US Patent No: 4,445,118

Number of patents in Portfolio can not be more than 2000

Navigation system and method

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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, DC3903

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sennott, James W Bloomington, IL 8 1338
Taylor, Ralph E Silver Spring, MD 1 522

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BHL PATENT HOLDINGS LLC (1)
2002/0143,320 Tracking medical products with integrated circuits 11 2002

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
CSR TECHNOLOGY INC. (61)
6,531,982 Field unit for use in a GPS system 136 1997
6,606,349 Spread spectrum receiver performance improvement 14 1999
6,448,925 Jamming detection and blanking for GPS receivers 24 1999
6,577,271 Signal detector employing coherent integration 21 1999
6,304,216 Signal detector employing correlation analysis of non-uniform and disjoint sample segments 65 1999
6,278,403 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver 14 1999
7,545,854 Doppler corrected spread spectrum matched filter 1 2000
6,952,440 Signal detector employing a Doppler phase correction system 32 2000
6,931,055 Signal detector employing a doppler phase correction system 15 2000
6,788,655 Personal communications device with ratio counter 14 2000
6,714,158 Method and system for data detection in a global positioning system satellite receiver 7 2000
7,885,314 Cancellation system and method for a wireless positioning system 1 2000
6,671,620 Method and apparatus for determining global position using almanac information 81 2000
7,711,038 System and method for despreading in a spread spectrum matched filter 0 2000
7,197,305 Apparatus for reducing auto-correlation or cross-correlation in weak CDMA signals 3 2001
7,106,786 Method for reducing auto-correlation or cross-correlation in weak signals 6 2001
6,680,695 Communications system that reduces auto-correlation or cross-correlation in weak signals 54 2001
6,466,161 Location services system that reduces auto-correlation or cross-correlation in weak signals 15 2001
6,931,233 GPS RF front end IC with programmable frequency synthesizer for use in wireless phones 36 2001
6,496,145 Signal detector employing coherent integration 7 2001
6,519,277 Accelerated selection of a base station in a wireless communication system 18 2001
7,047,023 GPS RF front end IC with frequency plan for improved integrability 11 2001
7,747,236 Method and apparatus for estimating local oscillator frequency for GPS receivers 1 2001
6,778,136 Fast acquisition of GPS signal 74 2001
7,113,552 Phase sampling techniques using amplitude bits for digital receivers 1 2001
7,671,489 Method and apparatus for selectively maintaining circuit power when higher voltages are present 3 2002
6,680,703 Method and apparatus for optimally tuning a circularly polarized patch antenna after installation 6 2002
6,703,971 Mode determination for mobile GPS terminals 61 2002
7,076,256 Method and apparatus for transmitting position data using control channels in wireless networks 17 2002
7,877,104 Method for synchronizing a radio network using end user radio terminals 5 2002
6,707,423 Location services system that reduces auto-correlation or cross-correlation in weak signals 24 2002
7,545,319 Configurable satellite positioning system receivers with programmable inputs 2 2003
7,002,516 Signal detector employing correlation analysis of non-uniform and disjoint sample segments 7 2003
7,183,972 Communications system that reduces auto-correlation or cross-correlation in weak signals 3 2003
7,406,114 Pseudo-noise correlator for GPS spread-spectrum receiver 0 2003
7,151,485 Generic satellite positioning system receivers with selectable inputs and outputs 4 2004
7,852,905 System and method for despreading in a spread spectrum matched filter 0 2004
8,138,972 Signal processing system for satellite positioning signals 2 2004
7,369,830 Monolithic GPS RF front end integrated circuit 1 2004
8,244,271 Distributed data collection of satellite data 0 2004
7,929,928 Frequency phase correction system 2 2004
7,949,362 Satellite positioning aided communication system selection 0 2004
8,078,189 System and method for providing location based services over a network 5 2005
7,512,385 GPS RF front end IC with programmable frequency synthesizer for use in wireless phones 1 2005
7,269,511 Method and system for data detection in a global positioning system satellite receiver 1 2005
7,925,210 Synchronizing a radio network with end user radio terminals 0 2005
7,680,178 Cross-correlation detection and elimination in a receiver 4 2005
7,668,554 Network system for aided GPS broadcast positioning 1 2005
7,365,680 Location services system that reduces auto-correlation or cross-correlation in weak signals 3 2006
7,933,627 GPS RF front end IC with frequency plan for improved integrability 1 2006
7,986,952 Method and apparatus for transmitting position data using control channels in wireless networks 1 2006
7,724,807 Method for reducing auto-correlation or cross-correlation in weak signals 0 2006
7,508,340 Generic Satellite Positioning System receivers with selectable inputs and outputs 1 2006
8,164,517 Global positioning system receiver timeline management 0 2006
7,999,733 Fast reacquisition of a GPS signal 0 2007
8,116,976 Satellite based positioning method and system for coarse location positioning 0 2007
7,969,351 Mode determination for mobile GPS terminals 0 2007
8,144,053 System and method for verifying consistent measurements in performing GPS positioning 0 2008
8,260,548 Satellite based positioning method and system for coarse location positioning 0 2010
8,437,693 Synchronizing a radio network with end user radio terminals 2 2011
8,593,345 Signal processing system for satellite positioning signals 0 2012
 
