Power-responsive ghost cancelling system
US4517601A · kind A · utility
6Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1983 |
| Grant date | May 14, 1985 |
| Priority date | — |
| Expiry date | Mar 7, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/211
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A ghost cancelling system having a transversal filter including a weighting circuit and a memory, a power responsive circuit for detecting the time when a power switch is turned on, and an activating circuit connected between the power responsive circuit and the storage capacitor for charging the latter during a predetermined period when the power switch is turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.