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:
Oct. 16, 2012
Filed:
Aug. 17, 2006
Ryuji Aono, Numazu, JP;
Ryuji Aono, Numazu, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo-To, JP;
Abstract
This disclosure concerns a speed detector sampling coordinates showing the position of a moving body and detecting the speed thereof includes a memory storing preset tentative angles and the values of a trigonometric function corresponding to the tentative angles; a first register storing the first coordinates of the moving body obtained by a first sampling; a second register storing the actual second coordinates of the moving body obtained by a second sampling subsequent to the first sampling; and an arithmetic operation unit calculating second coordinates in calculation, which are shown by multiplication, addition, or subtraction of the first coordinates and the values of the trigonometric function, to approximate the second coordinates in calculation to the actual second coordinates, the arithmetic operation unit calculating the speed of the moving body based on the tentative angle corresponding to the value of the trigonometric function used to the second coordinates in calculation.