Patents by Inventor Kurt Dobson

Kurt Dobson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9104977
    Abstract: A system configured to predict characteristics of an artificial heart is described. The system includes a processor and memory in electronic communication with the processor, and an artificial neural network configured to receive an input vector of a predetermined length to train the artificial neural network, produce an output vector based on the input vector, and compare the output vector with a target vector of the predetermined length. When the output vector does not match the target vector within a predetermined error rate, the network is configured to adjust at least one weight, and when the output vector matches the target vector within the predetermined error rate, the network is configured to execute the input vector to produce an estimate at least one characteristic of the artificial heart.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: August 11, 2015
    Assignee: World Heart Corporation
    Inventors: W. Kurt Dobson, Ken Poppleton
  • Publication number: 20150006453
    Abstract: A system configured to predict characteristics of an artificial heart is described. The system includes a processor and memory in electronic communication with the processor, and an artificial neural network configured to receive an input vector of a predetermined length to train the artificial neural network, produce an output vector based on the input vector, and compare the output vector with a target vector of the predetermined length. When the output vector does not match the target vector within a predetermined error rate, the network is configured to adjust at least one weight, and when the output vector matches the target vector within the predetermined error rate, the network is configured to execute the input vector to produce an estimate at least one characteristic of the artificial heart.
    Type: Application
    Filed: September 9, 2014
    Publication date: January 1, 2015
    Inventors: W. Kurt Dobson, Ken Poppleton
  • Patent number: 8880450
    Abstract: A system configured to predict characteristics of an artificial heart is described. The system includes a processor and memory in electronic communication with the processor, and an artificial neural network configured to receive an input vector of a predetermined length to train the artificial neural network, produce an output vector based on the input vector, and compare the output vector with a target vector of the predetermined length. When the output vector does not match the target vector within a predetermined error rate, the network is configured to adjust at least one weight, and when the output vector matches the target vector within the predetermined error rate, the network is configured to execute the input vector to produce an estimate at least one characteristic of the artificial heart.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: November 4, 2014
    Assignee: World Heart Corporation
    Inventors: W. Kurt Dobson, Ken Poppleton
  • Patent number: 8706431
    Abstract: There are disclosed systems and methods of determining a fault location on a wire. In an embodiment, a system includes a PN code having a chip-time. Software code is provided for delaying the PN code a series of delays to form delayed PN samples, a sum of the series of delays being less than one chip-time. Software code is provided for summing the delayed PN samples with the PN code to form a summed sequence. Software code is provided for transmitting the summed PN sequence to the wire. Software code is provided for receiving a signal from the wire related to the summed PN sequence. Software code is provided for mixing the signal received from the wire with a delayed copy of the summed PN sequence so as to form a mixed signal. Software code is provided for integrating the mixed signal to map faults. Other embodiments are also disclosed.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 22, 2014
    Assignee: World Heart Corporation
    Inventors: W. Kurt Dobson, Gill Bearnson
  • Publication number: 20120303564
    Abstract: A system configured to predict characteristics of an artificial heart is described. The system includes a processor and memory in electronic communication with the processor, and an artificial neural network configured to receive an input vector of a predetermined length to train the artificial neural network, produce an output vector based on the input vector, and compare the output vector with a target vector of the predetermined length. When the output vector does not match the target vector within a predetermined error rate, the network is configured to adjust at least one weight, and when the output vector matches the target vector within the predetermined error rate, the network is configured to execute the input vector to produce an estimate at least one characteristic of the artificial heart.
    Type: Application
    Filed: May 26, 2011
    Publication date: November 29, 2012
    Applicant: World Heart Corporation
    Inventors: W. Kurt Dobson, Ken Poppleton
  • Publication number: 20120203493
    Abstract: An electrical wire includes a core comprising an electrically conductive material that conducts electricity along the length of the electrical wire. The core also includes an acoustic conductive material that conducts acoustic waves along the length of the electrical wire. The core also includes an acoustic waveguide that provides internal reflection for the acoustic waves conducted through the core, and that guides the acoustic waves along the length of the electrical wire. The response acoustic wave signals may be compared against a failure model for the wire in order to determine the reliability of the electrical wire.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Inventors: William Kurt Dobson, Zivile Ratkeviciute
  • Publication number: 20110313691
    Abstract: There are disclosed systems and methods of determining a fault location on a wire. In an embodiment, a system includes a PN code having a chip-time. Software code is provided for delaying the PN code a series of delays to form delayed PN samples, a sum of the series of delays being less than one chip-time. Software code is provided for summing the delayed PN samples with the PN code to form a summed sequence. Software code is provided for transmitting the summed PN sequence to the wire. Software code is provided for receiving a signal from the wire related to the summed PN sequence. Software code is provided for mixing the signal received from the wire with a delayed copy of the summed PN sequence so as to form a mixed signal. Software code is provided for integrating the mixed signal to map faults. Other embodiments are also disclosed.
