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US Patent 5977959 - Position pointing device
US Patent Issued on November 2, 1999
Estimated Patent Expiration Date:
August 27, 2017Estimated 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.
Estimated Patent Expiration Date:
August 27, 2017Estimated 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.AbstractA 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. | InventorsAssigneeApplicationNo. 917838 filed on 08/27/1997US Classes:345/179, Stylus178/19.01, Writing digitizer stylus178/19.02, Acoustical stylus345/173Touch panelField of Search345/173, Touch panel345/179, Stylus178/19.01, Writing digitizer stylus178/19.02, Acoustical stylus178/19.03, Capacitive or inductive stylus178/19.04, Pressure stylus178/19.05, Light pen178/19.06, AC source178/19.07, Multifrequency178/18.01, Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry)178/20.02, Electrical filter or multiplexer178/18.03, Writing digitizer pad382/186, Unconstrained handwriting (e.g., cursive)382/187, On-line recognition of handwritten characters382/188, Writing on ordinary surface (i.e., electronics are in pen)382/189, With a display382/314, Sensing mechanism in stylus73/862.041Responsive to multiple loads or load componentsExaminersPrimary: Saras, StevenAssistant: Awad, Amr A. Attorney, Agent or FirmUS Patent ReferencesRe35016, 4878553, Position detecting apparatusIssued on: 11/07/1989 Inventor: Yamanami, et al.4896543, Three-axis force measurement stylus Issued on: 01/30/1990 Inventor: Gullman4902858, Coordinates input apparatus Issued on: 02/20/1990 Inventor: Yamanami, et al.5111004, Stylus for handwriting identification Issued on: 05/05/1992 Inventor: Gullman5466896, Position detector Issued on: 11/14/1995 Inventor: Murakami, et al.5565632, Pressure sensitive stylus pen Issued on: 10/15/1996 Inventor: Ogawa5629500Position pointing device, system and method employing AC field Issued on: 05/13/1997 Inventor: Fukuzaki, et al. International ClassG09G 005/00Foreign Application Priority Data1996-10-31 JP |
