公开(公告)号：US5389889A

公开(公告)日：1995-02-14

申请号：US119851

申请日：1993-09-10

申请人： Jay M. Towne ,  Ravi Vig ,  Paul W. Latham, II

发明人： Jay M. Towne ,  Ravi Vig ,  Paul W. Latham, II

IPC分类号： G01R33/07 ,  G05F3/26 ,  H03F15/00

CPC分类号： G01R33/07 ,  G05F3/265

摘要： A temperature-compensated current source energizes a Hall element. The current source includes a voltage divider across the DC voltage supply busses and a differential amplifier arranged as a voltage follower which develops the output voltage across a reference resistor, creating a reference current which is amplified to generate a Hall energizing current. This results in a Hall element gain which is controllable over temperature. The temperature coefficient of the resistor can be chosen to compensate for the sensitivity temperature coefficient of a Hall element powered by a constant current source. Additionally, the temperature coefficient of the resistor may be chosen to compensate for the temperature coefficient of a magnet used to generate the magnetic field which the Hall element is intended to detect. The magnitude of the Hall current, and thus the Hall element gain, is directly proportional to the magnitude of the DC voltage supply. A trimmable current amplifier is used to compensate for the effects of manufacturing tolerances on the magnitude of the Hall current.

摘要翻译： 温度补偿电流源激励霍尔元件。 电流源包括直流电压源总线上的分压器和布置为电压跟随器的差分放大器，其在参考电阻器两端产生输出电压，产生被放大以产生霍尔通电电流的参考电流。 这导致可以在温度下控制的霍尔元件增益。 可以选择电阻器的温度系数来补偿由恒流源供电的霍尔元件的灵敏度温度系数。 此外，可以选择电阻器的温度系数来补偿用于产生霍尔元件旨在检测的磁场的磁体的温度系数。 霍尔电流的大小以及霍尔元件的增益与直流电压的幅度成正比。 可调节电流放大器用于补偿制造公差对霍尔电流幅度的影响。

公开(公告)号：US5619137A

公开(公告)日：1997-04-08

申请号：US600380

申请日：1996-02-12

申请人： Ravi Vig ,  Teri Tu ,  Paul W. Latham, II

发明人： Ravi Vig ,  Teri Tu ,  Paul W. Latham, II

IPC分类号： G01R33/07 ,  H03K3/0233 ,  G01R33/06 ,  G01R33/025 ,  H03K3/38

CPC分类号： G01R33/07 ,  H03K3/02337

摘要： A low power magnetic-field detector, of the kind for detecting an ambient magnetic field that is greater than a predetermined field strength, is comprised of a Hail element, a transducer-voltage amplifier, and a zero-crossing comparator, all connected in tandem. A clock and switch are used to chop the energizing current to the Hall element. Alternatively, the amplifier and comparator are also chopped to further reduce power consumption. A clockable flip flop is synchronously enabled for an instant at the end of each period of energizing the Hall element. The comparator output signal is transferred to the flip flop Q output and held there during each period of not energizing the Hall element. A Positive-feedback hysteresis circuit adds a bias voltage to the amplified Hall voltage and is applied to the comparator input to effect comparator hysteresis with memory covering clock-period portions when the Hall element is not energized. The comparator is thus transformed into a Schmitt trigger circuit having hysteresis memory, making it possible to chop the Hall element to substantially reduce the detector power consumption without loosing the hysteresis feature.

摘要翻译： 用于检测大于预定场强的环境磁场的低功率磁场检测器由Hail元件，传感器电压放大器和过零比较器组成，全部以串联方式连接 。 时钟和开关用于将激励电流切断到霍尔元件。 或者，放大器和比较器也被切碎以进一步降低功耗。 时钟触发器在霍尔元件通电的每个周期结束时立即同时使能。 比较器输出信号被传送到触发器Q输出并且在不给霍尔元件通电的每个周期期间保持在其中。 正反馈迟滞电路向放大的霍尔电压增加偏置电压，并将其施加到比较器输入，以在霍尔元件未通电时覆盖时钟周期部分的存储器来实现比较器滞后。 因此，比较器被转换成具有滞后存储器的施密特触发电路，使得可以将霍尔元件切断以显着降低检测器的功耗，而不会失去滞后特性。

