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1. 发明授权

US06937054B2 Programmable peaking receiver and method 有权
标题翻译：可编程峰值接收机和方法
公开(公告)号：US06937054B2
公开(公告)日：2005-08-30
申请号：US10250043
申请日：2003-05-30
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , William F. Washburn , Huihao H. Xu , Steven J. Zier
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , William F. Washburn , Huihao H. Xu , Steven J. Zier
IPC分类号： H04L25/02 , H03K19/003
CPC分类号： H04L25/0272 , H04L25/0278 , H04L25/0294 , H04L25/03885
摘要： Methods and structures are disclosed herein for programmably adjusting a peaking function of a differential signal receiver. The disclosed method includes inputting a pair of differential signals to a pair of input transistors coupled to conduct currents differentially between a pair of load impedances and a pair of tail transistors. The impedance of an adjustable shunt impedance element between the tail transistors of the receiver is varied by programming signal input, such that higher current is conducted over a peaking range of frequencies. In a disclosed structural embodiment, an integrated circuit is provided having a programmable peaking receiver. The programmable peaking receiver includes a pair of input transistors coupled to conduct differentially according to a pair of differential inputs applied to the pair of input transistors. Each of the input transistors produces an output in accordance with the differential input applied thereto. The programmable peaking receiver also includes a pair of tail transistors, coupled to draw current from the input transistors, and a programmably adjustable impedance element coupled between current-conducting nodes of the tail transistors. The impedance of the programmably adjustable impedance element is thereby adjustable in response to programming signal input to adjust a peaking function of the programmable peaking receiver.
摘要翻译：本文公开了可编程地调节差分信号接收器的峰值功能的方法和结构。所公开的方法包括将一对差分信号输入到耦合以在一对负载阻抗和一对尾部晶体管之间差分地传导电流的一对输入晶体管。接收器的尾部晶体管之间的可调节分流阻抗元件的阻抗由编程信号输入变化，使得在峰值范围的频率上进行更高的电流。在公开的结构实施例中，提供了具有可编程峰值接收器的集成电路。可编程峰值接收器包括一对输入晶体管，其被耦合以根据施加到该对输入晶体管的一对差分输入进行差分导通。每个输入晶体管根据施加到其上的差分输入产生输出。可编程峰值接收器还包括耦合以从输入晶体管抽取电流的一对尾部晶体管，以及耦合在尾部晶体管的导电节点之间的可编程可调阻抗元件。可编程可调阻抗元件的阻抗因此可响应于编程信号输入而调节，以调节可编程峰值接收器的峰值功能。

2. 发明授权

US07205830B2 Analog MOS circuits having reduced voltage stress 失效
标题翻译：具有降低的电压应力的模拟MOS电路
公开(公告)号：US07205830B2
公开(公告)日：2007-04-17
申请号：US10905436
申请日：2005-01-04
申请人： Gautam Gangasani , Louis L. Hsu , Karl D. Selander , Steven J. Zier
发明人： Gautam Gangasani , Louis L. Hsu , Karl D. Selander , Steven J. Zier
IPC分类号： G05F1/10
CPC分类号： G05F3/262
摘要： Circuits and methods are provided for reducing the voltage stress applied to the drain to source conduction path of an FET and/or to reduce the stress to the gate oxide of an FET which may have a thin gate oxide. Thus, in a current mirror circuit disclosed herein, a first field effect transistor (FET) has a first gate and a first drain, in which the first drain is conductively connected to a current source for conducting a first current. The current mirror circuit also includes at least one second FET having a second gate conductively connected to the first gate, in which the second FET is operable to output a second current in fixed proportion to the first current. A switching element having a first conductive terminal is connected to the first gate and to the second gate, the second conductive terminal being connected to the first drain of the first FET. A switching network is operable to controllably switch the first and second FETs and the third switching element between a powered on state in which the first and second currents are conducted and the third switching element is conducting, and a powered off state in which the first and second currents are not conducted and the third switching element is nonconducting such that the same drain to source voltage stress is applied to both first and second FETs.
摘要翻译：提供电路和方法用于降低施加到FET的漏极/源极传导路径的电压应力和/或减小对可能具有薄栅极氧化物的FET的栅极氧化物的应力。因此，在本文公开的电流镜电路中，第一场效应晶体管（FET）具有第一栅极和第一漏极，其中第一漏极导电连接到用于导电第一电流的电流源。电流镜电路还包括具有导电连接到第一栅极的第二栅极的至少一个第二FET，其中第二FET可操作以输出与第一电流固定比例的第二电流。具有第一导电端子的开关元件连接到第一栅极和第二栅极，第二导电端子连接到第一FET的第一漏极。开关网络可操作以在第一和第二电流被导通的导通状态和第三开关元件导通之间可控地切换第一和第二FET和第三开关元件，以及断电状态，其中第一和第二开关不传导第二电流，第三开关元件不导通，使得相同的漏极/源极电压应力施加到第一和第二FET。