    Type: Application
    Filed: June 22, 2010
    Publication date: December 22, 2011
    Applicant: WORLDHEART, INC.
    Inventors: W. Kurt Dobson, Gill Bearnson
  • Publication number: 20100214118
    Abstract: A system and method for tracking a person using a deduced reckoning device is disclosed. The method includes the operation of selecting an initial location of the person. The person's movement along a path is then monitored using directional sensors, including a digital magnetic compass, at least one accelerometer, at least one magnetometer, at least one gyroscope, and an altimeter. The person's changing location is recorded based on a change in outputs of the directional sensors that occur during the person's movement. The person's changing location is transmitted to a command and control center. The person's changing location is then displayed on a graphical user interface at the command and control center.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 26, 2010
    Inventors: Paul Losee, Joseph W. Blankshain, Lance King, Daniel C. Maxwell, William Kurt Dobson, Kent Garland, Fred Gallander
  • Publication number: 20100098216
    Abstract: Systems and methods for reducing signal noise in an x-ray emitter/detector system are disclosed. A common clock is connected to at least two subsystems of the x-ray emitter/detector system to enable a plurality of noise sources associated with the at least two subsystems within the x-ray emitter/detector system to be correlated with the common clock. At least one adaptive filter having a plurality of taps is configured to receive a desired signal and a correlated noise estimate signal and output an error signal. An update algorithm is used to update a value of the plurality of taps to minimize the error signal output to thereby substantially remove at least one of the plurality of noise sources at each of the at last one variable filters in the x-ray emitter/detector system to provide a more accurate display of the output of the x-ray emitter/detector system.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 22, 2010
    Applicant: MOXTEK, INC.
    Inventor: Kurt Dobson
  • Patent number: 7539235
    Abstract: A spread spectrum communications system using long, scalable PN sequences to achieve variable communication rates using a low-complexity and scalable matched filter architecture to provide a large processing gain, robust recovery of multiple devices in long reach, high ambient-noise environments.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: May 26, 2009
    Assignee: S5 Wireless, Inc.
    Inventors: W. Kurt Dobson, Dirk Ostermiller, Sy Prestwich, Scott Bevan
  • Patent number: 7339522
    Abstract: A method and system for determining the location of a mobile transmitting device that uses three dimensional location coordinates to triangulate the location using a time difference of arrival method, with diminishing errors, error correction and which takes advantage of global positioning systems without the requirement of highly accurate clocks in the mobile transmitting device and the base stations.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: March 4, 2008
    Assignee: S5 Wireless, Inc.
    Inventor: W. Kurt Dobson
  • Patent number: 7280579
    Abstract: A transmitter for a spread spectrum communications system may include a data source, a first multiplier/mixer spreading data from said data source with a first pseudo noise source, a second multiplier/mixer spreading data from said first mixer with a second pseudo noise source, and an RF transmitter. A receiver for a spread spectrum communications system may include an RF receiver, a first matched filter receiving data from said RF receiver, a plurality of phase/frequency shifters receiving a signal from said first matched filter, a plurality of second matched filters receiving data from said plurality of phase/frequency shifters, and an equalizer/decoder receiving signals from said plurality of second matched filters.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: October 9, 2007
    Inventors: W. Kurt Dobson, Dirk Ostermiller, Sy Prestwich, Scott Bevan
  • Patent number: 7236510
    Abstract: A spread spectrum communications system adapted to receive simultaneous signals from multiple transmitters, separates frequency error and equalizes and decodes continuous streams of data sets from a plurality of matched filters with frequency correction and which sorts through data and successfully decodes data bits. The spread spectrum communications system includes a transmitter and a receiver. The receiver includes an RF receiver. At least one PNB matched filter receives signals from the RF receiver. A plurality of frequency shifters receives a signal from the at least one PNB matched filter. A plurality of PNA matched filters receives data from the at least one PNB matched filter and the plurality of frequency shifters. An equalizer/decoder receives signals from the plurality of PNA matched filters.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: June 26, 2007
    Assignee: S5 Wireless, Inc.
