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    • 1. 发明授权
    • Crosstalk reduction for a system of differential line pairs
    • 差分线对系统的串扰降低
    • US07230506B2
    • 2007-06-12
    • US10682617
    • 2003-10-09
    • William BealeJohn T. StonickJeffrey L. Sonntag
    • William BealeJohn T. StonickJeffrey L. Sonntag
    • H01P3/04
    • H05K1/0245H01P3/02H05K1/0228H05K1/0248H05K1/115H05K2201/044H05K2201/09236H05K2201/09263
    • A technique is presented for minimizing crosstalk between adjacent differential signal pairs in communications. A backplane embodiment wherein the backplane includes a plurality of differential signal line pairs, is presented. A first differential signal line pair can include a first differential signal line and a second differential signal line. The backplane can have the first differential signal line connected between first and second vias. The second differential signal line can be connected between third and fourth vias. A third signal line can be connected between fifth and sixth vias. The first via can be spatially adjacent to the fifth via such that a signal on the third signal line is coupled to the first differential signal line and the fourth via can be spatially located adjacent to the sixth via such that a signal on the third signal line is coupled to the second differential signal line.
    • 提出了一种用于最小化通信中相邻差分信号对之间的串扰的技术。 提出了背板实施例,其中背板包括多个差分信号线对。 第一差分信号线对可以包括第一差分信号线和第二差分信号线。 背板可以具有连接在第一和第二通孔之间的第一差分信号线。 第二差分信号线可以连接在第三和第四通孔之间。 第三个信号线可以连接在第五和第六个通孔之间。 第一通孔可以在空间上与第五通孔相邻,使得第三信号线上的信号耦合到第一差分信号线,并且第四通孔可以在空间上位于第六通孔附近,使得第三信号线上的信号 耦合到第二差分信号线。
    • 2. 发明授权
    • Receiver based decision feedback equalization circuitry and techniques
    • 基于接收机的判决反馈均衡电路和技术
    • US07263122B2
    • 2007-08-28
    • US10630991
    • 2003-07-29
    • John T. StonickJeffrey L. SonntagDaniel Keith Weinlader
    • John T. StonickJeffrey L. SonntagDaniel Keith Weinlader
    • H03H7/30H03H7/40H03K5/159
    • H04L25/03057H04L2025/0349
    • In one aspect, the present invention is directed to a technique of, and circuitry and system for enhancing the performance of data communication systems using receiver based decision feedback equalization circuitry. In one embodiment, the equalization circuitry and technique employs a plurality of data slicers (for example, two) to receive an analog input and output a binary value based on the reference or slicer level. The output of the data slicers is provided to logic circuitry to determine whether the analog input was a binary high or binary low. In those instances where the data slicers “agree” and both indicate either a high or a low, the logic circuitry outputs the corresponding binary value. In those instances where the data slicer do not “agree”—that is, where one data slicer indicates the input to be a binary or logic high value and the other data slicer indicates the input to be a binary or logic low value, in one embodiment, the logic circuitry outputs the complement of the previous binary value. In another embodiment, the logic circuitry selects the output from the slicer that changed its output from the previous binary value. In yet another embodiment where the slicers do not “agree”, the logic circuitry selects the decision of the data slicer with higher slicer value if the previous binary value was “high”, or selects the decision of the data slicer with the lower slicer value if the previous binary value was “low”. The data slicers employ slicer levels that may be fixed, pre-programmed, predetermined, preset, changed, modified, optimized, enhanced and/or programmed or re-programmed (for example, adaptively) before or during operation of the decision feedback equalization circuitry.
    • 一方面,本发明涉及一种使用基于接收机的判决反馈均衡电路来增强数据通信系统的性能的技术和电路和系统。 在一个实施例中,均衡电路和技术采用多个数据限幅器(例如,两个)来接收模拟输入并基于参考或限幅器电平输出二进制值。 数据限幅器的输出被提供给逻辑电路,以确定模拟输入是二进制高还是二进制低。 在数据限幅器“同意”并且都表示高电平或低电平的情况下,逻辑电路输出相应的二进制值。 在数据限幅器不“同意”的情况下,即一个数据限幅器将输入指示为二进制值或逻辑高电平值,另一个数据限幅器将输入指示为二进制值或逻辑低电平值, 逻辑电路输出先前二进制值的补码。 在另一个实施例中,逻辑电路选择来自限幅器的输出,其从先前的二进制值改变其输出。 在限幅器不“同意”的又一个实施例中,如果先前的二进制值为“高”,则逻辑电路选择具有较高限幅器值的数据限幅器的判定,或者选择具有较低限幅器值的数据限幅器的判定 如果先前的二进制值为“低”。 数据限幅器采用可在固定,预编程,预定,预设,改变,修改,优化,增强和/或编程或重新编程(例如,自适应地)自适应地在决策反馈均衡电路的操作期间的限幅器电平 。
    • 5. 发明申请
    • PRODUCING A DESIRED FREQUENCY USING A CONTROLLED OSCILLATOR WITH KNOWN TEMPERATURE SENSITIVITY
    • 使用具有已知温度灵敏度的控制振荡器生产所需的频率
    • US20110187462A1
    • 2011-08-04
    • US12774453
    • 2010-05-05
    • Jeffrey L. Sonntag
    • Jeffrey L. Sonntag
    • H03L7/00
    • H03L7/00
    • A controlled oscillator is tuned to produce a desired, temperature independent frequency. A first frequency ratio is determined between a first frequency of the output signal generated by the controlled oscillator and a frequency of an output signal from another oscillator. The first frequency is determined based on a sensed temperature. A desired frequency of the output signal of the controlled oscillator is used to determine a desired frequency ratio between the desired frequency and the frequency of the output signal from the other oscillator. The controlled oscillator is tuned and the frequency ratio measured until the tuning has caused the desired frequency ratio to be achieved, thereby causing the controlled oscillator to provide the desired frequency.
