Hidden Function Key Power Control via ADC Integration Timing

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Solution Overview

Problem

Existing electronic devices with hidden function keys face challenges in balancing response speed and power consumption, as reducing sensor scanning frequency to conserve power also affects response speed.

Innovation Solution

The method involves adjusting the integration time of the ADC sampling circuit based on the current state of the electronic device, which in turn adjusts the power-on time of the hidden function key, thereby controlling actual power consumption without altering the sensor scanning frequency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the sensor scanning frequency is reduced to lower power consumption, then power consumption is reduced, but response speed deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidresponse speed

Core Design Contradiction:

Use of energy by moving objectVSSpeed

Solution Approach 1:

The patent applies dynamics by making the ADC sampling circuit's working state adjustable based on device state. The integration time is dynamically modified according to whether the device is in a working state or idle state, allowing the system to adapt its power consumption and response characteristics to current operational requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the integration time parameter of the ADC sampling circuit to control power consumption. By adjusting this parameter based on device state (working vs. idle), the system achieves different power consumption levels while maintaining appropriate response speeds for each state.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If the integration time of ADC sampling circuit is increased to improve sampling accuracy, then sampling accuracy is improved, but power consumption increases

Engineering Contradiction:

Improvesampling accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The integration time is dynamically adjusted based on device state. During idle state, a longer integration time can be used for higher sampling accuracy when power consumption is less critical. During working state, the integration time is reduced to lower power consumption while maintaining sufficient accuracy for operational requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The ADC sampling circuit operates periodically with different integration times depending on the device state. The system switches between different sampling configurations (different integration times) based on whether the device is in working or idle state, achieving periodic adaptation of power consumption and accuracy characteristics.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentEP4053676B1Power consumption control method for electronic device, and electronic device and storage medium

Publication Date: 2025.01.22 VIVO MOBILE COMM CO LTD

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AI summary

Embodiments of this application provide a power consumption control method for an electronic device, an electronic device, and a storage medium, and the method includes: obtaining a current state of the electronic device; determining a target integration time of an ADC sampling circuit based on the obtained current state; and adjusting an integration time of the ADC sampling circuit to the target integration time, and adjusting a power-on time of a hidden function key based on the adjusted integration time to control actual power consumption of the electronic device, wherein the integration time is positively correlated with the power-on time.