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| Number | Title | Issue Date |
| 8160577 | Method and apparatus for providing intelligent deactivation of electronic devices in aircraft A method and apparatus for automatically deactivating an electronic device during flight of an aircraft. The method utilizes a global positioning system (GPS) or assisted global positioning system (AGPS) circuit to facilitate computing the acceleration, velocity and... | 04/17/2012 |
| 7701389 | Method and apparatus for determining absolute time-of-day in a mobile-assisted satellite positioning system A method and apparatus for determining time-of-day in a mobile receiver is described. In one example, expected pseudoranges to a plurality of satellites are obtained. The expected pseudoranges are based on an initial position of the mobile receiver and an initial ti... | 04/20/2010 |
| 7693660 | Computing long term orbit and clock models with variable time-horizons A method and apparatus for determining long term orbit (LTO) models using variable time-horizons to improve the orbit and clock model accuracy. The method and apparatus use either historic ephemeris or historic measurements for at least one satellite to produce an o... | 04/06/2010 |
| 7688260 | Method and apparatus for locating position of a mobile device in an assisted satellite positioning system Method and apparatus for locating position of a mobile device in an assisted satellite positioning system is described. In one example, satellite measurement data is obtained from a plurality of satellites at a mobile device. Position of the mobile device is compute... | 03/30/2010 |
| 7642959 | Method and apparatus for processing satellite signals at a satellite positioning system receiver Method and apparatus for processing satellite signals in an SPS receiver is described. In one example, the satellite signals are correlated against pseudorandom reference codes to produce correlation results. A determination is made whether the SPS receiver is in a ... | 01/05/2010 |
| 7626539 | Method and apparatus for managing time in a satellite positioning system A method, apparatus and system for time management in a position-location system is described. The method may include (i) obtaining, at a global-navigation-satellite-system receiver while being served by a first node of a wireless network a first time base, a relati... | 12/01/2009 |
| 7595752 | Method and apparatus for enhanced autonomous GPS Method and apparatus for locating position of a remote receiver is described. In one example, long term satellite tracking data is obtained at a remote receiver. Satellite positioning system (SPS) satellites are detected. Pseudoranges are determined from the remote ... | 09/29/2009 |
| 7592950 | Method and apparatus for combining measurements and determining clock offsets between different satellite positioning systems Method and apparatus for processing satellite signals from a first satellite navigation system and a second satellite navigation system is described. In one example, at least one first pseudorange between a satellite signal receiver and at least one satellite of the... | 09/22/2009 |
| 7589667 | Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver A method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver is described. In one example, a first set of satellite tracking data is received at a server. Integrity data for a second set of satellite tracking data is gener... | 09/15/2009 |
| 7567636 | Method and apparatus for performing signal correlation using historical correlation data A method and apparatus for estimating a satellite signal parameter in a satellite positioning system receiver is described. In an example, a plurality of correlation results between a satellite signal and a reference signal is generated in response to a command from... | 07/28/2009 |
| 7548816 | Method and apparatus for generating and securely distributing long-term satellite tracking information A method and apparatus for generating and distributing satellite tracking data to a remote receiver is disclosed. The method for includes extracting from memory at least a portion of long-term-satellite-tracking data, generating formatted data from the at least a po... | 06/16/2009 |
| 7522098 | Method and apparatus for validating a position in a satellite positioning system using range-rate measurements Method and apparatus for validating an initial position in a satellite positioning system using range-rate measurements is described. In one example, range-rate measurements are obtained at the remote receiver with respect to a plurality of satellites. Expected rang... | 04/21/2009 |
| 7443340 | Method and apparatus for generating and distributing satellite tracking information A method and apparatus for generating and distributing satellite tracking data to a remote receiver is disclosed. The method for includes extracting from satellite-tracking data initial model parameters representing a current orbit of at least one satellite-position... | 10/28/2008 |
| 7342533 | Method and apparatus for obtaining satellite trajectory data at a satellite positioning system receiver Method and apparatus for locating position of a mobile receiver is described. In one embodiment, satellite measurements are obtained at the mobile receiver for a plurality of satellites in a satellite positioning system constellation. Satellite trajectory data is ob... | 03/11/2008 |
| 7327310 | Method and apparatus for managing time in a satellite positioning system Method and apparatus for time management in a position location system is described. In one example, a time relation is received at a server. The time relation includes a relationship between an air-interface time of a base station and a satellite time for a satelli... | 02/05/2008 |
| 7256732 | Method and apparatus for location-based triggering in an assisted satellite positioning system Method and apparatus for location-based triggering in a mobile receiver is described. In one example, a triggering region is designated. Expected pseudorange data is generated within the mobile receiver and pseudoranges to a plurality of satellites are measured. A d... | 08/14/2007 |
| 7254404 | Method and apparatus for processing position information in a mobile device Method and apparatus for processing position information in a mobile device is described. In one example, a request for a position to be computed within a predefined period of time is received. A plurality of positions is calculated within the predefined period of t... | 08/07/2007 |
| 7253768 | Method and apparatus for mitigating multipath effects at a satellite signal receiver using a sequential estimation filter A method and apparatus for mitigating multipath effects in a satellite signal receiver is described. The method includes computing at least one pseudorange residual as a function of (i) a measured pseudorange to a given satellite, and (ii) an expected pseudorange to... | 08/07/2007 |
| 7245253 | Method and apparatus for processing of satellite signals without time of day information Method and apparatus for locating position of a satellite signal receiver is described. In one example, pseudoranges are obtained that estimate the range of a satellite signal receiver to a plurality of satellites. An absolute time and a position are computed using ... | 07/17/2007 |
