Vertical deflection circuit
US5465032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Feb 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/696
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vertical deflection circuit includes a first pin which receives a forward scanning voltage having a first level and a first frequency. During a flyback period a second pin receives a flyback voltage having a second level higher that the first level and a second frequency higher than the first frequency. A third voltage source provides a first pulse. A switch means selectively couples the first pin and the third voltage source in response to a vertical blanking signal. The vertical blanking signal is differentiated to provide a differentiated signal and a voltage divider applies the differentiated signal to the switch to apply the first pulse to the first pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.