Patent ID: 7200072
Filing Date: 2007-04-03
Classification: G11B

Abstract:
1. A recording/reproducing apparatus for a domain-wall-displacement magneto-optical recording medium for recording or reproducing an information by irradiating a light beam to a data region subsequent to a preformat region, comprising: a recording circuit that starts recording of an information in the data region at a predetermined timing with a detection signal obtained in the preformat region being used as a reference; and a reproducing circuit that starts reproducing of the information recorded in the data region at a timing earlier than the predetermined timing with the detection signal being used as a reference, wherein a sector mark (SM), a fixed pattern (VFO section) for extracting a clock when detecting an address, an address mark (AM), and an address pit are formed in the preformat region; a fixed pattern (VFO section) for extracting a clock when reproducing the information and a SYNC mark for attaining byte synchronization are formed in the data region; and the timing is measured by a clock with a fixed frequency or a clock generated on the basis of a VFO pattern of the data region with a detection signal obtained in the preformat region being used as a reference.