| 摘要 |
<p>PURPOSE:To confirm a person himself by a card itself by storing previously analog data to express the person himself after converting it into digital data and comparing it. CONSTITUTION:The fingerprint of the processor of a card is picked by pressing the fingerprint part of his thumb upon an analog inputting part 14 at the time of the initialization of the IC card 11. A CPU control part 15 instructs the inputting part 14 to read a picture at prescribed timing, and the image of the fingerprint is read. The image of the fingerprint is sent to an AD converting part 17, and binarized by determining a threshold value from the inputted analog data, and made into the digital data. The control part 15 treats the digital data of the fingerprint part of the thumb, and extracts the curve of the fingerprint, and stores it in a memory part 16. When the person in question is confirmed, the control part 15 decides analogy between the image of the fingerprint of the person himself stored at the time of the initialization and the image of the fingerprint inputted this time.</p> |
