Method and apparatus for transmitting a compressed picture signal by using different encoding techniques for portions of each frame
US5040061A · kind A · utility
45Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1990 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Aug 13, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Intraframe coding and interframe coding are selectively employed for generating a compressed digital video frame in order to record a motion video signal on a small capacity recording medium such as a CD ROM. Motion compensation is also employed for effective compression, and motion compensation in only one direction is applied to an area of the frame in which interframe coding is applied that corresponds to an area of a previous frame in which the intraframe coding was applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.