US Patent No: 6,239,742

Number of patents in Portfolio can not be more than 2000

Method and apparatus for satellite positioning system based time measurement

4 Status Updates

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method and apparatus for measuring time related to satellite data messages which are used with satellite positioning systems (SPS). In one method, a first record of at least a portion of a satellite data message is received at an entity, which is typically a basestation. The first record is compared with a second record of the satellite data message, where the first record and the second record overlap at least partially in time. Then a time is determined from this comparison, and this time indicates when the first record (or the source from which the first record was obtained) was received at a remote entity which is typically a mobile SPS receiver. Various other methods of the invention are described and various apparatuses of the invention are also described. The methods and apparatuses measure time of day using SPS signals without reading the satellite data messages which are transmitted as data within these signals. The methods and apparatuses are suitable for situations in which the received signal level is too weak to allow reading of the satellite data messages.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
SNAPTRACK, INC.SAN JOSE, CA389

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Krasner, Norman F San Carlos, CA 87 12031

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SNAPTRACK, INC. (1)
* 5,812,087 Method and apparatus for satellite positioning system based time measurement 375 1997
 
MESC ELECTRONIC SYSTEMS, INC. (1)
* 4,734,701 Null processing receiver apparatus and method 31 1986
 
UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (1)
4,445,118 Navigation system and method 626 1981
 
Radix Technology, Inc. (1)
5,420,592 Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations 225 1993
 
Magnavox Electronic Systems Company (1)
5,317,322 Null processing and beam steering receiver apparatus and method 25 1993
 
Combustion Engineering, Inc. (1)
4,449,830 Method and apparatus for measuring elapsed time between an initiating event and a dependent event 19 1981
 
Navsys Corporation (2)
5,225,842 Vehicle tracking system employing global positioning system (GPS) satellites 459 1991
5,379,224 GPS tracking system 322 1991
 
HYSKY TECHNOLOGIES, INC. (1)
* 5,640,442 Technique for determining propagating and clear frequency to be used in wide area wireless data communications network 31 1996
 
RAYTHEON COMPANY (1)
* 5,117,232 Global system positioning receiver 43 1991
 
NORTHROP GRUMMAN SYSTEMS CORPORATION (1)
* 5,570,097 Retransmitted GPS interferometric system 22 1995
 
TRIMBLE NAVIGATION LIMITED (5)
* 5,319,374 Precise universal time for vehicles 148 1993
* 5,510,797 Provision of SPS timing signals 109 1993
5,521,887 Time transfer system 43 1993
* 5,625,556 Accurate time standard for vehicle operation 23 1995
* 5,841,026 Automatic transference between real-time operation and post-processing in a GPS survey system 34 1996
 
ALLEN TELECOM LLC (1)
5,317,323 Passive high accuracy geolocation system and method 266 1993
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
9,420,444 Enhanced E911 network access for call centers 0 2013
 
X ONE, INC. (10)
8,538,458 Location sharing and tracking using mobile phones or other wireless devices 61 2008
8,831,635 Methods and apparatuses for transmission of an alert to multiple devices 4 2011
8,750,898 Methods and systems for annotating target locations 1 2013
8,798,645 Methods and systems for sharing position data and tracing paths between mobile-device users 3 2013
8,798,593 Location sharing and tracking using mobile phones or other wireless devices 2 2013
8,798,647 Tracking proximity of services provider to services consumer 3 2013
9,167,558 Methods and systems for sharing position data between subscribers involving multiple wireless providers 0 2014
9,185,522 Apparatus and method to transmit content to a cellular wireless device based on proximity to other wireless devices 0 2014
9,031,581 Apparatus and method for obtaining content on a cellular wireless device based on proximity to other wireless devices 1 2014
9,253,616 Apparatus and method for obtaining content on a cellular wireless device based on proximity 1 2015
 
