Vehicular hands-free telephone system

Details Vehicular hands-free telephone system Vehicular hands-free telephone system

1988-12-14

1990-02-27

Lev, Robert

Telephonic communications

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

Including fiber optic link within telephone network

455 90, 379428, H04Q 704

Patent

active

049052705

ABSTRACT:
A voice of user is picked up by a microphone built in a sun visor of a vehicle. The output of microphone is frequency-modulated by an FM transmitter powered by a solar battery and transmitted through a transmitting antenna in a vehicle. The frequency-modulated radio signal is received and demodulated by a receiver with a receiving antenna. The received signal is further transmitted outside of the vehicle through a transceiver.

REFERENCES:
patent: 3844840 (1974-10-01), Bender
patent: 4698838 (1987-10-01), Ishikawa et al.
patent: 4706273 (1987-11-01), Spear et al.
patent: 4715063 (1987-12-01), Haddad et al.

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