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1. 发明授权

US07508896B2 Circuit and method for dynamically adjusting a filter bandwidth 失效
标题翻译：用于动态调整滤波器带宽的电路和方法
公开(公告)号：US07508896B2
公开(公告)日：2009-03-24
申请号：US11022883
申请日：2004-12-28
申请人： Terence L. Johnson , Timothy R. Miller
发明人： Terence L. Johnson , Timothy R. Miller
IPC分类号： H03D3/24
CPC分类号： H03L7/093 , H03D13/00 , H03L7/0991 , H04L7/0004 , H04L7/033
摘要： A tracking circuit (100) is provided for controlling a locally-generated clock. A receive channel (110) in the tracking circuit receives an incoming signal and a local clock, generates a local signal based on the local clock, and compares the local signal and the incoming signal to generate a data signal and an unfiltered phase error signal. A loop filter (120) filters the unfiltered phase error signal to provide a filtered phase error signal. A numerically controlled oscillator (140) generates a correction clock based on the filtered phase error signal. And a filter control circuit (160) provides one or more filter control signals to control operational parameters of the loop filter. The correction clock is provided to the receive channel to modify at least one of the phase and frequency of the local clock. In addition, a sample switch (125) may also be provided to sample the unfiltered phase error signal.
摘要翻译：提供跟踪电路（100）用于控制本地产生的时钟。跟踪电路中的接收通道（110）接收输入信号和本地时钟，基于本地时钟产生本地信号，并且比较本地信号和输入信号以产生数据信号和未滤波的相位误差信号。环路滤波器（120）对未滤波的相位误差信号进行滤波以提供滤波的相位误差信号。数控振荡器（140）基于滤波的相位误差信号产生校正时钟。并且滤波器控制电路（160）提供一个或多个滤波器控制信号以控制环路滤波器的操作参数。校正时钟被提供给接收通道以修改本地时钟的相位和频率中的至少一个。此外，还可以提供采样开关（125）以对未滤波的相位误差信号进行采样。

2. 发明授权

US6047025A Method and apparatus for equallization in an asymmetric digital aubscriber line communications system 失效
标题翻译：用于非对称数字订户通信系统中的均衡的方法和装置
公开(公告)号：US6047025A
公开(公告)日：2000-04-04
申请号：US23061
申请日：1998-02-13
申请人： Terence L. Johnson , Albert H. Higashi
发明人： Terence L. Johnson , Albert H. Higashi
IPC分类号： H03H21/00 , H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H03H21/0012
摘要： An equalizer (106, 146) for use in systems such as an asymmetric digital subscriber line (ADSL) transceiver (5) reduces the number of calculations required for updating the equalizer coefficients. The equalizer (106, 146) takes advantage of the substantially symmetrical phase and amplitude distortion of the signal constellation, which causes both the amplitude and the phase relationship of the calculated error term for each constellation point to be equal. Instead of performing a full complex multiplication, the equalizer (106, 146) uses some but not all of the product terms between the real and imaginary components of the calculated error term and the conjugate of the received data estimate in the coefficient update calculation. The result is then scaled to account for the missing terms. The resulting equalizer (106, 146) requires fewer calculations for coefficient updating.
摘要翻译：用于诸如非对称数字用户线（ADSL）收发器（5）的系统中的均衡器（106,146）减少了更新均衡器系数所需的计算次数。均衡器（106,146）利用信号星座图的基本对称的相位和幅度失真，这导致每个星座点的计算出的误差项的幅度和相位关系都相等。代替执行全复数乘法，均衡器（106,146）在系数更新计算中使用计算出的误差项的实部和虚分量之间的一些但不是全部乘积项和接收到的数据估计的共轭。然后将结果缩小以考虑缺少的术语。所得到的均衡器（106,146）需要更少的系数更新计算。

3. 发明授权

US5903599A Transceiver and method for reporting state transitions in a communication system 失效
标题翻译：用于报告通信系统中的状态转换的收发器和方法
公开(公告)号：US5903599A
公开(公告)日：1999-05-11
申请号：US744078
申请日：1996-11-04
申请人： Terence L. Johnson , Jeffrey P. Gleason , Howard E. Levin , Peter R. Molnar , Jean-Louis Dolmeta
发明人： Terence L. Johnson , Jeffrey P. Gleason , Howard E. Levin , Peter R. Molnar , Jean-Louis Dolmeta
IPC分类号： G06F11/30 , G06F11/34 , H04L29/06 , H04B1/38
CPC分类号： G06F11/3055 , G06F11/3013 , G06F11/302 , G06F11/3024 , G06F11/3636 , H04L29/06 , G06F11/3466
摘要： A host processor (22) in a communication system (10) identifies a level of program visibility for reporting predetermined activation state changes, and signals a communications transceiver (24) to begin an initialization process. The communications transceiver (24) begins executing a series of states (51-55, 61-64) for initializing the communication system (10). A determination is made by the transceiver (24) whether a state change has occurred. A state change is identified and reported to a host processor (22) based on the program visibility select level.
摘要翻译：通信系统（10）中的主处理器（22）识别用于报告预定的激活状态改变的程序可见度级别，并且通知通信收发器（24）开始初始化处理。通信收发器（24）开始执行用于初始化通信系统（10）的一系列状态（51-55,61-64）。由收发器（24）确定是否发生了状态改变。基于节目可见性选择级别来识别状态改变并将其报告给主机处理器（22）。

