Location History:
- Sudbury, MA (US) (2015)
- Lunenburg, MA (US) (2015)
Company Filing History:
Years Active: 2015
Title: James P Dumais: Innovator in Synchronous Data Systems
Introduction
James P Dumais is a notable inventor based in Sudbury, MA (US). He has made significant contributions to the field of synchronous data systems, holding 2 patents that showcase his innovative approach to technology. His work primarily focuses on enhancing the performance of oscillators and data systems.
Latest Patents
Dumais' latest patents include a "Phase lock loop with tracking filter for attenuating spurious signals of a swept local oscillator." This invention involves a high spectral purity swept local oscillator that incorporates a tracking filter. The output of a swept DDS oscillator is improved by filtering it with a band-pass filter that has an adjustable center frequency. This frequency is adjusted in real-time to track the instantaneous frequency of the DDS oscillator. The tracking is achieved by comparing the phase at the output of the band-pass filter to the phase at its input, feeding back a signal corresponding to the phase difference measured by a phase comparator.
Another significant patent is the "Synchronous data system and method for providing phase-aligned output data." This invention describes a synchronous data system that includes multiple transmitter-receiver (TX-RX) pairs, each associated with a delay-locked loop (DLL). The DLL minimizes the phase error between the system clock and the module clock, ensuring that the high-speed clocks of each TX-RX pair are edge-aligned.
Career Highlights
James P Dumais is currently employed at Raytheon Company, where he continues to develop innovative solutions in the field of data systems. His work has been instrumental in advancing technologies that require precise timing and synchronization.
Collaborations
Dumais has collaborated with notable coworkers, including Jack Lee and Michael E Yeomans, contributing to various projects that enhance the capabilities of synchronous data systems.
Conclusion
James P Dumais is a distinguished inventor whose work in synchronous data systems has led to significant advancements in technology. His patents reflect a deep understanding of oscillators and data synchronization, making him a valuable asset in his field.
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