Method and apparatus for noise quieting during resynchronization

Details Method and apparatus for noise quieting during resynchronization Method and apparatus for noise quieting during resynchronization

1992-12-23

1994-11-01

Kuntz, Curtis

Telephonic communications

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

Including fiber optic link within telephone network

379 63, 370 29, H04M 1100

Patent

active

053612949

ABSTRACT:
A method and apparatus eliminates an audible noise burst after reestablishment of an external timing signal in a radio base station (102). After a loss of the external timing signal, the base station (102) temporarily operates from an internal timing signal generator (226) to provide digital communications over a radio link (106) with a portable communication unit (120). After reestablishment of the external timing signal, the base station (102) detects (304) the presence of the signal, waits (306) for the signal to stabilize, and controls (312) the portable communication unit (120) to disable audio while switching (316) back to the external timing signal.

REFERENCES:
patent: 5103448 (1992-04-01), Barnes et al.
patent: 5228026 (1993-07-01), Albrow
patent: 5280541 (1994-01-01), Marko et al.
European Telecommunications Standards Institute, "CT2 Common Air Interface", Version 1.1, Document No. I-ETS 300 131:1990, 30th Jun., 1990, Valbonne Cedex, France.

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