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| Number | Title | Issue Date |
| 8150651 | Acceleration compensated inclinometer An inclinometer using a speedometer and a forward-looking accelerometer for measuring inclination angle. ... | 04/03/2012 |
| 7681192 | Location-centric project data delivery system for construction A project data delivery apparatus for automatically delivering project data files to a construction machine based on the geographical location and identification of the construction machine. The apparatus includes a project data distributor for storing, maintaining ... | 03/16/2010 |
| 7514970 | Decimal frequency synthesizer A frequency synthesizer and method for synthesizing decimal frequencies. The synthesizer includes a seed generator, a clock synthesizer and an output synthesizer. The clock synthesizer includes a binary accumulator in a feedback signal path using a base reference fr... | 04/07/2009 |
| 7383114 | Method and apparatus for steering a farm implement to a path An apparatus and method using GPS for dynamically adjusting side-to-side positioning of a farm implement along a geographical path. The apparatus includes a global positioning system (GPS) antenna disposed on the farm implement, a GPS receiver coupled to the GPS ant... | 06/03/2008 |
| 7379015 | First responder positioning apparatus A positioning system for tracking the location of a first responder emergency worker. The system includes mobile enabler units and a personnel badge having a ranging transponder. Two enabler units can use two-way ranging signals, a prescribed turn around time and di... | 05/27/2008 |
| 7365681 | GPS receiver having a prescribed time-of-entry into an operation mode A GPS receiver having a fast method for determining GPS clock time. The GPS receiver includes a signal processor for receiving GPS signals from GPS satellites and detecting current GPS data bits carried by the respective GPS signals, a chapter memory for storing a b... | 04/29/2008 |
| 7348921 | GPS receiver using stored navigation data bits for a fast determination of GPS clock time A GPS receiver having a fast method for determining GPS clock time. The GPS receiver includes a signal processor for receiving GPS signals from GPS satellites and detecting current GPS data bits carried by the respective GPS signals, a chapter memory for storing a b... | 03/25/2008 |
| 7336225 | Synthetic phase processor for controlling accuracy of high integrity GPS positions A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established ref... | 02/26/2008 |
| 7295911 | Construction machine having location-based project data files A construction machine for automatically receiving selected project data files based on the geographical location and identification of the machine. The machine includes an auto-start transceiver for transmitting the local location and identification of the machine ... | 11/13/2007 |
| 7295156 | Cellphone GPS positioning system A mobile GPS location system. The location system includes a mobile radio transceiver for transmitting a radio positioning signal and receiving a responsive radio system signal having a radio positioning system (RPS)-based time and position derived from the radio po... | 11/13/2007 |
| 7292183 | GPS reference system providing synthetic reference phases for controlling accuracy of high integrity positions A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established ref... | 11/06/2007 |
| 7283091 | Radio positioning system for providing position and time for assisting GPS signal acquisition in mobile unit A mobile location system. The GPS location system includes a radio positioning system (RPS) for determining times-of-arrival at several locations for a radio positioning signal transmitted from a mobile unit and then using the times-of-arrival for determining an RPS... | 10/16/2007 |
| 7280767 | Half rate precoded data RZ transmitter An optical duobinary transmitter. The transmitter uses a half-rate precoder, half-rate non-linear modulation drive circuits and a multiplex modulator for generating duobinary modulation on an optical signal from which full-rate data can be detected without decoding.... | 10/09/2007 |
| 7266144 | Data bit transition determination method and apparatus for spread spectrum signals Apparatus and methods for determining the timing of the data bit transitions. “N” assumptions of data bit transitions are used for determining N integrations of an incoming spread signal for data bit time periods where N is the data bit time period divided by th... | 09/04/2007 |
| 7245999 | Construction machine having location based auto-start A construction machine for automatically receiving selected project data files based on the geographical location and identification of the machine. The machine includes an auto-start transceiver for transmitting the local location and identification of the machine ... | 07/17/2007 |
| 7230568 | GPS receiver having a phase lock loop hold off A global navigation satellite system (GNSS) receiver using phase lock loops for strong GNSS signals and automatic frequency control (AFC) loops for weak GNSS signals on a satellite-by-satellite basis. The phase lock loops or the AFC loops associated with particular ... | 06/12/2007 |
| 7227496 | GPS rover station having position dithering for controlling accuracy of secure positions A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established ref... | 06/05/2007 |
| 7215167 | Low noise microwave frequency synthesizer having fast switching A frequency synthesizer and a method using a first seed word and a variable clock rate derived from a second seed word for synthesizing a signal frequency. An accumulator accumulates the first seed word at the variable clock rate with a remainder word for updating a... | 05/08/2007 |
| 7208990 | Low noise microwave frequency synthesizer having loop accumulation A frequency synthesizer and a method for synthesizing a microwave output signal frequency. The synthesizer uses a reference signal having a variable frequency and accumulation in feedback of a phase locked loop for synthesizing a microwave output frequency. The feed... | 04/24/2007 |
| 7202813 | GPS reference system providing a synthetic offset vector for dithering a rover station position A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established ref... | 04/10/2007 |
