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41. 发明授权

US06961660B2 Method and system for data detection in a global positioning system satellite receiver 有权
公开(公告)号：US06961660B2
公开(公告)日：2005-11-01
申请号：US10792143
申请日：2004-03-03
申请人： Paul A. Underbrink , Steven A. Gronemeyer
发明人： Paul A. Underbrink , Steven A. Gronemeyer
IPC分类号： G01S19/23 , G01S1/00 , H04B1/707 , G01C21/34
CPC分类号： G01S19/37 , G01S19/24 , G01S19/243 , G01S19/30 , H04B1/707
摘要： A data detection circuit within a global positioning system (GPS) satellite receiver operates to detect and decode data sent in a spread spectrum signal. The data detection circuit receives input from a radio receiver, the information containing data from a plurality of satellites. The data is supplied to a circular memory device, which determines which data corresponds to which satellite. The memory device sends the received signal to a matched filter, which decodes the signal received from each satellite. This signal is analyzed to determine whether a phase inversion due to data modulation on the received signal is present. The phase inversion can occur at boundaries, known as data epochs, in the received signal, and corresponds to data in the received signal. This data contains information relating to the position of each satellite and is collected by the data detection circuit for use by the GPS receiver.

42. 发明申请

US20050231424A1 Multi-function device with positioning system and shared processor 有权
公开(公告)号：US20050231424A1
公开(公告)日：2005-10-20
申请号：US11053113
申请日：2005-02-07
申请人： Scott Bloebaum , Andrew Chou , Benjamin Van Roy
发明人： Scott Bloebaum , Andrew Chou , Benjamin Van Roy
IPC分类号： G01S19/37 , G01S1/00 , G01S5/00 , G01S19/25 , G01S19/29 , H04B1/707 , G01S5/14
CPC分类号： H04B1/7102 , G01S5/0036 , G01S19/25 , G01S19/29 , G01S19/37 , H04B2201/70715
摘要： A multi-function device with a positioning function and a real time positioning engine is disclosed. The device contains also a shared processor used by the positioning function and other functions of the device, such as a mobile radio-communication function. The positioning engine performs in real time the most computational intensive calculations of the positioning function, such as downsampling, Doppler mixing and correlation calculations. Since the received signal need not be stored, the memory requirements of the positioning function are significantly reduced if aiding data is available.

43. 发明授权

US06950058B1 System, method, apparatus and means for providing GPS aiding data to networked receivers 失效
标题翻译：用于向联网的接收机提供GPS辅助数据的系统，方法，装置和装置
公开(公告)号：US06950058B1
公开(公告)日：2005-09-27
申请号：US10272451
申请日：2002-10-16
申请人： Desmond Davis , Yaser Rehem
发明人： Desmond Davis , Yaser Rehem
IPC分类号： G01S19/05 , G01S1/00 , H04L29/08 , G01S5/14
CPC分类号： G01S19/05 , H04L67/18
摘要： A system, method, apparatus, and means for providing GPS aiding data to networked receivers includes capturing partial aiding data at a network device, deriving accurate aiding data from the partial aiding data, and utilizing the accurate aiding data as aiding data. In some embodiments, providing GPS aiding data further includes capturing second partial signal data at a second network device, deriving accurate aiding data from an aggregation of the partial aiding data and the second partial aiding data, and forwarding the accurate aiding data to the network device and the second network device. In some embodiments, this process repeats as needed to maintain accurate timing and position information within the network.
摘要翻译：用于向网络接收机提供GPS辅助数据的系统，方法，装置和装置包括在网络设备处捕获部分辅助数据，从部分辅助数据中导出准确的辅助数据，以及利用准确的辅助数据来辅助数据。在一些实施例中，提供GPS辅助数据还包括在第二网络设备处捕获第二部分信号数据，从部分辅助数据和第二部分辅助数据的聚合中导出准确的辅助数据，以及将准确的辅助数据转发到网络设备和第二网络设备。在一些实施例中，该过程根据需要重复以在网络内维持准确的定时和位置信息。

44. 发明授权

US06856794B1 Monolithic GPS RF front end integrated circuit 有权
标题翻译：单片GPS射频前端集成电路
公开(公告)号：US06856794B1
公开(公告)日：2005-02-15
申请号：US09898826
申请日：2001-07-02
申请人： Robert Tso , Richard Joseph McConnell
发明人： Robert Tso , Richard Joseph McConnell
IPC分类号： G01S1/00 , H04B1/28 , G06F165/00
CPC分类号： G01S19/36 , G01S19/18 , H04B1/28
摘要： A highly integrated GPS RF Front End which uses a single conversion stage employs an image rejection mixer stage to eliminate the need for an image reject RF bandpass filter. Also a relatively high sample rate A/D is employed which allows a timeless monolitic IF Filter to be used. The disclosure also discusses a GPS Front End topology that is easily integrated from industry standard building blocks. With the broad variation in potential receiver designs, the present invention includes some specific receiver topologies that lend themselves to a high level of integration. The specific designs presented here are comprised of industry standard building blocks and functions that have been described elsewhere in the related art.
摘要翻译：使用单个转换级的高度集成的GPS RF前端采用镜像抑制混频器级，以消除对图像抑制RF带通滤波器的需要。还采用相对高的采样率A / D，其允许使用永恒的单层IF滤波器。本公开还讨论了可从工业标准构建块轻松集成的GPS前端拓扑。随着潜在接收器设计的广泛变化，本发明包括一些具有高度集成度的特定接收器拓扑。这里提出的具体设计包括在现有技术的其他地方描述的工业标准构建块和功能。