TELECOMMUNICATION SYSTEMS, INC. (51)
6,650,288 Culled satellite ephemeris information for quick assisted GPS location determination 63 2002
8,126,889 Location fidelity adjustment based on mobile subscriber privacy profile 14 2002
7,426,380 Location derived presence information 28 2003
8,489,874 Encryption STE communications through private branch exchange (PBX) 0 2004
8,280,466 Four frequency band single GSM antenna 0 2004
8,239,669 Reach-back communications terminal with selectable networking options 1 2004
7,183,973 Culled satellite ephemeris information based on accurate distance in range calculations, for quick, accurate assisted locating satellite location determination 0 2005
7,019,690 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 8 2005
6,985,105 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 20 2005
7,761,095 Secure transmission over satellite phone network 2 2005
7,724,902 Faceplate for quick removal and securing of encryption device 4 2005
8,660,573 Location service requests throttling 0 2005
7,091,905 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 0 2005
7,825,780 Cellular augmented vehicle alarm notification together with location services for position of an alarming vehicle 7 2005
7,113,128 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 11 2006
8,150,363 Enhanced E911 network access for call centers 5 2006
7,471,236 Cellular augmented radar/laser detector 16 2006
7,899,450 Cellular augmented radar/laser detection using local mobile network within cellular network 3 2006
7,782,254 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 8 2006
7,907,551 Voice over internet protocol (VoIP) location based 911 conferencing 6 2006
7,626,951 Voice Over Internet Protocol (VoIP) location based conferencing 64 2006
7,933,385 Emergency alert for voice over internet protocol (VoIP) 6 2006
8,290,505 Consequential location derived information 0 2006
8,467,320 Voice over internet protocol (VoIP) multi-user conferencing 0 2006
8,059,789 Automatic location identification (ALI) emergency services pseudo key (ESPK) 3 2006
8,532,266 Efficient usage of emergency services keys 0 2007
7,411,546 Other cell sites used as reference point to cull satellite ephemeris information for quick, accurate assisted locating satellite location determination 4 2007
7,629,926 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 10 2007
7,489,273 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 4 2007
7,966,013 Roaming gateway enabling location based services (LBS) roaming for user plane in CDMA networks without requiring use of a mobile positioning center (MPC) 5 2007
8,032,112 Location derived presence information 3 2008
8,576,991 End-to-end logic tracing of complex call flows in a distributed call system 0 2008
7,764,219 Cellular augmented radar/laser detector 13 2008
7,929,530 Ancillary data support in session initiation protocol (SIP) messaging 5 2008
8,068,587 Nationwide table routing of voice over internet protocol (VOIP) emergency calls 3 2009
8,525,681 Location based proximity alert 0 2009
8,150,364 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 0 2009
8,089,401 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 3 2009
7,890,051 Secure transmission over satellite phone network 0 2010
7,965,222 Cellular augmented radar/laser detector 4 2010
8,336,664 Telematics basic mobile device safety interlock 3 2010
8,515,414 Cellular augmented radar/laser detection using local mobile network within cellular network 0 2011
8,688,087 N-dimensional affinity confluencer 0 2011
8,190,151 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
8,315,599 Location privacy selector 3 2011
8,532,277 Location derived presence information 0 2011
8,681,044 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 0 2011
8,682,321 Mobile internet protocol (IP) location 0 2012
8,688,174 Integrated, detachable ear bud device for a wireless phone 0 2012
8,406,728 Enhanced E911 network access for call centers 3 2012
8,369,825 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 3 2012
 
SNAPTRACK, INC. (36)
6,133,871 GPS receiver having power management 176 1996
5,874,914 GPS receiver utilizing a communication link 342 1996
5,663,734 GPS receiver and method for processing GPS signals 443 1996
6,002,363 Combined GPS positioning system and communications system utilizing shared circuitry 245 1996
5,884,214 GPS receiver and method for processing GPS signals 207 1996
5,831,574 Method and apparatus for determining the location of an object which may have an obstructed view of the sky 194 1996
5,825,327 GPS receivers and garments containing GPS receivers and methods for using these GPS receivers 255 1996
5,841,396 GPS receiver utilizing a communication link 391 1996
5,812,087 Method and apparatus for satellite positioning system based time measurement 304 1997
6,208,290 GPS receiver utilizing a communication link 168 1997
5,781,156 GPS receiver and method for processing GPS signals 277 1997
5,945,944 Method and apparatus for determining time for GPS receivers 331 1997
6,107,960 Reducing cross-interference in a combined GPS receiver and communication system 174 1998
6,185,427 Distributed satellite position system processing and application network 286 1998
6,061,018 Method and system for using altitude information in a satellite positioning system 240 1998
6,052,081 Method and apparatus for satellite positioning system based time measurement 207 1998
6,133,873 Method and apparatus for adaptively processing GPS signals in a GPS receiver 150 1998
6,236,354 Reducing satellite signal interference in a global positioning system receiver 127 1998
6,064,336 GPS receiver utilizing a communication link 283 1998
6,259,399 GPS receivers and garments containing GPS receivers and methods for using these GPS receivers 83 1998
6,133,874 Method and apparatus for acquiring satellite positioning system signals 281 1998
6,272,430 GPS receiver and method for processing GPS signals 73 1998
6,104,340 GPS receiver and method for processing GPS signals 143 1998
6,016,119 Method and apparatus for determining the location of an object which may have an obstructed view of the sky 182 1998
6,677,894 Method and apparatus for providing location-based information via a computer network 337 1998
6,111,540 Combined GPS positioning system and communications system utilizing shared circuitry 149 1999
6,377,209 Method and apparatus for satellite positioning system (SPS) time measurement 101 2000
6,307,504 Method and system for using altitude information in a satellite positioning system 106 2000
6,239,742 Method and apparatus for satellite positioning system based time measurement 120 2000
6,433,731 Method and apparatus for determining time in a satellite positioning system 48 2000
6,433,734 Method and apparatus for determining time for GPS receivers 111 2000
6,421,002 GPS receiver utilizing a communication link 127 2001
6,542,821 GPS receiver and method for processing GPS signals 65 2001
6,583,757 Method and apparatus for satellite positioning system (SPS) time measurement 45 2001
6,597,311 Method and apparatus for determining time in a satellite positioning system 100 2002
6,725,159 GPS receiver and method for processing GPS signals 77 2003
 
