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1. 发明申请

WO2009045966A1 I/Q CALIBRATION TECHNIQUES 审中-公开
标题翻译： I / Q校准技术
公开(公告)号：WO2009045966A1
公开(公告)日：2009-04-09
申请号：PCT/US2008/078174
申请日：2008-09-29
申请人： MAXLINEAR, INC. , LING, Curtis , YU, Shuang
发明人： LING, Curtis , YU, Shuang
IPC分类号： H04B1/26
CPC分类号： H04L27/0014 , H04B1/30
摘要： A receiver includes a static I/Q calibration block and a correlation/integration block. The static I/Q calibration block is configured to substantially eliminate mismatches between in-phase and quadrature components of a portion of the spectrum having associated I/Q mismatches that are relatively frequency-independent. The correlation/integration block is configured to substantially eliminate mismatches between the in-phase and quadrature components of portions of the spectrum having associated I/Q mismatches that are relatively frequency-dependent in accordance with a pair of signals generated by the static I/C calibration block.
摘要翻译：接收机包括静态I / Q校准块和相关/积分块。静态I / Q校准块被配置为基本上消除具有相对频率无关的相关联的I / Q失配的频谱的一部分的同相和正交分量之间的失配。相关/积分块被配置为基本上消除具有相关的I / Q失配的频谱部分的相位和正交分量之间的不匹配，这些失配与根据由静态I / C产生的一对信号相对地依赖于频率校准块。

2. 发明申请

WO2013131082A1 CONFIGURABLE, HIGHLY-INTEGRATED SATELLITE RECEIVER 审中-公开
标题翻译：可配置，高度集成的卫星接收器
公开(公告)号：WO2013131082A1
公开(公告)日：2013-09-06
申请号：PCT/US2013/028860
申请日：2013-03-04
申请人： MAXLINEAR, INC. , REDDY, Madhukar , CHANG, Glenn , GALLAGHER, Timothy , SWAROOP, Shantha Murthy Prem , LING, Curtis , PULLELA, Raja
发明人： REDDY, Madhukar , CHANG, Glenn , GALLAGHER, Timothy , SWAROOP, Shantha Murthy Prem , LING, Curtis , PULLELA, Raja
IPC分类号： H04B1/16
CPC分类号： H04H40/90 , H04N21/6143
摘要： A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
摘要翻译：直接广播卫星（DBS）接收组件可以包括可以基于由DBS接收组件服务的客户端设备请求的内容在多个配置之间或之间配置的集成电路。在第一配置中，多个卫星频带可以被集成电路数字化为单个宽带信号。在第二配置中，卫星频带可以由集成电路数字化为多个单独的窄带信号。集成电路可以包括多个接收路径，每个接收链包括多个低噪声放大器和多个模数转换器中的相应一个。

3. 发明申请

WO2011100475A1 TCXO REPLACEMENT FOR GPS 审中-公开
标题翻译： TCXO替换GPS
公开(公告)号：WO2011100475A1
公开(公告)日：2011-08-18
申请号：PCT/US2011/024406
申请日：2011-02-10
申请人： MAXLINEAR, INC. , ANANDAKUMAR, Anand, K. , HYUNGJIN, Kim , LING, Curtis
发明人： ANANDAKUMAR, Anand, K. , HYUNGJIN, Kim , LING, Curtis
IPC分类号： G01S5/14
CPC分类号： H03L1/026 , G01S19/235 , H03L1/022 , H03L7/1976
摘要： To determine the level of frequency drift of a crystal oscillator as a result of a change in the its temperature, the temperature of the crystal oscillator is sensed and used together with previously stored data that includes a multitude of drift values of the frequency of the crystal oscillator each associated with a temperature of the crystal oscillator. Optionally, upon initialization of a GPS receiver in which the crystal oscillator is disposed, an initial temperature of the crystal oscillator is measured and a PLL is set to an initial frequency in association with the initial temperature. When acquisition fails in a region, the ppm region is changed. The temperature of the crystal oscillator is periodically measured and compared with the initial temperature, and the acquisition process is reset if there is a significant change in temperature. The GPS processor enters the tracking phase when acquisition is successful.
摘要翻译：为了确定晶体振荡器的温度变化导致的晶体振荡器的频率漂移，晶体振荡器的温度与先前存储的包含晶体频率漂移值的数据一起被检测并使用每个振荡器都与晶体振荡器的温度相关联。可选地，在其中设置晶体振荡器的GPS接收机初始化时，测量晶体振荡器的初始温度，并将PLL设置为与初始温度相关联的初始频率。当区域中的采集失败时，ppm区域发生变化。周期性地测量晶体振荡器的温度并将其与初始温度进行比较，如果温度有明显变化，则采集过程将被重置。采集成功后，GPS处理器进入跟踪阶段。

