公开(公告)号：US08306892B1

公开(公告)日：2012-11-06

申请号：US12270756

申请日：2008-11-13

申请人： William H. Gross ,  Ramin Toloui

发明人： William H. Gross ,  Ramin Toloui

IPC分类号： G06Q40/00

CPC分类号： G06Q40/06

摘要： An embodiment of a computer-implemented method of generating a financial index includes storing in a computer memory a regional weight for each of one or more regions, and, for each of the regions, a category weight for each of one or more categories of financial instruments issued from the region. At least one of the regional weights does not reflect a market capitalization of the respective region and may be based on, e.g., a gross domestic product for the region. The method also includes programmatically selecting one or more constituent financial instruments for the categories of financial instruments issued from the regions. In some implementations, the constituents do not include equity instruments. The method also includes programmatically calculating, for the categories and regions, subindices based at least in part on the constituent financial instruments, and determining the financial index based at least in part on the subindices, the category weights, and the regional weights.

摘要翻译： 计算机实现的产生财务指数的方法的实施例包括在计算机存储器中存储一个或多个区域中的每一个的区域权重，并且对于每个区域，对于一个或多个财务类别中的每一个的类别权重 该地区发行的仪器。 区域权重中的至少一个不反映相应区域的市值，并且可以以例如该地区的国内生产总值为基础。 该方法还包括以编程方式选择从各区域发行的金融工具类别的一个或多个组成金融工具。 在某些实施中，组成部分不包括权益工具。 该方法还包括至少部分地基于组成的金融工具对类别和区域的分类和区域进行程序计算，以及至少部分地基于子指标，类别权重和区域权重来确定财务指标。

公开(公告)号：US5825228A

公开(公告)日：1998-10-20

申请号：US592976

申请日：1996-01-29

申请人： William H. Gross

发明人： William H. Gross

IPC分类号： H03F3/30 ,  H03K17/66 ,  H03K17/60 ,  H03F3/26

CPC分类号： H03K17/667 ,  H03F3/3067 ,  H03F2203/45094 ,  H03F2203/45232 ,  H03F2203/45242 ,  H03F2203/45366

摘要： Low quiescent power, high output power, rail-to-rail output stage circuits and methods are provided. The output stages are capable of providing output voltages that are substantially equal to the supply voltages (i.e., within one V.sub.CE SAT of both supply voltages) without a substantial increase in output circuit complexity and without a substantial increase in quiescent current. The output stages operate by providing a direct path for the drive signal to the output sinking transistor, and an additional, separate path for the drive signal to the output sourcing transistor. The sinking and sourcing paths are separated by a PNP transistor that gradually turns off during sinking to isolate that portion of the circuit so that the drive current to the sinking transistor is not reduced. Additional embodiments are provided where additional components are utilized to further increase the maximum sink and source currents without a significant increase in quiescent current or reduction in output swing.

摘要翻译： 提供低静态功率，高输出功率，轨到轨输出级电路和方法。 输出级能够提供基本上等于电源电压（即，在两个电源电压的一个VCE + E，uns + EE SAT）内的输出电压，而输出电路复杂度并没有显着增加 当前。 输出级通过为输出吸收晶体管提供驱动信号的直接路径以及用于驱动信号到输出源晶体管的附加单独路径来进行操作。 吸收和引出路径被PNP晶体管分离，PNP晶体管在吸收期间逐渐关闭，以隔离电路的该部分，使得到沉没晶体管的驱动电流不会降低。 提供了另外的实施例，其中使用附加组件来进一步增加最大吸收和电流电流，而不会明显增加静态电流或降低输出摆幅。

公开(公告)号：US5327095A

公开(公告)日：1994-07-05

申请号：US20619

申请日：1993-02-19

申请人： William H. Gross ,  John W. Wright

发明人： William H. Gross ,  John W. Wright

IPC分类号： H03F3/68 ,  H03F3/72 ,  H03F1/36

CPC分类号： H03F3/72 ,  H03F3/68

摘要： A method and circuit for increasing the output impedance of an inactive amplifier is provided. The method and circuit allows an increased number of amplifiers to be coupled in parallel to a single transmission line for distributing a plurality of video or other electrical signals to a remote location. The method and circuit increasing the impedance of an amplifier feedback network during inactive operation using a bootstrapping technique (i.e., by driving the feedback network) so as to increase the overall impedance of the amplifier during such operation.

