Patent · US Active

Compensating LED current by LED characteristics for LED dimming control

US8786213B2 · kind B2 · utility

16Cited by

4References

21Claims

0Family size

Assignee

RICHTEK TECHNOLOGY CORPORATION · TW

Inventors

Shei-Chie Yang · Hsinchu, TW
Shui-Mu Lin · Zhuolan Township, TW
Jun-Sheng Cheng
Ming-Yu Lin · Bakersfield, US
Chun-I Lin · Taoyuan, TW

Key dates

Filing date	Dec 5, 2012
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Mar 14, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

LED dimming control circuit and method compensate LED current or LED average current by LED characteristics to improve dimming efficiency and performance. LED characteristic related look-up tables are stored to provide compensation values, and input LED current setting information is compensated by the compensation values to generate corrected LED current setting information for determining LED brightness.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.