Patents by Inventor Andrew J. Chalupka

Andrew J. Chalupka 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: 6418473
    Abstract: A server provides a channel for previewing multimedia and a plurality of full screen multimedia channels. A client displays plural preview screens representing available multimedia channels from the server. Selection of a particular one of the plural preview screens at the client signals the server of the desired channel. The server then initiates streaming of the desired channel to the client. The server tracks the address of the user, the name of the stream and when the clip was started. After the client is finished viewing the stream another TCP connection is made to the server to unsubscribe. The server can therefore keep track of who has viewed which streams, for how long and at what time of the day. This method of tracking could also be used to track preview viewing.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: July 9, 2002
    Assignee: Nortel Networks Limited
    Inventors: Susan T. St. Maurice, Thinh D. Nguyen, Andrew J. Chalupka