Position pointing device
Patent 5977959 Issued on November 2, 1999. Estimated Expiration Date: 
August 27, 2017. 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.
August 27, 2017. 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 References Re35016 Position detecting apparatus Three-axis force measurement stylus Coordinates input apparatus Stylus for handwriting identification Position detector Pressure sensitive stylus pen Position pointing device, system and method employing AC field Patent #: 5629500 InventorsAssigneeApplicationNo. 917838 filed on 08/27/1997US Classes:345/179, Stylus178/19.01, Writing digitizer stylus178/19.02, Acoustical stylus345/173Touch panelExaminersPrimary: Saras, StevenAssistant: Awad, Amr A. Attorney, Agent or FirmInternational ClassG09G 005/00Foreign Application Priority Data1996-10-31 JPAbstractA pen shaped position pointing device used in a position detecting apparatus. A pen-tip segment has side pressure detectors to detect pressure from side directions. The side pressure detectors detect the pen pressure even when the pen is tilted with a large angle. If multiple side pressure detectors are provided, each detector can have a different function, for example, color.Field of SearchTouch panelStylus Writing digitizer stylus Acoustical stylus Capacitive or inductive stylus Pressure stylus Light pen AC source Multifrequency Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) Electrical filter or multiplexer Writing digitizer pad Unconstrained handwriting (e.g., cursive) On-line recognition of handwritten characters Writing on ordinary surface (i.e., electronics are in pen) With a display Sensing mechanism in stylus Responsive to multiple loads or load components | |
