Picture-in-picture television receiver with separate channel display
US4746983A · kind A · utility
91Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Dec 19, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture-in-picture type television receiver in which a sub-picture screen is inset within a main picture screen to allow the same or different pictures to be simultaneously displayed and which includes a circuit for separately displaying the channel numbers of both the main and sub-picture screens momentarily whenever the picture content of the sub-picture screen is changed and whenever the picture content of the main picture is changed if the sub-picture is display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.