A low-energy consumption fingerprint identification method under a mobile phone screen

Abstract

The invention discloses a low-energy-consumption fingerprint identification method under a mobile phone screen, which comprises the following steps: a mobile phone is in a dormant state and waits fora dormant wake-up event; the mobile phone is awakened and enters a fingerprint identification mode; the touch panel displays a fingerprint guide icon; after the touch panel receives the fingerprint pressing, the fingerprint guide icon is changed into pure color and the brightness is kept; the fingerprint identification module is awakened in a dormant state; after waking up, the mobile phone central controller sends an acquisition instruction to the fingerprint identification module, and the fingerprint identification module performs fingerprint image acquisition; after the collected image is interacted with the mobile phone center control, fingerprint recognition is carried out through a recognition algorithm, and a result is returned to the upper-layer application program. A good recognition environment is provided by utilizing the conditions of the mobile phone, so that the optical fingerprint sensor can carry out fingerprint recognition in any external environment; by combining theawakening mobile phone, the awakening fingerprint identification module and the mobile phone central control, the internal resources of the mobile phone can be effectively saved, and the limited endurance time of the mobile phone is ensured.

Description

technical field [0001] The invention belongs to the technical field of fingerprint identification, and in particular relates to a method for identifying fingerprints under the screen of a mobile phone with low energy consumption. Background technique [0002] Fingerprints are uneven lines composed of valleys and ridges on human fingers, which are random and unique. In various application scenarios, identity confirmation is carried out by identifying fingerprints. There are many implementation solutions for fingerprint chips, such as capacitive Fingerprint sensor, inductive fingerprint sensor, traditional optical fingerprint sensor, etc. [0003] Capacitive fingerprint sensor or inductive fingerprint sensor: The finger is used as another electrode of capacitance or inductance. The unevenness of the finger will form different inter-electrode distances, resulting in different capacitance or inductance values, and then collect fingerprint data. [0004] Traditional optical fing...

AI Technical Summary

Problems solved by technology

[0005] However, the existing capacitive fingerprint sensor or inductive fingerprint sensor will occupy a certain external area, and it is necessary to punch holes in the panel, and an external sensor perception module will weaken the smoothness of the appearance of the whole machine; although the optical fingerprint sensor can be placed in Below the screen, but due to its high requirements on light conditions, it cannot be applied to fingerprint recognition under the screen, which makes the recognition conditions limited, the recognition effect is poor, and the recognition speed is slow

And the existing fingerprint recognition method for mobile phone can't realize the reasonable coordination between fingerprint recognition and mobile phone self control, has caused a large amount of waste of internal resource of mobile phone, has taken up the life time of mobile phone

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