| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-dimensional pattern setup method which is suitable for information recording and reproducing using a hologram recording medium. SOLUTION: A two-dimensional pattern including information to be recorded and a crosstalk detection symbol is generated as a physical page to be recorded as an element hologram. That is, each element hologram has a crosstalk detection symbol of a specified kind assigned to the element hologram according to the position in an arrangement. Particularly, different crosstalk detection symbols are given to adjacent element holograms. Upon reproducing, a tracking status can be judged from a reproduced image of the crosstalk detection symbol. COPYRIGHT: (C)2007,JPO&INPIT |
