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    • 6. 发明申请
    • Optical disk drive and method for allocating spare area on optical disk medium
    • 光盘驱动器及其在光盘介质上分配备用区的方法
    • US20060140093A1
    • 2006-06-29
    • US11290378
    • 2005-11-29
    • Kenji AkahoshiTaku Hoshizawa
    • Kenji AkahoshiTaku Hoshizawa
    • G11B5/09G11B7/00
    • G11B20/1883G11B20/00086
    • On an optical disk medium, a spare area is allocated separately from a recording area. If the recording area includes a defective sector, alternate recording for the defective sector is performed in the spare area. An optical disk drive comprises: a medium information acquisition part which acquires, from the optical disk medium, medium information specific to the medium; and an area size determination part which determines the spare-area size suitable for the medium on the basis of the acquired medium information. The medium information is information about, for example, a media manufacturer, and a media type number. Further, there is provided a table which stores the relationship between the medium information and the optimum size of the spare area.
    • 在光盘介质上,与记录区分开分配备用区。 如果记录区域包括缺陷扇区,则在备用区域中执行用于缺陷扇区的备用记录。 光盘驱动器包括:介质信息获取部分,从光盘介质获取介质特有的介质信息; 以及区域尺寸确定部,其基于所获取的介质信息来确定适合于介质的备用面积尺寸。 介质信息是关于例如媒体制造商和媒体类型号的信息。 此外,提供了存储介质信息与备用区域的最佳尺寸之间的关系的表。
    • 10. 发明授权
    • Recording and reproducing apparatus and method
    • 记录和再现装置和方法
    • US08611194B2
    • 2013-12-17
    • US12609822
    • 2009-10-30
    • Kenji Akahoshi
    • Kenji Akahoshi
    • G11B7/00
    • G11B7/00375G11B7/00736G11B20/1883G11B2020/1826G11B2220/20
    • The invention solves the problem that data cannot be recorded on a disc because the number of registered Defect Lists (DFLs) has reached a limit and the problem that the access performance is reduced at recording data reproduction time. A cluster, which is normally reproduced during verification processing and is preceded and followed by one or more defective blocks, is also treated as a defective block and, together with the preceding and following defective clusters, recorded in an spare area for extending the range in which clusters are registered as Contiguous Re-allocated Defect (CRD) entries. This reduces the number of DFLs to solve the problem that data cannot be recorded on the disc and, in addition, reduces the number of seek operations to prevent the access performance from being reduced at reproduction time.
    • 本发明解决了由于注册的缺陷列表(DFL)的数量已经达到限制,并且在记录数据再现时间时访问性能降低的问题,数据不能被记录在盘上的问题。 通常在验证处理期间再现并且在一个或多个缺陷块之前和之后的集群也被视为缺陷块,并且与先前的和随后的有缺陷的集群一起被记录在备用区中,以将扩展范围扩展 哪些集群被注册为连续重新分配缺陷(CRD)条目。 这减少了DFL的数量以解决数据不能被记录在盘上的问题,并且另外减少了寻找操作的次数,以防止访问性能在再现时被减少。