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    • 4. 发明公开
    • METHOD FOR DATA PRIVACY IN A FIXED CONTENT DISTRIBUTED DATA STORAGE
    • VERFAHRENFÜRDATENSCHUTZ BEI VERTEILTER DATENSPEICHERUNG FESTER INHALTE
    • EP2147517A4
    • 2014-08-27
    • EP08769315
    • 2008-05-07
    • HITACHI DATA SYSTEMS CORP
    • SHAW DAVID M
    • H04L9/08G11B20/00H04L29/06
    • H04L63/0428G06F21/6218G06F21/79G11B20/00086G11B2220/41H04L9/085H04L9/0897H04L63/0414H04L63/062H04L2209/60
    • An archival storage cluster of preferably symmetric nodes includes a data privacy scheme that implements key management through secret sharing. In one embodiment, the protection scheme is implemented at install time. At install, an encryption key is generated, split, and the constituent pieces written to respective archive nodes. The key is not written to a drive to ensure that it cannot be stolen or otherwise compromised. Due to the secret sharing scheme, any t of the n nodes must be present before the cluster can mount the drives. Thus, to un-share the secret, a process runs before the cluster comes up. It contacts as many nodes as possible to attempt to reach a sufficient t value. Once it does, the process un-shares the secret and mounts the drives locally. Given bidirectional communication, this mount occurs more or less at the same time on all t nodes. Once the drives are mounted, the cluster can continue to boot as normal.
    • 优选对称节点的归档存储簇包括通过秘密共享实现密钥管理的数据隐私方案。 在一个实施例中,保护方案在安装时实现。 在安装时,将生成一个加密密钥,将其分割,并将组成部分写入相应的归档节点。 关键不是写入驱动器,以确保它不能被盗或以其他方式受到损害。 由于秘密共享方案,在集群可以安装驱动器之前,n个节点中的任何一个都必须存在。 因此,为了不共享秘密,一个进程在集群启动之前运行。 它联系尽可能多的节点以尝试达到足够的t值。 一旦这样做,该进程将取消共享秘密,并在本地安装驱动器。 给定双向通信,这种安装在所有t节点上同时发生或多或少地出现。 安装驱动器后,集群可以正常继续启动。
    • 10. 发明公开
    • OPTICAL DISC PLAYBACK DEVICE
    • 光盘播放设备
    • EP2555199A1
    • 2013-02-06
    • EP11762145.8
    • 2011-03-01
    • Panasonic Corporation
    • YUKI, Keizo
    • G11B27/10G11B20/10
    • G11B20/10G11B19/02G11B27/002G11B27/105G11B27/34G11B2220/213G11B2220/2541G11B2220/41
    • A reproducing apparatus 100 includes a signal processing unit 115 that performs background playback of a title based on data recorded on a BD after an operation mode is changed from a reproduction mode of the BD to a different mode. The signal processing unit 115 holds screen information concerning a mask screen that masks a reproduction screen of the title, and screen information concerning a replacement demand screen that prompts replacement of the housed BD, outputs the mask screen when the operation mode is returned to the reproduction mode in a case where a playback position of the BD does not reach an end during the background playback, and outputs the replacement demand screen when the operation mode is returned to the reproduction mode in a case where the playback position reaches the end during the background playback. With such a configuration, it is possible to notify a user of a situation where an optical disk needs to be replaced in order to watch and listen to a next part of a title in a case where the title is constituted by a plurality of optical disks, and the title is being reproduced by an on-vehicle optical disk reproducing apparatus while a vehicle is running.
    • 再现装置100包括信号处理单元115,该信号处理单元115在操作模式从BD的再现模式改变为不同模式之后,基于记录在BD上的数据执行标题的背景播放。 信号处理单元115保存关于屏蔽了标题的再现屏幕的屏蔽屏幕的屏幕信息以及与更换需求屏幕有关的屏幕信息,该屏幕信息提示更换所容纳的BD,当操作模式返回到再现时输出屏蔽屏幕 模式,其中在背景回放期间BD的回放位置未达到结束的情况下,并且在回放位置在背景期间到达结尾的情况下当操作模式返回到再现模式时输出替换需求画面 回放。 利用这样的配置,在标题由多个光盘构成的情况下,可以通知用户需要更换光盘以观看和收听标题的下一部分的情况 ,并且在车辆行驶期间通过车载光盘再现设备再现标题。