Electronic switch for TV signal booster
US7640572B2 · kind B2 · utility
1Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jul 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of automatically disabling a low noise amplifier (LNA) that serves to boost weak video signals in a TV tuner, when the television receives a cable TV service. The method involves storing the total number of preset programs assigned during an initial auto-tune setup operation. If the total count exceeds a predetermined threshold, this indicates cable TV service whose signals will not require boosting. The LNA is then disabled to avoid interference between programs on neighboring channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.