公开(公告)号：US20110150060A1

公开(公告)日：2011-06-23

申请号：US12645612

申请日：2009-12-23

Applicant: Dawei Huang ,  Deqiang Song ,  Drew G. Doblar ,  Agustin Del Alamo

Inventor： Dawei Huang ,  Deqiang Song ,  Drew G. Doblar ,  Agustin Del Alamo

IPC: H04B17/00 ,  H04L27/01

CPC classification number: H04L25/03057

Abstract: Various embodiments herein include one or more of systems, methods, software, and/or data structures to determine voltage margin for a high-speed serial data link. Advantageously, the margin determination may be made during normal operation of the data link (“mission mode”) such that the performance of the data link is not affected by the voltage margin measurements. That is, the margin measurements may be performed “on line” rather than “off line.” To facilitate the voltage margin measurement, a plurality of digital samples from an analog to digital converter (ADC) may be evaluated to determine the most probable bit values (i.e., digital 1's and 0's) that are represented by the digital samples. Then, a method may be used to remove or compensate for ISI effects from one or more of the digital samples, thereby providing an accurate representation of the voltage margin present in a data link. Subsequently, the voltage margin may be periodically monitored over time to detect degradation of the data link.

Abstract translation: 本文的各种实施例包括用于确定高速串行数据链路的电压裕度的系统，方法，软件和/或数据结构中的一个或多个。 有利地，可以在数据链路的正常操作期间（“任务模式”）进行裕量确定，使得数据链路的性能不受电压余量测量的影响。 也就是说，边沿测量可以“在线”而不是“离线”执行。为了便于测量电压裕度，可以评估来自模数转换器（ADC）的多个数字样本以确定最可能的位 由数字样本表示的值（即数字1和0）。 然后，可以使用一种方法去除或补偿来自一个或多个数字样本的ISI效应，从而提供数据链路中存在的电压余量的精确表示。 随后，可以随时间周期地监视电压裕度，以检测数据链路的劣化。

公开(公告)号：US07880568B2

公开(公告)日：2011-02-01

申请号：US11856147

申请日：2007-09-17

Applicant: Arif A. Amin ,  Baoqing Huang ,  Waseem Ahmad ,  Dawei Huang ,  Drew George Doblar

Inventor： Arif A. Amin ,  Baoqing Huang ,  Waseem Ahmad ,  Dawei Huang ,  Drew George Doblar

IPC: H03H11/48

CPC classification number: H03H11/50 ,  H03H11/1291 ,  H03H11/48 ,  H03H11/486

Abstract: An linear equalizer system for a transmission channel includes an active inductor with a tunable inductance and quality factor. The active inductor includes a transconducting element. A current steering digital to analog converter controls the flow of a bias current through the transconducting element to tune the active inductor.

Abstract translation: 用于传输通道的线性均衡器系统包括具有可调电感和品质因数的有源电感器。 有源电感器包括跨导元件。 电流转向数模转换器控制通过跨导元件的偏置电流的流动，以调谐有源电感器。

公开(公告)号：US07844236B1

公开(公告)日：2010-11-30

申请号：US11963632

申请日：2007-12-21

Applicant: Jianghui Su ,  Quang H. Trang ,  Dawei Huang

Inventor： Jianghui Su ,  Quang H. Trang ,  Dawei Huang

IPC: H04B7/08

CPC classification number: H04B7/0822

Abstract: An apparatus and method are provided to enable an adaptation unit to be shared among a plurality of receivers. The adaptation unit provides compensation values to each receiver to enable each receiver to compensate for the pulse response effect experienced by that receiver. By sharing an adaptation unit among a plurality of receivers rather than having a dedicated adaptation unit for each receiver, the chip space needed is significantly reduced since the number of adaptation units that need to be implemented is significantly reduced. In addition, the fewer number of adaptation units leads to less power consumption during operation. Overall, the sharing of the adaptation unit enables greater efficiency and improved scalability to be achieved.

Abstract translation: 提供了一种装置和方法，以使得能够在多个接收器之间共享适配单元。 适配单元向每个接收机提供补偿值，以使得每个接收机能够补偿该接收机所经历的脉冲响应效应。 通过在多个接收机中共享适配单元而不是为每个接收机设置专用的适配单元，所需的芯片空间显着减少，因为需要实现的自适应单元的数量显着减少。 此外，适应单元的数量越少，导致运行中的功耗越来越少。 总的来说，适配单元的共享使得能够实现更高的效率和改进的可扩展性。

公开(公告)号：US07839212B2

公开(公告)日：2010-11-23

申请号：US12327865

申请日：2008-12-04

Applicant: Dawei Huang ,  Arif Amin ,  Waseem Ahmad ,  Rajesh Kumar ,  Venkatesh Arunachalam

Inventor： Dawei Huang ,  Arif Amin ,  Waseem Ahmad ,  Rajesh Kumar ,  Venkatesh Arunachalam

