Patents by Inventor Hamid T. Bahramian

Hamid T. Bahramian 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).

  • On-chip high frequency damping for laser diode driver chips
    Patent number: 5701060
    Abstract: A laser diode driver chip is disclosed which has a circuit to substantially reduce a ringing on a laser diode driving current generated by the laser diode driver chip. This invention identifies that the ringing on the laser diode driving current is caused by three different resonances which are coupled together. This invention also suggests a model for the sources of these three different resonances and identifies the three main nodes which are common between the sources of resonances. Finally, this invention places a damping circuit between the three main nodes of the laser diode driver to substantially reduce the ringing on the laser diode driving current.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: December 23, 1997
    Assignee: Xerox Corporation
    Inventors: Steven A. Buhler, Hamid T. Bahramian