Invention Grant
US08368316B2 LED circuit and operation method of the same having minimum output voltage selection mechanism to generate feedback voltage
有权
具有最小输出电压选择机构的LED电路及其运算方法产生反馈电压
- Patent Title: LED circuit and operation method of the same having minimum output voltage selection mechanism to generate feedback voltage
- Patent Title (中): 具有最小输出电压选择机构的LED电路及其运算方法产生反馈电压
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Application No.: US12791964Application Date: 2010-06-02
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Publication No.: US08368316B2Publication Date: 2013-02-05
- Inventor: Aung Aung Yinn , Chow-Peng Lee
- Applicant: Aung Aung Yinn , Chow-Peng Lee
- Applicant Address: TW Tainan County
- Assignee: Himax Analogic, Inc.
- Current Assignee: Himax Analogic, Inc.
- Current Assignee Address: TW Tainan County
- Agency: McClure, Qualey & Rodack, LLP
- Main IPC: H05B41/16
- IPC: H05B41/16

Abstract:
A LED circuit is provided. The LED circuit comprises: a plurality of LED channels, a driving module and a feedback-selecting module. The driving module supplies a driving voltage to the plurality of LED channels according to a feedback voltage. The feedback-selecting module comprises an open detection unit and a minimum-selecting unit. The open detection unit performs an open detection mechanism to separate the plurality of LED channels into a plurality of open LED channels and a plurality of non-open LED channels having an output voltage respectively. The minimum-selecting unit performs a selection mechanism to select a minimum output voltage as the feedback voltage from the output voltage of each of the plurality of non-open LED channels. A LED circuit operation method adapted in the LED circuit is provided herein as well.
Public/Granted literature
- US20110298377A1 LED Circuit and Operation Method of the Same Public/Granted day:2011-12-08
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