Telecommunications – Receiver or analog modulated signal frequency converter – Responsive to an input signal of particular predetermined...
Patent
1994-09-28
1996-04-30
Safourek, Benedict V.
Telecommunications
Receiver or analog modulated signal frequency converter
Responsive to an input signal of particular predetermined...
455343, H04B 116
Patent
active
055133851
ABSTRACT:
A radio receiver continues to demodulate a broadcast signal that was modulated with a baseband signal and a data signal to obtain the data signal after the receiver circuitry unassociated with extracting the data signal has been deenergized when the receiver is set in a predetermined mode. As described, the baseband signal has a program content, while the data signal identifies the program content of the baseband signal. In accordance with the present invention, the unassociated receiver circuitry is reenergized to output an amplified baseband signal capable of driving a speaker when the program content of the data signal indicates that a preselected program is starting, and again deenergizes the unassociated receiver circuitry when the program content of the data signal indicates that the preselected program is over.
REFERENCES:
patent: 4435843 (1984-03-01), Eilers et al.
patent: 4450589 (1984-05-01), Eilers et al.
patent: 5060300 (1991-10-01), Luber et al.
patent: 5276909 (1994-01-01), Milner et al.
patent: 5394562 (1995-02-01), Spelter et al.
Safourek Benedict V.
Sony Corporation
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