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1. 发明申请

US20120063340A1 SYSTEM AND METHOD FOR ACCESS POINT BASED POSITIONING 有权
标题翻译：用于基于点的定位的系统和方法
公开(公告)号：US20120063340A1
公开(公告)日：2012-03-15
申请号：US13230512
申请日：2011-09-12
申请人： Deric W. WATERS , Sthanunathan RAMAKRISHNAN , Ariton E. XHAFA , Jaiganesh BALAKRISHNAN , Tarkesh PANDE , Sandeep KASARGOD , Saket THUKRAL
发明人： Deric W. WATERS , Sthanunathan RAMAKRISHNAN , Ariton E. XHAFA , Jaiganesh BALAKRISHNAN , Tarkesh PANDE , Sandeep KASARGOD , Saket THUKRAL
IPC分类号： H04W24/00 , H04W84/12 , H04W88/08
CPC分类号： G01S5/0242 , H04W64/00
摘要： Apparatus and methods for scanning for access points (APs) for wireless local area network (WLAN) positioning. In one embodiment a wireless device includes a WLAN positioning system. The WLAN positioning system includes an AP scanner. The AP scanner is configured to determine which WLAN channels are being used by APs proximate to the wireless device. The AP scanner is also configured to scan for AP transmissions only the WLAN channels determined to be used by APs proximate to the wireless device. The AP scanner is further configured to extract signal strength and AP identification information for WLAN positioning from the AP transmissions on the scanned channels.
摘要翻译：用于扫描用于无线局域网（WLAN）定位的接入点（AP）的装置和方法。在一个实施例中，无线设备包括WLAN定位系统。 WLAN定位系统包括AP扫描器。 AP扫描器被配置为确定靠近无线设备的AP正在使用哪些WLAN信道。 AP扫描器还被配置为仅扫描AP传输，确定由接近无线设备的AP使用的WLAN信道。 AP扫描器还被配置为从扫描的信道上的AP传输中提取用于WLAN定位的信号强度和AP识别信息。

2. 发明申请

US20120172054A1 SYSTEM AND METHOD FOR COOPERATIVE POSITIONING 审中-公开
标题翻译：合作定位系统与方法
公开(公告)号：US20120172054A1
公开(公告)日：2012-07-05
申请号：US13327052
申请日：2011-12-15
申请人： Deric W. WATERS , Tarkesh PANDE , Jaiganesh BALAKRISHNAN
发明人： Deric W. WATERS , Tarkesh PANDE , Jaiganesh BALAKRISHNAN
IPC分类号： H04W24/00
CPC分类号： G01S19/46 , H04W64/00
摘要： Apparatus and method for cooperatively positioning a mobile wireless device. In one embodiment a mobile wireless device includes a navigation satellite receiver, a WLAN transceiver, and a cooperative positioning system. The navigation satellite receiver is configured to receive positioning signals from positioning satellites. The cooperative positioning system is configured to receive positioning measurements from a cooperating mobile wireless device via the WLAN transceiver. The received positioning measurements are derived from satellite positioning signals received by the cooperating mobile wireless device. The cooperative positioning system is also configured to determine a position of the mobile wireless device based on the positioning measurements received from the cooperating mobile wireless device, positioning measurements provided by the navigation satellite receiver, and a focal measurement that is a function of at least one of the position and the clock bias of both the mobile wireless device and the cooperating mobile wireless device.
摘要翻译：用于协调地定位移动无线设备的装置和方法。在一个实施例中，移动无线设备包括导航卫星接收机，WLAN收发器和协作定位系统。导航卫星接收机被配置为从定位卫星接收定位信号。协作定位系统被配置为经由WLAN收发器从协作的移动无线设备接收定位测量。所接收的定位测量值来源于由协作的移动无线设备接收的卫星定位信号。协作定位系统还被配置为基于从协作的移动无线设备接收的定位测量结果确定移动无线设备的位置，由导航卫星接收机提供的定位测量以及作为至少一个移动无线设备和协作移动无线设备的位置和时钟偏差。

3. 发明申请

US20100232548A1 DEMODULATION AND DECODING FOR FREQUENCY MODULATION (FM) RECEIVERS WITH RADIO DATA SYSTEM (RDS) OR RADIO BROADCAST DATA SYSTEM (RBDS) 有权
标题翻译：无线电数据系统（RDS）或无线电广播数据系统（RBDS）的频率调制（FM）接收机的解调和解码
公开(公告)号：US20100232548A1
公开(公告)日：2010-09-16
申请号：US12720688
申请日：2010-03-10
申请人： Jaiganesh BALAKRISHNAN , Aravind Ganesan
发明人： Jaiganesh BALAKRISHNAN , Aravind Ganesan
IPC分类号： H04L27/14
CPC分类号： H04L27/2272 , H04L1/0045 , H04L1/0057 , H04L27/233 , H04L2027/0067 , H04L2027/0085 , H04L2027/0087
摘要： Demodulation and decoding for frequency modulation (FM) receivers with radio data system (RDS) or radio broadcast data system (RBDS). An example of a method for processing a signal in a receiver includes quantizing a demodulated signal to generate bits in response to receipt of the demodulated signal. The method also includes grouping the bits into one or more blocks. The method further includes computing a syndrome for a block from the one or more blocks. Moreover, the method includes identifying error, corresponding to the syndrome, in the block based on type of demodulation. The type of demodulation includes a coherent demodulation and a differential demodulation. Furthermore, the method includes correcting the error in the block.
摘要翻译：具有无线电数据系统（RDS）或无线电广播数据系统（RBDS）的频率调制（FM）接收机的解调和解码。用于处理接收机中的信号的方法的示例包括量化解调信号以响应于接收到解调信号而产生位。该方法还包括将比特分组成一个或多个块。该方法还包括从一个或多个块计算块的综合征。此外，该方法包括基于解调的类型来识别与块中相对应的错误。解调的类型包括相干解调和差分解调。此外，该方法包括校正块中的错误。

