Tone-controlled video muting
US6775462B1 · kind B1 · utility
11Cited by
5References
30Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 12, 2000 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a method and apparatus to control muting a video output. A tone detector detects a first tone in a control tone signal generated by a video player during playing a video program from a master medium. The control tone signal is recorded on the master medium. The video player provides a video signal corresponding to the video program. A mute controller mutes a video output representing the video signal when the first tone is detected. The video output is recorded on a duplication medium in a video recorder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.