Digital television broadcast signal receiver
US7716706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Feb 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/42638
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-directional antenna connected with a digital television broadcast signal receiver is arranged not to move one full turn instantaneously in response to an abrupt drop down in the intensity of a received signal thus to avoid any downward overshooting of the intensity of the received signal and eliminate any useless direction searching time while remains favorably controlled to face in the direction where the intensity of the received signal is at optimum. More specifically, the maximum of the intensity of a received signal at each channel is measured and the threshold is set to a level lower than the maximum. When the intensity of a received signal has dropped down from the threshold, the antenna remains not turned within a predetermined period of marginal time. The antenna is moved one full turn only when the intensity drops down from the threshold and stays continuously over the predetermined period of marginal time. Then, the maximum of the intensity of the received signal is modified and stored for future use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.