Antenna direction adjusting method and apparatus for satellite broadcasting receiving system
US5376941A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Apr 15, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/1257
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for adjusting the direction of an antenna on the basis of the C/N in a satellite broadcasting receiving system are disclosed. When the image quality is insufficient with the antenna direction in a displaying mode, a user specifies a fine adjustment mode through a key input portion. Then the current antenna direction is stored into a memory as a fine adjustment start position. A CPU deflects the antenna within a predetermined measuring range around the fine adjustment start position. The CPU detects one or more peaks of the C/N level and discriminates non-objective peaks. If the C/N level exhibits a plurality of peaks resulting from the signal reception, the CPU selects the antenna direction corresponding to the peak closest to the fine adjustment start position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.