Patent ID: 7415636
Filing Date: 2008-08-19
Classification: G11B

Abstract:
1. A replacement processing apparatus that performs a write-access of a recording medium in response to access request from a higher-level apparatus, the replacement processing apparatus comprising: a writing unit that writes data into a write location on the recording medium according to the write-access and, when writing is not successful, rewrites the data into the write location; a storing unit that, when rewriting by the writing unit is successful, stores rewrite location information indicating the write location where the data is successfully rewritten; an error detecting unit that tries a plurality of read accesses to the write location indicated by the rewrite location information to detect whether a read error recurs a plurality of times; and a replacement processing unit that performs, when the error detecting unit detects that the read error recurs a plurality of times, a replacement processing for the write location.