Lian-Chun Xu

Title: Lian-Chun Xu: Innovator in Signal Processing and Optical Transducers

Introduction

Lian-Chun Xu is a notable inventor based in Singapore, recognized for his contributions to signal processing and optical transducer technologies. With a total of 5 patents, he has made significant advancements in the field, particularly in the areas of amplitude modulation and noise control.

Latest Patents

One of Lian-Chun Xu's latest patents is a "System and method for demodulating amplitude modulated signals." This innovative system utilizes two comparators and a charge pump circuit to produce a demodulated signal from amplitude modulated input signals. The design is particularly useful in infrared remote control receivers, where the first comparator converts the input signal from a waveform to a pulse form. The charge pump circuit then transforms the pulse signal into an integrated signal in a triangular pulse form, which is subsequently converted into a rectangular pulse form by the second comparator to yield the final demodulated signal.

Another significant patent is for "Variable noise control for an optical transducer." In this invention, an optical transducer generates an output signal that reflects optical irradiance. A noise control circuit is integrated into the power supply path of the optical transducer, allowing for dynamic adjustments to the noise control based on the output signal. This adaptability can be achieved through various methods, including turning the noise control on or off, or varying it in discrete or continuous steps.

Career Highlights

Lian-Chun Xu has worked with prominent companies such as Avago Technologies and Lite-On Technology Corporation. His experience in these organizations has contributed to his expertise in developing innovative solutions in signal processing and optical technologies.

Collaborations

Throughout his career, Lian-Chun Xu has collaborated with talented individuals, including Kok-Soon Yeo and Chee-Keong Teo. These partnerships have likely fostered a creative environment that has led to the development of his impactful inventions.

Conclusion

Lian-Chun Xu's work exemplifies the spirit of innovation in the fields of signal processing and optical transducers. His patents reflect a commitment to advancing technology and improving the functionality of electronic devices. His contributions continue to influence the industry and inspire future innovations.