Patent ID: 6633516
Filing Date: 2003-10-14
Classification: G11B

Abstract:
An access method of an optical disc, which is divided into a plurality of zones in a radius direction, and on both of a land track and a groove track of which data can be accessed, and further on which pieces of address information are recorded so that a same piece of address information can be used for any track of the land track and the groove track: whereinsaid pieces of address information being recorded so that they are successively continuous addresses in each zone and they are discontinuous in order that an address jumping by addresses of a previous zone in an access order thereof becomes a forefront address of a zone next to the previous zone at a beginning of the zone next to the previous zone, said method comprising the steps of: performing access to either of the land track and the groove track by means of the pieces of address information in each zone; returning to a first address position in a zone after an address in the either track becomes a last address of the zone; performing the access by recognizing an address being continued from a last address of the either track suppositionally on the pieces of address information as an address of another track of the land track and the groove track; and moving to a next zone after the address of the other track becomes a last address of the zone.