Spare and calibration sector management for optical WORM media
    43.
    发明授权
    Spare and calibration sector management for optical WORM media 失效
    光学WORM媒体的备件和校准部门管理

    公开(公告)号:US5548572A

    公开(公告)日:1996-08-20

    申请号:US414825

    申请日:1995-03-31

    摘要: The present invention provides efficient management of calibration and spare sectors on a banded optical write-once, read-many (WORM) disk. A portion of each band on the disk includes a user data area and a reserved area. Sectors in the reserved area are usable either as spare sectors, replacing defective sectors in the user area, or as calibration sectors, for use when the laser write-power level is calibrated. Sectors preferably are used for sparing from one end of the reserved area while sectors are used for calibration from the opposite end. A common overflow reserved area can also be provided for use if all of the sectors in one or more primary reserved areas associated with any of the bands have been exhausted.

    摘要翻译: 本发明提供了有条件的光写一次读取(WORM)盘的校准和备用扇区的有效管理。 磁盘上的每个频带的一部分包括用户数据区和保留区。 保留区域中的扇区可用作备用扇区,替换用户区域中的有缺陷扇区,或用作校准扇区,用于校准激光写入功率电平时使用。 扇区优选地用于从保留区域的一端备用,而扇区用于从相对端进行校准。 如果与任何频带相关联的一个或多个主保留区域中的所有扇区已经被耗尽,则还可以提供公共溢出保留区域以供使用。