Picture-in-picture television receiver control
US4959719A · kind A · utility
127Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1988 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Dec 21, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4858
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television system with picture-in-picture capability in which a common control element can be used to control both the main picture and the picture-in-picture on the screen together with an indicating means displayable on the screens indicate which picture the common control element is capable of controlling at any time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.