Information recording/reproducing apparatus
View Patent ↗A determining unit retrieves status information relating to recording or reproducing data on the magnetic disk, and determines whether to re-record data recorded in a recording area on the magnetic disk based on the retrieved status information. When the determining unit determines to re-record first data recorded in a first recording area, a re-recording unit re-records at least one of the first data and second data recorded in a second recording area near the first recording area on the magnetic disk.
1. An apparatus for recording or reproducing data on a magnetic disk that employs a perpendicular magnetic recording and includes a recording area and a monitor area storing data of a neighboring area of the recording area, the apparatus comprising:
a determining unit that retrieves status information relating to recording or reproducing data on the recording area, and determines whether to re-record data recorded in the neighboring area based on the retrieved status information; and
a re-recording unit that re-records data recorded in the neighboring area by retrieving data of the neighboring area from the monitor area, when the determining unit determines to re-record, and resets the status information corresponding to the recording area,
wherein the re-recording unit includes a temporary storing unit that stores the data recorded in the monitor area whose address is spaced from both the recording area and the neighboring area to be re-recorded in a place other than on the magnetic disk until re-recording.
2. The apparatus according to claim 1 , wherein
the status information is a record count of the data in the recording area, and
when the record count is equal to or more than a predetermined threshold, the re-recording unit re-records the data recorded in the neighboring area.
3. The apparatus according to claim 1 , wherein
the status information is an error rate of the data in the recording area, and
when the error rate is equal to or more than a predetermined threshold, the re-recording unit re-records the data recorded in the neighboring area.
4. The apparatus according to claim 1 , wherein
the status information is a magnetic field strength of the recording area, and
when the magnetic field strength is less than a predetermined threshold, the re-recording unit re-records the data recorded in the neighboring area.
5. A method of recording or reproducing data on a magnetic disk that employs a perpendicular magnetic recording and includes a recording area and a monitor area storing data of a neighboring area of the recording area, the method comprising:
determining including
retrieving status information relating to recording or reproducing data on the recording area; and
determining whether to re-record data recorded in the neighboring area based on the retrieved status information; and
re-recording including
storing data recorded in the monitor area whose address is spaced from both the recording area and the neighboring area to be re-recorded in a place other than on the magnetic disk until re-recording when it is determined to re-record at the determining step;
re-recording the data temporarily stored at the storing step to the neighboring area; and
resetting the status information corresponding to the recording area.
6. The method according to claim 5 , wherein
the status information is a record count of the data in the recording area, and
when the record count is equal to or more than a predetermined threshold, the storing includes storing the data recorded in the monitor area.
7. The method according to claim 5 , wherein
the status information is an error rate of the data in the recording area, and
when the error rate is equal to or more than a predetermined threshold, the storing includes storing the data recorded in the monitor area.
8. The method according to claim 5 , wherein
the status information is a magnetic field strength of the recording area, and
when the magnetic field strength is less than a predetermined threshold, the storing includes storing the data recorded in the monitor area.