Standby Face Screening for Reliable Electronic Apparatus Booting
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Solution Overview
Problem
Existing electronic devices face issues with unnecessary booting due to inaccurate face detection, which can occur when faces are too far, too close, in profile, or in bright environments, leading to improper authentication.
Innovation Solution
The electronic apparatus employs face detection processing to identify a face area that meets specific conditions for authentication, such as size, position, orientation, and brightness, before initiating boot processing, and allows for disabling face authentication to ensure proper system activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If face detection is performed without additional conditions in standby state, then the electronic apparatus can respond quickly to user approach, but unnecessary booting occurs when faces are too far, too close, or in profile
Solution Approach 1:
The patent performs preliminary face detection in the standby state to identify potential faces before full booting occurs. This preliminary action filters out obvious non-authenticatable faces (too far, too close, profile) while maintaining quick response to valid user approaches. The face detection runs before authentication to pre-assess whether a detected face meets basic geometric conditions.
Solution Approach 2:
The patent segments the face detection and authentication process into distinct stages: initial face detection in standby state, geometric condition verification (size, position, orientation checks), and then full authentication only when conditions are met. This segmentation prevents unnecessary booting by filtering faces that cannot satisfy authentication requirements.
2Reliability
If face authentication is always required for booting, then security is improved, but system usability deteriorates when face authentication cannot be performed
Solution Approach 1:
The patent dynamically adjusts the authentication requirements based on the detection context. When a face is detected in unsuitable conditions (profile, too far, too close), the system recognizes that face authentication cannot succeed and allows alternative boot methods. This dynamic adaptation maintains security when possible while ensuring usability when face authentication is not feasible.
Solution Approach 2:
The patent changes the authentication parameters based on geometric conditions. When face size, position, or orientation falls outside acceptable ranges, the system modifies its authentication requirements, allowing booting without face authentication. This parameter adjustment balances security requirements with practical usability constraints.
3Ease of operation
If boot processing is executed frequently in standby state, then user convenience is improved, but power consumption increases
Solution Approach 1:
The patent performs partial face detection processing in the standby state rather than full authentication. It checks only essential geometric conditions (face size relative to image area, position within image, orientation) without completing full authentication. This partial action reduces power consumption while still preventing obviously invalid boot attempts.
Solution Approach 2:
The patent skips full boot processing when face detection indicates unsuitable conditions. By rapidly assessing geometric parameters and determining that authentication cannot succeed, the system rushes through the evaluation phase and avoids unnecessary booting, thereby conserving power while maintaining user convenience for valid cases.
Data Source
AI summary
An electronic apparatus includes a memory which temporarily stores image data of an image captured by an imaging device, and a processor which processes image data stored in the memory to execute boot processing to boot a system from a standby state based on an authentication result by face authentication. The processor processes image data of an image captured by the imaging device and stored in the memory in the standby state to detect, from the image, a face area in which a face that satisfies possible conditions for face authentication is captured, and when a face area that satisfies the possible conditions for face authentication is detected from the image, the processor gives a boot instruction to execute the boot processing.