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. 08, 2001
Filed:
Nov. 10, 1998
Yoshio Okajima, Nara, JP;
Akihiro Masuda, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal tablet equipment which allows improvement in accuracy of coordinate measurements by removing undesirable influence of noise caused by line pulse signals applied to a liquid crystal display and allows coordinate measurement in shorter time period includes a liquid crystal display, a liquid crystal display control circuit for applying the line pulse signals at a prescribed interval to each of an array of pixels constituting the liquid crystal display, a tablet stacked on the liquid crystal display, an A/D converter receiving a coordinate signal output from the tablet, a tablet control circuit for calculating coordinate data from a digital signal output from the A/D converter, and a CPU for letting A/D converter output the digital signal after a prescribed time period from a timing of activation of the line pulse signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile