Video/audio compressing device and reproducing device capable of preventing deterioration of video with synchronization between video and audio
US5565996A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/781
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In video/audio compression, a video signal is separated into luminance and a color difference. The color difference is partially subsampled. An interframe difference is compression-coded by an encoding unit. At that time, particular subsampling information corresponding to a designated reproducing rate is extracted from subsampling information. The particular subsampling information is inserted into compressed video data. On the other hand, in video/audio reproduction, the color difference of the video, which has partially been subsampled, are interpolated by a decoding unit with reference to the subsampling information inserted into the compressed video data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.