Location History:
- San Francisco, CA (US) (1994)
- Hillsborough, CA (US) (1999)
Company Filing History:
Years Active: 1994-1999
Title: The Innovations of Darrell L Mathis
Introduction
Darrell L Mathis is a notable inventor based in San Francisco, CA. He has made significant contributions to the field of navigation systems, holding 2 patents that showcase his innovative approach to technology. His work primarily focuses on utilizing GPS data for tracking and navigation purposes.
Latest Patents
One of Mathis's latest patents is a navigation system using GPS data. This system is designed for tracking objects, such as automobiles, as they move over streets. It employs an electronic map and a GPS receiver that accepts data from multiple satellites to determine the position and velocity of the object. The system assesses the reliability of the GPS data based on various factors, including the previous position of the object and the continuity of satellite data. If deemed reliable, the object's position is updated accordingly and matched to a map of roads.
Another significant patent is the combined relative and absolute positioning method and apparatus. This navigation system integrates a relative positioning system (RPS) with dead reckoning and map matching, alongside an absolute positioning system (APS). The APS may utilize Loran-C or GPS technology, and the system operates by updating the RPS position based on the current APS position. Different criteria are applied for resetting the RPS depending on the precision levels of the Loran-C and GPS systems.
Career Highlights
Darrell L Mathis has been associated with Etak, Inc., where he has contributed to the development of advanced navigation technologies. His work has played a crucial role in enhancing the accuracy and reliability of navigation systems.
Collaborations
Mathis has collaborated with notable individuals in his field, including Richard Frederick Poppen and Kenneth Alan Milnes. These collaborations have further enriched his work and contributed to the advancements in navigation technology.
Conclusion
Darrell L Mathis is a distinguished inventor whose work in navigation systems has paved the way for more reliable tracking technologies. His patents reflect a deep understanding of GPS technology and its applications in real-world scenarios.