Transmitter and automobile audio apparatus using the same

Details Transmitter and automobile audio apparatus using the same Transmitter and automobile audio apparatus using the same

1998-10-07

1999-10-19

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at separate stations

Frequency or phase modulation

455 66, 455 63, 455 99, 455345, 381 14, 381 79, H04J 500

Patent

active

059703903

ABSTRACT:
A transmitter for transmitting an audio signal derived from an audio appliance to an FM (frequency modulation) radio includes a transmitter circuit for converting the audio signal derived from an audio appliance into an FM signal within an FM broadcasting band to thereby transmit the FM signal, a receiver circuit having at least a tuner unit; a display for displaying thereon a frequency; and a control circuit for controlling a transmission frequency of the transmitter circuit and a reception frequency of the receiver circuit. The control circuit causes the receiver circuit to detect an unused frequency within the FM broadcasting band and to set a frequency corresponding to the detected unused frequency to the transmission frequency, and also causes the display to display thereon the set transmission frequency.

REFERENCES:
patent: 4712250 (1987-12-01), Michels
patent: 4864550 (1989-09-01), Kawanaka
patent: 5093924 (1992-03-01), Toshiyuki et al.
patent: 5093928 (1992-03-01), Kage
patent: 5319716 (1994-06-01), McGreevy
patent: 5628056 (1997-05-01), Grysiewicz
patent: 5768345 (1998-06-01), Takebe et al.
patent: 5774805 (1998-06-01), Zicker
patent: 5826198 (1998-10-01), Bergins et al.
patent: 5842119 (1998-11-01), Emerson et al.

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