Patents by Inventor Dwadasi H. R. Sarma

Dwadasi H. R. Sarma 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: 9118911
    Abstract: A variable disparity three-dimensional (3D) display system and method of processing a variable disparity three-dimensional (3D) image shown on a display to reduce motion sickness of a person viewing the display. The system includes a motion detector configured to determine a motion value that characterizes motion of a display, and an image processor configured to adjust incrementally a disparity amount of a 3D image shown by the display based on the motion value in order to reduce motion sickness of a person viewing the display. The method includes determining a motion value that characterizes motion of a display, and adjusting a disparity amount of a 3D image shown by the display incrementally based on the motion value in order to reduce motion sickness of a person viewing the display.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: August 25, 2015
    Assignee: Delphi Technologies, Inc.
    Inventors: David K. Lambert, Frederick F. Kuhlman, Dwadasi H. R. Sarma
  • Patent number: 8977090
    Abstract: A contoured display that includes a faceplate configured to propagate an image in a collimated manner from an interface surface of the faceplate configured to receive the image from a display device to a display surface of the faceplate. The display surface is contoured to provide a three-dimensional (3D) contoured surface that provides designers with artistic freedom when designing a display shape, and a convenient way to contour a display surface to reduce the effects of glare on the display surface.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: March 10, 2015
    Assignee: Delphi Technologies, Inc.
    Inventors: David K. Lambert, Steven A. Liburdi, Dwadasi H. R. Sarma, Kris A. Stark, Gail M. Sylvester
  • Publication number: 20140218487
    Abstract: A variable disparity three-dimensional (3D) display system and method of processing a variable disparity three-dimensional (3D) image shown on a display to reduce motion sickness of a person viewing the display. The system includes a motion detector configured to determine a motion value that characterizes motion of a display, and an image processor configured to adjust incrementally a disparity amount of a 3D image shown by the display based on the motion value in order to reduce motion sickness of a person viewing the display. The method includes determining a motion value that characterizes motion of a display, and adjusting a disparity amount of a 3D image shown by the display incrementally based on the motion value in order to reduce motion sickness of a person viewing the display.
    Type: Application
    Filed: February 7, 2013
    Publication date: August 7, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: DAVID K. LAMBERT, FREDERICK F. KUHLMAN, DWADASI H. R. SARMA
  • Publication number: 20140147087
    Abstract: A contoured display that includes a faceplate configured to propagate an image in a collimated manner from an interface surface of the faceplate configured to receive the image from a display device to a display surface of the faceplate. The display surface is contoured to provide a three-dimensional (3D) contoured surface that provides designers with artistic freedom when designing a display shape, and a convenient way to contour a display surface to reduce the effects of glare on the display surface.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 29, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: DAVID K. LAMBERT, STEVEN A. LIBURDI, DWADASI H.R. SARMA, KRIS A. STARK, GAIL M. SYLVESTER
  • Publication number: 20140036075
    Abstract: A windshield display system that includes a light source such as a laser configured to project light from a plurality of source locations onto a desired location of a windshield. The number of source locations and relative spacing apart of the source locations is such that light emitted from the source locations and reflected into an eye of an operator is characterized as having a reflected light power less than a reflected power threshold.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Frederick F. Kuhlman, Dwadasi H.R. Sarma, David K. Lambert, Kris R. Stark
  • Patent number: 8553334
    Abstract: A heads-up display system is configured for use in a vehicle. The system includes a standard vehicle window (i.e. no special coatings), an image projector, and a vehicle dashboard equipped with a faceted reflective surface. The image projector is configured to project an image onto the faceted reflective surface. The faceted reflective surface is configured to reflect the image from the image projector onto a window surface of the standard vehicle window. The window surface is oriented to reflect the image from the faceted reflective surface toward an occupant. The faceted reflective surface may be disposed within a plurality of troughs separated by a plurality of diffuse reflecting partitions. The plurality of troughs may be configured to shield the occupant from extraneous reflections. The faceted reflective surface may include a plurality of electrically controlled facets. The plurality of electrically controlled reflective facets may be an array of electrowetting cells.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: October 8, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: David K. Lambert, Frederick F. Kuhlman, Dwadasi H. R. Sarma, Kris R. Stark, Michel F. Sultan, Gail M. Sylvester
  • Patent number: 8503088
    Abstract: A windshield display system for installation into a vehicle that includes a windshield, a transparent display overlaying the windshield, and an array of electrowetting lenses overlaying the transparent display. Each lens of the array is operable to a flat-state where light passes through the lens substantially undistorted, and a shaped-state where emitted light from an underlying portion of the transparent display is directed in order to increase an apparent brightness of the emitted light. The array selectively magnifies pixels or portions of the transparent display, while maintaining vision clarity for the operator in regions of the windshield where images are not being displayed. The array may also outline or highlight images being displayed with a region of distortion of surrounding the image to distort the view of the scene outside the vehicle to help the operator discern the image when the outside lighting conditions are less than ideal.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 6, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, David K. Lambert, Dwadasi H. R. Sarma, Kris R. Stark
