X Gong - US Patent 9,042,127, 2015 - Google Patents
BACKGROUND Since their commercial appearance in the 1960s, Light Emitting Diodes (LED) have become ubiquitous in electronic devices. Traditionally, LED light output was …
S Wu, SFS Hau, YM Wong - 2005 5th International Conference …, 2005 - ieeexplore.ieee.org
Nonlinearity has long been recognized as a problem endemic in power amplifiers (PA) with a high power. Digital predistortion (DPD) is one of most effective method to solve this …
L Svilainis - Journal of display technology, 2012 - opg.optica.org
Light-emitting diode (LED) video displays enclose thousands of LEDs which create the resulting image. LED intensity is regulated using pulse width modulation (PWM). Though the …
Q Wang, T Li, QH He - Journal of display technology, 2014 - opg.optica.org
In LED lighting systems, consideration about dimming and flicker is necessary. It is found that conventional DC-mode technique produces flicker-free light and high luminous efficacy …
M Doshi, R Zane - 2008 IEEE Power Electronics Specialists …, 2008 - ieeexplore.ieee.org
This paper presents a digital phase shifted modulator (PSM) for luminance control of high brightness light emitting diode (HB-LED) based light sources. The design of the modulator is …
By modulating the optical power of the light-emitting diode (LED) in accordance with the electrical source and using a photodetector to convert the corresponding optical variation …
L Corradini, G Spiazzi - IEEE Transactions on Power …, 2014 - ieeexplore.ieee.org
This paper presents a high-frequency, digitally controlled high-brightness LED driver for automotive applications with fast dimming capabilities. The power converter is based on the …
B Vassilakis, A Cova - 2005 Asia-Pacific Microwave …, 2005 - ieeexplore.ieee.org
Silicon LDMOS transistors have long been employed as the technology of choice for high power amplifiers in cellular infrastructure equipment. With each successive generation …
KH Loo, WK Lun, SC Tan, YM Lai… - IEEE transactions on …, 2009 - ieeexplore.ieee.org
LEDs must be externally driven by power sources to emit light. One problem associated with driving LEDs is its inherent nonlinear relation between the emission intensity and the …