    • 受控振荡器被调谐以产生期望的与温度无关的频率。 在由受控振荡器产生的输出信号的第一频率和来自另一个振荡器的输出信号的频率之间确定第一频率比。 第一个频率是基于感测的温度来确定的。 使用受控振荡器的输出信号的期望频率来确定期望频率与来自另一个振荡器的输出信号的频率之间的期望频率比。 调节受控振荡器,并测量频率比,直到调谐已经达到所需的频率比,从而使受控振荡器提供所需的频率。
    • 7. 发明授权
    • Driver with improved power supply rejection
    • 驱动器具有改进的电源抑制
    • US07999523B1
    • 2011-08-16
    • US12201070
    • 2008-08-29
    • Aaron J. CaffeeJeffrey L. Sonntag
    • Aaron J. CaffeeJeffrey L. Sonntag
    • G05F1/10G05F1/44
    • H03K19/00361H03K3/356104
    • A technique reduces effects of power supply noise on a signal output by an integrated circuit output driver circuit powered at least partially by an external power supply. An integrated circuit includes a first circuit that provides a first version of a signal to be output referenced between a first regulated voltage and a first power supply voltage of an external power supply. A second circuit provides a second version of the signal to be output referenced between a second regulated voltage and a second power supply voltage of the external power supply. A third circuit provides a third version of the signal to be output referenced between the first power supply voltage and the second power supply voltage and based on the first and second versions of the signal to be output and power received from the external power supply.
    • 一种技术减少了由至少部分由外部电源供电的集成电路输出驱动器电路对电源噪声对信号输出的影响。 集成电路包括第一电路,其提供在外部电源的第一调节电压和第一电源电压之间参考的要输出的信号的第一版本。 第二电路提供要在外部电源的第二调节电压和第二电源电压之间参考的待输出信号的第二版本。 第三电路提供在第一电源电压和第二电源电压之间的输出信号的第三版本,并且基于待输出的信号的第一和第二版本以及从外部电源接收的功率。
    • 10. 发明授权
    • Apparatus and method for increasing density of run length limited block
codes without increasing error propagation
    • 增加运行长度限制块码密度而不增加误差传播的装置和方法
    • US5604497A
    • 1997-02-18
    • US540510
    • 1995-10-10
    • Jeffrey L. Sonntag
    • Jeffrey L. Sonntag
    • G06F3/06G06F5/08G06F11/10G11B20/14H03M7/42
    • G11B20/1426G11B2020/1434
    • The present invention is an apparatus and method for increasing the density of run-length-limited (RLL) block codes without increasing error propagation. By inserting a number of uncoded bytes (M) between each coded byte, the coding density is thereby increased. Starting with an RLL code with a block length (I) which is, for example, a multiple of 8, a number (M) of uncoded bytes may be inserted between each coded byte. The resulting density is: (I+8M)/(J+8M), wherein the resulting k constraint, of the (d,k,l) constraints is increased by 8M, and the resulting l constraint is increased by 4M. For example, starting with an RLL code having a coding density of 8/9 (I=8, J=9) and constraint set of (0,4,4), inserting one uncoded byte between each coded byte (M=1) results in a coding density of 16/17 which is 5.88% greater than the original 8/9 coding density. The constraint set is also increased to (0,12,8), where k is increased by 8 and l is increased by 4. The coding density is significantly increased without increasing the error propagation, since the size of the coded block is not increased.
    • 本发明是一种用于在不增加误差传播的情况下增加游程长度限制(RLL)块码的密度的装置和方法。 通过在每个编码字节之间插入多个未编码字节(M),从而增加了编码密度。 以具有例如8的倍数的块长度(I)的RLL码开始,可以在每个编码字节之间插入未编码字节数(M)。 所得到的密度为:(I + 8M)/(J + 8M),其中(d,k,l)约束的结果k约束增加8M,并且所得到的约束增加4M。 例如,从编码密度为8/9(I = 8,J = 9)和约束集(0,4,4)的RLL码开始,在每个编码字节(M = 1)之间插入一个未编码字节, 导致编码密度为16/17,比原始8/9编码密度大5.88%。 约束集也增加到(0,12,8),其中k增加8并且l增加4.编码密度显着增加而不增加误差传播,因为编码块的大小不增加 。