Joon-hwan Lee

Title: Innovations of Joon-hwan Lee in Image Correction Technologies

Introduction

Joon-hwan Lee is a notable inventor based in Gunpo, South Korea. He has made significant contributions to the field of image correction technologies, holding a total of 4 patents. His work primarily focuses on developing apparatuses that enhance the quality of video signals displayed on various devices.

Latest Patents

One of his latest patents is an image misconvergence correction apparatus designed to minimize switching noise influence. This apparatus includes a correction value generation unit that calculates a convergence correction value to address misconvergence issues when a video signal is scanned on a display device. It features an amplification unit that performs D-class amplification on the convergence correction value, a convergence yoke for controlling the path of electron beams, and a feedback sensing unit that differentially amplifies the voltage value for electric current passing through the convergence yoke. This innovative design effectively amplifies and outputs a convergence correction value while minimizing the influence of switching noise.

Another significant patent by Joon-hwan Lee is an image distortion correction apparatus capable of correcting misconvergence using an amplifier. This apparatus includes an image processor that detects image signals and synchronous signals from external sources. It also features a distortion value calculator that computes the misconvergence value based on these signals, a correction value calculator for determining the convergence correction value, and an amplifier that performs D-class amplification. The convergence yoke in this apparatus is fixed to a cathode ray tube (CRT) to control the electron beam path based on the amplified convergence correction value.

Career Highlights

Joon-hwan Lee is currently employed at Samsung Electronics Co., Ltd., where he continues to innovate in the field of image processing technologies. His work has significantly impacted the quality of visual displays, making them more efficient and effective.

Collaborations

Throughout his career, Joon-hwan Lee has collaborated with talented individuals such as Kyoung-geun Lee and Chung-Wook Roh. These collaborations have further enhanced the development of his innovative technologies.

Conclusion

Joon-hwan Lee's contributions to image correction technologies demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of the challenges in video signal processing and offer practical solutions to enhance display quality.