Picture quality indicator for satellite broadcasting receiver

Details Picture quality indicator for satellite broadcasting receiver Picture quality indicator for satellite broadcasting receiver

1988-12-28

1990-06-19

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

3581921, 358188, H04N 550

Patent

active

049358146

ABSTRACT:
By the extraction of the noise component from the FM demodulated output and the detection thereof, the output proportional to the noise power is obtained, and it is indicated as the CN ratio of the received signal. This quality indication of the received signal makes the antenna pointing angle adjustment easier than before, and also realizes the picture quality indication for a satellite broadcasting receiver.

REFERENCES:
patent: 4125809 (1978-11-01), Mott
patent: 4214273 (1980-07-01), Brown
patent: 4281348 (1981-07-01), Shizuya
patent: 4349840 (1982-09-01), Henderson
patent: 4605968 (1986-08-01), Hayashi
patent: 4658438 (1987-04-01), Kamata et al.
patent: 4721997 (1988-01-01), Wittrock
patent: 4723303 (1988-02-01), Koch
"World Broadcasting--Satellite Administrative Radio Conference", Geneva 1977, pp. 93-97 and cover sheets.
Satellite Broadcasting Receiver Part 1 Specification of Target, Dempa-Gijitu Kyoukai, Jun. 1983.

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