4. 发明申请

US20100036459A1 SIGNALING IN A MEDICAL IMPLANT BASED SYSTEM 审中-公开
标题翻译：在医疗植入式系统中进行信号传导
公开(公告)号：US20100036459A1
公开(公告)日：2010-02-11
申请号：US12536520
申请日：2009-08-06
申请人： Sthanunathan RAMAKRISHNAN , Ganesan THIAGARAJAN , Kumar Divyesh SHAH , Jaiganesh BALAKRISHNAN , Sriram MURALI
发明人： Sthanunathan RAMAKRISHNAN , Ganesan THIAGARAJAN , Kumar Divyesh SHAH , Jaiganesh BALAKRISHNAN , Sriram MURALI
IPC分类号： A61N1/08
CPC分类号： A61N1/3727
摘要： Signaling in a medical implant based system. A method includes transmitting bits modulated with a predefined sequence in a band of channels by a first medical transceiver. The method includes detecting the predefined sequence by a second medical transceiver. The method also includes performing predetermined action if the predefined sequence is detected. In one example, the predetermined action includes determining presence of a signal.
摘要翻译：在医疗植入物系统中进行信号传导。一种方法包括通过第一医疗收发器传输利用频道频带中的预定义序列调制的比特。该方法包括通过第二医疗收发器检测预定义的序列。如果检测到预定义的序列，该方法还包括执行预定的动作。在一个示例中，预定动作包括确定信号的存在。

5. 发明申请

US20130058490A1 SUPPRESSION OF INTERFERENCE ACROSS TRANSCEIVERS INTEGRATED ON A SINGLE SEMICONDUCTOR CHIP 有权
标题翻译：抑制集成在单个半导体芯片上的交叉收发器的干扰
公开(公告)号：US20130058490A1
公开(公告)日：2013-03-07
申请号：US13226503
申请日：2011-09-07
申请人： Jaiganesh BALAKRISHNAN , Sriram MURALI
发明人： Jaiganesh BALAKRISHNAN , Sriram MURALI
IPC分类号： H04B1/38 , H04R29/00
CPC分类号： G06F1/30 , H04H40/72
摘要： Suppression of interference across transceivers integrated on a single semiconductor chip. An example of a method of reducing noise in a transceiver includes introducing an adjustable time delay into a signal between a first section of a signal path into which noise may be introduced and a second section of the signal path into which noise may be introduced. The method also includes selectively adjusting the time delay and signal polarity to improve a signal-to-noise metric of the transceiver. An example of the transceiver includes a transmitter and a receiver. The transceiver also includes an adjustable time delay between a first section of a transceiver signal path into which noise may be introduced and a second section of the transceiver signal path into which noise may be introduced and circuitry for reducing noise by adjusting a value of the time delay.
摘要翻译：集成在单个半导体芯片上的收发器之间的干扰抑制。降低收发器噪声的方法的一个例子包括将可调节的时间延迟引入到可以引入噪声的信号路径的第一部分和信号路径的可能引入噪声的第二部分之间的信号中。该方法还包括选择性地调整时间延迟和信号极性以改善收发信机的信噪比度量。收发器的示例包括发射机和接收机。收发器还包括可以在其中引入噪声的收发器信号路径的第一部分和可以引入噪声的收发器信号路径的第二部分之间的可调节的时间延迟以及通过调整时间的值来降低噪声的电路延迟。

6. 发明申请

US20070069937A1 INTERLEAVED ANALOG TO DIGITAL CONVERTER WITH COMPENSATION FOR PARAMETER MISMATCH AMONG INDIVIDUAL CONVERTERS 有权
标题翻译：用于单个转换器参数不匹配的数字转换器的交互式模拟
公开(公告)号：US20070069937A1
公开(公告)日：2007-03-29
申请号：US11309081
申请日：2006-06-16
申请人： Jaiganesh BALAKRISHNAN , Venugopal GOPINATHAN , Sthanunathan RAMAKRISHNAN
发明人： Jaiganesh BALAKRISHNAN , Venugopal GOPINATHAN , Sthanunathan RAMAKRISHNAN
IPC分类号： H03M1/38
CPC分类号： H03M1/1028 , H03M1/0624 , H03M1/1215
摘要： Interleaved analog to digital converter with compensation for parameter mismatch among individual converters. A reference ADC samples an input signal at substantially the same time instances as an individual converter used in the interleaved ADC. The reference values provided by the reference ADC are compared with the digital codes generated by the converter to generate an error value from which estimates of the gain, DC offset and timing errors are computed using statistical techniques. Timing error thus estimated is used to change the phase of the sampling clock provided to the converter, and the gain and DC offset errors estimated are applied to modify the values of reference voltages applied to the converter, thus compensating for parameter mismatches.
摘要翻译：交错模数转换器，补偿各转换器之间的参数失配。参考ADC在与交错ADC中使用的单独转换器基本相同的时间实例处采样输入信号。由参考ADC提供的参考值与由转换器产生的数字代码进行比较，以产生误差值，利用统计技术来计算增益，直流偏移和定时误差的估计。使用如此估计的定时误差来改变提供给转换器的采样时钟的相位，并且应用估计的增益和DC偏移误差来修改施加到转换器的参考电压的值，从而补偿参数失配。

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