The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 1989
Filed:
Oct. 21, 1987
Hsing Chen, Hsinchu, TW;
Dar-Chang Juang, Hsinchu, TW;
Abstract
A digital computer writing board making use of the piezoelectric characteristics by means of a soft piezoelectric film material to convert a physical pressure into an electrical signal, which is utilized to form fine electric polar lines of high resolution to be arranged into an upper layer and a lower layer quadraturally for sub-group encoding, then for reading out the positions of various signals which will be detected by a detection circuits and stored into a memory for processing by a computer and for displaying on the corresponding positions on the screen. The digital computer writing board is capable of having a common writing instrument (such as a pencil, ball pen . . . etc.) directly writing or drawing and having those character tracings or graphic patterns thus left to be processed digitally for storage in a memory for further processing, display, identification within the computer terminal or for the transmission as an electronic document and printing out, with a view to providing a solution to such problems as one in which a hand writing of characters or graphs is insusceptibly connected within an interface of the computer or communication link. This has been a revolutional contribution as means inputing some handwriting to the computers of next generation.