Patent ID: 7599274

Claim:
A recording medium including recorded data, comprising: a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area; and a main data area including a main data recorded with modulation in straight pits formed along tracks, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and the straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of the main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period.