Patents by Inventor Val A. Johnson

Val A. Johnson 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: 8026980
    Abstract: A system and method for improving decisions for 2D combing of a video. A 2D-comb is applied to a baseband video signal, thus producing a chroma component of the signal, and an associated combing error. A narrowband filter is applied to the chroma component to produce a filtered chroma component. The chroma component and the filtered chroma component are blended in proportions based on the amount of combing error to produce a new chroma component. A larger combing error induces selection or blending a larger portion of the filtered chroma component, which as a result of narrowband filtering contains less cross-chroma error. Subtracting the new chroma component from the baseband video signal produces a new luma component. The chroma component can also be filtered using a wider band filter to produce a non-complementary chroma component to be subtracted from the baseband video signal to produce the new luma component.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: September 27, 2011
    Assignee: Broadcom Corporation
    Inventors: Shawn Val Johnson, Brad Delanghe, Brian Schoner, Darren Neuman
  • Patent number: 7394502
    Abstract: Methods and systems for 2D comb filtering of a PAL video signal are provided. The method may comprise generating a plurality of interpolated pixels for corresponding video samples in non-adjacent pixel lines for a video frame. At least one direction of least bandwidth may be determined among the video samples and the interpolated pixels. The method may blend combing in the determined direction of least bandwidth. A plurality of interpolated pixels for corresponding video samples may be generated in a first pixel line of the video frame. The plurality of interpolated pixels in the first pixel line may be shifted, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: July 1, 2008
    Assignee: Broadcom Corporation
    Inventor: Shawn Val Johnson
  • Patent number: 7391479
    Abstract: Methods and systems for 3D bidirectional comb filtering of a video signal are provided. Aspects of the method may include generating a plurality of interpolated pixels for a current line, a next line and a previous line in a current frame. A plurality of interpolated pixels may be generated in a previous frame, which corresponds to the interpolated pixels in the current frame. A plurality of interpolated pixels may be generated in a next frame, which corresponds to the interpolated pixels in the current frame. At least one direction of least bandwidth may be determined among at least a portion of all the generated interpolated pixels and true pixels in the current frame. Combing may be blended according to the determined at least one direction of least bandwidth.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: June 24, 2008
    Assignee: Broadcom Corporation
    Inventor: Shawn Val Johnson
  • Publication number: 20080084507
    Abstract: A system and method for improving decisions for 2D combing of a video. A 2D-comb is applied to a baseband video signal, thus producing a chroma component of the signal, and an associated combing error. A narrowband filter is applied to the chroma component to produce a filtered chroma component. The chroma component and the filtered chroma component are blended in proportions based on the amount of combing error to produce a new chroma component. A larger combing error induces selection or blending a larger portion of the filtered chroma component, which as a result of narrowband filtering contains less cross-chroma error. Subtracting the new chroma component from the baseband video signal produces a new luma component. The chroma component can also be filtered using a wider band filter to produce a non-complementary chroma component to be subtracted from the baseband video signal to produce the new luma component.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 10, 2008
    Inventors: Shawn Val Johnson, Brad Delanghe, Brian Schoner, Darren Neuman
  • Patent number: 7339630
    Abstract: Methods and systems for correlation sharpening filtering of a composite video signal are provided. A correlation between a current pixel and at least one adjacent pixel may be determined. A plurality of chroma video signal components of a composite video signal may be blended based on the determined correlation. A luma video signal component may be determined based on the blended chroma video signal components. At least a portion of the plurality of chroma video signal components may be filtered, resulting in filtered chroma video signals. At least a portion of the plurality of chroma video signal components may be blended with the filtered chroma video signal based on the determined correlation. The blended at least a portion of the plurality of chroma video signal components may be removed from the composite video signal to obtain the luma video signal component.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: March 4, 2008
    Assignee: Broadcom Corporation
    Inventor: Shawn Val Johnson
  • Publication number: 20040098673
    Abstract: The system disclosed herein is an interface that allows the drafter of a technical document, such as a patent application, to keep both element names and reference numerals consistent throughout a text document and any accompanying documents, including drawings. The system creates and manages a global table of terms that may be edited globally and applied to both a text document and a drawing file. The system also provide for the examination and correction of a technical document that used element names and reference numerals to ensure consistency.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 20, 2004
    Inventors: Damian Mark Riddoch, Val A. Johnson, Brett Andrew Hansen
  • Patent number: 5450557
    Abstract: A self-contained, self-configurable cascadable pipelined processor chip (160) is diclosed. The chip contains a computation section (FIGS. 1a-1d) which consists of various types of computation circuits (20-42) that can be software-interconnected in any desired configuration by a set of multiplexers (44-52) whose settings are under the control of a control section (FIG. 2 ). The control section consists of various types of control circuits (60-76) which are also software-interconnectable in any desired configuration under program control. The chip (160) is configured by a very long instruction word and then executes the algorithm defined by that configuration iteratively until stopped. The chip (160) can be programmed to reconfigure itself in response to computation results or other selectable parameters, either in accordance with internally stored configurations or in accordance with configuration information stored in an external random access memory (56, 58).
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: September 12, 1995
    Assignee: Loral Aerospace Corp.
    Inventors: Randall L. Kopp, S. Val Johnson