Signal receiving apparatus and signal receiving system

Details Signal receiving apparatus and signal receiving system Signal receiving apparatus and signal receiving system

1997-02-20

2000-01-04

Peng, John K.

Television

Receiver circuitry

348 3, 348 10, 348 7, 348 11, 348 12, 348 13, 455 31, 455 32, 455 41, 455 42, 455 62, 455 63, 455 51, H04N 720, H04N 7167, H04N 7173

Patent

active

060115971

ABSTRACT:
The present invention relates to a signal receiving apparatus and a signal receiving system, including a receive antenna for receiving plural high-frequency signals; first frequency converters each for down-converting a frequency of each of the plural high-frequency signals; second frequency converters each for further frequency-converting the signals converted by means of the first frequency converters; a frequency control information storage section for storing frequency control information used to perform a frequency conversion by the plural second frequency converters; a frequency-conversion control section for automatically controlling the frequency conversion by said plural second frequency converters based on the frequency control information; and a receiver for receiving only a signal of a desired frequency among signals frequency-converted by plural second frequency converters. In the signal receiving apparatus used suitably as a receive-only station which receives high-frequency signals from a communications satellite, the object is to reduce significantly troubles in the setting and control for signal receiving operation, thus leading to miniaturization of the device or system and cost reduction thereof.

REFERENCES:
patent: 3909542 (1975-09-01), Wunluck et al.
patent: 4901147 (1990-02-01), Tajima
patent: 5345591 (1994-09-01), Tsurumaki et al.
patent: 5483662 (1996-01-01), Nonoyama et al.
patent: 5504934 (1996-04-01), Imai
patent: 5517685 (1996-05-01), Aoyama et al.
patent: 5600336 (1997-02-01), Kubo et al.
patent: 5752180 (1998-05-01), Guo et al.

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