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. 29, 2012
Filed:
Sep. 11, 2009
Ping-chung Tseng, Taipei County, TW;
Ping-Chung Tseng, Taipei County, TW;
Acewell International Co., Ltd., Taoyuan County, TW;
Abstract
A control circuit for adjusting a backlight color is provided. In accordance with a preferred embodiment, the control circuit comprises an input device, a control unit, a backlight, and a plurality of pulse-width modulation units. The input device receives a plurality of external messages to generate a corresponding plurality of control signals. The control unit has a plurality of pins, implements a plurality of calculations based on the plurality of control signals, and generates a plurality of light-adjusting signals, each of which has a respective pulse width. The backlight has a plurality of light sources for a color mixing. Each of the pulse-width modulation units is correspondingly coupled to each of the pins and to each of the light sources, and adjusts a light of the each light source based on the respective pulse width.