  • Patent number: 8477401
    Abstract: A windshield assembly that includes a fluorescent electrowetting cell and an opaque electrowetting cell overlying a windshield and configured so the opaque electrowetting cell cooperates with the fluorescent electrowetting cell to contrast an image displayed by the fluorescent electrowetting cell with respect to a field of view beyond the windshield assembly. The ability to contrast the image makes the image easier to see when bright sunlight is present.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: July 2, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, David K. Lambert, Dwadasi H. R. Sarma, Kris R. Stark
  • Publication number: 20130163088
    Abstract: A windshield display system for installation into a vehicle that includes a windshield, a transparent display overlaying the windshield, and an array of electrowetting lenses overlaying the transparent display. Each lens of the array is operable to a flat-state where light passes through the lens substantially undistorted, and a shaped-state where emitted light from an underlying portion of the transparent display is directed in order to increase an apparent brightness of the emitted light. The array selectively magnifies pixels or portions of the transparent display, while maintaining vision clarity for the operator in regions of the windshield where images are not being displayed. The array may also outline or highlight images being displayed with a region of distortion of surrounding the image to distort the view of the scene outside the vehicle to help the operator discern the image when the outside lighting conditions are less than ideal.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: FREDERICK F. KUHLMAN, DAVID K. LAMBERT, DWADASI H. R. SARMA, KRIS R. STARK
  • Publication number: 20130148187
    Abstract: A windshield assembly that includes a fluorescent electrowetting cell and an opaque electrowetting cell overlying a windshield and configured so the opaque electrowetting cell cooperates with the fluorescent electrowetting cell to contrast an image displayed by the fluorescent electrowetting cell with respect to a field of view beyond the windshield assembly. The ability to contrast the image makes the image easier to see when bright sunlight is present.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 13, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: FREDERICK F. KUHLMAN, DAVID K. LAMBERT, DWADASI H. R. SARMA, KRIS R. STARK
  • Publication number: 20130120825
    Abstract: A heads-up display system is configured for use in a vehicle. The system includes a standard vehicle window (i.e. no special coatings), an image projector, and a vehicle dashboard equipped with a faceted reflective surface. The image projector is configured to project an image onto the faceted reflective surface. The faceted reflective surface is configured to reflect the image from the image projector onto a window surface of the standard vehicle window. The window surface is oriented to reflect the image from the faceted reflective surface toward an occupant. The faceted reflective surface may be disposed within a plurality of troughs separated by a plurality of diffuse reflecting partitions. The plurality of troughs may be configured to shield the occupant from extraneous reflections. The faceted reflective surface may include a plurality of electrically controlled facets. The plurality of electrically controlled reflective facets may be an array of electrowetting cells.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: DAVID K. LAMBERT, FREDERICK F. KUHLMAN, DWADASI H.R. SARMA, KRIS R. STARK, MICHEL F. SULTAN, GAIL M. SYLVESTER
  • Patent number: 8408765
    Abstract: A system, controller, and method for controlling a light distribution pattern. A light source and an electrowetting lens cooperate to vary a light distribution pattern of light from the light source. An object detector is used by a controller determine the location of an object and operate the electrowetting lens in order to control the light distribution pattern based on the location of the object. The electrowetting lens provides for faster redirecting of light toward an object when compared to mechanical based system. The light source may be an array of light emitting diodes to provide a reliable, energy efficient source of light.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: April 2, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, Dwadasi H. R. Sarma, Nasser Lukmani
  • Patent number: 8412413
    Abstract: A vehicle windshield display system for detecting obstruction of a vehicle operator's field of view by a windshield display. The system provides closed-loop feedback to perform a visual check of what is actually being displayed on a windshield display in order to avoid obstructing an operator's field of view. The system includes a windshield display configured to be installed into a vehicle and configured to display a graphic in a field of view of an operator of the vehicle, a camera configured to determine an image of the graphic displayed by the windshield display, and a controller configured to determine if the image indicates that field of view is obstructed. The camera is used to monitor the windshield display and provide feedback to the controller so that appropriate adjustments to the graphic being displayed can be made.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 2, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Kris R. Stark, Dwadasi H. R. Sarma, Frederick F. Kuhlman, Mark R. Vincen
  • Patent number: 8398282
