Optical Sensor Authorization With Selective Pixel Activation
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Solution Overview
Problem
Existing object detection and identification technologies are power-consuming and unreliable, particularly in always-on scenarios, and token-based identification systems are prone to loss or breach, necessitating a more efficient and secure authentication method.
Innovation Solution
A low-power object detection system using a camera with selectively activated sensing structures, employing a multi-stage authorization process to minimize energy consumption and enhance security by comparing sensed images with baseline models, transitioning to higher power modes only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional object detection and identification technology is used, then accurate identification can be achieved, but power consumption is very high
Solution Approach 1:
The patent segments the object detection process into multiple stages: initial detection using a first baseline model with a first number of sensing structures, followed by confirmation using a second baseline model with a second number of sensing structures. This segmentation allows the system to perform preliminary screening with low power consumption and only escalate to high-power processing when initially detected, thereby resolving the contradiction between identification accuracy and power consumption.
Solution Approach 2:
The patent applies partial action by using only a first number of sensing structures (less than the total number) for initial detection and comparison with the first baseline model. Only when correlation exceeds a threshold does the system activate additional sensing structures for confirmation. This partial activation strategy maintains identification accuracy while significantly reducing average power consumption compared to always using full sensing capacity.
2Reliability
If a personal token is used for identification, then authentication can be achieved, but the token can be lost or breached
Solution Approach 1:
The patent replaces physical tokens with optical copies - specifically, baseline models that represent image characteristics of authorized users or objects. Instead of relying on physical tokens that can be lost or breached, the system creates and stores optical representations (baseline models) that can be repeatedly used for authentication without degradation or security compromise, thereby resolving the reliability versus token vulnerability contradiction.
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 system achieves significant power savings while maintaining high security by making initial matches with minimal energy, ensuring reliable identification with reduced reliance on physical tokens, thus addressing power and security issues in always-on scenarios.
Implementation Method 1
a camera with selectively activated sensing structures... a first image sensed by the activated first number of sensing structures is obtained
Data Source
AI summary
A method of authorizing a device action includes accessing a first baseline model that represents image characteristics of an authorized first user or object. The first baseline model is used as a basis for selecting a first number of sensing structures of a camera image sensor, wherein the first number of sensing structures of the camera image sensor is less than a total number of sensing structures of the camera image sensor. The selected first number of sensing structures of the camera image sensor is activated and a first image sensed by the activated first number of sensing structures is obtaining. The first image is compared with the first baseline model. A next round of authorization processing is activated when an amount of correlation between the first image and the first baseline model satisfies a threshold correlation amount.