Navigation system and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4445118
SERIAL NO

06266253

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a global positioning system (GPS), such as the NAVSTAR/GPS system, wherein the position coordinates of user terminals (14) are obtained by processing multiple signals transmitted by a constellation of orbiting satellites (16), an acquisition-aiding signal generated by an earth-based control station (12) is relayed to user terminals via a geostationary satellite (10) to simplify user equipment. The aiding signal is FSK modulated on a reference channel slightly offset from the standard GPS channel. The aiding signal identifies satellites in view having best geometry and includes Doppler prediction data as well as GPS satellite coordinates and identification data associated with user terminals within an area being served by the control station (12) and relay satellite (10). The aiding signal significantly reduces user equipment by simplifying spread spectrum signal demodulation and reducing data processing functions previously carried out at the user terminals (14).

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATIONWASHINGTON, DC1342

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sennott, James W Bloomington, IL 8 1753
Taylor, Ralph E Silver Spring, MD 1 654

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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6925381 Methods, systems and computer program products for ride matching based on current location information 16 2003
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7627422 Methods, systems and computer program products for ride matching based on selection criteria and drive characteristic information 15 2006
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7941267 Methods, systems and computer program products for ride matching based on selection criteria and driver characteristic information 7 2009
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7616705 Monolithic GPS RF front end integrated circuit 1 2001
7577448 Multi-mode global positioning system for use with wireless networks 55 2002
7719466 Communications systems that reduces auto-correlation or cross-correlation in weak signals 0 2007
 
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6531982 Field unit for use in a GPS system 214 1997
6606349 Spread spectrum receiver performance improvement 14 1999
6448925 Jamming detection and blanking for GPS receivers 29 1999
6577271 Signal detector employing coherent integration 23 1999
6304216 Signal detector employing correlation analysis of non-uniform and disjoint sample segments 67 1999
6278403 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver 15 1999
7545854 Doppler corrected spread spectrum matched filter 2 2000
6952440 Signal detector employing a Doppler phase correction system 38 2000
6931055 Signal detector employing a doppler phase correction system 15 2000
6788655 Personal communications device with ratio counter 14 2000
6714158 Method and system for data detection in a global positioning system satellite receiver 12 2000
7885314 Cancellation system and method for a wireless positioning system 4 2000
6671620 Method and apparatus for determining global position using almanac information 150 2000
7711038 System and method for despreading in a spread spectrum matched filter 0 2000
7197305 Apparatus for reducing auto-correlation or cross-correlation in weak CDMA signals 3 2001
7106786 Method for reducing auto-correlation or cross-correlation in weak signals 6 2001
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6931233 GPS RF front end IC with programmable frequency synthesizer for use in wireless phones 37 2001
6496145 Signal detector employing coherent integration 7 2001
6519277 Accelerated selection of a base station in a wireless communication system 20 2001
7047023 GPS RF front end IC with frequency plan for improved integrability 11 2001
7747236 Method and apparatus for estimating local oscillator frequency for GPS receivers 2 2001
6778136 Fast acquisition of GPS signal 140 2001
7113552 Phase sampling techniques using amplitude bits for digital receivers 1 2001
7671489 Method and apparatus for selectively maintaining circuit power when higher voltages are present 3 2002
6680703 Method and apparatus for optimally tuning a circularly polarized patch antenna after installation 7 2002
6703971 Mode determination for mobile GPS terminals 128 2002
7076256 Method and apparatus for transmitting position data using control channels in wireless networks 28 2002
7877104 Method for synchronizing a radio network using end user radio terminals 9 2002
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6707423 Location services system that reduces auto-correlation or cross-correlation in weak signals 26 2002
7545319 Configurable satellite positioning system receivers with programmable inputs 2 2003
7002516 Signal detector employing correlation analysis of non-uniform and disjoint sample segments 7 2003
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7183972 Communications system that reduces auto-correlation or cross-correlation in weak signals 3 2003
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7151485 Generic satellite positioning system receivers with selectable inputs and outputs 4 2004
7852905 System and method for despreading in a spread spectrum matched filter 1 2004
8138972 Signal processing system for satellite positioning signals 13 2004
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7369830 Monolithic GPS RF front end integrated circuit 1 2004
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8244271 Distributed data collection of satellite data 1 2004
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7929928 Frequency phase correction system 3 2004
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7949362 Satellite positioning aided communication system selection 1 2004
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8078189 System and method for providing location based services over a network 22 2005
7512385 GPS RF front end IC with programmable frequency synthesizer for use in wireless phones 1 2005
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7269511 Method and system for data detection in a global positioning system satellite receiver 1 2005
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7925210 Synchronizing a radio network with end user radio terminals 1 2005
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7680178 Cross-correlation detection and elimination in a receiver 4 2005
7668554 Network system for aided GPS broadcast positioning 1 2005
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7365680 Location services system that reduces auto-correlation or cross-correlation in weak signals 3 2006
7933627 GPS RF front end IC with frequency plan for improved integrability 1 2006
7986952 Method and apparatus for transmitting position data using control channels in wireless networks 4 2006
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7724807 Method for reducing auto-correlation or cross-correlation in weak signals 1 2006
7508340 Generic Satellite Positioning System receivers with selectable inputs and outputs 1 2006
8164517 Global positioning system receiver timeline management 0 2006
7999733 Fast reacquisition of a GPS signal 1 2007
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8116976 Satellite based positioning method and system for coarse location positioning 1 2007
7969351 Mode determination for mobile GPS terminals 1 2007
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8144053 System and method for verifying consistent measurements in performing GPS positioning 0 2008
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8437693 Synchronizing a radio network with end user radio terminals 3 2011
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8947300 Control and features for satellite positioning system receivers 0 2011
8593345 Signal processing system for satellite positioning signals 0 2012
8810450 Global positioning system receiver timeline management 0 2012
 