45. 发明申请

US20040072575A1 System and method for receiving digital satellite radio and GPS 有权
标题翻译：用于接收数字卫星无线电和GPS的系统和方法
公开(公告)号：US20040072575A1
公开(公告)日：2004-04-15
申请号：US10151471
申请日：2002-05-17
申请人： SiRF Technology, Inc.
发明人： James P. Young , Steven A. Gronemeyer
IPC分类号： H04Q007/20
CPC分类号： G01S19/46 , G01S19/12 , G01S19/235 , G01S19/48 , H04B1/3805
摘要： A combined Global Position System (nullGPSnull) and radio system for receiving GPS signals and radio signals is disclosed. The combined GPS and radio system includes a controller that controls a switchable frequency source and a mixer in signal communication with the switchable frequency source. The mixer is capable of receiving both GPS signals and radio signals and producing corresponding intermediate frequency (nullIFnull) signals in response to receiving a frequency reference signal from the switchable frequency source that has a first switch state of operation that corresponds to the mixer receiving GPS signals and a second switch state of operation the corresponds to the mixer receiving radio signals.
摘要翻译：公开了一种用于接收GPS信号和无线电信号的组合的全球定位系统（“GPS”）和无线电系统。组合的GPS和无线电系统包括控制器，其控制可切换频率源和与可切换频率源进行信号通信的混频器。混频器能够接收GPS信号和无线电信号，并且响应于接收到来自可切换频率源的频率参考信号产生相应的中频（“IF”）信号，所述频率参考信号具有对应于混频器接收的第一开关操作状态 GPS信号和第二开关操作状态对应于混频器接收无线电信号。

46. 发明申请

US20030011512A1 Location services system that reduces auto-correlation or cross-correlation in weak signals 有权
公开(公告)号：US20030011512A1
公开(公告)日：2003-01-16
申请号：US10244293
申请日：2002-09-16
申请人： SiRF Technology, Inc.
发明人： Gregory Bret Turetzky , Charles P. Norman , Henry D. Falk
IPC分类号： G01S005/14
CPC分类号： G01S19/37 , G01S5/0027 , G01S5/0036 , G01S19/09 , G01S19/21 , G01S19/25 , G01S19/26 , G01S19/30 , H04B1/7075 , H04B1/70755 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7097 , H04B2201/70715
摘要： The present invention discloses methods, apparatuses, and systems for eliminating auto- and cross-correlation in weak signal CDMA systems, such as GPS systems. The invention uses parallel data paths that allow standard correlation of signals in parallel with verification of the lock signal to determine whether the system has locked onto the proper signal within the scanned signal window. The invention can be made with multiple CPUs, a single CPU with dual input modes, on multiple IC chips, or as a single IC chip solution for small, low cost reception, downconversion, correlation, and verification systems.

47. 发明申请

US20020086684A1 Multi-mode global positioning system for use with wireless networks 有权
公开(公告)号：US20020086684A1
公开(公告)日：2002-07-04
申请号：US10068751
申请日：2002-02-05
申请人： SiRF Technology, Inc.
发明人： Ashutosh Pande , Lionel Jacques Garin , Kanwar Chadha , Gregory Bret Turetzky
IPC分类号： H04Q007/20
CPC分类号： H04W64/00 , G01S5/0009 , G01S19/05 , G01S19/09 , G01S19/235 , G01S19/25 , G01S19/48
摘要： The present invention discloses a GPS system that can operate in different modes depending on the network facilities and bandwidth available, the GPS information that can be acquired, or user or system requirements. The modes comprise standalone mode, where a mobile communications device computes the position of the device, an autonomous mode, where the mobile communications device transmits the computed position to a server, application, or PSAP in a communications network, a network aided mode, where the network aides the mobile communications device in determining the position of the device, a network based mode, and other modes.