公开(公告)号：US08508205B2

公开(公告)日：2013-08-13

申请号：US12728458

申请日：2010-03-22

申请人： Paul W. Latham, II ,  Stewart Kenly

发明人： Paul W. Latham, II ,  Stewart Kenly

IPC分类号： G05F1/40

CPC分类号： H02M3/1588 ,  H03K17/687 ,  H03K2217/0018 ,  Y02B70/1466

摘要： A method and apparatus for converting a DC voltage to a lower DC voltage, provides for conducting current from an input terminal, through an inductor to charge a capacitor connected to the inductor at an output terminal and to provide a varying range of load current from the output terminal, alternately switching the input terminal between a supply voltage and a ground potential to produce a desired voltage at the output terminal that is lower than the supply voltage, while providing the varying range of load current, and disconnecting the input terminal from both the supply voltage and the ground potential to reduce an increase in voltage at the output terminal caused by a substantial reduction in the load current, while current through the inductor adjusts in response to the reduced load current.

摘要翻译： 一种用于将DC电压转换为较低DC电压的方法和装置，提供来自输入端子的电流，通过电感器对连接到输出端子处的电感器的电容器进行充电，并提供来自 输出端子，交替地将输入端子切换到电源电压和地电位之间，以在输出端子处产生低于电源电压的期望电压，同时提供负载电流的变化范围，并且将输入端子与两端 电源电压和接地电位，以减少由于负载电流的显着降低引起的输出端子处的电压升高，而通过电感器的电流响应于减小的负载电流而调整。

公开(公告)号：US20120038807A1

公开(公告)日：2012-02-16

申请号：US13280455

申请日：2011-10-25

申请人： Bryan D. Ackland ,  Paul W. Latham, II ,  Joshua C. Park

发明人： Bryan D. Ackland ,  Paul W. Latham, II ,  Joshua C. Park

IPC分类号： H04N5/335

CPC分类号： H04N5/3575 ,  H04N5/3745

摘要： Methods and apparatus are provided for performing multiple correlated double sampling (CDS) operations on an imaging pixel, and in some cases on an array of imaging pixels, during a single integration cycle of the pixel(s). The multiple CDS operations may produce multiple CDS values, which may be processed in combination to produce a resulting value substantially free of various types of noise. The CDS operations may be performed using a CDS circuit including a single-ended charge amplifier having an input capacitor. The charge amplifier may also include a variable capacitance providing a variable gain. The variable capacitance may be provided by a feedback capacitor.

公开(公告)号：US20090267120A1

公开(公告)日：2009-10-29

申请号：US12109846

申请日：2008-04-25

申请人： Bryan D. Ackland ,  Conor S. Rafferty ,  Paul W. Latham, II

发明人： Bryan D. Ackland ,  Conor S. Rafferty ,  Paul W. Latham, II

IPC分类号： H01L31/113

CPC分类号： H01L27/14609 ,  H01L27/14612

摘要： MOS imaging pixels are described. The MOS imaging pixels may comprise bootstrapped source followers, having their bodies connected to their sources. The source followers of the MOS imaging pixels may be used to buffer a signal indicative of an amount of radiation incident on the pixel. MOS imagers are also described, which may comprise one or more MOS imaging pixels of the type described.

摘要翻译： 描述了MOS成像像素。 MOS成像像素可以包括引导源跟随器，其主体连接到它们的源。 可以使用MOS成像像素的源跟随器来缓冲表示入射在像素上的辐射量的信号。 还描述了MOS成像器，其可以包括所描述类型的一个或多个MOS成像像素。

公开(公告)号：US5258760A

公开(公告)日：1993-11-02

申请号：US912386

申请日：1992-07-13

申请人： Kristaan L. Moody ,  Paul W. Latham, II

发明人： Kristaan L. Moody ,  Paul W. Latham, II

IPC分类号： G06J1/00 ,  H03M1/50

CPC分类号： G06J1/00

摘要： Analog-signal integrators are described that have a transfer function containing a composite parameter that is the product of two parameters each of which is separately changeable, via application of digital programming signals. In a continuous analog-signal integrator the integrating capacitor is a programmable capacitor array, preceded in the feed back branch with a programmable voltage divider. In a discrete-time analog-signal integrator the integrating resistor is a switched-capacitor resistor including a programmable capacitor array that is preceded in the input circuit branch by a programmable voltage divider.