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6526339 GPS controlled multiple source material application 15 2000
7437997 Method for delivering replacement rail ties using GPS techniques 7 2008
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8843515 Methods and systems of aggregating information of social networks based on geographical locations via a network 14 2013
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7593712 System and method for using location information to execute an action 58 2005
7418503 Anonymous location service for wireless networks 32 2006
7941130 System and method for using location information to execute an action 32 2006
7636575 Third party location query for wireless networks 22 2006
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8010126 Surveying wireless device users by location 19 2006
8644506 Location-based security rules 33 2007
8260239 System and method for using location information to execute an action 7 2008
7844284 Third party location query for wireless networks 20 2009
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7873369 Location blocking service for wireless networks 22 2009
8483724 Third party location query for wireless networks 0 2011
9020489 System and method for using location information to execute an action 1 2012
8825035 System and method for remote control of appliances utilizing mobile location-based applications 1 2012
8645505 Anonymous location service for wireless networks 0 2013
9466076 Location blocking service from a web advertiser 0 2013
9078094 Third party location query for wireless networks 0 2013
8755777 Identity blocking service from a wireless service provider 0 2013
8718618 Identity blocking service from a wireless service provider 0 2013
8874140 Location blocking service from a wireless service provider 0 2013
8805414 Surveying wireless device users by location 0 2013
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9501780 Surveying wireless device users by location 0 2014
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9341716 Method, apparatus and system for GPS time synchronization using cellular signal bursts 0 2006
 
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8797210 Remote tracking device and a system and method for two-way voice communication between the device and a monitoring center 0 2006
7936262 Remote tracking system with a dedicated monitoring center 15 2006
7737841 Alarm and alarm management system for remote tracking devices 19 2006
7804412 Remote tracking and communication device 13 2008
8232876 System and method for monitoring individuals using a beacon and intelligent remote tracking device 5 2009
8013736 Alarm and alarm management system for remote tracking devices 12 2010
8514070 Tracking device incorporating enhanced security mounting strap 2 2010
8031077 Remote tracking and communication device 5 2010
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9551582 Mobile communication device 0 2015
 