3. 发明申请

US20080137721A1 Automatic adaptive equalization method for high-speed serial transmission link 失效
标题翻译：自动自适应均衡方法用于高速串行传输链路
公开(公告)号：US20080137721A1
公开(公告)日：2008-06-12
申请号：US11974967
申请日：2007-10-17
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Jeremy K. Stephens , Huihao Xu
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Jeremy K. Stephens , Huihao Xu
IPC分类号： H04L27/01
CPC分类号： H04L25/03057 , H04L25/03343
摘要： In a method for performing equalization of a communication system, a predetermined signal can be transmitted from a transmitter unit to a receiver unit in a downchannel direction on a transmission line, for example as a pair of differential signals which simultaneously transition in opposite directions on respective signal conductors of the transmission line. At the receiver unit, an eye opening of the signal received from the transmission line can be analyzed to determine equalization information. Equalization information can be transmitted from the receiver unit to the transmitter unit in an upchannel direction on the transmission line and be received at the transmitter unit. Using received equalization information, a transmission characteristic of the transmitter unit can be adjusted.
摘要翻译：在用于执行通信系统的均衡的方法中，可以将预定信号从发射机单元发送到传输线上的下行信道方向上的接收机单元，例如作为在相应方向上同时沿相反方向转变的一对差分信号传输线的信号导体。在接收机单元，可以分析从传输线接收的信号的眼图，以确定均衡信息。均衡信息可以在传输线上的上行方向上从接收机单元发送到发射机单元，并在发射机单元处接收。使用接收到的均衡信息，可以调整发送单元的发送特性。

4. 发明授权

US08040813B2 Apparatus and method for reduced loading of signal transmission elements 有权
标题翻译：信号传输元件负载减小的装置和方法
公开(公告)号：US08040813B2
公开(公告)日：2011-10-18
申请号：US10908959
申请日：2005-06-02
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Daniel W. Storaska
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Daniel W. Storaska
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H03K17/16 , G05F1/00 , H03K5/01 , H03K9/00 , H03K5/00 , H03K19/0175 , G01N30/86
CPC分类号： G06F13/4072
摘要： An apparatus is provided which includes a common signal node operable to conduct a first signal, a first circuit coupled to the common signal node to utilize the first signal and a signal-handling element coupled to the common signal node. The signal-handling element includes an isolating circuit coupled to the first conductor, a second conductor operable to conduct an output of the isolating circuit, and a signal-handling circuit coupled to the second conductor. The signal-handling circuit is operable to perform a signal-handling function in response to the output of the isolating circuit. By virtue of the isolating circuit, the signal-handling circuit and the first circuit are isolated from the second conductor and the signal-handling circuit. Preferably, the achieved isolation permits a communication signal included in the first signal to be conducted within a communication apparatus with less capacitance, and producing less return loss of that signal.
摘要翻译：提供一种装置，其包括可操作以传导第一信号的公共信号节点，耦合到公共信号节点以利用第一信号的第一电路和耦合到公共信号节点的信号处理元件。信号处理元件包括耦合到第一导体的隔离电路，可操作以导通隔离电路的输出的第二导体和耦合到第二导体的信号处理电路。信号处理电路可操作以响应于隔离电路的输出执行信号处理功能。通过隔离电路，信号处理电路和第一电路与第二导体和信号处理电路隔离。优选地，所实现的隔离允许包含在第一信号中的通信信号在具有较小电容的通信设备内传导，并且产生较小的该信号的回波损耗。

5. 发明授权

US08024679B2 Structure for apparatus for reduced loading of signal transmission elements 有权
标题翻译：信号传输元件负载减小的装置结构
公开(公告)号：US08024679B2
公开(公告)日：2011-09-20
申请号：US11999627
申请日：2007-12-06
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Daniel W. Storaska
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Daniel W. Storaska
IPC分类号： G06F17/50
CPC分类号： H03K19/0185 , H04L25/0266
摘要： A design structure for a signal-handing apparatus or communication apparatus is provided which includes a common signal node operable to conduct a first signal, a first circuit coupled to the common signal node to utilize the first signal and a signal-handling element coupled to the common signal node. A signal-handling apparatus may include an isolating circuit coupled to a first conductor, a second conductor to conduct an output of the isolating circuit, and a signal-handling circuit coupled to the second conductor. A signal-handling circuit can perform a signal-handling function in response to the output of the isolating circuit. The signal-handling circuit and the first circuit may be isolated from the second conductor and the signal-handling circuit such that a communication signal may be conducted with less capacitance and be subject to less return loss.
摘要翻译：提供了一种用于信号处理装置或通信装置的设计结构，其包括可操作以传导第一信号的公共信号节点，耦合到公共信号节点以利用第一信号的第一电路和耦合到第一信号的信号处理元件公共信号节点。信号处理装置可以包括耦合到第一导体的隔离电路，用于导通隔离电路的输出的第二导体以及耦合到第二导体的信号处理电路。信号处理电路可以响应于隔离电路的输出而执行信号处理功能。信号处理电路和第一电路可以与第二导体和信号处理电路隔离，使得通信信号可以以较小的电容进行并且具有较小的回波损耗。

6. 发明申请

US20090146692A1 Structure for apparatus for reduced loading of signal transmission elements 有权
标题翻译：信号传输元件负载减小的装置结构
公开(公告)号：US20090146692A1
公开(公告)日：2009-06-11
申请号：US11999627
申请日：2007-12-06
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Daniel W. Storaska
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Daniel W. Storaska
IPC分类号： H03K19/0175
CPC分类号： H03K19/0185 , H04L25/0266
摘要： A design structure for a signal-handing apparatus or communication apparatus is provided which includes a common signal node operable to conduct a first signal, a first circuit coupled to the common signal node to utilize the first signal and a signal-handling element coupled to the common signal node. A signal-handling apparatus may include an isolating circuit coupled to a first conductor, a second conductor to conduct an output of the isolating circuit, and a signal-handling circuit coupled to the second conductor. A signal-handling circuit can perform a signal-handling function in response to the output of the isolating circuit. The signal-handling circuit and the first circuit may be isolated from the second conductor and the signal-handling circuit such that a communication signal may be conducted with less capacitance and be subject to less return loss.
摘要翻译：提供了一种用于信号处理装置或通信装置的设计结构，其包括可操作以传导第一信号的公共信号节点，耦合到公共信号节点以利用第一信号的第一电路和耦合到第一信号的信号处理元件公共信号节点。信号处理装置可以包括耦合到第一导体的隔离电路，用于导通隔离电路的输出的第二导体以及耦合到第二导体的信号处理电路。信号处理电路可以响应于隔离电路的输出而执行信号处理功能。信号处理电路和第一电路可以与第二导体和信号处理电路隔离，使得通信信号可以以较小的电容进行并且具有较小的回波损耗。

7. 发明授权

US07102392B2 Signal detector for high-speed serdes 失效
标题翻译：高速伺服信号检测器
公开(公告)号：US07102392B2
公开(公告)日：2006-09-05
申请号：US10905704
申请日：2005-01-18
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna
IPC分类号： H03K5/19
CPC分类号： H03K5/19 , G01R19/165
摘要： An improved signal detector system implementable in a high-speed SerDes receiver core that is able to detect valid signals from noise signals with a much tighter tolerance. The signal detector system improves upon the prior art designs by implementing modifications including: (1) the use of two peaking amplifiers for both (differential) input signals and reference to track and cancel gain variation; and, (2) the reduction of current mirroring stages to cut down current mapping error.
摘要翻译：改进的信号检测器系统可实现在高速SerDes接收机核心中，能够以更严格的公差检测来自噪声信号的有效信号。信号检测器系统通过实施修改来改进现有技术的设计，包括：（1）使用两个峰值放大器用于（差分）输入信号和参考跟踪和消除增益变化; 和（2）减少当前镜像阶段以减少当前的映射误差。

