Timebase corrector with drop-out compensation
US5245430A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/956
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A timebase corrector is provided, in which an input video signal is written in a timebase error correcting memory on the basis of a clock pulse synchronized with a synchronizing signal in the input video signal and the signal written in the time base error correcting memory is read out on the basis of a read clock pulse synchronized with a reference signal to thereby correct a timebase error. In this timebase corrector, when a drop-out of a first vertical synchronizing signal in the input video signal occurs, the write of the input video signal in the timebase error correcting memory is inhibited, and a timebase error is corrected by the input video signal already written in the memory until a second vertical synchronizing signal is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.