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. 04, 2017
Filed:
Nov. 11, 2015
Alfasemi Inc., Taipei, TW;
Yu-Cheng Chang, Cupertino, CA (US);
Te-Lung Shih, Taipei, TW;
ALFASEMI INC., Taipei, TW;
Abstract
An LED control circuit, comprising: a current source including a positive terminal and a negative terminal for providing a current; an LED, which is disposed on a first current path, including an anode and a cathode where the anode is connected to the positive terminal of the current source; an LED monitor including an input terminal and an output terminal where the input terminal is connected to the anode or the cathode of the LED; and a second current path connected in parallel to the first current path; wherein, when the LED monitor detects that the first current meets a target value, if the source current provided by the power source is greater than the target value, a second current divided from the source current flows through the second current path.