Television advertising editing system
US4259689A · kind A · utility
19Cited by
10References
10Claims
0Family size
Inventors
Key dates
| Filing date | May 11, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | May 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S358/908
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television advertising editing system including a detector for sampling the video signal in a television set to charge a capacitor negatively during which the system is inactive but which permits the capacitor to be charged positively in the brief period wherein the video signal is interrupted between the television program material and commercial material for providing triggering output voltage which permits a relay, connected to the television audio output, to be energized either discontinuing or diminishing the audio output for a predetermined period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.