Jim Lew

Title: Jim Lew - Innovator in Frequency Synthesis and Ethernet Applications

Introduction

Jim Lew is a notable inventor based in San Diego, CA. He has made significant contributions to the fields of frequency synthesis and Ethernet technology. With a total of 4 patents to his name, Lew continues to push the boundaries of innovation in his field.

Latest Patents

One of Jim Lew's latest patents is focused on frequency synthesis through rational division. This system and method allow for synthesizing signal frequencies by accepting a reference frequency value and a synthesized frequency value. The method determines an integer value numerator (dp) and an integer value denominator (dq) by dividing the synthesized frequency value by the reference frequency value. The ratio of dp/dq is reduced to an integer N and a ratio of p/q, where p/q is less than 1. The numerator (p) and the denominator (q) are then supplied to a flexible accumulator module, generating a divisor. In a phase-locked loop (PLL), this divisor and the reference signal are utilized to create a synthesized signal with a frequency equal to the synthesized frequency value.

Another significant patent by Lew involves differential inverse multiplexing virtual channels in 40G Ethernet applications. This system and method are designed for deinterleaving differential inverse multiplexed (DIM) virtual channels in a 40G Ethernet receiver. The method accepts a 10.3125 Gbps Ethernet virtual channel with 64B/86B blocks, including periodic Lane Alignment Marker (LAM) blocks. The 10G virtual channel is deinterleaved into two 5.15625 Gbps virtual channels by alternating the deinterleaving of consecutive blocks and reversing the order in response to each detected LAM block. The resulting 5G virtual channels are then supplied to a MAC module.

Career Highlights

Jim Lew is currently employed at Applied Micro Circuits Corporation, where he continues to innovate and develop new technologies. His work has had a significant impact on the industry, particularly in the areas of signal processing and Ethernet communications.

Collaborations

Throughout his career, Jim has collaborated with talented individuals such as Viet Linh Do and Hongming An. These collaborations have contributed to the successful development of his patented technologies.

Conclusion

Jim Lew is a distinguished inventor whose work in frequency synthesis and Ethernet applications has led to multiple patents.