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7154438 Prioritized list of potential culled satellite ephemeris information for quick, accurate assisted locating satellite location determination 0 2005
 
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8126889 Location fidelity adjustment based on mobile subscriber privacy profile 32 2002
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7426380 Location derived presence information 71 2003
8489874 Encryption STE communications through private branch exchange (PBX) 0 2004
8280466 Four frequency band single GSM antenna 0 2004
8239669 Reach-back communications terminal with selectable networking options 1 2004
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7183973 Culled satellite ephemeris information based on accurate distance in range calculations, for quick, accurate assisted locating satellite location determination 0 2005
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7761095 Secure transmission over satellite phone network 2 2005
7724902 Faceplate for quick removal and securing of encryption device 4 2005
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8660573 Location service requests throttling 2 2005
7091905 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 0 2005
7825780 Cellular augmented vehicle alarm notification together with location services for position of an alarming vehicle 12 2005
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9282451 Automatic location identification (ALI) service requests steering, connection sharing and protocol translation 0 2005
* 7113128 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 18 2006
8150363 Enhanced E911 network access for call centers 10 2006
* 2006/0202,888 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 2 2006
9154906 Area watcher for wireless network 0 2006
* 2009/0015,461 CELLULAR AUGMENTED RADAR/LASER DETECTOR 10 2006
7471236 Cellular augmented radar/laser detector 29 2006
7899450 Cellular augmented radar/laser detection using local mobile network within cellular network 8 2006
* 2007/0207,797 Cellular augmented radar/laser detection using local mobile network within cellular network 10 2006
* 2007/0121,798 Public service answering point (PSAP) proxy 5 2006
7782254 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 9 2006
* 2008/0036,655 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 7 2006
7907551 Voice over internet protocol (VoIP) location based 911 conferencing 15 2006
7626951 Voice Over Internet Protocol (VoIP) location based conferencing 84 2006
7933385 Emergency alert for voice over internet protocol (VoIP) 10 2006
8290505 Consequential location derived information 0 2006
8467320 Voice over internet protocol (VoIP) multi-user conferencing 2 2006
* 2007/0091,831 Voice over internet protocol (VoIP) multi-user conferencing 7 2006
8059789 Automatic location identification (ALI) emergency services pseudo key (ESPK) 3 2006
8532266 Efficient usage of emergency services keys 0 2007
* 2007/0274,463 Efficient usage of emergency services keys 0 2007
7411546 Other cell sites used as reference point to cull satellite ephemeris information for quick, accurate assisted locating satellite location determination 4 2007
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* 2009/0051,590 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 0 2007
7489273 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 4 2007
7966013 Roaming gateway enabling location based services (LBS) roaming for user plane in CDMA networks without requiring use of a mobile positioning center (MPC) 6 2007
8032112 Location derived presence information 8 2008
* 2008/0119,204 Location derived presence information 3 2008
* 2008/0249,796 Voice over internet protocol (VoIP) location based commercial prospect conferencing 6 2008
8576991 End-to-end logic tracing of complex call flows in a distributed call system 1 2008
9413889 House number normalization for master street address guide (MSAG) address matching 0 2008
* 2009/0077,077 Optimal selection of MSAG address for valid civic/postal address 3 2008
7764219 Cellular augmented radar/laser detector 21 2008
* 2009/0079,614 Cellular augmented radar/laser detector 9 2008
* 2010/0080,216 Real-time communication blocking for Dot Not Call" registered information 0 2008
7929530 Ancillary data support in session initiation protocol (SIP) messaging 6 2008
* 2009/0149,193 Creating optimum temporal location trigger for multiple requests 0 2008
8068587 Nationwide table routing of voice over internet protocol (VOIP) emergency calls 4 2009
* 2010/0046,721 Nationwide table routing of voice over internet protocol (VoIP) emergency calls 3 2009
8892128 Location based geo-reminders 2 2009
8525681 Location based proximity alert 6 2009
