System on chip method thereof, and device including the same
First Claim
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1. A Dynamic Voltage and Frequency Scaling (DVFS) method, comprising:
- scheduling execution of DVFS to adjust frequency or voltage of a target device at a first scheduled time;
monitoring operating frequency of the target device; and
deferring execution of DVFS at a second scheduled time, which occurs after the first scheduled time, when the operating frequency of the target device is below a minimum frequency and a central processing unit (CPU) is in an idle state.
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Abstract
A Dynamic Voltage and Frequency Scaling (DVFS) method, comprising of a scheduling execution of DVFS to adjust frequency or voltage of a target device at a first scheduled time; monitoring operating frequency of the target device; and selectively deferring execution of DVFS at a later scheduled time based on the operating frequency of the target device; wherein execution of DVFS at a next scheduled time is deferred when the operating frequency of the target device is below a given minimum frequency.
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Citations
20 Claims
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1. A Dynamic Voltage and Frequency Scaling (DVFS) method, comprising:
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scheduling execution of DVFS to adjust frequency or voltage of a target device at a first scheduled time; monitoring operating frequency of the target device; and deferring execution of DVFS at a second scheduled time, which occurs after the first scheduled time, when the operating frequency of the target device is below a minimum frequency and a central processing unit (CPU) is in an idle state. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system on chip (SOC), comprising:
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a central processing unit (CPU), a memory, and a target device controlled by the CPU, the memory having stored instructions executable by the CPU to; schedule dynamic voltage and frequency sealing (DVFS) to adjust frequency or voltage of the target device at a first scheduled time; receive operating frequency of the target device; and defer execution of DVFS at a second scheduled time, which occurs after the first scheduled time, when the operating frequency of the target device is below a minimum frequency and the CPU is in an idle state. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A wearable electronic device, comprising:
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a system on Chip (SOC), comprising; a central processing unit (CPU), a memory, and a memory interface controlled by the CPU, the memory having stored instructions executable by the CPU to; schedule dynamic voltage and frequency scaling (DVFS) to adjust frequency or voltage of a target device at a first scheduled time; receive operating frequency of the target device; and defer execution of DVFS at a second scheduled time, which occurs after the first scheduled time, when the operating frequency of the target device is below a minimum frequency and the CPU is in an idle state; a memory device connected to the memory interface; and a display. - View Dependent Claims (17, 18, 19, 20)
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Specification