| 摘要 |
This invention is made for either CAV or zone CAV. A wobble groove is formed continuously beforehand so as to record information in the groove and a land that adjoins the groove, the groove having: a first wobble portion modulated by groove address information; a second wobble portion modulated by address information of one adjoining land; and a third wobble portion modulated by the address information of the other adjoining land. A first segment sandwiched by the second wobble portions of two adjoining grooves, and a second segment sandwiched by the third wobble portions of two adjoining grooves, are formed on the land, and either the phase of the wobble on both sides of the first segment or the phase of the wobble on both sides of the second segment is substantially in-phase. |
