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, 1995
Filed:
Jul. 12, 1993
Masahiro Ise, Kashihara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A tablet integrated with a display is provided comprising a matrix panel having row and column electrodes, a detecting conductor, a row electrode driver, a column electrode driver, and row and column coordinate detecting circuits. In a display mode, the row electrode driver applies a row scanning pulse successively to each row electrode of the matrix panel, and the column electrode driver simultaneously applies a display voltage to each column electrode of the matrix panel each time a corresponding row scanning pulse is applied. In a row detection mode, the row electrode driver applies the row scanning pulse successively to each row electrode of the matrix panel, and analyzes the timing of the row scanning pulse detected by a detecting conductor touching the matrix panel, so as to determine the row coordinate of the position of the detecting conductor. In a column detection mode, the column electrode driver applies the column scanning pulse successively to each column electrode of the matrix panel, and the column coordinate detecting circuit analyzes the timing of the column scanning pulse detected by the detecting conductor touching the matrix panel, so as to determine the column coordinate of the detecting conductor.