Video signal processing arrangement for scan velocity modulation circuit
US6498626B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1999 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | May 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video display deflection circuit includes a source of a video signal for displaying picture information contained in the video signal in a screen of a cathode ray tube. The video signal on-provides selectively an on-screen-display information and a non-screen-display information. A source of a first control signal has a first value, when the video signal provides on-screen-display information and a second value, when said video signal provides non- on-screen-display information. A comb filter responsive to the first control signal has selectively a first delay element, when the first control signal is at the first value and a second delay element, when the first control signal is at the second value. The filter selectively establishes, in accordance with the first value, a first frequency response characteristic and, in accordance with the second value, a second frequency response characteristic. The filter is responsive to a video signal for generating from the video signal a filtered correction signal having a frequency spectrum in accordance with the values of the first control signal. The correction signal is coupled to an auxiliary deflection winding to produce, in accordanc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.