QUALCOMM INCORPORATED (7)
7,551,129 Virtual real-time clock based on time information from multiple communication systems 5 2006
* 2008/0018,530 VIRTUAL REAL-TIME CLOCK BASED ON TIME INFORMATION FROM MULTIPLE COMMUNICATION SYSTEMS 4 2006
7,911,381 Virtual real-time clock based on time information from multiple communication systems 1 2009
8,571,089 Time-setting in satellite positioning system receivers 0 2010
* 2012/0183,023 IMPLEMENTATIONS FOR WIRELESS SIGNAL PROCESSING 10 2011
8,395,969 Virtual real-time clock based on time information from multiple communication systems 0 2011
* 2011/0164,607 VIRTUAL REAL-TIME CLOCK BASED ON TIME INFORMATION FROM MULTIPLE COMMUNICATION SYSTEMS 3 2011
 
Sergei Podshivalov to Global Locate, Inc. (1)
* 2003/0219,066 Method and apparatus for performing signal correlation 3 2003
 
QUALCOMM TECHNOLOGIES INTERNATIONAL, LTD. (2)
7,616,064 Digital synthesizer for low power location receivers 0 2008
* 2009/0219,099 DIGITAL SYNTHESIZER FOR LOW POWER LOCATION RECEIVERS 1 2008
 
SNAPTRACK, INC. (1)
* 2004/0147,228 Method and apparatus for signal processing in a satellite positioning system 3 2004
 
TELECOMMUNICATION SYSTEMS, INC. (88)
8,126,889 Location fidelity adjustment based on mobile subscriber privacy profile 28 2002
7,426,380 Location derived presence information 61 2003
7,424,293 User plane location based service using message tunneling to support roaming 74 2003
8,660,573 Location service requests throttling 2 2005
7,825,780 Cellular augmented vehicle alarm notification together with location services for position of an alarming vehicle 12 2005
9,282,451 Automatic location identification (ALI) service requests steering, connection sharing and protocol translation 0 2005
8,150,363 Enhanced E911 network access for call centers 9 2006
9,154,906 Area watcher for wireless network 0 2006
7,471,236 Cellular augmented radar/laser detector 27 2006
7,899,450 Cellular augmented radar/laser detection using local mobile network within cellular network 8 2006
7,782,254 Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations 9 2006
7,907,551 Voice over internet protocol (VoIP) location based 911 conferencing 12 2006
7,626,951 Voice Over Internet Protocol (VoIP) location based conferencing 82 2006
8,467,320 Voice over internet protocol (VoIP) multi-user conferencing 2 2006
8,059,789 Automatic location identification (ALI) emergency services pseudo key (ESPK) 3 2006
8,918,073 Wireless telecommunications location based services scheme selection 0 2007
7,912,446 Solutions for voice over internet protocol (VoIP) 911 location services 8 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 11 2007
7,489,273 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 4 2007
8,027,697 Public safety access point (PSAP) selection for E911 wireless callers in a GSM type system 1 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) 6 2007
8,208,605 Extended efficient usage of emergency services keys 3 2007
8,032,112 Location derived presence information 4 2008
7,890,102 User plane location based service using message tunneling to support roaming 3 2008
8,185,087 Emergency 911 data messaging 5 2008
7,764,219 Cellular augmented radar/laser detector 20 2008
7,929,530 Ancillary data support in session initiation protocol (SIP) messaging 6 2008
8,068,587 Nationwide table routing of voice over internet protocol (VOIP) emergency calls 4 2009
8,867,485 Multiple location retrieval function (LRF) network having location continuity 0 2009
8,892,128 Location based geo-reminders 0 2009
8,525,681 Location based proximity alert 4 2009
8,089,401 Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas 3 2009
7,965,222 Cellular augmented radar/laser detector 11 2010
8,336,664 Telematics basic mobile device safety interlock 28 2010
8,515,414 Cellular augmented radar/laser detection using local mobile network within cellular network 5 2011
8,126,458 User plane location based service using message tunneling to support roaming 5 2011
8,385,881 Solutions for voice over internet protocol (VoIP) 911 location services 5 2011
9,130,963 Ancillary data support in session initiation protocol (SIP) messaging 0 2011
8,688,087 N-dimensional affinity confluencer 3 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 7 2011
8,532,277 Location derived presence information 0 2011
8,666,397 Area event handling when current network does not cover target area 0 2011
8,942,743 iALERT enhanced alert manager 1 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 1 2012
8,626,160 User plane location based service using message tunneling to support roaming 0 2012
8,688,174 Integrated, detachable ear bud device for a wireless phone 3 2012
8,874,068 Emergency 911 data messaging 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
8,885,796 Extended efficient usage of emergency services keys 0 2012
8,831,556 Unique global identifier header for minimizing prank emergency 911 calls 0 2012
9,220,958 Consequential location derived information 0 2012
9,204,294 Location privacy selector 0 2012
9,313,637 Wireless emergency caller profile data delivery over a legacy interface 0 2012
9,264,537 Special emergency call treatment based on the caller 0 2012
8,984,591 Authentication via motion of wireless device movement 0 2012
9,384,339 Authenticating cloud computing enabling secure services 0 2013
8,798,572 Solutions for voice over internet protocol (VoIP) 911 location services 0 2013
9,307,372 No responders online 0 2013
9,338,153 Secure distribution of non-privileged authentication credentials 0 2013
9,002,347 Transmitter augmented radar/laser detection using local mobile network within a wide area network 0 2013
9,313,638 Device independent caller data access for emergency calls 0 2013
9,208,346 Persona-notitia intellection codifier 0 2013
8,983,048 Location derived presence information 0 2013
9,301,191 Quality of service to over the top applications used with VPN 0 2013
8,965,360 User plane location based service using message tunneling to support roaming 0 2013
9,167,553 GeoNexus proximity detector network 0 2013
9,198,054 Aggregate location dynometer (ALD) 0 2014
9,125,039 Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging 0 2014
9,288,615 Location service requests throttling 0 2014
9,173,059 Mobile internet protocol (IP) location 0 2014
9,088,614 User plane location services over session initiation protocol (SIP) 0 2014
9,232,062 Mobile automatic location identification (ALI) for first responders 0 2014
8,983,047 Index of suspicion determination for communications request 1 2014
9,237,228 Solutions for voice over internet protocol (VoIP) 911 location services 0 2014
9,178,996 Unique global identifier header for minimizing prank 911 calls 0 2014
9,408,034 Extended area event for network based proximity discovery 0 2014
9,131,357 Emergency 911 data messaging 0 2014
9,210,548 iALERT enhanced alert manager 0 2014
9,271,138 User plane location based service using message tunneling to support roaming 0 2015
9,398,419 Location derived presence information 0 2015
9,326,143 Authentication via motion of wireless device movement 0 2015
9,197,992 User plane location services over session initiation protocol (SIP) 1 2015
9,401,986 Unique global identifier header for minimizing prank emergency 911 calls 0 2015
9,402,158 Aggregate location dynometer (ALD) 0 2015
 
