Patents by Inventor Moon Hwan Im

Moon Hwan Im 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: 8704744
    Abstract: Methods are disclosed to render image data over time. In one embodiment, a mapping from image data values to first and second sets of subpixels in a plurality of output frames uses brightness versus viewing angle performance measures to reduce color error when the image is viewed on the display panel at an off-normal viewing angle. In another embodiment, temporal subpixel rendering is used to improve the viewing angle in LCD displays or to improve subpixel rendering in other display technologies.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Moon Hwan Im, Thomas Lloyd Credelle, Matthew Osbourne Schlegel
  • Patent number: 8378947
    Abstract: Methods are disclosed to render image data over time. In one embodiment, a mapping from image data values to first and second sets of subpixels in a plurality of output frames uses brightness versus viewing angle performance measures to reduce color error when the image is viewed on the display panel at an off-normal viewing angle. In another embodiment, temporal subpixel rendering is used to improve the viewing angle in LCD displays or to improve subpixel rendering in other display technologies.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: February 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Moon Hwan Im, Thomas Lloyd Credelle, Mathew Osborne Schlegel
  • Patent number: 8228357
    Abstract: A display system (110) has a subpixel array (120) and a light source (140). In normal mode, image data (164) are processed by the display system to generate subpixel values (174) for the subpixels (130) and to generate a light source control value (BL) for the light source (140). In bypass mode suitable for testing new types of image-data processing, the subpixel values and the light source control value are generated by an external system (210) and are provided to the display system which is operated in bypass mode. The light source control value is not provided separately from the subpixel values but is encoded into some bits of the subpixel values for compatibility with older interfaces. The light source control value is encoded into the subpixel values' MSBs in case the subpixel values could be truncated. Other features are also provided.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon-Hwan Im, Seok-Jin Han, Sarah Sunyoung Hwang, Bai-Shuh Hsu
  • Patent number: 8159511
    Abstract: Sub-pixel rendering with gamma adjustment allows the luminance for the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel, while the chrominance can match the linear response of the human eye's chrominance channels. The gamma correction allows the sub-pixel rendering to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques with gamma adjustment may be optimized for the gamma transfer curve of a display device in order to improve response time, dot inversion balance, and contrast.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: April 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Candice Hellen Brown Elliott, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Francis Higgins, Paul Higgins
  • Publication number: 20110157217
    Abstract: Sub-pixel rendering with gamma adjustment allows the luminance for the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel, while the chrominance can match the linear response of the human eye's chrominance channels. The gamma correction allows the sub-pixel rendering to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques with gamma adjustment may be optimized for the gamma transfer curve of a display device in order to improve response time, dot inversion balance, and contrast.
    Type: Application
    Filed: June 28, 2010
    Publication date: June 30, 2011
    Inventors: Candice Hellen BROWN ELLIOTT, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Francis Higgins, Paul Higgins
  • Patent number: 7911487
    Abstract: Sub-pixel rendering with gamma adjustment allows the luminance of the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel. For each of a subset of input sampled data indicating a region of an input image, a gamma-adjusted data value is generated for each input image data value in the subset using a local average of at least two input image data values. A sub-pixel rendering operation uses the subset of gamma-adjusted data values and the subset of input image data values to produce an output data value for each sub-pixel element on the display panel. A plurality of output data values collectively indicates an output image. The gamma adjustment allows the sub-pixel rendering to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques with gamma adjustment may improve image contrast in high spatial frequency portions of an image.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: March 22, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Candice Helen Brown Elliott, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Francis Higgins, Paul Higgins
  • Publication number: 20110025733
    Abstract: A display system (110) has a subpixel array (120) and a light source (140). In normal mode, image data (164) are processed by the display system to generate subpixel values (174) for the subpixels (130) and to generate a light source control value (BL) for the light source (140). In bypass mode suitable for testing new types of image-data processing, the subpixel values and the light source control value are generated by an external system (210) and are provided to the display system which is operated in bypass mode. The light source control value is not provided separately from the subpixel values but is encoded into some bits of the subpixel values for compatibility with older interfaces. The light source control value is encoded into the subpixel values' MSBs in case the subpixel values could be truncated. Other features are also provided.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Inventors: Moon-Hwan IM, Seok Jin HAN, Sarah Sunyoung HWANG, Bai-Shuh HSU
