Phase-locked loop circuit

Details Phase-locked loop circuit Phase-locked loop circuit

H - Electricity

03

L

328/28, 331/35,

H03L 7/06 (2006.01)

Patent

CA 1132703

ABSTRACT OF THE DISCLOSURE A phase-locked loop circuit includes a voltage con- trolled oscillator responsive to a control voltage for generating a periodic output signal comprised of pulses occurring at a first frequency determined by the value of said control voltage. First means responds to the output signal for generating a periodic feedback signal comprised of pulses occurring at a second frequency which bears a predetermined relationship toward the first frequency. Second means, which is responsive to the feedback signal and to a first input signal having a first periodic interval during which pulses at a third frequency occur and a second periodic interval during which said pulses at the third frequency do not occur, generates an output signal comprised of the pulses of the first input signal during the first periodic interval of the input signal and the pulses of the feedback signal during the second periodic interval of the first input signal. Third means responds to the feedback signal from the first means and the output signal from the second means for generating the control voltage having a value dependent upon the phase differential between the feedback signal and the output signal from the second means.

306160

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