Title:
A corner information providing device and a corner information service method
Document Type and Number:
Japanese Patent JP6278381
Kind Code:
B2
Abstract:
A curved-section-information supplying apparatus includes: a clothoid-section identifying unit that identifies a clothoid section included in a curved section of a road; a clothoid-coefficient obtaining unit that obtains a clothoid coefficient for a clothoid curve representing a shape of the clothoid section identified by the clothoid-section identifying unit; and a radius-of-curvature calculating unit that calculates a radius of curvature at a position at a travel distance in the clothoid section, based on the clothoid coefficient and a curve length from a start point of the clothoid curve, the curve length corresponding to the travel distance from a start point of the clothoid section, to supply curved-section information based on the radius of curvature at the position at the travel distance in the clothoid section.
Inventors:
Tetsuro Yabe
Application Number:
JP2013174549A
Publication Date:
February 14, 2018
Filing Date:
August 26, 2013
Export Citation:
Assignee:
Alpine Electronics Co., Ltd.
International Classes:
G01C21/26; G08G1/16; G09B29/00
Domestic Patent References:
| JP11160078A |
Other References:
今村遼平・長谷川昌弘・小林雄二・土居原健・村木広和・吉川眞・下垣豊・斉藤和也・高野忠・有冨孝一・清水三四郎,ジオインフォマティックス入門 ,日本,理工図書株式会社,2002年 9月20日,初版,pp.195-203
Attorney, Agent or Firm:
Masaki Higuchi