Device registration system and device registration apparatus
    41.
    发明授权
    Device registration system and device registration apparatus 有权
    设备注册系统和设备注册设备

    公开(公告)号:US07984489B2

    公开(公告)日:2011-07-19

    申请号:US11631798

    申请日:2005-07-14

    IPC分类号: H04L9/00

    CPC分类号: G06F21/10

    摘要: When a PC transmits a content request to a device registration apparatus in which a permitted number of devices have already been registered, an expiration time management unit judges whether any registration information registered in a registration list management unit has an exceeded registration expiration time. If registration information with an exceeded registration expiration time is registered in the registration list management unit, the registration list management unit deletes this registration information, and newly registers registration information of the PC.

    摘要翻译: 当PC向其中已经登记了许可数量的设备的设备注册设备发送内容请求时,期满时间管理单元判断登记在注册列表管理单元中的任何注册信息是否具有超过的注册期满时间。 如果在注册表管理单元中登记具有超过注册到期时间的注册信息,则注册列表管理单元删除该注册信息,并且新登记PC的注册信息。

    Digital work protection system
    45.
    发明授权
    Digital work protection system 有权
    数字化工作保护系统

    公开(公告)号:US07693795B2

    公开(公告)日:2010-04-06

    申请号:US10655129

    申请日:2003-09-05

    IPC分类号: G06F21/00

    摘要: Disclosed is a digital work protection system enabling a content distributor to flexibly define usage patterns of content permitted for users. The system is composed of a recording device and a playback device. The recording device acquires a digital work, range information showing a permission range within which the digital work is permitted to be used, and a subrange key for each subrange, generates an encryption key using all the acquired subrange keys, encrypts the digital work based on the encryption key to generate encryption information, and writes the encryption information and the range information to a recording medium. The playback device reads the range information and the encrypted information from the recording medium, acquires a subrange key for each subrange, generates a decryption key using all the acquired subrange keys, decrypts the encrypted information based on the decryption key to generate a digital work, and plays the digital work.

    摘要翻译: 公开了一种数字作业保护系统,使得内容分发者能够灵活地定义允许用户使用的内容的使用模式。 该系统由记录装置和播放装置组成。 记录装置获取数字作品,示出允许使用数字作品的许可范围的范围信息和每个子范围的子类别密钥,使用所有获取的子分类密钥生成加密密钥,基于 用于生成加密信息的加密密钥,并将加密信息和范围信息写入记录介质。 播放装置从记录介质读取范围信息和加密信息,获取每个子范围的子范围密钥,使用所有获取的子范围密钥生成解密密钥,基于解密密钥解密加密信息以产生数字作业, 并播放数字作品。

    Group formation/management system, group management device, and member device
    47.
    发明授权
    Group formation/management system, group management device, and member device 有权
    集团组建/管理系统,集团管理设备和会员设备

    公开(公告)号:US07441117B2

    公开(公告)日:2008-10-21

    申请号:US10649678

    申请日:2003-08-28

    IPC分类号: H04L9/32

    摘要: A group formation/management system rigidly sets a group range, allows contents to be used freely among member devices in the group, and includes one or more registered member devices for holding common secret information unique to the group, a new member device for transmitting a request for registration in the group and receiving and holding common secret information, and a group management device for receiving the registration request from the new member device and, when the number of registered member devices is less than the maximum number of registerable member devices, outputting the common secret information to the new member device. Furthermore, because member devices are authenticated using the common secret information when contents are to be used, and contents are only delivered if the authentication is successful, member devices that do not hold the common secret information (i.e. unregistered member devices) can be prevented from using contents.

    摘要翻译: 群组形成/管理系统刚性地设置组范围,允许组内的成员设备之间自由使用内容,并且包括用于保存该组唯一的公用秘密信息的一个或多个注册成员设备,用于发送组 请求在组中注册并接收和保存公用秘密信息;以及组管理装置,用于从新成员设备接收注册请求,并且当注册成员设备的数量小于可注册成员设备的最大数量时,输出 向新成员设备的通用秘密信息。 此外,由于当使用内容时会使用公用秘密信息来认证成员设备,如果认证成功,则仅传送内容,因此可以防止不保存公用秘密信息的成员设备(即,未注册的成员设备) 使用内容。

    Content duplication management system and networked apparatus
    50.
    发明授权
    Content duplication management system and networked apparatus 有权
    内容复制管理系统和联网设备

    公开(公告)号:US07188224B2

    公开(公告)日:2007-03-06

    申请号:US10649890

    申请日:2003-08-28

    IPC分类号: G06F12/14

    摘要: A highly-convenient content duplication management system for allowing users to duplicate a content as long as the duplication is in compliance with a given usage right. In the system, a request destination device stores a content and a permitted number of duplications of the content. In response to a duplication request, the request destination device judges whether or not the request source device is an in-group device that belongs to the same group as the request destination device. When judging that the request source device is an in-group device, the request destination device transmits the content together with a permitted number that is equal to or smaller than the currently stored permitted number. The request destination device then updates the currently stored permitted number by subtracting the permitted number transmitted.

    摘要翻译: 一种高度方便的内容复制管理系统,只要复制符合给定的使用权限,允许用户复制内容。 在系统中,请求目的地装置存储内容和允许的内容的重复次数。 响应于复制请求,请求目的地设备判断请求源设备是否属于与请求目的地设备相同组的组内设备。 当判断请求源设备是组内设备时,请求目的地设备与当前存储的允许号码等于或小于的允许号码一起发送内容。 然后,请求目的地装置通过减去发送的允许号码来更新当前存储的允许号码。