David N Hoogerwerf

Title: David N. Hoogerwerf: Innovator in Cellular Technology

Introduction

David N. Hoogerwerf is a distinguished inventor based in Everett, WA, with an impressive portfolio of four patents to his name. His work has primarily focused on advancements in cellular technology, particularly in the areas of transmitter identification and channel security.

Latest Patents

One of Hoogerwerf's latest patents is titled "Active waveform collection for use in transmitter identification." This innovative method and system enable the rapid collection of reference waveforms from numerous cellular telephones. These waveforms create unique fingerprints, allowing for the differentiation between authorized and unauthorized devices within a cellular network. The process involves polling a selected phone, which then transmits an RF signal revealing its distinct transmission characteristics. Repeated polling ensures a robust fingerprint can be created for precise identification.

Another significant contribution is his patent on "Detection and prevention of channel grabbing in a wireless environment." This system monitors RF signals to detect unauthorized access in cellular networks. It identifies potential voice channel grabbing attempts by analyzing call processing data and looking for anomalies in RF signals. When suspicious activity is noticed, such as unexpected changes in signal characteristics, the system can prevent unauthorized connections, thereby enhancing network security.

Career Highlights

David N. Hoogerwerf has made a notable impact at Cellular Technical Services Company, Inc., where he applies his expertise to developing innovative communication solutions. His work has garnered recognition within the industry, reflecting his commitment to advancing cellular technology.

Collaborations

Throughout his career, Hoogerwerf has collaborated with other talented professionals, including coworkers David M. Stanhope and Evan R. Green. These partnerships have likely contributed to the development and refinement of his groundbreaking inventions.

Conclusion

David N. Hoogerwerf continues to be a pivotal figure in innovation within the cellular technology field. With his expert contributions and commitment to enhancing network security and device identification, his patents represent significant advancements in reliable communication systems. As technology continues to evolve, the impact of his work will likely resonate throughout the industry.