Patents by Inventor Preeti Dubey

Preeti Dubey 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: 9311897
    Abstract: Drive signals for a display device may be generated using Separable Non-negative Matrix Series Representation (SNMSR) of source image data and applying a nonnegative matrix factorization (NNMF) process to source image data to generate approximation image data (Ii), partial sum image data (Pi) and residue image data (Ji). Iteratively, NNMF may be applied to Ji such that subsequent Ii and Ji may be generated, where each Ii can be associated with a corresponding sub-frame image. At each iteration, the Ii may be sent to the display buffer for selective activation of multiple row and column drivers during a single sub-frame interval. At each iteration, a determination may be made if a predetermined criterion is satisfied. The iterations may be terminated and the series truncated when the predetermined criterion is satisfied. Integration of the sub-frame images displayed over a complete frame interval by human eye effectively corresponds to the source image.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: April 12, 2016
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY KANPUR
    Inventors: Venkatesh K. Subramanian, Preeti Dubey
  • Publication number: 20130127886
    Abstract: Drive signals for a display device may be generated using Separable Nonnegative Matrix Series Representation (SNMSR) of source image data and applying a non-negative matrix factorization (NNMF) process to source image data to generate approximation image data (Ii), partial sum image data (Pi) and residue image data (Ji). Iteratively, NNMF may be applied to Ji such that subsequent Ii and Ji may be generated, where each Ii can be associated with a corresponding sub-frame image. At each iteration, the Ii may be sent to the display buffer for selective activation of multiple row and column drivers during a single sub-frame interval. At each iteration, a determination may be made if a predetermined criterion is satisfied. The iterations may be terminated and the series truncated when the predetermined criterion is satisfied. Integration of the sub-frame images displayed over a complete frame interval by human eye effectively corresponds to the source image.
    Type: Application
    Filed: February 9, 2011
    Publication date: May 23, 2013
    Applicant: Indian Institute of Technology Kanpur
    Inventors: Venkatesh K. Subramanian, Preeti Dubey