公开(公告)号：US20110176434A1

公开(公告)日：2011-07-21

申请号：US12689840

申请日：2010-01-19

申请人： Santosh Pandey ,  Allan Thomson ,  Brian Hart ,  Jagdish Girimaji

发明人： Santosh Pandey ,  Allan Thomson ,  Brian Hart ,  Jagdish Girimaji

IPC分类号： H04L12/26

CPC分类号： H04W48/16 ,  H04W36/08 ,  H04W64/00

摘要： In an example embodiment, a wireless device is configured to associate with a first access point on a first frequency. The wireless device listens for a predefined frame, which may be sent by neighboring access points or other wireless devices. When the wireless device receives a signal comprising a predefined frame, the wireless device acquires a parameter, such as signal strength, for the signal. The wireless device sends the parameter for the signal to the first access point.

摘要翻译： 在示例实施例中，无线设备被配置为在第一频率上与第一接入点相关联。 无线设备侦听可由相邻接入点或其他无线设备发送的预定义帧。 当无线设备接收到包括预定义帧的信号时，无线设备获取信号的诸如信号强度的参数。 无线设备将信号的参数发送到第一接入点。

公开(公告)号：US07359311B1

公开(公告)日：2008-04-15

申请号：US10418694

申请日：2003-04-18

申请人： Milind D. Paranjpe ,  Brian Hart ,  David J. Pignatelli ,  Ender Ayanoglu ,  Eldad Perahia ,  Philip J. Ryan ,  Bretton Lee Douglas ,  Uri Parker

发明人： Milind D. Paranjpe ,  Brian Hart ,  David J. Pignatelli ,  Ender Ayanoglu ,  Eldad Perahia ,  Philip J. Ryan ,  Bretton Lee Douglas ,  Uri Parker

IPC分类号： H04J11/00

CPC分类号： H04L27/2647 ,  H04L1/20 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0228

摘要： A method, apparatus, and carrier medium for determining channel state information (CSI) in an OFDM radio receiver. The receiver is for receiving packets of OFDM data as a result of OFDM data being transmitted. The method includes forming an estimate of the channels of the subcarriers for received OFDM data to provide frequency responses of the channels of the subcarriers, and forming a measure of quality (“channel state information,” “CSI”) for the channels of the subcarriers based on the relative strength of the frequency responses. The forming of the CSI does not require estimating the relative amount of noise or interference in each channel. The formed CSI is used in demodulating and decoding received OFDM data.

摘要翻译： 一种用于在OFDM无线电接收机中确定信道状态信息（CSI）的方法，装置和载波介质。 该接收机是用于接收OFDM数据的数据包作为发送OFDM数据的结果。 该方法包括形成用于接收的OFDM数据的子载波的信道的估计，以提供子载波的信道的频率响应，并且形成用于子载波的信道的质量度量（“信道状态信息”，“CSI”） 基于频率响应的相对强度。 CSI的形成不需要估计每个信道中的相对噪声或干扰量。 所形成的CSI用于解调和解码接收的OFDM数据。

公开(公告)号：US07315533B2

公开(公告)日：2008-01-01

申请号：US11102509

申请日：2005-04-08

申请人： David M. Theobold ,  Lu Qian ,  Bretton Lee Douglas ,  Brian Hart

发明人： David M. Theobold ,  Lu Qian ,  Bretton Lee Douglas ,  Brian Hart

IPC分类号： H04Q7/24

CPC分类号： H04W16/18

摘要： A method, apparatus, and carrier medium carrying instructions to assign frequency channels and transmit powers for a plurality of access points of a wireless network. The method includes, until there are no more access points to which to assign a transmit power and frequency channel, selecting a next current access point, determining for a set of at least one transmit power for a set of at least one frequency channel a measure of the quality of the sub-network formed by the current access point and all already-assigned access points an evaluation metric indicative of the quality of the sub-network, and assigning to the current access point the transmit power and frequency channel that minimizes the measure of the quality of the sub-network.

