公开(公告)号：US06452696B1

公开(公告)日：2002-09-17

申请号：US09303226

申请日：1999-04-30

申请人： Zac Bogart ,  Brian Hart ,  James Browning

发明人： Zac Bogart ,  Brian Hart ,  James Browning

IPC分类号： G06K1500

CPC分类号： G06K15/00 ,  G06K15/1266 ,  H04N1/40043 ,  H04N1/4015 ,  H04N1/4078

摘要： A method and apparatus for normalizing the output of multiple light sources used to expose a photosensitive material to print high quality continuous tone and/or color images. Each of the multiple light sources is driven by a different signal weighted to cause all of the light sources to output light of intensity appropriate to produce a uniform image density over a wide range of image densities. In a preferred embodiment, each light source is driven by a different digital-to-analog converter (DAC) and/or timer circuit. A control processor supplies a multibit correction value tog each DAC and/or timer circuit to supply a drive signal to its associated light source weighted to cause all of the light sources to output light of substantially uniform intensity at a certain intensity level.

摘要翻译： 用于归一化用于曝光感光材料以打印高质量连续色调和/或彩色图像的多个光源的输出的方法和装置。 多个光源中的每一个被加权的不同信号驱动，以使所有的光源输出适合于在宽范围的图像密度上产生均匀图像浓度的强度的光。 在优选实施例中，每个光源由不同的数模转换器（DAC）和/或定时器电路驱动。 控制处理器为每个DAC和/或定时器电路提供多位校正值，以向其相关联的光源提供加权的驱动信号，以使得所有光源以一定强度水平输出基本上均匀强度的光。

公开(公告)号：US09068422B2

公开(公告)日：2015-06-30

申请号：US13344843

申请日：2012-01-06

申请人： Brian Hart ,  Cameron J. Berry

发明人： Brian Hart ,  Cameron J. Berry

IPC分类号： E21B33/035 ,  E21B33/037 ,  E21B33/038

CPC分类号： E21B33/037 ,  E21B33/035 ,  E21B33/038

摘要： A sealing mechanism is provided. In one embodiment, a system includes a connector configured to couple one or more flow-control valves to equipment installed at a well and an isolation sleeve configured to be retained by the connector. The isolation sleeve may include a seal and a hydraulically actuated piston disposed adjacent one another about a body of the isolation sleeve such that actuation of the piston engages the seal. Additional systems, devices, and methods are also disclosed.

摘要翻译： 提供了一种密封机构。 在一个实施例中，系统包括被配置为将一个或多个流量控制阀耦合到安装在井处的设备和被配置为由连接器保持的隔离套管的连接器。 隔离套管可以包括密封件和液压致动的活塞，其围绕隔离套筒的本体彼此相邻设置，使得活塞的致动接合密封件。 还公开了附加的系统，装置和方法。

公开(公告)号：US09042318B2

公开(公告)日：2015-05-26

申请号：US13547585

申请日：2012-07-12

申请人： Brian Hart ,  Raghuram Rangarajan

发明人： Brian Hart ,  Raghuram Rangarajan

IPC分类号： H04W4/00 ,  H04W72/08 ,  H04W72/02

CPC分类号： H04W72/082 ,  H04W72/02

摘要： Disclosed, in example embodiment herein, is an apparatus comprising an interface and channel selection logic coupled to the interface. The channel selection logic is operable to receive data representative of neighboring wireless devices to a wireless device occupying a channel for a plurality of channels via the interface. The channel selection logic is responsive to receiving the data representative of neighboring wireless devices occupying the plurality of channels to generate a graph for each of the plurality of channels, wherein vertices of the graph represent the wireless device and neighboring wireless devices occupying the channel and edges of the graph represent wireless devices with overlapping coverage areas. The channel selection logic selects the channel for the wireless device whose graph has the smallest radius.

