Patents by Inventor Kalluri R. Sarma
Kalluri 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).
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Patent number: 10273020Abstract: A mounting apparatus configured to mount a personal electronic device (PED) in an aircraft flight deck and provide a visible indication on the PED display when a fault condition exists includes an optical sensor positioned to view the PED display and configured to record an image of the PED display; an optically transparent surface configured to be overlaid on the PED display; an actuatable covering on the surface wherein the actuatable covering has a first optically transparent state and a second optically emissive state; an excitation source configured to cause the covering to switch from the first state to the second state; and a controller configured to transmit an image of the PED display recorded by the optical sensor to a server and command, responsive to receipt of an enable signal from the server, the actuation source to actuate the covering to indicate that the fault condition exists.Type: GrantFiled: March 13, 2018Date of Patent: April 30, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Richard Berckefeldt, Willard R. True, Kalluri R. Sarma
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Patent number: 10089927Abstract: An improved AM OLED pixel circuit and method of wide dynamic range dimming for AM OLED displays are disclosed that maintain color balance throughout the dimming range, and also maintain the uniformity of the luminance and chromaticity of the display at low gray-levels as the display is dimmed to lower luminance values. As such, AM OLED displays can meet the stringent color/dimming specifications required for existing and future avionics, cockpit, and hand-held military device display applications. Essentially, the OLED pixel circuit and method of dimming that are disclosed use Pulse Width Modulation (PWM) of the OLED pixel current to achieve the desired display luminance. Two example circuits are disclosed that externally PW modulate the common cathode voltage or common power supply voltage to modulate the OLED current in order to achieve the desired display luminance.Type: GrantFiled: October 3, 2016Date of Patent: October 2, 2018Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Kalluri R. Sarma, Jerry A. Roush, John Schmidt
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Patent number: 9769438Abstract: A hybrid projection display system that provides image quality superior to that of a traditional projection display system is provided. The provided hybrid projection display system flexibly supports arbitrary screen sizes and non-planar screen surfaces.Type: GrantFiled: September 1, 2015Date of Patent: September 19, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Robert E De Mers, L S Lamberth, Jr., Brent D. Larson, Kalluri R. Sarma
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Publication number: 20170064267Abstract: A hybrid projection display system that provides image quality superior to that of a traditional projection display system is provided. The provided hybrid projection display system flexibly supports arbitrary screen sizes and non-planar screen surfaces.Type: ApplicationFiled: September 1, 2015Publication date: March 2, 2017Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Robert E De Mers, L S Lamberth, JR., Brent D. Larson, Kalluri R. Sarma
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Publication number: 20170025064Abstract: An improved AM OLED pixel circuit and method of wide dynamic range dimming for AM OLED displays are disclosed that maintain color balance throughout the dimming range, and also maintain the uniformity of the luminance and chromaticity of the display at low gray-levels as the display is dimmed to lower luminance values. As such, AM OLED displays can meet the stringent color/dimming specifications required for existing and future avionics, cockpit, and hand-held military device display applications. Essentially, the OLED pixel circuit and method of dimming that are disclosed use Pulse Width Modulation (PWM) of the OLED pixel current to achieve the desired display luminance. Two example circuits are disclosed that externally PW modulate the common cathode voltage or common power supply voltage to modulate the OLED current in order to achieve the desired display luminance.Type: ApplicationFiled: October 3, 2016Publication date: January 26, 2017Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Kalluri R. Sarma, Jerry A. Roush, John Schmidt
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Patent number: 9489886Abstract: An improved AM OLED pixel circuit and method of wide dynamic range dimming for AM OLED displays are disclosed that maintain color balance throughout the dimming range, and also maintain the uniformity of the luminance and chromaticity of the display at low gray-levels as the display is dimmed to lower luminance values. As such, AM OLED displays can meet the stringent color/dimming specifications required for existing and future avionics, cockpit, and hand-held military device display applications. Essentially, the OLED pixel circuit and method of dimming that are disclosed use Pulse Width Modulation (PWM) of the OLED pixel current to achieve the desired display luminance. Two example circuits are disclosed that externally PW modulate the common cathode voltage or common power supply voltage to modulate the OLED current in order to achieve the desired display luminance.Type: GrantFiled: April 22, 2008Date of Patent: November 8, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Kalluri R. Sarma, Jerry A. Roush, John Schmidt