摘要翻译： 一种方法，装置和载波介质，其携带用于为无线网络的多个接入点分配频率信道和发射功率的指令。 该方法包括，直到没有更多的接入点来分配发射功率和频率信道，选择下一个当前接入点，确定一组至少一个频率信道的至少一个发射功率的度量 由当前接入点和所有已经分配的接入点形成的子网络的质量指示表示子网质量的评估度量，并且向当前接入点分配使最小化的发射功率和频率信道 测量子网的质量。

公开(公告)号：US20070259292A1

公开(公告)日：2007-11-08

申请号：US11780234

申请日：2007-07-19

申请人： John Krawczyk ,  James Mrvos ,  Girish Patil ,  Jason Vanderpool ,  Brian Hart ,  Christopher Money ,  Jeanne Singh ,  Karthik Vaideeswaran

发明人： John Krawczyk ,  James Mrvos ,  Girish Patil ,  Jason Vanderpool ,  Brian Hart ,  Christopher Money ,  Jeanne Singh ,  Karthik Vaideeswaran

IPC分类号： G03C5/00 ,  H01L21/461 ,  H01L21/302

CPC分类号： B41J2/1603 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1645 ,  B81B2201/052 ,  B81C1/00531

摘要： A method of etching a semiconductor substrate. The method includes the steps of applying a photoresist etch mask layer to a device surface of the substrate. A select first area of the photoresist etch mask is masked, imaged and developed. A select second area of the photoresist etch mask layer is irradiated to assist in post etch stripping of the etch mask layer from the select second area. The substrate is etched to form fluid supply slots through a thickness of the substrate. At least the select second area of the etch mask layer is removed from the substrate, whereby mask layer residue formed from the select second area of the etch mask layer is significantly reduced.

摘要翻译： 蚀刻半导体衬底的方法。 该方法包括以下步骤：将光致抗蚀剂蚀刻掩模层施加到衬底的器件表面。 光刻胶蚀刻掩模的选择第一区被掩蔽，成像和显影。 照射光致抗蚀剂蚀刻掩模层的选择的第二区域以辅助蚀刻掩模层从选择的第二区域的后蚀刻剥离。 蚀刻基板以形成通过基板的厚度的流体供给槽。 至少蚀刻掩模层的选择第二区域从衬底去除，由此从蚀刻掩模层的选择的第二区域形成的掩模层残留物显着减少。

公开(公告)号：US20070206547A1

公开(公告)日：2007-09-06

申请号：US11369159

申请日：2006-03-06

申请人： Xiaohong Gong ,  Brian Hart ,  Bretton Douglas

发明人： Xiaohong Gong ,  Brian Hart ,  Bretton Douglas

IPC分类号： H04Q7/24

CPC分类号： H04W40/02 ,  H04L45/122 ,  H04L45/125 ,  H04L45/20 ,  H04W40/246 ,  H04W74/08 ,  H04W84/18

摘要： Methods, apparatuses and systems directed to facilitating load balancing and bandwidth allocation in wireless mesh networks. Generally, according to one implementation of the present invention, routing nodes implement a contention-based media access mechanism and self-allocate bandwidth within a wireless mesh network by dynamically modifying one or more contention-based transmission control parameters. The routing nodes determine a hop count and adjust one or more contention parameters based at least in part on the hop count.

摘要翻译： 旨在促进无线网状网络中的负载平衡和带宽分配的方法，设备和系统。 通常，根据本发明的一个实施方式，路由节点通过动态地修改一个或多个基于竞争的传输控制参数来实现基于竞争的媒体接入机制，并且在无线网状网络内自分配带宽。 路由节点确定跳数并且至少部分地基于跳数来调整一个或多个争用参数。

公开(公告)号：US20070129034A1

公开(公告)日：2007-06-07

申请号：US11672132

申请日：2007-02-07

申请人： Andrew Adams ,  Philip Ryan ,  Brian Hart

发明人： Andrew Adams ,  Philip Ryan ,  Brian Hart

IPC分类号： H04B17/02

CPC分类号： H04W52/52 ,  H03G3/3068

摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.

摘要翻译： 存储用于实现方法的指令的装置，载体介质以及用于控制无线电接收机的增益的方法，用于在无线网络中接收信息分组。 接收机连接到天线子系统，并且具有包括多个部分的接收信号路径，所述多个部分包括耦合到天线子系统的第一部分和下一部分。 每个部分都有一个可调节的增益，能够提供其输出信号强度的测量。 该方法包括等待分组指示的开始，提供在第一部分和下一部分的输出处的信号强度的测量，以及使用所提供的测量信号强度来调整第一和下一个部分的增益。 在一个实施例中，接收信号路径包括滤波器，所提供的第一部分的测量在滤波器之前，并且所提供的第二部分的测量值在滤波器之后。 增益调整根据第一部分输出端的测量信号强度设置第一部分的增益，并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益 第一部分的输出。 在一个实施例中，增益调整o在连续AGC阶段中执行，一个阶段设置一个或多个部分的增益。

