公开(公告)号：US07227916B2

公开(公告)日：2007-06-05

申请号：US10649427

申请日：2003-08-26

申请人： Charles R. Ruelke ,  Moshe Ben-Ayun ,  David J. Graham ,  Mark Rozental

发明人： Charles R. Ruelke ,  Moshe Ben-Ayun ,  David J. Graham ,  Mark Rozental

IPC分类号： H04L27/08

CPC分类号： H03G3/3078 ,  H03G3/001 ,  H03G3/3052

摘要： An automatic gain control (AGC) method and circuit (10) within a receiver uses a digital state machine (26) to implement the AGC function. independent from interaction with a host processor (36) and for multiple modulation protocols without duplicating circuitry. Modulation protocol and parameters for any of various gain responses are stored in a register (29). Multiple states, each corresponding to a predetermined range of RF input signal strength, are stored in the register. Each state contains parameters that determine a gain control signal for controlling a variable gain amplifier (16). The states are independent and may be selectively disabled to create asymmetric responses. Within any state, an adaptable number of iterations may be set to implement a different update rate or step size after a predetermined number of closed loop gain change iterations has not resulted in a transition to a state that represents a desired output gain.

摘要翻译： 接收机内的自动增益控制（AGC）方法和电路（10）使用数字状态机（26）实现AGC功能。 独立于与主处理器（36）的交互和不具有复制电路的多调制协议。 任何各种增益响应的调制协议和参数都存储在寄存器（29）中。 每个对应于RF输入信号强度的预定范围的多个状态被存储在寄存器中。 每个状态包含确定用于控制可变增益放大器（16）的增益控制信号的参数。 状态是独立的，并且可以被选择性地禁用以产生不对称响应。 在任何状态下，在预定数量的闭环增益变化迭代尚未导致转换到表示期望的输出增益的状态之后，可设置可适应数量的迭代以实现不同的更新速率或步长。

公开(公告)号：US4188793A

公开(公告)日：1980-02-19

申请号：US818807

申请日：1977-07-25

申请人： Richard W. Watson ,  William J. Grant ,  David J. Graham

发明人： Richard W. Watson ,  William J. Grant ,  David J. Graham

IPC分类号： B01D5/00 ,  C07C17/38 ,  F25J3/06 ,  F17C7/02 ,  F17C13/00 ,  F25D15/00

CPC分类号： C07C17/38 ,  B01D5/0012 ,  B01D5/0051 ,  B01D5/0057 ,  B01D5/0084

摘要： In a process for condensing the vapor of a volatile liquid, such as vinyl chloride monomer, a gaseous mixture comprising the vapor of the volatile liquid and a non-flammable gas, such as nitrogen, is heat exchanged with a liquid refrigerant or vapor evolved therefrom, or both, the heat exchange being performed such that condensate of the vapor of the volatile liquid is produced at a directly or indirectly controlled temperature which is between the boiling point of the volatile liquid at atmospheric pressure and the boiling point of the refrigerant at atmospheric pressure and which is also between the boiling and freezing points of the volatile liquid at the prevailing pressure at which the condensate is formed, the non-flammable gas remaining uncondensed; the condensate is collected; the uncondensed gas is warmed to a temperature, and then vented to the atmosphere.

摘要翻译： 在将诸如氯乙烯单体的挥发性液体的蒸气冷凝的过程中，包含挥发性液体的蒸汽和不可燃气体（例如氮气）的气体混合物与液体制冷剂或从其中产生的蒸气进行热交换 或两者，进行热交换，使得在直接或间接控制的温度下产生挥发性液体的蒸汽的冷凝物，该温度在大气压下在挥发性液体的沸点和制冷剂在大气压下的沸点之间 并且在形成冷凝物的主要压力下也在挥发性液体的沸点和凝固点之间，不可燃气体保持不冷凝; 收集冷凝水; 将未冷凝的气体加热至温度，然后排放到大气中。

公开(公告)号：US20100169436A1

公开(公告)日：2010-07-01

申请号：US12347198

申请日：2008-12-31

申请人： David J. Graham ,  William P. Alberth ,  Daniel J. Declerck ,  William Reinisch

发明人： David J. Graham ,  William P. Alberth ,  Daniel J. Declerck ,  William Reinisch

IPC分类号： G06F15/16 ,  G10L15/26

CPC分类号： G06Q10/107 ,  G10L15/26

摘要： A method of operating a communication device to facilitate a user to control multiple concurrent communication sessions. In operation, the communication device receives a plurality of incoming communications from a plurality of recipients, in which each recipient corresponds to at least one of the multiple concurrent communication sessions. The communication device further detects a user response from a user interface of the communication device in response to receiving the incoming communications. Next, the communication device correlates the user response with at least one of the received incoming communications or previously received communications corresponding to the recipients. Further, the communication device selects at least one of the plurality of recipients based on the correlation and sends the user response to the selected at least one of the plurality of recipients.

摘要翻译： 一种操作通信设备以便于用户控制多个并发通信会话的方法。 在操作中，通信设备从多个接收者接收多个入局通信，其中每个接收者对应于多个并发通信会话中的至少一个。 响应于接收到的通信，通信设备还从通信设备的用户界面进一步检测用户响应。 接下来，通信设备将用户响应与接收到的对应的接收的进入通信或先前接收到的通信中的至少一个相关联。 此外，通信设备基于相关性来选择多个接收者中的至少一个，并将用户响应发送给所选择的多个接收者中的至少一个。

公开(公告)号：US06225848B1

公开(公告)日：2001-05-01

申请号：US09515286

申请日：2000-02-29

申请人： Keith A. Tilley ,  Raul Salvi ,  Enrique Ferrer ,  Atif A. Meraj ,  David J. Graham

发明人： Keith A. Tilley ,  Raul Salvi ,  Enrique Ferrer ,  Atif A. Meraj ,  David J. Graham

IPC分类号： H03K508

CPC分类号： H03F1/304 ,  H03F2200/372

摘要： A DC offset correction loop (200) utilizes a sign bit generator (204), binary search stage (206), and a digital-to-analog converter (208) in its feedback path to correct for DC offsets at the input of a gain stage (202). When a correction value is obtained, it is applied and held (524) to compensate for the DC offset. When a programming event occurs (534), such as detecting an increase in DC offset beyond a threshold, detecting a significant temperature change, or passage of time, a new DC offset correction cycle is initiated.

摘要翻译： 直流偏移校正回路（200）利用符号位产生器（204），二进制搜索级（206）和数模转换器（208）在其反馈路径中校正增益输入端的直流偏移 阶段（202）。 当获得校正值时，施加和保持（524）以补偿DC偏移。 当发生编程事件（534）时，例如检测DC偏移的增加超过阈值，检测明显的温度变化或时间的流逝，则开始新的DC偏移校正周期。

公开(公告)号：US06288609B1

公开(公告)日：2001-09-11

申请号：US09515742

申请日：2000-02-29

申请人： Daniel E. Brueske ,  David J. Graham

发明人： Daniel E. Brueske ,  David J. Graham

IPC分类号： H03G320

CPC分类号： H03G1/0023 ,  H03G3/3052

摘要： A gain controllable low noise amplifier (LNA) (200) with automatic linearity enhancement utilizes an amplifier stage (203) for amplifying a radio frequency (RF) input signal and a dynamically controllable feedback loop amplifier stage (205) for providing negative feedback to the feedback amplifier. A bias controller (213) is coupled to the dynamically controllable feedback loop amplifier stage (203) for monitoring a receiver automatic gain control (AGC) system (211) and providing a dynamic bias to the feedback loop amplifier stage (205) to improve linearity to the LNA in the presence of strong on-channel and off-channel signal conditions.

摘要翻译： 具有自动线性度增强的增益可控低噪声放大器（200）利用放大级（203）来放大射频（RF）输入信号和动态可控的反馈环放大器级（205），用于向 反馈放大器。 偏置控制器（213）耦合到动态可控的反馈环路放大器级（203），用于监视接收机自动增益控制（AGC）系统（211）并向反馈环路放大器级（205）提供动态偏置以改善线性度 在存在强信道和非通道信号条件的情况下向LNA发送。

公开(公告)号：US5742899A

公开(公告)日：1998-04-21

申请号：US735926

申请日：1996-10-24

申请人： Dane E. Blackburn ,  David J. Graham

发明人： Dane E. Blackburn ,  David J. Graham

IPC分类号： H03G3/20 ,  H03G3/30 ,  H04B1/16

CPC分类号： H03G3/3052 ,  H03G3/3036

摘要： A fast attack Automatic Gain Control (AGC) loop (100) having a first feedback loop with selectable responses shapes and a second feedback loop with selectable responses shapes. Response shape selection is based, in part, upon fast pull-down, overshoot recovery, and normal mode loop operation.

摘要翻译： 具有具有可选响应形状的第一反馈回路和具有可选响应形状的第二反馈回路的快速攻击自动增益控制（AGC）回路（100）。 响应形状选择部分基于快速下拉，过冲恢复和正常模式循环操作。

公开(公告)号：US4283212A

公开(公告)日：1981-08-11

申请号：US27588

申请日：1979-04-06

申请人： David J. Graham ,  John W. Armond

发明人： David J. Graham ,  John W. Armond

IPC分类号： B01D53/04 ,  F25J3/00

CPC分类号： B01D53/04 ,  B01D2253/102 ,  B01D2253/106 ,  B01D2253/108 ,  B01D2256/24 ,  B01D2257/708 ,  B01D2259/40098 ,  B01D2259/402 ,  B01D2259/41 ,  Y10S62/908

摘要： A portion of a component of a gas stream is condensed with the remaining non-condensed gas stream being passed to an adsorber. The remainder of the component in the non-condensed stream is adsorbed in the adsorber and in a later stage of the adsorber cycle, the adsorbed component is desorbed and supplied to the inlet of a condenser together with the gas stream to promote condensation of the component by providing an increased concentration of the component in the gas stream.

