David B Eardley

Title: The Innovations of David B Eardley

Introduction

David B Eardley is a notable inventor based in Stanfordville, NY (US). He has made significant contributions to the field of technology, particularly in memory cell design. With a total of 8 patents to his name, Eardley has demonstrated a commitment to advancing the capabilities of electronic memory systems.

Latest Patents

Among his latest patents is the innovative design of a random access memory cell. This design features two memory cells that can be entirely fabricated in only two isolation beds. In one embodiment, each bed contains one lateral PNP and one vertical NPN transistor in a merged structure. To achieve faster switching speeds, the PNP transistors are cross-coupled as flip-flop transistors, while the NPN transistors serve as load transistors. A word select signal is applied to forward bias the base-emitter junctions of the NPN load transistors, generating a potential difference between bit lines coupled to the emitters of the PNP flip-flop transistors.

Another significant patent is the memory cell resistor device. This dynamic memory cell utilizes a low barrier Schottky contact at a drain region, eliminating the need for an external gating diode. The drain is separated from source and injector regions by a heavily doped N+ reach-through region extending to a heavily doped N+ blanket semiconductor. Holes injected into one of the separated regions are trapped by high-low junctions and are detected by sensing the source-drain current.

Career Highlights

David B Eardley is currently employed at International Business Machines Corporation, commonly known as IBM. His work at IBM has allowed him to explore and develop cutting-edge technologies in the field of memory systems. His innovative designs have contributed to the advancement of electronic devices and computing technology.

Collaborations

Eardley has collaborated with several notable professionals in his field, including Bernard A Denis and Richard Thomas Dennison. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

David B Eardley is a distinguished inventor whose work has significantly impacted the technology sector. His patents reflect a deep understanding of memory cell design and a commitment to innovation. Through his contributions at IBM and collaborations with other professionals, Eardley continues to push the boundaries of what is possible in electronic memory systems.