Patent ID: 6625096
Filing Date: 2003-09-23
Classification: G11B

Abstract:
An optical disk recording and reproduction method for an optical disk recording and reproduction apparatus which includes an optical head section for recording and reading out data onto and from an optical disk, a tracking section for positioning said optical head section on a track of the optical disk, a control section for controlling operation of said optical head section and said tracking section in response to a command from a host apparatus, and a memory for temporarily recording data necessary for the control by said control section, comprising the steps of:causing, if a read error occurs upon reading out of data from a first address of the optical disk by said optical head section, said optical head section to perform retrying of the reading out of the first address of:the optical disk and recording a number of times of retrying into said memory each time such retrying is performed; reading out, if the reading out from the first address is performed successfully, the number of times of retrying recorded in said memory, comparing the read out number of times of retrying with a prescribed number of times and, if the number of times of retrying exceeds the prescribed number of times, securing an alternate second address in place of the first address on the optical disk; and copying, when said optical disk recording and reproduction apparatus is performing none of reading processing and writing processing for the optical disk, the data read out from the first address to the second address and rewriting a defect management area of the optical disk so that, when a read command for the first address is received from said host apparatus thereafter, the data may be read out from the second address.