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. 05, 2013
Filed:
Jul. 16, 2009
Roger Peter Anna Delnoij, Eindhoven, NL;
Roger Peter Anna Delnoij, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
An illumination system () comprises: —a light source (); —a controller () controlling the power output of the light source; —a light sensor () wirelessly communicating with the controller. In a normal mode, the controller controls the light source such that the light level remains substantially constant. In a change mode, the controller controls the light source such that the light level is gradually changed with a predetermined change rate (R) such as to decrease a deviation from a target level (L). The controller switches from its normal mode to its change mode on the basis of input signals received from the light sensor. The light sensor measures a light level, and decides whether or not to communicate a signal to the controller. The light sensor refrains from transmitting a signal when receiving the signal will not cause the controller to change its control behavior.