| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information recording apparatus and a program capable of improving the information recording density for a recording medium, and an information reading apparatus and a program capable of reading the information from the recording medium on which the information is recorded by them. <P>SOLUTION: The information recording apparatus generates an array comprising a prescribed number of three or more codes for expressing the information to be recorded in a recording area (31) of the recording medium (3). Each of the codes is sequentially recorded while shifting the recording position thereof, by providing one of the states of the prescribed number of kinds corresponding to the codes to each recording position. The information reading apparatus determines which of the prescribed number of three or more kinds indicates the state provided to each reading position, while shifting the reading position for the recording area (31), and generates the information recorded in the recording area (31) on the basis of the result. <P>COPYRIGHT: (C)2009,JPO&INPIT |
