Communication Device Power Management for Call Reception
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Solution Overview
Problem
Communication devices with power management functions, as required by the EuP Lot 6 standard, automatically power off after a certain period of inactivity, leading to inability to receive calls without user intervention to disable this feature.
Innovation Solution
A communication device with a power controller and determination unit that maintains power supply to the communication unit if settings for data exchange are detected, preventing automatic power-off and ensuring call receptivity without user operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If automatic power-off function is enabled to save energy, then energy consumption is reduced, but the device becomes unable to receive calls
Solution Approach 1:
The determination unit automatically detects whether data exchange settings are made and notifies the power controller, which then automatically adjusts power supply accordingly. This self-service mechanism eliminates the need for user intervention to prevent automatic power-off when communication functions are needed.
2Reliability
If user manually disables automatic power-off to maintain call reception capability, then call reception is ensured, but operation complexity increases
Solution Approach 1:
The system automatically detects communication settings and manages power supply without requiring user intervention. The determination unit checks for data exchange settings and notifies the power controller, which maintains appropriate power levels automatically.
Solution Approach 2:
The determination unit provides feedback to the power controller about the communication settings status. This feedback mechanism enables the power controller to automatically adjust power supply based on whether data exchange settings are made, ensuring call reception capability is maintained when needed.
3Reliability
If power is continuously supplied to communication unit to ensure call reception, then call reception capability is maintained, but energy consumption increases
Solution Approach 1:
The power supply to the communication unit is dynamically adjusted based on the detection results. When data exchange settings are detected, power is maintained at call-receivable level; when no such settings are detected, automatic power-off can proceed to save energy.
Solution Approach 2:
The power controller changes the power supply parameter based on the determination unit's detection. Power is maintained at a higher level when communication functions are needed and can be reduced or cut off when not needed, optimizing energy consumption while ensuring call reception capability when required.
Data Source
AI summary
A communication device includes a communication unit configured to send and receive data via an attachable and detachable line, a power controller configured to reduce a power supply to the communication unit when a certain condition is satisfied, and a determination unit configured to determine whether or not a setting for sending and receiving data via the line by the communication unit is made. The power controller maintains the power supply to the communication unit at a call-receivable level, if it is determined that the setting for using the line is made.