Fingerprint identification method and mobile terminal

Abstract

The invention provides a fingerprint identification method. According to the method, a sensor matrix of a mobile terminal is divided into a plurality of blocks according to lines. Each block is controlled by an independent switch terminal, when fingerprint unlocking is carried out, scanning is carried out only in the block occupied by a fingerprint, and scanning is not carried out on the block notoccupied by the fingerprint, so that the scanning area is greatly reduced, the scanning time is shortened, the unlocking efficiency is improved, rapid fingerprint unlocking can be realized, and the energy consumption is reduced. The invention also provides a mobile terminal. The multiplexer of the mobile terminal is used for dividing the sensor matrix into a plurality of blocks. Each block can independently carry out fingerprint identification scanning. When fingerprint unlocking is carried out, scanning does not need to be carried out on the whole sensor matrix, the unlocking efficiency is improved, and electric energy is saved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a fingerprint identification method and a mobile terminal. Background technique [0002] With the development of smart phone manufacturing technology and mobile phone unlocking technology, fingerprint recognition and unlocking has become a routine configuration on mobile phones. At present, the fingerprint recognition technology used on mobile phones is usually capacitive fingerprint recognition, and recently emerging optical fingerprint recognition and ultrasonic fingerprint recognition. But without exception, these fingerprint recognition technologies are all based on fingerprint recognition on a specific part of the mobile phone, such as the home button of the mobile phone and a local area on the back of the mobile phone. The size of the fingerprint recognition area of ​​this design is close to that of a human Fingerprint size, fingerprint recognition area is small, not e...

AI Technical Summary

Problems solved by technology

But without exception, these fingerprint recognition technologies are all based on fingerprint recognition on a specific part of the mobile phone, such as the home button of the mobile phone and a local area on the back of the mobile phone. The size of the fingerprint recognition area of ​​this design is close to that of a human The size of the fingerprint, the area of ​​fingerprint recognition is small, and the convenience of use is insufficient

[0003] Based on the above problems, full-screen fingerprint unlocking technology has become the focus of research and promotion by major mobile phone manufacturers. There are problems such as slow unlocking speed and high power consumption, because the full-screen fingerprint recognition technology needs to scan the entire mobile phone screen for fingerprint recognition. Compared with partial fingerprint scanning, it takes a long time and consumes a lot of power.

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