    Inventors: W. Kurt Dobson, Dirk Ostermiller, Sy Prestwich, Scott Bevan
  • Patent number: 7092426
    Abstract: A spread spectrum communications system uses long, scalable PN sequences to achieve variable communication rates. A low-complexity and scalable matched filter architecture is used to provide a large processing gain and robust recovery of multiple devices in long reach, high ambient-noise environments. The spread spectrum communications system includes a transmitter and a receiver. The receiver includes an RF receiver and a first matched filter receiving data from the RF receiver. A plurality of phase/frequency shifters receives a signal from the first matched filter. A plurality of second matched filters receive data from the plurality of phase/frequency shifters. An equalizer/decoder receives signals from the plurality of phase/frequency shifters.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: August 15, 2006
    Assignee: S5 Wireless, Inc.
    Inventors: W. Kurt Dobson, Dirk Ostermiller, Sy Prestwich, Scott Bevan
  • Patent number: 6943729
    Abstract: A method and system for determining the location of a mobile transmitting device that uses three dimensional location coordinates to triangulate the location using a time difference of arrival method, with diminishing errors, error correction and which takes advantage of global positioning systems without the requirement of highly accurate clocks in the mobile transmitting device and the base stations.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: September 13, 2005
    Assignee: S5 Wireless, Inc.
    Inventor: W. Kurt Dobson
  • Patent number: 6891887
    Abstract: A LAN adapter device using an interpolative equalizer. The LAN adapter device allows LAN computing devices to connect to the LAN medium. The adapter devices are internal or external to the LAN devices and provide a transceiver and protocol stacks for the LAN devices to communicate with each other. The physical layer of the transceivers includes transmitter having a DMT modulator and demodulator that is dynamically configurable with respect to data rate and spectrum usage. Within the receiver is an equalizer that equalizes the received signal with a simple yet effective equalizer training method, thereby obviating the need for extensive equalizer training and long-term coefficient storage. The equalizer trains on known symbols transmitted on specific carriers that arc spaced apart in the frequency domain and then determines the channel response at those frequencies.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: May 10, 2005
    Assignee: 3Com Corporation
    Inventor: William Kurt Dobson
  • Patent number: 6735255
    Abstract: A correlator for use in a timing recovery apparatus of a receiver in a multicarrier transmission system. The correlator locates the beginning of a data frame and initializes a pointer register with an address to a location within the receive signal buffer. Data is transferred to a signal converter from the receive signal buffer where the samples that are fed into the converter are determined by the address stored in the pointer register.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: May 11, 2004
    Assignee: 3Com Corporation
    Inventors: Kevin J. Smart, Scott A. Bevan, William Kurt Dobson, Trent Stoddard, Mark W. Christiansen
  • Patent number: 6704317
    Abstract: A gateway modem server device for a home LAN. The modem server includes a first transceiver that utilizes DMT modulation methods for communication over the local LAN, and a second transceiver for communication with the access infrastructure that utilizes POTS telephone services. The LAN devices connected to the LAN access the modem server via LAN adapter devices. The adapter devices are internal or external to the LAN devices and provide a transceiver and protocol stacks for the LAN devices to communicate with each other. The physical layer of the transceivers includes transmitter having a DMT modulator and demodulator that is dynamically configurable with respect to data rate and spectrum usage. The devices communicate with the modem server and the modem server communicates to the POTS service provider over the same medium.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: March 9, 2004
    Assignee: 3Com Corporation
    Inventor: William Kurt Dobson
  • Patent number: 6690666
    Abstract: The subject invention defines the details of packet based DSL modulation. The invention claims a method for minimizing crosstalk generation by specifying a duty cycle for bursted carrier data traffic and a method of providing opportunistic echo canceller training. In this way the present invention minimizes power and interference while maximizing the peak capacity of a transceiver used in ADSL communication systems.
    Type: Grant
    Filed: May 29, 1999
    Date of Patent: February 10, 2004
    Assignee: 3Com Corporation
    Inventors: Andrew L. Norrell, Dale M. Walsh, William Kurt Dobson, Richard G. C. Williams, John Rosenlof
  • Patent number: 6603811
    Abstract: A low-complexity frequency domain equalizer having fast re-lock capabilities for use in a DMT transceiver. The transceiver includes a modulator that utilizes DMT modulation methods for communication over the transmission medium, a demodulator for receiving DMT signals, and a channel equalizer that operates in the frequency domain. The equalizer models the channel characteristic as an FIR filter that distorts the signal transmitted over the channel. The channel distortion is removed at the receiver by performing a de-convolution of the channel response via a frequency domain multiplication. After a period of inactivity of the receiver, the equalizer taps are updated by the use of a fast re-lock method so that the previously trained equalizer may be utilized. An undetermined sampling time offset is determined and is used to update the equalizer coefficients such that a full retraining of the equalizer is not required.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: August 5, 2003
    Assignee: 3Com Corporation
    Inventors: William Kurt Dobson, Mark W. Christiansen