Allen C Hirtle

Title: The Innovations of Allen C Hirtle

Introduction

Allen C Hirtle is a notable inventor based in Needham, MA (US). He has made significant contributions to the field of data processing and communication systems. With a total of 5 patents to his name, Hirtle's work has had a lasting impact on technology.

Latest Patents

One of Hirtle's latest patents is the "Communication multiplexer variable priority scheme." This invention involves a communication multiplexer that stores the receive and transmit channel numbers of input/output devices connected by communication lines in a first-in-first-out (FIFO) memory. The input/output devices are polled by sending the channel numbers from the FIFO to the devices. An input/output device requesting service responds to its channel number, while the remaining channel numbers in the FIFO are recirculated to prioritize receive channel numbers over transmit channel numbers. This design gives high priority to the most recently used receive channel operating in burst mode and equal priority to all transmit channels.

Another significant patent is the "Trace method and apparatus for use in a data processing system." This system includes mechanisms that operate when the system is in trace mode during program instruction processing. It records the op code of each instruction designated as executable by referencing a table before instruction execution begins. If an instruction's op code is not executable, the system traps the instruction and generates a call to the operating system software without recording its op code. This selective recording and trapping of instruction operation codes facilitate the diagnosis of program errors or faults, which is particularly valuable when the system includes emulation apparatus that may not be fully compatible with the system being emulated.

Career Highlights

Hirtle has worked at Honeywell Information Systems Inc., where he has been able to apply his innovative ideas and contribute to the advancement of technology. His work has been instrumental in developing systems that enhance communication and data processing capabilities.

Collaborations

Some of Hirtle's notable coworkers include David B O'Keefe and Gary J Goss. Their collaboration has likely contributed to the success of various projects and innovations within the company.

Conclusion

Allen C Hirtle's contributions to the field of technology through his patents and work at Honeywell Information Systems Inc. highlight his role as a significant inventor. His innovative solutions continue to influence the development of communication and data processing systems.