JPS5447513A - Encoding system for television signal - Google Patents
Encoding system for television signalInfo
- Publication number
- JPS5447513A JPS5447513A JP11325577A JP11325577A JPS5447513A JP S5447513 A JPS5447513 A JP S5447513A JP 11325577 A JP11325577 A JP 11325577A JP 11325577 A JP11325577 A JP 11325577A JP S5447513 A JPS5447513 A JP S5447513A
- Authority
- JP
- Japan
- Prior art keywords
- quantizing
- frame
- circuit
- signal sent
- band compression
- 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 omit the buffer memory as well as to reduce the frame capacity down to a half by encoding the TV signals between frames through plural times of the band compression after having an orthogonal conversion within the frame.
CONSTITUTION: The TV signal undergoes digitization 52, blocking 53 within the frame and orthogonal conversion 54. The band compression is carried out within the frame via quantizing circuit 55 featuring the coarse quantizing property and quantizing circuit 56 featuring the fine quantizing property, and different amount 57 is obtained between the output signal sent from circuit 56 and the output of the same address of the preceding frame in frame memory 60. Whether all of the difference value can be transmitted or not is then decided (58). If the transmission is possible, band compression 59 is given between the frames for the quantizing signal sent from circuit 56 to then carry out encoding 65. If the transmission is impossible, the quantizing signal sent from circuit 55 is encoded (64) to be transmitted to the transmission line
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11325577A JPS5447513A (en) | 1977-09-22 | 1977-09-22 | Encoding system for television signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11325577A JPS5447513A (en) | 1977-09-22 | 1977-09-22 | Encoding system for television signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5447513A true JPS5447513A (en) | 1979-04-14 |
JPS5758110B2 JPS5758110B2 (en) | 1982-12-08 |
Family
ID=14607504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11325577A Granted JPS5447513A (en) | 1977-09-22 | 1977-09-22 | Encoding system for television signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5447513A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59165584A (en) * | 1983-03-09 | 1984-09-18 | Nec Corp | Coding device of television signal |
JPS63274282A (en) * | 1987-04-30 | 1988-11-11 | Nec Corp | Orthogonal transformation encoding system and its device |
US5327173A (en) * | 1989-06-19 | 1994-07-05 | Fujitsu Limited | Moving image coding apparatus and moving image decoding apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5283014A (en) * | 1975-12-29 | 1977-07-11 | Matsushita Electric Ind Co Ltd | Rectangular coordinates conversion coding |
-
1977
- 1977-09-22 JP JP11325577A patent/JPS5447513A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5283014A (en) * | 1975-12-29 | 1977-07-11 | Matsushita Electric Ind Co Ltd | Rectangular coordinates conversion coding |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59165584A (en) * | 1983-03-09 | 1984-09-18 | Nec Corp | Coding device of television signal |
JPS63274282A (en) * | 1987-04-30 | 1988-11-11 | Nec Corp | Orthogonal transformation encoding system and its device |
US5327173A (en) * | 1989-06-19 | 1994-07-05 | Fujitsu Limited | Moving image coding apparatus and moving image decoding apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5758110B2 (en) | 1982-12-08 |
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