. Further, the output of the registers 11 and 12 is fed to the coder 17 via the multiplexers 15 and 16 to efficiently perform the coding of paper including picture according to the timing of the circuit 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11535778A JPS5541080A (en) | 1978-09-19 | 1978-09-19 | Coder for video signal |
GB7905760A GB2016872B (en) | 1978-02-23 | 1979-02-19 | Digital facsimile transmission system for screened pictures |
US06/014,508 US4215375A (en) | 1978-02-23 | 1979-02-23 | Digital facsimile transmission system for screened pictures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11535778A JPS5541080A (en) | 1978-09-19 | 1978-09-19 | Coder for video signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5541080A true JPS5541080A (en) | 1980-03-22 |
Family
ID=14660518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11535778A Pending JPS5541080A (en) | 1978-02-23 | 1978-09-19 | Coder for video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5541080A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03274967A (en) * | 1990-03-26 | 1991-12-05 | Canon Inc | Picture coder |
JPH046954A (en) * | 1990-04-24 | 1992-01-10 | Canon Inc | Picture prediction coding system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5286012A (en) * | 1976-01-12 | 1977-07-16 | Nec Corp | Prediction coding device |
-
1978
- 1978-09-19 JP JP11535778A patent/JPS5541080A/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 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03274967A (en) * | 1990-03-26 | 1991-12-05 | Canon Inc | Picture coder |
JPH046954A (en) * | 1990-04-24 | 1992-01-10 | Canon Inc | Picture prediction coding system |
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