| Patent Number |
Title Of Patent |
Date Issued |
| 7428453 |
System and method for monitoring train arrival and departure latencies |
September 23, 2008 |
| Methods and systems for monitoring trains in a railyard. These methods and systems detect an incoming train entering a geographic area defined by a railyard, store an entry time indicative of a time at which the incoming train entering the railyard was detected, detect the incoming train |
| 7426272 |
Instrumentation privacy methods and apparatuses |
September 16, 2008 |
| The present invention provides methods and apparatuses for implementing communications privacy on a class of two-way wireless control communications. The methods and apparatuses of the present invention are cryptographic in nature and are built on a symmetric cryptographic algorithm |
| 7388483 |
Monitoring status of railyard equipment using wireless sensing devices |
June 17, 2008 |
| A wireless position sensing device is provided for monitoring railyard equipment status. The device comprises a gravity sensing mechanism for sensing an angular displacement with respect to a substantially vertical line, and for generating a displacement signal upon sensing a change in |
| 7376451 |
Measurement and treatment system and method |
May 20, 2008 |
| A non-intrusive physiological data measurement system and method, as well as an optically induced treatment system, are described. The measurement system includes a monitoring mechanism that includes light emitter modules capable of emitting light at at least two wavelengths. The light |
| 7364123 |
Self powered railway monitoring system |
April 29, 2008 |
| A data gathering apparatus comprises a power generation device configured to generate power via movement of the rail. The data gathering apparatus further comprises a sensing device configured to receive power from the power generation device and to sense at least one property of the rai |
| 7317994 |
Method and apparatus for signal signature analysis for event detection in rotating machinery |
January 8, 2008 |
| A method for analyzing vibration including: acquiring a vibration signal; isolating a vibration signal event in the acquired signal; determining a frequency of a damped sinusoid of the vibration signal event, wherein the damped sinusoid characterizes the vibration signal event, and using |
| 7287087 |
Communications network for dynamic reprioritization |
October 23, 2007 |
| A communications network comprising at least one source unit is configured to generate messages for relay to a portal node through at least one smart node. The smart node includes a dynamic reprioritization controller capable of dynamically reprioritizing the relayed messages prior to re |
| 7270442 |
System and method for monitoring status of a visual signal device |
September 18, 2007 |
| System and method for monitoring status of a visual signal lamp. The system includes at least one optical fiber comprising a first end and a second end. The first end is positioned proximate to the signal lamp and is oriented to capture a portion of light signal emitted by the signal |
| 7269427 |
Transmitter location for ultra-wideband, transmitted-reference CDMA communication system |
September 11, 2007 |
| A system and method involve tracking the location of objects within an area of interest using transmitted-reference ultra-wideband (TR-UWB) signals. The system includes at least three base stations communicating with a central processor, at least one mobile device and at least one fi |
| 7269201 |
Time-delayed transmitted reference spread spectrum transmitter with digital noise generator |
September 11, 2007 |
| Circuits are provided for transmitted reference spread spectrum systems using a noise-like digital sequence with delayed replica. The circuits produce the digital spreading sequences at extremely high speed, and are capable of providing a great degree of signal spreading. A first emb |
| 7262729 |
Radio detection and ranging intrusion detection system |
August 28, 2007 |
| A radar system having a processor, a waveform generator, a plurality of antenna interfaces, a set of first antennas configured to transmit a waveform, and a set of second antennas configured to receive a reflected waveform is disclosed. The waveform generator and antenna interfaces are |
| 7236503 |
Short range RF communication for jet engine control |
June 26, 2007 |
| A method transmitting a message over at least one of a plurality of radio frequency (RF) channels of an RF communications network is provided. The method comprises the steps of detecting a presence of jamming pulses in the at least one of the plurality of RF channels. The characteristics |
| 7234062 |
Authentication of remote appliance messages using an embedded cryptographic device |
June 19, 2007 |
