Patent ID: 6025966
Filing Date: 2000-02-15
Classification: G11B

Abstract:
A method of performing an operation to a target logical sector in a storage device having multiple media surfaces rotating in unison and a plurality of transducers carried by an actuator for movement in unison into read/write alignment with respective data tracks on the media surfaces, each data track comprising a alignment with respective data tracks on the media surfaces, each data track comprising a plurality of physical sectors, wherein the data tracks are accessed by the transducers when the actuator is at a given position from a cylinder, the method comprising the steps of:generating a track defect list comprising a physical sector defect record for each of a set of defective physical sectors, the set of defective physical sectors being comprised in the plurality of physical sectors, the physical sector defect records comprising defect management information for the defective physical sectors, the step of generating the track defect list comprising the step of generating defect management information according to one of a plurality of predetermined defect management schemes comprising at least a sector slipping method and circular slipping methods;storing the track defect list in a memory circuit, the memory circuit storing a plurality of the physical sector defect records;translating a physical sector number to a logical address according to the track defect list stored in the random access memory circuit by retrieving the sector defect records into a FIFO from the random access memory circuit and processing the track defects records retrieved into the FIFO;comparing the logical address to the target logical sector to determine whether the physical sector number corresponds to the target logical sector; andsynchronizing with a sync field of the target logical sector and performing the operation.