Information Processing Apparatus Face Authentication Power Management
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Solution Overview
Problem
Existing information processing systems face challenges in managing screen brightness and system operation effectively when a person is no longer detected, leading to unnecessary power consumption and disruption of media playback due to transitions to standby states.
Innovation Solution
An information processing apparatus with multiple processors handles person detection and face authentication separately, allowing for controlled screen brightness reduction and system locking without transitioning to standby, ensuring continuous media playback and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the system transitions to standby state when person is no longer detected, then power consumption is reduced, but media playback is interrupted
Solution Approach 1:
The system dynamically adjusts the standby transition behavior based on the detected scenario. When face authentication is required, the system remains in normal operation state despite no person detection, allowing media playback to continue. When no authentication is needed, the system transitions to standby to save power. This dynamic adaptation resolves the contradiction between power saving and media continuity.
2Reliability
If face authentication processing is executed, then system security is improved, but camera cannot be used for person detection processing
Solution Approach 1:
The system segments camera usage into distinct time periods: first period for face authentication processing, and second period for person detection processing. This temporal segmentation allows the single camera to serve both security and presence detection functions without conflict, resolving the contradiction between security and camera versatility.
3Loss of energy
If screen brightness is reduced when person moves away, then power consumption is reduced, but brightness is restored when face authentication is needed
Solution Approach 1:
The system performs preliminary face authentication processing before transitioning to standby state. By detecting face presence and initiating authentication in advance, the system ensures that screen brightness is restored to normal level before the person fully moves away, preventing unnecessary brightness restoration later while maintaining power efficiency.
4Reliability
If system remains locked without transitioning to standby, then media playback continues, but power consumption is not reduced
Solution Approach 1:
The system uses feedback from face authentication results to determine subsequent power management actions. When authentication succeeds, the system transitions to standby with reduced power consumption. When authentication fails or is not performed, the system maintains normal operation to ensure media continuity. This feedback-based control resolves the contradiction between media playback and power saving.
Data Source
AI summary
An information processing apparatus includes: a memory which temporarily stores image data of an image captured by an imaging unit; a first processor which executes person detection processing to process the image data stored in the memory and to detect a face area with a face captured therein from the image in order to detect presence of a person, and face authentication processing to detect the face area from the image in response to a request from a system in order to authenticate the face; a second processor which gives instructions to make a transition of an operating state of the system and to change screen brightness of a display unit based on the detection result by the person detection processing; and a third processor which executes unlocking processing to unlock the system based on the authentication result by the face authentication processing.