Power Saving Control for Time Setting Interruptions
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Solution Overview
Problem
Conventional electronic devices with power saving functions, such as auto power off, may inadvertently turn off during time setting operations, causing users to lose their settings and requiring re-entry, especially when the power saving time is set too short.
Innovation Solution
The electronic device extends the time before power saving functions activate when the time setting screen is displayed, ensuring that the device remains on long enough for users to complete time setting operations without interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the power saving function is activated with a short non-operating period, then power consumption is reduced, but the device may turn off during time setting operations causing loss of user input
Solution Approach 1:
The patent dynamically adjusts the non-operating period threshold based on the current operational state. When a time setting screen is detected, the system extends the non-operating period from a default short duration to a longer duration, allowing users to complete time setting operations without unintended power-off. This dynamic adaptation resolves the contradiction by making the power saving behavior context-aware.
Solution Approach 2:
The system changes the parameter of non-operating period duration based on the displayed screen type. Specifically, when a time setting screen is active, the non-operating period is extended to a longer value, while for other screens the original shorter threshold applies. This parameter change ensures that power saving is optimized for normal operation while preventing interruptions during critical time-setting tasks.
2Reliability
If the non-operating period is extended to prevent power-off during time setting, then time setting operation completeness is maintained, but power consumption increases
Solution Approach 1:
The patent applies different non-operating period thresholds to different operational contexts. Instead of using a single extended threshold for all operations, the system applies the extended threshold specifically when a time setting screen is detected, while maintaining the original shorter threshold for all other operational states. This localized application of the extended period minimizes the impact on overall power consumption while ensuring reliability during time setting operations.
Solution Approach 2:
The system dynamically switches between two non-operating period values based on the current screen state. The control unit monitors whether a time setting screen is displayed and adjusts the non-operating period accordingly - using a longer period during time setting and a shorter period otherwise. This dynamic adjustment resolves the contradiction by applying the extended period only when necessary.
Data Source
AI summary
An electronic device has a power saving function that reduces an amount of consumed power in response to a non-operating period, in which there are no operations from a user, reaching a predefined amount of time. The electronic device displays a time setting screen for setting a time in a display unit and sets the time in accordance with an operation accepted when the time setting screen is being displayed in the display unit, and carries out control such that an amount of time until the power saving function is executed is extended to be longer when the time setting screen is being displayed than when the time setting screen is not being displayed.