Pulse or digital communications – Receivers – Automatic frequency control
Reexamination Certificate
2002-11-02
2008-10-28
Tran, Khai (Department: 2611)
Pulse or digital communications
Receivers
Automatic frequency control
C375S355000
Reexamination Certificate
active
07443935
ABSTRACT:
An apparatus for adjusting bandwidth for a receiver includes: (a) a receiver clock operating according to receiver clock parameters related to received signals for sampling received signals; (b) a local clock; (c) a tracker receiving an indicator related to the receiver clock parameter and generating a tracking parameter for comparing the receiver clock parameter and periodicity of the local clock; (d) a counter for counting events associated with the tracking parameter and generating an event count relating to the received signals; (e) a decision unit for reckoning the event count and generate a decision parameter relating to the reckoning; and (f) output logic coupled with the decision unit, the tracker and the receiver clock for evaluating the decision parameter and the tracking parameter by a logical routine for determining a need for changing operation of the receiver clock and for generating a change signal when the need exists.
REFERENCES:
patent: 4527278 (1985-07-01), Deconche et al.
patent: 5267273 (1993-11-01), Dartois et al.
patent: 2004/0071251 (2004-04-01), Sutioso et al.
Brady W. James
Stewart Alan K.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
Tran Khai
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