Dropout correcting apparatus wherein dropout detecting flog signal is superimposed on reproduced video signal
US4731675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1985 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Sep 10, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/89
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dropout correcting apparatus has a dropout detecting circuit for detecting a dropout from a reproduced video signal. A mixing circuit superimposes a dropout detecting flag signal from the dropout detecting circuit upon the reproduced video signal. A time base fluctuation correcting circuit removes a jitter component of an output signal from the mixing circuit. A dropout detecting signal separating circuit separates the dropout detecting flag signal from the output signal of the time base fluctuation correcting circuit, and a dropout correcting circuit corrects the dropout of the reproduced video signal in response to the separated dropout detecting flag signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.