Douglas Michael Hannan

Title: Innovations of Douglas Michael Hannan

Introduction

Douglas Michael Hannan is an accomplished inventor based in Gray, ME (US). He holds a total of 4 patents that showcase his expertise in the field of electrical engineering and signal processing. His innovative contributions have significantly advanced technology in various applications.

Latest Patents

One of Hannan's notable inventions is an apparatus and method for detecting a fault condition in a common-mode signal. This invention is designed to generate a fault detection signal when a differential signal experiences a fault condition. The fault condition can occur when the data transmission path in a differential signaling device is open, shorted, or improperly terminated. The invention effectively buffers the differential signal source and produces an intermediate signal in response to the differential signal. By comparing portions of this intermediate signal to a reference signal, fault condition control signals are generated, leading to the production of a fault detection signal that can invoke a failsafe state.

Another significant patent by Hannan is the output differential voltage (VOD) restriction circuit for use with LVDS input buffers. This method and apparatus restrict the differential output voltage for an LVDS input buffer, ensuring that VOD does not exceed a predetermined threshold. The invention maintains the input and output common-mode voltage, as well as the input and output differential voltage swing, during the VOD restriction. This innovation reduces output jitter of the LVDS input buffer, resulting in a more robust LVDS system compared to those without a VOD restriction circuit.

Career Highlights

Hannan is currently employed at National Semiconductor Corporation, where he continues to contribute to advancements in semiconductor technology. His work has been instrumental in developing solutions that enhance the performance and reliability of electronic devices.

Collaborations

Throughout his career, Hannan has collaborated with notable colleagues, including Roy L. Yarbrough and David Jamie Haas. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Douglas Michael Hannan's contributions to the field of electrical engineering through his patents demonstrate his commitment to innovation and excellence. His work continues to impact the industry positively, paving the way for future advancements in technology.