Sheau Jiung Lee

Title: Innovations by Sheau Jiung Lee in Chip-to-Chip Communication

Introduction

Sheau Jiung Lee is a prominent inventor based in Saratoga, CA, known for his contributions to chip-to-chip communication technologies. With a total of 5 patents, he has made significant advancements in the field, particularly in reducing latency and power consumption in integrated circuits.

Latest Patents

One of his latest patents is titled "Differential current mode low latency modulation and demodulation for chip-to-chip connection." This invention presents a chip-to-chip communications circuit that is particularly well-suited for short-range communication, typically less than a few inches, between integrated circuits. The circuit utilizes multi-frequency quadrature amplitude modulation (QAM) mechanisms to convert digital data bits from a parallel form into a serial analog stream for communication over a chip I/O connection. The use of differential current mode modulation in the transmitter and demodulation in the receiver significantly reduces latency and power consumption while enhancing manufacturing yields and resilience to process variations.

Another notable patent is "Phase synchronization of modulation or demodulation for QAM-based multiband TSV-link." This invention also focuses on chip-to-chip communications, specifically for short-range wired RF communication. Similar to his previous work, it employs multi-frequency QAM mechanisms for data conversion. During a phase calibration cycle, a phase adjustment controller in the transmitter works in conjunction with a phase adjustment controller in the receiver to adjust a phase locked-loop (PLL) circuit, correcting for phase delays that occur due to signal propagation between the transmitter and receiver.

Career Highlights

Sheau Jiung Lee is affiliated with the University of California, where he continues to innovate and contribute to the field of integrated circuit communications. His work has garnered attention for its practical applications in enhancing communication efficiency between chips.

Collaborations

Throughout his career, Lee has collaborated with notable colleagues, including Mau-Chung Frank Chang and Yanghyo Kim. These partnerships have further enriched his research and development efforts in the field.

Conclusion

Sheau Jiung Lee's innovative work in chip-to-chip communication has led to significant advancements in the efficiency and effectiveness of integrated circuits. His contributions are paving the way for future developments in this critical area of technology.