Location History:
- Sagamore Hills, OH (US) (1997)
- Painesville, OH (US) (1999)
Company Filing History:
Years Active: 1997-1999
Title: Innovations by Brian D Hemphill
Introduction
Brian D Hemphill is an accomplished inventor based in Sagamore Hills, OH. He has made significant contributions to the field of digital signal processing and capacitance measurement. With a total of 2 patents to his name, Hemphill continues to push the boundaries of technology.
Latest Patents
One of his latest patents is a low power digital signal isolator. This innovative device utilizes a first photo-coupler activated by the differential pulse at the leading edge of a digital signal and a second photo-coupler activated by the trailing edge. A positive feedback system is integrated to produce an output digital signal that corresponds to the input. This system ensures stability even when both photo-couplers are non-conductive.
Another notable patent is a method and apparatus for measuring changes in capacitance values. This invention calculates a ratio, R, based on the inverse relationship between two capacitance values. The method involves applying an AC voltage to a common electrode shared by two capacitors, which generates AC current signals. These signals are then converted to frequency signals, allowing a microprocessor to calculate the desired ratio.
Career Highlights
Brian D Hemphill is currently employed at Elsag International N.V., where he applies his expertise in developing innovative solutions. His work has significantly impacted the field of electronics and signal processing.
Collaborations
Hemphill collaborates with Joseph C Nemer, leveraging their combined knowledge and skills to advance their projects.
Conclusion
Brian D Hemphill is a notable inventor whose work in digital signal processing and capacitance measurement showcases his innovative spirit. His contributions continue to influence the technological landscape.