Writing device for storing handwriting
Patent 5215397 Issued on June 1, 1993. Estimated Expiration Date: 
March 30, 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.
March 30, 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 References 3906444 Keyless electronic calculating pen Digitizer for locating the position of a stylus point on a writing surface Hand held pen-size calculator Data input pen for Signature Verification Method of signature verification and device for carrying out the method Three-axis force measurement stylus Patent #: 4896543 InventorsAssigneeApplicationNo. 859680 filed on 03/30/1992US Classes:401/194, WITH SIGNAL OR INDICATOR73/862.51, With recording means73/862.541, Combined250/221, Controlled by article, person, or animal382/188, Writing on ordinary surface (i.e., electronics are in pen)401/195COMBINEDExaminersPrimary: DeMille, Danton D.Attorney, Agent or FirmForeign Patent References
International ClassG06K 009/24Foreign Application Priority Data1991-04-01 JPAbstractWhen characters and the like are written with a writing device, handwriting is detected by a handwriting detection circuit based on outputs from optical sensors and stress sensors and is stored in a handwriting memory section. The handwriting memory section stores the handwriting whereby it can be used as input data for a computer and the like without reductions in the convenience in using the writing device. | |
