Display Power Supply Wake Control Using Presence and Context Detection
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Solution Overview
Problem
Existing power supply devices and display apparatuses face challenges in efficiently managing power modes based on human presence detection, leading to inconvenient and inefficient transitions between normal and power saving modes.
Innovation Solution
A power supply device and display apparatus that includes circuitry to acquire detection results from sensors, determining whether first and second conditions are satisfied to cancel power saving modes based on user operations and environmental factors, ensuring timely and user-friendly transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the power saving mode is canceled immediately upon detecting a person, then the responsiveness to user presence is improved, but the power saving mode may be canceled unnecessarily causing increased power consumption
Solution Approach 1:
The system performs preliminary actions by disabling mode switching for a predetermined period immediately when a person is detected. This prevents premature cancellation of power saving mode while still preparing for potential user interaction, thus avoiding unnecessary power consumption while maintaining readiness for genuine user presence
Solution Approach 2:
The system dynamically adjusts its response based on the timing and sequence of detection events. By implementing a time-based restriction on mode switching, the system creates a dynamic control mechanism that balances between being responsive to user presence and avoiding spurious detections, optimizing power consumption accordingly
2Use of energy by moving object
If the mode switching is disabled for a certain period after detecting a person, then the unnecessary power consumption is reduced, but the responsiveness and user convenience deteriorates
Solution Approach 1:
The system disables mode switching for a predetermined period as a preliminary measure to prevent unnecessary power consumption. This time-based restriction is applied automatically upon detecting a person, ensuring that power saving mode is not canceled due to spurious detections while still allowing genuine user interactions after the period expires
Solution Approach 2:
The system implements a dynamic control mechanism where the responsiveness to user presence is temporarily reduced during the predetermined period. This dynamic adjustment balances power consumption reduction with user convenience, allowing the system to be less responsive during the restriction period and fully responsive afterward
Data Source
AI summary
A power supply device includes circuitry to supply power to an information processing apparatus, acquire a detection result of a person by a sensor disposed at the information processing apparatus, output a first determination result indicating whether a first condition is satisfied, and output a second determination result indicating whether a second condition is satisfied. When the detection result indicates that a person is detected in a state where the information processing apparatus is in a power saving mode, the circuitry cancels the power saving mode based on the first determination result and the second determination result. In the power saving mode, the power supplied to the information processing apparatus is reduced as compared with a normal mode. The first condition relates to an operation receivable by the information processing apparatus, and the second condition relates to a situation around the information processing apparatus.