Warren L Hall

Title: Warren L Hall: Innovator in Electrostatographic Technology

Introduction

Warren L Hall is a notable inventor based in Palos Verdes, CA, who has made significant contributions to the field of electrostatographic technology. With a total of 3 patents to his name, Hall has developed innovative solutions that enhance the functionality and efficiency of various machines.

Latest Patents

One of Hall's latest patents is the "Open Loop Fuser Control." This invention features a controller with dedicated fuser circuitry and a processor designed to control the fuser heating element. The dedicated circuitry connects an input voltage source to the processor through a low voltage power supply, providing both a reference signal and a sample DC voltage signal representative of the input voltage source. The processor generates a digital signal to activate a triac connected to the fuser heating element, allowing for selective gating of the input voltage across the heating element. This system offers multiple ranges of digital signals and corresponding triac activation rates to accommodate variations in input voltage.

Another significant patent is the "Direct Memory Access Module for a Controller." This invention pertains to a controller for a host machine, such as an electrostatographic copier, which includes a central processing unit module connected via a system bus to an input-output processing unit module. The direct memory access system provides a high-speed means of refreshing and updating control registers in the host machine by directly accessing memory in the central processing unit module. This innovation allows for synchronous and asynchronous refresh-updating of control registers, ensuring efficient operation even during electrical disturbances.

Career Highlights

Warren L Hall has had a distinguished career at Xerox Corporation, where he has applied his expertise in developing advanced technologies. His work has significantly impacted the efficiency and performance of electrostatographic machines.

Collaborations

Throughout his career, Hall has collaborated with notable colleagues, including George E Mager and Frank M Nelson. These partnerships have contributed to the advancement of technology in their field.

Conclusion

Warren L Hall's contributions to electrostatographic technology through his innovative patents demonstrate his commitment to enhancing machine performance. His work continues to influence the industry and inspire future innovations.