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    • 38. 发明申请
    • ENCRYPTED COMMUNICATION SYSTEM AND COMMUNICATION DEVICE
    • 加密通信系统和通信设备
    • WO2005039100A1
    • 2005-04-28
    • PCT/JP2004/015752
    • 2004-10-18
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.YAMAMICHI, MasamiFUTA, YuichiOHMORI, MotojiTATEBAYASHI, Makoto
    • FUTA, YuichiOHMORI, MotojiTATEBAYASHI, Makoto
    • H04L9/08
    • H04L9/0844H04L9/30H04L2209/605H04L2209/80
    • In an encrypted communication system that includes a first and a second device, the first device encrypts a 1st key using a public key of the second device to generate 1st encrypted data, which is then transmitted to the second device, receives 2nd encrypted data from the second device, which is then decrypted using a secret key of the first device to obtain a 2nd key, and generates, based on the 1st and 2nd keys, a 1st encryption key for use in communication with the second device. The second device encrypts a 3rd key using a public key of the first device to generate the 2nd encrypted data, which is then transmitted to the first device, receives the 1st encrypted data, which is then decrypted using a secret key of the second device to obtain a 4th key, and generates, based on the 3rd and 4th keys, a 2nd encryption key for use in communication with the first device. The first and second devices perform encrypted communication using the 1st and 2nd encryption keys.
    • 在包括第一和第二设备的加密通信系统中,第一设备使用第二设备的公开密钥对第一密钥进行加密,以生成第一加密数据,然后将其传送到第二设备,从第二设备接收第二加密数据 第二设备,然后使用第一设备的秘密密钥解密以获得第二密钥,并且基于第一和第二密钥生成用于与第二设备通信的第一加密密钥。 第二设备使用第一设备的公开密钥对第三密钥进行加密以产生第二加密数据,然后将其传送到第一设备,接收第一加密数据,然后使用第二设备的秘密密钥将其解密 获得第四密钥,并且基于第三和第四密钥生成用于与第一设备通信的第二加密密钥。 第一和第二设备使用第一和第二加密密钥执行加密通信。
    • 40. 发明申请
    • STORAGE MEDIUM RENTAL SYSTEM
    • 存储中型租赁系统
    • WO2004107343A2
    • 2004-12-09
    • PCT/JP2004/007231
    • 2004-05-20
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.YAMAMOTO, MasayaMINAMI, MasatakaOHMORI, MotojiOKADA, Tomoyuki
    • YAMAMOTO, MasayaMINAMI, MasatakaOHMORI, MotojiOKADA, Tomoyuki
    • G11B27/00
    • G06Q30/06G06F21/10G06F2221/2101G06F2221/2135G06Q40/12
    • A rental system includes a terminal apparatus, a BD player, and a server apparatus. At renting BD storing pieces of content, the terminal apparatus writes rental information including content ID identifying each piece of content, viewing status, and content key, to the user's memory card. The player plays back content when viewing status is "viewing-permitted" or "additionally-viewed", and when viewing status is "not-viewed", changes to "additionally-viewed", and plays it back. At returning BD, the terminal apparatus calculates a content rental fee when "additionally-viewed" is in the memory card, and charges the fee to the user. The terminal apparatus reads use-history information about playback of content from the memory card, internally stores it as use information, and regularly transmits the use information to the server apparatus managed by the content provider. The server apparatus calculates a content fee using the stored use information, and charges the fee to the rental agent.
    • 租赁系统包括终端设备,BD播放器和服务器设备。 在租用BD存储内容的情况下,终端装置将包含识别每条内容的内容ID,观看状态和内容密钥的租赁信息写入用户的存储卡。 当观看状态为“允许观看”或“另外观看”时,播放器播放内容,并且当观看状态为“未观看”时,播放回“内容”,然后播放。 在返回BD时,终端装置在存储卡中“附加观看”时计算内容租赁费,并向用户收取费用。 终端装置从存储卡读取关于内容的回放的使用历史信息,将其内部存储为使用信息,并且将使用信息定期地发送到由内容提供商管理的服务器装置。 服务器装置使用所存储的使用信息计算内容费,并向租赁代理收取费用。