JPS5471923A - Coding system for television signal - Google Patents
Coding system for television signalInfo
- Publication number
- JPS5471923A JPS5471923A JP13890177A JP13890177A JPS5471923A JP S5471923 A JPS5471923 A JP S5471923A JP 13890177 A JP13890177 A JP 13890177A JP 13890177 A JP13890177 A JP 13890177A JP S5471923 A JPS5471923 A JP S5471923A
- Authority
- JP
- Japan
- Prior art keywords
- movement
- picture
- quantization characteristic
- case
- frame
- 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
Abstract
PURPOSE: To make high-quality coding possible efficiently without frame beat by performing codings different in quantization characteristic according to the movement of a picture.
CONSTITUTION: Control circuit 317 discriminates the state of the movement of a picture on a basis of occupied quantity signal 324 from buffer memory 323, where coded signals are stored, and signal 316 of difference components between frames. Then, mode selector signal 325 from circuit 317 controls so that coding 327 may be performed with fine quantization characteristic 308 in difference components between frames in case of a normal state of picture movement or be performed with rough quantization characteristic 307 in the frame in case of a comparatively rapid picture movement or be performed with fine quantization characteristic 308 in the frame in case of a comparatively small picture movement.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13890177A JPS5471923A (en) | 1977-11-21 | 1977-11-21 | Coding system for television signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13890177A JPS5471923A (en) | 1977-11-21 | 1977-11-21 | Coding system for television signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5471923A true JPS5471923A (en) | 1979-06-08 |
JPS5758112B2 JPS5758112B2 (en) | 1982-12-08 |
Family
ID=15232763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13890177A Granted JPS5471923A (en) | 1977-11-21 | 1977-11-21 | Coding system for television signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5471923A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS634784A (en) * | 1986-06-24 | 1988-01-09 | Sony Corp | High efficient coding device |
JPS634782A (en) * | 1986-06-24 | 1988-01-09 | Sony Corp | High efficient coding device |
JPH03190390A (en) * | 1989-12-19 | 1991-08-20 | Matsushita Electric Ind Co Ltd | Coder for moving picture signal |
WO1993002528A1 (en) * | 1991-07-19 | 1993-02-04 | Sony Corporation | Coding and decoding device for time-varying image |
US7173969B2 (en) | 2000-07-07 | 2007-02-06 | Matsushita Electric Industrial Co., Ltd. | Moving picture coding apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS526406A (en) * | 1975-07-07 | 1977-01-18 | Nippon Telegr & Teleph Corp <Ntt> | Inter-frame encoding system |
-
1977
- 1977-11-21 JP JP13890177A patent/JPS5471923A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS526406A (en) * | 1975-07-07 | 1977-01-18 | Nippon Telegr & Teleph Corp <Ntt> | Inter-frame encoding system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS634784A (en) * | 1986-06-24 | 1988-01-09 | Sony Corp | High efficient coding device |
JPS634782A (en) * | 1986-06-24 | 1988-01-09 | Sony Corp | High efficient coding device |
JPH03190390A (en) * | 1989-12-19 | 1991-08-20 | Matsushita Electric Ind Co Ltd | Coder for moving picture signal |
WO1993002528A1 (en) * | 1991-07-19 | 1993-02-04 | Sony Corporation | Coding and decoding device for time-varying image |
US7173969B2 (en) | 2000-07-07 | 2007-02-06 | Matsushita Electric Industrial Co., Ltd. | Moving picture coding apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5758112B2 (en) | 1982-12-08 |
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