8150364 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 0 2009
* 2010/0090,827 Location based proximity alert 13 2009
* 2010/0093,371 Location based geo-reminders 14 2009
8089401 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 3 2009
* 2010/0045,520 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 0 2009
7890051 Secure transmission over satellite phone network 0 2010
7965222 Cellular augmented radar/laser detector 12 2010
* 2010/0238,065 Cellular augmented radar/laser detector 12 2010
* 2010/0323,674 Mobile based area event handling when currently visited network does not cover area 1 2010
* 2011/0013,541 Voice over internet protocol (VoIP) location based 911 conferencing 10 2010
9390615 Emergency alert for voice over internet protocol (VoIP) 0 2010
* 2011/0019,664 Emergency alert for voice over internet protocol (VoIP) 4 2010
8336664 Telematics basic mobile device safety interlock 39 2010
8515414 Cellular augmented radar/laser detection using local mobile network within cellular network 5 2011
* 2011/0149,933 Cellular augmented radar/laser detection using local mobile network within cellular network 4 2011
8913989 Secure transmission over satellite phone network 0 2011
9130963 Ancillary data support in session initiation protocol (SIP) messaging 0 2011
8688087 N-dimensional affinity confluencer 3 2011
8190151 Roaming gateway enabling location based services (LBS) roaming for user plane in CDMA networks without requiring use of a mobile positioning center (MPC) 3 2011
8315599 Location privacy selector 7 2011
8532277 Location derived presence information 1 2011
8942743 iALERT enhanced alert manager 1 2011
* 8681044 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 0 2011
8682321 Mobile internet protocol (IP) location 1 2012
8688174 Integrated, detachable ear bud device for a wireless phone 4 2012
8406728 Enhanced E911 network access for call centers 3 2012
8369825 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 3 2012
8885796 Extended efficient usage of emergency services keys 0 2012
9479344 Anonymous voice conversation 0 2012
8831556 Unique global identifier header for minimizing prank emergency 911 calls 0 2012
9220958 Consequential location derived information 0 2012
9204294 Location privacy selector 0 2012
9313637 Wireless emergency caller profile data delivery over a legacy interface 0 2012
8984591 Authentication via motion of wireless device movement 0 2012
8798572 Solutions for voice over internet protocol (VoIP) 911 location services 0 2013
9544260 Rapid assignment dynamic ownership queue 0 2013
9420444 Enhanced E911 network access for call centers 0 2013
9338153 Secure distribution of non-privileged authentication credentials 0 2013
9002347 Transmitter augmented radar/laser detection using local mobile network within a wide area network 0 2013
9313638 Device independent caller data access for emergency calls 0 2013
9208346 Persona-notitia intellection codifier 0 2013
8983048 Location derived presence information 1 2013
9301191 Quality of service to over the top applications used with VPN 0 2013
9042522 End-to-end logic tracing of complex call flows in a distributed call system 0 2013
9167553 GeoNexus proximity detector network 0 2013
9456301 Efficient prisoner tracking 0 2013
9198054 Aggregate location dynometer (ALD) 0 2014
9125039 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 0 2014
9288615 Location service requests throttling 0 2014
9173059 Mobile internet protocol (IP) location 0 2014
9088614 User plane location services over session initiation protocol (SIP) 0 2014
9232062 Mobile automatic location identification (ALI) for first responders 0 2014
8983047 Index of suspicion determination for communications request 1 2014
9237228 Solutions for voice over internet protocol (VoIP) 911 location services 0 2014
9599717 Wireless telecommunications location based services scheme selection 0 2014
9178996 Unique global identifier header for minimizing prank 911 calls 0 2014
9602968 Area watcher for wireless network 0 2014
9408034 Extended area event for network based proximity discovery 0 2014
9516104 Intelligent load balancer enhanced routing 0 2014
9479897 SUPL-WiFi access point controller location based services for WiFi enabled mobile devices 0 2014
9584661 Extended efficient usage of emergency services keys 0 2014
9467810 Location based geo-reminders 0 2014
9210548 iALERT enhanced alert manager 0 2014
9398419 Location derived presence information 0 2015
9326143 Authentication via motion of wireless device movement 0 2015
9467560 End-to-end logic tracing of complex call flows in a distributed call system 0 2015
9401986 Unique global identifier header for minimizing prank emergency 911 calls 0 2015
9402158 Aggregate location dynometer (ALD) 0 2015
 
