Autodetermination of appropriate television signal standard in a television signal receiver
US6670997B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television signal receiver, especially a satellite receiver, operable to receive and process incoming television signals, automatically determines which television signal standard to utilize for its output based on a parameter of the electrical power supply or supplied electricity. Frequency and voltage of the electrical power are measurable parameters that may be used to determine whether the NTSC or PAL (PAL-M or PAL-N) television signal standard is more probable as the local preference and automatically causes the television receiver to code received television signals in that format for output. The present invention utilizes the principle that the local television standard coincides in some manner with the local power line frequency and voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.