Jefferson H Harman

Title: Jefferson H Harman: Innovations in Magnetic Recording Technologies

Introduction

Jefferson H Harman, an influential inventor based in Thousand Oaks, California, has made significant contributions to the field of magnetic recording technologies. He holds a total of nine patents, showcasing his expertise in developing advanced systems for positioning magnetic recording heads.

Latest Patents

Among his latest patents, the "Filtered Average Servo Demodulator" addresses a critical aspect of magnetic tape operations. This innovation encompasses a track-following positioning system, utilizing filtered average servo demodulators to ensure the magnetic tape head remains aligned with the recorded tracks. The system generates servo error signals by detecting servo head signals that correspond to any displacement from a centerline. This provides a refined method for realigning the tape head in relation to the magnetic medium.

Another noteworthy invention is the "Servo Controlled Magnetic Head Positioner," which integrates a Terfenol-D magnetostrictive rod with a lever arm to achieve precise positioning of the magnetic recording head. This system enables the head to microposition based on an electromagnetic field, enhancing recording accuracy. The incorporation of a permanent magnet system further optimizes efficiency by reducing coil current requirements while allowing bi-directional motion.

Career Highlights

Harman has worked with several esteemed companies during his career, including Wangtek and Persci, Inc. His tenure in these firms has undoubtedly influenced the development of magnetic recording technologies.

Collaborations

Throughout his professional journey, Harman collaborated with notable coworkers such as G Randall Stevens and Hamid Baheri. These partnerships have played a vital role in advancing his inventive endeavors, contributing to the success of his patents and innovations.

Conclusion

Jefferson H Harman's impressive portfolio of patents and his dedication to enhancing magnetic recording technology underscore his significant impact on the industry. His innovative inventions continue to shape the future of data recording and retrieval, ensuring accurate and efficient performance in magnetic media applications.