Patent ID: 7188299

Claim:
A data-recording/reproduction apparatus for recording data onto a disk-shaped recording medium including concentric recording tracks, each track divided into sectors by splitting said data into predetermined quantities to be recorded onto one of said sectors, each sector used as a minimum access unit, and for reproducing said data from said disk-shaped recording medium, said data-recording/reproduction apparatus comprising: recording/reproduction means for recording and reproducing data onto and from said disk-shaped recording medium; transport means for transporting said recording/reproduction means to a predetermined one of said recording tracks on said disk-shaped recording medium; access control means for executing control to access data of an amount equivalent to one recording track by starting said access from a one of said sectors existing in said predetermined recording track as a first sector accessible to said recording/reproduction means transported to said predetermined recording track; first error-correction-code generation means for generating a first error correction code for correcting an error generated in a corresponding sector of said accessed data; and second error-correction-code generation means for generating a second error correction code for correcting an error generated over a plurality of sectors of said predetermined recording track, wherein only one error correction code block including said generated first error correction code and said generated second error correction code is generated for each of said recording tracks.