Company Filing History:
Years Active: 1987
Title: John F Crush: Innovator in Differential Phase Modulation
Introduction
John F Crush is a notable inventor based in Levittown, NY (US). He has made significant contributions to the field of signal modulation, particularly through his innovative patent in differential phase modulation. His work has implications for various communication technologies.
Latest Patents
John F Crush holds a patent for a method of differential phase modulation. This invention involves sampling the amplitude of a signal to be modulated on a carrier wave every T seconds. The sampled amplitudes are then converted into phase representative pulses at a pulse rate of 1/T. Each pulse corresponds to the difference between a first phase related to the sampled amplitude and the phase of the Nth previous pulse, where N is an integer greater than 1. The discrete phase representative pulses are then modulated onto the carrier wave. The conversion process includes detecting the sampled amplitudes and using them as an address to a ROM to provide corresponding differential phase information. To demodulate the signal, the carrier wave is delayed for NT seconds, and the delayed signals are subtracted from the undelayed signals. The resulting signal is linearly detected by an envelope detector to develop an output signal that represents the original modulating signal. This patent showcases his innovative approach to improving signal processing.
Career Highlights
John F Crush has worked at Hazeltine Corporation, where he has been able to apply his expertise in signal modulation. His career at this company has allowed him to contribute to advancements in communication technologies.
Collaborations
Throughout his career, John has collaborated with notable coworkers such as Frank M Torre and Raymond J Masak. These collaborations have likely enriched his work and contributed to the development of innovative solutions in his field.
Conclusion
John F Crush is a distinguished inventor whose work in differential phase modulation has made a significant impact on communication technologies. His innovative patent and contributions at Hazeltine Corporation highlight his role in advancing the field.