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Publication number: 20160091715Abstract: A system and method of displaying a conformal-capable head-up display image is provided. Distortions caused by combiner curvature, for example, are removed by pre-distorting and projecting separate images for each eye. Shutter-based eyewear controls the visibility as the imagery is cycled, e.g., shuttered, between left and right eyes. The combined image generator, projector and eyewear system maintains minimal vergence errors, minimal dipvergence errors, acceptable average transmittance, and optionally, high conformality.Type: ApplicationFiled: September 29, 2014Publication date: March 31, 2016Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Kalluri R. Sarma
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Publication number: 20160003985Abstract: Apparatus for a smudge-resistant structure and related fabrication methods are provided. An exemplary smudge-resistant structure includes a transparent substrate having a macrostructured surface configured to reduce contact with the transparent substrate and an oxidizing layer overlying the macrostructured surface.Type: ApplicationFiled: July 1, 2014Publication date: January 7, 2016Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Kalluri R. Sarma, John F.L. Schmidt
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Patent number: 9013562Abstract: Methods and systems are provided for presenting content comprising a plurality of frames using display panel comprising an array of display elements. A method comprises transferring image data for a first frame of the plurality of frames to a display element at the beginning of a first frame interval and activating an illumination assembly after transferring image data for the first frame to the display element to present the first frame. The method further comprises transferring image data for a second frame to an energy storage element corresponding to the display element during the first frame interval, and deactivating the illumination assembly prior to transferring the image data for the second frame from the energy storage element to the display element.Type: GrantFiled: June 18, 2010Date of Patent: April 21, 2015Assignee: Honeywell International Inc.Inventors: Kalluri R. Sarma, John F. L. Schmidt, Kanghua Lu
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Patent number: 9007350Abstract: A display assembly includes a flexible sheet. The flexible sheet is formed of a flexible material supporting a first display panel and a second display panel. A mechanism is operatively connected to the flexible sheet. The mechanism moves the flexible sheet from a first position in which said first display panel may be viewed to a second position in which said second display panel may be viewed.Type: GrantFiled: August 10, 2011Date of Patent: April 14, 2015Assignee: Honeywell International Inc.Inventors: Roger W. Burgin, Dave Pepitone, Kalluri R. Sarma
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Patent number: 8400391Abstract: Methods and systems for displaying an image on a display device having first and second light sources are provided. A video signal is provided to the display device. The video signal includes first and second video frames. Each video frame includes first and second sub-frames corresponding to the respective first and second light sources. The first light source is operated for a first duration during the first sub-frame of the first video frame. The first light source is operated for a second duration during the first sub-frame of the second video frame. The second duration is different from the first duration.Type: GrantFiled: January 10, 2008Date of Patent: March 19, 2013Assignee: Honeywell International Inc.Inventors: John Schmidt, Kalluri R. Sarma, Dennis M. Davey
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Publication number: 20130038584Abstract: A display assembly includes a flexible sheet. The flexible sheet is formed of a flexible material supporting a first display panel and a second display panel. A mechanism is operatively connected to the flexible sheet. The mechanism moves the flexible sheet from a first position in which said first display panel may be viewed to a second position in which said second display panel may be viewed.Type: ApplicationFiled: August 10, 2011Publication date: February 14, 2013Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Roger W. Burgin, Dave Pepitone, Kalluri R. Sarma
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Patent number: 8269212Abstract: A pixel for an organic light emitting diode (OLED) display and a method for forming such a pixel is provided. The pixel includes a substrate, a transistor formed over the substrate, and an OLED formed over the substrate. The transistor includes a gate, a source, and a drain. The OLED includes an anode, an emissive layer formed over the anode, and a cathode formed over the emissive layer. The cathode is electrically connected to the drain of the transistor.Type: GrantFiled: April 29, 2009Date of Patent: September 18, 2012Assignee: Honeywell International Inc.Inventor: Kalluri R. Sarma
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Patent number: 8259043Abstract: Apparatus, systems, and methods are provided for controlling the luminance of a display. One apparatus includes a pre-charge circuit configured to supply a pre-charge voltage to a column of LED pixels, a programming circuit configured to supply current to the column, and a switch configured to selectively couple the pre-charge circuit or the programming circuit to the column. A system includes an array of LED pixels arranged in a plurality of columns. A plurality of pre-charge circuits, each configured to selectively supply a pre-charge voltage to at least one column of pixels, and a plurality of current sources, each configured to selectively supply current to at least one column of pixels are also included. One method includes determining a pre-charge voltage for each of a plurality of columns based on a target luminance level selected from the plurality of luminance levels and supplying the determined pre-charge voltages to the columns.Type: GrantFiled: June 7, 2007Date of Patent: September 4, 2012Assignee: Honeywell International Inc.Inventors: John F. L. Schmidt, Kalluri R. Sarma, Jerry A. Roush
