This inventor holds 2 USPTO granted patents. Top assignee: Ampex Corporation. Active years: 1985-1991.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1985-1991
Title: Innovations of David A Petersen
Introduction
David A Petersen is a notable inventor based in Berkeley, California. He has made significant contributions to the field of technology, particularly in magnetic recording and digital signal processing. With a total of two patents to his name, Petersen's work has had a lasting impact on the industry.
Latest Patents
Petersen's latest patents include a thin film magnetic head with improved flux concentration for high-density recording. This invention involves structures of magnetic heads that utilize superconducting shields to spatially direct magnetic recording and playback fields. One embodiment features a thin film magnetic head with a layer of superconductor material associated with its throat. Additional embodiments provide intertrack shielding and enhance the concentration of recording and playback fields into relatively small pole tip regions.
Another significant patent is for a digital maximum likelihood detector designed for Class IV partial response signaling. This high-speed all-digital detector operates at speeds of at least 120 megabits per second. It is based on the recognition that 1-D² filters correspond to a pair of 1-D filters responsive to alternate bits. The detector includes a decision-making circuit for maximum likelihood sequence estimation (MLSE) that efficiently processes current signal samples and stores decisions for later retrieval.
Career Highlights
David A Petersen is currently employed at Ampex Corporation, where he continues to innovate and develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of magnetic recording and digital detection systems.
Collaborations
Petersen has collaborated with notable colleagues, including Raghavan K Pisharody and Sidney D Miller. Their combined expertise has contributed to the success of various projects and innovations within the company.
Conclusion
David A Petersen's contributions to technology through his patents and work at Ampex Corporation highlight his role as a significant inventor in the field. His innovations in magnetic recording and digital signal processing continue to influence the industry today.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile