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    HIGH SPEED SIGNALING SYSTEM WITH ADAPTIVE TRANSMIT PRE-EMPHASIS
    3.
    发明申请
    HIGH SPEED SIGNALING SYSTEM WITH ADAPTIVE TRANSMIT PRE-EMPHASIS 有权
    具有自适应发射预报功能的高速信号系统

    公开(公告)号：US20070080718A1

    公开(公告)日：2007-04-12

    申请号：US11538333

    申请日：2006-10-03

    申请人： Vladimir Stojanovic ,  Andrew Ho ,  Anthony Bessios ,  Fred Chen ,  Elad Alon ,  Mark Horowitz

    发明人： Vladimir Stojanovic ,  Andrew Ho ,  Anthony Bessios ,  Fred Chen ,  Elad Alon ,  Mark Horowitz

    IPC分类号： H03K19/094

    CPC分类号： H04L25/49 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04L25/025 ,  H04L25/028 ,  H04L25/0282 ,  H04L25/03019 ,  H04L25/03343 ,  H04L25/03885 ,  H04L25/061 ,  H04L25/4917 ,  H04L2025/03363 ,  H04L2025/03802

    摘要： A high-speed signaling system with adaptive transmit pre-emphasis. A transmit circuit has a plurality of output drivers to output a first signal onto a signal path. A receive circuit is coupled to receive the first signal via the signal path and configured to generate an indication of whether the first signal exceeds a threshold level. A first threshold control circuit is coupled to receive the indication from the receive circuit and configured to adjust the threshold level according to whether the first signal exceeds the threshold level. A drive strength control circuit is coupled to receive the indication from the receive circuit and configured to adjust a drive strength of at least one output driver of the plurality of output drivers according to whether the first signal exceeds the threshold level.

    摘要翻译： 具有自适应发送预加重的高速信号系统。 发射电路具有多个输出驱动器，以将第一信号输出到信号路径上。 接收电路被耦合以经由信号路径接收第一信号并被配置为生成第一信号是否超过阈值电平的指示。 第一阈值控制电路被耦合以从接收电路接收指示，并且被配置为根据第一信号是否超过阈值电平来调整阈值电平。 驱动强度控制电路被耦合以从接收电路接收指示，并且被配置为根据第一信号是否超过阈值电平来调整多个输出驱动器中的至少一个输出驱动器的驱动强度。

    Noise-tolerant signaling schemes supporting simplified timing and data recovery
    5.
    发明申请
    Noise-tolerant signaling schemes supporting simplified timing and data recovery 有权
    支持简化时序和数据恢复的耐噪声信令方案

    公开(公告)号：US20050135489A1

    公开(公告)日：2005-06-23

    申请号：US10739823

    申请日：2003-12-17

    申请人： Andrew Ho ,  Vladimir Stojanovic ,  Fred Chen ,  Elad Alon ,  Mark Horowitz

    发明人： Andrew Ho ,  Vladimir Stojanovic ,  Fred Chen ,  Elad Alon ,  Mark Horowitz

    IPC分类号： G06F13/40 ,  H03K19/003 ,  H04L5/20 ,  H04L12/56 ,  H04B3/00

    CPC分类号： H04L47/10 ,  H04L5/20 ,  H04L25/0276

    摘要： Described are communication systems that convey differential and common-mode signals over the same differential channel. Noise-tolerant communication schemes use low-amplitude common-mode signals that are easily rejected by differential receivers, thus allowing for very high differential data rates. Some embodiments employ the common-mode signals to transmit backchannel signals for adjusting the characteristics of the differential transmitter. Backchannel control signals are effectively conveyed even if the forward channel transmitter is so maladjusted that the received differential data is unrecognizable. Systems in accordance with the above-described embodiments obtain these advantages without additional pins or communications channels, and are compatible with both AC-coupled and DC-coupled communications channels. Data coding schemes and corresponding data recovery circuits eliminate the need for complex, high-speed CDR circuits.

    摘要翻译： 描述了通过相同的差分通道传送差分和共模信号的通信系统。 耐噪声通信方案使用容易被差分接收机拒绝的低振幅共模信号，从而允许非常高的差分数据速率。 一些实施例采用共模信号来发送用于调整差分发射机的特性的反向信道信号。 即使前向信道发射机被调整不正确，接收到的差分数据是无法识别的，反向信道控制信号也被有效地传送。 根据上述实施例的系统在没有附加引脚或通信信道的情况下获得这些优点，并且与AC耦合和DC耦合通信信道兼容。 数据编码方案和相应的数据恢复电路不需要复杂的高速CDR电路。

    Noise-tolerant signaling schemes supporting simplified timing and data recovery
    6.
    发明申请
    Noise-tolerant signaling schemes supporting simplified timing and data recovery 有权

    公开(公告)号：US20070297520A1

    公开(公告)日：2007-12-27

    申请号：US11895415

    申请日：2007-08-23

    申请人： Andrew Ho ,  Vladimir Stojanovic ,  Fred Chen ,  Elad Alon ,  Mark Horowitz

    发明人： Andrew Ho ,  Vladimir Stojanovic ,  Fred Chen ,  Elad Alon ,  Mark Horowitz

    IPC分类号： H04B1/10

    CPC分类号： H04L47/10 ,  H04L5/20 ,  H04L25/0276

    摘要： Described are communication systems that convey differential and common-mode signals over the same differential channel. Noise-tolerant communication schemes use low-amplitude common-mode signals that are easily rejected by differential receivers, thus allowing for very high differential data rates. Some embodiments employ the common-mode signals to transmit backchannel signals for adjusting the characteristics of the differential transmitter. Backchannel control signals are effectively conveyed even if the forward channel transmitter is so maladjusted that the received differential data is unrecognizable. Systems in accordance with the above-described embodiments obtain these advantages without additional pins or communications channels, and are compatible with both AC-coupled and DC-coupled communications channels. Data coding schemes and corresponding data recovery circuits eliminate the need for complex, high-speed CDR circuits.

