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18 条记录 (耗时 0.028 秒)

    Clock signal distribution device
    5.
    发明授权
    Clock signal distribution device 失效
    时钟信号分配装置

    公开(公告)号：US4868522A

    公开(公告)日：1989-09-19

    申请号：US283686

    申请日：1988-12-13

    申请人： Kaushik Popat ,  David MacMillan

    发明人： Kaushik Popat ,  David MacMillan

    IPC分类号： G06F1/10 ,  H03L7/07 ,  H03L7/081

    CPC分类号： H03L7/07 ,  G06F1/10 ,  H03L7/0812

    摘要： A delay circit is described which automatically adjusts the propagation delay of clock signals, generated by a clock source, distributed to various receiving devices so that the receiving devices are clocked simultaneously. In one embodiment, the clock signal generated by a single clock source is independently delayed for each receiving device. To determine the proper amount of delay, a clock signal is simultaneously transmitted to each of the receiving devices and a clock return signal from each receiving device is returned to a delay circuit via a return path. The delay circuit detects the various differences in round-trip arrival times of the clock signal associated with each receiving device and fixes a particular clock signal delay for each receiving device so that subsequent clock signals will arrive at each receiving device simultaneoulsy.

    摘要翻译： 描述了一种延迟环路，其自动调节由时钟源产生的分配给各种接收设备的时钟信号的传播延迟，使得接收设备同时计时。 在一个实施例中，由单个时钟源产生的时钟信号对于每个接收设备被独立地延迟。 为了确定适当的延迟量，时钟信号被同时传送到每个接收装置，并且来自每个接收装置的时钟返回信号经由返回路径返回到延迟电路。 延迟电路检测与每个接收装置相关联的时钟信号的往返到达时间的各种差异，并且固定每个接收装置的特定时钟信号延迟，使得随后的时钟信号同时到达每个接收装置。

    Method and apparatus for two-way authentication without nonces
    6.
    发明申请
    Method and apparatus for two-way authentication without nonces 审中-公开
    无通行证双向认证的方法和装置

    公开(公告)号：US20080077795A1

    公开(公告)日：2008-03-27

    申请号：US11903812

    申请日：2007-09-25

    申请人： David MacMillan

    发明人： David MacMillan

    IPC分类号： H04L9/32 ,  H04L9/06 ,  H04L9/28

    CPC分类号： H04L9/3228 ,  H04L9/3236 ,  H04L2209/30 ,  H04L2209/38

    摘要： A method and logical apparatus for accomplishing the two-way authentication of two parties without the use of nonce values. In the prior art, authentication may be accomplished both through the use of stored and of generated password lists. Also from the prior art these methods may be extended by the use of “nonce” values, a subset of a larger category of “anti-replay values” (ARVs). ARVs are values which satisfy the constraints that they must be used only once, that they must be unguessable by an attacker, and that they must reveal nothing about either the entity generating them or the entity receiving them. These methods are extended here by using not nonces but “Mutual Anti-Replay Values” (MARVs), which are values which satisfy the requirements for ARVs and which, further, are known to both the authenticator and authenticatee. These MARVs may be stored or generated lists independent of the password lists maintained by the authenticator and authenticatee, or they may be derived in special ways from these password lists. The use of MARVs in this invention, rather than the nonces of the prior art, provides tamper-evidence at the authenticatee while a replay attack is underway and provides security against serial impersonation attacks, in addition to protection against eavesdropping, protection against replay attacks, and tamper-evidence at the authenticator.

    摘要翻译： 一种用于在不使用随机数值的情况下完成双方双向认证的方法和逻辑装置。 在现有技术中，可以通过使用存储的和生成的密码列表来实现认证。 同样来自现有技术，这些方法可以通过使用“随机数”值来扩展，即“反重播值”（ARV）的较大类别的子集。 ARV是满足约束的值，它们必须只被使用一次，它们必须被攻击者无法确定，并且它们必须对生成它们的实体或接收它们的实体没有透露。 这些方法在这里通过使用不是nonces而是“相互反重放值”（MARV）来扩展，它们是满足ARV的要求的值，并且进一步被认证者和验证者都知道。 这些MARV可以是独立于认证者和认证者维护的密码列表的存储或生成列表，或者可以从这些密码列表中以特殊方式导出。 本发明中使用MARV，而不是现有技术的使用，在重播攻击正在进行的同时，在验证者处提供篡改证据，并提供针对串行模拟攻击的安全性，以及防止窃听，防止重放攻击的保护， 并在验证器上篡改证据。

