Patents by Inventor David M. Hoffman

David M. Hoffman 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).

  • Publication number: 20210110755
    Abstract: A method of image processing, the method including performing linear processing of an input data signal encoded with a nonlinear function to generate a linear representation of the input data signal including linearized image data, and using an integrated circuit to generate a processed linear image by nonlinearly quantizing the linearized image data to generate nonlinear quantized data, generating a memory address based on the nonlinear quantized data, and accessing a lookup table based on the generated memory address.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventor: David M. Hoffman
  • Patent number: 10872553
    Abstract: A method of image processing, the method including performing linear processing of an input data signal encoded with a nonlinear function to generate a linear representation of the input data signal including linearized image data, and using an integrated circuit to generate a processed linear image by nonlinearly quantizing the linearized image data to generate nonlinear quantized data, generating a memory address based on the nonlinear quantized data, and accessing a lookup table based on the generated memory address.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: December 22, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: David M. Hoffman
  • Publication number: 20190251889
    Abstract: A method of image processing, the method including performing linear processing of an input data signal encoded with a nonlinear function to generate a linear representation of the input data signal including linearized image data, and using an integrated circuit to generate a processed linear image by nonlinearly quantizing the linearized image data to generate nonlinear quantized data, generating a memory address based on the nonlinear quantized data, and accessing a lookup table based on the generated memory address.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Inventor: David M. Hoffman
  • Patent number: 10297191
    Abstract: A method of power control of a display system, the method including receiving dynamic metadata corresponding to input image data, determining a panel load level of the display system based on the dynamic metadata, and applying a first net power control (NPC) function to the display system during a first scene based on the panel load level.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: May 21, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: David M. Hoffman
  • Patent number: 10283032
    Abstract: A method of image processing, the method including performing linear processing of an input data signal encoded with a nonlinear function to generate a linear representation of the input data signal including linearized image data, and using an integrated circuit to generate a processed linear image by nonlinearly quantizing the linearized image data to generate nonlinear quantized data, generating a memory address based on the nonlinear quantized data, and accessing a lookup table based on the generated memory address.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: May 7, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: David M. Hoffman
  • Patent number: 10114510
    Abstract: A display device includes: an optical sensing array to detect light; a backlight to emit light toward a surface of the display device; and a thin optical film layer at the surface of the display device, the thin optical film layer being configured to, while a first shear force is being applied at a first point of contact at the surface of the display device, reflect light having a first wavelength at a front area ahead of the first point of contact in a direction of the first shear force, and reflect light having a second wavelength at a back area behind the first point of contact opposite the front area, the first wavelength being different from the second wavelength.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: October 30, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: David M. Hoffman, Jennifer J. Galela, Jiuzhi Xue
  • Patent number: 10109228
    Abstract: In a method of attenuating image brightness in a high dynamic range (HDR) display device, the method includes: receiving, by a processor, an incoming data stream comprising image data; detecting, by the processor, a trigger for attenuating a brightness level of a first image corresponding to the image data; generating, by the processor, output image data for a second image based on the first image, wherein the second image has a different average brightness level than the first image; and displaying, by the processor, the second image on the HDR display device.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: October 23, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: David M. Hoffman, David Zamora
  • Patent number: 9977543
    Abstract: A display device includes: a pixel array including a plurality of pixels; a plurality of infrared (IR) emitters to emit IR light towards a surface of the display device; a plurality of IR detectors to detect IR light; a deformable layer on the pixels, on the IR emitters, on the IR detectors, and at the surface of the display device; and a plurality of tracers at the deformable layer to reflect the IR light emitted by the IR emitters towards the IR detectors and to, while a shear force is being applied at a point of contact at the surface of the display device, shift ones of the tracers around the point of contact in a direction of the shear force such that IR reflectance at the surface of the display device is changed.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: May 22, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: David M. Hoffman
  • Patent number: 9804692
    Abstract: In a stylus for a display device, the stylus includes: a bearing housing; a roller in the bearing housing; and a first actuator coupled to the bearing housing and configured to apply a pressure against the roller to modulate a friction between the stylus and the roller.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 31, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: David M. Hoffman, Wei Xiong
  • Patent number: 9736467
    Abstract: A stereoscopic display includes: a sensor configured to detect head roll of a viewer; and an image renderer coupled to the sensor and configured to adjust a 3D image according to the detected head roll.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: August 15, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: David M. Hoffman, Richard I. McCartney
  • Publication number: 20170221413
    Abstract: A method of power control of a display system, the method including receiving dynamic metadata corresponding to input image data, determining a panel load level of the display system based on the dynamic metadata, and applying a first net power control (NPC) function to the display system during a first scene based on the panel load level.
    Type: Application
    Filed: August 17, 2016
    Publication date: August 3, 2017
    Inventor: David M. Hoffman
  • Publication number: 20170103691
    Abstract: A method of image processing, the method including performing linear processing of an input data signal encoded with a nonlinear function to generate a linear representation of the input data signal including linearized image data, and using an integrated circuit to generate a processed linear image by nonlinearly quantizing the linearized image data to generate nonlinear quantized data, generating a memory address based on the nonlinear quantized data, and accessing a lookup table based on the generated memory address.
