Dynamic Camera Resolution Control for Face Recognition
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Solution Overview
Problem
Electronic devices lack efficient power utilization in their display control functions, leading to suboptimal performance and increased power consumption.
Innovation Solution
A method and apparatus that dynamically control screen display based on the device's power state and user presence by adjusting camera resolution and using sensor data to manage screen interactions, such as scrolling, playback, and response actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera operates at high resolution to improve face recognition accuracy, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The system dynamically adjusts camera resolution based on detection needs. The control unit switches between high resolution mode for accurate face recognition and low resolution mode for general presence detection, making the resolution adaptive rather than fixed. This resolves the contradiction by applying high measurement precision only when necessary for face recognition while using low resolution for routine monitoring to save energy.
Solution Approach 2:
The patent changes the camera resolution parameter based on operational requirements. The control unit modifies the resolution parameter from high to low depending on whether face recognition is needed or if only presence detection is required. This parameter adjustment directly addresses the contradiction by optimizing the balance between measurement precision and energy consumption.
2Productivity
If the camera operates continuously at high resolution to improve user interaction responsiveness, then productivity is improved, but use of energy increases
Solution Approach 1:
Instead of continuous high-resolution operation, the system employs periodic action by switching between different resolution modes based on detected needs. The control unit periodically assesses whether face recognition is required and adjusts camera resolution accordingly. This periodic adjustment maintains productivity by ensuring high resolution is available when needed while reducing energy consumption during periods when only presence detection is required.
Solution Approach 2:
The system applies partial action by using high resolution camera operation only partially - specifically when face recognition is detected as necessary. For other periods where only user presence needs to be monitored, the camera operates at low resolution. This partial application of high resolution maintains responsiveness when needed while avoiding excessive energy consumption during routine monitoring.
3Use of energy by moving object
If the camera operates at low resolution to reduce power consumption, then use of energy is improved, but measurement precision deteriorates
Solution Approach 1:
The control unit dynamically switches camera resolution based on operational requirements. When face recognition is needed, the system transitions to high resolution mode to ensure adequate measurement precision. When only presence detection is required, the system operates at low resolution to conserve energy. This dynamic adaptation resolves the contradiction by matching resolution to the actual measurement needs.
Solution Approach 2:
The patent implements parameter changes by adjusting camera resolution from low to high based on detection requirements. The control unit modifies the resolution parameter in response to whether face recognition or mere presence detection is needed, ensuring that measurement precision is sufficient when required while minimizing energy consumption during routine operation.
4Duration of action of moving object
If the camera operates at low resolution to extend battery life, then duration of action is improved, but measurement precision deteriorates
Solution Approach 1:
The system uses periodic action by alternating between low resolution operation for extended battery life and high resolution operation when face recognition is needed. The control unit periodically evaluates whether face recognition is required and temporarily switches to high resolution mode, then returns to low resolution mode to preserve battery life. This periodic switching achieves both extended duration of action and adequate measurement precision when needed.
Solution Approach 2:
The patent applies partial action by using high resolution camera operation only partially - specifically during face recognition tasks. For the majority of time when only presence detection is needed, the camera operates at low resolution to extend battery life. This partial use of high resolution maintains measurement precision when necessary while maximizing battery duration during routine operation.
Data Source
AI summary
A screen display control method is provided for controlling screen display of an electronic device more efficiently. A screen display control method includes determining a resolution of a camera, recognizing a face of a user using the camera operating at the determined resolution, and controlling screen display of the electronic device based on the face.