Patent ID: 6269068
Filing Date: 2001-07-31
Classification: G11B

Abstract:
An optical disk comprising a plurality of tracks each divided into a plurality of recording sectors, wherein:each of the plurality of recording sectors includes a header region, the header region includes a plurality of address regions, and each of the address regions includes an address information region and a postamble region which is provided following the address information region;address information for identifying a position of a corresponding one of the recording sectors is recorded in the address information region, the address information being information which is obtained by state modulating each data of a plurality of data based on a corresponding one of a plurality of states;information indicating a next state, to which a state which has been used to modulate a last one of the plurality of data is to transition, is recorded in the postamble region;the information indicating the next state includes a specific bit having a predetermined value;at least one bit of bits which are adjacent to the specific bit has a value which is identical to the predetermined value of the specific bit; anda VFO region is provided at the beginning of each of the address regions, and non-pit data or a space is located at the beginning of the VFO region.