4. 发明授权

US07362840B2 Circuit and method for adjusting timing alignment using programmable codes 有权
标题翻译：使用可编程代码调整定时对准的电路和方法
公开(公告)号：US07362840B2
公开(公告)日：2008-04-22
申请号：US10990367
申请日：2004-11-18
申请人： Terence L. Johnson , Timothy R. Miller , Nitin Sharma
发明人： Terence L. Johnson , Timothy R. Miller , Nitin Sharma
IPC分类号： H04L7/00 , H04L25/00 , H04L25/40
CPC分类号： H04B1/7183 , H04B1/71632
摘要： A method is provided for adjusting timing alignment in which a receiver generates a plurality of imbalanced correction codes (1310), and square waves both having the same frequency. The receiver mixes the imbalanced correction codes with the square waves to create a mixed signal (1320), and integrates the mixed signal over a correction code period to generate a signal power value (1330). The receiver adjusts a phase of the square wave in a first direction when the signal power value satisfies a first criterion (1340, 1350), and in a second direction when the signal power value satisfies a second criterion (1340, 1360). Each imbalanced correction code is symmetrical. And a total integrated value of one of the imbalanced correction codes over the correction code period is either above a first threshold, or below a second threshold, the first threshold being greater than or equal to the second threshold.
摘要翻译：提供了一种用于调整接收器产生多个不平衡校正码（1310）的定时对准的方法以及具有相同频率的方波。接收器将不平衡校正码与方波混合以产生混合信号（1320），并且通过校正码周期对混合信号进行积分以产生信号功率值（1330）。当信号功率值满足第一标准（1340,1350）时，接收器在第一方向上调整方波的相位，并且当信号功率值满足第二标准（1340,1360）时，第二方向调整方波的相位。每个不平衡校正码是对称的。并且在校正码周期中不平衡校正码之一的总积分值大于第一阈值或低于第二阈值，第一阈值大于或等于第二阈值。

5. 发明授权

US5835536A Method and apparatus for reducing peak-to-average requirements in multi-tone communication circuits 失效
标题翻译：用于减少多音通信电路中的峰值与平均要求的方法和装置
公开(公告)号：US5835536A
公开(公告)日：1998-11-10
申请号：US383026
申请日：1995-02-02
申请人： Michael R. May , Terence L. Johnson , Matthew A. Pendleton
发明人： Michael R. May , Terence L. Johnson , Matthew A. Pendleton
IPC分类号： H04L27/26 , H04L27/34 , H04K1/10
CPC分类号： H04L27/3411 , H04L27/2614 , H04L27/2618
摘要： A symbol generator (804) generates a time-domain discrete multi-tone symbol (810). A magnitude comparator (812) compares the magnitude of the time-domain discrete multi-tone symbol (810) with a magnitude threshold. When the magnitude of the time-domain discrete multi-tone symbol (810) compares unfavorably to the magnitude threshold, a magnitude adjusting symbol (816) is added to the time-domain discrete multi-tone symbol (810) such that the magnitude of the time-domain discrete multi-tone symbol (810) is reduced, thereby reducing the peak-to-average requirements (PAR).
摘要翻译：符号生成器（804）生成时域离散多色调符号（810）。幅度比较器（812）将时域离散多音调符号（810）的幅度与幅度阈值进行比较。当时域离散多音调符号（810）的大小与幅度阈值不利地比较时，幅度调整符号（816）被加到时域离散多音调符号（810），使得降低了时域离散多音调符号（810），从而降低了峰值平均要求（PAR）。

