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:
Apr. 24, 2007
Filed:
Nov. 17, 2004
Cheng-chia Hsu, Tu-Cheng, TW;
Cheng-Chia Hsu, Tu-Cheng, TW;
Hon Hai Precision Ind. Co., Ltd., Taipei Hsien, TW;
Abstract
A dimming control method and a lighting system having dimming control, in which the lighting system () includes an input unit (), a light-emission unit () and a current control circuit (). The dimming control method is characterized by outputting a continuous current with a varying amplitude to the light-emission unit under a higher brightness, and clamping the amplitude of the current output to the light-emission unit to a fixed value and outputting a discontinuous current with a fixed amplitude and a varying duty cycle to the light-emission unit under a lower brightness.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile