Patents by Inventor Michael J. Luddy

Michael J. Luddy 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: 10205513
    Abstract: A method of optimizing BLoS communications between a first asset and a second asset using at least one of atmospheric troposcatter and ducting signal propagating phenomena includes transmitting a plurality of test signals from multiple antenna elements of the first asset into the atmosphere. At least a portion of the test signals are received at multiple antenna elements of the second asset. The second asset is configured to calculate a gain and phase shift of the channel between each transmitting and receiving antenna element, calculate optimized antenna weights for the transmitting and receiving antenna elements, and estimate a communication channel coherence time and coherence bandwidth. These parameters may be transmitted to the first asset and applied thereto for optimizing communications between the first and second assets.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 12, 2019
    Assignee: Lockheed Martin Corporation
    Inventors: Jack H. Winters, Michael J. Luddy, Daniel H. Moskowitz
  • Patent number: 10103799
    Abstract: A system for providing underwater communication using orbital angular momentum (OAM) includes a transmitter that processes input data to be transmitted using pre-coding information based on current transmission channel conditions to maximize data rate based on channel conditions. A receiver receives a transmitted multiplexed OAM optical signal and analyzes the received signal for channel state information. The channel state information is used to determine a set of pre-coding values that allow the transmitter to pre-code the input data to maximize the data rate based on current channel conditions. The pre-coding values are mapped to a codebook entry which identifies the pre-coding values. The codebook entry is transmitted from the receiver to the transmitter. The transmitter uses the received codebook entry to identify pre-coding values used to process subsequent input data to be transmitted in order to enhance data rate across the transmit channel.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: October 16, 2018
    Assignee: Lockheed Martin Corporation
    Inventors: Michael J. Luddy, Jack H. Winters
  • Patent number: 9964637
    Abstract: A method for tracking an object of interest with a passive radar system using multiple radar sensors. The method includes the steps of receiving, with at least one controller, radar sensor characteristics and radar sensor locations data for a plurality of radar receivers occupying an area of interest. Data indicative of direct or reflected radar return signals from emitters of opportunity received by the plurality of radar receivers is also received at the controller. From this data, objects of interest are identified. The controller is configured to calculate optimized radar sensor parameters for the plurality of radar receivers for each identified object of interest, and transmit the same to the plurality of radar receivers for implementation. Radar return data received by the plurality of radar receivers using the optimized sensor parameters is provided to the central controller, and updated optimized sensor parameters according to the updated received radar return data are calculated.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: May 8, 2018
    Assignee: Lockheed Martin Corporation
    Inventors: Jack H. Winters, Donna F. Smith, Michael J. Luddy
  • Publication number: 20170187442
    Abstract: A system for providing underwater communication using orbital angular momentum (OAM) includes a transmitter that processes input data to be transmitted using pre-coding information based on current transmission channel conditions to maximize data rate based on channel conditions. A receiver receives a transmitted multiplexed OAM optical signal and analyzes the received signal for channel state information. The channel state information is used to determine a set of pre-coding values that allow the transmitter to pre-code the input data to maximize the data rate based on current channel conditions. The pre-coding values are mapped to a codebook entry which identifies the pre-coding values. The codebook entry is transmitted from the receiver to the transmitter. The transmitter uses the received codebook entry to identify pre-coding values used to process subsequent input data to be transmitted in order to enhance data rate across the transmit channel.
    Type: Application
    Filed: March 15, 2016
    Publication date: June 29, 2017
    Inventors: Michael J. LUDDY, Jack H. WINTERS
  • Patent number: 9247533
    Abstract: A method and subscriber unit used for communicating in voiced communications are disclosed. The method for use in a subscriber unit may include receiving, from a cellular base station, a first signal at a first data rate and a first modulation scheme, transmitting a second signal, to the cellular base station, indicative of a subscriber station capability to receive a third signal at a second date rate and a second modulation type, and receiving, from the cellular base station, based on the transmitted second signal, a third signal at the second data rate and second modulation type.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 26, 2016
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 8699469
    Abstract: A subscriber unit, used for communicating in voiced communications at a first data rate and communicating at a second data rate for other data, suppresses a selected communication during communication rate modification. A determination is made as to whether the transmission requires a change in data rate, and a switching circuit responds by engaging a different communication channel. Blocking circuitry blocks transmissions until the different data rate is established. This provides an optimum data rate, while preserving the integrity of the data transmitted.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 15, 2014
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Publication number: 20130308609
    Abstract: A method and subscriber unit used for communicating in voiced communications are disclosed. The method for use in a subscriber unit may include receiving, from a cellular base station, a first signal at a first data rate and a first modulation scheme, transmitting a second signal, to the cellular base station, indicative of a subscriber station capability to receive a third signal at a second date rate and a second modulation type, and receiving, from the cellular base station, based on the transmitted second signal, a third signal at the second data rate and second modulation type.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Inventor: Michael J. Luddy
  • Publication number: 20110058534
    Abstract: A subscriber unit, used for communicating in voiced communications at a first data rate and communicating at a second data rate for other data, suppresses a selected communication during communication rate modification. A determination is made as to whether the transmission requires a change in data rate, and a switching circuit responds by engaging a different communication channel. Blocking circuitry blocks transmissions until the different data rate is established. This provides an optimum data rate, while preserving the integrity of the data transmitted.
