Multi-system television receiver
US4688082A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | May 16, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-system television receiver capable of receiving television signals of system, NTSC system and SECAM system with a plurality of different subcarrier wave frequencies, includes a frequency detecting circuit for detecting the frequency of a subcarrier wave of the television signal and producing frequency data representing the detected frequency, a system detecting circuit for detecting the system of the television signal and producing system data representing the detected system, a channel change detecting circuit for detecting a channel change, a holding circuit for holding the frequency data and the system data upon changing of the channel detected by the detecting circuit, and television circuits which are set in a condition in compliance with the broadcast system of the received television signal as determined by the frequency data and the system data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.