Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7075481 | System and method for determining freight container locations A system and method for determining the locations of freight containers in a freight yard is described. A remote unit that includes a GPS receiver is attached to the freight containers. The remote receivers have an independent power supply—a battery. Intermittentl... | 07/11/2006 |
| 6903681 | Global synchronization unit (GSU) for time and space (TS) stamping of input data elements A global synchronization unit (GSU) for time and space (TS) stamping of input data elements. The GSU comprises a GPS Receiver and an associated antenna for receiving GPS signals from signal sources associated with a GPS system symbolically embedded within a global r... | 06/07/2005 |
| 6891498 | Inertial reference system for a spacecraft An inertial reference system for a spacecraft includes an attitude control assembly and a plurality of force sensors. The attitude control assembly is coupled to a spacecraft body at a plurality of attachment points and at least one of the plurality of force sensors... | 05/10/2005 |
| 6888498 | Method and system for compensating satellite signals A method and system pertaining to a dual antenna compensation algorithm is provided. A local area augmentation system may include a dual antenna system to receive signals from satellites. The system may switch between the antennas to receive signals, and the transit... | 05/03/2005 |
| 6864838 | Ranging system and method for satellites In a satellite ranging system predetermined bit sequence or group of bit sequence in a transport stream, which is a digital signal are used to generate trigger signals on the basis of which the delay introduced into the transport stream by the travel path from a sat... | 03/08/2005 |
| 6850187 | Satellite integrity monitor and alert The present invention is a system for providing GPS users with a high level of confidence in the integrity and accuracy of received GPS signals. The system provides a means for each GPS satellite itself to verify the accuracy and/or integrity of its own operations b... | 02/01/2005 |
| 6844844 | System comprising a satellite with radiofrequency antenna The invention concerns a system comprising a radiofrequency antenna stationed in an orbit around the earth, and illuminating means for transmitting and/or receiving likewise orbiting round the earth located on at least a satellite separate from the one bearing the a... | 01/18/2005 |
| 6833813 | Method, receiver and system for determining the time of reception of a beacon signal The invention relates to a method and to devices for determining in a positioning system the time of reception of a beacon signal which was received and tracked by a receiver. In order to enable a re-acquisition of the system time based on a noisy received signal, i... | 12/21/2004 |
| 6812888 | Driver information system An information system for providing services including traffic and navigation services, as well as other information services to a driver. One versions of the system makes use of existing components of a wireless telephone system, for example, by using the input and... | 11/02/2004 |
| 6806828 | Passive range and angle measurement system and method A method determines range from a moving platform to an emitter. The method receives a RF signal from the emitter; counts a number of phase reversals of the received RF signal during a period of time; measures a Doppler frequency during the period of time; and determ... | 10/19/2004 |
| 6806830 | Electronic device precision location via local broadcast signals A location determination apparatus, method and system (10, 23, 26, 32, 36, 48, 52, 60, 64, 74, 78, 84, 90, 106) that is an improvement upon existing location determining techniques. The invention enables precision indoor location determination through the use... | 10/19/2004 |
| 6801159 | Device for use with a portable inertial navigation system (“PINS”) and method for transitioning between location technologies A perimeter threshold of an area is defined. The location of a device (102) is tracked using a first location technology (108) when the device (102) precedes the perimeter threshold. The location of the device (102) is tracked using a sec... | 10/05/2004 |
| 6801162 | Doppler-based automated direction finding system and method for locating cable television signal leaks Provided is a Doppler based automated direction finding system that detects radio frequency (RF) leaks in a cable television plant. During a ride-out, the system detects leaks and stores leak data, such as amplitude, location, and bearing. The stored data is uploade... | 10/05/2004 |
| 6791493 | Method for using signal frequency change to differentially resolve long baseline interferometer measurements A method of and apparatus for passively determining agile-frequency-emitter location and computer-readable medium bearing instructions therefor. Unless a specified accuracy threshold is met or exceeded, phase, frequency, and baseline position are measured during a s... | 09/14/2004 |
| 6788252 | Communication system using non-directional short range radio communications between user terminal device and road related facility A communication system is formed by a location information providing unit configured to provide a location information indicating a location of each road related facility arranged along a road, and a communication unit installed on each road related facility, config... | 09/07/2004 |
| 6788253 | Method and apparatus for use in improving accuracy in geo-location estimates A geo-location technique for use in mobile communications networks employs both FDD and Time Division Duplex (TDD) modes of operation, and is applicable when both FDD and TDD systems are jointly deployed or both FDD and TDD modes of a wireless system such as UMTS ar... | 09/07/2004 |
| 6788249 | System for setting coarse GPS time in a mobile station within an asynchronous wireless network A method and apparatus for setting coarse GPS time in a GPS receiver in a mobile station (MS) that is communicating with a base station and a position determining entity (PDE). The MS requests an assistance message from the PDE that includes a sequence of predicted ... | 09/07/2004 |
| 6784831 | Method and apparatus for GPS signal receiving that employs a frequency-division-multiplexed phased array communication mechanism An improved GPS signal receiver (and corresponding method of operation) includes a plurality of antenna elements each receiving a plurality of GPS signals (e.g., GPS LI signals or GPS L2 signals). A plurality of mixers (which correspond to the array of antenna eleme... | 08/31/2004 |
| 6784833 | Personal surveillance system with locating capabilities A personal surveillance system configured to be worn by an individual includes a communication system configured to record communication files, a locating system configured to determine a location of the personal surveillance system, and a transmitter configured to ... | 08/31/2004 |