摘要翻译： 在本文的示例实施例中公开了一种包括耦合到该接口的接口和信道选择逻辑的装置。 频道选择逻辑可操作以经由接口将代表相邻无线装置的数据接收到占用多个频道的频道的无线装置。 信道选择逻辑响应于接收代表占用多个信道的相邻无线设备的数据，以生成多个信道中的每个信道的图形，其中图形的顶点表示无线设备，并且邻近的无线设备占据信道和边缘 图表示具有重叠覆盖区域的无线设备。 信道选择逻辑为图形具有最小半径的无线设备选择信道。

公开(公告)号：US08905423B2

公开(公告)日：2014-12-09

申请号：US13776849

申请日：2013-02-26

申请人： Brian Hart

发明人： Brian Hart

IPC分类号： B60D1/52 ,  B62J9/00 ,  B62D63/06 ,  B62K27/00

CPC分类号： B62D63/061 ,  B62J9/00 ,  B62K27/003

摘要： Provided is an all-terrain trailer for hauling large objects over uneven landscapes. The trailer is capable of carrying items within its volume in both its deployed and stowed state. Deployed, the trailer is a basket shaped body with a pair of wheels removably secured via a removable axle. The trailer is attached to the lead vehicle using a removable trailer hitch linkage that is secured to the basket body via fasteners. In a stowed state, the tires and axle are stored within a storage area in a lower portion of the basket body. In one embodiment, a false bottom is placed over the storage area, creating a flat trailer bed that objects can be laid upon. The basket body is removably secured to the hood of a lead vehicle, thereby providing a carrying basket while the vehicle is in transit.

摘要翻译： 提供了一个全地形拖车，用于拖拉不平坦的景观上的大物体。 拖车能够在其部署和收起状态下携带其体积内的物品。 拖车是一个篮子形的主体，一对轮子通过一个可拆卸的轴可拆卸地固定。 拖车使用可移动的挂车联结装置连接到牵引车辆，该联动装置通过紧固件固定到筐体上。 在收起状态下，轮胎和轴被储存在篮体的下部的存储区域内。 在一个实施例中，将假底部放置在存储区域上方，形成可放置对象的平坦拖车床。 筐体可拆卸地固定到引导车辆的引擎盖上，从而在车辆行驶时提供载物篮。

公开(公告)号：US08669902B2

公开(公告)日：2014-03-11

申请号：US12875680

申请日：2010-09-03

申请人： Santosh Pandey ,  Brian Hart ,  Ilya Khasin

发明人： Santosh Pandey ,  Brian Hart ,  Ilya Khasin

IPC分类号： G01S3/02

CPC分类号： G01S5/04 ,  G01S5/021 ,  G01S5/0252 ,  G01S5/14 ,  H04W52/146 ,  H04W52/245 ,  H04W52/283

摘要： In an example embodiment, there is disclosed herein, an apparatus comprising an interface and location determination logic coupled with the interface. The location determination logic receives data representative of measured signal strengths for a wireless device from a plurality of receiving devices at known locations via the interface. The location determination logic determines an estimated location based on the measured signal strengths and a first transmit power for the wireless device. The location determination logic determines a revised transmit power for the wireless device based on the measured signal strengths from the plurality of devices at known locations and the estimated location. The location determination logic determines a revised estimated location based on the measured signal strengths and the revised transmit power for the wireless device.

摘要翻译： 在示例实施例中，这里公开了一种包括与接口耦合的接口和位置确定逻辑的装置。 位置确定逻辑经由接口从已知位置处的多个接收设备接收表示无线设备的测量信号强度的数据。 位置确定逻辑基于所测量的信号强度和无线设备的第一发射功率来确定估计位置。 位置确定逻辑基于来自已知位置处的多个设备的测量信号强度和估计位置来确定无线设备的经修改的发射功率。 位置确定逻辑基于测量的信号强度和无线设备的经修改的发射功率来确定修改的估计位置。

公开(公告)号：US20130175055A1

公开(公告)日：2013-07-11

申请号：US13541716

申请日：2012-07-04

申请人： Brian Hart ,  Cameron J. Berry ,  Dennis Harwood

发明人： Brian Hart ,  Cameron J. Berry ,  Dennis Harwood

IPC分类号： E21B33/03

CPC分类号： E21B33/03 ,  E21B33/038 ,  E21B33/043

摘要： Sealing mechanisms are provided. In one embodiment, a system includes a connector configured to couple one or more flow-control valves to equipment installed at a well and an isolation sleeve configured to be retained by the connector. The isolation sleeve may include a seal and a hydraulically actuated piston disposed adjacent one another about a body of the isolation sleeve such that actuation of the piston engages the seal. The isolation sleeve may also include a mechanically driven actuator ring, where the actuator ring energizes a seal against the bore of a tubing hanger. Additional systems, devices, and methods are also disclosed.

