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. 07, 2004
Filed:
Apr. 25, 2003
Kazuaki Tanaka, Kawagoe, JP;
Seiji Goto, Kawagoe, JP;
Isao Endo, Kawagoe, JP;
Tatsuya Okamoto, Kawagoe, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A velocity information acquisition section acquires velocity information on the velocity of a vehicle and records this acquired information in a velocity information recording section . A state judgment section judges start and stop states of the vehicle based on state information indicating the start and stop states of the vehicle that was acquired at a state information acquisition section . After this judgment, a minimum output velocity computing section accurately computes, based on the velocity information recorded in velocity information recording section , a minimum output velocity in a period in which a vehicle velocity detection circuit cannot detect velocity information. A movement condition computing section can appropriately compute a relative movement distance or a relative movement velocity of the vehicle based on the state information acquired at state information acquisition section and the minimum output velocity computed at minimum output velocity computing section