Face Recognition Apparatus with Pyroelectric Presence Detection
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Solution Overview
Problem
Existing information processing apparatuses lack efficient power management and user authentication mechanisms, leading to inefficient power consumption and security concerns when switching between operational modes and authenticating users.
Innovation Solution
An information processing apparatus equipped with a pyroelectric sensor and imaging units for presence detection, allowing it to switch between standard and sleep modes based on user presence and authenticate users through face recognition, while storing usage logs for display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the apparatus continuously operates in standard mode to maintain readiness, then user authentication and log display responsiveness are improved, but power consumption increases
Solution Approach 1:
The apparatus dynamically switches between standard mode and sleep mode based on detected user presence. When a user is detected via pyroelectric sensor or imaging unit, the system transitions from sleep mode to standard mode, ensuring authentication readiness only when needed, thereby reducing unnecessary power consumption while maintaining reliability.
Solution Approach 2:
The system performs preliminary user presence detection using pyroelectric sensors and imaging units before fully activating authentication and log display functions. This preliminary action allows the system to remain in low-power sleep mode until user presence is detected, at which point it transitions to standard mode in advance of actual authentication needs.
2Measurement precision
If the apparatus uses multiple sensors and imaging units for presence detection, then user authentication accuracy is improved, but device complexity increases
Solution Approach 1:
The apparatus merges multiple detection modalities (pyroelectric sensing for thermal presence detection and imaging units for visual confirmation) into a unified presence detection system. This combination allows the system to cross-validate detection results, improving authentication accuracy while managing complexity through integrated processing in the controller.
Solution Approach 2:
The imaging units serve multiple functions: they detect user presence, capture face images for authentication, and potentially monitor user interactions with the device. This multi-functionality reduces the need for separate dedicated sensors for each function, thereby improving detection accuracy without proportionally increasing device complexity.
3Loss of information
If the apparatus stores detailed user interaction logs for display, then user accountability and tracking are improved, but information storage requirements increase
Solution Approach 1:
The system extracts and stores only the essential elements of user interactions (authentication events, log access times, and basic operation records) rather than storing complete detailed logs of all device activities. This selective extraction maintains user accountability for critical operations while minimizing data storage requirements by excluding redundant or less important information.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively manages power consumption by switching modes based on user presence and enhances security through face authentication, while providing a log of user interactions for display.
Implementation Method 1
An information processing apparatus equipped with a pyroelectric sensor and imaging units for presence detection
Data Source
AI summary
An information processing apparatus includes a memory that stores a log of use of the information processing apparatus by a user, and a display that displays the log of the information processing apparatus stored on the memory together with a face image of a face of the user.