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    • 3. 发明授权
    • Communication systems and methods for digital content modification and protection
    • 用于数字内容修改和保护的通信系统和方法
    • US07996899B1
    • 2011-08-09
    • US11361471
    • 2006-02-24
    • Curtis H. BrunerChristopher J. Squires
    • Curtis H. BrunerChristopher J. Squires
    • G06F21/00
    • G06F21/10
    • A communication system comprises a content provider system configured to receive a content request indicating content and a device identifier, determine a first key based on the device identifier, process the content using the first key to modify the content from an unprotected state to a protected state, and transfer the content in the protected state. The communication system further comprises an end user system configured to receive the content in the protected state and process the content with a second key to modify the content from the protected state to an unprotected state wherein the second key is internally hard coded to the end user system.
    • 通信系统包括内容提供者系统,被配置为接收指示内容的内容请求和设备标识符,基于设备标识符确定第一密钥,使用第一密钥对内容进行处理,以将内容从未保护状态修改为保护状态 ,并将内容传输到受保护状态。 通信系统还包括被配置为接收处于受保护状态的内容并且用第二密钥处理内容的终端用户系统,以将内容从受保护状态修改为不受保护状态,其中第二密钥被内部硬编码到最终用户 系统。