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    Optical disc, optical disc recording method, optical disc reproduction method, optical disc device and storage system
    1.
    发明授权
    Optical disc, optical disc recording method, optical disc reproduction method, optical disc device and storage system 有权
    光盘，光盘记录方法，光盘再现方法，光盘装置和存储系统

    公开(公告)号：US08789618B2

    公开(公告)日：2014-07-29

    申请号：US13180619

    申请日：2011-07-12

    申请人： Shinji Fujita ,  Osamu Kawamae ,  Masaaki Kurebayashi ,  Manabu Katsuki

    发明人： Shinji Fujita ,  Osamu Kawamae ,  Masaaki Kurebayashi ,  Manabu Katsuki

    IPC分类号： G06F12/14

    CPC分类号： G06F21/10 ,  G06F21/72 ,  G06F21/80 ,  G06F2221/2129

    摘要： A storage system having a plurality of optical disc devices allows other optical disc devices inside the storage system to reproduce the optical disc recorded by a certain optical disc device but inhibits optical disc devices outside the storage system to reproduce the optical disc. A device key as a base for generating an encryption key is common to the plurality of optical disc devices. In the optical disc devices, a guest key other than the device key can be used temporarily to generate the encryption key. An authentication list containing a reproduction condition is recorded with the key information to the optical disc.

    摘要翻译： 具有多个光盘装置的存储系统允许存储系统内的其他光盘装置再现由某个光盘装置记录的光盘，但是禁止存储系统外的光盘装置再现光盘。 作为用于生成加密密钥的基础的设备密钥对于多个光盘设备是公共的。 在光盘装置中，可以临时使用除设备密钥以外的客人密钥来生成加密密钥。 将包含再现条件的认证列表与密钥信息一起记录到光盘。

    Recording quality evaluation method of optical disk and optical disk storage system
    2.
    发明授权
    Recording quality evaluation method of optical disk and optical disk storage system 失效
    光盘和光盘存储系统的记录质量评估方法

    公开(公告)号：US08416660B2

    公开(公告)日：2013-04-09

    申请号：US12977975

    申请日：2010-12-23

    申请人： Masaaki Kurebayashi ,  Shinji Fujita ,  Osamu Kawamae

    发明人： Masaaki Kurebayashi ,  Shinji Fujita ,  Osamu Kawamae

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00458 ,  G11B7/268

    摘要： There is provided a method of calculating the degradation over time of the quality of data recorded on an optical disk in a short time. In the method, when user data is recorded on a data area, a test signal including a component in which the signal level is smaller than a reference value, is recorded on a test area. Then, the test signal is reproduced from the test area when a predetermined time has passed, to calculate the quality degradation of the user data from the evaluation result. Alternatively, every time when the user data is recorded/reproduced on/from the data area, the test signal is recorded/reproduced repeatedly on/from the test area. Then, the test signal is reproduced from the test area at a predetermined timing, to calculate the quality degradation of the user data from the evaluation result.

    摘要翻译： 提供了一种在短时间内计算在光盘上记录的数据的质量随着时间的劣化的方法。 在该方法中，当用户数据被记录在数据区域时，包括信号电平小于参考值的分量的测试信号被记录在测试区域上。 然后，当经过预定时间时，从测试区再现测试信号，从评估结果计算用户数据的质量下降。 或者，每当在数据区上记录/再现用户数据时，测试信号被重复地记录/再现在测试区域上。 然后，在预定定时从测试区域再现测试信号，从评估结果计算用户数据的质量劣化。

    Control device, update method and control software
    4.
    发明授权
    Control device, update method and control software 失效
    控制装置，更新方法和控制软件

    公开(公告)号：US08103878B2

    公开(公告)日：2012-01-24

    申请号：US12098625

    申请日：2008-04-07

    申请人： Osamu Kawamae

    发明人： Osamu Kawamae

    IPC分类号： H04L9/32 ,  H04L29/06 ,  G06F12/14 ,  G06F11/30 ,  G06F9/44

    CPC分类号： H04L9/3247 ,  G06F21/64 ,  H04L2209/605

    摘要： To update the program, the file is updated by verifying according to a digital signature attached to the file having the program converted whether the file is not dishonestly falsified. To verify the digital signature, a time for verifying the signature can be shortened by verifying not the entire file but only a particularly important part, and an area for temporarily storing the file can be made small. Thus, the control can be performed to update only when the file is valid.

    摘要翻译： 为了更新程序，通过根据附带有程序转换的文件的数字签名来验证文件是否被不诚实地伪造来更新文件。 为了验证数字签名，可以通过验证不是整个文件而仅仅是特别重要的部分来缩短验证签名的时间，并且可以使用于临时存储文件的区域较小。 因此，只有当文件有效时，才能执行控制更新。

    Method of recording/reproducing digital data and apparatus for same
    7.
    发明授权
    Method of recording/reproducing digital data and apparatus for same 有权
    用于记录/再现数字数据的方法及其装置

    公开(公告)号：US07747910B2

    公开(公告)日：2010-06-29

    申请号：US12180450

    申请日：2008-07-25

    申请人： Taku Hoshizawa ,  Shigeki Taira ,  Osamu Kawamae

    发明人： Taku Hoshizawa ,  Shigeki Taira ,  Osamu Kawamae

    IPC分类号： G06F11/00

    CPC分类号： H03M13/2732 ,  G11B20/18 ,  G11B20/1803 ,  G11B20/1866 ,  H03M13/03 ,  H03M13/271 ,  H03M13/29

    摘要： A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recording/reproducing method increases correction capability against several bytes to several tens bytes of errors generated at random without changing burst error correction length by performing this processing for respective PI codes by using interleave rules that are different as much as possible from one another.

    摘要翻译： 数字数据记录/再现方法包括以下步骤：对208行ECC块的每个PI代码的PI代码交织数据; 并通过在PI代码上分散错误将短突发错误转换为随机错误。 此外，数字数据记录/再现方法通过使用尽可能不同的交错规则，通过对各个PI代码执行该处理，从而增加了随机产生的几个字节到几十个字节的纠错能力，而不改变突发错误校正长度 另一个。

    Data production method and apparatus
    10.
    发明申请
    Data production method and apparatus 失效
    资料制作方法及装置

    公开(公告)号：US20070198842A1

    公开(公告)日：2007-08-23

    申请号：US11634962

    申请日：2006-12-07

    申请人： Osamu Kawamae ,  Eijiro Tazawa

    发明人： Osamu Kawamae ,  Eijiro Tazawa

    IPC分类号： H04L9/00

    CPC分类号： H04K1/00 ,  G11B20/00086 ,  G11B20/00268 ,  G11B20/00405 ,  G11B20/00601 ,  G11B20/00768 ,  G11B20/00884 ,  G11B2220/2541

    摘要： A watermark information detection process prevents prolonging of time required for setup process when no watermark information can be detected from an optical disc where watermark information has been recorded. During a setup, the number of retrials is limited. Weighting of the retrial is changed so that detection of watermark information is performed when it is confirmed that watermark information is recorded. This enables detection of information for copyright protection in an appropriate processing time.

    摘要翻译： 水印信息检测处理防止当从已经记录了水印信息的光盘检测不到水印信息时，可以延长设置处理所需的时间。 在设置过程中，重试次数有限。 改变重试的加权，使得当确认水印信息被记录时，执行水印信息的检测。 这使得能够在适当的处理时间内检测用于版权保护的信息。