Patents by Inventor Charles F. Culpepper

Charles F. Culpepper 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).

  • Laser driver
    Patent number: 4813045
    Abstract: A laser driver which compensates for package parasitics at high frequencies has a current source to drive a laser diode. A modulation signal is input to an impedance matched buffer amplifier. A common-emitter amplifier is connected to the output of the buffer amplifier and operates as the current source.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: March 14, 1989
    Assignee: Tektronix, Inc.
    Inventor: Charles F. Culpepper