Patent ID: 6043945
Filing Date: 2000-03-28
Classification: G11B

Abstract:
A device for recording and reproducing data to and from recording media, said device comprising:error detecting means for detecting an error in sectors of the media by reading data from the media;data copying means for applying data correction to data of a sector suffering the error to generate recovered data and for writing in at least one temporary replacing sector said recovered data when said data of said sector is correctable and said data of said sector when said data of said sector is uncorrectable, said at least one temporary replacing sector being provided on the media;test means for testing whether said sector has a media defect;replacement means for copying data of said at least one temporary replacing sector to a spare sector when said test means detects said media defect in said sector, and back to said sector when said test means does not detect said media defect in said sector;progress writing means for recording progress of operations of said data copying means, said test means, and said replacement means by writing the progress of operations step-by-step in the media; andinterface control means for controlling an interface with a host which is connected to said device such that said operations proceed independently of said host.