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1. 发明授权

US08300740B1 Method and system for generating information for use in detecting a signal 有权
标题翻译：用于产生用于检测信号的信息的方法和系统
公开(公告)号：US08300740B1
公开(公告)日：2012-10-30
申请号：US12020327
申请日：2008-01-25
申请人： Zhiyu Yang
发明人： Zhiyu Yang
IPC分类号： H04B1/707
CPC分类号： H04B1/711 , H04L1/206
摘要： In a method for generating a signal quality indicator, a correlation signal is generated from a received signal and a spreading sequence. A magnitude signal is generated from the correlation signal. A time-domain averaged signal is generated based on the magnitude signal and at least a first time delayed version of the magnitude signal delayed by at least one symbol period. A peak-to-average signal is generated based on the time-domain averaged signal.
摘要翻译：在用于产生信号质量指示符的方法中，从接收信号和扩展序列产生相关信号。从相关信号产生幅度信号。基于幅度信号和延迟至少一个符号周期的幅度信号的至少第一时间延迟版本来生成时域平均信号。基于时域平均信号生成峰均信号。

2. 发明授权

US08275323B1 Clear-channel assessment in 40 MHz wireless receivers 有权
标题翻译： 40 MHz无线接收机的清晰通道评估
公开(公告)号：US08275323B1
公开(公告)日：2012-09-25
申请号：US11827958
申请日：2007-07-13
申请人： Kedar Shirali , Atul Salhotra , Zhiyu Yang
发明人： Kedar Shirali , Atul Salhotra , Zhiyu Yang
IPC分类号： H04B17/00
CPC分类号： H04W72/04 , H04B17/318 , H04W28/04 , H04W74/085
摘要： A system including an activity sensing module to sense RF activity in first and second sub-channels of a communication channel of a first wireless network. N adjacent channel interference (ACI) filter modules arranged in parallel receive signals from N antennas, respectively, filter out signals in channels adjacent to the communication channel, and generate N filtered signals, respectively, where N>2. The activity sensing module generates control signals based on the N filtered signals. A channel identification module processes the control signals, and determines that both of the first and second sub-channels are available when the RF activity originating from a second wireless network is not present in both of the first and second sub-channels, and that the first sub-channel is available when the RF activity originating from the second wireless network is present only in the second sub-channel and is less than or equal to a predetermined threshold.
摘要翻译：一种系统，包括用于感测第一无线网络的通信信道的第一和第二子信道中的RF活动的活动感测模块。 N个天线并行布置的N个相邻信道干扰（ACI）滤波器模块分别接收与通信信道相邻的信道中的信号，并分别产生N个滤波信号，其中N≥2。活动感测模块根据N个滤波信号产生控制信号。信道识别模块处理控制信号，并且当源自第二无线网络的RF活动不存在于第一和第二子信道中时，确定第一和第二子信道都可用，并且当来自第二无线网络的RF活动仅在第二子信道中存在且小于或等于预定阈值时，第一子信道可用。

3. 发明授权

US08208571B1 Method for detecting a periodic signal 有权
标题翻译：用于检测周期信号的方法
公开(公告)号：US08208571B1
公开(公告)日：2012-06-26
申请号：US13175476
申请日：2011-07-01
申请人： Zhiyu Yang
发明人： Zhiyu Yang
IPC分类号： H04K1/10 , H04L27/00 , H04J13/00
CPC分类号： H04L27/2676 , H04H40/18 , H04L27/2655
摘要： In detecting a signal, angle information is generated based on a complex signal having a periodic portion. An autocorrelation signal is generated based on the angle information and not based on magnitude information associated with the complex signal. The periodic portion is detected based on the autocorrelation signal.
摘要翻译：在检测信号时，基于具有周期性部分的复数信号产生角度信息。基于角度信息生成自相关信号，而不是基于与复信号相关联的幅度信息。基于自相关信号检测周期部分。

