Vehicular hands-free telephone system
First Claim
1. A vehicular hands-free telephone apparatus comprisinga microphone for converting an acoustic signal to an electrical signal,an FM transmitter for generating a frequency-modulated radio signal in response to the output of said microphone,a transmitting antenna for transmitting in a vehicle said radio signal generated from said FM transmitter,a solar battery for converting light energy to electrical energy and providing operation power to said FM transmitter, said solar battery being mounted on a windshield of said vehicle,a receiving antenna for receiving said radio signal transmitted from said transmitting antenna,a receiver for receiving and frequency-demodulating said radio signal received by said receiving antenna, anda transceiver for transmitting the output of receiver outside of said vehicle,wherein said microphone, transmitting antenna and FM transmitter are built in a sun visor of said vehicle.
1 Assignment
0 Petitions
Accused Products
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.
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Citations
14 Claims
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1. A vehicular hands-free telephone apparatus comprising
a microphone for converting an acoustic signal to an electrical signal, an FM transmitter for generating a frequency-modulated radio signal in response to the output of said microphone, a transmitting antenna for transmitting in a vehicle said radio signal generated from said FM transmitter, a solar battery for converting light energy to electrical energy and providing operation power to said FM transmitter, said solar battery being mounted on a windshield of said vehicle, a receiving antenna for receiving said radio signal transmitted from said transmitting antenna, a receiver for receiving and frequency-demodulating said radio signal received by said receiving antenna, and a transceiver for transmitting the output of receiver outside of said vehicle, wherein said microphone, transmitting antenna and FM transmitter are built in a sun visor of said vehicle.
Specification