Patents by Inventor Glenn A. Walker

Glenn A. Walker 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: 9042467
    Abstract: A method to decode an orthogonal frequency-division multiplex (OFDM) signal data block that includes symbol-data in a data interval, repeated-data in a cyclic-prefix (CP) guard interval, and noise. The signal is often called a CP-OFDM signal. The method includes determining a first data set based on data samples taken during a first time window of a data block. The method also includes determining a second data set based on data samples taken during a second time window of the data block, wherein the second time window is selected so that the second data set includes repeated-data not present in the first data set. The method also includes combining the first data set and the second data set in a manner effective to increase a signal-to-noise ratio of the signal. The combining process increases signal data energy more than noise data energy.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: May 26, 2015
    Assignee: Delphi Technologies, Inc.
    Inventor: Glenn A. Walker
  • Patent number: 9042809
    Abstract: A satellite communication system using hierarchical modulation to transmit a plurality of modulated signals to sub-regions within a region. Each modulated signal includes high priority content and low priority content. The system includes a satellite equipped with a plurality of satellite transmitters coupled to a plurality of antenna elements, e.g. a phased array of antenna elements. The antenna elements are utilized selectively to direct a modulated signal from a satellite transmitter to a distinct sub-region. The satellite transmitters and antenna also cooperate to broadcast the high-priority content to the region such that a ground receiver traveling from a first sub-region to an adjacent second sub-region adjacent will not experience a loss of high-priority content. First low-priority content of a first modulated signal directed to the first sub-region is independent of second low-priority content of a second modulated signal directed to the second sub-region.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: May 26, 2015
    Assignee: Delphi Technologies, Inc.
    Inventors: Glenn A. Walker, Eric A. Dibiaso
  • Publication number: 20140328439
    Abstract: A method to decode an orthogonal frequency-division multiplex (OFDM) signal data block that includes symbol-data in a data interval, repeated-data in a cyclic-prefix (CP) guard interval, and noise. The signal is often called a CP-OFDM signal. The method includes determining a first data set based on data samples taken during a first time window of a data block. The method also includes determining a second data set based on data samples taken during a second time window of the data block, wherein the second time window is selected so that the second data set includes repeated-data not present in the first data set. The method also includes combining the first data set and the second data set in a manner effective to increase a signal-to-noise ratio of the signal. The combining process increases signal data energy more than noise data energy.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 6, 2014
    Inventor: GLENN A. WALKER
  • Publication number: 20140286453
    Abstract: A satellite communication system using hierarchical modulation to transmit a plurality of modulated signals to sub-regions within a region. Each modulated signal includes high priority content and low priority content. The system includes a satellite equipped with a plurality of satellite transmitters coupled to a plurality of antenna elements, e.g. a phased array of antenna elements. The antenna elements are utilized selectively to direct a modulated signal from a satellite transmitter to a distinct sub-region. The satellite transmitters and antenna also cooperate to broadcast the high-priority content to the region such that a ground receiver traveling from a first sub-region to an adjacent second sub-region adjacent will not experience a loss of high-priority content. First low-priority content of a first modulated signal directed to the first sub-region is independent of second low-priority content of a second modulated signal directed to the second sub-region.
    Type: Application
    Filed: March 19, 2013
    Publication date: September 25, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: GLENN A. WALKER, ERIC A. DIBIASO
  • Patent number: 8842043
    Abstract: A method is presented to extend a frequency lock range of a received RF signal in a satellite receiver. One step in the method includes analyzing data information of a preamble associated with the received satellite RF signal. Another step includes determining an estimated frequency value that is a function of the analyzed data information that further includes at least a portion of the frequency error formed therein. A further step includes comparing the determined estimated frequency value to a predetermined threshold value. Another step includes using the determined estimated frequency value when the determined frequency value is greater than the predetermined threshold value to operatively control tracking mode electronic circuitry disposed in the satellite receiver to attain frequency lock on the received satellite RF signal.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: September 23, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Roger A. McDanell, Glenn A. Walker, Eric A. Dibiaso, Michael L. Hiatt, Jr.
  • Publication number: 20140227990
    Abstract: A communication system configured to communicate receiver-specific information from a transmitter to a plurality of receivers. Each of the receivers is assigned to one of a plurality of groups based on a group identification value stored in each receiver. A first receiver group is configured to operate during a first information-expected time interval. The first information-expected time interval is determined based on a reception time of a time-reference signal and a first group identification value. A second receiver group is configured to operate during a second information-expected time interval distinct from the first information-expected time interval. The second information-expected time interval is determined based on the reception time of the time-reference signal and a second group identification value.
    Type: Application
    Filed: February 28, 2014
    Publication date: August 14, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: GLENN A. WALKER
  • Publication number: 20140198721
    Abstract: A system and method of controlling communication between a satellite transceiver and a ground transceiver, where the satellite transceiver is configured to receive concurrently a plurality of messages at substantially the same carrier frequency from a plurality of ground transceivers. The satellite transceiver transmits a ranking threshold indicative of a transmit power that a ground transceiver is authorized to use to transmit a message. The ground transceiver receives the ranking threshold transmitted by the ground transceiver, and determines a transmit power of the transmitter to transmit a message based on a comparison of the ranking threshold and a transceiver ranking of the ground transceiver.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 17, 2014
    Inventors: Glenn A. Walker, Joseph R. Dockemeyer, JR.