    Circuit calibration system and method
    8.
    发明申请
    Circuit calibration system and method 有权
    电路校准系统及方法

    公开(公告)号：US20060132339A1

    公开(公告)日：2006-06-22

    申请号：US11015971

    申请日：2004-12-17

    申请人： Elad Alon ,  Bruno Garlepp ,  Vladimir Stojanovic ,  Andrew Ho ,  Fred Chen

    发明人： Elad Alon ,  Bruno Garlepp ,  Vladimir Stojanovic ,  Andrew Ho ,  Fred Chen

    IPC分类号： H03M1/10

    CPC分类号： H03M1/1023

    摘要： An integrated circuit device includes one or more calibration paths including one or more devices. A signal generator is coupled to at least one calibration path and configured to provide the calibration path with a calibration signal having known characteristics. A controller is coupled to the signal generator and the calibration path and configured to adjust the signal generator and at least one parameter associated with at least one device in the calibration path.

    摘要翻译： 集成电路装置包括包括一个或多个装置的一个或多个校准路径。 信号发生器耦合到至少一个校准路径并且被配置为向校准路径提供具有已知特征的校准信号。 控制器耦合到信号发生器和校准路径并且被配置为调整信号发生器和与校准路径中的至少一个设备相关联的至少一个参数。

    Linear Transformation Circuits
    9.
    发明申请
    Linear Transformation Circuits 失效
    线性变换电路

    公开(公告)号：US20070058744A1

    公开(公告)日：2007-03-15

    申请号：US11557101

    申请日：2006-11-06

    申请人： Amir Amirkhany ,  Vladimir Stojanovic ,  Elad Alon ,  Jared Zerbe ,  Mark Horowitz

    发明人： Amir Amirkhany ,  Vladimir Stojanovic ,  Elad Alon ,  Jared Zerbe ,  Mark Horowitz

    IPC分类号： H04K1/10 ,  H04J11/00 ,  G06F17/14

    CPC分类号： G06F17/141 ,  G06J1/005

    摘要： A transform circuit includes a first circuit and a second circuit. The first circuit and the second circuit implement first and second mappings that together generate a pre-defined transform of N digital data symbols. The first circuit maps a set of N digital data symbols from N parallel data streams to N analog data symbols by generating N sets of first weighted sums of the N digital data symbols. Each respective first weighted sum is defined by a respective set of pre-determined first weighting values in a first matrix. The second circuit maps the N analog data symbols to a sequence of N output signals over N time intervals. Each of the N output signals corresponds to a respective second weighted sum of the N analog data symbols. Each respective second weighted sum is defined by a respective set of pre-determined second weighting values in a second matrix.

    摘要翻译： 变换电路包括第一电路和第二电路。 第一电路和第二电路实现一起产生N个数字数据符号的预定义变换的第一和第二映射。 第一电路通过产生N个数字数据符号的第一加权和的N组，将来自N个并行数据流的一组N个数字数据符号映射到N个模拟数据符号。 每个相应的第一加权和由第一矩阵中的预定的第一加权值的相应集合来定义。 第二电路在N个时间间隔内将N个模拟数据符号映射到N个输出信号的序列。 N个输出信号中的每一个对应于N个模拟数据符号的相应的第二加权和。 每个相应的第二加权和由第二矩阵中的预定的第二加权值的相应集合来定义。

    Noise-tolerant signaling schemes supporting simplified timing and data recovery
    10.
    发明授权
    Noise-tolerant signaling schemes supporting simplified timing and data recovery 有权
    支持简化时序和数据恢复的耐噪声信令方案

    公开(公告)号：US07672380B2

    公开(公告)日：2010-03-02

    申请号：US11895415

    申请日：2007-08-23

    申请人： Andrew Ho ,  Vladimir Stojanovic ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

    发明人： Andrew Ho ,  Vladimir Stojanovic ,  Fred F. Chen ,  Elad Alon ,  Mark A. Horowitz

    IPC分类号： H04B3/00 ,  H04B1/10 ,  H03D1/04 ,  H04L5/16

    CPC分类号： H04L47/10 ,  H04L5/20 ,  H04L25/0276

    摘要： Described are communication systems that convey differential and common-mode signals over the same differential channel. Noise-tolerant communication schemes use low-amplitude common-mode signals that are easily rejected by differential receivers, thus allowing for very high differential data rates. Some embodiments employ the common-mode signals to transmit backchannel signals for adjusting the characteristics of the differential transmitter. Backchannel control signals are effectively conveyed even if the forward channel transmitter is so maladjusted that the received differential data is unrecognizable. Systems in accordance with the above-described embodiments obtain these advantages without additional pins or communications channels, and are compatible with both AC-coupled and DC-coupled communications channels. Data coding schemes and corresponding data recovery circuits eliminate the need for complex, high-speed CDR circuits.

    摘要翻译： 描述了通过相同的差分通道传送差分和共模信号的通信系统。 耐噪声通信方案使用容易被差分接收机拒绝的低振幅共模信号，从而允许非常高的差分数据速率。 一些实施例采用共模信号来发送用于调整差分发射机的特性的反向信道信号。 即使前向信道发射机被调整不正确，接收到的差分数据是无法识别的，反向信道控制信号也被有效地传送。 根据上述实施例的系统在没有附加引脚或通信信道的情况下获得这些优点，并且与AC耦合和DC耦合通信信道兼容。 数据编码方案和相应的数据恢复电路不需要复杂的高速CDR电路。