| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a confidential information card, a card reading device, a card reading method, a card reading system, a program and a recording medium, wherein a plurality of pieces of different confidential information are disposed on the same face of one card and wherein the plurality of pieces of the confidential information can be read. <P>SOLUTION: This confidential information card includes: a plurality of watermark patterns obtained by printing a watermark pattern that is a reference generated by a binarized pattern generation means and one or more other watermark patterns on a base material by infrared absorption ink; and a pattern layer formed on the plurality of watermark patterns by infrared transmissive ink. The card reading device includes: a card guide allowing rotation of the card; an infrared light source; a bandpass filter; an imaging means; a watermark pattern image obtaining means; a blocking means; a data conversion amplitude obtaining means; a total amplitude obtaining means; a magnification/reduction rate detection means; a rotation angle detection means; and a data detection means. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