HAND HELD PRODUCTS, INC. (28)
7,387,253 Optical reader system comprising local host processor and optical reader 16 1999
7,270,273 Optical reader having partial frame operating mode 28 2003
7,331,523 Adaptive optical image reader 62 2004
7,124,948 Optical reader processing two-dimensional electronic representations 31 2004
7,080,786 Optical reader comprising illumination assembly and solid state image sensor 153 2004
7,275,694 Portable bar code reading device generating first and second electronic representations of a substrate 13 2004
7,147,159 Optical reader having two-dimensional solid state image sensor and light generator 18 2004
7,383,998 Optical reader system comprising host processor and optical reader 8 2005
7,428,079 Bar code reading device having partial frame image capture operating mode 7 2005
7,546,954 Bar code reading device for reading 1D or 2D bar code symbols 8 2006
7,398,930 Bar code reading device having image data in plurality of different formats 10 2006
7,398,929 Method and apparatus for reading decodable indicia 10 2006
7,434,733 Optical reader having partial frame operating mode 5 2006
7,852,519 Dual-tasking decoder for improved symbol reading 4 2007
7,492,493 Bar code reading device having plurality of operating states 5 2007
7,874,485 Adaptive optical image reader 3 2007
8,397,992 Optical reader having image sensor for reading decodable indicia 1 2008
8,196,837 Optical reader having image sensor for reading decodable indicia 0 2008
8,439,264 Reading apparatus having partial frame operating mode 1 2008
8,146,817 Reading apparatus having partial frame operating mode 0 2008
8,628,015 Indicia reading terminal including frame quality evaluation processing 0 2008
7,817,878 Imaging apparatus having plurality of operating states 4 2009
8,602,309 Bar code reading device for reading 1D or 2D bar code symbols 0 2009
8,342,411 Bar code reading device for reading 1D or 2D bar code symbols 0 2009
8,196,838 Bar code reading device for reading 1D or 2D bar code symbols 0 2009
8,587,595 Low power multi-core decoder system and method 0 2009
8,121,440 Imaging apparatus having imaging assembly 3 2010
8,702,000 Reading apparatus having partial frame operating mode 0 2013
 
GLOBAL LOCATE, INC. (23)
6,542,820 Method and apparatus for generating and distributing satellite tracking information 83 2001
6,560,534 Method and apparatus for distributing satellite tracking information 121 2001
6,704,348 Method and apparatus for computing signal correlation at multiple resolutions 17 2001
6,819,707 Method and apparatus for performing signal correlation using historical correlation data 8 2001
6,891,880 Method and apparatus for performing signal correlation 10 2002
7,190,712 Method and apparatus for performing signal correlation 7 2003
7,184,464 Apparatus for computing signal correlation at multiple resolutions 4 2003
7,158,080 Method and apparatus for using long term satellite tracking data in a remote receiver 15 2003
7,567,636 Method and apparatus for performing signal correlation using historical correlation data 5 2003
7,945,387 Method and apparatus for distribution of satellite navigation data 3 2003
7,595,752 Method and apparatus for enhanced autonomous GPS 7 2005
7,640,103 Multi-function appliance for a satellite navigation data distribution system 2 2005
7,995,682 Method and apparatus for performing signal processing using historical correlation data 1 2005
7,443,340 Method and apparatus for generating and distributing satellite tracking information 5 2006
7,548,816 Method and apparatus for generating and securely distributing long-term satellite tracking information 12 2006
8,170,086 Method and apparatus for performing signal correlation 2 2007
8,692,712 Method and apparatus for processing of satellite signals without time of day information 0 2007
8,212,719 Method and apparatus for background decoding of a satellite navigation message to maintain integrity of long term orbit information in a remote receiver 1 2007
8,134,500 Method and apparatus for enhanced autonomous GPS 2 2009
8,411,726 Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference 0 2009
8,738,290 Method and apparatus for managing network elements in a satellite navigation data distribution system 0 2010
8,472,503 Method and apparatus for performing frequency synchronization 0 2010
8,660,792 Method and apparatus for distribution of satellite navigation data 0 2011
 
