Radio telephone systems and method for use in vehicles

Details Radio telephone systems and method for use in vehicles Radio telephone systems and method for use in vehicles

1983-05-03

1984-06-26

Ng, Jin F.

Telecommunications

Transmitter and receiver at separate stations

455 54, 455 79, 179 2EB, H04B 100

Patent

active

044570180

ABSTRACT:
A vehicle radio telephone system is constructed to talk between a vehicle and a fixed station through any one of a plurality of radio channels. Upon degradation of a talking condition during talking, the radio channel is switched and a tone is sent to talkers to inform them that the radio channel is now being changed.

REFERENCES:
patent: 3555424 (1971-01-01), Malm
patent: 3581013 (1971-05-01), Muller
patent: 3707679 (1972-12-01), Bruley et al.
patent: 4025853 (1977-05-01), Addeo
patent: 4103105 (1978-07-01), Akiyama et al.
patent: 4144409 (1979-03-01), Utano et al.
patent: 4144412 (1979-03-01), Ito et al.
patent: 4281413 (1981-07-01), Forrest
patent: 4308429 (1981-12-01), Kai et al.
Sakamoto et al., "Mobile Unit for 800 MHz Band Land Mobile Telephone System", Review of the Electrical Communication Laboratories, vol. 25, Nos. 11-12, pp. 1231-1244, Nov.-Dec. 1977.
Nagatsu et al., "Base Station Radio Equipment for 800 MHz Band Land Mobile Telephone System", Review of the Electrical Communication Laboratories, vol. 25, Nos. 11-12, pp. 1145-1154, Nov.-Dec. 1977.
Kamata et al., "800 MHz Band Land Mobile Telephone Radio System", Review of the Electrical Communication Laboratories, vol. 25, Nos. 11-12, pp. 1157-1171, Nov.-Dec. 1977.
Yoshikawa et al., "800 MHz Band Land Mobile Telephone Control System", Review of the Electrical Communication Laboratories, vol. 25, Nos. 11-12, pp. 1172-1190, Nov.-Dec. 1977.

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