Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 6577271 | Signal detector employing coherent integration A signal detector is provided in which complex samples of a received signal are multiplied by data representative of a hypothesis, and the resulting product data is coherently integrated over a desired duration to provide correlation data representative o... | 06/10/2003 |
| 6567040 | Offset pointing in de-yawed phased-array spacecraft antenna A method and system are provided for electronically steering a phased array antenna mounted on a spacecraft to reduce or eliminate pointing error by modifying the phased array steering commands in a way that compensates for the offset, even on yaw steered... | 05/20/2003 |
| 6556167 | Direct acquisition of very large PN sequences in GPS systems A receiver and method for acquiring a large pseudorandom (PN) sequence such as a GPS P(Y) code signal with poor or no knowledge of an external time reference are disclosed. A reference PN sequence is sectioned into a predetermined number of subsequences. ... | 04/29/2003 |
| 6353411 | Antenna with special lobe pattern for use with global positioning systems A two-dimensional array of patch antennas positioned on a plate of dielectric material and so phased and weighted that they provide a three dimensional melon-shaped pattern having high attenuation from the plane of the array to a desired angle above the p... | 03/05/2002 |
| 6252544 | Mobile communication device A mobile communications device comprising a location sensing system, producing a location output; a memory, storing a set of locations and associated events; a telecommunications device, communicating event and location information between a remote system... | 06/26/2001 |
| 6249247 | Beam antenna direction measuring method, direction measuring device and antenna direction controller In order to control the direction of a beam antenna, at least one magnetic sensor is attached to the antenna for measuring at least one of the horizontal and vertical components of the geomagnetic field. A magnetic sensor circuit converts the output of th... | 06/19/2001 |
| 6249252 | Wireless location using multiple location estimators A location system is disclosed for commercial wireless telecommunication infrastructures. The system is an end-to-end solution having one or more location centers for outputting requested locations of commercially available handsets or mobile stations (MS... | 06/19/2001 |
| 6236358 | Mobile object locator There is disclosed a method and apparatus for an object locator system (10) for requesting and obtaining information about the location of a mobile object, having attached thereon a lightweight object locator (42), operable in a region served by a two-way... | 05/22/2001 |
| 6236365 | Location of a mobile station using a plurality of commercial wireless infrastructures A location system for commercial wireless telecommunication infrastructures (CMRRs). The system is an end-to-end solution having one or more location systems (42) for outputting requested locations of commercially available hand sets or mobile stations (n... | 05/22/2001 |
| 6232921 | Method and system for adaptive signal processing for an antenna array A method and system for adaptive signal processing for an antenna array reduces the requisite computations for executing an adaptive algorithm that combines or digitally filters baseband receive signals. The system receives uplink electromagnetic signals ... | 05/15/2001 |
| 6232922 | Passive three dimensional track of non-cooperative targets through opportunistic use of global positioning system (GPS) and GLONASS signals A method and apparatus for utilization of GPS, GLONASS or other existing RF signals is disclosed. These existing RF signals are scattered by targets, with a receiver of these scattered signals providing processing to extract three dimensional track of the... | 05/15/2001 |
| 6229480 | System and method for aligning an antenna A system and method for aligning an antenna. Signals broadcasted over a number of channels for each of a plurality of orientations of the antenna may be received. From such received signals, information pertaining to at least one of (i) an error rate, (ii... | 05/08/2001 |
| 6229482 | Method and apparatus for interference mitigation for phased-array beam pointing A method and apparatus for determining interference from a beam generated by a satellite includes the steps of determining a desired beam having a desired center location, a desired shape, a beam angle, and a predetermined frequency bandwidth comprising a... | 05/08/2001 |
| 6225948 | Method for direction estimation Signals in the form of wave elements of one or more subscriber signals are received at a receiving device assigned a number Ka of receiving sensors and the direction of the signals is estimated. Ka received signals are received via the receiving sensors a... | 05/01/2001 |
| 6225944 | Manual reporting of location data in a mobile communications network The invention is, in one embodiment, a method of reporting the location of a mobile phone by locating a Global Positioning System (GPS) receiver in a mobile communications network. The method first determines the location of the GPS receiver, processes da... | 05/01/2001 |
| 6222482 | Hand-held device providing a closest feature location in a three-dimensional geometry database A hand-held device has access to a three-dimensional geometry database and a GPS receiver, and provides information on the one or more closest features to the device location in the three-dimensional geometry database. The system has data input devices, o... | 04/24/2001 |
| 6218988 | Array antenna transmitter with a high transmission gain proportional to the number of antenna elements An array antenna is composed of an antenna section, adaptive transmission sections 3-1 to 3-M, and a transmission antenna weight-producing section 4. The antenna section has antenna elements 2-11 to 2-MN arrange... | 04/17/2001 |
| 6215442 | Method and apparatus for determining time in a satellite positioning system A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational information. Such navigational information may include, for... | 04/10/2001 |
| 6211822 | Spaceborne global positioning system for spacecraft The spaceborne Global Positioning System receiver provides navigational solutions and is designed for use in low Earth orbit. The spaceborne GPS receiver can determine the orbital position of a spacecraft using any of the satellites within the GPS constel... | 04/03/2001 |
| 6208291 | Highly parallel GPS correlator system and method A method and apparatus of acquiring and tracking satellite positioning system signals in a highly parallel correlator disclosed. A pseudo-random noise correlation operation is performed on an input satellite positioning system signal to provide a correlat... | 03/27/2001 |
