Telecommunications – Receiver or analog modulated signal frequency converter – Squelch
Patent
1981-09-14
1984-03-06
Bookbinder, Marc E.
Telecommunications
Receiver or analog modulated signal frequency converter
Squelch
455343, 455352, H04B 110, H04B 116
Patent
active
044358440
ABSTRACT:
A remote unit can be controlled by sensing the change of impedance in the power line of a control unit as the control unit is turned on. The power line circuit includes a portion of an oscillator which is damped by the turn-on. Functions such as power turn-on and temporary audio muting are possible with minimal voltage drop in the power line.
REFERENCES:
patent: 3453547 (1969-07-01), Rigsbee et al.
Forshay Steven E.
Meyerhoff Jerome D.
Bookbinder Marc E.
Gillman James W.
Motorola Inc.
Parker Margaret Marsh
Pristelski James S.
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