Fingerprint identification and authentication circuit of mobile terminal

Abstract

A fingerprint identification and authentication circuit of a mobile terminal is used for identifying fingerprints of a user when the mobile terminal enters procedures requiring authentication. The fingerprint identification and authentication circuit comprises an inputting module, a switching module, a scanning driving module, an identification driving module, a fingerprint sensing module, a sensing module, a signal processing module, a clock control module, a fingerprint imaging module, an I / O (input / output) control module and a master control module; and when the mobile terminal enters the procedures requiring authentication, a touch command inputted by a user is received, and a touch mode of the mobile terminal is switched into the fingerprint sensing module. A fingerprint image inputted by the user is acquired and is compared to a pre-stored fingerprint image, if the fingerprint image is consistent to the pre-stored fingerprint image, the user is permitted to enter the procedures requiring authentication, and if the fingerprint image is not consistent to the pre-stored fingerprint image, the user is forbidden from entering the procedures requiring authentication. Fingerprints belong to biological characteristics and are unique. After the fingerprints serve as procedure entering conditions, the user does not need to memorize an account and a corresponding password, and data of the account and the password are not easy to steal.

Description

technical field [0001] The invention relates to a fingerprint identification and authentication circuit, in particular to a mobile terminal fingerprint identification and authentication circuit for protecting privacy. Background technique [0002] With the development of mobile terminals, more and more personal information is involved in mobile terminals, and more and more accounts and corresponding passwords are used during the use of mobile terminals. Users have more and more various accounts and corresponding passwords. How to ensure the difference between accounts and passwords, and avoid setting the same password or passwords being confused is more and more troublesome for users. If all accounts and passwords use the same, it will cause all accounts and passwords to leak after losing one account and password, causing serious losses. If each uses a different username and password, it will inevitably lead to frequent confusion of passwords, resulting in failure to use no...

AI Technical Summary

Problems solved by technology

If all accounts and passwords are the same, it will cause all accounts and passwords to be leaked after losing one account and password, causing serious losses

If each uses a different username and password, it will inevitably lead to frequent confusion of passwords, resulting in failure to use normally

If all passwords are stored in paper notebooks or computers, there is a problem of password data being stolen. Even if encrypted and stored in computers, a password is still needed for protection. If this password is tapped, all passwords will be leaked

Images