Patents by Inventor Dennis Peter Rienstra

Dennis Peter Rienstra 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: 5844814
    Abstract: A high resolution, independent position sensor is provided, having application in a magnetic tape drive and other environments in which a linear or angular position is to be monitored. Analog outputs from an inexpensive, low resolution optical encoder are processed to correct gain and offset distortions and are used as the basis for an interpolation process. If a code strip having a 127-micron grating is used, a resolution of about 0.125 microns can be achieved.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: December 1, 1998
    Assignee: International Business Machines Corporation
    Inventors: Alex Chliwnyj, Dennis Peter Rienstra, Steven Carter Wills