Dynamic Voltage Frequency Control for Power Optimization
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Solution Overview
Problem
Existing electronic devices, such as mobile terminals, face challenges in reducing power consumption despite techniques that adjust clock frequency and supply voltage, as there is still room for improvement in optimizing these parameters for efficient operation.
Innovation Solution
An electronic circuit and device with a control processing section that outputs real-time active information for load and processing time, a voltage/frequency setting section that adjusts power supply voltage and clock frequency accordingly, and controllers to manage these settings, allowing for variable power supply and clock frequency across different circuit blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed clock and high supply voltage are supplied to circuit sections, then processing speed and performance are improved, but power consumption increases
Solution Approach 1:
The patent dynamically changes the operating parameters (clock frequency and supply voltage) of circuit sections based on real-time active information from control processing. When high-speed processing is needed, high clock frequency and high voltage are supplied; when low-speed processing suffices, low clock frequency and low voltage are supplied, thus resolving the contradiction between processing speed and power consumption.
Solution Approach 2:
The patent makes the clock frequency and supply voltage dynamic rather than fixed. The clock controller and voltage controller continuously adjust these parameters based on feedback from the control processing section, allowing the system to adapt its performance and power consumption to actual processing needs in real-time.
2Use of energy by moving object
If variable clock frequency and voltage are supplied to different circuit blocks, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent combines the clock controller and voltage controller into an integrated control system that receives active information from the control processing section and coordinates adjustments of both clock frequency and supply voltage together. This merging approach manages the complexity by providing unified control rather than separate independent control mechanisms.
Solution Approach 2:
The control processing section automatically generates active information about its own processing state and load, which feeds back to the voltage/frequency setting section. This self-service mechanism allows the system to autonomously adjust its own power consumption without requiring external complex control infrastructure.
Data Source
AI summary
An electronic circuit according to the present invention has one or more circuit sections which operate according to a variable power supply voltage and a variable clock frequency. In the electronic circuit, active information related to load and/or processing time which changes in real time from a control processing section included in the circuit section is output and, based on the active information, a voltage/frequency setting section which sets values of a power supply voltage and clock frequency is provided. The electronic circuit further includes a voltage controller which controls the power supply voltage to be supplied to the circuit section based on the voltage value set by the voltage/frequency setting section and a clock frequency controller which controls the clock frequency to be supplied to the circuit section based on the frequency value set by the voltage/frequency setting section.