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7924316 Image feature identification and motion compensation apparatus, systems, and methods 2 2007
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8798593 Location sharing and tracking using mobile phones or other wireless devices 2 2013
8798647 Tracking proximity of services provider to services consumer 4 2013
9584960 Rendez vous management using mobile phones or other mobile devices 0 2013
9167558 Methods and systems for sharing position data between subscribers involving multiple wireless providers 0 2014
9467832 Methods and systems for temporarily sharing position data between mobile-device users 0 2014
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6445340 Method and apparatus for generating a time signal 0 2001
 
LITTON SYSTEMS, INC. (1)
* 4642647 Signal generator for radio navigation system 5 1983
 
The Charles Stark Draper Laboratory, Inc. (1)
* 4841544 Digital direct sequence spread spectrum receiver 71 1987
 
AGENCE SPATIALE EUROPEENNE (1)
* 8059700 Method of processing positioning signals, in particular for indoor applications 7 2006
 
NOKIA SOLUTIONS AND NETWORKS OY (1)
* 6424890 Method and apparatus for satellite orbit interpolation using piecewise hermite interpolating polynomials 19 2000
 
IDTP HOLDINGS, INC. (2)
* 6075987 Stand alone global positioning system (GPS) and method with high sensitivity 90 1998
6295023 Methods, mobile stations and systems for acquiring global positioning system timing information 83 2000
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (2)
* 7456783 GPS signal repeater and GPS receiver of stationary orbit satellite, and method for positioning stationary orbit satellite using the same 0 2006
* 2007/0159,382 GPS signal repeater and GPS receiver of stationary orbit satellite, and method for positioning stationary orbit satellite using the same 1 2006
 
GENERAL INSTRUMENT CORPORATION (GIC-4) (1)
* 5313215 Satellite identification and antenna alignment 21 1992
 
GENERAL ELECTRIC COMPANY (1)
* 5579014 Parallel correlator for global positioning system receiver 25 1995
 
QUALCOMM INCORPORATED (15)
* 5848099 Method and system for testing phase imbalance in QPSK receivers 10 1996
* 6327534 Unambiguous position determination using two low-earth orbit satellites 32 1996
6298238 Fast user terminal position determination in a satellite communications system 15 1998
* 6137441 Accurate range and range rate determination in a satellite communications system 44 1998
* 6134483 Method and apparatus for efficient GPS assistance in a communication system 158 1999
6369754 Fine positioning of a user terminal in a satellite communication system 33 2000
* 6856282 Directly acquiring precision code GPS signals 148 2002
* 2003/0151,547 Directly acquiring precision code GPS signals 11 2002
6816111 Calibration and correction system for satellite position location systems 136 2003
7096132 Procedure for estimating a parameter of a local maxima or minima of a function 6 2003
7505757 Location based service (LBS) system, method and apparatus for triggering of mobile station LBS applications 13 2004
* 2004/0235,454 Location based service (LBS) system, method and apparatus for triggering of mobile station LBS applications 4 2004
8473205 Procedure for searching for position determination signals using a plurality of search modes 0 2004
8938253 Location based service (LBS) system, method and apparatus for triggering of mobile station LBS applications 0 2009
* 2009/0176,506 LOCATION BASED SERVICE (LBS) SYSTEM, METHOD AND APPARATUS FOR TRIGGERING OF MOBILE STATION LBS APPLICATIONS 5 2009
 