摘要翻译： 提供了一种用于增加非放大器的输出阻抗的方法和电路。 该方法和电路允许将更多数量的放大器并联耦合到单个传输线，以将多个视频或其他电信号分配到远程位置。 该方法和电路使用自举技术（即，通过驱动反馈网络）在不活动操作期间增加放大器反馈网络的阻抗，以便在这种操作期间增加放大器的总体阻抗。

公开(公告)号：US5316964A

公开(公告)日：1994-05-31

申请号：US988342

申请日：1992-12-08

申请人： William H. Gross

发明人： William H. Gross

IPC分类号： H01L21/329 ,  H01L21/761 ,  H01L21/70

CPC分类号： H01L29/66166 ,  H01L21/761 ,  Y10S148/136

摘要： An integrated circuit having diffused resistors formed in a low impurity concentration isolation region.

摘要翻译： 具有形成在低杂质浓度隔离区域的扩散电阻器的集成电路。

公开(公告)号：US4935704A

公开(公告)日：1990-06-19

申请号：US329260

申请日：1989-03-27

申请人： William H. Gross

发明人： William H. Gross

IPC分类号： H03F1/30 ,  H03F1/32 ,  H03F3/30

CPC分类号： H03F3/3067 ,  H03F1/307 ,  H03F1/3217

摘要： An improved direct-coupled transistor amplifier circuit includes a pair of complementary conductivity type output transistors that are quiescently biased to slightly conductive state to provide low distortion amplification and temperature stabilized operating conditions. A pair of complementary conductivity type input transistors receive bias current having a value that is substantially matched to the change with temperature of base-emitter voltage of an input transistor divided by the value of a resistor connecting the emitter of the input transistor to receive the bias current.

摘要翻译： 改进的直接耦合晶体管放大器电路包括一对互补导电型输出晶体管，其静态偏置到略微导通状态以提供低失真放大和温度稳定的操作条件。 一对互补导电型输入晶体管接收具有与输入晶体管的基极 - 发射极电压的温度的变化基本匹配的值的偏置电流，除以连接输入晶体管的发射极的电阻的值以接收偏置 当前。

公开(公告)号：US4499432A

公开(公告)日：1985-02-12

申请号：US439001

申请日：1982-11-04

申请人： William H. Gross ,  Tadashi Sakurai

发明人： William H. Gross ,  Tadashi Sakurai

IPC分类号： H03F1/02 ,  H03F3/04

CPC分类号： H03F1/0233

摘要： An operational power amplifier having a bootstrap power output stage is designed to provide maximum dynamic range over a wide range of supply voltages. A control circuit in the form of a switched current mirror is added to the amplifier biasing circuit. At supply voltage higher than a predetermined threshold, the amplifier bias is adjusted to provide one half of this voltage at the output terminal. For supply voltages less than the threshold value, the output voltage is made less than half supply voltage.

摘要翻译： 具有自举功率输出级的运算功率放大器设计成能够在宽范围的电源电压下提供最大的动态范围。 将开关电流镜形式的控制电路加到放大器偏置电路上。 在高于预定阈值的电源电压下，调节放大器偏置以在输出端提供该电压的一半。 对于小于阈值的电源电压，输出电压小于电源电压的一半。

公开(公告)号：US5517143A

公开(公告)日：1996-05-14

申请号：US346395

申请日：1994-11-29

申请人： William H. Gross

发明人： William H. Gross

IPC分类号： G05F3/26 ,  H03K3/00

CPC分类号： G05F3/265

摘要： Current mirror circuits and methods, and an amplifier using same, are provided in which the output of the current mirror is reduced to zero when the input current falls below a predetermined threshold. An offset current is subtracted from the input (or reference) current at input currents below the threshold. Otherwise, the offset current source is turned off. Thus, the output current can be reduced to zero, even if there is a small input current, without distorting the input-output relationship over the majority of the range of operation of the current mirror. An amplifier with two current-feedback complementary input stages (or fader circuit) is also provided which includes a gain control circuit that uses the current mirror circuits of the present invention to ensure that each input can be fully attenuated. The gain control circuit causes one of the two inputs to be fully attenuated when a control voltage passes one of two thresholds that are offset by predetermined amounts from the corresponding endpoints of the control voltage range. The amplifier thus provides an accurate, undistorted gain value for a given control voltage over the majority of its range of operation.

摘要翻译： 提供电流镜电路和方法以及使用其的放大器，其中当输入电流低于预定阈值时，电流镜的输出减小到零。 从低于阈值的输入电流的输入（或参考）电流中减去偏移电流。 否则，偏移电流源关闭。 因此，即使存在小的输入电流，输出电流可以减小到零，而不会使电流镜的大部分操作范围内的输入 - 输出关系失真。 还提供具有两个电流反馈互补输入级（或推子电路）的放大器，其包括使用本发明的电流镜像电路的增益控制电路，以确保每个输入可以被完全衰减。 当控制电压通过从控制电压范围的相应端点偏移预定量的两个阈值中的一个时，增益控制电路使两个输入中的一个完全衰减。 因此，放大器在其大部分操作范围内为给定的控制电压提供准确的，未失真的增益值。

公开(公告)号：US4963802A

公开(公告)日：1990-10-16

申请号：US329261

申请日：1989-03-27

申请人： William H. Gross ,  James B. Cecil

发明人： William H. Gross ,  James B. Cecil

IPC分类号： H02P7/00

CPC分类号： H02P7/03

摘要： A logic-controlled circuit superimposes a constant voltage across an actuator or motor load that is driven by a bridge-type amplifier to control the constant velocity operation of such load in response to an applied logic signal that may also disable the bridge-type amplifier.

摘要翻译： 逻辑控制电路跨越由桥式放大器驱动的致动器或电动机负载叠加恒定电压，以响应于也可以禁用桥式放大器的施加的逻辑信号来控制这种负载的恒定速度操作。

公开(公告)号：US4910477A

公开(公告)日：1990-03-20

申请号：US329263

申请日：1989-03-27

申请人： William H. Gross

发明人： William H. Gross

IPC分类号： H03F3/30

CPC分类号： H03F3/3081

摘要： A bridge-type linear amplifier includes separate local feedback networks on each half-side channel of the amplifier and an additional feedback network between channels of the amplifier in order to correct for differences in current gains of output transistors and requisite drive currents.

摘要翻译： 桥式线性放大器在放大器的每个半侧通道上包括单独的局部反馈网络以及放大器通道之间的附加反馈网络，以便校正输出晶体管的电流增益和必需的驱动电流的差异。

公开(公告)号：US4827223A

公开(公告)日：1989-05-02

申请号：US171035

申请日：1988-03-21

申请人： William H. Gross

发明人： William H. Gross

IPC分类号： H03F3/20 ,  H03F3/30

CPC分类号： H03F3/3076

摘要： An improved direct-coupled amplifier includes a push-pull pair of transistors in an output stage that provides high output current on low quiescent current. Each such output transistor is driven by a push-pull pair of driver transistors that receives the applied signal at proper bias levels provided by forward-biased diodes (or diodes and gain element) to provide high input impedance to low output impedance signal buffering with wide bandwidth at high power levels.

摘要翻译： 改进的直接耦合放大器包括在低静态电流下提供高输出电流的输出级中的推挽对晶体管。 每个这样的输出晶体管由推挽驱动晶体管驱动，驱动晶体管以正向偏置二极管（或二极管和增益元件）提供的适当偏置电平接收施加的信号，以向宽输出阻抗信号缓冲提供高输入阻抗 带宽在高功率水平。