| 摘要 |
PURPOSE:To hasten access speed even with any CD-ROM disk reproducing system by adding the difference between a main address and a subaddress to the subaddress and executing the access by the subaddress. CONSTITUTION:For example, when the subaddress is held besides a block address given for a data block like CD-ROM and by using these two pieces of address information, the data are accessed, the difference between the read subaddress and the main address is the absolute error of both addresses, and approximately constant when recording media are the same. Consequently, by adding the error difference of both addresses to the address of a subcode and executing the access, the access can be executed to the position close to the address of a purpose at the time of the completion of a large access, and the access speed can be hastened. The variance of the difference between both addresses for a disk is also corrected and the access can be executed approximately at the same access speed by any disk as well.
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