Mobile radio communications device having a PLL that phase...

Details Mobile radio communications device having a PLL that phase... Mobile radio communications device having a PLL that phase...

2005-03-22

2005-03-22

Pascal, Robert (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

C331S046000, C331S047000

Reexamination Certificate

active

06870428

ABSTRACT:
A mobile radio communications device has a first crystal oscillator for providing a first master clock frequency for the timebase of a first communications system, a second crystal oscillator for providing a second master clock frequency for the timebase of a second communications system, and a phase locked loop connected between the first and second crystal oscillators and arranged to lock the first and second crystal oscillators together so that the two timebases cannot drift.

REFERENCES:
patent: 5329251 (1994-07-01), Llewellyn
patent: 5442460 (1995-08-01), Rhodes
patent: 6215835 (2001-04-01), Kyles
patent: 6404288 (2002-06-01), Bletz et al.
patent: 6462705 (2002-10-01), McEwan
patent: 0098571 (1984-01-01), None
patent: 4-192791 (1992-07-01), None
Search Report, GB0208489-5, Ruth Atkinson, Oct. 31, 2002.

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