IPC: H03F3/45

CPC classification number: H03G1/0029 ,  H03F3/45197 ,  H03F2200/411 ,  H03F2200/453 ,  H03F2203/45491 ,  H03F2203/45492 ,  H03F2203/45494 ,  H03F2203/45511 ,  H03F2203/45652 ,  H03F2203/45702 ,  H04L25/0272

Abstract: A two stage fully differential amplifier has been designed which works, in tandem with a TX-FIR, as a linear equalizer at low frequencies, not covered by the TX-FIR, and also acts as a linear amplifier at higher frequencies which are equalized by the TX-FIR. The amplifier as a frequency response which does not attenuate signals frequencies less than one twentieth of baud rate, creates gain peaking ion the region between one twentieth and one tenth of baud rate and maintains flat peak gain up to half of baud rate. Different aspects of the frequency response curve (such as dc gain, max gain and zero frequency) are completely programmable. Also, the differential amplifier has been designed from low power and process, voltage and temperature insensitive frequency response.

Abstract translation: 已经设计了一个两级全差分放大器，它与TX-FIR一起作为低频的线性均衡器工作，不被TX-FIR覆盖，并且还作为较高频率的线性放大器，它们被均衡 TX-FIR。 作为频率响应的放大器，其不会衰减信号频率小于波特率的二十分之一，从而使波峰率的二分之一到十分之一的区域产生增益峰值，并将平坦的峰值增益保持在一半以上的波特率。 频率响应曲线（如直流增益，最大增益和零频率）的不同方面是完全可编程的。 此外，差分放大器是从低功耗和工艺，电压和温度不敏感的频率响应设计的。

公开(公告)号：US20090316727A1

公开(公告)日：2009-12-24

申请号：US12144610

申请日：2008-06-23

Applicant: Dawei Huang ,  Dong J. Yoon ,  Osman Javed ,  Zuxu Qin ,  Deqiang Song ,  Daniel J. Beckman ,  Drew G. Doblar ,  Waseem Ahmad ,  Andrew Keith Joy ,  Simon Dennis Forey ,  William Franklin Leven ,  Nirmal C. Warke

Inventor： Dawei Huang ,  Dong J. Yoon ,  Osman Javed ,  Zuxu Qin ,  Deqiang Song ,  Daniel J. Beckman ,  Drew G. Doblar ,  Waseem Ahmad ,  Andrew Keith Joy ,  Simon Dennis Forey ,  William Franklin Leven ,  Nirmal C. Warke

IPC: H04J1/02

CPC classification number: H04L25/03343 ,  H04L7/0058

Abstract: A feedback module is defined to receive as input a set of data sample signals and a set of reference sample signals. Each of the data and reference sample signals is generated by sampling a differential signal having been transmitted through a FIR filter. The feedback module is defined to operate a respective post cursor counter for each post cursor of the FIR filter and update the post cursor counters based on the received sets of data and reference sample signals. Also, the feedback module is defined to generate a tap weight adjustment signal for a given tap weight of the FIR filter when a magnitude of a post cursor counter corresponding to the given tap weight is greater than or equal to a threshold value. An adaptation module is defined to adapt a reference voltage used to generate the reference sample signals to a condition of the differential signal.

Abstract translation: 定义了一个反馈模块，作为输入接收一组数据采样信号和一组参考采样信号。 通过对通过FIR滤波器发送的差分信号进行采样来生成数据和参考采样信号。 反馈模块被定义为对FIR滤波器的每个后光标操作相应的后光标计数器，并且基于所接收的数据集和参考采样信号来更新后光标计数器。 此外，反馈模块被定义为当对应于给定抽头权重的后光标计数器的大小大于或等于阈值时，产生用于FIR滤波器的给定抽头权重的抽头权重调整信号。 定义了适配模块，以将用于产生参考采样信号的参考电压调整到差分信号的状态。

公开(公告)号：US20090224806A1

公开(公告)日：2009-09-10

申请号：US12116329

申请日：2008-05-07

Applicant: Dawei Huang ,  Zuxu Qin ,  Drew G. Doblar ,  Waseem Ahmad ,  Dong Joon Yoon ,  Osman Javed

Inventor： Dawei Huang ,  Zuxu Qin ,  Drew G. Doblar ,  Waseem Ahmad ,  Dong Joon Yoon ,  Osman Javed

IPC: H03K5/153

CPC classification number: H04L7/0062

Abstract: An analog baud rate clock and data recovery apparatus includes a first track and hold circuit that delays a received signal by one unit interval to create an odd signal; a second track and hold circuit that delays the received signal by one unit interval to create an even signal; a first comparator circuit; and a second comparator circuit. The first track and hold circuit outputs the odd signal to the first comparator circuit and the second comparator circuit. The second track and hold circuit outputs the even signal to the first comparator circuit and the second comparator circuit. The first comparator adds the odd signal to the even signal and outputs a first potential timing error. The second comparator subtracts the odd signal and the even signal and outputs a second potential timing error signal. A desired timing error signal is derived from the first and second potential timing error signals. The desired timing error signal is used to determine whether signal sampling is early or late.

Abstract translation: 模拟波特率时钟和数据恢复装置包括第一跟踪和保持电路，其将接收到的信号延迟一个单位间隔以产生奇数信号; 第二轨道和保持电路，其将接收到的信号延迟一个单位间隔以产生均匀信号; 第一比较器电路; 和第二比较器电路。 第一跟踪和保持电路将奇数信号输出到第一比较器电路和第二比较器电路。 第二跟踪和保持电路将偶信号输出到第一比较器电路和第二比较器电路。 第一个比较器将奇数信号加到偶数信号，并输出第一个电位定时误差。 第二比较器减去奇数信号和偶数信号，并输出第二电位定时误差信号。 从第一和第二电位定时误差信号导出期望的定时误差信号。 所需的定时误差信号用于确定信号采样是早还是晚。

公开(公告)号：US20090074048A1

公开(公告)日：2009-03-19

申请号：US11856147

申请日：2007-09-17

Applicant: Arif A. Amin ,  Baoqing Huang ,  Waseem Ahmad ,  Dawei Huang ,  Drew George Doblar

Inventor： Arif A. Amin ,  Baoqing Huang ,  Waseem Ahmad ,  Dawei Huang ,  Drew George Doblar

IPC: H03H7/30 ,  H03H11/00

CPC classification number: H03H11/50 ,  H03H11/1291 ,  H03H11/48 ,  H03H11/486

Abstract: An linear equalizer system for a transmission channel includes an active inductor with a tunable inductance and quality factor. The active inductor includes a transconducting element. A current steering digital to analog converter controls the flow of a bias current through the transconducting element to tune the active inductor.

Abstract translation: 用于传输通道的线性均衡器系统包括具有可调电感和品质因数的有源电感器。 有源电感器包括跨导元件。 电流转向数模转换器控制通过跨导元件的偏置电流的流动，以调谐有源电感器。

公开(公告)号：US07251314B2

公开(公告)日：2007-07-31

申请号：US10134192

申请日：2002-04-29

Applicant: Dawei Huang

Inventor： Dawei Huang

IPC: H04M11/00 ,  H04M11/10 ,  H04L12/28

CPC classification number: H04M3/53325 ,  H04L51/00 ,  H04M11/10

Abstract: A method and system forwards voice messages from a sender to a receiver through a network. A voice-mail device records a phone number of a receiver and a voice message of a sender within a digital file. The voice message and phone number are encapsulated within an e-mail, which is forwarded through a network to another voice-mail device that acts as a gateway. The e-mail is opened to obtain the phone number of the receiver and the voice message, and the phone number of the receiver is dialed to deliver the voice message to the receiver via a telephone network.

Abstract translation: 方法和系统通过网络将语音消息从发送方转发到接收方。 语音邮件设备在数字文件中记录接收者的电话号码和发送者的语音消息。 语音留言和电话号码被封装在电子邮件中，该电子邮件通过网络转发到另一个充当网关的语音邮件设备。 电子邮件被打开以获得接收者的电话号码和语音消息，并且拨打接收者的电话号码以经由电话网络将语音消息传送到接收者。

公开(公告)号：US20070165673A1

公开(公告)日：2007-07-19

申请号：US11366211

申请日：2006-03-02

Applicant: Dawei Huang

Inventor： Dawei Huang

IPC: H04J3/24

CPC classification number: H04L1/008 ,  H04L1/0057 ,  H04L1/0063

Abstract: The present invention provides methods for reconstructing lost or corrupted packets. One embodiment of the method may include performing at least one parity operation on information associated with at least one first packet. The method may also include transmitting the information associated with at least one first packet and information indicative of the at least one parity operation. Another embodiment of the method may include accessing information associated with at least one first packet and information indicative of at least one parity operation performed on information associated with at least one first packet and at least one second packet. The method may also include determining information associated with the at least one second packet based on information associated with at least one first packet and information indicative of at least one parity operation performed on information associated with at least one first packet and the least one second packet.

Abstract translation: 本发明提供了重建丢失或损坏的分组的方法。 该方法的一个实施例可以包括对与至少一个第一分组相关联的信息执行至少一个奇偶校验操作。 该方法还可以包括发送与至少一个第一分组相关联的信息以及指示至少一个奇偶校验操作的信息。 该方法的另一实施例可以包括访问与至少一个第一分组相关联的信息以及指示对与至少一个第一分组和至少一个第二分组相关联的信息执行的至少一个奇偶校验操作的信息。 该方法还可以包括基于与至少一个第一分组相关联的信息确定与至少一个第二分组相关联的信息，以及指示对与至少一个第一分组和至少一个第二分组相关联的信息执行的至少一个奇偶校验操作的信息 。