Ultrasonic fingerprint identification method, chip, system, electronic equipment and storage medium

By adaptively adjusting the configuration information of the ultrasonic piezoelectric transducer, the problem that ultrasonic fingerprint recognition technology cannot be compatible with the fingerprint characteristics of different users is solved, and a higher quality fingerprint image acquisition and recognition effect is achieved.

CN120476434APending Publication Date: 2025-08-12SHENZHEN GOODIX TECH CO LTD
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Patent Information

Application Number
CN202580000284.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

The existing ultrasonic fingerprint recognition technology is not compatible with the differences in fingerprint characteristics of different users, affecting the fingerprint image quality and recognition effect.

Method used

By controlling the ultrasonic piezoelectric transducer to acquire fingerprint images based on the first configuration information, perform spatial frequency identification, adjust the second configuration information according to the first spatial frequency to adapt to the user's fingerprint characteristics, and dynamically update the configuration information to improve image quality and recognition effect.

Benefits of technology

It improves the universality of the ultrasonic fingerprint system, can better be compatible with the fingerprint characteristics of different users, and improves the quality of fingerprint image acquisition and recognition effect.

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Abstract

The invention discloses an ultrasonic fingerprint identification method, a chip, a system, electronic equipment and a storage medium, and the method comprises the steps: controlling an ultrasonic piezoelectric transducer to work based on first configuration information, and obtaining one or more first fingerprint images; performing spatial frequency identification on the one or more first fingerprint images, and determining a first spatial frequency corresponding to the one or more first fingerprint images; when one or more first fingerprint images meet the adaptive condition, determining second configuration information based on the first spatial frequency and the first configuration information; and updating the first configuration information by adopting the second configuration information. According to the method, the first configuration information is dynamically adjusted based on the first spatial frequency corresponding to the first fingerprint image, so that the adjusted second configuration information can effectively guarantee the overall performance of the ultrasonic fingerprint system, the quality of the fingerprint image acquired subsequently is improved, the recognition effect is improved, and the universality of the system is improved.
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