Locked-loop circuit
OwnerJohn Paul Lessoinventor
Life of this patent
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Abstract
A locked loop circuit, comprising: an input, for receiving an input signal; controllable modification circuitry for generating a signal; an output for the generated signal; a feedback loop for the generated signal; a comparator for comparing the input signal and a signal from the feedback loop, and for producing a comparison signal; circuitry for controlling the modification circuitry on the basis of the comparison signal; and dither circuitry, for adjusting the comparison signal by applying a dither value, where the dither value is non-zero at all times.
Claims28
A locked loop circuit, comprising:
- an input, for receiving an input signal;
- controllable modification circuitry, for generating a signal;
- an output for the generated signal;
- a feedback loop, for the generated signal;
- a comparator, for comparing the input signal and a signal from the feedback loop, and for producing a comparison signal;
- means for controlling the modification circuitry on the basis of the comparison signal;
- and
- dither circuitry, for adjusting the comparison signal by applying a dither value, wherein the dither value is non-zero at all times.
A method of applying dither in a locked-loop circuit, comprising:
- receiving an input signal;
- generating a signal with controllable modification circuitry;
- outputting the generated signal;
- feeding back the generated signal in a feedback loop;
- comparing the input signal and a signal from the feedback loop, and producing a comparison signal;
- controlling the modification circuitry on the basis of the comparison signal;
- and
- adjusting the comparison signal by applying a dither value, wherein the dither value is non-zero at all times.
Dependencies are inferred from the claim text.