YMax Communications Corp. (1)
8,433,283 Computer-related devices and techniques for facilitating an emergency call via a cellular or data network using remote communication device identifying information 1 2009
 
EDIZONE, LLC (1)
7,463,893 Method and apparatus for implementing a GPS receiver on a single integrated circuit 0 2001
 
SAMSUNG ELECTRONICS CO., LTD. (4)
* 2002/0183,076 Multi-mode global positioning system for use with wireless networks 11 2002
7,970,411 Aided location communication system 2 2004
7,970,412 Aided location communication system 3 2005
* 2006/0038,719 Aided location communication system 77 2005
 
Global Locate (1)
7,656,350 Method and apparatus for processing a satellite positioning system signal using a cellular acquisition signal 2 2004
 
XONE, INC. (2)
8,385,964 Methods and apparatuses for geospatial-based sharing of information by multiple devices 41 2011
8,712,441 Methods and systems for temporarily sharing position data between mobile-device users 10 2013
 
MOTOROLA SOLUTIONS, INC. (1)
* 6,374,179 Method and system for distributing position information 48 2000
 
UBE INDUSTRIES, LTD. (2)
6,307,052 Acid-addition salts of optically active piperidine compound and process for producing the same 6 1999
6,780,877 Acid addition salt of optically active piperidine compound and process for preparing the same 3 2001
 
CSR LIMITED (1)
* 6,480,150 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver 12 2001
 
SIRF TECHNOLOGY HOLDINGS, INC. (3)
7,616,705 Monolithic GPS RF front end integrated circuit 1 2001
7,577,448 Multi-mode global positioning system for use with wireless networks 52 2002
7,719,466 Communications systems that reduces auto-correlation or cross-correlation in weak signals 0 2007
 