BELLSOUTH INTELLECTUAL PROPERTY CORPORATION (16)
7,796,998 Method and system for delivery of a calling party's location 17 2000
6,925,381 Methods, systems and computer program products for ride matching based on current location information 8 2003
7,664,509 Location blocking service for wireless networks 19 2003
7,082,364 Methods, systems and computer program products for ride matching based on current location information 8 2005
7,738,479 Methods, systems, and computer program products for multi-channel communications using universal address book server 3 2005
7,627,422 Methods, systems and computer program products for ride matching based on selection criteria and drive characteristic information 9 2006
8,684,923 Methods systems, and computer program products for aggregating medical information 0 2006
7,889,070 Methods, systems, devices and computer program products for transmitting medical information from mobile personal medical devices 0 2006
8,639,235 System and method for using location information to execute an action 1 2008
8,742,921 Methods, systems, devices and computer program products for transmitting medical information from mobile personal medical devices 0 2010
8,165,568 Identity blocking service from a wireless service provider 9 2011
8,538,456 Surveying wireless device users by location 0 2011
8,402,117 Anonymous location service for wireless networks 0 2011
8,483,724 Third party location query for wireless networks 0 2011
8,494,501 Identity blocking service from a wireless service provider 3 2012
8,509,813 Location blocking service from a wireless service provider 0 2012
 
FUNDAMENTAL WIRELESS, LLC. (15)
5,299,132 Vehicle locating and communicating method and apparatus using cellular telephone network 302 1992
5,398,190 Vehicle locating and communicating method and apparatus 223 1994
5,513,111 Vehicle locating and communicating method and apparatus 117 1994
5,734,981 Method and apparatus for call delivery to a mobile unit 154 1995
5,519,621 Vehicle locating and communicating method and apparatus 206 1995
5,699,275 System and method for remote patching of operating code located in a mobile unit 148 1995
5,544,225 Data messaging in a cellular communications network 194 1995
5,771,455 Data messaging in a communications network using a feature request 124 1995
5,652,707 Vehicle locating and communicating method and apparatus 79 1996
5,832,394 Vehicle locating and communicating method and apparatus 59 1997
6,009,330 Method and apparatus for call delivery to a mobile unit 73 1998
6,295,449 Data messaging in a communications network using a feature request 106 1998
5,884,221 Vehicle locating and communicating method and apparatus 32 1998
6,240,295 Data messaging in a communications network using a feature request 48 1998
6,148,202 Vehicle locating and communicating method and apparatus 45 1998
 
AT&T INTELLECTUAL PROPERTY I, L.P. (14)
7,603,110 Identity blocking service from a wireless service provider 12 2005
7,593,712 System and method for using location information to execute an action 46 2005
7,418,503 Anonymous location service for wireless networks 13 2006
7,941,130 System and method for using location information to execute an action 13 2006
7,636,575 Third party location query for wireless networks 11 2006
8,010,126 Surveying wireless device users by location 9 2006
8,644,506 Location-based security rules 0 2007
8,260,239 System and method for using location information to execute an action 0 2008
7,844,284 Third party location query for wireless networks 10 2009
7,941,267 Methods, systems and computer program products for ride matching based on selection criteria and driver characteristic information 1 2009
7,873,369 Location blocking service for wireless networks 11 2009
8,645,505 Anonymous location service for wireless networks 0 2013
8,755,777 Identity blocking service from a wireless service provider 0 2013
8,718,618 Identity blocking service from a wireless service provider 0 2013
 
QUALCOMM INCORPORATED (14)
5,848,099 Method and system for testing phase imbalance in QPSK receivers 8 1996
6,327,534 Unambiguous position determination using two low-earth orbit satellites 30 1996
6,298,238 Fast user terminal position determination in a satellite communications system 14 1998
6,137,441 Accurate range and range rate determination in a satellite communications system 43 1998
6,134,483 Method and apparatus for efficient GPS assistance in a communication system 87 1999
6,369,754 Fine positioning of a user terminal in a satellite communication system 22 2000
6,400,314 GPS receiver utilizing a communication link 122 2000
6,661,372 Client-server based remote locator device 96 2000
6,856,282 Directly acquiring precision code GPS signals 76 2002
6,816,111 Calibration and correction system for satellite position location systems 62 2003
6,839,021 Method and apparatus for determining time in a satellite positioning system 53 2003
7,096,132 Procedure for estimating a parameter of a local maxima or minima of a function 6 2003
7,505,757 Location based service (LBS) system, method and apparatus for triggering of mobile station LBS applications 6 2004
8,473,205 Procedure for searching for position determination signals using a plurality of search modes 0 2004
 
WAYPORT, INC. (11)
8,417,763 Providing information to a computing device based on known location and user information 0 2004
8,478,887 Providing advertisements to a computing device based on a predetermined criterion of a wireless access point 0 2006
7,840,689 Dynamically modifying the display of a computing device to provide advertisements 2 2006
8,588,130 Distributed network communication system to provide wireless access to a computing device at a reduced rate 0 2006
8,509,246 Method and apparatus for geographic-based communications service 2 2007
8,250,204 Method and apparatus for geographic-based communications service 3 2007
8,095,647 Method and apparatus for geographic-based communications service 4 2007
8,199,733 Method and apparatus for geographic-based communications service 3 2007
8,606,851 Method and apparatus for geographic-based communications service 0 2011
8,631,128 Method and apparatus for geographic-based communications service 0 2012
8,583,723 Receiving location based advertisements on a wireless communication device 0 2012
 
