Digital cordless telephone system readily capable of setting up

Details Digital cordless telephone system readily capable of setting up Digital cordless telephone system readily capable of setting up

1994-07-21

1995-12-05

Kuntz, Curtis

Telephonic communications

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

Including fiber optic link within telephone network

379 61, 370 77, H04Q 720, H04J 300

Patent

active

054736684

ABSTRACT:
In a digital cordless telephone system including master and slave radio stations that are operable in response to first and second frame synchronization signals synchronized with each other to produce first and second TDMA signals in the form of radio signals, respectively, a timing signal whch is produced on the basis of the first frame synchronization signal by the master radio station is transmitted to the slave radio station through a signal line to synchronize the slave radio station with the master radio station and is received by the slave radio station after lapse of a time delay determined by a length of the signal line. The timing signal is delayed in the master radio station by a single period of the first frame synchronization signal to produce the first TDMA signal synchronized with the delayed timing signal while the timing signal received with the time delay by the slave radio station is timed by the second frame synchronization signal to produce an output synchronization signal synchronized with the second frame synchronization signal and to obtain the second TDMA signal timed by the output synchronization signal. As a result, the first and the second TDMA signals are produced at an instant coincident with each other. The timing signal may be a TDMA frame synchronization signal.

REFERENCES:
patent: 5060266 (1991-10-01), Dent
patent: 5195091 (1993-03-01), Farwell et al.
patent: 5323446 (1994-07-01), Kojima et al.

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