    Type: Application
    Filed: May 5, 2016
    Publication date: April 13, 2017
    Inventor: David M. Hoffman
  • Patent number: 9520510
    Abstract: A detector to detect light of a wavelength range and an incidence angle range, the detector including a substrate, a plurality of dielectric structures on the substrate, each one of the plurality of dielectric structures being to receive light through a side of the dielectric structure opposite the substrate, and a plurality of conductive structures on the substrate, consecutive conductive structures of the plurality of conductive structures having a corresponding dielectric structure of the plurality of dielectric structures therebetween, wherein the consecutive conductive structures and the corresponding dielectric structure form a cavity to induce an absorption resonance in response to receiving the light of the wavelength range.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: December 13, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jiuzhi Xue, Krishna C. Balram, David M. Hoffman
  • Publication number: 20160300537
    Abstract: In a method of attenuating image brightness in a high dynamic range (HDR) display device, the method includes: receiving, by a processor, an incoming data stream comprising image data; detecting, by the processor, a trigger for attenuating a brightness level of a first image corresponding to the image data; generating, by the processor, output image data for a second image based on the first image, wherein the second image has a different average brightness level than the first image; and displaying, by the processor, the second image on the HDR display device.
    Type: Application
    Filed: December 30, 2015
    Publication date: October 13, 2016
    Inventors: David M. Hoffman, David Zamora
  • Publication number: 20160042676
    Abstract: A display including a light emitting display panel; an optical layer on the display panel including: a waveguide; and a light coupling component in the waveguide; a detector optically coupled to the waveguide; and an on-board calibration unit electrically coupled to the detector and configured to modify the output of the light emitting display panel based on a measurement made by the detector.
    Type: Application
    Filed: July 27, 2015
    Publication date: February 11, 2016
    Inventors: Brian H. Berkeley, David M. Hoffman, Jiuzhi Xue
  • Publication number: 20150379772
    Abstract: A display system includes: a sensor to detect head movements and to generate sensor data corresponding to the head movements; and a display device to display a first portion of an image according to the sensor data, wherein the first portion is smaller than an entirety of the image.
    Type: Application
    Filed: May 5, 2015
    Publication date: December 31, 2015
    Inventor: David M. Hoffman
  • Publication number: 20150277596
    Abstract: In a stylus for a display device, the stylus includes: a bearing housing; a roller in the bearing housing; and a first actuator coupled to the bearing housing and configured to apply a pressure against the roller to modulate a friction between the stylus and the roller.
    Type: Application
    Filed: March 16, 2015
    Publication date: October 1, 2015
    Inventors: David M. Hoffman, Wei Xiong
  • Publication number: 20150242056
    Abstract: A display device includes: a pixel array including a plurality of pixels; a plurality of infrared (IR) emitters to emit IR light towards a surface of the display device; a plurality of IR detectors to detect IR light; a deformable layer on the pixels, on the IR emitters, on the IR detectors, and at the surface of the display device; and a plurality of tracers at the deformable layer to reflect the IR light emitted by the IR emitters towards the IR detectors and to, while a shear force is being applied at a point of contact at the surface of the display device, shift ones of the tracers around the point of contact in a direction of the shear force such that IR reflectance at the surface of the display device is changed.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 27, 2015
    Inventor: David M. Hoffman
  • Publication number: 20150177909
    Abstract: A display device includes: an optical sensing array to detect light; a backlight to emit light toward a surface of the display device; and a thin optical film layer at the surface of the display device, the thin optical film layer being configured to, while a first shear force is being applied at a first point of contact at the surface of the display device, reflect light having a first wavelength at a front area ahead of the first point of contact in a direction of the first shear force, and reflect light having a second wavelength at a back area behind the first point of contact opposite the front area, the first wavelength being different from the second wavelength.
    Type: Application
    Filed: December 5, 2014
    Publication date: June 25, 2015
    Inventors: David M. Hoffman, Jennifer J. Galela, Jiuzhi Xue
  • Publication number: 20150155400
    Abstract: A detector to detect light of a wavelength range and an incidence angle range, the detector including a substrate, a plurality of dielectric structures on the substrate, each one of the plurality of dielectric structures being to receive light through a side of the dielectric structure opposite the substrate, and a plurality of conductive structures on the substrate, consecutive conductive structures of the plurality of conductive structures having a corresponding dielectric structure of the plurality of dielectric structures therebetween, wherein the consecutive conductive structures and the corresponding dielectric structure form a cavity to induce an absorption resonance in response to receiving the light of the wavelength range.
    Type: Application
    Filed: November 21, 2014
    Publication date: June 4, 2015
    Inventors: Jiuzhi Xue, Krishna C. Balram, David M. Hoffman