Video signal synchronization
US8203651B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jan 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns receive circuitry for extracting horizontal and vertical synchronization signals from a digital synchronization signal associated with a video signal, the digital synchronization signal having a plurality of pulses, the receive circuitry including detection circuitry arranged to determine a first value indicative of the time delay between a timing edge of a first pulse and a timing edge of a second pulse of the digital synchronization signal; and a synchronization extraction block arranged to determine that one of the plurality of pulses is a vertical synchronization pulse based on a comparison between the first value and a reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.