Optical disk device method for detecting and replacing a defective sector within a block containing recording data and error correction data on an optical disk

An optical disk device for recording data on an optical disk, the optical disk having tracks arranged in a concentric or spiral form for recording data using a format for recording the data into a plurality of successive sector areas, each sector area having a preset track length and including an address field for recording address data indicating a position on the track and a recording field for recording a portion of the recording data, wherein the recording data is recorded on the optical disk in units of one block area, each block area containing a preset number of sector areas among said plurality of sector areas and including an error correction data recording area in which error correction data items used for reproducing data recorded in said preset number of sector areas are collectively recorded, and wherein each of said sector areas has a plural-byte configuration, the device comprising:

• first recording means for recording the portion of the recording data and error correction data into said recording field of each of said sector areas of said optical disk at at a time at which the optical disk is manufactured or at an initial time, such as an application starting time;
• reproducing means for reproducing the address data in said address field and the recording data and the error correction data recorded by said first recording means in units of one sector area;
• determining means for detecting a defective sector area when address data in said address field cannot be reproduced at a reproduction time by said reproducing means or when a number of error bytes exceeds a specified value;
• second recording means for recording the address data of the defective sector area detected by said determining means;
• and
• third recording means for successively recording the recording data and the error correction data into a plurality of successive block areas on said optical disk, and skipping over the defective sector area in units of one sector area based on the address data recorded by said second recording means and then recording the portion of the recording data and the error correction data into a next sector area when the recording data and the error correction data are sequentially recorded into said plurality of sector areas in each of said block areas.

A replacement processing method for an optical disk, the optical disk having tracks arranged in a concentric or spiral form for recording data using a format for recording the data into a plurality of successive sector areas, each sector area having a preset track length and including an address field for recording address data indicating a position on the track and a recording field for recording a portion of a recording data, wherein the recording data is recorded on the optical disk in units of one block area, each block area containing a preset number of sector areas among said plurality of sector areas and including an error correction data recording area in which error correction data items used for reproducing data recorded in said preset number of sector areas are collectively recorded, and wherein each of said sector areas has a plural-byte configuration, the method comprising:

• successively recording the recording data and error correction data into a plurality of successive block areas on said optical disk;
• sequentially recording the recording data and error correction data into said plurality of sector areas in each of said block areas at a time other than a time at which the optical disk is manufactured or an initial time, such as an application starting time;
• reproducing the recording data, the error correction data and the address data recorded in said sector areas for each of said block areas;
• detecting a defective block area having a defective sector area when the address data in said address field cannot be reproduced at a reproduction time, where a number of error bytes in one sector area exceeds a first specified value, where the number of error bytes in one sector area is not larger than the first specified value and exceeds a second specified value and a number of error bytes in one block area exceeds a third specified value, or where a number of sector areas in which the number of error bytes is not larger than the first specified value and exceeds the second specified value exceeds a fourth specified value in one block area;
• and
• recording the recording data and the error correction data in a block area that is different from the defective block area containing the defective sector area.

An optical disk device for recording data on an optical disk, the optical disk having tracks arranged in a concentric or spiral form for recording data using a format for recording the data into a plurality of successive sector areas, each sector area having a preset track length and including an address field for recording address data indicating a position on the track and a recording field for recording a portion of recording data, wherein the recording data is recorded on the optical disk in units of one block area, each block area containing a preset number of sector areas among said plurality of sector areas and including an error correction data recording area in which error correction data items used for reproducing data recorded in said preset number of sector areas are collectively recorded, and wherein each of said sector areas has a plural-byte configuration, the device comprising:

• first recording means for successively recording the recording data and error correction data into a plurality of successive block areas on said optical disk and sequentially recording the recording data and the error correction data into said plurality of sector areas in each of said block areas at a time other than a time at which the optical disk is manufactured or an initial time, such as an application starting time;
• reproducing means for reproducing the recording data, the error correction data and the address data recorded in said sector areas for each of said block areas by said first recording means;
• determining means for detecting a defective block area having a defective sector area when the address data in said address field cannot be reproduced at a reproduction time, when a number of error bytes in one sector area exceeds a first specified value, when the number of error bytes in one sector area is not larger than the first specified value and exceeds a second specified value and a number of error bytes in one block area exceeds a third specified value, or where the number of sector areas in which the number of error bytes is not larger than the first specified value and exceeds the second specified value exceeds a fourth specified value in one block area;
• and
• second recording means for recording the recording data and the error correction data in a block area that is different from the block area containing the defective sector area.