8. 发明授权

US07733964B2 Automatic adaptive equalization method for high-speed serial transmission link 失效
标题翻译：自动自适应均衡方法用于高速串行传输链路
公开(公告)号：US07733964B2
公开(公告)日：2010-06-08
申请号：US11974967
申请日：2007-10-17
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Jeremy K. Stephens , Huihao Xu
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Jeremy K. Stephens , Huihao Xu
IPC分类号： H04B3/00 , H04L25/00
CPC分类号： H04L25/03057 , H04L25/03343
摘要： In a method for performing equalization of a communication system, a predetermined signal can be transmitted from a transmitter unit to a receiver unit in a downchannel direction on a transmission line, for example as a pair of differential signals which simultaneously transition in opposite directions on respective signal conductors of the transmission line. At the receiver unit, an eye opening of the signal received from the transmission line can be analyzed to determine equalization information. Equalization information can be transmitted from the receiver unit to the transmitter unit in an upchannel direction on the transmission line and be received at the transmitter unit. Using received equalization information, a transmission characteristic of the transmitter unit can be adjusted.
摘要翻译：在用于执行通信系统的均衡的方法中，可以将预定信号从发射机单元发送到传输线上的下行信道方向上的接收机单元，例如作为在相应方向上同时沿相反方向转变的一对差分信号传输线的信号导体。在接收机单元，可以分析从传输线接收的信号的眼图，以确定均衡信息。均衡信息可以在传输线上的上行方向上从接收机单元发送到发射机单元，并在发射机单元处接收。使用接收到的均衡信息，可以调整发送单元的发送特性。

9. 发明授权

US07519130B2 Front end interface for data receiver 失效
标题翻译：数据接收机的前端接口
公开(公告)号：US07519130B2
公开(公告)日：2009-04-14
申请号：US10905705
申请日：2005-01-18
申请人： Louis L. Hsu , Matt R. Cordrey-Gale , James S. Mason , Philip J. Murfet , Karl D. Selander , Michael A. Sorna , Huihao Xu
发明人： Louis L. Hsu , Matt R. Cordrey-Gale , James S. Mason , Philip J. Murfet , Karl D. Selander , Michael A. Sorna , Huihao Xu
IPC分类号： H04L25/34
CPC分类号： H04L25/0274 , H04L25/0296
摘要： A data receiver is provided which includes a front end interface circuit having an alternating current (AC) transmission receiving mode and a direct current (DC) transmission receiving mode. The front end interface circuit includes an offset compensation circuit operable to compensate a DC voltage offset between a pair of differential signals input to the data receiver. The front end interface circuit further includes an AC/DC selection unit operable to switch between (a) the DC transmission receiving mode, and (b) the AC transmission receiving mode, such that the data receiver is operable in (i) the DC transmission mode in which the offset compensation circuit is disabled, (ii) the DC transmission mode in which the offset compensation circuit is enabled, (iii) the AC transmission mode in which the offset compensation circuit is disabled, and (iv) the AC transmission receiving mode in which the offset compensation circuit is enabled.
摘要翻译：提供一种数据接收器，其包括具有交流（AC）发送接收模式和直流（DC）发送接收模式的前端接口电路。前端接口电路包括偏移补偿电路，其可操作以补偿输入到数据接收器的一对差分信号之间的直流电压偏移。前端接口电路还包括可操作以在（a）直流发送接收模式和（b）交流发送接收模式之间切换的AC / DC选择单元，使得数据接收器可操作于（i）直流传输偏移补偿电路被禁用的模式，（ii）使能偏移补偿电路的直流传输模式，（iii）偏移补偿电路被禁用的AC传输模式，以及（iv）AC传输接收偏移补偿电路使能的模式。

10. 发明授权

US07295618B2 Automatic adaptive equalization method and system for high-speed serial transmission link 失效
标题翻译：自动自适应均衡方法和系统，用于高速串行传输链路
公开(公告)号：US07295618B2
公开(公告)日：2007-11-13
申请号：US10710064
申请日：2004-06-16
申请人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Jeremy K. Stephens , Huihao Xu
发明人： Louis L. Hsu , Karl D. Selander , Michael A. Sorna , Jeremy K. Stephens , Huihao Xu
IPC分类号： H04B3/00 , H04L25/00
CPC分类号： H04L25/03057 , H04L25/03343
摘要： A data communication system includes a transmitter unit and a receiver unit. The transmission unit has a transmission characteristic that is adjustable in accordance with equalization information. The transmission unit is operable to transmit a predetermined signal and the receiver unit is operable to receive the predetermined signal. The receiver unit is further operable to generate the equalization information by examining the eye opening of the received signal, and to transmit the equalization information to the transmitter unit.
摘要翻译：数据通信系统包括发射机单元和接收机单元。发送单元具有根据均衡信息可调的传输特性。发送单元可操作以发送预定信号，并且接收器单元可操作以接收预定信号。接收机单元进一步可操作以通过检查接收到的信号的眼图来产生均衡信息，并将均衡信息发送到发射机单元。

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