4. 发明授权

US08605834B1 Method and system for generating information for use in detecting a signal 失效
标题翻译：用于产生用于检测信号的信息的方法和系统
公开(公告)号：US08605834B1
公开(公告)日：2013-12-10
申请号：US13619617
申请日：2012-09-14
申请人： Zhiyu Yang
发明人： Zhiyu Yang
IPC分类号： H04B1/707 , H03D1/00
CPC分类号： H04B1/711 , H04L1/206
摘要： In a method for generating a signal quality indicator, a correlation signal is generated from a received signal and a spreading sequence. A magnitude signal is generated from the correlation signal. A time-domain averaged signal is generated based on the magnitude signal and at least a first time delayed version of the magnitude signal delayed by at least one symbol period. A peak-to-average signal is generated based on the time-domain averaged signal.
摘要翻译：在用于产生信号质量指示符的方法中，从接收信号和扩展序列产生相关信号。从相关信号产生幅度信号。基于幅度信号和延迟至少一个符号周期的幅度信号的至少第一时间延迟版本来生成时域平均信号。基于时域平均信号生成峰均信号。

5. 发明授权

US08254514B1 Early-late gate timing recovery 有权
标题翻译：早期门时序恢复
公开(公告)号：US08254514B1
公开(公告)日：2012-08-28
申请号：US11951725
申请日：2007-12-06
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
IPC分类号： H04L7/04
CPC分类号： H04B1/7085 , H03M1/0836 , H03M1/1245 , H04B1/7113 , H04L7/042
摘要： An early-late gate based ADC timing approach is described for performing early-late gate timing recovery despite the presence of multipath signal distortion. Multipath conditions may severely distort Barker correlator magnitudes generated for taps within two taps of a determined bit synchronization time. Exemplary embodiments of the described approach may combine Barker correlator magnitudes for several receive chains to calculate the timing error correction corresponding to a difference of early and late taps. The approach may be used to increase the size and stability of Barker correlator magnitudes generated for taps far away from a determined bit synchronization time. Such embodiments allow early-late differences to be generated using combined Barker correlator magnitudes generated at taps that are two or more chips from a determined bit synchronization time, thereby avoiding multipath distortion that may distort Barker correlator magnitudes generated within two or more chips from the determined bit synchronization time.
摘要翻译：描述了一种基于早期门的ADC定时方法，用于执行早期门限定时恢复，尽管存在多径信号失真。多路径条件可能严重扭曲在确定的位同步时间的两个抽头之内为抽头产生的Barker相关器幅度。所描述的方法的示例性实施例可以组合几个接收链的巴克相关器幅度，以计算对应于早期和晚期抽头的差异的定时误差校正。该方法可以用于增加远离确定的位同步时间的抽头产生的巴克相关器幅度的大小和稳定性。这样的实施例允许使用在来自确定的位同步时间的两个或更多个芯片的抽头处产生的组合巴克相关器幅值来产生早期差异，从而避免可能使来自所确定的两个或更多个芯片内产生的Barker相关器幅度失真的多径失真位同步时间。

