JPS57192124A - Forecasting encoder - Google Patents
Forecasting encoderInfo
- Publication number
- JPS57192124A JPS57192124A JP7739581A JP7739581A JPS57192124A JP S57192124 A JPS57192124 A JP S57192124A JP 7739581 A JP7739581 A JP 7739581A JP 7739581 A JP7739581 A JP 7739581A JP S57192124 A JPS57192124 A JP S57192124A
- Authority
- JP
- Japan
- Prior art keywords
- forecasting
- picture element
- signal
- output
- inputted
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE:To increase the accuracy of forecasting and to remarkably reduce the amount of transmitting information, by providing a forecasting device by a picture element and selecting an output of the forecasting device most suited to a group to which a picture element to be forecast belongs. CONSTITUTION:An input picture element XO from a terminal 1 is inputted to forecasting devices 21-23 and a status discriminator 25. The devices 21-23 output forecasting values X01-X03 belonging to the picture element XO from picture elements near the picture element XO. The device 25 discriminates a picture element group to which the picture element XO belongs. As a result of the discrimination, when a forecasting device is selected, the output result XOi of the forecasting device 2i is inputted to a forecasting converter 30 via a changeover switch 26. The converter 30 subtracts the forecasting value XOi from, e.g., the signal XO to output a differential signal YO. This signal YO is inputted to an encoder 40. The encoder 40 encodes the signal YO with the encoding method corresponding to the status discriminating signal outputted from the discriminating device 25 and outputs the signal to a line 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7739581A JPS57192124A (en) | 1981-05-20 | 1981-05-20 | Forecasting encoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7739581A JPS57192124A (en) | 1981-05-20 | 1981-05-20 | Forecasting encoder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57192124A true JPS57192124A (en) | 1982-11-26 |
JPS6161733B2 JPS6161733B2 (en) | 1986-12-26 |
Family
ID=13632696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7739581A Granted JPS57192124A (en) | 1981-05-20 | 1981-05-20 | Forecasting encoder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57192124A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62261230A (en) * | 1986-04-29 | 1987-11-13 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Method of compressing multiplexed level signal |
JPS63167526A (en) * | 1986-12-22 | 1988-07-11 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | Data compression equipment |
JPS6482711A (en) * | 1987-09-25 | 1989-03-28 | Hitachi Ltd | Encoding device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114963A (en) * | 1978-02-27 | 1979-09-07 | Nec Corp | Adaptive quantized circuit |
-
1981
- 1981-05-20 JP JP7739581A patent/JPS57192124A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114963A (en) * | 1978-02-27 | 1979-09-07 | Nec Corp | Adaptive quantized circuit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62261230A (en) * | 1986-04-29 | 1987-11-13 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Method of compressing multiplexed level signal |
JPH0359610B2 (en) * | 1986-04-29 | 1991-09-11 | Intaanashonaru Bijinesu Mashiinzu Corp | |
JPS63167526A (en) * | 1986-12-22 | 1988-07-11 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | Data compression equipment |
JPH0258814B2 (en) * | 1986-12-22 | 1990-12-10 | Intaanashonaru Bijinesu Mashiinzu Corp | |
JPS6482711A (en) * | 1987-09-25 | 1989-03-28 | Hitachi Ltd | Encoding device |
Also Published As
Publication number | Publication date |
---|---|
JPS6161733B2 (en) | 1986-12-26 |
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