Patents by Inventor Andrew I. Russell

Andrew I. Russell 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: 8705133
    Abstract: A display system and method of producing images with high dynamic range are provided. The display system employs multiple light valves for projecting a portion of the image onto another.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: April 22, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: David F. Lieb, Andrew I. Russell
  • Publication number: 20140022274
    Abstract: A display system and method of producing images with high dynamic range are provided. The display system employs multiple light valves for projecting a portion of the image onto another.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 23, 2014
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: David F. Lieb, Andrew I. Russell
  • Patent number: 8508672
    Abstract: A system for, and method of, improving video image sharpness and a continuous-light-emitting video display system employing the system or the method. In one embodiment, the system for improving video image sharpness includes: (1) a sub-frame generator configured to receive a frame of a video image and generate plural sub-frames therefrom and (2) a spatial filter, associated with the sub-frame generator and configured to cause the plural sub-frames to be spatially filtered with respect to one another based on a display sequence thereof.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: August 13, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Andrew I. Russell
  • Patent number: 8456494
    Abstract: Disclosed embodiments utilize MIP techniques to determine optimum bit sequences that minimize PWM artifacts. The problem would first be restructured and redefined into a form suitable for MIP. An objective function designed to minimize PWM artifacts would allow for evaluation of resulting bit sequences in order to determine optimality. Constraints (that relate the inputs and variables) are developed. These constraints would determine whether a particular bit sequence can be used on a given system, and whether a particular bit sequence would satisfy any user defined rules. Once these are determined, an MIP solver would generate an optimized bit sequence(s). Only bit sequences that satisfy the constraints would be evaluated using the objective function, allowing for a quicker determination of a solution. This MIP solution may be generated quickly, allowing for a shorter production period while still optimizing the bit sequences to minimize PWM artifacts.
    Type: Grant
    Filed: December 30, 2006
    Date of Patent: June 4, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Andrew I. Russell, Gregory J. Hewlett
  • Patent number: 7832870
    Abstract: According to one embodiment, a projection system includes a color wheel operable to filter light into a passed component and a reflected component. The projection system also includes a digital micromirror device comprising a plurality of micromirrors each operable to receive the passed component and the reflected component. Each micromirror is selectively positionable to direct, at approximately the same time, the passed component and the reflected component to desired locations. The projection system also includes an optical system operable to direct the passed component and the reflected component from the color wheel to the digital micromirror device at approximately the same time.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: November 16, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Gregory S. Pettitt, Andrew I. Russell, Bradley W. Walker
  • Publication number: 20080158262
    Abstract: Disclosed embodiments utilize MIP techniques to determine optimum bit sequences that minimize PWM artifacts. The problem would first be restructured and redefined into a form suitable for MIP. An objective function designed to minimize PWM artifacts would allow for evaluation of resulting bit sequences in order to determine optimality. Constraints (that relate the inputs and variables) are developed. These constraints would determine whether a particular bit sequence can be used on a given system, and whether a particular bit sequence would satisfy any user defined rules. Once these are determined, an MIP solver would generate an optimized bit sequence(s). Only bit sequences that satisfy the constraints would be evaluated using the objective function, allowing for a quicker determination of a solution. This MIP solution may be generated quickly, allowing for a shorter production period while still optimizing the bit sequences to minimize PWM artifacts.
    Type: Application
    Filed: December 30, 2006
    Publication date: July 3, 2008
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Andrew I. Russell, Gregory J. Hewlett
  • Publication number: 20080158431
    Abstract: A system for, and method of, improving video image sharpness and a continuous-light-emitting video display system employing the system or the method. In one embodiment, the system for improving video image sharpness includes: (1) a sub-frame generator configured to receive a frame of a video image and generate plural sub-frames therefrom and (2) a spatial filter, associated with the sub-frame generator and configured to cause the plural sub-frames to be spatially filtered with respect to one another based on a display sequence thereof.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Applicant: Texas Instruments Incorporated
    Inventor: Andrew I. Russell
  • Publication number: 20080007699
    Abstract: According to one embodiment, a projection system includes a color wheel operable to filter light into a passed component and a reflected component. The projection system also includes a digital micromirror device comprising a plurality of micromirrors each operable to receive the passed component and the reflected component. Each micromirror is selectively positionable to direct, at approximately the same time, the passed component and the reflected component to desired locations. The projection system also includes an optical system operable to direct the passed component and the reflected component from the color wheel to the digital micromirror device at approximately the same time.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 10, 2008
    Inventors: Gregory S. Pettitt, Andrew I. Russell, Bradley W. Walker
  • Publication number: 20070290962
    Abstract: According to one embodiment, a method for displaying an image in a light processing system includes receiving an image to be displayed. The method also includes generating a light from a light source. The method further includes receiving the light at a spatial light modulator having a group of pixels. The method further includes displaying the image along an optical path. The method further includes automatically defocusing the image by adjusting at least one of a group of optical elements along the optical path, thereby reducing pixel noise in the displayed image.
    Type: Application
    Filed: June 19, 2006
    Publication date: December 20, 2007
    Inventors: David C. Hutchison, Steven M. Penn, Andrew I. Russell
  • Patent number: 6665694
    Abstract: An input signal having a first sampling rate is converted to an output signal having a second sampling rate. This is done by obtaining an intermediate sampling value from the input signal and filtering the intermediate sampling value to obtain the output signal. The intermediate sampling value corresponds to a sample taken at the second sampling rate on a continuous-time representation of the input signal.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: December 16, 2003
    Assignee: Bose Corporation
    Inventors: Andrew I. Russell, Paul E. Beckmann