JPS5530235A - Predictive coding system for facsimile signal - Google Patents
Predictive coding system for facsimile signalInfo
- Publication number
- JPS5530235A JPS5530235A JP10324478A JP10324478A JPS5530235A JP S5530235 A JPS5530235 A JP S5530235A JP 10324478 A JP10324478 A JP 10324478A JP 10324478 A JP10324478 A JP 10324478A JP S5530235 A JPS5530235 A JP S5530235A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- information
- mode
- pieces
- shift operation
- 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
Abstract
PURPOSE: To increase compression efficiency by suppressing redundancy by expressing information at a predection-failure position on a coding scanning line by the number of times of the generation of each state at several specific picture-element positions on a preceding line scanning before coding.
CONSTITUTION: Pieces of information on picture elements A to C in reference scanning line memory 13 picture element X on a coding scanning line, and picture- element information on D one picture-element before X are predicted. At the same time, pieces of picture-element information on B and C are inputted to mode discriminator 16 to make a decision on each mode M and the numbers of times of the generation of the modes are counted by counters 17 to 20. Then, decided mode information is inputted to control circuit 22. When a predicted value determined by pieces of information on A to D agrees with X, prediction unit 15 sends a signal of "0" and when not, it sends "1" to circuit 22. Circuit 22 continues the shift operation and input shift operation of memory 13 on receiving "0" and interrupts the shift operation on receiving "1" to instruct discrimination code generator 25 to generate a discrimination code for the mode, so that only the count output of the mode equivalent to "1" among outputs of counters will be extracted from gate 27.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10324478A JPS5530235A (en) | 1978-08-24 | 1978-08-24 | Predictive coding system for facsimile signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10324478A JPS5530235A (en) | 1978-08-24 | 1978-08-24 | Predictive coding system for facsimile signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5530235A true JPS5530235A (en) | 1980-03-04 |
Family
ID=14349019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10324478A Pending JPS5530235A (en) | 1978-08-24 | 1978-08-24 | Predictive coding system for facsimile signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5530235A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003095243A (en) * | 2001-09-19 | 2003-04-03 | Dainippon Printing Co Ltd | Varied carton |
-
1978
- 1978-08-24 JP JP10324478A patent/JPS5530235A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003095243A (en) * | 2001-09-19 | 2003-04-03 | Dainippon Printing Co Ltd | Varied carton |
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