Patents by Inventor Athar Shah

Athar Shah 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: 7782940
    Abstract: Disclosed herein in one embodiment is an adaptive coding threshold algorithm for a videoconference system which alleviates problems due to the erroneous recoding of stationary areas of images caused by image noise. The algorithm, which is preferably implementable on a videoconference encoder, assesses the coding parameters for a current macroblock and the coding parameters for that same macroblock the last time it was coded. If for both macroblocks the coding was non-intra, with a [0,0] motion vector, and with a low quantization parameter, a determination is made that the current macroblock depicts a stationary image. Accordingly, the algorithm increases the coding threshold (T1) for the blocks within that macroblock, so that it becomes more difficult for those particular blocks to be recoded. This renders the block with stationary content less susceptible to erroneous recoding, while preserving system bandwidth and improving image quality.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: August 24, 2010
    Assignee: Polycom, Inc.
    Inventors: Mohammad Athar Shah, Michael J. Horowitz
  • Publication number: 20080267297
    Abstract: Described herein is a de-blocking filter arrangement for video encoders and decoders that include a de-blocking loop filter. In some embodiments, the post filter may be configured to process all edges that were not processed by the loop filter. In other embodiments the encoder may specify which edges should be processed by the loop filter and/or by the post filter. Also disclosed herein is a de-blocking filter arrangement for video encoders and decoders that include first and second de-blocking loop filters. The second loop filter is configured to operate only on slice boundaries that were not processed by the first loop filter, e.g., for one of the reasons described above.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 30, 2008
    Applicant: POLYCOM, INC.
    Inventors: Jesus Sampedro, Athar Shah, Stephen Botzko
  • Patent number: 7289562
    Abstract: A method for reducing or eliminating coding artifacts in video pictures processed using intra block prediction methods, for example, according to the H.264 standard. The causes of the coding artifacts are identified to be the intra prediction modes with prediction directions that are not in the direction of the raster scan. Filtering the affected blocks with a simple one-dimensional spatial filter will reduce or even eliminate these coding artifacts.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: October 30, 2007
    Assignee: Polycom, Inc.
    Inventors: Yong Yan, Michael Horowitz, Athar Shah, Richard Hall
  • Publication number: 20060262790
    Abstract: A method for encoding digital video with low delay for transport on a multi-channel QoS packet-switched network using multiple reference pictures with specially designated “key frames” to minimize the undesired effects of packet loss on video quality.
    Type: Application
    Filed: August 2, 2006
    Publication date: November 23, 2006
    Applicant: POLYCOM, INC.
    Inventors: MICHAEL HOROWITZ, RICK FLOTT, ATHAR SHAH, KEVIN RAPER
  • Patent number: 7136394
    Abstract: A method for encoding digital video with low delay for transport on a multi-channel QoS packet-switched network using multiple reference pictures with specially designated “key frames” to minimize the undesired effects of packet loss on video quality.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: November 14, 2006
    Assignee: Polycom, Inc.
    Inventors: Michael Horowitz, Rick Flott, Athar Shah, Kevin Raper
  • Publication number: 20050025236
    Abstract: A method for reducing or eliminating coding artifacts in video pictures processed using intra block prediction methods, for example, according to the H.264 standard. The causes of the coding artifacts are identified to be the intra prediction modes with prediction directions that are not in the direction of the raster scan. Filtering the affected blocks with a simple one-dimensional spatial filter will reduce or even eliminate these coding artifacts.
    Type: Application
    Filed: August 1, 2003
    Publication date: February 3, 2005
    Inventors: Yong Yan, Michael Horowitz, Athar Shah, Richard Hall
  • Publication number: 20020162280
    Abstract: A regulator assembly is provided that may be used as part of a door module. Attachment of the regulator components to the panel provides a convenient door module for attachment to a door. The regulator assembly may also be used for sunroofs. The assembly includes a glass support member for supporting a pane of glass or window. A drive motor produces a drive force for moving the glass support between open and closed positions. A flexible belt, such as a timing belt, includes a profile. The belt interconnects the drive motor and the glass support member. In a preferred embodiment, spaced apart brackets may be connected to a panel for supporting opposing end portions of the belt. A drive pulley has a complimentary profile to the profile of the belt. The drive pulley is connected to the drive motor with the drive pulley engaging the belt and movable relative thereto in response to the drive force.
    Type: Application
    Filed: May 1, 2001
    Publication date: November 7, 2002
    Inventor: Athar Shah
  • Publication number: 20020126668
    Abstract: A method for encoding digital video with low delay for transport on a multi-channel QoS packet-switched network using multiple reference pictures with specially designated “key frames” to minimize the undesired effects of packet loss on video quality.
    Type: Application
    Filed: March 12, 2002
    Publication date: September 12, 2002
    Inventors: Michael Horowitz, Rick Flott, Athar Shah, Kevin Raper
  • Patent number: 5936167
    Abstract: A simulator device for simulating the signature characteristics of a vehicle is provided which has a support structure to operably support a door assembly of a vehicle. A door actuating assembly is adjustably mounted to the support structure to operate the vehicle door assembly systems. The simulator device thereby cyclic tests the door assembly without the need for the door assembly to be installed on the vehicle.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: August 10, 1999
    Assignee: Chrysler Corporation
    Inventors: Richard C. Kulig, Louis J. Rich, Frank A. Mulso, Athar Shah, Robert Snyder, Gordon E. Segal, John L. Romanik, James K. Rafferty