6. 发明授权

US07532687B2 Dual stage automatic gain control in an ultra wideband receiver 失效
标题翻译：超宽带接收机的双级自动增益控制
公开(公告)号：US07532687B2
公开(公告)日：2009-05-12
申请号：US11036132
申请日：2005-01-18
申请人： Terence L. Johnson
发明人： Terence L. Johnson
IPC分类号： H04L27/08
CPC分类号： H03G3/3078
摘要： A method (500) and an apparatus (300) are presented for processing a signal in a receiver in accordance with Ultra Wideband (UWB) protocol. The received signal is acquired during a first preamble portion (411) of a data frame associated with the UWB protocol. During acquisition a first Automatic Gain Control (AGC) operation (606) is performed associated with a noise component of the signal. A second AGC operation (608) associated with a pulse component of the signal is performed after the acquiring the signal during a second preamble portion (413).
摘要翻译：呈现方法（500）和装置（300），用于根据超宽带（UWB）协议处理接收机中的信号。在与UWB协议相关联的数据帧的第一前导码部分（411）期间获取所接收的信号。在采集期间，执行与信号的噪声分量相关联的第一自动增益控制（AGC）操作（606）。在第二前导码部分（413）中获取信号之后，执行与信号的脉冲分量相关联的第二AGC操作（608）。

7. 发明授权

US07224711B2 System and method for the mitigation of spectral lines in an ultrawide bandwidth transceiver 有权
标题翻译：在超宽带收发器中减轻频谱线路的系统和方法
公开(公告)号：US07224711B2
公开(公告)日：2007-05-29
申请号：US10902021
申请日：2004-07-30
申请人： Terence L. Johnson , John W. McCorkle , Phuong T. Huynh
发明人： Terence L. Johnson , John W. McCorkle , Phuong T. Huynh
IPC分类号： H04B1/69
CPC分类号： H04B1/71632 , H04B1/7174
摘要： A method and an apparatus are provided for mitigating spectral lines in a wireless signal. First a code word is generated that is made up of a plurality of binary or ternary encoded pulses. Then a plurality of code-word-modulated wavelets are generated in response to the code word. These wavelets can be Gaussian monopulses, repeated cycles of a sine wave, or other shaped impulse signals. The plurality of code-word-modulated wavelets are then modulated with a bit of transmit data to form a plurality of data-modulated wavelets. This modulation serves to whiten the signals since the transmit data is effectively random. Finally, the plurality of data-modulated wavelets are transmitted to a remote device.
摘要翻译：提供了一种减轻无线信号中的频谱线的方法和装置。首先，生成由多个二进制或三进制编码脉冲组成的码字。然后响应于码字产生多个码字调制小波。这些小波可以是高斯单脉冲，正弦波的重复周期或其他成形脉冲信号。然后用一些发送数据调制多个码字调制小波，以形成多个数据调制小波。该调制用于使信号变白，因为发送数据是有效的随机的。最后，将多个数据调制小波发送到远程设备。

8. 发明授权

US4503887A Pilot-operated dual flow rate valve 失效
标题翻译：先导式双流量阀
公开(公告)号：US4503887A
公开(公告)日：1985-03-12
申请号：US340616
申请日：1982-01-19
申请人： Terence L. Johnson , Lance Guthreau
发明人： Terence L. Johnson , Lance Guthreau
IPC分类号： F16K31/40 , F16K31/145
CPC分类号： F16K31/402 , Y10T137/86405 , Y10T137/87499 , Y10T137/87507
摘要： A valve including a pilot valve body having an inlet port, an outlet port, and an orifice between the ports surrounded by a valve seat. A valve member is movable into and out of engagement with the valve seat to close and open the valve, respectively. The valve member can be oscillated to permit a reduced rate of flow through the valve. The valve member may be carried by the armature of an electrical solenoid; when the solenoid is energized by full wave AC power, the valve is held open in a stable condition, and when the solenoid is energized by half wave AC power, the valve member oscillates. The valve is used as the pilot valve of a main valve, wherein when the valve member is oscillated to permit reduced rate flow through the pilot valve, the main valve remains closed.
摘要翻译：一种阀，包括具有入口，出口和在由阀座包围的端口之间的孔口的先导阀体。阀构件可移动地进入和离开与阀座接合，以分别关闭和打开阀。阀构件可以摆动以允许减小通过阀的流量。阀构件可以由电螺线管的电枢承载; 当螺线管通过全波交流电源通电时，阀门处于稳定状态保持打开状态，当螺线管通过半波交流电源通电时，阀门振荡。阀用作主阀的先导阀，其中当阀构件振荡以允许通过先导阀的流量减小时，主阀保持关闭。