4. 发明申请

WO2011082182A1 GNSS RECEPTION USING DISTRIBUTED TIME SYNCHRONIZATION 审中-公开
标题翻译：使用分布式时间同步的GNSS接收
公开(公告)号：WO2011082182A1
公开(公告)日：2011-07-07
申请号：PCT/US2010/062258
申请日：2010-12-28
申请人： MAXLINEAR, INC. , LING, Curtis
发明人： LING, Curtis
IPC分类号： G01S3/02
CPC分类号： H04L7/0079 , G01S19/05 , G01S19/235 , G01S19/246 , H04B1/707
摘要： A GNSS receiver communicates with any connectivity device, such as a WiFi device that is, in turn, in communication with a wired network having access to the DTI timing. Such connectivity devices may set their timing and frame synchronization to the DTI and thus serve as Geopositiong beacons, thereby enabling the GNSS receiver to accurately determine its position. The GNSS receiver may also use the DTI timing supplied by such a network to perform relatively long integration time so as to achieve substantially improved sensitivity that is necessary for indoor Geopositioning applications. Furthermore, the GNSS data, such as satellite orbital information, may also be propagated by such devices at high speed. By providing this data to the GNSS receivers via such connectivity devices in a rapid fashion, the GNSS receivers are enabled to receive the transmitted data associated with the satellite without waiting for the GNSS transmission from the satellites.
摘要翻译： GNSS接收器与任何连接设备进行通信，诸如与具有访问DTI定时的有线网络通信的WiFi设备。这样的连接设备可以将它们的定时和帧同步设置为DTI，从而用作Geopositiong信标，从而使GNSS接收机能够准确地确定其位置。 GNSS接收机还可以使用由这种网络提供的DTI定时来执行相对较长的积分时间，以便实现对于室内地理定位应用所需的显着提高的灵敏度。此外，诸如卫星轨道信息的GNSS数据也可以由这些设备以高速传播。通过以快速方式通过这种连接装置向GNSS接收机提供该数据，GNSS接收机能够接收与卫星相关联的发射数据，而不用等待来自卫星的GNSS传输。

5. 发明申请

WO2009035790A1 TUNER FOR CABLE, SATELLITE AND BROADCAST APPLICATIONS 审中-公开
标题翻译：电缆，卫星和广播应用的调谐器
公开(公告)号：WO2009035790A1
公开(公告)日：2009-03-19
申请号：PCT/US2008/072013
申请日：2008-08-01
申请人： MAXLINEAR, INC. , LING, Curtis , TIERNEY, Patrick , AKELLA, Ramakrishna
发明人： LING, Curtis , TIERNEY, Patrick , AKELLA, Ramakrishna
IPC分类号： H04B1/18
CPC分类号： H04N5/50 , H04N5/4401 , H04N5/4446 , H04N5/455 , H04N21/4263 , H04N21/43632 , H04N21/4382 , H04N21/443
摘要： A tuner includes, in part, one or mixers, one or more filters, one or more variable gain stages, one or more analog to digital converters, and a baseband processor. Each filter is responsive to an associated mixer's output signal. Each variable gain stage is responsive to an associated filter's output. Each analog-to-digital converter is adapted to convert the output signal of an associated variable gain stage to a digital signal. The baseband processor is responsive to the digital signal supplied by the analog-to-digital converter(s). The baseband processor is further configured to supply a signal to be demodulated by a processing unit external to the integrated circuit. The baseband processor performs no or a fraction of the required demodulation functions. The processing unit may be a central processing unit or a graphical processing unit.
摘要翻译：调谐器部分地包括一个或者混频器，一个或多个滤波器，一个或多个可变增益级，一个或多个模数转换器和基带处理器。每个滤波器响应于相关混频器的输出信号。每个可变增益级都响应相关过滤器的输出。每个模拟 - 数字转换器适于将相关联的可变增益级的输出信号转换为数字信号。基带处理器响应于由模数转换器提供的数字信号。基带处理器还被配置为提供要由集成电路外部的处理单元解调的信号。基带处理器执行所需解调功能的任何部分或一部分。处理单元可以是中央处理单元或图形处理单元。

