This inventor holds 2 USPTO granted patents. Top assignee: Garmin Corporation. Active years: 1992-1998.
Location History:
- Overland Park, KS (US) (1992)
- Lenexa, KS (US) (1998)
Company Filing History:
Years Active: 1992-1998
Title: Innovations of David D. Casey
Introduction
David D. Casey is a notable inventor based in Overland Park, Kansas. He has made significant contributions to the field of navigation technology, particularly in the development of GPS systems. With a total of 2 patents, his work has had a considerable impact on the industry.
Latest Patents
Among his latest patents is the "Dual Conversion GPS Frequency Converter." This invention provides a method to down-convert the frequency of incoming GPS signals. The converter utilizes first and second mixers, where the first mixer receives the incoming RF signal and a signal from a local oscillator. The local oscillator signal is amplified by a factor of 98 and then subtracted from the incoming RF signal to generate a first intermediate frequency signal (IF). This first IF signal is then processed by the second mixer, which further subtracts the local oscillator frequency to produce a second intermediate frequency signal. The final output is a frequency-converted signal that enhances GPS functionality.
Another significant patent is the "Precision Phase Shift System." This system is designed for navigation systems that utilize signals from global positioning satellites. It offers precise control over successive phase-shifting steps of output signals, allowing for accurate matching with corresponding object signals for subsequent decoding. This innovation is crucial for improving the reliability and accuracy of navigation systems.
Career Highlights
David D. Casey is currently employed at Garmin Corporation, a leading company in GPS technology and navigation solutions. His work at Garmin has allowed him to contribute to advancements in GPS technology, enhancing the user experience for navigation systems worldwide.
Collaborations
Throughout his career, David has collaborated with notable colleagues such as Paul K. Shumaker and Gary L. Burrell. These collaborations have fostered innovation and development in the field of navigation technology.
Conclusion
David D. Casey's contributions to GPS technology through his patents and work at Garmin Corporation highlight his importance as an inventor in the field. His innovations continue to shape the future of navigation systems, ensuring greater accuracy and reliability for users.