  • Publication number: 20140199941
    Abstract: A system and method of controlling communication between a satellite transceiver and a ground transceiver, where the satellite transceiver is configured to receive concurrently a plurality of messages at substantially the same carrier frequency from a plurality of ground transceivers. The satellite transceiver transmits a time reference signal. The ground transceiver receives the time reference signal, and determines a transmit time that the ground transceiver is authorized to transmit a message based on an identification number of the ground transceiver.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 17, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Glenn A. Walker, Joseph R. Dockemeyer, JR.
  • Patent number: 8712364
    Abstract: An in-vehicle communication system configured to receive signals from a transmitter configured to transmit periodically a time-reference signal and receiver specific information. An information transmission time of receiver specific information is timed relative to a reference transmission time of the time-reference signal. The system includes a receiver characterized as having a receiver identification value. The receiver is configured to operate from an off-state to an on-state during an information-expected time interval to receive receiver specific information. The information-expected time interval is determined based on a reception time of the time-reference signal and the receiver identification value. This provides a way to ensure that the transmitter only transmits messages when it knows the intended receiver is on. It also ensures that the receiver is on only when messages that for that receiver are expected to be received.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: April 29, 2014
    Assignee: Delphi Technologies, Inc.
    Inventor: Glenn A. Walker
  • Publication number: 20140080438
    Abstract: An in-vehicle communication system configured to receive signals from a transmitter configured to transmit periodically a time-reference signal and receiver specific information. An information transmission time of receiver specific information is timed relative to a reference transmission time of the time-reference signal. The system includes a receiver characterized as having a receiver identification value. The receiver is configured to operate from an off-state to an on-state during an information-expected time interval to receive receiver specific information. The information-expected time interval is determined based on a reception time of the time-reference signal and the receiver identification value. This provides a way to ensure that the transmitter only transmits messages when it knows the intended receiver is on. It also ensures that the receiver is on only when messages that for that receiver are expected to be received.
    Type: Application
    Filed: September 18, 2012
    Publication date: March 20, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: GLENN A. WALKER
  • Patent number: 8599971
    Abstract: A communication system utilizing a hierarchically modulated signal and method thereof are provided, wherein a receiver system is configured to receive a hierarchically modulated signal. The receiver system includes a receiver device configured to receive the hierarchically modulated signal, which is a function of a time domain, and including a high priority data stream that has a single carrier type modulation, and a low priority data stream having data bits that are spread over a plurality of data symbols of a high priority data modulation. The receiver system further includes a low priority processor device, which includes an OFDM decoder configured to convert the low priority data stream of the hierarchically modulated signal that is a function of the time domain to be a function of a frequency domain by utilizing a FFT, such that an output is emitted that is representative of the low priority data stream.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: December 3, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Glenn A. Walker
  • Patent number: 8548407
    Abstract: An antenna assembly, a receiver, and a system configured to superimpose a first received signal from a first antenna and an intermediate signal based on a second received signal from a second antenna onto a single cable. The antenna assembly includes a mixer and an adjustable local oscillator (ALO) that frequency shift the second received signal to generate the intermediate signal. The output frequency of the ALO is controlled by a control signal superimposed on the single cable that is output by the receiver. With this arrangement, a plurality of antennas or antenna elements can be connected to a receiver using a single coaxial cable. Such an arrangement is particularly desirable to manufacturers of automobiles and other vehicles. Also, the receiver can detect if the output frequency of the ALO needs to be adjusted, and so close-loop control of the output frequency is possible.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: October 1, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Glenn A. Walker
  • Publication number: 20130162466
    Abstract: A method is presented to extend a frequency lock range of a received RF signal in a satellite receiver. One step in the method includes analyzing data information of a preamble associated with the received satellite RF signal. Another step includes determining an estimated frequency value that is a function of the analyzed data information that further includes at least a portion of the frequency error formed therein. A further step includes comparing the determined estimated frequency value to a predetermined threshold value. Another step includes using the determined estimated frequency value when the determined frequency value is greater than the predetermined threshold value to operatively control tracking mode electronic circuitry disposed in the satellite receiver to attain frequency lock on the received satellite RF signal.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 27, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Roger A. MCDANELL, Glenn A. WALKER, Eric A. DIBIASO, Michael L. HIATT, JR.
  • Patent number: 8442425
    Abstract: Long time interleaver and listenable audio performance enhancements for a satellite receiver are presented. One enhancement includes comparing a correlation and a predetermined threshold value and blocking satellite signal data transmission from entry into long time interleaver (LTI) device circuitry and forward error correction (FEC) circuitry when the correlation value is the same as, or less than the predetermined threshold value. Another enhancement includes using Reed-Solomon codeword error checking to prevent erroneous baseband signal data from being accepted as good baseband signal data. A further enhancement includes storing symbol timing and frequency data during a strong signal condition of the satellite receiver and using this stored data when the satellite receiver encounters a weak signal condition. Another enhancement includes mitigating DC offset noise in a satellite receiver having a zero-IF tuner.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: May 14, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Glenn A. Walker, Eric A. Dibiaso, Roger A. McDanell, Michael L. Hiatt, Jr.