| 6784842 | Method and system for calibrating a location system The present invention is useful in connection with calibration of a wireless location system based on RF signals within a facility. Identification devices are provided at fixed locations which are selected within the facility. The RF environment is sampled at select... | 08/31/2004 |
| 6784832 | Vehicle information system A vehicle information system which includes an in-vehicle system 105 and a centralized server system 120. The in-vehicle system communicates with the server system using a wireless communication link 110, such as over a cellular telephone system... | 08/31/2004 |
| 6784837 | Transmit/receiver module for active phased array antenna This invention relates to a transmit/receive module for a high power Active Phased Array Antenna system operating in L-band based upon a combination of Hybrid Microwave Integrated Circuit (MIC) as well as Monolithic Microwave Integrated Circuit (MMIC) technology. Th... | 08/31/2004 |
| 6784839 | Steerable antenna interferer rejection techniques A steerable antenna array (10) includes a plurality of antenna elements (12a-12f) which receive broad band signals and narrow band interfering signals which together form antenna signals. The antenna signals are combined with weigh... | 08/31/2004 |
| 6778130 | Position location method and apparatus for a mobile telecommunications system In a cellular mobile telecommunications system the position of a mobile station can be estimated in terms of its bearing and range from a cell site. A multi-element direction finding antenna at the cell site receives signals from the mobile station and a receiver ci... | 08/17/2004 |
| 6778138 | Apparatus for and method of forming multiple simultaneous electronically scanned beams using direct digital synthesis The apparatus/method according to the present invention accomplishes a reduction in the total number of direct digital synthesizers (DDSs) needed for use in electronically scanned antenna array to generate multiple simultaneous radio frequency (RF) beams. The appara... | 08/17/2004 |
| 6778134 | Method and apparatus for estimating GPS time A method of providing an estimate of GPS time from non-GPS timing information present in communications signals transmitted from a base station (BS1) to a first mobile communications device (MS1) is provided comprising the steps of (i) in a second mobi... | 08/17/2004 |
| 6774844 | Antenna structures based upon a generalized hausdorff design approach An approach to antenna design optimizes gain, beam pattern, polarization response, and other qualities through self-replicating patterns based upon iterative transformations and candidate geometric shapes. In the preferred embodiment Hausdorff structures are used to... | 08/10/2004 |
| 6774840 | Systems and methods for providing location-based arrival monitoring and notification Systems and methods for notifying a user that a specified person is within a specified distance of a specified meeting location are disclosed. A method according to the invention includes receiving a location signal that represents a current location of a specified ... | 08/10/2004 |
| 6774843 | Method for acquiring azimuth information A method for acquiring azimuth information enables acquisition of azimuth information by receiving signals transmitted by GPS satellites using only a single antenna. The method includes steps of disposing a GPS planar antenna having a hemispherical beam with its bea... | 08/10/2004 |
| 6774845 | Single receiver wireless tracking system A configurable directional antenna includes a center antenna element, a plurality of second antenna elements, and a switch matrix. Each second antenna element, together with the center antenna element, defines an antenna sector. A first portion of the second antenna... | 08/10/2004 |
| 6774841 | Method and system for processing positioning signals in a geometric mode A method for processing positioning signals in a ranging receiver in a geometric mode is provided. The method includes receiving timing information from a first set of satellites in a satellite constellation at the ranging receiver. The satellite constellation inclu... | 08/10/2004 |
| 6771214 | GPS near-far resistant receiver A method and receiver are disclosed for mitigating or substantially canceling signal interference between signals detected at the receiver. Once a presumed interfering signal(s) is acquired, parameters are determined that allow the interferer(s) to be modeled. An or... | 08/03/2004 |
| 6771211 | Method, system and devices for positioning a receiver The invention relates to a method for positioning a receiver receiving code modulated signals transmitted by satellites and formed by an individual code for each satellite. In order to provide a reliable reference position for the receiver, it is proposed that in a ... | 08/03/2004 |
| 6771217 | Phased array pointing determination using inverse pseudo-beacon A method and apparatus for determining and correcting for phased array mispointing errors, particularly those due to structural deformation, is disclosed. The method comprises the steps of receiving a signal from each of a plurality of signal sources at at least one... | 08/03/2004 |
| 6771220 | Memory efficient jammer locator for a digital adaptive beamforming receiver A method and computer program product are disclosed for locating signal jammers in a digital beamforming receiver having an antenna with a plurality of associated antenna orientations. An associated antenna gain value is calculated for a first of a sequence of the p... | 08/03/2004 |
| 6768453 | Array antenna system An array antenna system with an electrically large array antenna comprises first and second antenna subarrays and, a combination transmission line network, which has an input for receiving an antenna line signal and outputs connected with the first and second antenn... | 07/27/2004 |
| 6768457 | Diversity systems for receiving digital terrestrial and/or satellite radio signals for motor vehicles The invention relates to a diversity reception system for motor vehicles for digitally modulated terrestrial and/or satellite radio signals in a frequency range above 1 GHz. The system includes an antenna arrangement which supplies the reception signal to a radio re... | 07/27/2004 |
| 6768451 | Method for determining the correlation between a received beacon signal and a reconstructed signal The invention relates to a method for determining the correlation between a signal transmitted by a beacon and tracked by a receiver and a reconstructed signal expected to be received at the receiver, wherein the received signal and the reconstructed signal are shif... | 07/27/2004 |
| 6768458 | Photonically controlled active array radar system An active array radar system is controlled by photonic signals. The array of N antenna elements is divided into M subarrays, each having N/M antenna elements. Tunable lasers provide M optical wavelengths within non-overlapping bands. For transmission, a microwave tr... | 07/27/2004 |
| 6765530 | Array antenna having pairs of antenna elements An antenna apparatus capable of generating scanning beams through a range of 0°-90° is provided. The antenna apparatus includes one or more rows of antenna elements, with the antenna elements in each row being arranged in pairs. The elements within a pair are sepa... | 07/20/2004 |