摘要翻译： 提供密封机构。 在一个实施例中，系统包括被配置为将一个或多个流量控制阀耦合到安装在井处的设备和被配置为由连接器保持的隔离套管的连接器。 隔离套管可以包括密封件和液压致动的活塞，其围绕隔离套筒的本体彼此相邻设置，使得活塞的致动接合密封件。 隔离套筒还可以包括机械驱动的致动器环，其中致动器环对靠在管道悬挂器的孔的密封件施力。 还公开了附加的系统，装置和方法。

公开(公告)号：US20110222524A1

公开(公告)日：2011-09-15

申请号：US12909307

申请日：2010-10-21

申请人： Allan THOMSON ,  David Stephenson ,  Brian Hart ,  Kasi Nalamalapu

发明人： Allan THOMSON ,  David Stephenson ,  Brian Hart ,  Kasi Nalamalapu

IPC分类号： H04H20/67 ,  H04J3/16

CPC分类号： H04H40/18 ,  H04H2201/60 ,  H04W74/0816 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144

摘要： In an example embodiment, there is disclosed a technique that enables a wireless device to achieve coexistence with an interfering source. The wireless device determines when interference is present and not present during a service period and reports the duration of interference free interval. At the end of an interference period, the wireless device can send a trigger signal indicating the start of an interference free interval to request data be sent to the wireless station until the expiration of the duration of the interference free interval. In particular embodiments, the signal sent by the wireless device can include an offset, for example a timing synchronization function (TSF) value, to indicate the end of the interference-free interval, perhaps computed so as allow for some clock drift.

摘要翻译： 在示例性实施例中，公开了一种能够使无线设备实现与干扰源共存的技术。 无线设备确定在服务期间何时存在和不存在干扰，并报告无干扰间隔的持续时间。 在干扰周期结束时，无线设备可以发送指示无干扰间隔的开始的触发信号，以请求发送到无线站的数据，直到无干扰间隔的持续时间期满。 在特定实施例中，由无线设备发送的信号可以包括偏移，例如定时同步功能（TSF）值，以指示无干扰间隔的结束，可能被计算以允许一些时钟漂移。

公开(公告)号：US20110058524A1

公开(公告)日：2011-03-10

申请号：US12556875

申请日：2009-09-10

申请人： Brian Hart ,  Raghuram Rangarajan

发明人： Brian Hart ,  Raghuram Rangarajan

IPC分类号： H04W72/12

CPC分类号： H04W72/082 ,  H04W72/02

摘要： Disclosed, in example embodiment herein, is an apparatus comprising an interface and channel selection logic coupled to the interface. The channel selection logic is operable to receive data representative of neighboring wireless devices to a wireless device occupying a channel for a plurality of channels via the interface. The channel selection logic is responsive to receiving the data representative of neighboring wireless devices occupying the plurality of channels to generate a graph for each of the plurality of channels, wherein vertices of the graph represent the wireless device and neighboring wireless devices occupying the channel and edges of the graph represent wireless devices with overlapping coverage areas. The channel selection logic selects the channel for the wireless device whose graph has the smallest radius

摘要翻译： 在本文的示例实施例中公开了一种包括耦合到该接口的接口和信道选择逻辑的装置。 频道选择逻辑可操作以经由接口将代表相邻无线装置的数据接收到占用多个频道的频道的无线装置。 信道选择逻辑响应于接收代表占用多个信道的相邻无线设备的数据，以生成多个信道中的每个信道的图形，其中图形的顶点表示无线设备，并且邻近的无线设备占据信道和边缘 图表示具有重叠覆盖区域的无线设备。 信道选择逻辑为图形具有最小半径的无线设备选择信道

公开(公告)号：US07821915B2

公开(公告)日：2010-10-26

申请号：US12130368

申请日：2008-05-30

申请人： Brian Hart ,  David J. Pignatelli ,  Eldad Perahia ,  Paul C. P. Dankoski

发明人： Brian Hart ,  David J. Pignatelli ,  Eldad Perahia ,  Paul C. P. Dankoski

IPC分类号： H04J11/00

CPC分类号： H04L25/0228 ,  H04L27/2647

摘要： An apparatus and a method to track the channel response for subcarriers in an OFDM receiver for a packet of information that includes a known transmitted part. The receiver has a signal-to-tone transformer to determine subcarriers corresponding to a received packet. The method stores a function of an initial estimate of the channel response for a subcarrier, and accepts a pre-decision constellation point value that is a post channel correction using a first estimate of the channel response. The method includes: makes a decision using the pre-decision constellation point value, re-modulates the decision to form a post-decision constellation point value, and forms a complex valued product of the function of the first estimate for the subcarrier and the complex-valued ratio of the pre-decision and post-decision values. This complex valued product forms a measure of the current channel estimate to use for updating the stored quantity.

摘要翻译： 一种用于跟踪OFDM接收机中用于包括已知传输部分的信息分组的子载波的信道响应的装置和方法。 接收机具有信号到音调的变压器来确定与接收的分组相对应的子载波。 该方法存储子载波的信道响应的初始估计的函数，并且接收使用信道响应的第一估计的作为后信道校正的预决策星座点值。 该方法包括：使用预决策星座点值进行判定，重新调制决策以形成后决策星座点值，并形成子载波和复合体的第一估计函数的复值乘积 估价和决策后价值的比值。 该复值产品形成用于更新存储数量的当前通道估计值的度量。

公开(公告)号：US07773499B2

公开(公告)日：2010-08-10

申请号：US11565745

申请日：2006-12-01

申请人： Brian Hart ,  John D. O'Sullivan

发明人： Brian Hart ,  John D. O'Sullivan

IPC分类号： H04B1/10 ,  H04L27/28 ,  H04J11/00

CPC分类号： H04L27/2647 ,  H04L25/0228

摘要： A method and apparatus for estimating channel characteristics in a multicarrier wireless receiver such as an OFDM wireless receiver. The method includes determining a channel estimate for each of a set of subcarriers by receiving multicarrier data as a result of a wireless transmission of data that includes a known signal, wherein the determining uses a part of the received data that corresponds to the known signal. The method further includes smoothing the channel estimates according to a smoothing filter to form smoothed channel estimates. The smoothed channel estimate for a particular subcarrier includes a contribution from the channel estimates of one or more subcarriers nearby the particular subcarrier take advantage of correlation that may exist between the particular subcarrier's channel and the channels of the one or more nearby subcarriers. In one version, the transmitted data includes at least one additional known signal, and each smoothed channel estimate is a smoothed version of the average of sets of channel estimates. In such a version, each set of channel estimates is determined using a respective part of the received data that corresponds to a corresponding one of the known signals.

摘要翻译： 用于估计诸如OFDM无线接收机的多载波无线接收机中的信道特性的方法和装置。 该方法包括通过作为包括已知信号的数据的无线传输的结果接收多载波数据来确定一组子载波中的每一个的信道估计，其中确定使用与已知信号相对应的接收数据的一部分。 该方法还包括根据平滑滤波器平滑信道估计以形成平滑信道估计。 对于特定子载波的平滑信道估计包括来自特定子载波附近的一个或多个子载波的信道估计的贡献利用可能存在于特定子载波信道和一个或多个附近子载波的信道之间的相关性。 在一个版本中，传输的数据包括至少一个附加的已知信号，并且每个平滑的信道估计是信道估计的平均值的平滑版本。 在这样的版本中，使用对应于已知信号中的相应一个的接收数据的相应部分来确定每组信道估计。