Patents by Inventor Shawn Walters

Shawn Walters 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: 9071271
    Abstract: A digital radio frequency memory (DRFM) comprises a plurality of time interleaved analog to digital converters (ADCs) in cooperation with a plurality of time interleaved digital to analog converters (DACs) to provide an effective sampling rate which may be greater than the clock rate of the system. A higher sampling rate at the ADC increases instantaneous bandwidth, while a higher sampling rate at the DAC improves spectral purity. The ADCs and DACs are time interleaved by supplying a clock signal to each ADC/DAC which is skewed with respect to the previous and subsequent skewed signal. In order to process the higher effective sampling rate, a pre-computation of DAC values for each high rate sample is performed by an SDAC algorithm that pipelines the calculations of the processed sample values provided to the DAC. A DAC bias correction is provided to adjust for drift in the DACs.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: June 30, 2015
    Assignee: Lockheed Martin Corporation
    Inventors: Nathan E. Low, Shawn Walters
  • Publication number: 20150095152
    Abstract: Computerized systems and computerized methods are provided for social network connection-driven product promotion. Data is received from a first remote computing device indicative of a purchase of an offer from a merchant, wherein the data is associated with a user and includes a purchase price for the offer. A set of social network contacts of the user is determined. Data associated with a set of user accounts for one or more contacts is updated to include the offer from the merchant, so that a user associated with an updated user account is presented with the offer from the merchant. Second data is received from a second remote computing device indicative of a second purchase of the offer from the merchant. A credit for a portion of the purchase price is added to a user account to reduce the purchase price paid by the user.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 2, 2015
    Inventors: Andre Shawn WALTERS, Wayne Edwards NILSEN
  • Patent number: 8659453
    Abstract: A digital radio frequency memory (DRFM) comprises a plurality of time interleaved analog to digital converters (ADCs) in cooperation with a plurality of time interleaved digital to analog converters (DACs) to provide an effective sampling rate which may be greater than the clock rate of the system. A higher sampling rate at the ADC increases instantaneous bandwidth, while a higher sampling rate at the DAC improves spectral purity. The ADCs and DACs are time interleaved by supplying a clock signal to each ADC/DAC which is skewed with respect to the previous and subsequent skewed signal. In order to process the higher effective sampling rate, a pre-computation of DAC values for each high rate sample is performed by an SDAC algorithm that pipelines the calculations of the processed sample values provided to the DAC. A DAC bias correction is provided to adjust for drift in the DACs.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: February 25, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: Nathan E. Low, Shawn Walters
  • Publication number: 20100096377
    Abstract: Apparatus is provided for de-icing the door lock, wiper blades and door molding of a vehicle. The apparatus includes a lock heater, a wiper blade heater and a door molding heater, connectable to a power supply through thermostat switches and control switches. The apparatus also includes a controller for controlling supply of power to each of the lock heater, wiper blade heater and door molding heater. The controller closes or opens the control switches in response to commands received from a user input. The user input may comprise a remote control. The controller may also close or open the control switches based on the state of a timer, reset button and vehicle ignition system.
    Type: Application
    Filed: October 21, 2008
    Publication date: April 22, 2010
    Inventor: Shawn Walter ZUBRECKI
  • Publication number: 20060267368
    Abstract: A window assembly for a vehicle includes a window opening defined by a margin of material. The window assembly also includes a window having an adhesive member bonded on it prior to an installation operation on a vehicle. The adhesive member is further bonded to the margin of material when the window assembly is attached to the vehicle.
    Type: Application
    Filed: May 23, 2006
    Publication date: November 30, 2006
    Inventors: James Earl, Shawn Walters