Information signal processing apparatus using a variable compression rate in accordance with contents of information signals
US6718121B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/812
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video disk recorder is such an apparatus as to compresses a video signal contained in a television signal at a predetermined compression rate to record it on an optical disk, and then play back the recorded signal. In such a video disk recorder, the television signal being input into a signal inputting portion is then compressed by a variable-rate encoder, and then sent out to a recording/playing portion. The signal sent out to the recording/playing portion is then recorded on an optical disk. In particular, the video disk recorder has a probability calculating portion for weighting signals according to degree of importance of the contents of the television signals, and a controlling portion for varying the compression rate in compliance with the weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.