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    • 93. 发明授权
    • Scheme for blocking the use of lost or stolen network-connectable computer systems
    • 阻止使用丢失或被盗的可连接网络的计算机系统的方案
    • US06925562B2
    • 2005-08-02
    • US09738559
    • 2000-12-15
    • Ceki GulcuPatrick DrozRobert Haas
    • Ceki GulcuPatrick DrozRobert Haas
    • G06F21/88H04L29/06H04L9/00
    • H04L63/101G06F21/88H04L63/108
    • Scheme for switching a computer system (21), which is connectable via a communication interface and a network (22) to a server module (23), into a special mode of operation. The computer system (21) comprises a software component (26) for sending an identifier (w) assigned to the computer system (21) via the communication interface and the network (22) to the server module (23). In response, the software component (26) receives a token (S), issued by the server module (23), whereby the token (S) comprises a credit (C). In addition, the computer system (21) comprises a trusted hardware component (25) storing the identifier (w) and comprising a credit counter (44) with a credit which is automatically exhaustible step-by-step, and which is updateable with the credit (C) received from the server module (23). The computer system (21) has a trigger unit for switching the computer system (21) into the special mode of operation, e.g. a mode where the computer system (21) is of limited use to a user, if the credit of the credit counter is exhausted.
    • 用于将通过通信接口和网络(22)可连接到计算机系统(21)的服务器模块(23)切换到特殊操作模式的方案。 计算机系统(21)包括用于经由通信接口和网络(22)将分配给计算机系统(21)的标识符(w)发送到服务器模块(23)的软件组件(26)。 作为响应,软件组件(26)接收由服务器模块(23)发出的令牌(S),由此令牌(S)包括信用(C)。 此外,计算机系统(21)包括存储标识符(w)的可信硬件组件(25),并且包括信用计数器(44),信用计数器(44)具有逐步自动耗尽的信用,并且其可更新为 从服务器模块(23)接收的信用(C)。 计算机系统(21)具有用于将计算机系统(21)切换到特殊操作模式的触发单元,例如, 如果信用计数器的信用被用尽,则计算机系统(21)对用户有限的使用模式。