6. 发明申请

WO2008103996A1 CHANNEL CHANGE LATENCY REDUCTION 审中-公开
标题翻译：频道更改减少
公开(公告)号：WO2008103996A1
公开(公告)日：2008-08-28
申请号：PCT/US2008/054915
申请日：2008-02-25
申请人： MAXLINEAR, INC. , RAMESH, Sridhar , LING, Curtis , AKELLA, Ramakrishna , LEE, Brenndon
发明人： RAMESH, Sridhar , LING, Curtis , AKELLA, Ramakrishna , LEE, Brenndon
IPC分类号： H04N7/173
CPC分类号： H04H60/43 , H04H20/26 , H04H20/40 , H04H60/11 , H04N21/41407 , H04N21/4384
摘要： A wireless communication system is enhanced to allow for low-latency channel surfing and to enable a user to quickly see the content carried over a selected channel while searching channels for desired content. The techniques for reducing the channel change latency may be implemented in a transmitter, receiver, or in a combination of transmitter and receiver. The wireless communication system is optionally a DVB-H communication system. The transmitter may generate and transmit one or more auxiliary channels, where each auxiliary channel contains reduced resolution content corresponding to one or more channels. The receiver may process the one or more auxiliary channels to present the reduced resolution content while processing the full resolution channel for display. The receiver caches portions of content from one or more non-selected channels and presents the cached content when the channel is selected while concurrently searching and processing the full resolution channel content.
摘要翻译：增强无线通信系统以允许低等待时间的信道冲浪，并且使得用户能够在搜索频道寻找所需内容的同时快速查看通过所选频道携带的内容。用于减少信道改变等待时间的技术可以在发射机，接收机或发射机和接收机的组合中实现。无线通信系统可选地是DVB-H通信系统。发射机可以生成和发送一个或多个辅助信道，其中每个辅助信道包含对应于一个或多个信道的降低的分辨率内容。接收机可以处理一个或多个辅助信道以呈现降低的分辨率内容，同时处理用于显示的全分辨率信道。接收器从一个或多个非选择的信道缓存部分内容，并且在同时搜索和处理全分辨率信道内容的同时选择信道时呈现缓存的内容。

7. 发明申请

WO2008049114A1 LOW COMPLEXITY DIVERSITY RECEIVER 审中-公开
标题翻译：低复杂度多样性接收器
公开(公告)号：WO2008049114A1
公开(公告)日：2008-04-24
申请号：PCT/US2007/081968
申请日：2007-10-19
申请人： MaxLinear, Inc. , LING, Curtis
发明人： LING, Curtis
IPC分类号： H04B7/08
CPC分类号： H04B7/084
摘要： A diversity receiver and methods of diversity combining are described herein. Diversity combining can be implemented in the front-end signal path of a receiver, without the need to digitally demodulate the baseband signals. Each diversity path is downconverted using a common LO (320). A portion of each downconverted diversity path is filtered (354-1) and coupled to an input of a correlator (340-1, 340-2). The diversity paths are paired for the purposes of correlation. The output of the correlator is used to adjust the phase (362-1) of one of the diversity paths. The amplitude of each diversity path can be equalized or can be adjusted based on a signal metric. The phase adjusted diversity signals can be summed in a signal combiner. (370-1, 370-2). The summed signal can be processed as a single receive signal using a single filter and baseband processor.
摘要翻译：本文描述了分集接收机和分集组合的方法。可以在接收机的前端信号路径中实现分集组合，而不需要对基带信号进行数字解调。每个分集路径使用公共LO（320）进行下变频。每个下变频分集路径的一部分被滤波（354-1）并且耦合到相关器（340-1,340-2）的输入端。为了相关的目的，分集路径配对。相关器的输出用于调整一个分集路径的相位（362-1）。可以基于信号度量来均衡或者可以调整每个分集路径的幅度。相位调整分集信号可以在信号组合器中相加。（370-1,370-2）。总和信号可以使用单个滤波器和基带处理器作为单个接收信号来处理。

8. 发明申请

WO2005101671A2 METHOD AND APPARATUS FOR DC OFFSET REMOVAL 审中-公开
标题翻译：用于直流偏移去除的方法和装置
公开(公告)号：WO2005101671A2
公开(公告)日：2005-10-27
申请号：PCT/US2005/012907
申请日：2005-04-13
申请人： MAXLINEAR, INC. , LING, Curtis
发明人： LING, Curtis
IPC分类号： H04B1/00
CPC分类号： H04L27/3863 , H03D3/009 , H04B1/1036 , H04B1/30
摘要： A DC offset removal method and apparatus for use with a receiver, such as a direct conversion receiver. The DC offset error can be upconverted to an intermediate frequency where it appears as a DC offset spurious signal. The DC offset spurious signal can be amplified and downconverted back to a DC signal. The DC signal can be used to determine an offset correction value that can be coupled to a signal path to substantially remove the DC offset error. An embodiment is disclosed that allows a single module to be used to remove the static and dynamic DC offset error components. Another embodiment includes separate portions for the removal of static and dynamic offset errors.
摘要翻译：一种用于与诸如直接转换接收器的接收器一起使用的DC偏移去除方法和装置。 DC偏移误差可以上变频到中间频率，其中它显示为直流偏移寄生信号。 DC偏置寄生信号可以放大并下变频回DC信号。 DC信号可以用于确定可以耦合到信号路径以实质上去除DC偏移误差的偏移校正值。公开了允许单个模块用于去除静态和动态DC偏移误差分量的实施例。另一个实施例包括用于去除静态和动态偏移误差的分离部分。

