Company Filing History:
2 out of 15 
2 out of 622 
1 out of 175 Years Active: 2007-2018
Title: Da-Huei Lee: Innovator in Optical and Digital Technologies
Introduction
Da-Huei Lee is a prominent inventor based in Tainan, Taiwan. He has made significant contributions to the fields of optical and digital technologies, holding a total of four patents. His innovative work focuses on enhancing signal processing and reducing noise in electronic systems.
Latest Patents
One of Da-Huei Lee's latest patents is a device for eliminating optical noise. This device receives an optical signal and includes a first filter that transmits light within the same wavelength range as the optical signal. It outputs a filtered signal that includes the optical signal and first background noise. Additionally, a second filter transmits light outside the wavelength range of the optical signal, outputting second background noise. The device also features a converter that transforms the filtered signal into a first electrical signal and the second background noise into a second electrical signal. An operational unit then performs mathematical operations on the products of these signals to produce an output signal.
Another notable patent is the randomized thermometer-coding digital-to-analog converter (DAC) and its method. This invention aims to reduce harmonic distortion caused by non-ideal circuit mismatches. It introduces a dynamic element matching technique characterized by randomization, consecutive selection, and reduced element switching activity. The topology employs a bank of 1-bit DAC elements, summing their outputs to create a multi-level analog output. The binary digital input is encoded into thermometer code, and during a randomization period, the thermometer code is barrel-shifted to a randomly generated starting position. This process effectively randomizes DAC noise while minimizing switching activity.
Career Highlights
Da-Huei Lee has worked with notable organizations such as Megawin Technology Co., Ltd. and National Cheng Kung University. His experience in these institutions has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.
Collaborations
Some of Da-Huei Lee's coworkers include Tai-Haur Kuo and Cheng-Chung Yang. Their collaboration has likely fostered a creative environment that encourages innovation and the development of new technologies.
Conclusion
Da-Huei Lee's contributions to optical and digital technologies demonstrate his commitment to innovation. His patents reflect a deep understanding of signal processing and noise reduction, making him a significant figure in his field.