Apparatus and method for detecting vertical blanking interval
US7986370B2 · kind B2 · utility
0Cited by
23References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2006 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Jul 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for detecting vertical blanking intervals (VBI) is disclosed. The apparatus can identify and filter non-VBI signals, and calculate a level value for digitization corresponding to the type of television signals. The apparatus includes a detecting unit and a coupled computing unit. The detecting unit is for generating a detecting signal according to a television signal. The computing unit is for calculating a slope of the detecting signal, and for determining whether the television signal contains a clock run-in signal according to the slope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.