Method and apparatus for generating a clock signal and for controlling a clock frequency using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsChi-ho Cha, Hoon-sang Jin
Life of this patent
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Abstract
A method and a device for generating a clock signal determine a number of pulses to be discarded from each predetermined cycle of a reference clock signal in order to obtain, on average, a target frequency. A masking pattern is created for discarding the number of pulses to be discarded from each predetermined cycle of the reference clock signal. The clock signal, which includes the target frequency, is generated by discarding the number of pulses from the reference clock signal using the masking pattern.
Claims8
A method of controlling a clock frequency, the method comprising:
- generating a clock signal for an application having, on average, a target frequency from a reference clock signal;
- calculating a data processing progress percentage of processing data using the clock signal;
- determining a difference between the calculated data processing progress percentage and a target progress percentage;
- and
- changing the target frequency of the clock signal based on the determined difference.
A device for controlling a clock frequency, the device comprising:
- a clock signal generating circuit configured to generate a clock signal for an application, the clock signal having a target frequency from a reference clock signal;
- an application circuit configured to process data using the clock signal for the application;
- and
- a microprocessor configured by software to provide instructions for calculating a data processing progress percentage of the application circuit and for controlling the clock signal generating circuit to change the target frequency based on a difference between the calculated data processing progress percentage and a target progress percentage.
Dependencies are inferred from the claim text.