Patents by Inventor Ramachandran Ramani

Ramachandran Ramani 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).

  • Bitrate control algorithm for video transcoding systems
    Patent number: 8588296
    Abstract: A video transcoding system and method employing an improved rate control algorithm. A plurality of frames in an input video bitstream are received by the system, in which each frame is in a first coding format. Each frame in the input bitstream is decoded, and complexity information indicating the complexity of the frame after decoding is obtained. An estimated number of bits to allocate for the respective frame is calculated. Using a rate estimation model that employs the complexity information for the respective frame, a picture cost for the frame is calculated based on the estimated number of bits allocated to encode the frame, and a parameter of the rate estimation model. A target cost for the respective frame is calculated based at least in part on the picture cost and the complexity information for the frame.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: November 19, 2013
    Assignee: Dialogic Corporation
    Inventors: Kyeong H. Yang, Ran Ding, Ramachandran Ramani
  • BITRATE CONTROL ALGORITHM FOR VIDEO TRANSCODING SYSTEMS
    Publication number: 20110002381
    Abstract: A video transcoding system and method employing an improved rate control algorithm. A plurality of frames in an input video bitstream are received by the system, in which each frame is in a first coding format. Each frame in the input bitstream is decoded, and complexity information indicating the complexity of the frame after decoding is obtained. An estimated number of bits to allocate for the respective frame is calculated. Using a rate estimation model that employs the complexity information for the respective frame, a picture cost for the frame is calculated based on the estimated number of bits allocated to encode the frame, and a parameter of the rate estimation model. A target cost for the respective frame is calculated based at least in part on the picture cost 10 and the complexity information for the frame.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 6, 2011
    Applicant: Dialogic Corporation
    Inventors: Kyeong H. Yang, Ran Ding, Ramachandran Ramani