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:
Nov. 25, 2003
Filed:
May. 03, 2002
Toshihisa Hayami, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
An adaptive front-lighting system includes lamp deflection angle controlling means having a steering angle sensor for detecting a steering direction of a vehicle and supplying a signal and controlling a deflection angle of a lamp based on sensor outputs from the steering angle sensor. The lamp deflection angle controlling means includes an arithmetic control means for calculating a time series moving average of the output from the steering angle sensor. Averaging the output from the steering angle sensor on the time axis in the arithmetic circuit means enables to obtain outputs having smaller step widths than step widths of the outputs from the steering angle sensor, and controlling the deflection angle of the lamp based on the output enables to control the deflection angle of the lamp with the minute step widths.