Touch panel display
Patent 5196836 Issued on March 23, 1993. Estimated Expiration Date: 
February 21, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 21, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTouch sensitive computer input device Touch panel input apparatus Crossed fiber optic tactile sensor Light collecting and redirecting means Control and display system Liquid crystal display touch screen having electronics on one side Distributed optical fiber device for digitizer tablet Patent #: 5001306 InventorApplicationNo. 839824 filed on 02/21/1992US Classes:345/175, Including optical detection250/221, Controlled by article, person, or animal250/227.21With light chopping or modulationExaminersPrimary: Brier, JefferyAssistant: Au, A. Attorney, Agent or FirmInternational ClassG09G 003/02AbstractA optical input device which can determine the location of a stylus in a field with only a single emitter and a single detector. A fiber-optic bundle is used to transmit energy from the emitter to the vertical and horizontal output sides of a bezel. The fiber-optic bundle returns energy from the input vertical and horizontal sides of the bezel to the detector. The bezel is covered by LCD masks which block energy transmission through the bezel. A multiplexor scans the LCD masks to allow a beam of energy to scan across the vertical and horizontal fields of the device. The location of a stylus is located by detecting an interrupted beam. | |