6. 发明授权

US08224272B1 System for signal metric based receive selection 有权
标题翻译：基于信号度量的接收选择系统
公开(公告)号：US08224272B1
公开(公告)日：2012-07-17
申请号：US11999482
申请日：2007-12-05
申请人： Hongyuan Zhang , Zhiyu Yang , Kedar Shirali , Atul Salhotra
发明人： Hongyuan Zhang , Zhiyu Yang , Kedar Shirali , Atul Salhotra
IPC分类号： H04B17/02 , H04B1/16
CPC分类号： H04L27/0012 , H04B7/082 , H04L23/02 , H04L25/0262 , H04L27/2071
摘要： A wireless networking receiver with digital antenna switching selects an antenna with an 802.11b signal based on a signal metric, such as the highest signal quality or highest peak amplitude. In one embodiment, the receiver comprises a plurality of antennas that may each receive one of a plurality of RF signals conforming to the IEEE 802.11b standard. The receiver may have multiple antennas for use with the IEEE 802.11n standard, but may receive signals conforming to the 802.11b standard. The receiver also comprises a carrier sense circuit configured to calculate a signal metric for each of the signals and further configured to generate a selection signal signifying one of the signals, based on the signal metric. The receiver further comprises a multiplexer configured to output one of the signals, based on the selection signal. In another embodiment, a wireless networking receiver comprises signal receiving means, carrier sensing means for calculating and selecting a signal based on a signal metric, and multiplexer means to output the signal. A related method is also disclosed. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.
摘要翻译：具有数字天线切换的无线网络接收机基于诸如最高信号质量或最高峰值幅度的信号度量来选择具有802.11b信号的天线。在一个实施例中，接收机包括可以各自接收符合IEEE 802.11b标准的多个RF信号中的一个的多个天线。接收机可以具有用于IEEE 802.11n标准的多个天线，但是可以接收符合802.11b标准的信号。接收机还包括被配置为计算每个信号的信号度量的载波侦听电路，并进一步被配置为基于信号度量产生表示信号之一的选择信号。接收机还包括多路复用器，配置为基于选择信号输出信号之一。在另一个实施例中，无线联网接收机包括信号接收装置，用于基于信号度量计算和选择信号的载波检测装置，以及用于输出信号的多路复用装置。还公开了相关方法。提供了其它实施例，并且本文所述的每个实施例可以单独使用或彼此组合使用。

7. 发明申请

US20110204810A1 APPARATUS, CIRCUIT AND METHOD FOR AUTOMATIC PHASE-SHIFTING PULSE WIDTH MODULATED SIGNAL GENERATION 有权
标题翻译：自动相移脉宽调制信号发生装置，电路及方法
公开(公告)号：US20110204810A1
公开(公告)日：2011-08-25
申请号：US12712930
申请日：2010-02-25
申请人： Zhiyu Yang , Dilip S. , Tushar Dhayagude
发明人： Zhiyu Yang , Dilip S. , Tushar Dhayagude
IPC分类号： H05B41/16 , H03K3/00
CPC分类号： H05B33/0809 , H03K3/012 , H03K7/08 , H05B33/0842
摘要： Systems, circuits and methods for phase-shifting pulse width modulated signal generation are disclosed. In some embodiments, a phase-shifting pulse width modulation circuit is configured to output pulses based on an input pulse width modulated signal. The pulses are staggered relative to one another, and can be received by a light-emitting diode driver for driving a light-emitting diode string at one or more time periods. The phase-shifting pulse width modulation circuit can include a counter-based programmable delay subcircuit consisting of two counter-based programmable delay blocks.
摘要翻译：公开了用于相移脉宽调制信号产生的系统，电路和方法。在一些实施例中，移相脉宽调制电路被配置为基于输入脉宽调制信号输出脉冲。脉冲相对于彼此交错，并且可以由用于在一个或多个时间段驱动发光二极管串的发光二极管驱动器接收。相移脉宽调制电路可以包括由两个基于计数器的可编程延迟块组成的基于计数器的可编程延迟子电路。

8. 发明授权

US07974351B1 Method for detecting a periodic signal 有权
标题翻译：用于检测周期信号的方法
公开(公告)号：US07974351B1
公开(公告)日：2011-07-05
申请号：US11775605
申请日：2007-07-10
申请人： Zhiyu Yang
发明人： Zhiyu Yang
IPC分类号： H04K1/10 , H04J11/00 , H04H20/67
CPC分类号： H04L27/2676 , H04H40/18 , H04L27/2655
摘要： In detecting a signal, angle information is generated based on a complex signal having a periodic portion. An autocorrelation signal is generated based on the angle information and not based on magnitude information associated with the complex signal. The periodic portion is detected based on the autocorrelation signal.
摘要翻译：在检测信号时，基于具有周期性部分的复数信号产生角度信息。基于角度信息生成自相关信号，而不是基于与复信号相关联的幅度信息。基于自相关信号检测周期部分。