| 7173943 | Protocol analyzer and time precise method for capturing multi-directional packet traffic An apparatus and method for selecting and recording multi-directional communication packet traffic in a compact manner in realtime while maintaining relative time between the selected packets passing in one direction and the selected packets passing in another direc... | 02/06/2007 |
| 7162163 | Differential complex modulation optical receiver having compensation of Kerr effect phase noise A method and apparatus for reducing nonlinear phase noise that is induced in an optical transmission system by the interaction of optical amplifier noise and Kerr effect. The apparatus includes an intensity-scaled nonlinear phase noise compensator. The phase noise c... | 01/09/2007 |
| 7158885 | Remote subscription unit for GPS information A GPS information service system for providing supplemental GPS correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS aiding information encrypted with subscription keys. A remote GPS subscription unit receives the key... | 01/02/2007 |
| 7089113 | Subscription system for GPS information A GPS information service system for providing supplemental GPS location correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS information encrypted with subscription keys. Remote GPS subscription unit receive the key ... | 08/08/2006 |
| 7079075 | GPS rover station for synthesizing synthetic reference phases for controlling accuracy of high integrity positions A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established ref... | 07/18/2006 |
| 7061972 | GPS receiver having dynamic correlator allocation between a memory-enhanced channel for acquisition and standard channels for tracking A GPS receiver having channel clusters each having a memory-enhanced channel and several standard tracking channels. The memory-enhanced channel includes a signal memory for accumulating carrier frequency leveled signal samples over several epochs into supersamples ... | 06/13/2006 |
| 7054731 | Farm implement guidance method and apparatus An apparatus and method using GPS for dynamically adjusting side-to-side positioning of a farm implement along a geographical path. The apparatus includes a global positioning system (GPS) antenna disposed on the farm implement, a GPS receiver coupled to the GPS ant... | 05/30/2006 |
| 7020555 | Subscription GPS information service system A GPS information service system for providing supplemental GPS correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS aiding information encrypted with subscription keys. A remote GPS subscription unit receives the key... | 03/28/2006 |
| 7013089 | Optical receiver having compensation for Kerr effect phase noise A method and apparatus for reducing nonlinear phase noise that is induced in an optical transmission system by the interaction of optical amplifier noise and Kerr effect. The apparatus includes an intensity-scaled nonlinear phase noise compensator. The phase noise c... | 03/14/2006 |
| 7007527 | Electrified cylindrical lock An electrified cylindrical lock having a reversible solenoid that can be easily changed over between active push and active pull. The solenoid includes a coil and an armature that may be assembled for an active push or an active pull of a latch member. The coil has ... | 03/07/2006 |
| 7003993 | Electrified cylindrical lock An electrified cylindrical lock having a reversible solenoid that can be easily changed over between fail safe and fail secure. The solenoid includes a coil and an armature that may be assembled for an active push or an active pull of a latch member. The latch membe... | 02/28/2006 |
| 6990140 | Signal receiver using coherent integration in interleaved time periods for signal acquisition at low signal strength A GPS receiver and method using alternating “A” and “B” integration time segments. The polarities of certain GPS data bits are known beforehand and their expected reception times are known. The GPS signal in 10 millisecond “A” time segments and “B” t... | 01/24/2006 |
| 6970500 | Method for determining data bit transitions for a low level spread spectrum signal Apparatus and methods for determining the timing of the data bit transitions. “N” assumptions of data bit transitions are used for determining N integrations of an incoming spread signal for data bit time periods where N is the data bit time period divided by th... | 11/29/2005 |
| 6879913 | Indoor GPS clock An indoor GPS clock using GPS signals lower that −143 dBm for issuing disciplined frequency and time standard signals. The indoor GPS clock includes a correlation machine using long integration periods for enabling the indoor GPS clock to operate with low signal l... | 04/12/2005 |
| 6727848 | Global positioning system using almanac data for a fast time to first fix A system using coarse GPS orbital parameters for providing a precise GPS location. The system includes a GPS reference receiver and a GPS user receiver. Coarse locations-in-space of GPS satellites are computed from almanac or old ephemeris data. In a first embodimen... | 04/27/2004 |
| 6725157 | Indoor GPS clock An indoor GPS clock using GPS signals lower that −143 dBm for issuing disciplined frequency and time standard signals. The indoor GPS clock includes a correlation machine using long integration periods for enabling the indoor GPS clock to operate with low signal l... | 04/20/2004 |
| 6696797 | Electronic ballast having valley frequency modulation for a gas discharge lamp An electronic ballasts for a gas discharge lamp. The ballast includes a variable frequency power generator, a tuned driver network, and a valley correction modulation system. The driver network has a first resonant frequency when the lamp is off and a sec... | 02/24/2004 |
| 6674849 | Telephone providing directions to a location A system providing a map and driving directions to a user of a user telephone for a remote location associated with a remote telephone number. The system includes the user telephone and a server connected through a telephone system. The user telephone inc... | 01/06/2004 |
| 6169761 | Method and transceiver using an improved protocol for a frequency hop communication system A frequency hopping transceiver having a protocol for selecting a clear channel for exchanging QAM payload data signals. An energy level in a current channel is sounded by to determine whether it is clear or busy. When the current channel is clear an outg... | 01/02/2001 |
