| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the safety of erasure or update or the like of data recorded in a recording medium, and to improve the convenience of the recording medium. <P>SOLUTION: In this information processor, a writing control part 63 writes content data into a data recording area of a memory 42. A history information management part 65 produces history information for managing a history of reading-out of the content data stored in the memory 42, and the writing control part 63 writes the produced history information into a history information recording area of the memory 42. When the content data recorded in the memory 42 is read by a reading part 64, the writing control part 63 updates the history information of the read content data. The information processor can be applied to a data input/output device, for example. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