HEROG CONTRACTING CORP. (1)
* 2005/0235,864 Method for delivering replacement rail ties using GPS techniques 0 2004
 
VERIZON PATENT AND LICENSING INC. (1)
7366492 Method and system for mobile location detection using handoff information 56 2002
 
MAISHI ELECTRONIC (SHANGHAI) LTD (2)
* 7710317 Method for GPS positioning in a weak signal environment 13 2006
* 2007/0183,486 Method for GPS positioning in a weak signal environment 15 2006
 
Ono Pharmaceutical Co., Ltd. (2)
8013787 Control and features for satellite positioning system receivers 0 2004
* 2009/0040,103 Control and features for satellite positioning system receivers 16 2004
 
SNAPTRACK, INC. (41)
* 6133871 GPS receiver having power management 192 1996
* 5874914 GPS receiver utilizing a communication link 447 1996
* 5663734 GPS receiver and method for processing GPS signals 517 1996
* 6002363 Combined GPS positioning system and communications system utilizing shared circuitry 272 1996
* 5884214 GPS receiver and method for processing GPS signals 217 1996
* 5831574 Method and apparatus for determining the location of an object which may have an obstructed view of the sky 206 1996
* 5825327 GPS receivers and garments containing GPS receivers and methods for using these GPS receivers 302 1996
* 5841396 GPS receiver utilizing a communication link 499 1996
* 5812087 Method and apparatus for satellite positioning system based time measurement 389 1997
6208290 GPS receiver utilizing a communication link 255 1997
* 5781156 GPS receiver and method for processing GPS signals 295 1997
* 5945944 Method and apparatus for determining time for GPS receivers 405 1997
* 6107960 Reducing cross-interference in a combined GPS receiver and communication system 184 1998
6185427 Distributed satellite position system processing and application network 422 1998
* 6061018 Method and system for using altitude information in a satellite positioning system 329 1998
* 6052081 Method and apparatus for satellite positioning system based time measurement 284 1998
* 6133873 Method and apparatus for adaptively processing GPS signals in a GPS receiver 154 1998
6236354 Reducing satellite signal interference in a global positioning system receiver 138 1998
* 6064336 GPS receiver utilizing a communication link 375 1998
6259399 GPS receivers and garments containing GPS receivers and methods for using these GPS receivers 94 1998
* 6133874 Method and apparatus for acquiring satellite positioning system signals 370 1998
6272430 GPS receiver and method for processing GPS signals 75 1998
* 6104340 GPS receiver and method for processing GPS signals 152 1998
* 6016119 Method and apparatus for determining the location of an object which may have an obstructed view of the sky 198 1998
6677894 Method and apparatus for providing location-based information via a computer network 561 1998
* 6111540 Combined GPS positioning system and communications system utilizing shared circuitry 161 1999
6377209 Method and apparatus for satellite positioning system (SPS) time measurement 175 2000
6307504 Method and system for using altitude information in a satellite positioning system 172 2000
6239742 Method and apparatus for satellite positioning system based time measurement 192 2000
* 6400314 GPS receiver utilizing a communication link 193 2000
6661372 Client-server based remote locator device 229 2000
6433731 Method and apparatus for determining time in a satellite positioning system 49 2000
6433734 Method and apparatus for determining time for GPS receivers 185 2000
6421002 GPS receiver utilizing a communication link 200 2001
6542821 GPS receiver and method for processing GPS signals 67 2001
6583757 Method and apparatus for satellite positioning system (SPS) time measurement 47 2001
6597311 Method and apparatus for determining time in a satellite positioning system 169 2002
6725159 GPS receiver and method for processing GPS signals 149 2003
6839021 Method and apparatus for determining time in a satellite positioning system 119 2003
6885337 Methods and apparatus for determining the position of a mobile terminal using localized source assistance information 5 2003
* 2005/0052,318 METHODS AND APPARATUS FOR DETERMINING THE POSITION OF A MOBILE TERMINAL USING LOCALIZED SOURCE ASSISTANCE INFORMATION 19 2003
 
