Mobile Terminal Sensor Power Management via Dynamic State Switching
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Solution Overview
Problem
Mobile communication terminals with multiple external sensors, such as touch panels, acceleration sensors, and photosensors, face challenges in managing power consumption efficiently, leading to rapid battery drain due to the need for continuous power supply to these sensors during various operational states.
Innovation Solution
A mobile communication terminal that employs a controller to dynamically manage the power state of external sensors like touch panels and acceleration sensors, switching them between active and standby modes based on specific conditions such as phone call status, application compatibility, and user interactions, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple external sensors are continuously operated to ensure functionality, then the reliability and responsiveness of the mobile terminal are improved, but the battery power consumption increases rapidly
Solution Approach 1:
The patent applies dynamics by making the sensor operational state adjustable rather than fixed. The controller dynamically switches sensors between active and standby states based on terminal usage conditions, enabling the system to adapt its power consumption characteristics to match actual operational needs while maintaining reliability when required
Solution Approach 2:
The patent implements periodic action by alternating sensor operation between active and standby states based on predetermined conditions. Instead of continuous operation, sensors are activated only during specific periods when needed (e.g., during phone calls or specific applications) and placed in standby during other periods, reducing overall power consumption while maintaining functionality
2Duration of action of moving object
If external sensors are placed in standby state to conserve power, then battery life is extended, but the response time and operational readiness of the terminal deteriorates
Solution Approach 1:
The patent applies preliminary action by proactively switching sensors to standby state when conditions indicate they will not be immediately needed, while simultaneously maintaining the capability to quickly reactivate them. This advance preparation extends battery life without significantly compromising response time, as the standby state is designed for rapid transition back to active operation when triggered by relevant events
Data Source
AI summary
A mobile phone apparatus 10 includes a touch panel controlling IC 30. The touch panel controlling IC 30 controls electric power supplied from the electric power IC 14 on the basis of a received active signal or standby signal to set a touch panel input apparatus 32 to an active state or a standby state on the basis of the received active signal or standby signal. A processor 12 transmits to the touch panel controlling IC 30 the active signal or the standby signal in correspondence with a determined state of the mobile phone apparatus 10.