Mute and automatic restore device for communications receivers

Details Mute and automatic restore device for communications receivers Mute and automatic restore device for communications receivers

1992-04-23

1993-06-15

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455218, 455352, H04B 116

Patent

active

052206858

ABSTRACT:
The mute and automatic restore device is an apparatus for communication receivers and the like, whereby voice or code conversations or messages emanating from the monitoring speaker can be muted by the push of a button and the apparatus will determine the end of the conversation or message by sensing a preset time delay, and will then automatically restore audio output, or provide for the output to be manually restored by the pushing of a second button. The apparatus can be built into a receiver, provided as a kit to be spliced into the receiver speaker wires, or built as an accessory with a speaker and case that can simply be plugged into the speaker jack of a receiver.

REFERENCES:
patent: 3870956 (1975-03-01), Wolff
patent: 4627102 (1986-12-01), Nott
Radio Electronics, "Commercial Killer Improves Programs", Jun. 1950, p. 44.

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