Patents by Inventor Rex Arthur Coldren

Rex Arthur Coldren 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 apparatus for transmitting frequency shift key data in a packetized format
    Patent number: 7743164
    Abstract: This invention relates to a method and apparatus for transmitting frequency shift key (FSK) data in packetized format. More particularly, the invention is directed to a method for using a new Real-Time Transport Protocol (RTP) payload type to transport FSK data used for voiceband data transmission outside of the voice RTP stream. This technique allows for data compression and reduces the possibility of packet loss for FSK data carried in-band.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: June 22, 2010
    Assignee: Alcatel-Lucent USA Inc.
    Inventor: Rex Arthur Coldren