SAMSUNG ELECTRONICS CO., LTD. (9)
6,526,322 Shared memory architecture in GPS signal processing 28 1999
6,389,291 Multi-mode global positioning system for use with wireless networks 105 2001
6,636,178 Signal detector employing correlation analysis of non-uniform and disjoint sample segments 8 2001
6,519,466 Multi-mode global positioning system for use with wireless networks 87 2002
6,542,823 Information transfer in a multi-mode global positioning system used with wireless networks 35 2002
6,961,660 Method and system for data detection in a global positioning system satellite receiver 37 2004
7,132,978 Generic satellite positioning system receivers with programmable inputs 1 2004
7,970,411 Aided location communication system 0 2004
7,970,412 Aided location communication system 1 2005
 
TRIMBLE NAVIGATION LIMITED (9)
5,202,829 Exploration system and method for high-accuracy and high-confidence level relative position and velocity determinations 293 1991
5,477,458 Network for carrier phase differential GPS corrections 104 1994
5,917,444 Reduction of time to first fix in an SATPS receiver 126 1995
5,883,594 GPS receiver using a message system for reducing power consumption 155 1997
6,046,687 Clandsetine location reporting for missing vehicles 42 1997
5,899,957 Carrier phase differential GPS corrections network 107 1997
5,944,770 Method and receiver using a low earth orbiting satellite signal to augment the global positioning system 77 1997
RE37408 Reduction of time to first fix in an SATPS receiver 18 2000
8,134,497 Method and system for location-dependent time-specific correction data 0 2008
 
ERICSSON INC. (8)
6,070,078 Reduced global positioning system receiver code shift search space for a cellular telephone system 43 1997
6,035,202 Method and apparatus for locating a mobile unit 27 1997
6,075,987 Stand alone global positioning system (GPS) and method with high sensitivity 77 1998
6,204,808 Method and system for aiding GPS receivers via a cellular or PCS network 104 1999
6,188,351 Method for improving signal acquistion in a global positioning system receiver 118 1999
6,225,944 Manual reporting of location data in a mobile communications network 125 1999
6,295,023 Methods, mobile stations and systems for acquiring global positioning system timing information 76 2000
6,603,978 Accurate GPS time estimate based on information from a wireless communications system 32 2000
 
WESTERN ATLAS INTERNATIONAL, INC. (8)
4,870,422 Method and system for determining position from signals from satellites 52 1986
4,860,018 Continuous wave interference rejection for reconstructed carrier receivers 47 1986
4,809,005 Multi-antenna gas receiver for seismic survey vessels 208 1988
5,014,066 System for simultaneously deriving position information from a plurality of satellite transmissions 104 1989
5,194,871 System for simultaneously deriving position information from a plurality of satellite transmissions 40 1991
5,384,574 System for determining position from suppressed carrier radio waves 35 1993
5,619,212 System for determining position from suppressed carrier radio waves 42 1995
5,805,200 System for determining position from pseudorandomly modulated radio signals 25 1997
 
SECUREALERT, INC. (7)
7,936,262 Remote tracking system with a dedicated monitoring center 8 2006
7,737,841 Alarm and alarm management system for remote tracking devices 11 2006
7,804,412 Remote tracking and communication device 8 2008
8,232,876 System and method for monitoring individuals using a beacon and intelligent remote tracking device 2 2009
8,013,736 Alarm and alarm management system for remote tracking devices 4 2010
8,514,070 Tracking device incorporating enhanced security mounting strap 0 2010
8,031,077 Remote tracking and communication device 4 2010
 
TRUEPOSITION, INC. (7)
7,440,762 TDOA/GPS hybrid wireless location system 62 2003
8,150,421 User plane uplink time difference of arrival (U-TDOA) 7 2006
7,925,274 TDOA/GPS hybrid wireless location system 3 2008
8,059,028 Hybrid GNSS and TDOA wireless location system 3 2008
8,200,239 Femto-cell location by proxy methods 3 2008
8,180,368 Femto-cell location by direct methods 5 2008
8,199,050 Hybrid GNSS and TDOA wireless location system 0 2011
 
MOTOROLA MOBILITY LLC (6)
5,420,594 Multi-mode position location method 15 1993
6,211,819 Mobile station location determination in a radio communication system 82 1999
6,429,811 Method and apparatus for compressing GPS satellite broadcast message information 54 2000
7,720,601 Method and apparatus for compressing GPS satellite broadcast message information 0 2002
6,915,210 Method of updating GPS almanac data for satellites not in view 4 2003
7,463,979 Method and apparatus for initializing an approximate position in a GPS receiver 3 2003
 
SONY ERICSSON MOBILE COMMUNICATIONS AB (6)
8,010,124 Methods, systems and computer program products for providing location determination information to an assisted location service 2 2003
6,885,337 Methods and apparatus for determining the position of a mobile terminal using localized source assistance information 3 2003
7,321,776 Estimating GPS time at cellular terminals based on timing of information from base stations and satellites 5 2003
7,453,956 Apparatus, methods and computer program products for signal acquisition using common demodulation templates 0 2004
7,358,897 Apparatus, methods and computer program products for GPS signal acquisition using an adaptive search engine 0 2004
7,248,167 Methods, computer program products, mobile terminals, and web pages for providing directional information associated with RFID enabled moveable objects 2 2005
 
GARMIN CORPORATION (5)
6,373,430 Combined global positioning system receiver and radio 64 1999
6,492,941 Combined global positioning system receiver and radio 31 2002
7,196,659 Combined global positioning system receiver and radio 9 2002
7,330,150 Combined global positioning system receiver and radio 6 2006
7,456,784 Combined global positioning system receiver and radio 2 2007
 
