Location History:
- Jeonju, KR (2018)
- Seoul, KR (2021)
Company Filing History:
2 out of 11,004 
2 out of 1,342 
Years Active: 2018-2021
Title: Woojun Choi: Innovator in Temperature Sensing and Transmission Technologies
Introduction
Woojun Choi is a notable inventor based in Seoul, South Korea. He has made significant contributions to the fields of temperature sensing and transmission technologies. With a total of 2 patents, his work reflects a commitment to advancing innovative solutions in these areas.
Latest Patents
One of Woojun Choi's latest patents is a temperature sensor that utilizes a poly-phase filter. This sensor includes a poly-phase filter designed to receive a divided clock, featuring passive elements that create one or more negative poles and positive zeros. Additionally, it incorporates a comparator for generating a reference clock by comparing the potentials of first and second filter voltages outputted from the poly-phase filter. The design also includes a phase frequency detector that outputs an up or down signal by comparing the phase of the reference clock to a comparison clock. Furthermore, a current supply unit is integrated to supply and integrate a charge current based on the up or down signal. The system also features an oscillator for outputting an oscillation signal, a divider for generating the divided and comparison clocks, and a buffer for inverting and non-inverting the divided clock.
Another significant patent is related to a transmitter and system that includes multiple transmission drivers. The transmitter is designed with a first transmission driver to drive a first transmission line according to a first input signal, a second transmission driver for a second line, and a third for a third line. It also features active inductor circuits coupled to the output terminals of each transmission driver, enhancing the overall performance of the transmission system.
Career Highlights
Woojun Choi has worked with prominent organizations such as SK Hynix Inc. and Yonsei University. His experience in these institutions has allowed him to develop and refine his innovative ideas, contributing to the advancement of technology in his field.
Collaborations
Some of his notable coworkers include Youngcheol Chae and Taewoong Kim. Their collaborative efforts have likely played a role in the successful development of his patents and innovations.
Conclusion
Woojun Choi stands out as an influential inventor in the realm of temperature sensing and transmission technologies. His patents reflect a deep understanding of complex systems and a dedication to innovation. His contributions continue to impact the technological landscape positively.