Ho Sun Yoo

Title: **Ho Sun Yoo: Innovator in Semiconductor and Control Technologies**

Introduction

Ho Sun Yoo, an esteemed inventor based in Seongnam-si, South Korea, holds a remarkable portfolio of four patents. His innovative contributions primarily focus on semiconductor testing systems and sensorless control apparatuses, which have significant implications for the technology and engineering sectors.

Latest Patents

Among his latest inventions is the “Pattern synthesis apparatus and semiconductor test system having the same.” This groundbreaking semiconductor test system integrates a user device that operates a reference device. It functions according to an interface signal based on a timing signal that has a variable operating frequency. The pattern synthesis apparatus measures the interval between adjacent edges of the timing signal and extracts a logic value of the interface signal to generate test pattern data. The final test device then utilizes this data to reconstruct the timing signal and apply it to a device under test (DUT), ultimately determining the operating state of the DUT.

Another notable patent is the “Sensorless control apparatus and control methods thereof.” This invention includes a speed command unit that outputs a speed command to an electric motor. It also features a current detector that monitors the electric current flowing through the motor and calculates the rotor's angle based on the detected current and voltage. Additionally, the out-of-step sensing unit senses any misalignment in the rotor according to a comparison of calculated and estimated angles, enabling more precise control of the motor's operation.

Career Highlights

Ho Sun Yoo has made significant strides in his career while working with prominent organizations such as Samsung Electronics and the Georgia Tech Research Corporation. His role in these companies has been pivotal in driving advancements in technology related to semiconductors and control systems.

Collaborations

During his career, Ho Sun Yoo has collaborated with talented individuals including Sung Yeol Kim and Jung Ik Ha. These partnerships have fostered a rich environment for innovation and technological progress, contributing to the development of his groundbreaking inventions.

Conclusion

Ho Sun Yoo’s work exemplifies the spirit of innovation in the fields of semiconductors and control technologies. His patents not only highlight his creativity and technical prowess but also his commitment to advancing engineering solutions that enhance the functionality and efficiency of electronic devices.