Alan R Desroches

Title: Innovations of Alan R Desroches

Introduction

Alan R Desroches is a notable inventor based in San Jose, CA. He has made significant contributions to the field of electronics, holding a total of 7 patents. His work primarily focuses on improving data transmission and noise immunity in electronic circuits.

Latest Patents

One of his latest patents is titled "Source synchronous link with data and clock signals having the same electrical characteristics." This invention outlines methods and apparatus for halting data strobes transmitted over a source synchronous link. It enables the data stored in the data capture flip-flops in a source synchronous receiver to be scanned out for subsequent analysis. This innovation allows for the evaluation of captured data without adding components to the functional data path, thus avoiding increased latency in transmission. To optimize timing margins, the data and data strobe paths are logically and electrically matched. This includes routing the data and data strobe signals in close proximity from the transmitter to the receiver, ensuring that any injected link noise is experienced common-mode. Additionally, the data strobe signal is driven at one-half of the period of the data signal, ensuring that both signals experience logical state transitions simultaneously.

Another significant patent is for a "Circuit having increased noise immunity and capable of generating a reference voltage or terminating a transmission line." This invention features a voltage divider that suppresses noise in its output by filtering the voltages at the gate terminals of the transistors that comprise the voltage divider. In one embodiment, a PFET transistor is coupled between a voltage VDD and the voltage divider output, while an NFET transistor is coupled between a voltage VSS and the output. An RC filter is provided at each gate terminal of the transistors, effectively filtering out noise and eliminating the need for a capacitor between the voltage divider output and VSS.

Career Highlights

Alan has worked with prominent companies such as Hewlett-Packard Company and Hewlett-Packard Development Company, L.P. His experience in these organizations has contributed to his expertise in electronic innovations.

Collaborations

Throughout his career, Alan has collaborated with talented individuals, including Karen Lo and Jeffery A Benis. These collaborations have likely enriched his work and led to further advancements in his field.

Conclusion

Alan R Desroches is a distinguished inventor whose contributions to electronics have significantly impacted data transmission and noise immunity. His innovative patents reflect