Scanning frequency synchronization method and apparatus
US4780892A · kind A · utility
20Cited by
4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1985 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Sep 9, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10527
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Using the inventive method and apparatus, two scanning sequences can be synchronized with small signal delays and at the smallest possible apparatus expense. The time differences between associated scanning values or signals of the two scanning sequences are compensated by alternatingly delaying relative to each other the scanned values or signals and interpolating between the scanned values or signals of one of the two scanning sequences. The apparatus for carrying out the synchronizing operation comprises a storage for producing the delays and a filtering device for performing the interpolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.