System clock synchronization using phase-locked loop

Details System clock synchronization using phase-locked loop System clock synchronization using phase-locked loop

2005-06-28

2005-06-28

Ha, Dac V. (Department: 2634)

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

C375S376000, C327S159000, C327S160000, C370S510000, C370S512000

Reexamination Certificate

active

06912260

ABSTRACT:
An apparatus for synchronizing the system clocks of wireless devices in a digital communications system is presented. A digital phase-locked loop is employed. The phase-locked loop may include a counter which is incremented by a local device system clock and latched by a frame synchronization marker received from a remote device, whereby the counter output comprises a feed forward signal. The phase-locked loop may alternatively include a counter that reflects the level of data stored in receive and/or transmit FIFO buffers. The loop output signal controls the frequency of the system clock oscillator.

REFERENCES:
patent: 4706263 (1987-11-01), von der Embse
patent: 4759041 (1988-07-01), Anderson et al.
patent: 4941156 (1990-07-01), Stern et al.
patent: 5007070 (1991-04-01), Chao et al.
patent: 5274681 (1993-12-01), Yamada et al.
patent: 6574225 (2003-06-01), Reynolds et al.
patent: 6574288 (2003-06-01), Welland et al.
patent: 195 37 361 (1997-04-01), None
patent: 0622918 (1994-11-01), None
patent: 2 315 197 (1998-01-01), None
patent: 2179045 (1990-07-01), None
patent: 09-298463 (1997-11-01), None
patent: 10093540 (1998-04-01), None
patent: 10-178458 (1998-06-01), None
patent: 110112982 (1999-04-01), None
patent: 200-216760 (2000-08-01), None
patent: WO 95/33320 (1995-12-01), None
patent: WO 98/04063 (1998-01-01), None

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