| 6208289 | System and method for monitoring and reporting GPS pseudo range correction data A differential GPS receiver system in which a first receiver at a known location generates pseudo range correction data and a second GPS receiver at a nearby second known location uses the data to determine an enhanced calculated position of the second GP... | 03/27/2001 |
| 6204807 | Portable GPS positioning apparatus A portable GPS receiver receives a signal from a GPS satellite by a GPS receiving means to measure a position and a speed of the own receiver. A traveling pitch detector detects a traveling pitch of a human body. A timer determines an operating period to ... | 03/20/2001 |
| 6204809 | Radio wave receiving apparatus having an improved antenna resolution A radio wave receiving apparatus including a signal processing circuit which performs on Fourier transform with respect to an azimuth of an electric field signal outputted from an antenna receiving circuit. The Fourier transform is also performed with res... | 03/20/2001 |
| 6195037 | Method and apparatus for increased system capacity using antenna beamforming In a satellite communications system (100), system capacity is improved using a satellite (110 and 120) that includes a main mission antenna (MMA) (310 FIG. 3), antenna subsystem (320), and controller (350). Antenna subsystem (320) comprises a beamformer ... | 02/27/2001 |
| 6191732 | Real-time surveying/earth moving system The present invention includes a method and apparatus which determines the tree-dimensional (x, y, z coordinate) position of the receiving position of a GPS antenna on an earth-moving machine or a vehicle, determines the tilt of the machine or vehicle in ... | 02/20/2001 |
| 6191731 | GPS receiver having a fast time to first fix A global positioning system (GPS) receiver having a fast time to first fix using the velocity of a GPS satellite and an approximate time. The GPS receiver includes a GPS antenna for receiving a GPS signal, radio frequency circuitry for downconverting and ... | 02/20/2001 |
| 6191734 | Satellite tracking apparatus and control method for vehicle-mounted receive antenna system The present invention relates to a satellite tracking apparatus and control method for performing attitude control of a vehicle-mounted antenna for receiving a satellite broadcasting and operating the antenna. The present invention employs a hybrid tracki... | 02/20/2001 |
| 6188353 | Interbuilding and urban canyon extension solution for global positioning systems A global positioning system (GPS) and auxiliary receiver receive limited range position signals broadcasted from telemetry transmitters when in an urban canyon environment. The limited range receivers preferably are implemented as part of the lighting inf... | 02/13/2001 |
| 6184829 | Calibration for wireless location system Methods and apparatus for calibrating a Wireless Location System to enable the system to make highly accurate TDOA and FDOA measurements are disclosed. An external calibration method in accordance with the present invention comprises the steps of transmit... | 02/06/2001 |
| 6184825 | Method and apparatus for radio frequency beam pointing An RF beam pointing apparatus (500, 600) compensates for the effects of settling errors on antenna pointing. The beam pointing apparatus includes an attitude reference system (502, 528, 530, 534) generating an antenna attitude output from the satellite at... | 02/06/2001 |
| 6181276 | Sector shaping transition system and method Systems and methods are disclosed for providing transition between sector configurations of a multi-sectored cell wherein the subscriber units may detect the impending change in sector configuration and react accordingly. Sector transitions accomplished a... | 01/30/2001 |
| 6181275 | Positioning by computing pseudo-speeds in a satellite navigation system A method of locating a receiver in a navigation system comprising a constellation of satellites transmitting signals, includes the steps of: measuring pseudo-distances between the receiver and the satellites from the signals received from the satellites, measu... | 01/30/2001 |
| 6177907 | Method and apparatus for determining an angle of arrival of a transmitted signal in a communication system A method and apparatus for determining an angle-of-arrival (AOA) of the prompt ray at an adjacent sector of a base station is provided. High precision parameter estimates from a main sector location searcher (501) are provided to an adjacent sector locati... | 01/23/2001 |
| 6177906 | Multimode iterative adaptive smart antenna processing method and apparatus A method and apparatus is described for implementing adaptive smart antenna processing in a receiving communication station that includes an array of antennas and means for adaptive smart antenna processing, the method and apparatus including determining ... | 01/23/2001 |
| 6175330 | Array antenna and method for operating an array antenna Array antenna of the monopulse type for realizing, on the basis of at least two groups of radiators, of at least two receiving beams for obtaining a difference signal. According to the invention, the at least two groups are homogeneously distributed withi... | 01/16/2001 |
| 6175329 | Automatic emergency and position indicator An automatic emergency and position indicator includes a trigger; a global positioning system receiver for receiving a plurality of global positioning system satellite signals; a processor, responsive to the global positioning system receiver, for providi... | 01/16/2001 |
| 6175331 | Method and apparatus for determining and forming delayed waveforms for forming radio frequency transmitting or receiving beams for an array of radio frequency transmitting or receiving elements A method and system for use in an radio frequency system for determining and using beamform factors for forming radio frequency beams approximating an optimum radio frequency beam for the directional transmission or reception of radio frequency energy by ... | 01/16/2001 |
| 6175328 | Surveying method and surveying system comprising a radio navigation unit A surveying system is presented comprising a surveying equipment and a radio navigation unit comprising a radio navigation antenna and a radio navigation receiver, both removably connectable both on the survey equipment and on a survey object. The object ... | 01/16/2001 |
| 6172639 | Signal structure and processing technique for providing highly precise position, velocity, time and attitude information with particular application to navigation satellite systems including GPS In a GPS or similar radionavigation signal, a pair of coarse/acquisition signals are located at, near or toward the nulls of the precision/encrypted codes in the L1 band, the L2 band or both. The resulting difference in frequency provides a very wide lane... | 01/09/2001 |
| 6172640 | Pet locator There is disclosed an object locator system (10) for requesting and obtaining information about the location of an individual animal or moveable object, having a lightweight, attached object locator (42), that is present in a region served by a two-way pa... | 01/09/2001 |