9. 发明授权

US5909463A Single-chip software configurable transceiver for asymmetric communication system 失效
标题翻译：用于非对称通信系统的单芯片软件可配置收发器
公开(公告)号：US5909463A
公开(公告)日：1999-06-01
申请号：US741634
申请日：1996-11-04
申请人： Terence L. Johnson , Peter R. Molnar , Howard E. Levin , Jeffrey P. Gleason , Robin Wiprud , Sujit Sudhaman , Jody Everett , Michael R. May , Carlos A. Greaves , Mathew A. Rybicki , Matthew A. Pendleton , John M. Porter
发明人： Terence L. Johnson , Peter R. Molnar , Howard E. Levin , Jeffrey P. Gleason , Robin Wiprud , Sujit Sudhaman , Jody Everett , Michael R. May , Carlos A. Greaves , Mathew A. Rybicki , Matthew A. Pendleton , John M. Porter
IPC分类号： H04L5/14 , H04L27/00 , H04L27/26 , H04B1/38 , H04B1/56 , H04L5/16
CPC分类号： H04L5/143 , H04L27/0002 , H04L27/2626 , H04L27/2647 , H04Q2213/13034 , H04Q2213/1305 , H04Q2213/13103 , H04Q2213/1319 , H04Q2213/13199 , H04Q2213/1332
摘要： A transceiver (5) for an asymmetric communication system such as asymmetric digital subscriber line (ADSL) includes a configuration register (71) defining operation at either a central office (CO) or a remote terminal (RT). The configuration register (71) includes a control bit (72) for selecting either CO or RT mode. The transceiver (5) includes a signal processing module (70) configured according to the state of the control bit (72). For example, a digital interface (70) converts transmit data into transmit symbols and converts received symbols into receive data. The digital interface (70) uses a large memory (158) as a buffer in the transmit path and a small memory (160) as a buffer in the receive path in CO mode. In RT mode, the digital interface (70) uses the small memory (160) in the transmit path and the large memory (158) in the receive path. The selective configuration allows a single integrated circuit to be used in both CO and RT equipment.
摘要翻译：用于诸如非对称数字用户线（ADSL）的非对称通信系统的收发器（5）包括定义在中心局（CO）或远程终端（RT）处的操作的配置寄存器（71）。配置寄存器（71）包括用于选择CO或RT模式的控制位（72）。收发器（5）包括根据控制位（72）的状态配置的信号处理模块（70）。例如，数字接口（70）将发送数据转换为发送符号并将接收到的符号转换为接收数据。数字接口（70）使用大容量存储器（158）作为发送路径中的缓冲器，并且在CO模式中使用作为接收路径中的缓冲器的小存储器（160）。在RT模式中，数字接口（70）使用发送路径中的小存储器（160）和接收路径中的大存储器（158）。选择性配置允许在CO和RT设备中使用单个集成电路。

10. 发明授权

US5781728A Flexible asymmetrical digital subscriber line ADSL transmitter, remote terminal using same, and method therefor 失效
标题翻译：灵活的非对称数字用户线ADSL发射机，远程终端使用相同，及其方法
公开(公告)号：US5781728A
公开(公告)日：1998-07-14
申请号：US616819
申请日：1996-03-15
申请人： Mathew A. Rybicki , Michael R. May , Matthew A. Pendleton , Terence L. Johnson , Peter R. Molnar
发明人： Mathew A. Rybicki , Michael R. May , Matthew A. Pendleton , Terence L. Johnson , Peter R. Molnar
IPC分类号： H04J11/00 , H04L5/06 , H04L27/00 , H04M3/00 , H04M11/00 , H04Q11/04 , H04J1/02
CPC分类号： H04Q11/0435 , H04L27/0002 , H04L5/06 , H04Q2213/13034 , H04Q2213/13107 , H04Q2213/1313 , H04Q2213/1319 , H04Q2213/13199 , H04Q2213/13209 , H04Q2213/13376 , H04Q2213/13396
摘要： A flexible asymmetrical digital subscriber line (ADSL) transmitter is able to operate simultaneously with integrated services digital network (ISDN) terminal equipment (TE) using a common telephone line (18). The ADSL transmitter changes the frequency content of a frequency-encoded ADSL signal (104) so that its frequency content does not overlap the frequency content of the ISDN TE signal. A corresponding ADSL receiver located within a central office (CO) adapts to the changed frequency content, allowing the ADSL signal to be transmitted over the telephone line without substantial loss of signal integrity. In one embodiment, an ADSL transmitter (100) converts ADSL symbols making up the frequency-encoded ADSL signal (104) into a corresponding time domain signal. The transmitter (100) then interpolates the time domain signal and high pass filters the interpolated signal. This high pass filtered signal is then converted to analog form, bandpass filtered, and driven onto the telephone line (18).
摘要翻译：灵活的非对称数字用户线（ADSL）发射机能够使用公用电话线（18）与综合业务数字网（ISDN）终端设备（TE）同时工作。 ADSL发射机改变频率编码ADSL信号（104）的频率内容，使其频率内容不与ISDN TE信号的频率内容重叠。位于中心局（CO）内的对应的ADSL接收机适应于改变的频率内容，允许ADSL信号通过电话线传输，而不会显着损失信号完整性。在一个实施例中，ADSL发射机（100）将构成频率编码的ADSL信号（104）的ADSL符号转换成对应的时域信号。然后，发射机（100）内插时域信号，并对内插信号进行高通滤波。然后将该高通滤波信号转换为模拟形式，经过滤波，并被驱动到电话线路（18）上。

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