Patents by Inventor Alan L. Citron

Alan L. Citron 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).

  • Data-entry system
    Patent number: 4555699
    Abstract: A processor (18) receives signals from an electronic tablet (10) that represent the positions of a stylus (12) on the tablet surface. The processor operates a cathode-ray tube (20) to display the locations represented by the tablet signals and present scales for interpreting the display as values of a function. It also stores the quantitative data represented by the display in accordance with the scales. A user can therefore enter quantitative data in an analog manner, which is more natural in many instances.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: November 26, 1985
    Assignee: Bancware, Inc.
    Inventors: Alan L. Citron, Thomas W. F. Lindquist, William E. Popp