Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna orientation
Patent
1993-04-15
1994-12-27
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including antenna orientation
342 75, H01Q 300, G01S 1300
Patent
active
053769414
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.
REFERENCES:
patent: 4796032 (1989-01-01), Sakurai et al.
patent: 4801940 (1989-01-01), Ma et al.
patent: 4935814 (1990-06-01), Omoto et al.
Fukazawa Takekazu
Noda Masataka
Issing Gregory C.
Uniden Corporation
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