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US 12,712,537 B2Granted
Frequency control circuit and frequency control method
AssigneeLx Semicon Co., Ltd.
InventorsKyu Ho Kim, Jin Ho Choi
Life of this patent
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Abstract
Disclosed in an embodiment is a frequency control circuit. The frequency control circuit is able to compare a preset target frequency value with an output frequency value of an output signal and control the frequency of the output signal according to a comparison result.
Claims17
A frequency control circuit comprising:
- an output signal generation circuit configured to generate an output signal having a frequency according to a control signal;
- and
- a frequency correction circuit configured to;
- receive a preset target frequency value;
- generate a frequency detection signal corresponding to a cycle of the output signal;
- generate an output frequency value corresponding to the number of clocks of a reference clock signal included in one cycle of the output signal using the frequency detection signal;
- compare the preset target frequency value with the output frequency value;
- and
- generate the control signal for controlling a frequency of the output signal according to a comparison result.
6 more elements
A method of controlling a frequency comprising:
- receiving a preset target frequency value;
- generating a frequency detection signal corresponding to a cycle of an output signal;
- generating an output frequency value corresponding to the number of clocks of a reference clock signal included in one cycle of the output signal using the frequency detection signal;
- comparing the preset target frequency value with the output frequency value;
- generating a control signal for controlling a frequency of the output signal according to a comparison result;
- and
- generating the output signal having a frequency controlled according to the control signal.
4 more elements
Dependencies are inferred from the claim text.