Multi-Sensor Under-Screen Fingerprint Matching Time Reduction
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Solution Overview
Problem
Under-screen fingerprint identification technologies face challenges with increased power consumption and user experience due to longer fingerprint matching times required for large fingerprint identification areas, which are not effectively addressed by existing methods.
Innovation Solution
A multi-sensor-based under-screen fingerprint capturing method and system that utilizes multiple optical fingerprint sensors disposed under the display screen, allowing for extended fingerprint capturing regions within the display area, enabling blind-press type input and reducing the need for a dedicated fingerprint button, by determining an effectively pressed sensor to streamline fingerprint matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large area fingerprint identification is implemented under the display screen, then the fingerprint identification security is improved, but the fingerprint matching time increases and power consumption increases
Solution Approach 1:
The patent divides the large-area fingerprint sensor into multiple smaller sensing regions, each with its own sensor element. During fingerprint matching, only the sensing regions that actually detected fingerprint pressure are activated and processed, rather than processing the entire large sensor area. This segmentation allows the system to maintain large coverage area for security while reducing the actual processing workload and time.
2Reliability
If a large area fingerprint identification is implemented under the display screen, then the fingerprint identification security is improved, but the power consumption increases
Solution Approach 1:
The patent segments the large fingerprint sensor into multiple independent sensing regions. The system activates and processes only those segmented regions that detected fingerprint pressure, rather than continuously processing the entire sensor area. This reduces power consumption by minimizing the active processing area while maintaining the large physical coverage area for security.
Solution Approach 2:
The patent implements partial action by activating only the necessary portion of the fingerprint sensor that actually captured fingerprint data. Instead of processing the entire sensor area regardless of usage, the system performs partial processing on only the relevant sensing regions, thereby reducing power consumption while maintaining security through the available coverage area.
3Area of stationary object
If multiple fingerprint sensors are used to extend the fingerprint capturing region, then the display area coverage is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple fingerprint sensing regions into a unified sensor system that operates as a single integrated unit. The multiple sensing regions share common control logic, signal processing pathways, and integration with the display driver, which reduces the overall system complexity compared to having completely independent sensor systems. This merging approach maintains extended capturing region while managing device 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
This approach reduces fingerprint matching time, improves user experience, and decreases power consumption by only processing fingerprint information from the effectively pressed sensor, while maintaining high security and flexibility through adjustable number thresholds for different security levels.
Implementation Method 1
an under-screen optical sensor module that captures and detects returned light that is emitted by the display screen for displaying images and that is reflected back by the top surface of the screen assembly
Data Source
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AI summary
Provided are a multi-sensor-based under-screen fingerprint capturing method and system and an electronic device, where the method is applied to an under-screen fingerprint capturing system including multiple fingerprint sensors, and includes: acquiring fingerprint information of a user captured by the multiple fingerprint sensors, where each fingerprint sensor corresponds to a sensing region, and sensing regions corresponding to the multiple fingerprint sensors form a fingerprint capturing region of the under-screen fingerprint capturing system; and determining an effectively pressed fingerprint sensor among the multiple fingerprint sensors according to the fingerprint information of the user, where the fingerprint information of the user captured by the effectively pressed fingerprint sensor is used for fingerprint authentication of the user.