JPS5567274A - Picture signal coding system - Google Patents
Picture signal coding systemInfo
- Publication number
- JPS5567274A JPS5567274A JP14005878A JP14005878A JPS5567274A JP S5567274 A JPS5567274 A JP S5567274A JP 14005878 A JP14005878 A JP 14005878A JP 14005878 A JP14005878 A JP 14005878A JP S5567274 A JPS5567274 A JP S5567274A
- Authority
- JP
- Japan
- Prior art keywords
- code
- run
- run length
- terminal
- signals
- 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 code picture signals with a small amount of cides by combining a forecast error code and a run length code to code them.
CONSTITUTION: In the figure, 1, 1', 1"... indicate level difference codes indicating difference between the density level of the preceding run and that of the current run, and 2, 2', 2",... indicate codes obtained by coding a run length where picture elememts of the density level of the preceding run continue. A unit to code signals dependently upon thus code string is constituted by pciture input device 3, A/D converter 4, clock signal generator 5, register 6, digital comparator 7, counter 8, register 9, level difference coder 10, run length coder 11, inverter 12, monostable multivibrator 13, delay circuit 14, delay circuit 15, level difference code terminal 16, strobe pulse terminal 17, and run length code terminal 18. In respect to coded signals coded by this constitution, a code volume compression rate is very high, and the capacity of the memory is small, and further, the transmission capacity of the transmission line is small.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14005878A JPS5567274A (en) | 1978-11-14 | 1978-11-14 | Picture signal coding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14005878A JPS5567274A (en) | 1978-11-14 | 1978-11-14 | Picture signal coding system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5567274A true JPS5567274A (en) | 1980-05-21 |
Family
ID=15259999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14005878A Pending JPS5567274A (en) | 1978-11-14 | 1978-11-14 | Picture signal coding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5567274A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5761380A (en) * | 1980-09-30 | 1982-04-13 | Ricoh Co Ltd | Picture encoding system |
JPS5838072A (en) * | 1981-08-31 | 1983-03-05 | Fujitsu Ltd | Variable density picture compression system |
JP2013138422A (en) * | 2008-11-10 | 2013-07-11 | Apple Inc | System and method for compressing stream of integer-valued data |
-
1978
- 1978-11-14 JP JP14005878A patent/JPS5567274A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5761380A (en) * | 1980-09-30 | 1982-04-13 | Ricoh Co Ltd | Picture encoding system |
JPH0213511B2 (en) * | 1980-09-30 | 1990-04-04 | Ricoh Kk | |
JPS5838072A (en) * | 1981-08-31 | 1983-03-05 | Fujitsu Ltd | Variable density picture compression system |
JPS6365190B2 (en) * | 1981-08-31 | 1988-12-14 | ||
JP2013138422A (en) * | 2008-11-10 | 2013-07-11 | Apple Inc | System and method for compressing stream of integer-valued data |
JP2016006961A (en) * | 2008-11-10 | 2016-01-14 | アップル インコーポレイテッド | System and method for compressing stream of integer-valued data |
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