Auto Power-Off Status Takeover Control for Electronic Devices
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Solution Overview
Problem
Existing electronic devices, such as digital cameras, often lose task status unintentionally due to auto power-off, and existing solutions do not provide appropriate control over whether to resume the previous task status when power is turned back on.
Innovation Solution
An electronic device with a power control unit that automatically switches to a low-power mode after a set period of inactivity, and a status control unit that determines whether to resume the previous operation status based on the duration of the auto power-off period, allowing users to choose whether to resume tasks upon power-on.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If auto power-OFF is executed to save power, then power consumption is reduced, but task status is lost
Solution Approach 1:
The patent applies dynamics by making the task status takeover behavior adjustable rather than fixed. The system dynamically changes its behavior based on the auto power-OFF period setting: when the period is short (equal to or shorter than a first period), task status is taken over; when the period is long (longer than the first period), task status is not taken over. This dynamic adaptation resolves the contradiction by allowing the system to optimize between power saving and task continuity based on user-defined parameters.
2Reliability
If task status is always taken over after auto power-OFF, then task continuity is maintained, but user intention may be violated
Solution Approach 1:
The patent uses parameter changes by introducing an adjustable auto power-OFF period parameter that determines system behavior. The setting unit allows users to configure different time periods, and the status control unit changes its operation based on this parameter: taking over task status for short periods and not taking over for long periods. This parameter-driven approach enables the system to adapt to different user intentions and usage scenarios.
3Loss of information
If auto power-OFF period is set short, then task status is preserved, but power saving effect is reduced
Solution Approach 1:
The system dynamically adjusts task status takeover behavior based on the configured auto power-OFF period. When users set a short period (equal to or shorter than the first period), the system takes over task status to preserve continuity. When users set a long period (longer than the first period), the system does not take over task status, accepting potential loss in exchange for better power saving. This dynamic behavior allows optimal balance between task preservation and power saving based on user needs.
Data Source
AI summary
A power control unit of an electronic device executes auto power-OFF that causes the electronic device to automatically switch from a first operation mode to a second operation mode. A setting unit sets a set period. In a case where the auto power-OFF is executed when a period equal to or shorter than a first period is set as the set period, a status control unit performs control so that a first operation status at the time of the execution of the auto power-OFF is taken over when the electronic device is placed in the first operation mode next. In a case where the auto power-OFF is executed when a period longer than the first period is set as the set period, the status control unit performs control so that the first operation status is not taken over.