Testing a vertical blanking interval signal
US7479981B2 · kind B2 · utility
11Cited by
15References
24Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Sep 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vertical blanking interval (VBI) signal testing tool captures, isolates, and analyzes a VBI signal to determine the quality of the VBI signal or signal source. A digitized VBI signal is received and analyzed according to industry standards. The VBI signal is first examined using thresholds, threshold points, and other points as a way of discerning waveforms in the signal and their individual characteristics. Thereafter, deviations of the VBI signal from industry standards are logged or displayed for review.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.