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    FPGA configuration data scrambling using input multiplexers
    3.
    发明授权
    FPGA configuration data scrambling using input multiplexers 有权
    使用输入多路复用器的FPGA配置数据加扰

    公开(公告)号：US08650409B1

    公开(公告)日：2014-02-11

    申请号：US10942151

    申请日：2004-09-15

    Applicant: Dirk Reese ,  Thomas H. White

    Inventor： Dirk Reese ,  Thomas H. White

    IPC: G06F21/00

    CPC classification number: H03K19/017581 ,  G06F21/72 ,  G06F21/76 ,  G06F2221/2107 ,  G09C1/00 ,  H04L9/0897

    Abstract: Circuits, methods, and apparatus that provide for protection of configuration bitstreams from theft. One exemplary embodiment receives a scrambled configuration bitstream with an integrated circuit. The scrambled configuration bitstream is descrambled using a plurality of multiplexers under control of a security key. A configuration bitstream is received in portions. One specific embodiment uses a key stored in memory to control a bank of multiplexers that descramble each of the received portions of the configuration bitstream. Other embodiments store longer keys, and use portions of the keys to descramble one or more portions of their respective configuration bitstreams. The outputs of the multiplexers are then stored in configuration memory cells.

    Abstract translation: 提供保护配置比特流免遭盗窃的电路，方法和设备。 一个示例性实施例使用集成电路接收加扰配置比特流。 在安全密钥的控制下，使用多个多路复用器对扰频配置比特流进行解扰。 部分接收配置比特流。 一个具体实施例使用存储在存储器中的密钥来控制解扰配置比特流的每个接收部分的多路复用器组。 其他实施例存储较长的密钥，并且使用密钥的部分来解扰其各自配置比特流的一个或多个部分。 然后将多路复用器的输出存储在配置存储单元中。

    Over-voltage protection of integrated circuit I/O pins
    4.
    发明授权
    Over-voltage protection of integrated circuit I/O pins 失效
    集成电路I / O引脚的过电压保护

    公开(公告)号：US06970024B1

    公开(公告)日：2005-11-29

    申请号：US10786370

    申请日：2004-02-24

    Applicant: Dirk Reese ,  Tzung-Chin Chang ,  Chiakang Sung ,  Khai Nguyen ,  Gopinath Rangan ,  Xiaobao Wang

    Inventor： Dirk Reese ,  Tzung-Chin Chang ,  Chiakang Sung ,  Khai Nguyen ,  Gopinath Rangan ,  Xiaobao Wang

    IPC: H03K3/01 ,  H03K3/356 ,  H03K19/003

    CPC classification number: H03K3/356113 ,  H03K19/00315

    Abstract: Circuits, methods, and apparatus for protecting devices in an output stage from over-voltage conditions caused by high supply and input voltages. Embodiments provide over-voltage protection that operates over a range of voltage levels, and that can be optimized for performance at different voltage levels. An exemplary embodiment of the present invention uses stacked devices to protect n and p-channel output devices from excess supply and input voltages. These stacked devices are biased by voltages received at their gates. These gate voltages vary as a function of supply voltage to maintain performance. Other embodiments of the present invention provide a body bias switch that generates a bias for the bulk of p-channel output devices. This bias tracks the higher of a supply or input voltage, such that parasitic drain-to-bulk diodes do not conduct. A switch may be provided that shorts the bulk connection to VCC under appropriate conditions.

    Abstract translation: 用于保护输出级的器件免受由高电源和输入电压引起的过电压状态的电路，方法和装置。 实施例提供了在一定范围的电压电平上工作的过电压保护，并且可针对不同电压电平下的性能进行优化。 本发明的示例性实施例使用堆叠器件来保护n和p沟道输出器件免受过多的电源和输入电压的影响。 这些堆叠的器件被其栅极处接收的电压偏置。 这些栅极电压随着电源电压而变化，以保持性能。 本发明的其它实施例提供一种主体偏置开关，其产生用于大量p沟道输出装置的偏置。 该偏置跟踪电源或输入电压的较高，使得寄生漏极 - 体二极管不导通。 可以提供在适当条件下短路与VCC的大容量连接的开关。

    Process for producing styrene polymers with narrow particle size distribution
    5.
    发明授权
    Process for producing styrene polymers with narrow particle size distribution 失效
    用于生产具有窄粒度分布的苯乙烯聚合物的方法

    公开(公告)号：US5086079A

    公开(公告)日：1992-02-04

    申请号：US638157

    申请日：1991-01-10

    Applicant: Dirk Reese ,  Horst Leithoeuser

    Inventor： Dirk Reese ,  Horst Leithoeuser

    IPC: C08F2/18 ,  C08F2/44 ,  C08F6/00 ,  C08F6/06 ,  C08F12/00 ,  C08F12/08 ,  C08J5/00 ,  C08J9/20

    CPC classification number: C08J9/20 ,  C08F12/08 ,  C08J2325/04 ,  Y10S526/91

    Abstract: A process for producing styrene-containing polymers having a narrow particle size distribution, comprising the steps:(i) preparing a polymerization mixture, said mixture comprisinga) an organic phase comprising at least 50 wt %. styrene and a monomer-soluble polymerization initiator, andb) an aqueous phase comprising water, an organic protective colloid and a substantially water insoluble inorganic suspension stabilizer;(ii) adding to said polymerization mixture 50-500 ppm of a metal carbonate, bicarbonate or mixtures thereof based on said aqueous phase; and(iii) polymerizing said polymer mixture to produce said styrene-containing polymer particles.

    Abstract translation: 一种制备具有窄粒度分布的含苯乙烯的聚合物的方法，包括以下步骤：（i）制备聚合混合物，所述混合物包含a）包含至少50重量％的有机相。 苯乙烯和单体可溶性聚合引发剂，和b）包含水，有机保护胶体和基本上水不溶性的无机悬浮稳定剂的水相; （ii）基于所述水相向所述聚合混合物中加入50-500ppm的金属碳酸盐，碳酸氢盐或其混合物; 和（iii）聚合所述聚合物混合物以产生所述含苯乙烯的聚合物颗粒。

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