Apparatus and method for recognizing fingerprint dually

A method for authenticating a fingerprint dually in an apparatus for recognizing the fingerprint, the method comprising:

• disposing an optical sensor unit for sensing one entire fingerprint of a user's finger, and a semiconductor sensor unit for sensing a portion of the fingerprint such that they are adjacent to each other;
• when the fingerprint touches the semiconductor sensor unit and a portion of the fingerprint is obtained as a unit fingerprint image, driving the optical sensor unit to obtain a first fingerprint image of the fingerprint according to an optical fingerprint recognizing method;
• generating first fingerprint data, which is minutiae data, from the first fingerprint image;
• and
• searching for data of registration fingerprint data registered in advance that matches with the first fingerprint data to perform authentication.

An apparatus for recognizing a fingerprint dually, the apparatus comprising:

• A first fingerprint input window touched by a finger;
• A second fingerprint input window located adjacently to the first fingerprint input window;
• an optical sensor unit for obtaining a first fingerprint image of the finger through the first fingerprint input window;
• a semiconductor sensor unit for obtaining a unit fingerprint image of a portion of the finger through the second fingerprint input window;
• a memory for storing registration fingerprint data, which are fingerprint data of a plurality of users registered in advance;
• and
• a control unit for controlling the optical sensor unit to operate when the unit fingerprint image is input from the semiconductor sensor unit, generating fingerprint data on the basis of the first fingerprint image received from the optical sensor unit, and comparing the generated fingerprint data with the registration fingerprint data to perform authentication.