User-State Power Control for Multi-Device Battery Runtime

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Solution Overview

Problem

Existing mobile terminals, such as those described in PTL 1, do not achieve sufficient power saving effects through display-off or display brightness reduction, resulting in inadequate extension of battery driving time.

Innovation Solution

An electronic apparatus that includes a battery, a sensor to detect user interaction, and a control unit that selects devices allowed to be reduced in power consumption based on the use state and performs control to reduce their power consumption when the battery is connected to a power source.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If display-off or display brightness reduction is implemented, then power consumption is reduced, but battery driving time extension is insufficient

Engineering Contradiction:

Improvepower consumptionVSAvoidbattery driving time

Core Design Contradiction:

Use of energy by moving objectVSDuration of action of moving object

Solution Approach 1:

The system segments power management by device type, applying different power saving strategies to different devices (display, camera, sensor, audio) based on their individual characteristics and usage patterns, rather than treating all devices uniformly

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The control unit dynamically adjusts power consumption levels of individual devices based on real-time detection of use states, transitioning devices between active, standby, and power-off modes as needed to optimize overall power savings while maintaining usability

Inventive Principle:

Principle #15Dynamics

2Duration of action of moving object

If power consumption of multiple devices is reduced, then battery driving time is extended, but device functionality may be compromised

Engineering Contradiction:

Improvebattery driving timeVSAvoiddevice functionality

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The system automatically detects use states and autonomously controls device power levels without requiring manual user intervention, making power management decisions based on detected usage patterns while preserving user convenience

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The control unit changes operational parameters of devices (power consumption levels, operational modes) based on detected use states, adjusting each device's parameters independently to optimize power savings while maintaining necessary functionality

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250138617A1Electronic apparatus

Publication Date: 2025.05.01 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

An electronic apparatus of the present disclosure is an electronic apparatus including: a plurality of devices; a battery that supplies driving power to the plurality of devices; a sensor that detects a use state of the electronic apparatus used by a user; and a control unit that controls the plurality of devices, the battery, and the sensor, in which when the battery is connected to a power source, the control unit selects a device allowed to be reduced in power consumption among the plurality of devices based on the use state, and performs control for reducing the power consumption of the device selected.