Patents Assigned to Qumu Corporation
  • Patent number: 9773290
    Abstract: In an embodiment, a method of decoding a watermarked video includes receiving a video including a watermark and three or more pilot signals. The method includes attempting to detect the watermark and retrieve a corresponding message in the video based on one or more decoding starting points of the video. The method includes outputting the message if the attempt is successful. If the attempt fails, the method includes detecting the pilot signals in the video; based on the detected pilot signals, estimating a geometric distortion of the video; inverting the geometric distortion for the video to generate a warped video; and attempting to detect the watermark and retrieve the corresponding message in the warped video based on one or more decoding starting points of the warped video.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: September 26, 2017
    Assignee: QUMU CORPORATION
    Inventors: Xiwen Zhao, Priyadarshee Deeptarag Mathur
  • Patent number: 9245310
    Abstract: In an embodiment, a method of watermarking a video includes generating three or more pilot signals. The method also includes generating a watermark. The method also includes embedding the three or more of the pilot signals in first frames of the video. The method also includes embedding the watermark in second frames of the video according to a watermarking just-noticeable-difference (JND) model. The second frames may be non-overlapping with the first frames.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 26, 2016
    Assignee: QUMU CORPORATION
    Inventors: Xiwen Zhao, Priyadarshee Deeptarag Mathur
  • Patent number: 8935532
    Abstract: In an example, a method for secure publication of content is described. The method may include encrypting content with a media key. The method may also include providing the encrypted content to a client device associated with a private key and a public key. The private key may be stored at the client device. The method may also include encrypting the media key with the public key. The method may also include providing the encrypted media key to the client device.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: January 13, 2015
    Assignee: Qumu Corporation
    Inventors: Samir Mittal, Priyadarshee Deeptarag Mathur, Robert William Johnson, Christopher Ashley Wells
  • Publication number: 20140208122
    Abstract: In an example, a method of securing content is described. The method may include instantiating a content server on a client device. The method may also include operating the content server to retrieve content identified by a Uniform Resource Identifier (URI). The method may also include serving the content from the content server to a content renderer on the client device. The content renderer may be configured to render the content at the client device and to prohibit saving the content in the clear on the client device.
    Type: Application
    Filed: March 26, 2014
    Publication date: July 24, 2014
    Applicant: QUMU CORPORATION
    Inventors: Priyadarshee Deeptarag Mathur, Robert J. Reutiman, Samir Mittal
  • Patent number: 8726010
    Abstract: In an example, a method of securing content is described. The method may include instantiating a content server on a client device. The method may also include operating the content server to retrieve content identified by a Uniform Resource Identifier (URI). The method may also include serving the content from the content server to a content renderer on the client device. The content renderer may be configured to render the content at the client device and to prohibit saving the content in the clear on the client device.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: May 13, 2014
    Assignee: Qumu Corporation
    Inventors: Priyadarshee Deeptarag Mathur, Robert J. Reutiman, Samir Mittal