Invention Grant
US08732395B2 Write-once information recording medium, information recording method, information recording device, information reproduction method, information reproduction device and method for manufacturing information recording medium 有权
一次写入信息记录介质,信息记录方法,信息记录装置,信息再现方法,信息再现装置和用于制造信息记录介质的方法

  • Patent Title: Write-once information recording medium, information recording method, information recording device, information reproduction method, information reproduction device and method for manufacturing information recording medium
  • Patent Title (中): 一次写入信息记录介质,信息记录方法,信息记录装置,信息再现方法,信息再现装置和用于制造信息记录介质的方法
  • Application No.: US13392937
    Application Date: 2010-09-16
  • Publication No.: US08732395B2
    Publication Date: 2014-05-20
  • Inventor: Hisae KatoYoshihisa TakahashiMotoshi Ito
  • Applicant: Hisae KatoYoshihisa TakahashiMotoshi Ito
  • Applicant Address: JP Osaka
  • Assignee: Panasonic Corporation
  • Current Assignee: Panasonic Corporation
  • Current Assignee Address: JP Osaka
  • Agency: Renner, Otto, Boisselle & Sklar, LLP
  • Priority: JP2009-219543 20090924
  • International Application: PCT/JP2010/005668 WO 20100916
  • International Announcement: WO2011/036859 WO 20110331
  • Main IPC: G06F12/00
  • IPC: G06F12/00
Write-once information recording medium, information recording method, information recording device, information reproduction method, information reproduction device and method for manufacturing information recording medium
Abstract:
In an information recording medium in which storage capacity per recording layer has increased so much that the size of an SBM varies with those of spare areas, there is mutual dependence between a DDS and an SBM and it is difficult to retrieve disc management information as intended. In an information recording medium according to the present invention, if the largest space is allocated to an user data area, the number of blocks to store a space bitmap is Ni (where Ni≧2). But if the smallest space is allocated to the user data area, the number of blocks to use is smaller than Ni. In such an information recording medium, if the number of blocks to store the space bitmap of a recording layer is Mi (where 1≦Mi≦Ni) and if Mi is equal to or greater than two, the space bitmap is divided into the 1st through Mith space bitmaps, each of which has a size that is still equal to or smaller than one block even when combined with a DDS, and each space bitmap is stored in an associated one of Mi blocks in a disc management area.
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