Picture display device including a line synchronizing circuit and a line deflection circuit
US4871951A · kind A · utility
6Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Oct 5, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/27
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture display device, having a line synchronizing circuit and a line deflection circuit, suitable for several line frequencies. Use is made of a modulator for modulating the line deflection current, a control stage being coupled to this modulator for applying a correction signal for correcting, in dependence on the frequency of a line oscillator in the line synchronizing circuit, the S-distortion or the linearity error, respectively, or to keep the amplitude of the line deflection current constant upon a change in the line frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.