| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a portable recording medium, a control method of the portable recording medium and a control program of the portable recording medium capable of identifying non-contact communication interfaces of various non-contact card reader-writers including JIS X 6319-4 or the like popular in Japan as a de facto standard. <P>SOLUTION: The portable recording medium includes: an antenna circuit 11 for detecting a non-modulated waveform and receiving a request signal subsequent to the non-modulated waveform; a memory 16 for storing a physical amount of the non-modulated waveform detected by the antenna circuit, a physical amount indicating a feature point of a modulated waveform of after a start of transmission of the request signal, and multiple threshold values respectively set for the multiple non-contact communication interfaces; and a signal processing part 15 for distinguishing a predetermined non-contact interface from the multiple non-contact interfaces, on the basis of the physical amount of the non-modulated waveform, the physical amount indicating the feature point of the modulated waveform of after the start of the transmission of the request signal, and the multiple threshold values, stored in the memory. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
