Patents by Inventor David Alexander Gammie

David Alexander Gammie 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).

  • Temperature compensation trim method
    Patent number: 6759892
    Abstract: The present invention overcomes the disadvantages of the prior art and provides a new temperature compensation trimming technique. Temperature compensated output is provided in a logarithmic voltage output device by the steps of: measuring the resistance of a first resistor, a second resistor, and a third resistor at a first temperature; measuring again the resistances of the first resistor, second resistor, and third resistor at a second temperature; and trimming the drift of the third resistor according to a calculated temperature compensation trim.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: July 6, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: David Alexander Gammie, Jeffrey B. Parfenchuck
  • Temperature compensation trim method
    Publication number: 20030179036
    Abstract: The present invention overcomes the disadvantages of the prior art and provides a new temperature compensation trimming technique. Temperature compensated output is provided in a logarithmic voltage output device by the steps of: measuring the resistance of a first resistor, a second resistor, and a third resistor at a first temperature; measuring again the resistances of the first resistor, second resistor, and third resistor at a second temperature; and trimming the drift of the third resistor according to a calculated temperature compensation trim.
    Type: Application
    Filed: July 1, 2002
    Publication date: September 25, 2003
    Inventors: David Alexander Gammie, Jeffrey B. Parfenchuck