TELENAV, INC. (1)
* 8,370,063 Navigation system having filtering mechanism and method of operation thereof 0 2008
 
BROADCOM CORPORATION (29)
6,704,348 Method and apparatus for computing signal correlation at multiple resolutions 20 2001
* 2002/0172,267 Method and apparatus for computing signal correlation at multiple resolutions 4 2001
6,819,707 Method and apparatus for performing signal correlation using historical correlation data 9 2001
7,053,824 Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal 29 2001
6,891,880 Method and apparatus for performing signal correlation 10 2002
* 2002/0175,857 Method and apparatus for performing signal correlation 3 2002
7,190,712 Method and apparatus for performing signal correlation 10 2003
7,184,464 Apparatus for computing signal correlation at multiple resolutions 4 2003
7,567,636 Method and apparatus for performing signal correlation using historical correlation data 7 2003
* 2009/0315,768 METHOD AND APPARATUS FOR PROCESSING A SATELLITE POSITIONING SYSTEM SIGNAL USING A CELLULAR ACQUISITION SIGNAL 3 2004
7,995,682 Method and apparatus for performing signal processing using historical correlation data 1 2005
* 2006/0209,935 Method and apparatus for performing signal processing using historical correlation data 0 2005
7,884,762 Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal 3 2005
* 2006/0244,658 Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal 6 2005
7,672,358 Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference 2 2006
7,443,340 Method and apparatus for generating and distributing satellite tracking information 7 2006
7,548,816 Method and apparatus for generating and securely distributing long-term satellite tracking information 13 2006
* 2007/0200,752 METHOD AND APPARATUS FOR MAINTAINING INTEGRITY OF LONG-TERM ORBITS IN A REMOTE RECEIVER 25 2006
8,170,086 Method and apparatus for performing signal correlation 4 2007
9,274,225 Method and apparatus for generating and distributing satellite tracking information 0 2008
8,358,245 Method and system for extending the usability period of long term orbit (LTO) 2 2008
* 2010/0134,353 METHOD AND SYSTEM FOR EXTENDING THE USABILITY PERIOD OF LONG TERM ORBIT (LTO) 3 2008
* 2010/0225,537 METHOD AND APPARATUS FOR PROCESSING A SATELLITE POSITIONING SYSTEM SIGNAL USING A CELLULAR ACQUISITION SIGNAL 14 2009
8,411,726 Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference 1 2009
8,472,503 Method and apparatus for performing frequency synchronization 1 2010
* 2010/0272,161 METHOD AND APPARATUS FOR PERFORMING FREQUENCY SYNCHRONIZATION 0 2010
* 2011/0133,985 METHOD AND APPARATUS FOR MAINTAINING INTEGRITY OF LONG-TERM ORBITS IN A REMOTE RECEIVER 2 2010
8,963,773 Method and apparatus for maintaining integrity of long-term orbits in a remote receiver 0 2013
8,989,236 Method and apparatus for performing frequency synchronization 0 2013
 
ATC TECHNOLOGIES, LLC (2)
RE43137 Filters for combined radiotelephone/GPS terminals 2 2006
RE45107 Filters for combined radiotelephone/GPS terminals 0 2010
 
