Company Filing History:
2 out of 2 
1 out of 12 
1 out of 2,729 
Years Active: 1981-1989
Title: The Innovations of Roger A. Marin
Introduction
Roger A. Marin is a notable inventor based in Portland, Oregon, with a significant contribution to the field of video signal processing. He holds four patents that showcase his expertise and innovative spirit. His work has had a lasting impact on video technology, particularly in the areas of synchronization and signal processing.
Latest Patents
One of Marin's latest patents is the "Vertical Blanking Interval Standardizer Circuit." This invention detects the vertical synchronization interval of a video signal and generates a vertical block sync pulse, which replaces a serrated vertical sync signal modified in a non-standard manner. The circuit generates early and late control pulses that pre-bias an amplitude limiter transistor, effectively blocking pulses during the vertical blanking interval that exceed a selected blanking level.
Another significant patent is related to a "Video Circuitry" that separates chrominance and luminance signals for processing. This circuit allows for the adjustment of video signals with selected levels, color saturation, and chroma hue while maintaining the integrity of the synchronizing information. The output circuit ensures a stable output with low distortion through a negative feedback mechanism.
Career Highlights
Throughout his career, Roger A. Marin has worked with several companies, including Vidicraft, Inc. and Xantech Corporation. His experience in these organizations has contributed to his development as an inventor and has allowed him to refine his skills in video technology.
Collaborations
Marin has collaborated with notable individuals in the industry, including James A. Karlock and David J. Jurgensen. These collaborations have likely enriched his work and provided valuable insights into the field of video signal processing.
Conclusion
Roger A. Marin's contributions to video technology through his patents demonstrate his innovative capabilities and dedication to advancing the field. His work continues to influence video signal processing, making him a significant figure in the realm of invention.