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12 条记录 (耗时 0.016 秒)

    Cipher core in a content protection system
    2.
    发明授权
    Cipher core in a content protection system 有权
    内容保护系统中的密码核心

    公开(公告)号：US06324288B1

    公开(公告)日：2001-11-27

    申请号：US09313133

    申请日：1999-05-17

    申请人： Jeffrey D. Hoffman

    发明人： Jeffrey D. Hoffman

    IPC分类号： G06F124

    CPC分类号： H04L9/0637 ,  H04L12/40104 ,  H04L2209/12 ,  H04L2209/60

    摘要： A cipher system having a cipher core to encrypt plaintext data into ciphertext data, and a bus interface coupled to the cipher core to transfer the ciphertext data to a bus. In one embodiment, the cipher core comprises a block assembler to receive words of data and to assemble the words into a block, an encryption function to encrypt the block based on an encryption function key, a block transmitter to receive the encrypted block and to disassemble the encrypted block into encrypted data words, and a controller to control multiple rounds of encryption by the encryption function for the block. In another embodiment, the encryption function is duplicated and the controller is replaced by two controllers, the first controller controlling the first five rounds of encryption of the block and the second controller controlling the second five rounds of encryption of the block.

    摘要翻译： 具有将明文数据加密为密文数据的密码核心的加密系统，以及耦合到加密核心的总线接口，以将密文数据传送到总线。 在一个实施例中，密码核心包括块汇编器，用于接收数据字并将单词组合成块，加密功能，用于基于加密功能密钥来加密块;块发送器，用于接收加密块并拆卸 将加密的块转换为加密数据字，以及控制器，通过块的加密功能来控制多轮加密。 在另一个实施例中，复制加密功能，并且控制器由两个控制器替代，第一控制器控制块的前五轮加密，而第二控制器控制该块的第二个五轮的加密。

    Adaptive communication interface
    3.
    发明授权
    Adaptive communication interface 有权
    自适应通信接口

    公开(公告)号：US08850059B2

    公开(公告)日：2014-09-30

    申请号：US12352499

    申请日：2009-01-12

    申请人： Jeffrey D. Hoffman ,  Allan R. Bjerke

    发明人： Jeffrey D. Hoffman ,  Allan R. Bjerke

    IPC分类号： G06F15/173

    CPC分类号： H04L67/10 ,  G11C7/22 ,  G11C2207/2254 ,  H04L1/0002

    摘要： Embodiments of the invention include a communication interface and protocol for allowing communication between devices, circuits, integrated circuits and similar electronic components having different communication capacities or clock domains. The interface supports communication between any components having any difference in capacity and over any distance. The interface utilizes request and acknowledge phases and signals and an initiator-target relationship between components that allow each side to throttle the communication rate to an accepted level for each component or achieve a desired bit error rate.

    摘要翻译： 本发明的实施例包括用于允许设备，电路，集成电路和具有不同通信容量或时钟域的类似电子部件之间的通信的通信接口和协议。 该接口支持任何具有任何容量差异和任何距离的组件之间的通信。 该接口利用请求和确认阶段和信号以及组件之间的启动器 - 目标关系，允许每一方将通信速率抑制到每个组件的可接受级别或实现所需的误码率。

    Apparatus and associated methods for precision ranging measurements in a wireless communication environment
    6.
    发明授权
    Apparatus and associated methods for precision ranging measurements in a wireless communication environment 失效
    用于在无线通信环境中精确测距的设备和相关方法

    公开(公告)号：US07203500B2

    公开(公告)日：2007-04-10

    申请号：US10633269

    申请日：2003-08-01

    申请人： David G. Leeper ,  David G. England ,  Jeffrey D. Hoffman

    发明人： David G. Leeper ,  David G. England ,  Jeffrey D. Hoffman

    IPC分类号： H04Q7/20

    CPC分类号： G01S13/0209 ,  G01S5/021 ,  G01S5/14 ,  H04B1/7163

    摘要： An apparatus and associated methods to provide precision ranging measurements in an ultrawideband (UWB) wireless communication system are generally described. In this regard, according to one example embodiment, an innovative ranging agent is introduced that effectively computes one or more of the time of signal propagation, the difference in local clocks and frequency offsets to calculate an increasingly accurate estimate of the proximal distance between two or more devices in UWB communication.x.

    摘要翻译： 通常描述在超宽带（UWB）无线通信系统中提供精确测距测量的装置和相关方法。 在这方面，根据一个示例实施例，引入了创新的测距代理，其有效地计算信号传播的时间中的一个或多个，本地时钟和频率偏移的差异，以计算对两个或更多个 UWB通信中的更多设备。

    Adaptive communication interface
    7.
    发明授权
    Adaptive communication interface 有权
    自适应通信接口

    公开(公告)号：US07500129B2

    公开(公告)日：2009-03-03

    申请号：US10976572

    申请日：2004-10-29

    申请人： Jeffrey D. Hoffman ,  Allan R. Bjerke

    发明人： Jeffrey D. Hoffman ,  Allan R. Bjerke

    IPC分类号： H04L7/00

    CPC分类号： H04L67/10 ,  G11C7/22 ,  G11C2207/2254 ,  H04L1/0002

    摘要： Embodiments of the invention include a communication interface and protocol for allowing communication between devices, circuits, integrated circuits and similar electronic components having different communication capacities or clock domains. The interface supports communication between any components having any difference in capacity and over any distance. The interface utilizes request and acknowledge phases and signals and an initiator-target relationship between components that allow each side to throttle the communication rate to an accepted level for each component or achieve a desired bit error rate.

    摘要翻译： 本发明的实施例包括用于允许设备，电路，集成电路和具有不同通信容量或时钟域的类似电子部件之间的通信的通信接口和协议。 该接口支持任何具有任何容量差异和任何距离的组件之间的通信。 该接口利用请求和确认阶段和信号以及组件之间的启动器 - 目标关系，允许每一方将通信速率抑制到每个组件的可接受级别或实现所需的误码率。

    ADAPTIVE COMMUNICATION INTERFACE
    9.
    发明申请
    ADAPTIVE COMMUNICATION INTERFACE 有权
    自适应通信接口

    公开(公告)号：US20090132722A1

    公开(公告)日：2009-05-21

    申请号：US12352499

    申请日：2009-01-12

    申请人： Jeffrey D. Hoffman ,  Allan R. Bjerke

    发明人： Jeffrey D. Hoffman ,  Allan R. Bjerke

    IPC分类号： G06F15/173

    CPC分类号： H04L67/10 ,  G11C7/22 ,  G11C2207/2254 ,  H04L1/0002

    摘要： Embodiments of the invention include a communication interface and protocol for allowing communication between devices, circuits, integrated circuits and similar electronic components having different communication capacities or clock domains. The interface supports communication between any components having any difference in capacity and over any distance. The interface utilizes request and acknowledge phases and signals and an initiator-target relationship between components that allow each side to throttle the communication rate to an accepted level for each component or achieve a desired bit error rate.

    摘要翻译： 本发明的实施例包括用于允许设备，电路，集成电路和具有不同通信容量或时钟域的类似电子部件之间的通信的通信接口和协议。 该接口支持任何具有任何容量差异和任何距离的组件之间的通信。 该接口利用请求和确认阶段和信号以及组件之间的启动器 - 目标关系，允许每一方将通信速率抑制到每个组件的可接受级别或实现所需的误码率。