Company Filing History:
Years Active: 2001-2009
Title: Innovations of James P. Stephens, Sr.
Introduction
James P. Stephens, Sr. is a notable inventor based in Bellbrook, OH (US). He has made significant contributions to the field of digital signal processing and communication technologies. With a total of 3 patents to his name, his work has had a considerable impact on the industry.
Latest Patents
One of his latest patents is the "Bit Error Tester," which is a method and device for comparing two generic digital signals over a wide range of data rates. This invention counts the number of bit errors between digital signals under conditions of noise and jamming. The bit error tester compares the digital signal sent with the digital signal received back from the unit under test and outputs the error signal. In the preferred arrangement, a field programmable gate array is utilized along with a switch and LED display to introduce and monitor a time delay in the sent signal, ensuring that the signals are in time alignment prior to comparison.
Another significant patent is for a "Direct Sequence Spread Spectrum Using Non-Antipodal Phase Shift Keying." This invention simplifies the reception process and reduces the cost of spread spectrum transceiver devices and methods. The transmitting portion of the transceiver antipodally modulates a pseudorandom code and non-antipodally modulates binary bit data onto a carrier wave. The receiving portion performs a mathematical squaring function on the received signal combination of pseudorandom code and data. This innovation eliminates the need for storing or generating a local reference for the spreading code, greatly simplifying receiver circuitry and allowing for low energy density and operational costs.
Career Highlights
James P. Stephens, Sr. is currently associated with the United States of America as represented by the Secretary of the Air Force. His work has been instrumental in advancing technologies that enhance communication systems and improve signal processing capabilities.
Collaborations
Throughout his career, he has collaborated with notable individuals such as Robert S. Parks and Gary H. Kaufman. These collaborations have contributed to the development of innovative solutions in the field.
Conclusion
James P. Stephens, Sr. is a distinguished inventor whose contributions to digital signal processing and communication technologies have made a lasting impact. His innovative patents reflect his expertise and commitment to advancing the field.