48. 发明授权

US5917383A Compact voltage controlled ring oscillator with quadrature outputs 失效
标题翻译：具有正交输出的紧凑型压控环形振荡器
公开(公告)号：US5917383A
公开(公告)日：1999-06-29
申请号：US979191
申请日：1997-11-26
申请人： Robert Tso , Ray Michael Herman
发明人： Robert Tso , Ray Michael Herman
IPC分类号： H03F3/45 , H03K3/0231 , H03B5/02
CPC分类号： H03F3/45511 , H03K3/0231 , H03F2203/45402 , H03F2203/45418 , H03F2203/45432 , H03F2203/45496 , H03F2203/45702
摘要： The compact voltage controlled ring oscillator includes two variable delay gates (VDGs). Each input port of one variable delay gate is connected to the output port of the other variable delay gate to form a feedback loop. A control interface receives an input voltage control signal (VCON), and generates a limited and buffered voltage control signal VX, which is provided to each of the VDGs to generate VDG bias currents which are limited and monotonic with VCON. Each VDG comprises a fixed bias differential transconductance gain stage (GM1), a variable bias differential transconductance hysteresis feedback stage (GM2), and a variable bias voltage follower stage. The combination of delay control from variable hysteresis and variable voltage follower output resistance provides a compact, low power ring oscillator VCO, with over an octave of tuning range.
摘要翻译：紧凑型压控环形振荡器包括两个可变延迟门（VDG）。一个可变延迟门的每个输入端口连接到另一个可变延迟门的输出端口，形成一个反馈回路。控制接口接收输入电压控制信号（VCON），并产生限制和缓冲的电压控制信号VX，其被提供给每个VDG以产生限制VCON和VCON单调的VDG偏置电流。每个VDG包括固定偏置差分跨导增益级（GM1），可变偏置差分跨导迟滞反馈级（GM2）和可变偏置电压跟随级。来自可变滞后的延迟控制和可变电压跟随器输出电阻的组合提供了一个紧凑的低功耗环形振荡器VCO，具有超过八度的调谐范围。

49. 发明授权

US08134502B2 Method and apparatus for reducing power consumption in GNSS receivers 有权
标题翻译：降低GNSS接收机功耗的方法和装置
公开(公告)号：US08134502B2
公开(公告)日：2012-03-13
申请号：US12540978
申请日：2009-08-13
申请人： Gary Lennen
发明人： Gary Lennen
IPC分类号： G01S19/34 , G01S19/24
CPC分类号： G01S19/34 , G01S19/33
摘要： Systems and methods are disclosed to use adaptive continuous tracking (ACT) to reduce the power consumption of GNSS receivers. In GNSS receivers, a longer observation time of the satellites translates into better positioning accuracy but also consumes more power. ACT allows satellite observation time to be tuned to the desired positioning performance by dynamically adjusting the on time period of the receivers while maintaining a minimum performance metric. The performance metric may be formed from a combination of the estimated position error, the horizontal dilution of precision (HDOP), the data collection state, and the receiver operating environment as characterized by the carrier to noise ratio (CN0). ACT cyclically switches on/off the radio frequency (RF) front-end and also cyclically enables/disables the baseband hardware of the receivers to reduce power consumption while allowing the receivers to meet the minimum performance metric and ensuring continuous satellite tracking, continuous positioning fix operation, multiplexed GNSS operation, and continuous data collection.
摘要翻译：公开了系统和方法来使用自适应连续跟踪（ACT）来降低GNSS接收机的功耗。在GNSS接收机中，卫星的更长的观测时间转换为更好的定位精度，但也消耗更多的功率。 ACT允许卫星观测时间通过在保持最小性能度量的同时动态调整接收机的接通时间周期来调整到期望的定位性能。性能度量可以由估计位置误差，水平稀疏精度（HDOP），数据收集状态和以载波噪声比（CN0）表征的接收机操作环境的组合形成。 ACT周期性地打开/关闭射频（RF）前端，并且还周期性地启用/禁用接收机的基带硬件以降低功耗，同时允许接收机满足最低性能指标并确保连续卫星跟踪，连续定位固定操作，多路GNSS操作和连续数据采集。

50. 发明授权

US08103289B2 System of utilizing cell information to locate a wireless device 有权
标题翻译：利用小区信息定位无线设备的系统
公开(公告)号：US08103289B2
公开(公告)日：2012-01-24
申请号：US13112807
申请日：2011-05-20
申请人： Ashutosh Pande , Lionel Jacques Garin
发明人： Ashutosh Pande , Lionel Jacques Garin
IPC分类号： H04W24/00
CPC分类号： G01S19/256 , G01S5/0252 , G01S19/06 , G01S19/252 , H04M2250/10 , H04W4/02 , H04W64/00
摘要： A system is described that utilizes the measured characteristics of a cell site or a plurality of cell sites (100, 102, 104) and the cellular identification to selectively provide a wireless device (118) with location aiding from a cellular network server (120). The system may include a basestation (106, 108, 110) located within the cell site, a cellular measurement unit located in the wireless device (118), and a database (214) containing positional assistance information corresponding to the characteristic information. The system may also include a processing unit in signal communication with the basestation and the database (214) and a positional determination unit in the wireless device (118).
摘要翻译：描述了利用小区站点或多个小区站点（100,102,104）的测量特性并且蜂窝标识选择性地向无线设备（118）提供来自蜂窝网络服务器（120）的位置的系统，。系统可以包括位于小区站点内的基站（106,108,110），位于无线设备（118）中的蜂窝测量单元，以及包含对应于特征信息的位置辅助信息的数据库（214）。系统还可以包括与基站和数据库（214）进行信号通信的处理单元和无线设备（118）中的位置确定单元。

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