GARMIN LTD. (5)
7,142,900 Combined global positioning system receiver and radio 19 2001
6,816,782 Apparatus, systems and methods for navigation data transfer between portable devices 82 2002
6,768,450 System and method for wirelessly linking a GPS device and a portable electronic device 33 2002
7,034,747 System and method for wirelessly linking a GPS device and a portable electronic device 9 2004
7,729,684 Combined global positioning system receiver and radio 3 2006
 
INNOVATIVE GLOBAL SYSTEMS, LLC (5)
7,117,075 Driver activity and vehicle operation logging and reporting 52 2005
7,555,378 Driver activity and vehicle operation logging and reporting 4 2005
7,881,838 Driver activity and vehicle operation logging and reporting 13 2009
8,032,277 Driver activity and vehicle operation logging and reporting 0 2011
8,626,377 Method for data communication between a vehicle and fuel pump 0 2012
 
ITT MANUFACTURING ENTERPRISES, INC. (5)
5,041,833 Precise satellite ranging and timing system using pseudo-noise bandwidth synthesis 57 1990
5,365,450 Hybrid GPS/data line unit for rapid, precise, and robust position determination 282 1992
5,726,893 Cellular telephone with voice-in-data modem 131 1994
6,538,601 Hybrid system for position determination by a mobile communications terminal 12 2001
8,193,968 Systems and methods for space situational awareness and space weather 1 2010
 
MITAC INTERNATIONAL CORP. (5)
4,928,106 Global positioning system receiver with improved radio frequency and digital processing 79 1988
5,134,407 Global positioning system receiver digital processing technique 96 1991
5,293,170 Global positioning system receiver digital processing technique 173 1992
5,347,546 Method and apparatus for prefiltering a global positioning system receiver 41 1992
6,788,251 Method and apparatus for interference reduction in a positioning system 5 2001
 
Pioneer Electronic Corporation (5)
4,890,233 Vehicle bearing detection and data processing methods applicable to vehicle navigation system 157 1987
4,983,980 Satellite radio signal tracking method for GPS receivers 37 1990
5,059,969 GPS satellite signal tracking method for GPS receivers 12 1990
5,222,245 GPS receiver 30 1991
5,373,531 Signal acquisition and reception method for a global positioning system signal 21 1993
 
VEHICLE IP, LLC (5)
5,724,243 Method and apparatus for determining expected time of arrival 124 1995
5,983,108 Method and apparatus for a nation-wide cellular telephone network 20 1995
5,694,322 Method and apparatus for determining tax of a vehicle 123 1995
5,970,481 Method and apparatus for determining tax of a vehicle 39 1997
5,987,377 Method and apparatus for determining expected time of arrival 167 1998
 
APTINA IMAGING CORPORATION (4)
7,924,316 Image feature identification and motion compensation apparatus, systems, and methods 2 2007
7,920,746 Compressed domain image summation apparatus, systems, and methods 0 2007
7,599,566 Image feature identification and motion compensation apparatus, systems, and methods 2 2007
7,542,614 Image feature identification and motion compensation apparatus, systems, and methods 5 2007
 
BROADCOM CORPORATION (4)
7,884,762 Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal 1 2005
7,672,358 Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference 2 2006
8,358,245 Method and system for extending the usability period of long term orbit (LTO) 0 2008
8,643,541 Method and apparatus for enhanced autonomous GPS 0 2012
 
CDC PROPRIETE INTELLECTUELLE (4)
5,515,062 Location system and method with acquisition of accurate location parameters 66 1993
5,500,648 Geolocation responsive radio telecommunication system and method therefor 45 1993
5,999,125 Method and apparatus for a global positioning data service 56 1996
5,889,492 Method and apparatus for an acquisition-aided Geo-locating subscriber unit 28 1996
 
FUTURE CAPITAL L.L.C. (4)
5,454,027 Phantom mobile identification number method and apparatus 70 1993
5,913,170 Locating system and method using a mobile communications network 139 1994
5,579,376 Phantom mobile-identification number method and apparatus 103 1995
6,748,226 System and method for locating a mobile unit within the service area of a mobile communications network 64 1998
 
AT&T DELAWARE INTELLECTUAL PROPERTY, INC. (3)
7,383,052 System and method for using location information to execute an action 36 2005
7,509,133 Location blocking service from a wireless service provider 12 2006
7,412,234 System and method for using location information to execute an action 16 2006
 
CATERPILLAR INC. (3)
5,610,815 Integrated vehicle positioning and navigation system, apparatus and method 207 1990
5,375,059 Vehicle position determination system and method 128 1993
5,555,503 System and method for providing accurate vehicle positioning using spatial bias techniques 43 1993
 
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5,712,679 Security system with method for locatable portable electronic camera image transmission to a remote receiver 86 1992
6,181,373 Security system with method for locatable portable electronic camera image transmission to a remote receiver 48 1998
6,469,735 Security system with locatable portable electronic camera image transmission 4 2001
 
CSR PLC (3)
6,480,150 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver 12 2001
6,930,634 Shared memory architecture in GPS signal processing 57 2002
7,236,883 Aiding in a satellite positioning system 80 2003
 
GOOGLE INC. (3)
7,908,080 Transportation routing 10 2004
8,705,320 Audio localization using multilateration 0 2012
8,606,514 Transportation routing 0 2013
 
