Satellite broadcast receiver

Details Satellite broadcast receiver Satellite broadcast receiver

1991-10-31

1994-04-19

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 2, 380 9, 380 10, 380 49, 455 32, 348725, H04L 900

Patent

active

053053826

ABSTRACT:
A satellite broadcast receiver comprise a demodulator for demodulating received signals, a mode changer for changing the voice output mode, and a control that prevents a voice output mode changing operation in response to a voice output mode changing signal provided by the mode changer, when the demodulator detects that the video signal and aural signal of the received signal are scrambled. When the video signal and aural signal of the received signal are scrambled, an indication of the voice output mode is suppressed and a special indication of the prevention of the change of voice output mode is displayed.

REFERENCES:
patent: 3781472 (1973-12-01), Goode et al.
patent: 4368357 (1983-01-01), Gurak
patent: 4635223 (1987-01-01), Boone et al.
patent: 5077791 (1991-12-01), Salihi

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