Swee Chuen Hoo

Title: Swee Chuen Hoo: Innovator in Digital Phase Locked Loop Systems

Introduction

Swee Chuen Hoo is a notable inventor based in Singapore, recognized for his contributions to the field of digital phase locked loop (PLL) systems. His innovative work has led to the development of a patent that enhances the performance of PLL control systems.

Latest Patents

Swee Chuen Hoo holds a patent for a "Digital phase locked loop (PLL) system and method with phase tracing." This patent describes a PLL control system that incorporates a phase tracer module to minimize lock time and reduce output clock jitter. The system generates a second clock signal by dividing the frequency of a reference clock signal. A feedback clock signal is produced based on a high-frequency clock signal from a digitally controlled oscillator (DCO) and a PLL feedback divide number. The lead/lag determination circuitry generates a detection result indicating whether the feedback clock signal leads or lags the second clock signal. Additionally, a skew digitizer digitizes the skew between the falling edge of the second clock signal and the rising edge of the feedback clock signal to create a skew signal. The phase tracer module processes the lead/lag detection result and the skew signal to generate a digital control signal that adjusts the cycle time of the DCO, thereby changing the frequency of the high-frequency clock signal.

Career Highlights

Swee Chuen Hoo is currently employed at Globalfoundries Singapore Pte. Ltd., where he continues to innovate in the field of semiconductor technology. His work has significantly contributed to advancements in PLL systems, showcasing his expertise and commitment to technological progress.

Collaborations

Throughout his career, Swee Chuen Hoo has collaborated with talented individuals such as Zhihong Luo and Yi Liang, who have contributed to his projects and innovations.

Conclusion

Swee Chuen Hoo's work in digital phase locked loop systems exemplifies the impact of innovative thinking in technology. His patent reflects a significant advancement in PLL control systems, demonstrating his role as a key inventor in this field.