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:
May. 28, 2002
Filed:
Aug. 04, 2000
Applicant:
Inventor:
Jonathan W. Hill, Scarborough, ME (US);
Assignee:
Control Devices, Inc., Standish, ME (US);
Primary Examiner:
Int. Cl.
CPC ...
B60Q 1/08 ; H05B 3/702 ;
U.S. Cl.
CPC ...
B60Q 1/08 ; H05B 3/702 ;
Abstract
An improved ambient light sensor is provided. Light passes to at least two photosensors with different peak response frequencies. A controller accepts output signals from the photosensors and operates vehicle systems (e.g., headlights or environmental controls ) accordingly. The controller may distinguish between natural and artificial light, so that headlights are illuminated while a vehicle passes through a well lit tunnel, or is exposed to lights from another vehicle.