Fingerprint Unlocking With Parallel Touchscreen Initialization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fingerprint unlocking processes in electronic devices are inefficient due to lengthy initialization times of the liquid crystal display screen, which affects overall unlocking speed and efficiency.
Innovation Solution
The method involves generating an interrupt instruction upon detecting a touch operation on the fingerprint recognition region, allowing simultaneous initialization of the touchscreen and detection of the touch area, and illuminating the backlight only when the touch area meets a threshold, thereby optimizing the fingerprint unlocking process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fingerprint sensor is integrated into a wearable device, then user authentication capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the fingerprint sensor with the wearable device's existing processing unit and memory resources. The fingerprint sensor shares the device's processor for image processing and uses the same display and power management systems, thereby adding authentication capability without requiring separate dedicated hardware for each function.
Solution Approach 2:
The processing unit is designed to handle multiple functions including fingerprint image processing, device control, and user interface management. This multi-functional approach allows the same hardware resources to serve both the fingerprint authentication system and other wearable device operations, reducing overall device complexity.
2Ease of manufacture
If fingerprint image processing is performed using existing processing units, then manufacturing cost is reduced, but processing speed and accuracy may be insufficient
Solution Approach 1:
The system performs preliminary processing of fingerprint images by detecting and extracting fingerprint features (such as ridges and valleys) before final authentication decisions are made. This preliminary feature extraction and classification prepares the data for faster subsequent processing and comparison operations.
Solution Approach 2:
The patent creates a digital copy or template of the fingerprint image and stores it in memory for later comparison. By pre-processing and storing fingerprint特征 (characteristics) as templates, the system enables rapid matching during authentication without requiring complex real-time processing, thus improving speed while using existing processing units.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This application discloses a fingerprint unlocking method, an electronic device, a readable storage medium, and a chip, and pertains to the field of terminal technologies. The method is applied to an electronic device, and the method includes: generating an interrupt instruction and detecting a touch area of a touch operation in response to the touch operation on a fingerprint recognition region in a touchscreen of the electronic device; controlling, in response to the interrupt instruction, the touchscreen to perform an initialization operation; illuminating a backlight of the electronic device when initialization on the touchscreen is completed and the touch area is greater than or equal to an area threshold; and controlling, when the backlight is illuminated, the electronic device to perform a fingerprint unlocking operation. In this application, when fingerprint unlocking is performed, if the touch operation is detected, the touchscreen is directly controlled, in response to the interrupt instruction, to perform the initialization operation, so that the initialization operation on the touchscreen and the operation of detecting the touch area are performed at the same time, thereby shortening fingerprint unlocking duration, and improving fingerprint unlocking efficiency.