9. 发明授权

US07899110B1 Bit sync for receiver with multiple antennas 有权
标题翻译：具有多个天线的接收机的位同步
公开(公告)号：US07899110B1
公开(公告)日：2011-03-01
申请号：US11957245
申请日：2007-12-14
申请人： Hongyuan Zhang , Zhiyu Yang
发明人： Hongyuan Zhang , Zhiyu Yang
IPC分类号： H04B1/00 , H04L27/06
CPC分类号： H04B1/7073 , H04B7/0865
摘要： A receiver with multiple antennas, such as an 802.11b receiver may generate a magnitude signal for each antenna and add the results to determine a peak signal point in a received frame to provide a bit synchronization signal to a rake receiver component. The receiver may include one or more threshold switches that only pass individual or combined magnitude signals when the magnitude signals are above a certain level. The received frame may be dividing into segments using a switching circuit and registers. A comparator may then evaluate the registers to determine the segment with the highest magnitude signal. In one embodiment, values for adjacent segments may be added to a current segment when determining the segment with the highest magnitude signal.
摘要翻译：具有多个天线的接收机（例如802.11b接收机）可以为每个天线生成幅度信号，并且添加结果以确定接收帧中的峰值信号点，以向耙式接收机组件提供比特同步信号。接收机可以包括一个或多个阈值开关，其在幅度信号高于某一水平时仅通过单个或组合的幅度信号。接收到的帧可以使用切换电路分成多个段并进行寄存。然后，比较器可以评估寄存器以确定具有最高幅度信号的段。在一个实施例中，当确定具有最高幅度信号的段时，相邻段的值可被添加到当前段。

10. 发明授权

US07540717B2 Membrane nanopumps based on porous alumina thin films, membranes therefor and a method of fabricating such membranes 有权
标题翻译：基于多孔氧化铝薄膜的膜纳米颗粒，其膜及其制造方法
公开(公告)号：US07540717B2
公开(公告)日：2009-06-02
申请号：US11144100
申请日：2005-06-03
申请人： Ping Sheng , Ning Wang , Jianying Miao , Zhiyu Yang , Shihe Yang , Xinyi Zhang
发明人： Ping Sheng , Ning Wang , Jianying Miao , Zhiyu Yang , Shihe Yang , Xinyi Zhang
IPC分类号： F04B37/02 , H01L21/20 , C21C1/06
CPC分类号： F04B19/006 , F04B17/00
摘要： A technique has been developed to fabricate micro- or nanopumps based on porous alumina thin films. The main body of the nanopump consists of a porous alumina thin film (containing nano-sized channels of about 40-300 nm in diameter) with conductive surfaces (e.g. Au coating layers) on both sides of the film. Through the fabrication of nanochannels in (the alumina films) and the subsequent annealing and surface activation processes, high-efficiency micro- or nanopumps can be made. The nanofluidic flow through the nanochannels of the alumina thin films is driven by an electric field with no moving parts. The flow rate (up to 50 millilitres/(min·cm2)) of water through the alumina thin film can be continuously tuned through the intensity of the electric field, i.e., the DC electric potential applied across the nanochannels.
摘要翻译：已经开发了一种基于多孔氧化铝薄膜制造微米或纳米囊的技术。纳米孔的主体由多孔氧化铝薄膜（包含直径约40-300nm的纳米尺寸的通道）和薄膜两侧的导电表面（例如Au涂层）组成。通过（氧化铝膜）中的纳米通道的制造和随后的退火和表面活化过程，可以制成高效率的微米或者纳米粉。通过氧化铝薄膜的纳米通道的纳米流体流动由没有移动部件的电场驱动。可以通过电场的强度，即施加在纳米通道上的直流电势来连续地调节通过氧化铝薄膜的水的流速（高达50毫升/（分钟/厘米2））。

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