CSR TECHNOLOGY INC. (57)
* 6,671,620 Method and apparatus for determining global position using almanac information 136 2000
7,711,038 System and method for despreading in a spread spectrum matched filter 0 2000
7,545,850 Analog compression of GPS C/A signal to audio bandwidth 0 2001
7,436,907 Analog compression of GPS C/A signal to audio bandwidth 1 2001
7,671,489 Method and apparatus for selectively maintaining circuit power when higher voltages are present 3 2002
7,813,875 Layered host based satellite positioning solutions 3 2002
7,546,395 Navagation processing between a tracker hardware device and a computer host based on a satellite positioning solution system 4 2002
* 2005/0234,713 Navagation processing in host based satellite positioning solution 1 2002
* 2005/0234,982 Layered host based satellite positioning solutions 2 2002
7,545,319 Configurable satellite positioning system receivers with programmable inputs 2 2003
7,639,180 Dynamic memory allocation and sharing in electronic systems 1 2004
7,852,905 System and method for despreading in a spread spectrum matched filter 0 2004
7,369,830 Monolithic GPS RF front end integrated circuit 1 2004
* 2005/0096,004 Monolithic GPS RF front end integrated circuit 5 2004
8,244,271 Distributed data collection of satellite data 1 2004
* 2005/0130,590 Distributed data collection of satellite data 10 2004
7,929,928 Frequency phase correction system 3 2004
* 2005/0162,306 Frequency phase correction system 17 2004
7,751,974 Navigation processing for a satellite positioning system receiver 2 2005
* 2005/0267,682 Navigation processing for a satellite positioning system receiver 1 2005
8,078,189 System and method for providing location based services over a network 18 2005
* 2005/0227,709 System and method for providing location based services over a network 62 2005
7,365,680 Location services system that reduces auto-correlation or cross-correlation in weak signals 3 2006
8,321,636 Memory reallocation and sharing in electronic systems 0 2006
* 2007/0008,218 Tracker architecture for GPS systems 1 2006
7,724,807 Method for reducing auto-correlation or cross-correlation in weak signals 1 2006
7,508,340 Generic Satellite Positioning System receivers with selectable inputs and outputs 1 2006
8,121,238 System and method for synchronizing digital bits in a data stream 3 2006
* 2008/0002,797 System and Method for Synchronizing Digital Bits in a Data Stream 12 2006
7,466,209 System and method for providing temperature correction in a crystal oscillator 8 2007
* 2008/0164,952 System and Method for Providing Temperature Correction in a Crystal Oscillator 7 2007
7,999,733 Fast reacquisition of a GPS signal 0 2007
* 2008/0198,069 Fast Reacquisition of a GPS Signal 8 2007
* 2008/0001,817 Communications Systems That Reduces Auto-Correlation or Cross-Correlation In Weak Signals 1 2007
7,724,612 System and method for providing aiding information to a satellite positioning system receiver over short-range wireless connections 20 2007
* 2008/0258,965 System and Method for Providing Aiding Information to a Satellite Positioning System Receiver Over Short-Range Wireless Connections 3 2007
7,724,186 Enhanced aiding in GPS systems 0 2007
* 2008/0122,690 Enhanced Aiding in GPS Systems 2 2007
8,116,976 Satellite based positioning method and system for coarse location positioning 1 2007
7,995,683 Noise floor independent delay-locked loop discriminator 1 2007
* 2009/0110,134 Noise Floor Independent Delay-Locked Loop Discriminator 3 2007
7,642,957 GPS system utilizing multiple antennas 10 2007
* 2009/0135,060 GPS System Utilizing Multiple Antennas 1 2007
7,969,351 Mode determination for mobile GPS terminals 0 2007
* 2008/0180,316 Mode Determination for Mobile GPS Terminals 1 2007
8,144,053 System and method for verifying consistent measurements in performing GPS positioning 0 2008
* 2009/0195,446 System and Method for Verifying Consistent Measurements in Performing GPS Positioning 9 2008
8,699,984 Adaptive noise figure control in a radio receiver 0 2008
8,478,305 System and method for integrating location information into an internet phone system 0 2008
* 2009/0258,655 System and method for integrating location information into an internet phone system 0 2008
8,072,376 Method and apparatus for mitigating the effects of cross correlation in a GPS receiver 1 2008
8,073,414 Auto-tuning system for an on-chip RF filter 2 2008
* 2009/0325,521 Auto-Tuning System for an On-Chip RF Filter 14 2008
8,260,548 Satellite based positioning method and system for coarse location positioning 0 2010
8,351,885 Auto-tuning system for an On-Chip RF filter 2 2011
8,891,714 System and method for synchronizing digital bits in a data stream 0 2012
8,762,054 Interface for a GPS system 0 2012
 
STEVEN M. HOFFBERG 2004-1 GRAT (2)
8,369,967 Alarm system controller and a method for controlling an alarm system 13 2011
8,892,495 Adaptive pattern recognition based controller apparatus and method and human-interface therefore 0 2013
* Cited By Examiner