| A method for authenticating appliance messages sent between an appliance and an appliance communication center over an appliance communications network includes maintaining a shared message counter at both the appliance communication center. A shared message counter at both the appli |
| 7215212 |
Apparatus for monitoring temperature and method for operating same |
May 8, 2007 |
| The present invention is directed to a system that enables the simultaneous remote monitoring of a plurality of infants' skin temperatures. The system comprises an electronic circuit that combines the functions of sensoring and multiple-channel transmitting, a pre-deployment temperat |
| 7154934 |
Robust, low complexity communications system with interference mitigation |
December 26, 2006 |
| A system for short range communications includes a transmitter capable of transmitting a colored noise-like preamble. A receiver receives the colored noise-like preamble and the receiver includes an antenna with an antenna pattern. A direction of the antenna is controllable by the re |
| 7148581 |
Rail based electric power generation system |
December 12, 2006 |
| An electrical power generation system comprises a variable capacitor and a power source. The electrical power generation system is configured to generate electric power via movements of the rail. The power source is used in the form of a generator to prime the variable capacitor that |
| 7109920 |
Moving platform position determination system and method |
September 19, 2006 |
| A system and method for determining a position of a moving platform are provided. The method includes transmitting a carrier signal from one of the moving platform and a stationary platform, receiving a received signal at the other of the moving and stationary platforms, deriving a f |
| 7068715 |
Ultra-wideband communications system and method using a delay hopped, continuous noise transmitt |
June 27, 2006 |
| An ultra-wideband (UWB) communications system combines the techniques of a transmitted reference (TR) and a multiple access scheme called delay hopping (DH). Combining these two techniques using UWB signaling using a continuous noise transmitted waveform avoids the synchronization di |
| 6943668 |
Apparatus and method for reconfiguring a power line communication system |
September 13, 2005 |
| A geometric harmonic modulation (GHM) communication system communicates GHM signals on a power line of a reconfigurable network. The GHM communication system includes a master controller connected to the power line for transmitting GHM signals on the power line. A boundary component is a |
| 6914539 |
System and method for a low rate, in-band broadcast communication for medical telemetry |
July 5, 2005 |
| A medical telemetry system includes a central station having a central station receiver and a central station transmitter that both operate on a frequency bandwidth having frequency multiplexed transmission channels and guard bands. A guard band separates each of the frequency-multiplexe |
| 6826267 |
Internet enabled appliance command structure |
November 30, 2004 |
| Appliances (102, 102, 106 and 108) are controlled by providing a source (2016, 112) of command fields (CMD, FIG. 2) that include a context subfield (Community, FIG. 4) defining operating modes and a command subfield (Command, FIG. 4) defining operations to be performed within the con |
| 6810087 |
Ultra-wideband communications system |
October 26, 2004 |
| An ultra-wideband (UWB) communications system combines the techniques of a transmitted reference (TR) and a multiple access scheme called delay hopping (DH). Combining these two techniques using UWB signaling results in a penalty in signal-to-noise ratio (SNR) over conventional pulse |
| 6792058 |
Digital receiving system for dense environment of aircraft |
September 14, 2004 |
| The capacity of a Mode-S ADS-B surveillance radar system is increased by sectorizing the radar system by the use of a directional array of Mode-S, quarter wavelength, single element, stub antennas. The ensemble of signals from the array of Mode-S antenna elements is processed electronica |
| 6781513 |
Telemetry of diagnostic messages from a mobile asset to a remote station |
August 24, 2004 |
| A telemeter for telemetry of diagnostic messages from a mobile asset to a remote station comprises a processor coupled to the output of one or more condition sensors. The processor converts the output of the condition sensors to a diagnostic message, and provides the diagnostic message a |
| 6742392 |
Method and apparatus for inducing ultrasonic waves into railroad rails |
June 1, 2004 |
| A method and apparatus for nondestructive testing a railroad rail is provided. The method includes locating at least one magnetic exciter adjacent to the rail, the at least one magnetic exciter includes an emitting end and a longitudinal axis extending perpendicularly through the emi |
| 6738931 |
