Patents by Inventor Arun Shankar

Arun Shankar 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: 20100284464
    Abstract: Several techniques aimed at reducing computational complexity when encoding uses bi-predictively encoded frames (B-frames) are implemented in a video encoder. In an embodiment, B-frames are not used as reference frames for encoding P-frames and other B-frames. Non-use of B-frames allows a de-blocking filter used in the video encoder to be switched off when reconstructing encoded B-frames, and use of a lower complexity filter for fractional-resolution motion search for B-frames. In another embodiment, cost functions used in motion estimation for B-frames are simplified to reduce computational complexity. In one more embodiment, fractional pixel refinement in motion search for B-frames is simplified. In yet another embodiment, predictors used in motion estimation for a macro-block in a P-frame are selected from a B-frame that uses a same reference frame as the P-frame.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 11, 2010
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Soyeb Nagori, Arun Shankar Kudana, Pramod Kumar Swami
  • Publication number: 20100227301
    Abstract: Disclosed are methods and apparatus for extracting information from one or more documents. A training and execution plan is received, and such plan specifies invocation of a trainer operator for initiating training of a trainee operator based on a set of training documents so as to generate a new trained operator that is to then be invoked so as to extract information from one or more unknown documents. The trainee operator is configured to extract information from one or more unknown documents, and each training document is associated with classified information. After receipt of the training and execution plan, the trainer operator is automatically executed to train the trainee operator based on the specified training documents so as to generate a new trained operator for extracting information from documents. The new trained operator is a new version of the trainee operator.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 9, 2010
    Applicant: YAHOO! INC.
    Inventors: Cong Yu, Mridul Muralidharan, Arun Shankar Iyer, Philip Lewis Bohannon
  • Publication number: 20100002944
    Abstract: Several methods and a system to perform determination of a field referencing pattern are disclosed. In one aspect, a method is disclosed. A motion vector of a previously coded frame is analyzed using a processor and a memory. A statistic is updated based on whether the motion vector includes one or more of a fractional pel vertical component, a half pel vertical component, and an integer pel vertical component. A field referencing pattern of a target field is determined based on the statistic and an exception protocol.
    Type: Application
    Filed: May 14, 2009
    Publication date: January 7, 2010
    Inventors: Arun Shankar Kudana, Soyeb Nagori
  • Publication number: 20090180539
    Abstract: This invention enables determination of the best video encoding mode for a macroblock in the SKIP mode and comparing this cost with other modes. This invention avoids sub-pixel interpolations for fractional pixels. This invention models the cost function in a quadratic model and computes the cost for a nearest integer pel and plural adjacent integer pels. This permits determination of the coefficients of the quadratic model. An estimated cost is obtained using the actual fractional pel position in the quadratic model. This method can be used for obtaining the cost of a P Skip mode. This method can be used for the decision of B direct or B skip modes in B frames.
    Type: Application
    Filed: January 12, 2009
    Publication date: July 16, 2009
    Inventors: Arun Shankar Kudana, Soyeb N. Nagori, Ajit Venkat Rao, Manoj Koul