Picture-in-picture color television receiver
US4665438A · kind A · utility
68Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jan 3, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/641
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color television receiver, having a tuner and associated demodulation circuits for both a main picture signal and a picture-in-picture (PIP) signal, uses a single memory for synchronization and for storing a single subsampled field of the PIP signal. Appropriate circuitry is included to selectively adjust the output of the memory to prevent the possible disorder of lines of the resultant PIP signal on display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.