Oscillators – Automatic frequency stabilization using a phase or frequency... – With reference oscillator or source
Reexamination Certificate
2008-06-19
2010-12-07
Pascal, Robert (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
With reference oscillator or source
C331S00100A, C331S016000, C324S076520, C324S076770, C327S002000, C327S003000, C327S005000, C327S007000, C327S008000, C327S010000, C327S012000, C327S040000, C375S375000
Reexamination Certificate
active
07847641
ABSTRACT:
Disclosed are a digital phase-frequency detector and a method of operating a digital phase-frequency detector. The detector includes an input circuit, an output circuit and a reset circuit. In use, the input circuit receives first and second input signals during a plurality of cycles, and during a given one of the cycles, generates a first intermediate signal or a second intermediate signal depending on which of the first and second input signals was received first during that given one of said cycles. The output circuit receives these intermediate signals, and outputs, during said one cycle, a first output signal or a second output signal depending on which one of intermediate signals was received by the output circuit during said one cycle. The reset circuit applies a reset signal to the input circuit under defined conditions to begin a new one of said plurality of cycles.
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Rylyakov Alexander V.
Tierno José A.
Dougherty, Esq. Anne V.
Gannon Levi
International Business Machines - Corporation
Pascal Robert
Scully , Scott, Murphy & Presser, P.C.
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