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:
Jun. 30, 2009
Filed:
Jan. 12, 2005
Toshiaki Niwa, Okazaki, JP;
Toshihiro Shiimado, Okazaki, JP;
Toshiaki Niwa, Okazaki, JP;
Toshihiro Shiimado, Okazaki, JP;
Aisin AW Co., Ltd., , JP;
Abstract
An apparatus for predicting road shape includes a map data reading unit, a clothoid curve calculating unit for calculating a clothoid curve corresponding to a corner area, and a fitting unit for adjusting the clothoid curve to the corner area. The clothoid curve calculating unit calculates a clothoid curve by using X-coordinates and Y-coordinates which are found by expressions: and wherein Xand Yare coordinates at a start point of a clothoid curve, L is distance from the start point of the clothoid curve, φ is computed by equation (3) φ=α+2kL, wherein α is an angle for the start point of the clothoid curve and 'k' is computed by equation (4) k =28/A, wherein A is a clothoid coefficient.