Control for supplying power to car audio and phone systems

Details Control for supplying power to car audio and phone systems Control for supplying power to car audio and phone systems

1990-11-16

1993-08-31

Kuntz, Curtis

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 63, 379441, 455 88, H04M 1100

Patent

active

052415821

ABSTRACT:
A delay and inverting circuit, connected to the car phone system, is for delaying a status of operation of the car phone system and inverting a signal having a predetermined signal level according to the operation of the car phone system. A switching circuit, connected to the delay and inverting circuit, is for effecting a switching operation in accordance with a signal generated from the delay and inverting circuit. An amplifier, connected to the switching circuit and the car audio system, is for amplifying an output signal generated from the switching circuit and generating a driving signal to the car audio system.

REFERENCES:
patent: 3971985 (1976-07-01), Arai
patent: 4591661 (1986-05-01), Benedetto et al.
patent: 4873712 (1989-10-01), Porco
patent: 4993061 (1991-02-01), Hsieh

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