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    • 2. 发明申请
    • System and Method of Generically Detecting the Presence of Emulated Environments
    • 一般检测仿真环境的系统和方法
    • US20080147353A1
    • 2008-06-19
    • US11834891
    • 2007-08-07
    • Richard FordWilliam AllenGerald Marin
    • Richard FordWilliam AllenGerald Marin
    • G06F17/18G06F15/00
    • G06F21/54G06F21/552
    • A method of determining that protected software is running in a virtualized environment includes obtaining a set of baseline measurements of system call timings in native operating system environments. Statistical thresholds are established based on the baseline measurements such that there is a predetermined probability that protected software running in a native environment will experience system call durations that exceed the thresholds. The protected software is analyzed and instructions are incorporated within the software such that particular system calls, demonstrated to be differentiating using the set of baseline measurements and the threshold analysis, are executed during the normal running of the protected software. The incorporated instructions are used to estimate the parameter values that are to be compared with the established statistical thresholds. Repeated comparisons of the estimates obtained during the normal running of the protected software are executed to determine whether the software is running in a virtualized environment.
    • 确定受保护软件在虚拟化环境中运行的方法包括在本地操作系统环境中获得系统呼叫定时的一组基线测量。 基于基线测量建立统计阈值,使得存在在本机环境中运行的受保护软件将经历超过阈值的系统呼叫持续时间的预定概率。 受保护的软件被分析并且指令被并入软件内,使得在受保护的软件的正常运行期间执行被证明使用该组基线测量和阈值分析来区分的特定系统调用。 结合的指令用于估计要与建立的统计阈值进行比较的参数值。 执行受保护软件正常运行期间获得的估计值的重复比较,以确定软件是否在虚拟化环境中运行。
    • 5. 发明申请
    • Dynamic exhaust tip
    • 动态排气口
    • US20070095057A1
    • 2007-05-03
    • US11262248
    • 2005-10-28
    • Nicholas FieldRichard Ford
    • Nicholas FieldRichard Ford
    • F01N3/02
    • F01N13/082
    • An exhaust tip assembly including a cylindrical collar adapted to be secured to the distal end of a vehicular exhaust pipe and to extend beyond the distal end of the exhaust pipe. A rigid support structure is secured inside the collar and a turbine is rotatably coupled on the distal side of the rigid support structure. In a preferred embodiment, the turbine is concentric with the collar and has a fixed axial position adjacent the distal end of the cylindrical collar. It is also preferred for the turbine to form a plurality of vanes facing the distal end of the exhaust pipe such that exhaust gases pass over the vanes and cause the turbine to freely spin in one direction. It is further preferred if the turbine is free to continue spinning independent of exhaust gases continuing to exit the exhaust pipe through the collar.
    • 一种排气尖端组件,其包括适于固定到车辆排气管的远端并延伸超过排气管的远端的圆柱形套环。 刚性支撑结构被固定在套环内部,并且涡轮机可旋转地联接在刚性支撑结构的远侧上。 在优选实施例中,涡轮机与轴环同心,并且具有与圆柱形套环的远端相邻的固定的轴向位置。 涡轮机还优选形成面向排气管的远端的多个叶片,使得废气通过叶片并使涡轮机沿一个方向自由旋转。 进一步优选的是,涡轮机独立于继续通过轴环离开排气管的排气继续旋转。