Company Filing History:
Years Active: 1998
Title: Douglas A Heerman: Innovator in Voice Privacy Technology
Introduction
Douglas A Heerman is a notable inventor based in Raymond, NE (US). He is recognized for his contributions to voice privacy technology, particularly through his innovative patent that enhances electronic voice transmission systems. His work focuses on creating methods that ensure secure communication by utilizing advanced digital signal processing techniques.
Latest Patents
Heerman holds a patent for a "Method and apparatus for performing frequency spectrum inversion." This invention involves an apparatus and method designed to create voice privacy by performing frequency spectrum inversion in electronic voice transmission systems. The process includes digitizing an analog signal and inverting the frequency spectrum of the digitized audio signal. From the inverted spectrum, a complex signal is created, from which the real component is extracted to produce a real signal suitable for transmitting. The digital signal processing is performed entirely with software, and the scrambling and descrambling processes are nearly identical, allowing the same hardware and software to be used for both functions. Additionally, the apparatus may utilize a 'rolling code' to enhance the effectiveness of the scrambling.
Career Highlights
Heerman is associated with Transcrypt International, Inc., where he applies his expertise in voice privacy technology. His work at the company has contributed to advancements in secure communication systems, making significant impacts in the field of electronic voice transmission.
Collaborations
[This section has been skipped due to space constraints.]
Conclusion
Douglas A Heerman's innovative work in voice privacy technology exemplifies the importance of securing electronic communications. His patent and contributions to Transcrypt International, Inc. highlight his role as a key figure in advancing methods for ensuring privacy in voice transmission systems.