Larry E Nielsen

Title: Larry E. Nielsen: Innovator in Signal Processing Technologies

Introduction

Larry E. Nielsen is a prominent inventor based in Chicago, IL (US), known for his significant contributions to signal processing technologies. With a total of 11 patents to his name, he has made remarkable advancements in the field, particularly in the area of video signal broadcasting.

Latest Patents

One of Larry's latest patents is focused on the removal of clock-related artifacts from an offset QAM generated VSB signal. This invention includes a transmitter arrangement and a receiver arrangement designed to detect and eliminate artifacts that can distort signal quality. In the transmitter, a detector identifies the artifacts, while a correlator assesses whether these artifacts repeat over two or four symbols. The processing circuits then adjust the I and Q signal components of the QAM signal to substantially eliminate these artifacts. In the receiver, the VSB signal is divided into four parallel signals, which are processed to develop an average symbol level that is subtracted before recombination. This innovative approach addresses both positive-going and negative-going artifacts, ensuring a clearer signal output.

Another notable patent is the self-calibrating demodulator system. This system utilizes a reference signal source to produce a distortion-free reference signal, which is then demodulated. A calibration filter and an equalizer are included to refine the signal further. The controller initially allows the reference signal to pass through without significant alteration and subsequently calibrates the filter based on the distortion reduced by the equalizer.

Career Highlights

Larry E. Nielsen has made a significant impact in his role at Zenith Electronics Corporation, where he has been instrumental in developing cutting-edge technologies in signal processing. His work has not only advanced the field but has also contributed to the overall improvement of broadcasting quality.

Collaborations

Throughout his career, Larry has collaborated with notable colleagues, including Gary J. Sgrignoli and Richard W. Citta. These partnerships have fostered innovation and have led to the successful development of various technologies in the industry.

Conclusion

Larry E. Nielsen's contributions to signal processing technologies have established him as a key figure in the field. His innovative patents and collaborative efforts continue to influence advancements in broadcasting and signal quality.