| 7239857 | Method and apparatus for compensating an oscillator in a location-enabled wireless device A method and apparatus for compensating an oscillator in a location-enabled wireless device is described. In an example, a mobile device includes a wireless receiver for receiving wireless signals and a GPS receiver for receiving GPS signals. The mobile device also ... | 07/03/2007 |
| 7196660 | Method and system for determining time in a satellite positioning system Method and apparatus for receiving an estimate of time in a satellite signal receiver receives an estimate of time from a server and compensates for error of a clock in the satellite signal receiver using the estimate of time. The output of the compensated clock is ... | 03/27/2007 |
| 7190712 | Method and apparatus for performing signal correlation A method and apparatus for performing signal correlation is described. In one example, portions of a pseudorandom reference code are multiplied with portions of a repeating code of the digital signal to produce a plurality of inner products. The plurality of inner p... | 03/13/2007 |
| 7158883 | Method and apparatus for locating position of a GPS device A method and apparatus for locating position of a GPS device is described. In one example, a wireless carrier is provided in communication with the GPS device. The wireless carrier is configured to provide an approximate position of the GPS device. A server is provi... | 01/02/2007 |
| 7158882 | Method and apparatus for locating position of a mobile receiver A method and apparatus for locating position of a mobile receiver is described. In one example, sets of satellite measurements are determined with respect to a plurality of satellites over a period of time. A determination is made as to whether the mobile receiver i... | 01/02/2007 |
| 7158080 | Method and apparatus for using long term satellite tracking data in a remote receiver Method and apparatus for using long term satellite tracking data in a remote receiver is described. In one example, long term satellite tracking data is received at a remote receiver from a server. The long term satellite tracking data is used to compute acquisition... | 01/02/2007 |
| 7155183 | Method and apparatus for adjusting reference oscillator frequency in a mobile wireless device A method and apparatus for using a conventional oscillator in a cellular telephone transceiver as a source of a reference signal for a GPS receiver. In one embodiment, the method comprises using a voltage-controlled oscillator (“VCXO”) within a cellular telephon... | 12/26/2006 |
| 7133772 | Method and apparatus for navigation using instantaneous Doppler measurements from satellites A method and apparatus for locating position of a satellite signal receiver is described. In one example, a Doppler offset for each of a plurality of satellite signals relative to the satellite signal receiver is determined at a first time. A position of the satelli... | 11/07/2006 |
| 7095370 | Method and apparatus for mitigating multipath effects at a satellite signal receiver using a sequential estimation filter A method and apparatus for mitigating multipath effects in a satellite signal receiver is described. In one example, measured pseudoranges are obtained from the satellite signal receiver to a plurality of satellites. For each measured pseudorange: an expected pseudo... | 08/22/2006 |
| 7095368 | Method and apparatus for combining measurements and determining clock offsets between different satellite positioning systems Method and apparatus for processing satellite signals from a first satellite navigation system and a second satellite navigation system is described. In one example, at least one first pseudorange between a satellite signal receiver and at least one satellite of the... | 08/22/2006 |
| 7053824 | Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal Method and apparatus for a GPS device that uses at least one cellular acquisition signal is described. More particularly, a GPS device is configured to receive at least one cellular acquisition signal for obtaining benefits associated with AGPS with only a small sub... | 05/30/2006 |
| 7012564 | Method and apparatus for adjusting a measurement cycle in a satellite positioning system signal receiver Method and apparatus for adjusting a measurement cycle in a satellite signal receiver is described. In one example, a notification is received at the satellite signal receiver that is indicative of at least one of a route-critical event and a motion-change event. A ... | 03/14/2006 |
| 7010307 | Method and apparatus for compensating an oscillator in a location-enabled wireless device A method and apparatus for compensating an oscillator in a location-enabled wireless device is described. In an example, a mobile device includes a wireless receiver for receiving wireless signals and a GPS receiver for receiving GPS signals. The mobile device also ... | 03/07/2006 |
| 7006556 | Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference A method and apparatus for mitigating multipath interference in a digital signal correlator forms values representative of magnitude or power of a correlation response between a digital signal and a pseudorandom reference code. The earliest peak in the correlation r... | 02/28/2006 |
| D514460 | Assisted global positioning system apparatus | 02/07/2006 |
| 6992617 | Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver A method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver is described. In one example, a first set of satellite tracking data is received at a server. Integrity data for a second set of satellite tracking data is gener... | 01/31/2006 |
| 6975266 | Method and apparatus for locating position of a satellite signal receiver A method and apparatus for locating position of a satellite signal receiver is described in one example, groups of pseudoranges from the satellite signal receiver to a plurality of satellites are determined at a respective plurality of times. The group of pseudorang... | 12/13/2005 |
| 6958726 | Method and apparatus for adjusting acquisition assistance data received by a mobile receiver from a server Method and apparatus for adjusting acquisition assistance data received by a mobile receiver from a server is described. In one example, pseudoranges are measured from the mobile receiver to a set of satellites. Line-of-sight data is obtained with respect to the mob... | 10/25/2005 |
| 6937187 | Method and apparatus for forming a dynamic model to locate position of a satellite receiver Method and apparatus for locating position of a satellite signal receiver is described. In one example, pseudoranges are obtained that estimate the range of a satellite signal receiver to a plurality of satellites. An absolute time and a position are computed using ... | 08/30/2005 |
| 6891880 | Method and apparatus for performing signal correlation A method and apparatus for computing a convolution between an input GPS signal and a C/A code reference by generating the convolution result in real time without storing unprocessed signal samples. The apparatus comprises a vector multiplier running at high speed to... | 05/10/2005 |
| 6853916 | Method and apparatus for forming a pseudo-range model A method and apparatus for locating mobile device over a broad coverage area using a wireless communications link that may have large and unknown latency. The apparatus comprises at least one mobile device, a reference network, a position server, a wireless carrier,... | 02/08/2005 |
