Horizontal deflection circuit and bidirectional horizontal deflection apparatus
US6534920B1 · kind B1 · utility
6Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G1/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An amplitude control circuit controls the amplitude of a correction signal periodically changing in a parabolic form at vertical scanning intervals based on the level of an amplitude control signal and applies an amplitude controlled output signal to an adder. The adder adds the amplitude controlled correction signal to the output signal of a low-pass filter and applies the resulting signal to a retrace scanning control circuit and a trace scanning control circuit. The retrace scanning control circuit and the trace scanning control circuit apply a gate pulse to horizontal output FETs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.