9. 发明申请

WO2013109746A1 METHOD AND SYSTEM FOR MAP GENERATION FOR LOCATION AND NAVIGATION WITH USER SHARING/SOCIAL NETWORKING 审中-公开
标题翻译：用于用户共享/社交网络的位置和导航的地图生成方法和系统
公开(公告)号：WO2013109746A1
公开(公告)日：2013-07-25
申请号：PCT/US2013/021930
申请日：2013-01-17
申请人： MAXLINEAR, INC. , LING, Curtis
发明人： LING, Curtis
IPC分类号： H04W24/00
CPC分类号： H04W4/02 , G01C21/20 , G01C21/206 , G06F17/30241 , G06F17/30268 , H04N5/225
摘要： Methods and systems for map generation for location and navigation with user sharing/social networking may comprise determining a position of a wireless communication device (WCD) and capturing images of the surroundings of the WCD. Data associated with objects in the surroundings of said wireless communication device may be extracted from the captured images, positions of the objects may be determined, and the determined positions and the data may then be uploaded to a database. The position of the WCD may be determined utilizing global navigation satellite system (GNSS) signals. The elements may comprise structural and/or textual features in the surroundings of the WCD. The position of the WCD may be determined utilizing sensors in the WCD to measure a distance from a last determined or known position. The sensors may comprise a pedometer, an altimeter, a camera, and/or a compass. The positions of the extracted elements may be determined utilizing known optical characteristics of a camera in the WCD.
摘要翻译：用于具有用户共享/社交网络的位置和导航的地图生成的方法和系统可以包括确定无线通信设备（WCD）的位置并捕获WCD的周围环境的图像。可以从捕获的图像中提取与所述无线通信设备的周围环境中的对象相关联的数据，可以确定对象的位置，然后将所确定的位置和数据上传到数据库。可以使用全球导航卫星系统（GNSS）信号来确定WCD的位置。元件可以包括WCD周围的结构和/或文本特征。可以使用WCD中的传感器来确定WCD的位置，以测量与最后确定或已知位置的距离。传感器可以包括计步器，高度计，照相机和/或指南针。可以使用WCD中的相机的已知光学特性来确定所提取元素的位置。

10. 发明申请

WO2011072273A1 INTERMITTENT TRACKING FOR GNSS 审中-公开
标题翻译： GNSS的间歇跟踪
公开(公告)号：WO2011072273A1
公开(公告)日：2011-06-16
申请号：PCT/US2010/059974
申请日：2010-12-10
申请人： MAXLINEAR, INC. , LECLERCQ, Maxime , SPYROPOULOS, Ioannis , ANANDAKUMAR, Anand K. , LING, Curtis
发明人： LECLERCQ, Maxime , SPYROPOULOS, Ioannis , ANANDAKUMAR, Anand K. , LING, Curtis
IPC分类号： G01S5/14
CPC分类号： G01S19/34
摘要： A GNSS system operates intermittently and has adaptive activity and sleep time in order to reduce power consumption. The GNSS system provides an enhanced estimate of its position in the absence of GNSS signals of sufficient strength. The user's activity and behavior is modeled and used to improve performance, response time, and power consumption of the GNSS system. The user model is based, in part, on the received GNSS signals, a history of the user's positions, velocity, time, and inputs from other sensors disposed in the GNSS system, as well as data related to the network. During each activity time, the GNSS receiver performs either tracking, or acquisition followed by tracking. The GNSS receiver supports both normal acquisition as well as low-power acquisition.
摘要翻译： GNSS系统间歇运行，具有自适应活动和睡眠时间，以降低功耗。在没有足够强度的GNSS信号的情况下，GNSS系统提供其位置的增强估计。用户的活动和行为被建模并用于提高GNSS系统的性能，响应时间和功耗。用户模型部分地基于所接收的GNSS信号，用户位置的历史，速度，时间以及设置在GNSS系统中的其他传感器的输入，以及与网络有关的数据。在每个活动时间内，GNSS接收机执行跟踪或采集跟踪跟踪。 GNSS接收机支持正常采集以及低功耗采集。

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