  • Patent number: 7825921
    Abstract: The present application discloses a number of embodiments for the mapping of input image data onto display panels in which the subpixel data format being input may differ from the subpixel data format suitable for the display panel. Systems and methods are disclosed to map input image data onto panels with different ordering of subpixel data that the input, different number of subpixel data sets or different number of color primaries that the input image data.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok Jin Han, Bai-Shuh Hsu, Moon Hwan Im
  • Publication number: 20100026709
    Abstract: Sub-pixel rendering with gamma adjustment allows the luminance of the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel. For each of a subset of input sampled data indicating a region of an input image, a gamma-adjusted data value is generated for each input image data value in the subset using a local average of at least two input image data values. A sub-pixel rendering operation uses the subset of gamma-adjusted data values and the subset of input image data values to produce an output data value for each sub-pixel element on the display panel. A plurality of output data values collectively indicates an output image. The gamma adjustment allows the sub-pixel rendering to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques with gamma adjustment may improve image contrast in high spatial frequency portions of an image.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 4, 2010
    Inventors: Candice Hellen Brown Elliott, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Francis Higgins, Paul Higgins
  • Patent number: 7283142
    Abstract: A color display having horizontal sub-pixel arrangements and layouts is disclosed. The display can include a plurality of a sub-pixel group. The sub-pixel group can have a plurality of sub-pixels wherein each sub-pixel has a height along a vertical axis and a width along a horizontal axis. The width of each sub-pixel is greater in length than its height in the sub-pixel group. The display also includes a column driver coupled to each sub-pixel in a column and a row driver coupled to each sub-pixel in a row of the sub-pixel group. Each sub-pixel in the sub-pixel group is coupled to the row driver along the width of the sub-pixel.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: October 16, 2007
    Assignee: Clairvoyante, Inc.
    Inventors: Thomas Lloyd Credelle, Candice Hellen Brown Elliott, Moon Hwan Im
  • Publication number: 20070206013
    Abstract: Sub-pixel rendering with gamma adjustment allows the luminance of the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel. For each of a subset of input sampled data indicating a region of an input image, a gamma-adjusted data value is generated for each input image data value in the subset using a local average of at least two input image data values. A sub-pixel rendering operation uses the subset of gamma-adjusted data values and the subset of input image data values to produce an output data value for each sub-pixel element on the display panel. A plurality of output data values collectively indicates an output image. The gamma adjustment allows the sub-pixel rendering to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques with gamma adjustment may improve image contrast in high spatial frequency portions of an image.
    Type: Application
    Filed: May 11, 2007
    Publication date: September 6, 2007
    Applicant: CLAIRVOYANTE, INC
    Inventors: Candice Brown Elliott, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Higgins, Paul Higgins
  • Patent number: 7248271
    Abstract: System and methods are disclosed for improving the off-normal axis viewing angle by applying different filters if one colored sub-pixel data is driven close to 100% luminance while other colored sub-pixel data is driven close to 50% luminance values. Systems and methods for adjusting the viewing characteristics of the display system are also disclosed.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: July 24, 2007
    Assignee: Clairvoyante, Inc
    Inventors: Thomas Lloyd Credelle, Moon Hwan Im
  • Patent number: 7221381
    Abstract: The gamma adjustment allows the luminance for the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel, while the chrominance can match the linear response of the human eye's chrominance channels. The gamma correction allows the algorithms to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques disclosed with gamma adjustment can be optimized for a display device gamma to improve response time, dot inversion balance, and contrast because gamma correction and compensation of the sub-pixel rendering algorithm provides the desired gamma through sub-pixel rendering. These techniques can adhere to any specified gamma transfer curve.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: May 22, 2007
    Assignee: Clairvoyante, Inc
    Inventors: Candice Hellen Brown Elliott, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Francis Higgins, Paul Higgins
  • Publication number: 20070052721
    Abstract: Methods are disclosed to render image data over time. In one embodiment, a mapping from image data values to first and second sets of subpixels in a plurality of output frames uses brightness versus viewing angle performance measures to reduce color error when the image is viewed on the display panel at an off-normal viewing angle. In another embodiment, temporal subpixel rendering is used to improve the viewing angle in LCD displays or to improve subpixel rendering in other display technologies.
