Fingerprint Sensor Area Segmentation for Touch Screen UI
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Solution Overview
Problem
Fingerprint recognition in electronic devices is hindered by the difficulty in intuitive input due to separate fingerprint input areas from user interface objects, leading to slower recognition speeds and increased battery consumption.
Innovation Solution
An electronic device with a touch screen and integrated fingerprint sensors, where a processor controls the display of graphic objects, detects attribute information, activates the fingerprint sensor area corresponding to these objects, and acquires fingerprint information, optimizing the sensing area for faster recognition and reduced power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fingerprint sensor scans a large area to ensure complete fingerprint capture, then the reliability of fingerprint recognition is improved, but the fingerprint recognition speed decreases and battery consumption increases
Solution Approach 1:
The fingerprint sensor area is divided into multiple regions, with only the relevant region (corresponding to the graphic object position) being actively scanned. This segmentation allows the system to maintain reliable fingerprint capture by focusing on the necessary area while avoiding unnecessary scanning of irrelevant regions, thus improving recognition speed without compromising reliability.
Solution Approach 2:
Different areas of the touch screen have different functions: some areas display graphic objects that require fingerprint scanning, while other areas do not. The system applies local quality by activating fingerprint sensing only in the specific local area where a graphic object is present, rather than uniformly scanning the entire sensor area. This resolves the contradiction by maintaining reliability in the relevant local area while improving overall speed through selective scanning.
2Reliability
If the fingerprint sensor scans a large area to ensure complete fingerprint capture, then the reliability of fingerprint recognition is improved, but the battery consumption increases
Solution Approach 1:
The scanning area is segmented into relevant and irrelevant regions based on graphic object positions. Only the relevant segment is actively scanned, reducing the total energy required for fingerprint recognition while maintaining reliability by ensuring complete coverage of the necessary fingerprint area.
Solution Approach 2:
Instead of scanning the entire fingerprint sensor area, the system performs partial scanning only in the regions where graphic objects are located. This partial action is sufficient to capture the required fingerprint information for authentication, thereby reducing battery consumption without compromising recognition reliability.
3Adaptability or versatility
If the fingerprint input area is located separately from the user interface object area, then the device layout flexibility is improved, but the ease of operation decreases
Solution Approach 1:
The system merges the fingerprint sensing function with the graphic object display area by enabling fingerprint scanning at the specific location where a graphic object is presented. This integration allows users to perform fingerprint authentication directly on or near the relevant UI element, improving intuitive operation while maintaining the flexible layout architecture that separates the fingerprint sensor hardware from the display layers.
Solution Approach 2:
The graphic object acts as an intermediary that links the user interface with the fingerprint sensing function. When a graphic object is displayed at a particular position, it mediates between the user's visual attention and the fingerprint sensor activation, guiding users to place their finger at the appropriate location for authentication without requiring a separate, fixed fingerprint input area.
Data Source
AI summary
Disclosed herein are an electronic device and method. The electronic device includes a touch screen, at least one fingerprint sensor disposed on the touch screen, and a processor implementing the method, including controlling the touch screen to display one or more graphic objects, detecting attribute information of at least one graphic object associated with a fingerprint sensor disposed on at least a part of the touch screen from among the one or more graphic objects, activating an area of the fingerprint sensor based on the attribute information, the activated area of the fingerprint sensor corresponding to the at least one graphic object, and acquiring fingerprint information through the activated area of the fingerprint sensor.