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    11.
    发明专利
    未知

    公开(公告)号：DE60327113D1

    公开(公告)日：2009-05-20

    申请号：DE60327113

    申请日：2003-01-08

    Applicant: PANASONIC CORP

    Inventor： ITO MOTOSHI ,  ISHIDA TAKASHI ,  UEDA HIROSHI ,  YAMAMOTO YOSHIKAZU ,  SHOJI MAMORU

    IPC: G11B7/00 ,  G11B7/007 ,  G11B7/125 ,  G11B7/1267 ,  G11B7/24 ,  G11B7/24038 ,  G11B20/18

    Abstract: A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.

    12.
    发明专利
    未知

    公开(公告)号：DE60326999D1

    公开(公告)日：2009-05-14

    申请号：DE60326999

    申请日：2003-01-08

    Applicant: PANASONIC CORP

    Inventor： ITO MOTOSHI ,  ISHIDA TAKASHI ,  UEDA HIROSHI ,  YAMAMOTO YOSHIKAZU ,  SHOJI MAMORU

    IPC: G11B7/007 ,  G11B5/09 ,  G11B7/00 ,  G11B7/125 ,  G11B7/1267 ,  G11B7/24 ,  G11B7/24038 ,  G11B20/18 ,  H04B17/00

    Abstract: A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.

    15.
    发明专利
    未知

    公开(公告)号：BRPI0806709A2

    公开(公告)日：2011-09-06

    申请号：BRPI0806709

    申请日：2008-11-19

    Applicant: PANASONIC CORP

    Inventor： NAKATA KOHEI ,  KIMUIRA NAOHIRO ,  MIYASHITA HARUMITSU ,  UEDA HIROSHI ,  YAMAMOTO YOSHIKAZU

    IPC: G11B20/12 ,  G11B7/007 ,  G11B20/10

    Abstract: When a recording capacity of an optical disc is increased, the increased part of the addresses cannot be represented by the number of bits used for representing the address information of a conventional optical disc. Hence, an address format capable of representing the increased part of the addresses while being compatible with the conventional address format with the same number of bits is proposed. In an optical disc according to the present invention, a track on which data is recordable is divided into a plurality of blocks, and each block includes L pieces of sub blocks. On each sub block, M-bit first digital information specifying a block address of a block including the each sub block and N-bit second digital information capable of representing a numerical value equal to or larger than L are recorded. Where a value of the block address is smaller than a threshold value, the second digital information represents a value specifying a number pre-assigned to the each sub block; whereas where the value of the block address is equal to or larger than the threshold value, the second digital information represents a value other than the value specifying the number pre-assigned to the each sub block. Or, where the value of the block address is equal to or larger than the threshold value, the second digital information represents the value specifying the number pre-assigned to the each sub block; whereas where the value of the block address is smaller than the threshold value, the second digital information represents a value other than the value specifying the number pre-assigned to the each sub block.

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