    Abstract: A vehicle front lighting assembly, or headlight assembly, that includes one or more variable tint electrowetting elements overlying a portion of the assembly lens surface. The variable tint electrowetting element is configured to operate to a transparent state whereby the hue of light passing therethrough is not changed, and a tinted state where the hue of light passing therethrough is changed. Alternatively, the variable tint electrowetting element is configured to operate to the tinted state and an opaque state where light is blocked from passing through the electrowetting element. The assembly may use light emitting diodes (LED) as an alternative to more conventional light sources.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: March 19, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, Dwadasi H. R. Sarma, Nasser Lukmani
  • Patent number: 8379302
    Abstract: A system for controlling an infrared light distribution pattern that includes an electrowetting lens arranged proximate to an infrared light source, and operable to vary a distribution pattern of infrared light from the infrared light source into an area; an electrowetting shutter overlaying the electrowetting lens, and operable to an opaque state where infrared light from the infrared light source is blocked from projecting into at least a portion of the area, and operable to a transparent state where infrared light passes through the electrowetting shutter; an object detector configured to detect an object in the area; and a controller configured to receive a detection signal from the object detector, and operate the electrowetting lens and the electrowetting shutter in order to control the infrared light distribution pattern based on a location of the object. The pattern may be uniform or may be customized for the object being heated.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: February 19, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, Dwadasi H.R. Sarma, Nasser Lukmani
  • Patent number: 8362992
    Abstract: A dual view display system to display two different images in substantially opposite direction using a single transparent display to time-multiplex the images and shutter devices to alternately block each side from being viewed according to the image being displayed.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 29, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, Andres P. Harbach, Richard D. Parker, Dwadasi H. R. Sarma
  • Patent number: 8363325
    Abstract: A dual view display system that displays two different images in different directions using a single display device. The dual view display includes a first optical element overlaying a first portion of the pixels and configured to direct light emitted from the first portion of the pixels toward a first direction, a second optical element overlaying a second portion of the pixels and configured to direct light emitted from the second portion of the pixels toward a second direction distinct from the first direction, and an optical barrier arranged between the first optical element and the second optical element effective to prevent light from propagating therebetween.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: January 29, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Frederick F. Kuhlman, Andrew P. Harbach, Dwadasi H. R. Sarma, Michel F. Sultan
  • Publication number: 20120319016
    Abstract: A system for controlling an infrared light distribution pattern that includes an electrowetting lens arranged proximate to an infrared light source, and operable to vary a distribution pattern of infrared light from the infrared light source into an area; an electrowetting shutter overlaying the electrowetting lens, and operable to an opaque state where infrared light from the infrared light source is blocked from projecting into at least a portion of the area, and operable to a transparent state where infrared light passes through the electrowetting shutter; an object detector configured to detect an object in the area; and a controller configured to receive a detection signal from the object detector, and operate the electrowetting lens and the electrowetting shutter in order to control the infrared light distribution pattern based on a location of the object. The pattern may be uniform or may be customized for the object being heated.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 20, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: FREDERICK F. KUHLMAN, DWADASI H.R. SARMA, NASSER LUKMANI
  • Publication number: 20120287510
    Abstract: A transreflective vehicle mirror system configured to be attached to a vehicle. The system includes an interior unit and/or exterior unit, each of which includes various arrangements of a transreflective layer optionally combined with a transparent display layer and/or a variable tint layer. The units can be configured and operated in a variety of ways to provide the same and/or enhanced features/functions normally associated with conventional side view mirrors, rear view mirrors (with or without an integrated information display), fold down visors (with or without a vanity mirror), and graduated tinting commonly found on the upper portion of automobile windshields. The interior unit and exterior unit can operate to a transparent state so that a field of view or direction viewed by the operator is not obstructed as is the case with conventional rear and side view mirrors, and fold-down sun-visors.
    Type: Application
    Filed: May 12, 2011
    Publication date: November 15, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: FREDERICK F. KUHLMAN, DWADASI H.R. SARMA
  • Publication number: 20120287493
    Abstract: A system, controller, and method for controlling a light distribution pattern. A light source and an electrowetting lens cooperate to vary a light distribution pattern of light from the light source. An object detector is used by a controller determine the location of an object and operate the electrowetting lens in order to control the light distribution pattern based on the location of the object. The electrowetting lens provides for faster redirecting of light toward an object when compared to mechanical based system. The light source may be an array of light emitting diodes to provide a reliable, energy efficient source of light.
    Type: Application
    Filed: May 12, 2011
    Publication date: November 15, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: FREDERICK F. KUHLMAN, DWADASI H.R. SARMA, NASSER LUKMANI