Patents by Inventor Klara Nahrstedt

Klara Nahrstedt 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: 8872895
    Abstract: A method for encoding video for streaming includes receiving a plurality of sequential image frames generated by a 3D graphics rendering engine. Graphics rendering contexts are obtained, including pixel depth map, rendering camera parameters, and camera motion from the 3D rendering engine. The method next entails selecting key frames among the plurality of sequential image frames, interpolating non-key frames via 3D image warping, and encoding all key frames and warping residues of non-key frames. The system is implementable on a server linked to a mobile user device for receiving the encoded frame data. The mobile user device is configured to decode the encoded frame data and display a corresponding image to a user of the mobile user device.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 28, 2014
    Assignees: Deutsche Telekom AG, University of Illinois
    Inventors: Cheng-Hsin Hsu, Shu Shi, Klara Nahrstedt, Roy H. Campbell
  • Publication number: 20130166766
    Abstract: Multiple input devices at a source location capture data to be streamed to one or more destination locations. The captured data is provided to a streaming interface of a streaming service that encapsulates the captured data in streaming packets. The streaming interface provides the streaming packets to a streaming gateway of the streaming service that processes the streaming packets and transmits the streaming packets to a streaming gateway at the destination location. The streaming gateways manage the correlated streaming of the multiple data streams. Various processing of the data streams can be performed by the streaming gateways, including various user-defined and system-defined processing.
    Type: Application
    Filed: June 29, 2012
    Publication date: June 27, 2013
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Klara Nahrstedt, Pooja Argarwal, Raoul Vicente Rivas Toledano, Wanmin Wu, Md Ahsan Arefin, Zixia Huang
  • Publication number: 20130083161
    Abstract: A method for encoding video for streaming includes receiving a plurality of sequential image frames generated by a 3D graphics rendering engine. Graphics rendering contexts are obtained, including pixel depth map, rendering camera parameters, and camera motion from the 3D rendering engine. The method next entails selecting key frames among the plurality of sequential image frames, interpolating non-key frames via 3D image warping, and encoding all key frames and warping residues of non-key frames. The system is implementable on a server linked to a mobile user device for receiving the encoded frame data. The mobile user device is configured to decode the encoded frame data and display a corresponding image to a user of the mobile user device.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicants: UNIVERSITY OF ILLINOIS, DEUTSCHE TELEKOM AG
    Inventors: Cheng-Hsin Hsu, Shu Shi, Klara Nahrstedt, Roy H. Campbell
  • Patent number: 8069216
    Abstract: A method and apparatus for alerting nodes of a malicious node in a mobile ad-hoc communication system is provided herein. Particularly, a method and apparatus for distributing an alert message to nodes surrounding a recently discovered malicious node is provided. This alert technique further leverages mobility to distribute the alert message to a large majority of nodes in the ad hoc wireless network within a reasonable amount of time.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 29, 2011
    Assignee: Motorola Solutions, Inc.
    Inventors: Wenbo He, Ying Huang, Klara Nahrstedt, Whay Chiou Lee
  • Publication number: 20080140795
    Abstract: A method and apparatus for alerting nodes of a malicious node in a mobile ad-hoc communication system is provided herein. Particularly, a method and apparatus for distributing an alert message to nodes surrounding a recently discovered malicious node is provided. This alert technique further leverages mobility to distribute the alert message to a large majority of nodes in the ad hoc wireless network within a reasonable amount of time.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 12, 2008
    Applicant: MOTOROLA, INC.
    Inventors: Wenbo He, Ying Huang, Klara Nahrstedt, Whay Chiou Lee