This inventor holds 6 USPTO granted patents. Top assignees: Rockwell International Corporation, Rockwell Collins, Inc.. Active years: 1992-2012.
Company Filing History:
4 out of 3,430 
2 out of 3,017 
Years Active: 1992-2012
Title: Christopher J Swanke: Innovator in Noise Cancellation and Signal Processing
Introduction
Christopher J Swanke is a notable inventor based in Cedar Rapids, IA (US). He holds a total of 6 patents that showcase his expertise in noise cancellation and signal processing technologies. His innovative contributions have significantly impacted the fields of equipment cooling and communication systems.
Latest Patents
One of Swanke's latest patents focuses on audible fan noise cancellation. This invention provides methods for the cancellation or substantial reduction of fan noise typically encountered in equipment cooling applications. By adjusting fan velocity and/or phase, local audio nulls can be created to minimize fan noise near an operator. Feedback techniques are utilized, where a microphone located near the operator helps create an area of audio nulling. Additionally, local audio nulls can be achieved by manipulating fan phase and velocity through a controller that considers the fixed positions of both the equipment and the operator.
Another significant patent by Swanke is related to direct sequence spread spectrum communications. This method efficiently excises one or more narrow-band interfering signals in a direct sequence spread spectrum receiver. It performs magnitude spectral analysis on baseband signals to identify frequency bins containing interfering signals. By comparing signal magnitudes to a threshold, corrupted frequency bins are determined, allowing band reject filters to excise the narrow-band signals effectively.
Career Highlights
Throughout his career, Christopher J Swanke has worked with prominent companies such as Rockwell International Corporation and Rockwell Collins, Inc. His experience in these organizations has contributed to his development as an inventor and innovator in his field.
Collaborations
Swanke has collaborated with notable coworkers, including Steven L White and Larry P Hanson. Their collective expertise has likely fostered an environment of innovation and creativity in their projects.
Conclusion
Christopher J Swanke is a distinguished inventor whose work in noise cancellation and signal processing has led to significant advancements in technology. His patents reflect a commitment to improving equipment performance and communication systems.