Synchronization signal sharing circuit of digital VCR
US5623346A · kind A · utility
1Cited by
17References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1994 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Aug 9, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/641
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture in picture video signal processing circuit does not need an extra synchronization generator because sub picture video signals are synchronized with the main picture video signals by storing decoded sub picture video signals in a memory then reading the decoded sub picture video signals out in response to synchronization signals of the main picture video signal. Further, the memory can be of a lower capacity owing to the fact that the synchronization signals of the sub picture video signal are not stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.