Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1987-01-05
1989-10-10
Lev, Robert
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 63, 455 54, H04B 140
Patent
active
048737119
ABSTRACT:
A vehicle mounted mobile transceiver having a first and second frequency (11) communicates via a secondary mobile unit (51) with a short range portable unit (10). The portable unit (10) can be either a cordless microphone or a transceiver having a third and fourth frequency. The portable unit (10) allows a remotely positioned operator to transmit messages to a base station (13). To ensure security and reliable operation, the portable and vehicle mounted units use range burst signals and missed message signals to monitor receipt of data signals at the portable unit. The portable and secondary mobile unit communicate with one another via a first pair of frequencies and the vehicle mounted mobile transceiver and the base station communicate with one another via a second pair of different frequencies.
REFERENCES:
patent: 3955140 (1976-05-01), Stephens et al.
patent: 4056779 (1977-11-01), Toler
patent: 4056780 (1977-11-01), Faulkner
patent: 4539706 (1985-09-01), Mears et al.
patent: 4593273 (1986-06-01), Narcisse
patent: 4606073 (1986-08-01), Moore
patent: 4647722 (1987-03-01), Nishida et al.
patent: 4658435 (1987-04-01), Childress et al.
patent: 4661972 (1987-04-01), Kai
patent: 4673861 (1987-06-01), Dubovsky et al.
patent: 4701944 (1987-10-01), Howard et al.
Kobayashi et al., "Detachable Mobile Radio Units for the 860 MHz Land Mobile Radio System", IEEE 34th Vehicular Technology Conference, 5/84.
Theory/Maintenance Manual 68P1010C05-A for the Motorola PAC*RT Portable/Mobile Vehicular Repeater System.
Roberts Teddy P.
Rozanski, Jr. Walter J.
Lev Robert
Motorola Inc.
Parmelee Steven G.
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