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:
Mar. 04, 2003
Filed:
Apr. 24, 2001
Hiroshi Kida, Yamanashi-ken, JP;
Masayoshi Murayama, Yamanashi-ken, JP;
Masaaki Saito, Yamanashi-ken, JP;
Tsutomu Ohtani, Yamanashi-ken, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A coordinate position detecting method uses a plurality of light emitting elements and a plurality of light receiving elements located on mutually opposite sides, all the elements being arranged at a predetermined interval in horizontal and vertical directions, with each pair of mutually opposed light emitting element and light receiving element forming a light beam path, such that the coordinate position of a light blocking object can be detected once the light beam path is blocked. The method comprises: storing N previous coordinate datas obtained when detecting a movement of the light blocking ojecte, using n (1≦n≦N) coordinate datas of the N previous coordinate datas to calculate a coordinate position of the light blocking object; and changing the number of the coordinate datas for use in calculating the coordinate position, in accordance with a speed of the movment of the light blocking object.