公开(公告)号：US20070092015A1

公开(公告)日：2007-04-26

申请号：US11565745

申请日：2006-12-01

申请人： Brian Hart ,  John O'Sullivan

发明人： Brian Hart ,  John O'Sullivan

IPC分类号： H04K1/10 ,  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。

公开(公告)号：US20070076053A1

公开(公告)日：2007-04-05

申请号：US11239799

申请日：2005-09-30

申请人： Brian Hart ,  Gary Holt ,  Melissa Waldeck ,  Sean Weaver ,  Gary Williams

发明人： Brian Hart ,  Gary Holt ,  Melissa Waldeck ,  Sean Weaver ,  Gary Williams

IPC分类号： B41J2/14 ,  B41J2/16 ,  G01D15/00 ,  G11B5/127

CPC分类号： B41J2/1603 ,  B41J2/162 ,  B41J2/1631 ,  B41J2/1645

摘要： Improved photoimaged nozzle members for a micro-fluid ejection head, micro-fluid ejection heads containing such nozzle members, and methods for making any of the same. One such nozzle member is provided by a photoresist nozzle layer applied adjacent a thick film layer on a substrate having fluid ejector actuators. The photoresist nozzle layer has a plurality of nozzles therein. The nozzles are formed in the nozzle layer from an exit surface of the nozzle layer to an entrance surface of the nozzle layer. The nozzles have a reentrant hole profile with a wall angle greater than about 40 up to about 30° measured from an axis orthogonal to a plane defined by the exit surface of the nozzle layer.

摘要翻译： 用于微流体喷射头的改进的光成像喷嘴构件，包含这种喷嘴构件的微流体喷射头及其制造方法。 一个这样的喷嘴构件由邻近具有流体喷射器致动器的基板上的厚膜层施加的光致抗蚀剂喷涂层提供。 光致抗蚀剂喷涂层在其中具有多个喷嘴。 喷嘴从喷嘴层的出射面到喷嘴层的入射面形成在喷嘴层中。 喷嘴具有从垂直于由喷嘴层的出射表面限定的平面的轴测量的壁角大于约40至约30°的折入孔轮廓。

公开(公告)号：US20070066259A1

公开(公告)日：2007-03-22

申请号：US11557728

申请日：2006-11-08

申请人： Philip Ryan ,  Andrew Adams ,  John O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz Zyner

发明人： Philip Ryan ,  Andrew Adams ,  John O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz Zyner

IPC分类号： H04B17/00 ,  H04B7/00

CPC分类号： H03G3/3078

摘要： A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.

摘要翻译： 一种用于突发操作的数字AGC系统，特别适用于在无线局域网中接收分组。 一个实施例包括在宽动态范围内提供称为接收信号强度指示（RSSI）的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。 分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

公开(公告)号：US20060146092A1

公开(公告)日：2006-07-06

申请号：US11026504

申请日：2004-12-30

申请人： Johnathan Barnes ,  Craig Bertelsen ,  Brian Hart ,  Gary Williams ,  Sean Weaver ,  Girish Patil

发明人： Johnathan Barnes ,  Craig Bertelsen ,  Brian Hart ,  Gary Williams ,  Sean Weaver ,  Girish Patil

IPC分类号： B41J2/04

CPC分类号： B41J2/1628 ,  B41J2/14024 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/1603 ,  B41J2/1623 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1634 ,  B41J2/1635 ,  B41J2/1639 ,  B41J2/1645 ,  Y10T29/49135 ,  Y10T29/49139 ,  Y10T29/4914 ,  Y10T29/49401 ,  Y10T29/4979 ,  Y10T29/49798

摘要： A method of making a micro-fluid ejection head structure for a micro-fluid ejection device. The method includes applying a removable mandrel material to a semiconductor substrate wafer containing fluid ejection actuators on a device surface thereof. The mandrel material is shaped to provide fluid chamber and fluid channel locations on the substrate wafer. A micro machinable material is applied to the shaped mandrel and the device surface of the wafer to provide a nozzle plate and flow feature layer on the shaped mandrel and wafer. A plurality of nozzle holes are formed in the nozzle plate and flow feature layer. The shaped mandrel material is then removed from the device surface of the substrate wafer to provide fluid chambers and fluid channels in the nozzle plate and flow feature layer.

摘要翻译： 一种制造用于微流体喷射装置的微流体喷射头结构的方法。 该方法包括将可移除的心轴材料施加到在其装置表面上含有流体喷射致动器的半导体衬底晶片。 心轴材料成型为在衬底晶片上提供流体室和流体通道位置。 将微加工材料施加到成形心轴和晶片的装置表面，以在成形心轴和晶片上提供喷嘴板和流动特征层。 在喷嘴板和流动特征层中形成多个喷嘴孔。 然后将成形的心轴材料从衬底晶片的器件表面移除，以在喷嘴板和流动特征层中提供流体室和流体通道。