    Type: Application
    Filed: August 7, 2006
    Publication date: March 8, 2007
    Applicant: Clairvoyante, Inc
    Inventors: Moon Hwan Im, Thomas Credelle, Matthew Schlegel
  • Patent number: 6917368
    Abstract: System and methods are disclosed for improving the off-normal axis viewing angle by applying different filters if one colored sub-pixel data is driven close to 100% luminance while other colored sub-pixel data is driven close to 50% luminance values. Systems and methods for adjusting the viewing characteristics of the display system are also disclosed.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: July 12, 2005
    Assignee: Clairvoyante, Inc.
    Inventors: Thomas Lloyd Credelle, Moon Hwan Im
  • Publication number: 20040196302
    Abstract: Systems and methods are disclosed to subpixel render source image data over time. Temporal subpixel rendering may be used to improve viewing angle in LCD displays or to improve subpixel rendering in other display technologies.
    Type: Application
    Filed: March 4, 2003
    Publication date: October 7, 2004
    Inventors: Moon Hwan Im, Thomas Lloyd Credelle, Matthew Osborne Schlegel
  • Publication number: 20040174375
    Abstract: System and methods are disclosed for improving the off-normal axis viewing angle by applying different filters if one colored sub-pixel data is driven close to 100% luminance while other colored sub-pixel data is driven close to 50% luminance values. Systems and methods for adjusting the viewing characteristics of the display system are also disclosed.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 9, 2004
    Inventors: Thomas Lloyd Credelle, Moon Hwan Im
  • Publication number: 20030117423
    Abstract: Various embodiments of three-color sub-pixel arrangements and architectures for display and the like are herein disclosed.
    Type: Application
    Filed: October 22, 2002
    Publication date: June 26, 2003
    Inventors: Candice Hellen Brown Elliott, Thomas Lloyd Credelle, Moon Hwan Im
  • Publication number: 20030103058
    Abstract: Thus, methods and systems for sub-pixel rendering with gamma adjustment are disclosed. The gamma adjustment allows the luminance for the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel, while the chrominance can match the linear response of the human eye's chrominance channels. The gamma correction allows the algorithms to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques disclosed with gamma adjustment can be optimized for a display device gamma to improve response time, dot inversion balance, and contrast because gamma correction and compensation of the sub-pixel rendering algorithm provides the desired gamma through sub-pixel rendering. These techniques can adhere to any specified gamma transfer curve.
    Type: Application
    Filed: May 17, 2002
    Publication date: June 5, 2003
    Inventors: Candice Hellen Brown Elliott, Seok Jin Han, Moon Hwan Im, In Chul Baek, Michael Francis Higgins, Paul Higgins
  • Publication number: 20030090581
    Abstract: A color display having horizontal sub-pizel arrangements and layouts is disclosed. The display can include a plurality of a sub-pixel group. The sub-pixel group can have a plurality of sub-pixels wherein each sub-pixel has a height along a vertical axis and a width along a horizontal axis. The width of each sub-pixel is greater in length than its height in the sub-pixel group. The display also includes a column driver coupled to each sub-pixel in a column and a row driver coupled to each sub-pixel in a row of the sub-pixel group. Each sub-pixel in the sub-pixel group is coupled to the row driver along the width of the sub-pixel.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 15, 2003
    Inventors: Thomas Lloyd Credelle, Candice Hellen Brown Elliott, Moon Hwan IM