Low Power Detection Apparatus for Portable Terminals
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Solution Overview
Problem
Existing portable terminals require users to press the power button to switch from an idle to an active state to view simple information, leading to inconvenient frequent state switching and continuous power consumption due to proximity detection sensors.
Innovation Solution
A low power detection apparatus and method that uses a detection sensor to identify user approaches and a low power manager to determine motion for a preset time, only activating the display when no motion is detected, thereby reducing power consumption and minimizing unnecessary state changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the proximity detection sensor continuously operates to detect user approach, then the convenience of identifying simple information is improved, but the power consumption increases
Solution Approach 1:
The proximity detection sensor operates periodically rather than continuously. The sensor is activated only when the portable terminal transitions to an active state, performing detection at specific intervals rather than maintaining constant operation, thereby reducing overall power consumption while preserving user convenience.
Solution Approach 2:
The operational state of the proximity detection sensor is dynamically adjusted based on the portable terminal's state. The sensor operates actively when the terminal is in active state and remains inactive or in low-power mode when the terminal is in idle state, adapting its behavior to current system conditions to optimize power consumption.
2Ease of operation
If the portable terminal frequently switches between idle and active states to display information, then the information accessibility is improved, but the entire idle time is reduced and power consumption increases
Solution Approach 1:
The system performs preliminary detection of user approach using the proximity sensor before fully transitioning to the active state. When approach is detected, the system prepares for state transition in advance, allowing more efficient state management and reducing unnecessary transitions that would otherwise fragment idle time.
Solution Approach 2:
The system uses feedback from the proximity detection sensor to intelligently control state transitions. The detection results feed back to the state management logic, enabling the system to distinguish between intentional approach (requiring state transition) and unintentional approach (maintaining idle state), thereby preserving idle time while maintaining information accessibility when needed.
3Ease of operation
If the portable terminal switches to active state upon detecting approach, then the user convenience is improved, but unnecessary state switching occurs when detection is inadvertent
Solution Approach 1:
The system performs preliminary verification by checking whether the detected approach matches expected user behavior patterns before triggering a state transition. This preliminary action filters out inadvertent detections and ensures that state transitions occur only when genuinely intended by the user, improving both reliability and user convenience.
Solution Approach 2:
The system incorporates feedback mechanisms that analyze detection patterns and user behavior to distinguish between intentional and inadvertent approach. The feedback loop allows the system to learn from past interactions and improve its detection accuracy over time, reducing false positives while maintaining high user convenience.
Data Source
AI summary
A low power detection apparatus and a method for displaying information are provided. When a low power manager drives a proximity detection sensor to generate a proximity interrupt in a state within which the portable terminal is in an idle state, the low power manager drives a motion detection sensor and determines a motion of the portable terminal for a preset time. When there is no motion of the portable terminal for the preset time, the low power manager generates proximity data for displaying screen information and then transmits the generated proximity data to an application processor so as to display screen information which the user desires with low power.