Patents by Inventor Michael Ludgate

Michael Ludgate 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).

  • Seamless switching between multicast video streams
    Patent number: 10645131
    Abstract: A packet-based video network including: two or more video data sources, each configured to launch video data packets onto the network as multicast data packets each associated with a multicast group identifier corresponding to that video data source; and a video data destination configured to receive and process video data from a video data source by joining a multicast group corresponding to that video data source, and execute a switching operation to switch from receiving video data from a first video data source to receiving video data from a second video data source by leaving a multicast group of the first video data source and joining a multicast group of the second video data source. The video data destination is configured to process video data corresponding to a video frame which, at end of a frame period, represents a most recently received video frame from the first video data source.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 5, 2020
    Assignee: SONY CORPORATION
    Inventors: Jian-Rong Chen, Clive Henry Gillard, Jonathan James Stone, Michael Ludgate
  • SEAMLESS SWITCHING BETWEEN MULTICAST VIDEO STREAMS
    Publication number: 20190052687
    Abstract: A packet-based video network including: two or more video data sources, each configured to launch video data packets onto the network as multicast data packets each associated with a multicast group identifier corresponding to that video data source; and a video data destination configured to receive and process video data from a video data source by joining a multicast group corresponding to that video data source, and execute a switching operation to switch from receiving video data from a first video data source to receiving video data from a second video data source by leaving a multicast group of the first video data source and joining a multicast group of the second video data source. The video data destination is configured to process video data corresponding to a video frame which, at end of a frame period, represents a most recently received video frame from the first video data source.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Applicant: SONY CORPORATION
    Inventors: Jian-Rong CHEN, Clive Henry GILLARD, Jonathan James STONE, Michael LUDGATE
  • Seamless switching between multicast video streams
    Patent number: 10135891
    Abstract: A packet-based video network including: two or more video data sources, each configured to launch video data packets onto the network as multicast data packets each associated with a multicast group identifier corresponding to that video data source; and a video data destination configured to receive and process video data from a video data source by joining a multicast group corresponding to that video data source, and execute a switching operation to switch from receiving video data from a first video data source to receiving video data from a second video data source by leaving a multicast group of the first video data source and joining a multicast group of the second video data source. The video data destination is configured to process video data corresponding to a video frame which, at end of a frame period, represents a most recently received video frame from the first video data source.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 20, 2018
    Assignee: Sony Corporation
    Inventors: Jian-Rong Chen, Clive Henry Gillard, Jonathan James Stone, Michael Ludgate
  • SEAMLESS SWITCHING BETWEEN MULTICAST VIDEO STREAMS
    Publication number: 20180191794
    Abstract: A packet-based video network including: two or more video data sources, each configured to launch video data packets onto the network as multicast data packets each associated with a multicast group identifier corresponding to that video data source; and a video data destination configured to receive and process video data from a video data source by joining a multicast group corresponding to that video data source, and execute a switching operation to switch from receiving video data from a first video data source to receiving video data from a second video data source by leaving a multicast group of the first video data source and joining a multicast group of the second video data source. The video data destination is configured to process video data corresponding to a video frame which, at end of a frame period, represents a most recently received video frame from the first video data source.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 5, 2018
    Applicant: SONY CORPORATION
    Inventors: Jian-Rong CHEN, Clive Henry GILLARD, Jonathan James STONE, Michael LUDGATE
  • Seamless switching between multicast video streams
    Patent number: 9942291
    Abstract: A packet-based video network including: two or more video data sources, each configured to launch video data packets onto the network as multicast data packets each associated with a multicast group identifier corresponding to that video data source; and a video data destination configured to receive and process video data from a video data source by joining a multicast group corresponding to that video data source, and execute a switching operation to switch from receiving video data from a first video data source to receiving video data from a second video data source by leaving a multicast group of the first video data source and joining a multicast group of the second video data source. The video data destination is configured to process video data corresponding to a video frame which, at end of a frame period, represents a most recently received video frame from the first video data source.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: April 10, 2018
    Assignee: Sony Corporation
    Inventors: Jian-Rong Chen, Clive Henry Gillard, Jonathan James Stone, Michael Ludgate
  • SEAMLESS SWITCHING BETWEEN MULTICAST VIDEO STREAMS
    Publication number: 20160373495
    Abstract: A packet-based video network including: two or more video data sources, each configured to launch video data packets onto the network as multicast data packets each associated with a multicast group identifier corresponding to that video data source; and a video data destination configured to receive and process video data from a video data source by joining a multicast group corresponding to that video data source, and execute a switching operation to switch from receiving video data from a first video data source to receiving video data from a second video data source by leaving a multicast group of the first video data source and joining a multicast group of the second video data source. The video data destination is configured to process video data corresponding to a video frame which, at end of a frame period, represents a most recently received video frame from the first video data source.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 22, 2016
    Applicant: SONY CORPORATION
    Inventors: Jian-Rong CHEN, Clive Henry GILLARD, Jonathan James STONE, Michael LUDGATE
  • Storage device enclosure
    Patent number: D436959
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: January 30, 2001
    Assignee: Iomega Corporation
    Inventors: Douglas S. Reynolds, Richard F. Leavitt, Kevin G. Dabb, Michael Ludgate, Jonathon Guerra, Spencer Murrell