Patents by Inventor Paul R. Chu

Paul R. Chu 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).

  • Session initiation protocol (SIP)-H.323 video interwork
    Patent number: 8842150
    Abstract: In one embodiment, a first message for a video call is received from a first end point. The first end point may be communicating using a first protocol, such as H.323. The first message is for a second end point that communicates using a second protocol, such as SIP. The first message may be an early offer in SIP to start a video call. The first message includes media information that is needed to initiate the video call. The media information is stored and may be later used to initiate the video call with the second end point. The stored media information is mapped to one or more messages that are sent to the second end point to initiate the video call using a slow start initiation procedure in H.323.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: September 23, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Parameswaran Kumarasamy, Paul R. Chu
  • Session initiation protocol (SIP)-H.323 video interwork
    Publication number: 20080151037
    Abstract: In one embodiment, a first message for a video call is received from a first end point. The first end point may be communicating using a first protocol, such as H.323. The first message is for a second end point that communicates using a second protocol, such as SIP. The first message may be an early offer in SIP to start a video call. The first message includes media information that is needed to initiate the video call. The media information is stored and may be later used to initiate the video call with the second end point. The stored media information is mapped to one or more messages that are sent to the second end point to initiate the video call using a slow start initiation procedure in H.323.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 26, 2008
    Applicant: Cisco Technology, Inc.
    Inventors: Parameswaran Kumarasamy, Paul R. Chu