Patents by Inventor Douglas R. Medina

Douglas R. Medina 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).

  • Method and system for detecting audio and video synchronization
    Patent number: 8699351
    Abstract: A method and system for diagnosing synchronization offsets in IPTV program signals includes generating audio counter values for audio packets and video counter values for video packets, such that synchronized audio packets and video packets have corresponding counter values. The correspondence may be fixed or may be a variable relationship during the IPTV program duration. The difference in arrival times of the audio and video packets may be measured at various IPTV network nodes, and compared to the IPTV program clock. Aberrant values for arrival times may result in a network synchronization alarm at an identified IPTV network node.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: April 15, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Douglas R. Medina, Frank Robert Coppa, Larry Kennedy
  • Managing access to high definition content
    Patent number: 8108901
    Abstract: A system and method for managing access to high definition (HD) content includes a master customer premises equipment (CPE) device enabled for prioritizing conflicting requests for HD content based on predefined priority settings associated with a plurality of client CPE devices. Access to HD content by the client CPE devices may be associated with a token and conflicting requests may be resolved in favor of the client CPE device that holds the token. Disclosed systems permit administrators to control the use of limited resources within a location by limiting access to the limited resources by secondary users.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: January 31, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Nicholas A. Nicas, Douglas R. Medina, Brian Wilson
  • METHOD AND SYSTEM FOR DETECTING AUDIO AND VIDEO SYNCHRONIZATION
    Publication number: 20110134763
    Abstract: A method and system for diagnosing synchronization offsets in IPTV program signals includes generating audio counter values for audio packets and video counter values for video packets, such that synchronized audio packets and video packets have corresponding counter values. The correspondence may be fixed or may be a variable relationship during the IPTV program duration. The difference in arrival times of the audio and video packets may be measured at various IPTV network nodes, and compared to the IPTV program clock. Aberrant values for arrival times may result in a network synchronization alarm at an identified IPTV network node.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 9, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Douglas R. Medina, Frank Robert Coppa, Larry Kennedy
  • Managing Access to High Definition Content
    Publication number: 20100058400
    Abstract: A system and method for managing access to high definition (HD) content includes a master customer premises equipment (CPE) device enabled for prioritizing conflicting requests for HD content based on predefined priority settings associated with a plurality of client CPE devices. Access to HD content by the client CPE devices may be associated with a token and conflicting requests may be resolved in favor of the client CPE device that holds the token. Disclosed systems permit administrators to control the use of limited resources within a location by limiting access to the limited resources by secondary users.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 4, 2010
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Nicholas A. Nicas, Douglas R. Medina, Brian Wilson