Optical Fingerprint Module Integrating Health Sensors
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Solution Overview
Problem
The separate arrangement of health sensors on electronic devices, such as smartphones, reduces the screen-to-front panel area ratio and affects the mechanical strength of the device, as well as requiring additional layout space and design compromises.
Innovation Solution
An optical fingerprint module integrating both fingerprint and health sensors, utilizing a light sensing unit, signal processing unit, and control unit to collect and process light signals for fingerprint recognition and health parameter generation, eliminating the need for a separate health sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If health sensors are separately arranged on electronic devices, then health monitoring function is achieved, but the screen-to-front panel area ratio is reduced and mechanical strength is affected
Solution Approach 1:
The patent combines the health sensor and fingerprint sensor into a single integrated optical sensor module. The optical sensor serves dual purposes: capturing light signals for fingerprint recognition and detecting physiological signals for health monitoring. This merging eliminates the need for separate health sensor placement, thereby preserving the front panel area ratio and maintaining mechanical strength while achieving both fingerprint authentication and health monitoring functions.
Solution Approach 2:
The optical sensor is designed with multi-functionality to perform both fingerprint sensing and health monitoring tasks. By using the same hardware component for multiple functions, the patent avoids the space occupation and design compromises associated with separate sensor arrangements, thus improving the screen-to-front panel area ratio while maintaining mechanical integrity.
2Adaptability or versatility
If health sensors are separately arranged on electronic devices, then health monitoring function is achieved, but mechanical strength of the device is affected
Solution Approach 1:
The patent merges the health sensor functionality into the existing fingerprint sensor module, eliminating the need for separate sensor placements that would compromise mechanical strength. The integrated optical sensor maintains the structural integrity of the front panel while enabling health monitoring capabilities.
3Adaptability or versatility
If separate health sensors are used, then health monitoring is enabled, but additional layout space and design compromises are required
Solution Approach 1:
The patent combines health monitoring and fingerprint recognition functions into a single optical sensor module, significantly reducing layout space requirements and simplifying the overall design. This integration eliminates the need for separate sensor placements and associated circuitry, thereby reducing design complexity while maintaining both functionalities.
Solution Approach 2:
The optical sensor is designed as a universal component that performs multiple functions: fingerprint authentication and health monitoring. This multi-functionality approach reduces the number of components needed, simplifies the layout design, and eliminates design compromises associated with accommodating separate sensors.
4Area of stationary object
If integrated optical sensor is used, then screen-to-front panel area ratio is enhanced, but signal processing complexity increases
Solution Approach 1:
The patent applies segmentation by separating the signal processing into distinct functional modules within the processor: one module handles fingerprint signal processing while another handles health monitoring signal processing. This segmentation allows the integrated optical sensor to maintain its space-efficient design while managing signal processing complexity through modular organization, enabling independent optimization of each processing pathway.
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 integration enhances the screen-to-front panel area ratio, reduces hardware costs, and improves accuracy by minimizing mutual interference between fingerprint and health signal processing, while allowing flexible circuit designs and reduced development complexity.
Implementation Method 1
The light sensing unit is configured to collect a light signal
Data Source
AI summary
An optical fingerprint module and a method for processing a signal includes a light sensing unit, a signal processing unit and a control unit. The light sensing unit is configured to collect a light signal. The signal processing unit is connected to the light sensing unit and is configured to process the light signal collected by the light sensing unit to generate at least one of a fingerprint signal and a health signal. The control unit is connected to the signal processing unit and is configured to generate fingerprint information for fingerprint recognition based on the fingerprint signal output by the signal processing unit, and generate health parameter information based on a health signal output by the signal processing unit.