Yumin Lee

Title: Yumin Lee: Innovator in Image Capturing and OFDM Technology

Introduction

Yumin Lee is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the fields of image capturing technology and wireless communication systems. With a total of 6 patents to his name, Lee's work reflects a commitment to innovation and technological advancement.

Latest Patents

One of Yumin Lee's latest patents is an image capturing device and method. This invention provides an image capturing device that includes a tone mapping circuit, a color correction circuit, and a color gamut mapping circuit. The tone mapping circuit obtains a first image that includes a first pixel and performs a tone mapping operation to obtain a brightness adjustment parameter. The color correction circuit then converts the first color channels into a plurality of second color channels based on the brightness adjustment parameter and the brightness of the first pixel. Finally, the color gamut mapping circuit performs a color gamut mapping operation on the second color channels to convert them into a plurality of third color channels, outputting a second image characterized by these third color channels.

Another notable patent is the adaptive quantization method and apparatus for an OFDM receiver. This invention includes methods and devices for adaptive quantization of OFDM signals according to modulation and coding schemes and sub-carrier frequency responses. Efficient quantization is utilized to reduce the large dynamic range of signals, achieving circuit simplification and chip area reduction. In one embodiment, a quantization circuit includes a quantization selector that selects quantization thresholds according to modulation and coding schemes and sub-carrier frequency responses, along with a non-uniform quantizer that reduces input dynamic range.

Career Highlights

Yumin Lee has worked with several notable companies throughout his career, including Motorola Corporation and Integrated System Solutions Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.

Collaborations

Some of Yumin Lee's coworkers include Jeng-Hong Chen and Yuh-Chun Lin. Their collaboration has likely fostered an environment of creativity and innovation, leading to the development of groundbreaking technologies.

Conclusion

Yumin Lee's contributions to image capturing technology and OFDM systems highlight his role as a significant innovator in the field. His patents reflect a deep understanding of complex technological challenges and a commitment to finding effective solutions.