Patents by Inventor James M. Ginthner

James M. Ginthner 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).

  • Patent number: 4998108
    Abstract: A digital-to-analog converter system includes a logic system which receives input signals, receives an increment/decrement signal, and provides a digital word composed of most significant bits and least significant bits. The system includes two DACs haaving separate data rates and ranges for converting the most significant bits and the least significant bits, respectively, the data rate of the second DAC being greater than the data rate of the first DAC. Combining circuitry produces an analog signal representative of the digital word from the first and second analog outputs. The data rate of the combined output may be as fast as the data rate of the second DAC, and the range of the combined output may be as large as the range of the first DAC. The system also includes track and hold circuitry which holds the value of the output of the first DAC until glitches are settled.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: March 5, 1991
    Assignee: International Business Machines Corporation
    Inventors: James M. Ginthner, Cecil T. Ho