    Type: Application
    Filed: November 15, 2010
    Publication date: March 10, 2011
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventor: Michael J. Luddy
  • Patent number: 7835308
    Abstract: A subscriber unit, used for communicating in voiced communications at a first data rate and communicating at a second data rate for other data, suppresses a selected communication during communication rate modification. A determination is made as to whether the transmission requires a change in data rate, and a switching circuit responds by engaging a different communication channel. Blocking circuitry blocks transmissions until the different data rate is established. This provides an optimum data rate, while preserving the integrity of the data transmitted.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: November 16, 2010
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 6965611
    Abstract: A subscriber unit which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been established selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the subscriber unit to reliably transport encoded data at a plurality of data rates without precise synchronization.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: November 15, 2005
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Publication number: 20040264401
    Abstract: A subscriber unit, used for communicating in voiced communications at a first data rate and communicating at a second data rate for other data, suppresses a selected communication during communication rate modification. A determination is made as to whether the transmission requires a change in data rate, and a switching circuit responds by engaging a different communication channel. Blocking circuitry blocks transmissions until the different data rate is established. This provides an optimum data rate, while preserving the integrity of the data transmitted.
    Type: Application
    Filed: May 24, 2004
    Publication date: December 30, 2004
    Applicant: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 6744781
    Abstract: A base station which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been established selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the base station to reliably transport encoded data at a plurality of data rates without precise synchronization.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: June 1, 2004
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 6741609
    Abstract: A method implemented by a subscriber unit for suppressing selective communications during communication rate modification, wherein the subscriber unit is coupled between first and the second communicating nodes, includes establishing a communication channel between the first and the second nodes at a first data rate; detecting a transmission from the first node on the channel; determining whether the transmission requires a change in data rates to a second data rate; switching the communication channel to the second data rate; and blocking transmissions from the second node until the second communication rate has been established.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: May 25, 2004
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 6741564
    Abstract: A method implemented by a base station for suppressing selective communications during communication rate modification, wherein the base station is coupled between first and said second communicating nodes, includes establishing a communication channel between said first and said second nodes at a first data rate; detecting a transmission from the first node on the channel; determining whether the transmission requires a change in data rates to a second data rate; switching the communication channel to said second data rate; and blocking transmissions from the second node until the second communication rate has been established.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: May 25, 2004
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 6608825
    Abstract: A CDMA communication system which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been completely established throughout the system selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the system to reliably transport encoded data at a plurality of data rates across a telecommunication system which may lack precise synchronization.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: August 19, 2003
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Publication number: 20020089976
    Abstract: A method implemented by a subscriber unit for suppressing selective communications during communication rate modification, wherein the subscriber unit is coupled between first and said second communicating nodes, includes establishing a communication channel between said first and said second nodes at a first data rate; detecting a transmission from the first node on the channel; determining whether the transmission requires a change in data rates to a second data rate; switching the communication channel to said second data rate; and blocking transmissions from the second node until the second communication rate has been established.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 11, 2002
    Applicant: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Publication number: 20020090000
    Abstract: A base station which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been established selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the base station to reliably transport encoded data at a plurality of data rates without precise synchronization.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 11, 2002
    Applicant: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Publication number: 20020089932
    Abstract: A method implemented by a base station for suppressing selective communications during communication rate modification, wherein the base station is coupled between first and said second communicating nodes, includes establishing a communication channel between said first and said second nodes at a first data rate; detecting a transmission from the first node on the channel; determining whether the transmission requires a change in data rates to a second data rate; switching the communication channel to said second data rate; and blocking transmissions from the second node until the second communication rate has been established.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 11, 2002
    Applicant: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Publication number: 20020085544
    Abstract: A subscriber unit which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been established selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the subscriber unit to reliably transport encoded data at a plurality of data rates without precise synchronization.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 4, 2002
    Applicant: InterDigital Technology Corporation
    Inventor: Michael J. Luddy
  • Patent number: 5953346
    Abstract: A CDMA communication system which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been completely established throughout the system selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the system to reliably transport encoded data at a plurality of data rates across a telecommunication system which may lack precise synchronization.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: September 14, 1999
    Assignee: InterDigital Technology Corporation
    Inventor: Michael J. Luddy