摘要翻译： 描述了模拟信号积分器，其具有包含作为两个参数的乘积的复合参数的传递函数，每个参数可以通过应用数字编程信号来单独变化。 在连续的模拟信号积分器中，积分电容器是可编程电容器阵列，在反馈分支中有一个可编程分压器。 在离散时间模拟信号积分器中，积分电阻是一个开关电容电阻，包括一个可编程电容阵列，在可编程分压器的输入电路分支之前。

公开(公告)号：US08253402B2

公开(公告)日：2012-08-28

申请号：US12622500

申请日：2009-11-20

申请人： Stewart Kenly ,  Paul W. Latham, II

发明人： Stewart Kenly ,  Paul W. Latham, II

IPC分类号： G05F1/44

CPC分类号： H02M3/1588 ,  H02M3/157 ,  Y02B70/1466

摘要： In one embodiment, the method of these teachings includes decomposing the output ripple voltage into its constituent components and utilizing the scale factor necessary for this decomposition to obtain the measure capacitance and ESR for a power supply/converter.

摘要翻译： 在一个实施例中，这些教导的方法包括将输出纹波电压分解成其组成部件并利用该分解所需的比例因子来获得电源/转换器的测量电容和ESR。

公开(公告)号：US08063422B2

公开(公告)日：2011-11-22

申请号：US12109846

申请日：2008-04-25

申请人： Bryan D. Ackland ,  Conor S. Rafferty ,  Paul W. Latham, II

发明人： Bryan D. Ackland ,  Conor S. Rafferty ,  Paul W. Latham, II

IPC分类号： H01L31/062

CPC分类号： H01L27/14609 ,  H01L27/14612

摘要： MOS imaging pixels are described. The MOS imaging pixels may comprise bootstrapped source followers, having their bodies connected to their sources. The source followers of the MOS imaging pixels may be used to buffer a signal indicative of an amount of radiation incident on the pixel. MOS imagers are also described, which may comprise one or more MOS imaging pixels of the type described.

摘要翻译： 描述了MOS成像像素。 MOS成像像素可以包括引导源跟随器，其主体连接到它们的源。 可以使用MOS成像像素的源跟随器来缓冲表示入射在像素上的辐射量的信号。 还描述了MOS成像器，其可以包括所描述类型的一个或多个MOS成像像素。

公开(公告)号：US07880454B2

公开(公告)日：2011-02-01

申请号：US11962571

申请日：2007-12-21

申请人： Paul W. Latham, II ,  Stewart Kenly ,  Laszlo Balogh

发明人： Paul W. Latham, II ,  Stewart Kenly ,  Laszlo Balogh

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： Systems and methods control timing of switches in power regulators and power amplifiers. The systems and methods monitor a switch node voltage and obtain rising and falling edges of signals obtained from the monitoring. The systems and methods utilize the rising and falling edges of switch drive signals and predetermined data to obtain delay times for subsequent drive signals.

摘要翻译： 系统和方法控制功率调节器和功率放大器中开关的时序。 系统和方法监测开关节点电压，并获得从监控获得的信号的上升沿和下降沿。 系统和方法利用开关驱动信号和预定数据的上升沿和下降沿来获得后续驱动信号的延迟时间。

公开(公告)号：US20100127682A1

公开(公告)日：2010-05-27

申请号：US12622500

申请日：2009-11-20

申请人： Stewart Kenly ,  Paul W. Latham, II

发明人： Stewart Kenly ,  Paul W. Latham, II

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M3/157 ,  Y02B70/1466

摘要： In one embodiment, the method of these teachings includes decomposing the output ripple voltage into its constituent components and utilizing the scale factor necessary for this decomposition to obtain the measure capacitance and ESR for a power supply/converter.

摘要翻译： 在一个实施例中，这些教导的方法包括将输出纹波电压分解成其组成部件并利用该分解所需的比例因子来获得电源/转换器的测量电容和ESR。