摘要翻译： 一部分气流的组分被冷凝，剩余的未冷凝的气流被传送到吸附器。 非冷凝流中的其余部分被吸附在吸附器中，并且在吸附器循环的后期阶段，被吸附的组分被解吸并与气流一起供应到冷凝器的入口，以促进组分 通过提供气体流中组分的增加的浓度。

公开(公告)号：US08204957B2

公开(公告)日：2012-06-19

申请号：US12347198

申请日：2008-12-31

申请人： David J. Graham ,  William P. Alberth ,  Daniel J. Declerck ,  William Reinisch

发明人： David J. Graham ,  William P. Alberth ,  Daniel J. Declerck ,  William Reinisch

IPC分类号： G06F15/16

CPC分类号： G06Q10/107 ,  G10L15/26

摘要： A method of operating a communication device to facilitate a user to control multiple concurrent communication sessions. In operation, the communication device receives a plurality of incoming communications from a plurality of recipients, in which each recipient corresponds to at least one of the multiple concurrent communication sessions. The communication device further detects a user response from a user interface of the communication device in response to receiving the incoming communications. Next, the communication device correlates the user response with at least one of the received incoming communications or previously received communications corresponding to the recipients. Further, the communication device selects at least one of the plurality of recipients based on the correlation and sends the user response to the selected at least one of the plurality of recipients.

摘要翻译： 一种操作通信设备以便于用户控制多个并发通信会话的方法。 在操作中，通信设备从多个接收者接收多个入局通信，其中每个接收者对应于多个并发通信会话中的至少一个。 响应于接收到的通信，通信设备还从通信设备的用户界面进一步检测用户响应。 接下来，通信设备将用户响应与接收到的对应的接收的进入通信或先前接收到的通信中的至少一个相关联。 此外，通信设备基于相关性来选择多个接收者中的至少一个，并将用户响应发送给所选择的多个接收者中的至少一个。

公开(公告)号：US06564039B1

公开(公告)日：2003-05-13

申请号：US09515728

申请日：2000-02-29

申请人： Richard B. Meador ,  Ronald H. Deck ,  David J. Graham ,  David H. Minasi ,  Brian Shelton

发明人： Richard B. Meador ,  Ronald H. Deck ,  David J. Graham ,  David H. Minasi ,  Brian Shelton

IPC分类号： H04B140

CPC分类号： H04B1/406 ,  H03L7/23 ,  H04B2001/0491

摘要： A frequency generation circuit includes an oscillator (403), a comparator (413) coupled to the oscillator, a first divider (407) coupled to the comparator, a PLL (400) coupled to the first divider, a second divider (422) coupled to the PLL, a first multiplexor (409) coupled to the second divider, a third divider (408) coupled to the comparator and the first multiplexor, a second multiplexor (410) coupled to the comparator and the reference clock PLL, a fourth divider (411) coupled to the second multiplexor, a fifth divider (412) coupled to the comparator, and a seventh divider (450) coupled to the comparator. A method of operating a transceiver includes using the frequency generation circuit to provide a first clock signal, a second clock signal, a first reference frequency, and a second reference frequency for a first component, a second component, a third component, and a fourth component, respectively, of the transceiver.

摘要翻译： 频率发生电路包括振荡器（403），耦合到振荡器的比较器（413），耦合到比较器的第一分频器（407），耦合到第一分频器的PLL（400），耦合到第一分频器 耦合到所述PLL，耦合到所述第二分频器的第一多路复用器（409），耦合到所述比较器和所述第一多路复用器的第三分频器（408），耦合到所述比较器和所述参考时钟PLL的第二多路复用器（410） （411），耦合到所述第二多路复用器，耦合到所述比较器的第五分频器（412）和耦合到所述比较器的第七分频器（450）。 操作收发器的方法包括使用频率产生电路为第一组件，第二组件，第三组件和第四组件提供第一时钟信号，第二时钟信号，第一参考频率和第二参考频率 分别为收发器。

公开(公告)号：US06324230B1

公开(公告)日：2001-11-27

申请号：US09515741

申请日：2000-02-29

申请人： David J. Graham ,  Dane E. Blackburn ,  Raul Salvi ,  Keith Tilley

发明人： David J. Graham ,  Dane E. Blackburn ,  Raul Salvi ,  Keith Tilley

IPC分类号： H04L2708

CPC分类号： H03G3/3078 ,  H03G3/3052 ,  H04B1/406

摘要： A multimode fast attack automatic gain control (AGC) circuit (100) includes an analog feedback loop and a digital feedback loop. The analog feedback loop is switched into the amplifier stage (102) by a first switch (126) when dynamic control of the gain attenuation is desired. The digital feedback loop is switched into the amplifier stage when attenuation is to be adjusted periodically, such as between sequentially received time slots in a time division multiple access (TDMA) mode of communication.

摘要翻译： 多模式快速攻击自动增益控制（AGC）电路（100）包括模拟反馈回路和数字反馈回路。 当需要增益衰减的动态控制时，模拟反馈环路由第一开关（126）切换到放大器级（102）。 当周期性地调整衰减时，例如在时分多址（TDMA）通信模式中的顺序接收的时隙之间，数字反馈环路被切换到放大器级。