LUCENT TECHNOLOGIES INC. (3)
6,114,991 Auxiliary system for assisting a wireless terminal in determining its position from signals transmitted from a navigation satellite 16 1997
6,538,600 Wireless assisted GPS using a reference location 20 1999
6,922,546 GPS signal acquisition based on frequency-domain and time-domain processing 13 2000
 
SIRF TECHNOLOGY HOLDINGS, INC. (3)
7,616,705 Monolithic GPS RF front end integrated circuit 0 2001
7,577,448 Multi-mode global positioning system for use with wireless networks 36 2002
7,719,466 Communications systems that reduces auto-correlation or cross-correlation in weak signals 0 2007
 
VERIZON LABORATORIES INC. (3)
5,519,760 Cellular network-based location system 212 1994
RE38267 Cellular network-based geographic coverage area reporting method and apparatus 21 1998
RE44378 Cellular network-based location system 0 2006
 
AT&T INTELLECTUAL PROPERTY, INC. (2)
7,428,411 Location-based security rules 16 2005
7,245,925 System and method for using location information to execute an action 61 2005
 
FURUNO ELECTRIC CO., LTD. (2)
7,495,609 Mobile GPS aiding data solution 3 2006
7,463,188 Wireless CPU GPS application 3 2007
 
GARMIN SWITZERLAND GMBH (2)
7,925,320 Electronic device mount 3 2006
7,962,165 Combined global positioning system receiver and radio 0 2010
 
HERZOG CONTRACTING CORP. (2)
6,526,339 GPS controlled multiple source material application 12 2000
7,437,997 Method for delivering replacement rail ties using GPS techniques 3 2008
 
KABUSHIKI KAISHA TOSHIBA (2)
5,760,738 GPS overlay system for a geostationary satellite 4 1996
7,065,348 Communication system for providing information on position of communication party 25 2000
 
MOTOROLA, INC. (2)
5,278,832 Method and apparatus for controlling the timing within a transceiver 13 1990
6,445,927 Method and apparatus for calibrating base station locations and perceived time bias offsets in an assisted GPS transceiver 49 2000
 
NOKIA CORPORATION (2)
6,678,510 Method, apparatus and system for GPS time synchronization using cellular signal bursts 18 2001
7,085,546 Method, apparatus and system for GPS time synchronization using cellular signal bursts 3 2003
 
PANASONIC ELECTRIC WORKS CO., LTD. (2)
6,462,708 GPS-based positioning system for mobile GPS terminals 23 2001
7,009,555 GPS-based positioning system for mobile GPS terminals 15 2002
 
ROCKWELL INTERNATIONAL CORPORATION (2)
4,910,525 Audio verification system and technique for GPS receivers 9 1984
5,952,968 Method and apparatus for reducing jamming by beam forming using navigational data 35 1997
 
SEIKO EPSON CORPORATION (2)
7,535,418 Terminal apparatus, positioning method, control program for terminal apparatus, and computer readable recording medium having recorded therein control program for terminal apparatus 1 2005
7,812,764 Terminal apparatus, positioning method, control program for terminal apparatus, and computer readable recording medium having recorded therein control program for terminal apparatus 1 2009
 
SKYHOOK WIRELESS, INC. (2)
8,462,745 Methods and systems for determining location using a cellular and WLAN positioning system by selecting the best WLAN PS solution 1 2009
8,638,725 Methods and systems for determining location using a cellular and WLAN positioning system by selecting the best WLAN PS solution 1 2013
 
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6,327,471 Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff 106 1998
6,348,744 Integrated power management module 29 1998
 
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4,651,327 Decoder for spectrum diffusion signals 22 1985
6,314,508 RISC type microprocessor and information processing apparatus 0 1998
 
STEVEN M. HOFFBERG 2004-1 GRAT (2)
8,369,967 Alarm system controller and a method for controlling an alarm system 6 2011
8,364,136 Mobile system, a method of operating mobile system and a non-transitory computer readable medium for a programmable control of a mobile system 4 2011
 
TEXAS INSTRUMENTS INCORPORATED (2)
5,535,237 Method and system for a multi channel and search global position system signal processor 33 1994
7,941,164 Satellite positioning system receiver utilizing broadcast doppler information 0 2005
 
The United States of America as represented by the Secretary of the Air Force (2)
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5,119,341 Method for extending GPS to underwater applications 42 1991
 
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8,559,767 Imaging apparatus having imaging assembly 0 2012
 
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8,538,458 Location sharing and tracking using mobile phones or other wireless devices 1 2008
8,750,898 Methods and systems for annotating target locations 0 2013
 
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8,712,441 Methods and systems for temporarily sharing position data between mobile-device users 0 2013
 
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4,894,662 Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites 278 1986
 
AGENCE SPATIALE EUROPEENNE (1)
8,059,700 Method of processing positioning signals, in particular for indoor applications 2 2006
 
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4,613,864 Position-fixing system 56 1984
 
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7,321,754 Radio-frequency signal frequency conversion device for a low power RF receiver 3 2002
 
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5,390,125 Vehicle position determination system and method 157 1993
 
BRITISH AEROSPACE PUBLIC LIMITED COMPANY (1)
4,691,882 Co-operative satellites 41 1986
 
CENTRE NATIONAL D'ETUDES SPATIALES (1)
5,995,040 Global space radiopositioning and radionavigation system, beacon and receiver used in this system 27 1997
 
DENSO CORPORATION (1)
6,380,891 GPS receiver with satellite frame synchronization process 10 2000
 
