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1.发明授权公开(公告)号：US06954171B2
公开(公告)日：2005-10-11
申请号：US10406756
申请日：2003-04-02
申请人： Paul Husted , William J. McFarland , Xiaoru Zhang , John Thompson
发明人： Paul Husted , William J. McFarland , Xiaoru Zhang , John Thompson
摘要： Radar Pulse detection and radar signal length detection are used to detect and provide information for identifying radar signals. Pulse detection estimates a radar pulse size when it is too short for meaningful measurement. Pulse detection identifies a radar by identification of an in-band pulse without a communication or data packet encoded therein, or a communication error is detected with the in-band pulse. Signal length detection counts the length of a received signal after the received signal exceeds a radar threshold. The count identifies the received signal length upon drop of the power. The signal is identified as a radar when the power drops before a PHY error occurs, or when the power drop occurs after a PHY error and a delay time equivalent to the shortest radar signal. A radar signal is also identified upon a timeout wait for a power drop after a PHY error.
摘要翻译： 雷达脉冲检测和雷达信号长度检测用于检测和提供识别雷达信号的信息。 脉冲检测估计雷达脉冲大小太短而无法进行有意义的测量。 脉冲检测通过识别带内脉冲来识别雷达，而无需在其中编码通信或数据分组，或者利用带内脉冲检测通信错误。 信号长度检测对接收到的信号超过雷达阈值后的接收信号的长度进行计数。 该计数在功率下降时识别接收到的信号长度。 当在PHY错误发生之前的功率下降时，或在PHY错误和相当于最短雷达信号的延迟时间之后发生掉电时，该信号被识别为雷达。 在超时之后也会识别雷达信号，等待PHY错误后的掉电。
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2.发明授权Concurrent background spectral scanning for bluetooth packets while receiving WLAN packets 有权蓝牙数据包同时进行背景光谱扫描，同时接收WLAN数据包公开(公告)号：US08817717B2
公开(公告)日：2014-08-26
申请号：US13101533
申请日：2011-05-05
IPC分类号： H04W4/00
摘要： A Bluetooth detection unit can be implemented to minimize the time required for executing the inquiry and paging scan procedures on a Bluetooth device associated with a collocated WLAN device. The Bluetooth detection unit can execute concurrent background spectral scanning to detect Bluetooth control packets while the WLAN device is receiving WLAN packets. The Bluetooth detection unit can analyze, for each Bluetooth control channel, the Bluetooth device can determine energy measurements associated with each Bluetooth control channel and can determine whether each Bluetooth control channel comprises a narrowband signal based, at least in part, on frequency domain samples associated with an RF signal received at the WLAN device. The Bluetooth detection unit can determine which of the Bluetooth control channels comprise a Bluetooth control packet.
摘要翻译： 可以实现蓝牙检测单元，以最小化在与并置的WLAN设备相关联的蓝牙设备上执行查询和寻呼扫描过程所需的时间。 蓝牙检测单元可以执行并发的背景光谱扫描，以在WLAN设备正在接收WLAN分组时检测蓝牙控制分组。 蓝牙检测单元可以针对每个蓝牙控制信道来分析蓝牙设备可以确定与每个蓝牙控制信道相关联的能量测量，并且可以至少部分地基于相关的频域采样来确定每个蓝牙控制信道是否包括窄带信号 在WLAN设备处接收RF信号。 蓝牙检测单元可以确定哪个蓝牙控制信道包括蓝牙控制分组。
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公开(公告)号：US08170494B2
公开(公告)日：2012-05-01
申请号：US12172374
申请日：2008-07-14
申请人： Paul J. Husted , Soner Ozgur , Xiaoru Zhang
发明人： Paul J. Husted , Soner Ozgur , Xiaoru Zhang
IPC分类号： H04B1/38
CPC分类号： H03C5/00 , H04B2001/0491
摘要： A transceiver including a transmit modulator and a receiver. The modulator may accept a channel selection input, a first modulation input, a second modulation input, and an amplitude input. During transmit time slots, the modulator may generate a modulated output having a carrier frequency selected by the channel selection input. The carrier frequency may be frequency modulated by the first modulation inputs, phase modulated by the second modulation input, and amplitude modulated by the amplitude input. During receive time slots, the modulator may generate a carrier frequency selected by the channel selection input and offset by the first modulation input. The modulator may alternate between providing modulated transmit signals during transmit time slots and providing a local oscillator for the receiver during receive time slots.