NISSAN MOTOR CO., LTD. (1)
* 4743913 Hybrid navigation system for determining a relative position and direction of a vehicle and method therefor 79 1987
 
ERICSSON INC. (6)
* 6070078 Reduced global positioning system receiver code shift search space for a cellular telephone system 48 1997
* 6035202 Method and apparatus for locating a mobile unit 31 1997
6204808 Method and system for aiding GPS receivers via a cellular or PCS network 128 1999
6188351 Method for improving signal acquistion in a global positioning system receiver 130 1999
* 6225944 Manual reporting of location data in a mobile communications network 155 1999
* 6603978 Accurate GPS time estimate based on information from a wireless communications system 42 2000
 
Pioneer Electronic Corporation (5)
* 4890233 Vehicle bearing detection and data processing methods applicable to vehicle navigation system 162 1987
* 4983980 Satellite radio signal tracking method for GPS receivers 45 1990
* 5059969 GPS satellite signal tracking method for GPS receivers 16 1990
* 5222245 GPS receiver 31 1991
* 5373531 Signal acquisition and reception method for a global positioning system signal 22 1993
 
U-BLOX AG (1)
8816905 Satellite-based positioning system improvement 0 2012
 
AT&T DELAWARE INTELLECTUAL PROPERTY, INC. (3)
7383052 System and method for using location information to execute an action 74 2005
7509133 Location blocking service from a wireless service provider 22 2006
7412234 System and method for using location information to execute an action 50 2006
 
CSR LIMITED (4)
* 6480150 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver 12 2001
6930634 Shared memory architecture in GPS signal processing 123 2002
* 2006/0095,206 Aiding in a satellite positioning system 3 2003
7236883 Aiding in a satellite positioning system 102 2003
 
ALCATEL N.V. (1)
* 4613864 Position-fixing system 56 1984
 
MOBYTEL, INC. (1)
* 5587715 Method and apparatus for tracking a moving object 261 1993
 
IRON OAKS TECHNOLOGIES, LLC (15)
* 5299132 Vehicle locating and communicating method and apparatus using cellular telephone network 420 1992
* 5398190 Vehicle locating and communicating method and apparatus 313 1994
* 5513111 Vehicle locating and communicating method and apparatus 128 1994
* 5734981 Method and apparatus for call delivery to a mobile unit 171 1995
* 5519621 Vehicle locating and communicating method and apparatus 235 1995
* 5699275 System and method for remote patching of operating code located in a mobile unit 166 1995
* 5544225 Data messaging in a cellular communications network 213 1995
* 5771455 Data messaging in a communications network using a feature request 145 1995
* 5652707 Vehicle locating and communicating method and apparatus 84 1996
* 5832394 Vehicle locating and communicating method and apparatus 66 1997
* 6009330 Method and apparatus for call delivery to a mobile unit 85 1998
6295449 Data messaging in a communications network using a feature request 124 1998
* 5884221 Vehicle locating and communicating method and apparatus 35 1998
6240295 Data messaging in a communications network using a feature request 55 1998
* 6148202 Vehicle locating and communicating method and apparatus 50 1998
 
AERO SERVICE DIVISION OF WESTERN GEOPHYSICAL COMPANY, A DE CORP (1)
* 4894662 Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites 296 1986
 
ORBITAL SCIENCES CORPORATION (1)
* 6667713 Self-monitoring satellite system 12 2001
 
BRITISH AEROSPACE PUBLIC LIMITED COMPANY (1)
* 4691882 Co-operative satellites 41 1986
 
CATERPILLAR INC. (3)
* 5610815 Integrated vehicle positioning and navigation system, apparatus and method 318 1990
* 5375059 Vehicle position determination system and method 156 1993
* 5555503 System and method for providing accurate vehicle positioning using spatial bias techniques 90 1993
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
* 4800577 GPS receiver 25 1987
* 2006/0145,917 Gps receiver 4 2002
* Cited By Examiner