  • Publication number: 20130089126
    Abstract: Long time interleaver and listenable audio performance enhancements for a satellite receiver are presented. One enhancement includes comparing a correlation and a predetermined threshold value and blocking satellite signal data transmission from entry into long time interleaver (LTI) device circuitry and forward error correction (FEC) circuitry when the correlation value is the same as, or less than the predetermined threshold value. Another enhancement includes using Reed-Solomon codeword error checking to prevent erroneous baseband signal data from being accepted as good baseband signal data. A further enhancement includes storing symbol timing and frequency data during a strong signal condition of the satellite receiver and using this stored data when the satellite receiver encounters a weak signal condition. Another enhancement includes mitigating DC offset noise in a satellite receiver having a zero-IF tuner.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 11, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: GLENN A. WALKER, ERIC A. DIBIASO, ROGER A. MCDANELL, MICHAEL L. HIATT,, JR.
  • Publication number: 20130044826
    Abstract: An antenna assembly, a receiver, and a system configured to superimpose a first received signal from a first antenna and an intermediate signal based on a second received signal from a second antenna onto a single cable. The antenna assembly includes a mixer and an adjustable local oscillator (ALO) that frequency shift the second received signal to generate the intermediate signal. The output frequency of the ALO is controlled by a control signal superimposed on the single cable that is output by the receiver. With this arrangement, a plurality of antennas or antenna elements can be connected to a receiver using a single coaxial cable. Such an arrangement is particularly desirable to manufacturers of automobiles and other vehicles. Also, the receiver can detect if the output frequency of the ALO needs to be adjusted, and so close-loop control of the output frequency is possible.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 21, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: GLENN A. WALKER
  • Patent number: 8379769
    Abstract: A communication system utilizing a hierarchically modulated signal and method thereof are provided, wherein a receiver system is configured to receive a hierarchically modulated signal. The receiver system includes a receiver device configured to receive the hierarchically modulated signal, which is a function of a time domain, and including a high priority data stream that has a single carrier type modulation, and a low priority data stream having data bits that are spread over a plurality of data symbols of a high priority data modulation. The receiver system further includes a low priority processor device, which includes an OFDM decoder configured to convert the low priority data stream of the hierarchically modulated signal that is a function of the time domain to be a function of a frequency domain by utilizing a FFT, such that an output is emitted that is representative of the low priority data stream.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 19, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Glenn A. Walker
  • Patent number: 8115676
    Abstract: A communications system and method thereof are provided, wherein the system includes a first receiver. The first receiver includes at least one antenna element configured to receive the first signal having a first polarization, and a combiner in communication with the at least one antenna element, wherein the combiner enhances the first signal and minimizes a second signal having a second polarization that is different than the first polarization of the first signal, such that an output is emitted by the first receiver based upon the received first signal. The first receiver further includes a beam steerer in communication with the combiner, wherein the beam steerer is configured to steer an antenna beam of the at least one antenna element in order to minimize reflection of the second signal, such that the second polarization of the second signal remains different than the first polarization of the first signal.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: February 14, 2012
    Assignee: Delphi Technologies, Inc.
    Inventors: Glenn A. Walker, Daniel G. Morris
  • Publication number: 20110275309
    Abstract: A communication system and method thereof are provided, wherein the system includes a first satellite configured to re-transmit at least a first transmitted signal at a first frequency band, a second satellite configured to re-transmit the first transmitted signal at a second frequency band, and a first terrestrial repeater configured to re-transmit the first transmitted signal at a third frequency band. The system further includes a third satellite configured to re-transmit a second transmitted signal at the third frequency band that is different than the first transmitted signal re-transmitted by the first and second satellites, such that the first signal re-transmitted by the first terrestrial repeater, and the second signal re-transmitted by the third satellite interfere with one another, wherein the first signals re-transmitted by the first satellite, the second satellite, and the first terrestrial repeater includes substantially the same data.
    Type: Application
    Filed: May 10, 2010
    Publication date: November 10, 2011
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: GLENN A. WALKER
  • Patent number: 8050312
    Abstract: A system and method of multi-source communications, including a source provider, a transmitter, a receiver, a summing device, a plurality of delay devices, and a switch. The source provider provides a signal including a first and second signal. The transmitter is in communication with the source provider and the receiver. The receiver is in communication with the transmitter. The summing device combines the first and second signals received by the receiver. The delay device delays at least one of the first and second signals. The switch forms a bypass, such that at least one of the first and second signals bypasses one of the plurality of delay devices.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: November 1, 2011
    Assignee: Delphi Technologies, Inc.
    Inventors: Eric A. Dibiaso, Glenn A. Walker