Target track seeking for data recording and reproducing system
AssigneeSony Corporation
InventorsToshiyuki Nakagawa, Hiroaki Eto
Life of this patent
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Abstract
An object of the present invention is to record or reproduce time-sequential data to/from recording media exemplified by hard disks at the transfer speed closer to that of the recording medium.
Claims16
A data recording/reproducing system for a disk recording medium in which tracks are concentrically formed and each having a plurality of sectors, servo regions are radially oriented at predetermined positions on each of the tracks, and servo frames are formed on the tracks with the sectors placed between the servo regions, the system comprising:
- seek means for seeking a target track;
- data access means for making an access on the found track;
- and
- error correction means for generating an error correction code for data error correction, and carrying out the data error correction based on the error correction code, wherein
- the error correction means sets a first error correction code unit to a given amount of data, sets a second error correction code unit that is corresponding to two or more of the first error correction code units, forms an error correction block including two or more of the first error correction code units and the second error correction code unit provided thereto, and generates the error correction block so that at least one of the sectors each provided with the second error correction code unit is located in the servo frame at a head sector from which the data access means first starts reading when the seek means moves onto a specific track of the recording medium.
A data recording/reproducing method for a disk recording medium in which tracks are concentrically formed and each having a plurality of sectors, servo regions are radially oriented at predetermined positions on each of the tracks, and servo frames are formed on the tracks with the sectors placed between the servo regions, the method comprising:
- seeking a target track;
- accessing the found track;
- and
- generating an error correction code for data error correction, and carrying out the data error correction based on the error correction code, wherein the generating an error correction code sets a first error correction code unit to a given amount of data, sets a second error correction code unit that is corresponding to two or more of the first error correction code units, forms an error correction block including two or more of the first error correction code units and the second error correction code unit provided thereto, and generates the error correction block so that at least one of the sectors each provided with the second error correction code unit is located in the servo frame at a head sector from which the accessing the found track first starts reading when the seeking a target track reaches a specific track of the recording medium.
A computer readable storage medium encoded with a computer readable program for executing on a computer system a data recording/reproducing process with respect to a disk recording medium in which tracks are concentrically formed and each having a plurality of sectors, servo regions are radially oriented at predetermined positions on each of the tracks, and servo frames are formed on the tracks with the sectors placed between the servo regions, configured to cause an information processing apparatus to execute a method, the method comprising:
- seeking a target track;
- accessing the found track;
- and
- generating an error correction code for data error correction, and carrying out the data error correction based on the error correction code;
- and
- storing in a memory the error correction code for data error correction, wherein
- the generating an error correction code sets a first error correction code unit to a given amount of data, sets a second error correction code unit that is corresponding to two or more of the first error correction code units, and form an error correction block including two or more of the first error correction code units and the second error correction code unit provided thereto, and generates the error correction block so that at least one of the sectors each provided with the second error correction code unit is located in the servo frame at a head sector from which the accessing the found track first starts reading when the seeking a target track reaches a specific track of the recording medium.
Dependencies are inferred from the claim text.