Apparatus for measuring SC/H phase of composite video signal
US4788585A · kind A · utility
9Cited by
5References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Dec 30, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A measuring instrument for SC/H phase of a composite video signal is provided in which a phase comparison is made between at least a portion of a color burst extracted from the video signal and a continuous subcarrier frequency signal that is phase-locked to the leading edge of the horizontal sync phase so as to determine the particular SC/H pulse. The instrument includes a display device which provides a display concerning the measured SC/H phase in the form of characters and/or a waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.