Reliability assessment method, apparatus and system for quality control |
May 18, 2004 |
| A reliability assessment analysis system. Included as part of system are a plurality of analysis stations, at least one of the analysis stations being located at a remote geographic location from others, and each of the analysis stations being capable of performing reliability assessment |
| 6728580 |
Method and apparatus for estimating time to failure acceleration factor |
April 27, 2004 |
| An apparatus for estimating the time to failure acceleration factor of a large industrial motor includes a sensor, a clock for controlling sensor sampling times, and a memory address calculator for mapping output signals of the sensor to a memory address. A unit is provided for increment |
| 6697762 |
Apparatus and method for analyzing brittleness of a system |
February 24, 2004 |
| The invention provides a computer implemented tool for analyzing the brittleness of a system with respect to at least one system performance measure. The tool comprises a statistical analyzer configured to receive at least one operating parameter input, o, and to provide at least one |
| 6668012 |
Identification of an identifiable code sequence in a received signal by correlation with summed |
December 23, 2003 |
| A receiver for a unique word sequence or a spreading code sequence includes a memory which is preloaded with all possible phases of the code. The sequence in the received signal is correlated, in parallel, with sums of various ones of the different phases of the code. Thus, the received |
| 6633104 |
Method and apparatus for estimating DC motor brush wear |
October 14, 2003 |
| An apparatus for estimating DC motor brush wear comprising: a wear element calculator adapted to calculate a plurality of wear elements from at least one environmental variable; a wear element multiplier adapted to multiply the wear elements by respective ones of a plurality of wear coef |
| 6626356 |
Multi-use credit card for financial transactions and vehicle configuration |
September 30, 2003 |
| A credit card system and method for configuring a vehicle specific to a user and for transacting financial transactions, the system comprising a User Preference and Information Database containing information specific to said user for configuring a specific vehicle, a credit card capable |
| 6621855 |
Scalable spread-spectrum signal detection and acquisition processor |
September 16, 2003 |
| A method allows determination of the presence of, the frequency of, and or the timing of a coded signal distributed in time, as for example a direct-sequence spread-spectrum signal or a signal having a coded header. According to the method, the received signal is correlated (16, 216, 316 |
| 6583392 |
Apparatus and method for determining properties of a cooktop using ultrasound techniques |
June 24, 2003 |
| An apparatus for determining at least one property of a cooktop is provided. The cooktop includes a cooktop surface and a vessel selectively positioned on the cooktop surface. The apparatus comprises an ultrasound transducer contacting the cooktop surface. The ultrasound transducer i |
| 6577353 |
Optimization of television reception by selecting among or combining multiple antenna inputs |
June 10, 2003 |
| In a system for optimizing television reception by a television receiver receiving a diversity of input signals from a plurality of antennas, one of a plurality of combiners and television tuners selects the strongest combination of input signals for viewing and another scans the various |
| 6570497 |
Apparatus and method for rail track inspection |
May 27, 2003 |
| An apparatus for inspecting an operational condition of a rail track from a railcar includes an antenna positioned on the railcar that directs radar signals toward the rail track and collects radar signals returned from the rail track. A radar transceiver is connected to the antenna and |
| 6542536 |
Spread spectrum communications with selectable data transfer rates |
April 1, 2003 |
| A spread spectrum communications system that is operable to provide user-selectable data transfer rates comprises a user station for generating an access request and a gateway server for receiving the access request. The gateway server includes a rate unit for comparing a requested r |
| 6539062 |
Pilot signal control for digital television DTV transmission |
March 25, 2003 |
| An Advanced Television Standards Committee (ATSC)-compliant pilot tone is generated within an 8-VSB (eight level vestigial sideband) transmission in order to enable Quadrature Amplitude Modulation (QAM) receiver designs to more efficiently process the transmitted/received 8-VSB signal. T |
| 6538704 |
NTSC tuner to improve ATSC channel acquisition and reception |
March 25, 2003 |
