Pulse or digital communications – Receivers – Automatic frequency control
Reexamination Certificate
2011-07-26
2011-07-26
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
Automatic frequency control
C375S316000, C375S324000, C375S340000, C375S346000, C375S362000, C375S373000, C455S075000, C455S076000, C455S118000, C455S260000, C455S313000, C455S317000, C455S318000, C455S323000
Reexamination Certificate
active
07986754
ABSTRACT:
An apparatus including a first circuit, a second circuit, a third circuit, and a fourth circuit. The first circuit may be configured to generate a demodulated signal in response to a modulated signal and a seed value selected in response to a first control signal. The second circuit may be configured to generate a second control signal in response to the demodulated signal. The third circuit may be configured to generate the first control signal in response to the second control signal, a compensation signal, and the first control signal, where generation of the first control signal includes adding the second control signal, the compensation signal, and a latched version of the first control signal. Generation of the latched version of the first control signal may include sampling the first control signal in response to a clock signal. The compensation signal may compensate for variation in the clock signal.
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Fan Chieh M
LSI Corporation
Maiorana PC Christopher P.
Vlahos Sophia
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