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:
Aug. 20, 1991
Filed:
Sep. 24, 1987
Mitsuo Kazama, Soka, JP;
Pentel Kabushiki Kaisha, , JP;
Abstract
A cursor device for a capacitive coupling tablet used as a digitizer for inputting a figure or pattern. An index indicative of a coordinate position on a tablet to be input is displayed on a pane mounted on a window of a housing, and on the side opposite the pane are carried a detection electrode corresponding to the index and a signal transmission wire extending from the electrode. The detection electrode is capacitively coupled to a few conductors adjacent to each other within the table to detect pulses having a level related to the distance from these conductors. In this case, the level of the pulse detected from the conductors present at a position crossed to the signal transmission wire tends to relatively lower, and therefore, a shield layer distributed around the electrode is formed on the pane to solve such inconveniences.