John D Edwards

Title: Innovations of John D Edwards

Introduction

John D Edwards is a notable inventor based in Campbell, CA (US). He has made significant contributions to the field of telecommunications, holding a total of three patents. His work primarily focuses on improving the architecture of computerized branch exchanges, which are essential for modern communication systems.

Latest Patents

One of his latest patents is the "Time Division Multiplexed Computerized Branch Exchange." This invention presents an improved architecture for a computerized branch exchange, particularly for a time division multiplexed bus used in the exchange. The design includes a unidirectional source bus that receives signals from expanders and a unidirectional destination bus that transmits signals to the expanders. The expanders communicate with line cards that interface with telephone station sets and commercial lines. A time division multiplexed controller updates distributed connection tables in each expander and controls the flow of data onto and from the unidirectional buses. This innovative arrangement significantly reduces blocking issues associated with prior art bidirectional buses.

Another significant patent is the "Distributed CBX System Employing Packet Network." This invention describes a distributed CBX system that provides a virtual network between remotely located CBXs. These CBXs are connected to both a voice network and a packet network. The first CBX can interrogate a second CBX to determine the status of a called station over the packet network. If the called station is clear, the second CBX provides the number of a free incoming line, allowing the first CBX to place a call to both an available line and station.

Career Highlights

John D Edwards has had a distinguished career, working at Rolm Corporation, where he has been able to apply his innovative ideas in telecommunications. His contributions have played a crucial role in advancing communication technologies.

Collaborations

Throughout his career, Edwards has collaborated with notable colleagues, including Michael D Jabara and Charles H Jolissaint. These collaborations have further enriched his work and contributed to the development of advanced telecommunications solutions.

Conclusion

John D Edwards is a prominent inventor whose work has significantly impacted the telecommunications industry. His innovative patents demonstrate his commitment to improving communication technologies and enhancing the efficiency of branch exchanges.