Method and apparatus for providing a border guard between security domains
    1.
    发明申请
    Method and apparatus for providing a border guard between security domains 有权
    用于在安全域之间提供边界防护的方法和装置

    公开(公告)号:US20060150252A1

    公开(公告)日:2006-07-06

    申请号:US11027206

    申请日:2004-12-30

    IPC分类号: H04N7/16

    摘要: The present invention discloses an apparatus and method for defining and enforcing rules of transition between two security domains, e.g., a transport domain and a persistent security domain. In turn, a border guard, e.g., a security device, is provided between these two domains that enforce rules for transition between the two security domains. This novel approach of defining a transport domain and a persistent security domain simplifies the classification of the digital content and its movement through the system. Namely, the border guard once established between the two systems can enforce DRM rules associated with how contents are moved between the two domains.

    摘要翻译: 本发明公开了一种用于定义和实施两个安全域(例如传输域和持久安全域)之间的转换规则的装置和方法。 反过来,在这两个域之间提供边界警卫,例如安全装置,这两个域执行两个安全域之间的转换规则。 这种定义传输域和持久安全域的新颖方法简化了数字内容的分类及其通过系统的移动。 也就是说,在两个系统之间建立的边界守卫可以实施与内容在两个域之间移动的相关联的DRM规则。

    Method and apparatus for providing a secure system time
    2.
    发明申请
    Method and apparatus for providing a secure system time 有权
    提供安全系统时间的方法和装置

    公开(公告)号:US20060146885A1

    公开(公告)日:2006-07-06

    申请号:US11026413

    申请日:2004-12-30

    IPC分类号: H04J3/06

    摘要: The present invention discloses a system and method for providing a secured system time reference to a subscriber device, e.g., a set top box or a receiver. In one embodiment, the system time reference is provided in a secure system time message that is broadcasted to a plurality of subscriber devices. Each subscriber device has a security device or software application that is capable of determining whether the received system time reference is legitimate. If the system time reference is determined to be legitimate, a local time reference is synchronized with said received system time reference.

    摘要翻译: 本发明公开了一种用于向订户设备(例如机顶盒或接收机)提供安全系统时间参考的系统和方法。 在一个实施例中,在广播到多个订户设备的安全系统时间消息中提供系统时间参考。 每个用户设备具有能够确定所接收的系统时间参考是否合法的安全设备或软件应用。 如果确定系统时间参考是合法的,则将本地时间基准与所接收的系统时间参考同步。