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    • 17. 发明专利
    • Reproduction apparatus, update control program and server device
    • 再现设备,更新控制程序和服务器设备
    • JP2008136135A
    • 2008-06-12
    • JP2006322287
    • 2006-11-29
    • Toshiba Corp株式会社東芝
    • AMO MITSUHIRO
    • H04L9/16
    • H04N19/44G11B20/00086G11B20/0021G11B20/00224G11B20/00427G11B2020/10537H04N7/1675H04N21/23473H04N21/4405H04N21/63345H04N21/8173H04N21/8193
    • PROBLEM TO BE SOLVED: To provide a reproduction apparatus in which a risk of the decryption of encrypted video data or audio data can be reduced, an update control program for a reproduction program and a server device for providing the reproduction program. SOLUTION: A video reproduction apparatus includes: a storage means for storing a reproduction program for decrypting and reproducing encrypted video data or audio data by using key data; an acquisition means for acquiring from an external device key data for updating used for updating the key data and a reproduction program for updating used for updating the reproduction program; a determination means for determining whether it is necessary to update the reproduction program; and an updating means for updating the reproduction program into the reproduction program for updating in accordance with a determination result of the determination means when updating the key data into the key data for updating. COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:提供可以减少加密的视频数据或音频数据的解密风险的再现设备,用于再现程序的更新控制程序和用于提供再现程序的服务器设备。 解决方案:视频再现设备包括:存储装置,用于存储用于通过使用密钥数据来解密和再现加密的视频数据或音频数据的再现程序; 用于从外部设备获取用于更新密钥数据的更新密钥数据的获取装置和用于更新再现程序的更新用再现程序; 确定装置,用于确定是否需要更新再现节目; 以及更新装置,用于在将密钥数据更新为用于更新的密钥数据时,根据确定装置的确定结果将再现程序更新为用于更新的再现程序。 版权所有(C)2008,JPO&INPIT