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Patent number: 8243006Abstract: Methods and systems for displaying an image on a display device having first and second light sources are provided. A video signal is provided to the display device. The video signal includes a plurality of frames, and each frame includes first and second sub-frames corresponding to the respective first and second light sources. The first light source is operated for a first duration during the first sub-frame of each of the plurality of frames. The second light source is operated for a second duration during the second sub-frame of each of the plurality of frames. The second duration is different than the first duration.Type: GrantFiled: November 16, 2007Date of Patent: August 14, 2012Assignee: Honeywell International Inc.Inventors: Kalluri R. Sarma, John F. L. Schmidt, Dennis M. Davey
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Publication number: 20120140125Abstract: An overhead visor display system for an aircraft cockpit includes one or more transparent OLED visors. The visor may display text and images, such as aircraft flight or system data, navigational data, conformal images of actual views outside the aircraft, or may function as a sun shade. The visor may be rotated up towards the ceiling of the cockpit out of view. Optionally, the visors may be moved by a pilot on a rail from one side window to the front windscreen, and to the other side window.Type: ApplicationFiled: December 3, 2010Publication date: June 7, 2012Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Dave Pepitone, Kalluri R. Sarma, Sandy Wyatt
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Publication number: 20110310234Abstract: Methods and systems are provided for presenting content comprising a plurality of frames using display panel comprising an array of display elements. A method comprises transferring image data for a first frame of the plurality of frames to a display element at the beginning of a first frame interval and activating an illumination assembly after transferring image data for the first frame to the display element to present the first frame. The method further comprises transferring image data for a second frame to an energy storage element corresponding to the display element during the first frame interval, and deactivating the illumination assembly prior to transferring the image data for the second frame from the energy storage element to the display element.Type: ApplicationFiled: June 18, 2010Publication date: December 22, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Kalluri R. Sarma, John F.L. Schmidt, Kanghua Lu
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Patent number: 8063856Abstract: An active matrix display includes an annealed flexible dielectric substrate, a thin-film-transistor (TFT), a pixel electrode, and an interconnect. The annealed substrate includes at least a first surface and a second surface. The TFT is formed on the annealed flexible dielectric substrate first surface. The pixel electrode is formed on the annealed flexible dielectric substrate first surface. The interconnect is formed on the annealed flexible dielectric substrate, and includes a conductor having an interconnect contact and a pixel electrode contact formed thereon. The interconnect contact is electrically coupled to the TFT, and the pixel contact is electrically coupled to the pixel electrode.Type: GrantFiled: December 14, 2007Date of Patent: November 22, 2011Assignee: Honeywell International Inc.Inventors: Kalluri R. Sarma, Charles Chanley
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Publication number: 20110242658Abstract: Methods and apparatus are provided for forming a smudge-resistant film structure that comprises a plurality of transparent inorganic surface structures overlying a transparent substrate. A method for forming the film structure comprises providing a transparent substrate and forming a plurality of transparent surface structures overlying the transparent substrate, wherein each of the transparent surface structures comprises an inorganic material.Type: ApplicationFiled: April 5, 2010Publication date: October 6, 2011Applicant: Honeywell International Inc.Inventor: Kalluri R. Sarma
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Patent number: 7956831Abstract: Apparatus, systems, and methods are provided for dimming pixels on an active matrix light-emitting diode display. One apparatus includes an LED couplable between a voltage source and ground. First and second pulse-width modulation (PWM) drivers are also coupled to the LED. A system includes a plurality of LEDs forming a plurality of rows coupled between a voltage source and ground. A plurality of PWM drivers, each coupled to each of the LEDs in one of the plurality of rows, and a global PWM driver coupled to each of the plurality of LEDs in each of the plurality of rows are also included. One method includes providing current to each LED of a row of LEDs for a first portion of a cycle via a PWM driver, and providing current to each LED in the row for a second portion of the cycle via a different PWM driver.Type: GrantFiled: May 30, 2007Date of Patent: June 7, 2011Assignee: Honeywell Interntional Inc.Inventors: Jerry A. Roush, Kalluri R. Sarma, John F. L. Schmidt