Iris Recognition Module with Proximity-Gated LED Exposure
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Solution Overview
Problem
Iris authentication methods using light emitting diodes can cause eye strain and potential harm when used at close distances, necessitating a solution to enhance user safety and comfort during authentication processes.
Innovation Solution
An electronic device equipped with a proximity detector and iris recognition module that adapts its operation based on user proximity, adjusting or stopping iris recognition when the user is within a certain range to prevent excessive exposure to light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If iris authentication using LED light is continuously emitted, then authentication reliability is improved, but user eye safety deteriorates due to excessive light exposure at close distance
Solution Approach 1:
The patent implements dynamic control of the LED light emission based on real-time proximity detection. The system continuously monitors user distance and adjusts light emission accordingly - emitting light when user is at safe distance, reducing intensity or stopping emission when user approaches too close. This dynamic adaptation resolves the contradiction by maintaining authentication reliability when safe while preventing eye harm when proximity is detected
Solution Approach 2:
The system employs feedback control through proximity sensors that continuously monitor user distance and provide real-time information to the control unit. Based on this feedback, the system automatically adjusts LED emission levels - maintaining full intensity for reliable authentication at proper distances, but reducing or stopping emission when users are too close to prevent eye strain. This closed-loop feedback mechanism balances authentication reliability with user safety
2Object-affected harmful factors
If proximity detection is added to control light emission, then user safety is improved, but device complexity increases
Solution Approach 1:
The patent leverages the existing proximity sensor, originally designed for other functions such as call termination or display dimming, and repurposes it for light emission control during iris authentication. By making the proximity detection capability multi-functional, the system prevents eye strain without adding dedicated hardware, thus improving user safety while minimizing increases in device complexity
Solution Approach 2:
The system uses the device's own existing proximity sensing capability to regulate its own light emission during authentication. Rather than requiring external safety mechanisms or additional specialized sensors, the device self-regulates by utilizing its built-in proximity detection to automatically control LED intensity based on user distance, thereby preventing eye strain without external intervention or added complexity
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
Enhances user safety by reducing eye strain and potential harm from iris authentication light exposure, while maintaining secure authentication functionality.
Implementation Method 1
determining proximity of a user based on a proximity detector during an iris recognition operation
Implementation Method 2
an electronic device continuously emits specific light (for example, a light emitting diode (LED) to recognize an iris)
Data Source
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Figure 3A
AI summary
An electronic device and a method of operating the electronic device are provided. The electronic device includes a proximity detector; an iris recognition module; a memory; and a processor electrically connected to the proximity detector, the iris recognition module, and the memory, wherein the processor is configured to execute an iris recognition operation based on the iris recognition module; determine proximity of an object based on the proximity detector while the iris recognition operation is performed; and, if the proximity of the object includes within a set reference range, stop the iris recognition operation.