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:
Dec. 21, 2004
Filed:
Mar. 26, 2001
Takeshi Asakura, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-Ken, JP;
Abstract
A flying sphere is photographed twice at a predetermined time interval and two static images thus obtained are used to measure a rotation of the sphere through an image processing based on a recognition mark of a surface of the sphere. The recognition mark includes a central mark having a directivity and a rotating angle calculating mark provided to surround the central mark. The central mark includes a rectangle and a circle provided apart from the rectangle adjacent to one of short sides of the rectangle. Three or more rotating angle calculating marks are provided. Respective center positions of the rotating angle calculating marks are present in a region provided apart from a center position of the central mark by 13 mm to 17 mm.