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:
Jan. 27, 2004
Filed:
Aug. 25, 2000
Jun Ashihara, Wako, JP;
Hiroyuki Andou, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An inter-vehicle distance measuring apparatus for measuring distance between a target vehicle ahead of a present vehicle following the target vehicle is disclosed, wherein the apparatus is not affected by weather conditions such as rainfall or snowfall. In the apparatus, the target vehicle transmits the first road-surface data, such as the roughness of the road surface, to the present vehicle. Also in the present vehicle, the second road-surface data such as the roughness is also detected, and both detected data are compared. In the present vehicle, the first and second road surface data having the maximum correlation are detected, and the time difference of each detection time of these data is calculated so as to calculate the inter-vehicle distance.