Patent ID: 6701413
Filing Date: 2004-03-02
Classification: G11B

Abstract:
A disk drive comprising a reproducing part connected to a host device via an interface for reproducing data recorded on a disk, a buffer memory for storing said reproduced data, and a control part for causing said reproducing part to reproduce data in accordance with an address contained in a data read signal supplied from said host device, and for transferring said reproduced data to said host device after temporarily storing said reproduced data in said buffer memory, said disk drive characterized by the provision of:a read-ahead processing part for performing a read-ahead operation by sequentially reading ahead data from addresses starting at the address that immediately follows the address contained in said data read signal supplied from said host device; an error occurrence detecting part for detecting the occurrence of an error during said read-ahead operation; an error occurrence reporting part for suspending, when the occurrence of an error is detected, said read-ahead operation at the address at which said error occurred, and for reporting the occurrence of said error to said host device; and a read-ahead operation resume instructing part for instructing, upon receiving a prescribed command from said host device after reporting the occurrence of said error to said host device, said read-ahead processing part to resume said read-ahead operation from the address at which said read-ahead operation was suspended.