| Reduction in the time required for an Advanced Television Standards Committee (ATSC) digital television tuner to equalize, converge, and acquire a digital television signal suitable for viewing, wherein early model ATSC tuners also include a National Television Standards Committee (N |
| 6522243 |
Geometric harmonic modulation signaling and detection |
February 18, 2003 |
| A communication system includes a transmitter configured to pulse shape a GHM signal to confine the frequency spectrum of the GHM signal within a predefined frequency range. A receiver is also included that receives the transmitted GHM signal. The receiver includes a processor for maximi |
| 6506160 |
Frequency division multiplexed wireline communication for ultrasound probe |
January 14, 2003 |
| Received echo data are transferred from an ultrasound probe to the signal processing circuitry of an ultrasound imaging system by use of a reduced number of multiple coaxial cables. The system operates by frequency division multiplexing of the analog output signals produced by multiple |
| 6498627 |
Use of wideband DTV overlay signals for brevity signaling and public safety |
December 24, 2002 |
| A brevity signaling module for a digital television (DTV) receiver enables the reception of emergency broadcast messages. The overlay signal received at the receiver front end is squared in a squaring loop, producing spectral lines at DC and twice the overlay signal frequency, or 2.omega |
| 6497656 |
Integrated wireless broadband communications network |
December 24, 2002 |
| An integrated tracking, telemetry and local area networking system is provided. A communications system comprises a broadband subsystem comprising at least one UWB node including a first UWB transceiver and at least one application node linked to the UWB node by a broadband link. The |
| 6473677 |
Method and apparatus for determining an effective jet engine maintenance schedule |
October 29, 2002 |
| A system for determining a maintenance schedule for a jet engine using at least remotely-gathered environmental data is provided. The system includes a remote monitor having a sensor for collecting the remotely-gathered environmental data. A data pathway is connected to the remote mo |
| 6459741 |
Implementation of N-VSB training sequences in N-squared QAM receiver structures |
October 1, 2002 |
| Training sequences designed for N-VSB systems within the embodiment of an N-squared QAM receiver facilitate designing 8-VSB receivers using methodologies of 64-QAM receiver design. A receiver designed using such methodologies converts the received modulation into a signal which can be |
| 6437832 |
Mitigation of multipath using ultra wideband DTV overlay signal |
August 20, 2002 |
| DTV broadcast transmission is provided with a ultra wideband overlay signal which is used by suitably equipped DTV receivers to dynamically estimate the channel and allow expeditious and effective mitigation of changing multipath conditions. Periodic correlation peaks are detected in the |
| 6433744 |
Wideband patch antenna |
August 13, 2002 |
| An antenna comprising two essentially identical electrically conducting rectangular plates lying in parallel planes and separated so that a gap is formed between the plates also includes a dielectric situated within the gap and exhibiting a relative permittivity that changes with frequen |
| 6430210 |
Receiver for detecting an amplitude modulated signal insinuated on an GHM signal |
August 6, 2002 |
| A receiver for enabling one-way communications in a GHM network which does not interfere with or reduce the capability of the GHM network. The receiver detects a small modulation factor signal present on the GHM signal normally transmitted by the GHM transmitter. If the frequency of |
| 6426720 |
System and method for directing an adaptive antenna array |
July 30, 2002 |
| A system for directing a receiving lobe of an adaptive antenna array toward an aircraft in flight includes an aircraft position vector calculator and an antenna weight vector generator. The aircraft position vector calculator receives aircraft position information from an aircraft tr |
| 6424250 |
Communication system utilizing modified geometric harmonic modulation |
July 23, 2002 |
| A communication system for communicating a modified geometric harmonic modulated (GHM) signal on a power line is described. The system includes a transmitter for transmitting a GHM signal having a plurality of carriers, a highest frequency carrier being about 630 Hz, and a receiver for |
| 6417890 |
Modulation of pilot tone amplitude in DTV broadcast for faster channel acquisition |
July 9, 2002 |
| The existing ATSC broadcast standard is modified to improve both the speed at which the periodically transmitted training sequence is found after channel selection by a viewer and the speed at which synchronization is achieved to a continuous wideband overlay signal used for equalization |
