Patents by Inventor Joseph Gwinn

Joseph Gwinn 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).

  • Split cascode line amplifier for current-mode signal transmission
    Patent number: 8134385
    Abstract: Current-mode transmission is implemented in a cascode amplifier by splitting a cascode circuit into a front end and a back end to ensure wideband current-mode transmission of an audio signal. A transmission cable is located between the high impedance output of the first end and the low impedance input of the back end. The front end includes a first amplifying device, and the back end includes a second amplifying device. The front end is phantom powered by the back end using the same electrical conductors that carry the current-mode signal over the transmission cable.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: March 13, 2012
    Inventor: Joseph Gwinn
  • Split cascode line amplifier for current-mode signal transmission
    Publication number: 20050146389
    Abstract: Current-mode transmission is implemented in a cascode amplifier by splitting a cascode circuit into a front end and a back end to ensure wideband current-mode transmission of an audio signal. A transmission cable is located between the high impedance output of the first end and the low impedance input of the back end. The front end includes a first amplifying device, and the back end includes a second amplifying device. The front end is phantom powered by the back end using the same electrical conductors that carry the current-mode signal over the transmission cable.
    Type: Application
    Filed: January 6, 2004
    Publication date: July 7, 2005
    Inventor: Joseph Gwinn