Patents by Inventor Jose F. Gonzalez-Heres

Jose F. Gonzalez-Heres 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).

  • Laser touch panel reflective surface aberration cancelling
    Patent number: 5196835
    Abstract: A method and apparatus that distinguish a valid touch from an optical aberration caused by unwanted objects and/or scratches in the light plane of an optical touch panel device is disclosed. During a training mode the device learns the relative position of "aberration dropouts" caused by the unwanted objects. During normal operating mode the relative positions of "touch and aberration dropouts" are generated and compared with the relative position of aberration dropouts to distinguish between aberration dropout signals and touch dropout signals. The touch dropout signals are subjected to further processing to determine the precise location of a touch while the aberration dropout signals are discarded.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: March 23, 1993
    Assignee: International Business Machines Corporation
    Inventors: Larry A. Blue, Bruce T. Freedman, Jose F. Gonzalez-Heres, Alexander G. MacInnis