Patents by Inventor Rajarathnam Nallusamy

Rajarathnam Nallusamy 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: 20130185780
    Abstract: This technology provides methods, non-transitory computer readable medium and apparatuses that generate a OneTime Password (OTP) such that no hardware token is used. The technology uses some functions and parameters generated and transmitted to the client machine, by the server. The server generates a token for each session, cyclic groups G1 and G2 of elements and sends this to client machine. The client generates a first OTP using a predefined function on the token and the hash value of user password, such that retrieving the hash value of the password from the first OTP is a discrete log problem. A second OTP is generated using a bilinear mapping on the first OTP, and an element of G1, such that generating first OTP from second OTP is a bilinear inverse problem.
    Type: Application
    Filed: June 25, 2012
    Publication date: July 18, 2013
    Applicant: INFOSYS LIMITED
    Inventors: Vijayaraghavan Varadharajan, Sivakumar Kuppusamy, Kanika Pasricha, Rajarathnam Nallusamy
  • Publication number: 20130156255
    Abstract: A method for performing transcoding resistant watermarking of digital media content is provided. The method enables obtaining a plurality of spectral frequency bands of the digital media content. The method further enables calculating an entropy value for each of the plurality of spectral frequency bands. The entropy value quantifies information in each of the plurality of spectral frequency bands. The method further enables selecting a spectral frequency band from amongst the plurality of spectral frequency bands based on the calculation. The selected spectral frequency band has the highest entropy. Furthermore, the method enables inserting a watermark in the selected spectral frequency band of the digital media content.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 20, 2013
    Applicant: INFOSYS LIMITED
    Inventors: Vijayaraghavan Varadharajan, Sagar Joglekar, Rajarathnam Nallusamy, Sanjoy Paul
  • Publication number: 20130143540
    Abstract: Embodiments of the present invention provide a mobile device comprising a core phone with a detachable primary device. The core phone transfers an incoming call alert to the detached primary device by synchronizing the display frame buffer of the core phone with the display frame buffer associated with the detached primary device. A plurality of remote secondary devices can be paired with the core phone on request by said secondary devices to transfer an incoming call alert to said plurality of secondary devices and establish a connection after authorization with said detached primary device. The detachable primary device is usable by pairing with the core phone when the core phone is not used directly but remains in the vicinity. Important data in the primary device is synchronized with the core phone to avoid data loss when the primary device is accidentally dropped or lost or damaged.
    Type: Application
    Filed: March 21, 2012
    Publication date: June 6, 2013
    Applicant: INFOSYS LIMITED
    Inventors: Sumit Kalra, Chinmoy Mukherjee, Rajarathnam Nallusamy
  • Publication number: 20130113999
    Abstract: A method, system and computer-readable media for detecting scene changes in a video that includes providing by one or more computing devices a plurality of passes through the video where a plurality of detected scenes from a first pass in a conventional method are identified and a second pass through the detected scenes are provided by the computing device. A plurality of scene boundary differences corresponding to the detected scenes, a fixed average, and a varying average are computed by the computing device. The scene boundary difference is compared with the fixed average and the varying average and if the scene boundary difference is less than the fixed average and the varying average, the detected scenes are combined else the detected scene being an abrupt scene change is determined. The steps of computing a varying average to combining the detected scenes are repeated by the computing device.
    Type: Application
    Filed: November 3, 2011
    Publication date: May 9, 2013
    Applicant: INFOSYS TECHNOLOGIES, LTD.
    Inventors: Aditya Vashistha, Rajarathnam Nallusamy, Sanjoy Paul
  • Patent number: 8379911
    Abstract: A method for watermarking of video content is provided. An averaged scene image is computed for each scene of video content by performing averaging of frames present in each scene of video content. For each averaged scene image a set of random numbers are generated using a secret key to identify pixels at random locations of the averaged scene image. The secret key is associated with a watermark pattern corresponding to each averaged scene image. The identified pixels in each averaged scene image are mapped to each pixel of corresponding watermark pattern to obtain respective mapped pixels. Using respective mapped pixels, values of verification information are fetched and assigned using predetermined rules. The values of verification information are arranged to obtain first visual cryptographic share of watermark pattern for each averaged scene image.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: February 19, 2013
    Assignee: Infosys Technologies Limited
    Inventors: Aditya Vashistha, Rajarathnam Nallusamy, Sanjoy Paul
  • Publication number: 20120148089
    Abstract: A method for watermarking of video content is provided. An averaged scene image is computed for each scene of video content by performing averaging of frames present in each scene of video content. For each averaged scene image a set of random numbers are generated using a secret key to identify pixels at random locations of the averaged scene image. The secret key is associated with a watermark pattern corresponding to each averaged scene image. The identified pixels in each averaged scene image are mapped to each pixel of corresponding watermark pattern to obtain respective mapped pixels. Using respective mapped pixels, values of verification information are fetched and assigned using predetermined rules. The values of verification information are arranged to obtain first visual cryptographic share of watermark pattern for each averaged scene image.
    Type: Application
    Filed: February 15, 2011
    Publication date: June 14, 2012
    Applicant: INFOSYS TECHNOLOGIES LIMITED
    Inventors: Aditya Vashistha, Rajarathnam Nallusamy, Sanjoy Paul