Low Power Power-On Processing with Voltage Monitoring
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Solution Overview
Problem
Existing low-battery processing methods fail to effectively prompt users that a mobile device is in a low-battery state when powered on, leading to poor user experience and incorrect assumptions about device functionality.
Innovation Solution
A method and apparatus that trigger a system start in a low-battery power-off state, presenting a low-battery prompt on the screen, with voltage monitoring to determine the power-off state and perform corresponding power-on/off processing based on charging or non-charging power-on events, allowing users to recognize the low-battery state before powering on.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal uses traditional indicator lamp to prompt low-battery state, then the device structure remains simple, but the user experience deteriorates due to misleading prompts and black screen state
Solution Approach 1:
The patent replaces the mechanical indicator lamp system with an electronic software-based prompt system. The low-battery prompt is displayed directly on the screen through software control, eliminating the need for additional hardware indicator lamps and complex PMIC control circuits while improving user experience reliability
Solution Approach 2:
The screen is made multi-functional by using it both for normal display operations and for low-battery prompting. This eliminates the need for dedicated indicator lamp hardware, reducing device complexity while maintaining reliable user feedback about battery status
2Ease of operation
If the PMIC cannot individually charge the battery and supply power, then the power management circuit remains simple, but the terminal cannot be smoothly powered on in low-battery state
Solution Approach 1:
The system performs preliminary voltage detection before the power-on operation. When the battery voltage is detected to be between the power-off voltage and system starting voltage, the system prepares by displaying a low-battery prompt and preventing normal power-on, thereby avoiding the black screen state and ensuring smooth power-on operations
Solution Approach 2:
The system introduces an intermediary voltage detection and judgment mechanism between the battery and the power-on process. This intermediary layer detects battery voltage and controls the power-on behavior accordingly, enabling smooth power-on in low-battery states without requiring complex PMIC charging circuits
3Reliability
If the terminal powers on in low-battery state without voltage detection, then the power-on process is simple, but the system cannot start properly and remains in black screen state
Solution Approach 1:
The system performs preliminary voltage detection before attempting to power on. By detecting whether the battery voltage is above the system starting voltage threshold, the system ensures reliable startup conditions are met before initiating the power-on sequence, preventing black screen states
Solution Approach 2:
The system implements feedback by continuously monitoring battery voltage and using this information to control power-on behavior. When voltage is insufficient, the system provides feedback through low-battery prompts and prevents power-on, ensuring reliable system startup without requiring complex additional hardware
Data Source
AI summary
The present invention discloses a method for low power power-on processing, the method comprising: when a terminal receives a power-on event in a low power power-off state, triggering a system to start according to the power-on event, wherein a battery voltage in the low power power-off state is less than or equal to a power-off voltage and is greater than or equal to a system starting voltage; and after the system is started, presenting a low power prompt via a screen.