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. 09, 2000
Filed:
Mar. 15, 1996
Kazuhiro Kisaichi, Hino, JP;
Jitsu Iwaki, Kunitachi, JP;
Toshiro Nose, Sagamihara, JP;
Nobuhiro Inoue, Hachioji, JP;
Toshihiko Nannichi, Fuchu, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The present invention concerns a coordinate input device for entering coordinate values by superposing on a display device (LCD or CRT). The device is comprised of a coordinate input section wherein a first conductive sheet for x-coordinate detection provided with electrodes on a pair of end edges and a second conductive sheet for y-coordinate detection provided with electrodes on a pair of end edges are superposed through a spacer so that respective electrodes intersect orthogonally. In a low power consumption mode of operation; a predetermined voltage is applied between one of the electrodes of the first conductive sheet and one of electrodes of the second conductive sheet for detecting a variation of the voltage. When the voltage varies the device switches, a predetermined voltage is applied between one electrode x1 of the first conductive sheet and one electrode y2 of the second conductive sheet. When the voltage does not vary, no current flows between the pair of electrodes x1, x2 (or y1, y2) of either of the first conductive sheet or the second conductive sheet, therefore the low power consumption is maintained.