Patents by Inventor William E. Burchanowski

William E. Burchanowski 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: 5841382
    Abstract: Testing of digital-to-analog converters is accelerated by applying one or more different approaches. One approach relies on a switched capacitor, which lowers the overall capacitance of the converter during testing, thereby reducing the settling time for each code value. Another approach makes the duration of each testing step a function of the particular code value, rather than using the worst-case settling time for each testing step. Yet another approach uses a sequence of non-consecutive code values to determine whether each switch in the converter is functional. Using non-consecutive code values permits the use of partial settling times during converter testing. Each of the approaches can be used to accelerate the testing of D/A converters, whether they have linear or folded resistor strings.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: November 24, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Robert W. Walden, Ramin Khoini-Poorfard, William E. Burchanowski