Stabilizing arrangement for on-screen display
US4677484A · kind A · utility
16Cited by
20References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | May 10, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/485
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television receiver includes apparatus for stabilizing an on-screen character display by which the deflection signal source is controlled for operating in a free-running mode, substantially unaffected by signal variations on the sync input line, rather than in a synchronized mode when sync is unreliable or otherwise undesirable. As another feature, the deflection signal source is caused to operate at substantially the same frequency in either mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.