    Toner regulating system having toner regulating member with metallic coating on flexible substrate
    9.
    发明申请
    Toner regulating system having toner regulating member with metallic coating on flexible substrate 有权
    调色剂调节系统具有在柔性基底上具有金属涂层的调色剂调节部件

    公开(公告)号：US20050201781A1

    公开(公告)日：2005-09-15

    申请号：US10799954

    申请日：2004-03-12

    申请人： David MacMillan ,  Vernon Ulrich ,  Jarrett Gayne ,  Johnny Massie ,  Scott Castle

    发明人： David MacMillan ,  Vernon Ulrich ,  Jarrett Gayne ,  Johnny Massie ,  Scott Castle

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0812

    摘要： A toner layer regulating system for an electrophotographic image forming apparatus includes a toner carrier; a toner regulating member (e.g., doctor blade) disposed proximate the toner carrier, with the toner regulating member having a first surface disposed toward the toner carrier and forming a nip with the toner carrier. The toner regulating member comprise a flexible metallic substrate and a metallic coating on the first surface in an area thereof forming the nip. The coating on the toner regulating member comprises a material selected from the group consisting of molybdenum, tungsten carbide, and alloys thereof. The coating may be substantially homogeneous and/or have a thickness of not more than 30 um. The coating may have a relatively smooth surface roughness of ≦2.0 um Ra.

    摘要翻译： 用于电子照相成像设备的调色剂层调节系统包括调色剂载体; 设置在调色剂载体附近的调色剂调节构件（例如刮刀），调色剂调节构件具有朝向调色剂载体设置的第一表面并与调色剂载体形成辊隙。 调色剂调节构件包括柔性金属基底和在其形成间隙的区域中的第一表面上的金属涂层。 调色剂调节构件上的涂层包括选自钼，碳化钨及其合金的材料。 涂层可以是基本均匀的和/或具有不大于30微米的厚度。 涂层可具有<=2.0μmRa的相对平滑的表面粗糙度。

    System bus protocol interface circuit
    10.
    发明授权
    System bus protocol interface circuit 失效
    系统总线协议接口电路

    公开(公告)号：US4437158A

    公开(公告)日：1984-03-13

    申请号：US306453

    申请日：1981-09-28

    申请人： Peter H. Alfke ,  Krishna Rallapali ,  David MacMillan

    发明人： Peter H. Alfke ,  Krishna Rallapali ,  David MacMillan

    IPC分类号： G06F13/37 ,  G06F3/02 ,  G06F9/18

    CPC分类号： G06F13/37

    摘要： The present invention provides a bus protocol interface circuit for the peripheral units that prevents a conflict in bus requests between the peripheral units and permits bipolar drivers to be used for fast operation. The interface circuit comprises a logic means coupled to the bus acknowledgment line input terminal and the bus acknowledgment line output terminal for generating a logic output signal responsive to the signals on the bus acknowledgement line input and output terminals, and latching means coupled between the bus request line and the bus request line terminal, and further connected to the output of the logic means and the bus acknowledgment line output terminal, for latching into a state consistent with a bus request signal from any one of the peripheral units and for unlatching from the consistent state upon receipt of a bus acknowledgment signal in response to the bus request signal.

    摘要翻译： 本发明提供了一种用于外围单元的总线协议接口电路，其防止外围单元之间的总线请求冲突，并允许双极性驱动器用于快速操作。 接口电路包括耦合到总线确认线输入端和总线确认线输出端的逻辑装置，用于响应于总线确认线输入和输出端的信号产生逻辑输出信号，以及耦合在总线请求之间的锁存装置 线路和总线请求线路终端，并进一步连接到逻辑装置和总线确认线路输出端子的输出，用于锁存到与来自任何一个外围单元的总线请求信号一致的状态，并且从一致 响应于总线请求信号，在接收到总线确认信号时状态。