iGEEKPHONE July 30 news, blogger digital chat station broke the news that Huawei is self-developing ultrasonic fingerprint technology, compared with competing products, Huawei power consumption is more advantages, but Mate 70 series without this new technology, next year’s Pura 80 series is expected to carry.
It is reported that the working principle of ultrasonic fingerprint technology is to use ultrasonic has the ability to penetrate the material, and with the different size of the material to produce different echoes, when the ultrasonic reaches the surface of different materials, the degree of absorption, penetration and reflection is different.
Specific to the application scenario, the fingerprint recognition chip emits ultrasonic pulses to sample the fingerprint, and the sensor uses the reflected pulses to obtain three-dimensional information of the fingerprint.
Ultrasonic pulses can be scanned through the glass and sapphire screen, and the ultrasonic fingerprint recognition sensor can not only scan the fingerprint surface, but also scan the depth of the gully and the underlying tissue, which greatly improves the safety.
Compared with the traditional optical fingerprint scheme, the security and identification speed of ultrasonic fingerprints are faster, and the accuracy of scanning fingerprints is not affected by finger dirt, grease and sweat.