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:
Apr. 04, 1989
Filed:
Aug. 25, 1987
Kiyoshi Kimura, Miyagi, JP;
Alps Electric Co., Ltd., , JP;
Abstract
A coordinate input apparatus includes proximity detecting means for a coordinate pointing tool on an input plane, wherein detection of the coordinates indicated by the pointing tool is performed when the absolute value of the signal level detected by the coordinate pointing tool twice exceeds a predetermined output level during a single scanning operation. When the coordinate pointing tool is dropped or laid on the input plane, the output signal level does not twice exceed the predetermined level within one scanning operation, and consequently, no coordinate detecting operation will be performed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile