Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular frequency control means
Reexamination Certificate
2007-12-18
2007-12-18
Pascal, Robert (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Particular frequency control means
C331S057000, C331S074000
Reexamination Certificate
active
11240830
ABSTRACT:
An oscillation frequency control circuit comprises a frequency counter that counts to measure a frequency of an oscillating signal outputted from an oscillation circuit which produces the oscillating signal of the frequency corresponding to analog control voltages inputted, a plurality of D/A converters that produce the analog control voltages respectively corresponding to digital values inputted, a digital value generator that generates the digital values according to control signals inputted, and an operation circuit that compares the frequency measured by the frequency counter with a reference frequency and produces the control signals, which are inputted to the digital value generator, corresponding to the comparing result.
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Taiwan Intellectual Property Office, Examination Opinion Notification (English Translation) Taiwan counterpart application to U.S. Appl. No. 11/240,830, undated.
Goodley James
Gunther John E.
Pascal Robert
Sanyo Electric Col, Ltd.
Sereboff Steven C.
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