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7,456,783 GPS signal repeater and GPS receiver of stationary orbit satellite, and method for positioning stationary orbit satellite using the same 0 2006
 
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8,437,414 Common wave and sideband mitigation communication systems and methods for increasing communication speeds, spectral efficiency and enabling other benefits 0 2010
 
GENERAL ELECTRIC COMPANY (1)
5,579,014 Parallel correlator for global positioning system receiver 24 1995
 
GENERAL INSTRUMENT CORPORATION (1)
5,313,215 Satellite identification and antenna alignment 17 1992
 
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7,656,350 Method and apparatus for processing a satellite positioning system signal using a cellular acquisition signal 2 2004
 
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HILL, JACK O. (1)
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5,043,736 Cellular position locating system 750 1990
 
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6,256,475 Telecommunications-assisted satellite positioning system 35 2000
 
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6,040,798 Satellite radiodetermination 76 1996
 
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6,693,953 Adaptive wireless communication receiver 35 1998
 
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7,145,507 Vehicle locating system using GPS 11 2003
 
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4,642,647 Signal generator for radio navigation system 5 1983
 
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Magellan Systems Corporation (1)
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7,710,317 Method for GPS positioning in a weak signal environment 12 2006
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
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5,587,715 Method and apparatus for tracking a moving object 240 1993
 
MOTOROLA SOLUTIONS, INC. (1)
5,442,805 Location-based adaptive radio control 110 1992
 
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6,082,677 Satellite orbiting toward west in the equatorial plane and meteorological satellite system using the satellite 4 1998
 
NEC CORPORATION (1)
6,542,113 Global positioning system 4 2001
 
Nihon Musen Kabushiki Kaisha (1)
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NISSAN MOTOR CO., LTD. (1)
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NOKIA SIEMENS NETWORKS OY (1)
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6,445,344 Local area positioning system 10 2000
 
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6,366,604 Compensation for phase errors caused by clock jitter in a CDMA communication system 2 1998
 
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8,013,787 Control and features for satellite positioning system receivers 0 2004
 
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5,566,073 Pilot aid using a synthetic environment 72 1995
 
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6,636,740 Apparatus and methods for position computation based on broadcast initialization data 19 1998
 
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6,667,713 Self-monitoring satellite system 11 2001
 
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8,164,516 GPS-based positioning system for mobile GPS terminals 0 2008
 
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7,639,985 Use of SCH bursts for co-channel interference measurements 0 2006
 
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8,717,231 Position privacy in an electronic device 0 2010
 
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7,679,550 System and method for model-base compression of GPS ephemeris 4 2007
 
RAYTHEON COMPANY (1)
5,420,883 Train location and control using spread spectrum radio communications 100 1993
 
Societe Canadienne des Brevets et d'Exploitation Limitee (1)
4,933,916 Phase measurements using pseudo-random code 17 1985
 
TECHNISCHE UNIVERSITAT MUNCHEN (1)
7,852,263 Method for transmitting satellite data 0 2009
 
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7,154,438 Prioritized list of potential culled satellite ephemeris information for quick, accurate assisted locating satellite location determination 0 2005
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (1)
7,215,967 System and method for fast cold start of a GPS receiver in a telecommunications environment 38 1998
 
TELIT AUTOMOTIVE SOLUTIONS NV (1)
8,560,233 Method of determining a GPS position fix and a GPS receiver for the same 0 2004
 
The Boeing Company (1)
8,259,012 Software GNSS receiver for high-altitude spacecraft applications 0 2010
 
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The United States of America as represented by the Secretary of the Navy (1)
6,137,842 System and method for determining the time difference of arrival of a frequency shift keyed signal at two separate receivers 1 1997
 
TORSAL TECHNOLOGY GROUP LTD. LLC (1)
5,444,450 Radio telecommunications system and method with adaptive location determination convergence 85 1993
 
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4,754,283 Codeless GPS sonde 32 1986
 
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7,366,492 Method and system for mobile location detection using handoff information 14 2002
 
VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY (1)
6,608,669 Quadrature processed LIDAR system 27 2001
 
VOICE SIGNALS LLC (1)
5,382,958 Time transfer position location method and apparatus 36 1994
 
VOXSON PTY LTD (1)
7,853,252 Positioning systems utilizing mobile telephone system for correction signals 0 1997
 
Other [Check patent profile for assignment information] (13)
5,365,447 GPS and satelite navigation system 101 1991
5,343,209 Navigation receiver with coupled signal-tracking channels 198 1992
5,452,216 Microprocessor-based navigational aid system with external electronic correction 14 1993
5,627,546 Combined ground and satellite system for global aircraft surveillance guidance and navigation 95 1995
5,796,365 Method and apparatus for tracking a moving object 108 1996
5,786,849 Marine navigation I 11 1997
8,600,341 System and method for location based exchanges of data facilitating distributed locational applications 0 2008
8,639,267 System and method for location based exchanges of data facilitating distributed locational applications 0 2008
8,634,796 System and method for location based exchanges of data facilitating distributed location applications 0 2009
8,566,839 System and method for automated content presentation objects 0 2010
8,718,598 System and method for location based exchange vicinity interest specification 0 2013
8,761,804 System and method for location based exchanges of data facilitating distributed locational applications 0 2013
8,750,823 System and method for location based exchanges of data facilitating distributed locational applications 0 2013

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