光ディスクに付着した白濁状物質のドライブ再生特性への影響

概要

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We sometimes see a large cloud on optical disks that have been left for a long time in ordinary atmosphere. The higher the recording-density of the optical disk, the smaller the recorded size of each mark, the adhesion cannot be ignored for the drive performance. We used (NH_4)_2SO_4 to represent the cloud and a test apparatus to investigate the relationship between the optical disk conpound and the adhesion of (NH_4)_2SO_4. We showed the relationship between the adhesion and the read error rate, and discussed the influence of disk surface cloud on disk drive performance. Sector errors and ECC errors appeared when the adhesion was more than 2% when the drive system used error correction code of RSPC (Inner code (182,172,11), Outer code (208,192,17)).
社団法人映像情報メディア学会の論文
2004-12-01