Donald F Johann

Title: **Donald F. Johann – Prolific Inventor and Innovator in Optical Recording Technology**

Introduction

Donald F. Johann, a prominent inventor based in Palo Alto, California, has made significant contributions to the field of optical recording technology. With a remarkable portfolio consisting of six patents, Johann has demonstrated his expertise in developing innovative methodologies and apparatuses that enhance data storage and retrieval.

Latest Patents

Among his recent advancements are two notable patents that showcase his inventive capabilities. The first is an "Apparatus and method for setting a threshold level to maintain duty." This technology pertains to an optical recording device that efficiently determines bit positions of digital data using pulse width modulation. The device reads patterns from an optical medium, employing a feedback circuit to adjust the threshold voltage based on the patterns detected, ultimately enhancing the accuracy of data retrieval.

The second patent, "Charge pump for restoring DC in an optical recording read channel," details an optical recording system designed to maintain a constant DC level in read signals. This invention involves a differentiator and a DC restore circuit that analyzes the read signal to ensure valid pulse detection, which improves the reliability of the data being read.

Career Highlights

Throughout his career, Donald F. Johann has held influential positions in notable companies, including Maxoptix Corporation and Sperry Rand Corporation. His work at these organizations has been pivotal in advancing optical technology and solidifying his reputation as a leading inventor in the industry.

Collaborations

In his journey as an inventor, Johann has collaborated with esteemed professionals in the field, including Charles E. Mendenhall and Alan Claude Burroughs. These partnerships have facilitated a creative exchange of ideas and technical expertise, culminating in groundbreaking innovations that continue to influence optical recording technology.

Conclusion

Donald F. Johann's work exemplifies the spirit of innovation and a commitment to pushing the boundaries of technology. His patents not only contribute to the realm of optical recording but also serve as a testament to his ingenuity and dedication to his craft. As the field continues to evolve, Johann's inventions will undoubtedly leave a lasting impact on future developments in data storage solutions.