摘要翻译： 包括发射调制器和接收机的收发器。 调制器可以接受信道选择输入，第一调制输入，第二调制输入和幅度输入。 在发送时隙期间，调制器可以生成具有由频道选择输入选择的载波频率的调制输出。 载波频率可以由第一调制输入进行频率调制，由第二调制输入进行相位调制，并由振幅输入进行幅度调制。 在接收时隙期间，调制器可以产生由信道选择输入选择的载波频率，并由第一调制输入偏移。 调制器可以在发送时隙期间在提供调制的发送信号之间交替，并且在接收时隙期间为接收机提供本地振荡器。
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公开(公告)号：US08081878B1
公开(公告)日：2011-12-20
申请号：US12409423
申请日：2009-03-23
申请人： Xiaoru Zhang , William J. McFarland , Atul Divekar
发明人： Xiaoru Zhang , William J. McFarland , Atul Divekar
IPC分类号： H04B10/00
CPC分类号： G08C17/02 , G08C23/04 , G08C2201/40
摘要： A system and method for wirelessly transmitting both real-time data streams and remote control signals is described. A first transceiver can be used for detecting remote control signals associated with an end device (e.g. a television), transforming these remote control signals into wireless signals, and transmitting the wireless signals. A second transceiver can be used for receiving the wireless signals and transforming the wireless signals into the recreated remote control signals. The recreated remote control signals can then be sent to a source device (e.g. a DVD player). Because wireless signals are used (instead of infrared (IR) signals, for example), the source device can be outside the line of sight of the end device and still respond to the remote control signals.
摘要翻译： 描述了用于无线传输实时数据流和遥控信号的系统和方法。 第一收发器可用于检测与终端设备（例如电视机）相关联的遥控信号，将这些遥控信号转换成无线信号，并发送无线信号。 第二收发器可用于接收无线信号并将无线信号转换成重新创建的遥控信号。 然后可以将重新创建的遥控信号发送到源设备（例如DVD播放器）。 由于使用无线信号（例如，代替红外线（IR）信号），源设备可能在终端设备的视线之外并且仍然响应遥控信号。
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公开(公告)号：US20100316175A1
公开(公告)日：2010-12-16
申请号：US12800815
申请日：2010-05-21
IPC分类号： H04L7/02
CPC分类号： H04L27/0014 , H04L7/042 , H04L25/0226 , H04L2027/003
摘要： Techniques are disclosed for detecting a packet. One technique includes sampling a received signal to produce a sequence of samples wherein the sequence of samples includes a plurality of subsequences of samples; cross correlating the subsequences of samples with a known form of the subsequence to produce cross correlations; self correlating the cross correlations to produce a plurality of self correlations; summing the self correlations; and processing the sum of the self correlations.
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公开(公告)号：US07529486B1
公开(公告)日：2009-05-05
申请号：US11197122
申请日：2005-08-03
申请人： Xiaoru Zhang , William J. McFarland , Atul Divekar
发明人： Xiaoru Zhang , William J. McFarland , Atul Divekar
IPC分类号： H04B10/00
CPC分类号： G08C17/02 , G08C23/04 , G08C2201/40
摘要： A system and method for wirelessly transmitting both real-time data streams and remote control signals is described. A first transceiver can be used for detecting remote control signals associated with an end device (e.g. a television), transforming these remote control signals into wireless signals, and transmitting the wireless signals. A second transceiver can be used for receiving the wireless signals and transforming the wireless signals into the recreated remote control signals. The recreated remote control signals can then be sent to a source device (e.g. a DVD player). Because wireless signals are used (instead of infrared (IR) signals, for example), the source device can be outside the line of sight of the end device and still respond to the remote control signals.
摘要翻译： 描述了用于无线传输实时数据流和遥控信号的系统和方法。 第一收发器可用于检测与终端设备（例如电视机）相关联的遥控信号，将这些遥控信号转换成无线信号，并发送无线信号。 第二收发器可用于接收无线信号并将无线信号转换成重新创建的遥控信号。 然后可以将重新创建的遥控信号发送到源设备（例如DVD播放器）。 由于使用无线信号（例如，代替红外线（IR）信号），源设备可能在终端设备的视线之外并且仍然响应遥控信号。
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7.发明授权Multi-chain signal detection and gain control for automatic gain control systems 有权用于自动增益控制系统的多链信号检测和增益控制公开(公告)号：US07463704B1
公开(公告)日：2008-12-09
申请号：US10884787
申请日：2004-07-01
IPC分类号： H04L27/08
CPC分类号： H03G3/3068 , H03G3/3078
摘要： A wireless local area network (WLAN) system can have multiple antennas to improve signal detection and decoding. A WLAN receiver in such a system includes multiple amplifiers that can appropriately size an incoming signal and an automatic gain control unit to process the received incoming signals. The amplifiers of a chain of the WLAN receiver, i.e. an antenna and associated receiver components, can be adjusted with computed gains. To optimize the wireless system detection and decoding, the automatic gain control unit can advantageously compute these gains for each amplifier in the WLAN receiver.
