Patents by Inventor Carl G. Hallberg

Carl G. Hallberg 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: 5734596
    Abstract: A self-calibrating, remote programmable signal conditioning amplifier system employs information read from a memory attached to a measurement transducer for automatic calibration. The signal conditioning amplifier is self-calibrated on a continuous basis through use of a dual input path arrangement, with each path containing a multiplexer and a programmable amplifier. A digital signal processor controls operation of the system such that a transducer signal is applied to one of the input paths, while one or more calibration signals are applied to the second input path. Once the second path is calibrated, the digital signal processor switches the transducer signal to the second path, and then calibrates the first path. This process is continually repeated so that each path is calibrated on an essentially continuous basis. Dual output paths are also employed which are calibrated in the same manner.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: March 31, 1998
    Assignee: The United States of America as represented by Administrator National Aeronautics and Space Administration
    Inventors: Pedro J. Medelius, Carl G. Hallberg, Howard J. Simpson, III, Stephen W. Thayer