摘要翻译： 无线局域网（WLAN）系统可以具有多个天线来改善信号检测和解码。 这种系统中的WLAN接收机包括可以适当地调整输入信号的大小的放大器和自动增益控制单元来处理接收到的输入信号。 可以利用计算的增益来调整WLAN接收器链的放大器，即天线和相关联的接收器组件。 为了优化无线系统检测和解码，自动增益控制单元可以有利地计算WLAN接收机中每个放大器的这些增益。
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公开(公告)号：US06891496B2
公开(公告)日：2005-05-10
申请号：US10138953
申请日：2002-05-03
申请人： Paul Husted , William J. McFarland , Xiaoru Zhang , John Thompson
发明人： Paul Husted , William J. McFarland , Xiaoru Zhang , John Thompson
摘要： Radar Pulse detection and radar signal length detection are used to detect and provide information for identifying radar signals. Pulse detection estimates a radar pulse size when it is too short for meaningful measurement. Pulse detection identifies a radar by identification of an in-band pulse without a communication or data packet encoded therein, or a communication error is detected with the in-band pulse. Signal length detection counts the length of a received signal after the received signal exceeds a radar threshold. The count identifies the received signal length upon drop of the power. The signal is identified as a radar when the power drops before a PHY error occurs, or when the power drop occurs after a PHY error and a delay time equivalent to the shortest radar signal. A radar signal is also identified upon a timeout wait for a power drop after a PHY error.
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公开(公告)号：US08498589B2
公开(公告)日：2013-07-30
申请号：US12172375
申请日：2008-07-14
申请人： Paul J. Husted , William W. Si , David J. Weber , Xiaoru Zhang
发明人： Paul J. Husted , William W. Si , David J. Weber , Xiaoru Zhang
IPC分类号： H04B1/66
CPC分类号： H03C5/00 , H04B2001/0491
摘要： A modulation system comprising a signal processing unit and a modulator. The signal processing unit may generate a low frequency modulator signal, a high frequency modulator signal, and a modulator amplitude control signal. The modulator may generate a modulated signal for transmission via a wireless network based, at least in part, on the low frequency modulator signal, the high frequency modulator signal, and the modulator amplitude control signal. The signal processing unit comprises a delay compensation unit for delaying the generation of the high frequency modulator signal and the modulator amplitude control signal based, at least in part, on signal generation and modulation path delays associated with the low frequency modulator signal to substantially align the modulator signals at the output of the modulation system.
摘要翻译： 一种包括信号处理单元和调制器的调制系统。 信号处理单元可以生成低频调制器信号，高频调制器信号和调制器幅度控制信号。 该调制器可以至少部分地基于低频调制器信号，高频调制器信号和调制器幅度控制信号，经由无线网络生成用于传输的调制信号。 信号处理单元包括延迟补偿单元，用于至少部分地基于与低频调制器信号相关联的信号产生和调制路径延迟来延迟高频调制器信号和调制器幅度控制信号的产生，以基本对准 调制器信号在调制系统的输出端。
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10.发明申请CONCURRENT BACKGROUND SPECTRAL SCANNING FOR BLUETOOTH PACKETS WHILE RECEIVING WLAN PACKETS 有权接收WLAN分组时蓝牙分组的相关背景扫描公开(公告)号：US20120281638A1
公开(公告)日：2012-11-08
申请号：US13101533
申请日：2011-05-05
IPC分类号： H04W4/00
摘要： A Bluetooth detection unit can be implemented to minimize the time required for executing the inquiry and paging scan procedures on a Bluetooth device associated with a collocated WLAN device. The Bluetooth detection unit can execute concurrent background spectral scanning to detect Bluetooth control packets while the WLAN device is receiving WLAN packets. The Bluetooth detection unit can analyze, for each Bluetooth control channel, the Bluetooth device can determine energy measurements associated with each Bluetooth control channel and can determine whether each Bluetooth control channel comprises a narrowband signal based, at least in part, on frequency domain samples associated with an RF signal received at the WLAN device. The Bluetooth detection unit can determine which of the Bluetooth control channels comprise a Bluetooth control packet.
摘要翻译： 可以实现蓝牙检测单元以最小化在与并置的WLAN设备相关联的蓝牙设备上执行查询和寻呼扫描过程所需的时间。 蓝牙检测单元可以执行并发的背景光谱扫描，以在WLAN设备正在接收WLAN分组时检测蓝牙控制分组。 蓝牙检测单元可以针对每个蓝牙控制信道来分析蓝牙设备可以确定与每个蓝牙控制信道相关联的能量测量，并且可以至少部分地基于相关的频域采样来确定每个蓝牙控制信道是否包括窄带信号 在WLAN设备处接收RF信号。 蓝牙检测单元可以确定哪个蓝牙控制信道包括蓝牙控制分组。
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