Company Filing History:
Years Active: 1984-1988
Title: Innovations of David D Chapman
Introduction
David D Chapman is a notable inventor based in Portland, OR (US). He has made significant contributions to the field of technology, particularly in the area of microprocessor analysis and memory management. With a total of six patents to his name, Chapman has demonstrated a commitment to advancing the capabilities of data acquisition systems.
Latest Patents
One of his latest inventions is the Transaction Analyzer. This device is designed to work with a data acquisition system that utilizes a probe to access binary data, such as address and control signals from an operating microprocessor. The Transaction Analyzer determines the type of processor transaction based on sequences of state changes in selected control signals. It generates a binary number representing the transaction type, which can be acquired by the acquisition system. The analyzer is programmable and can be used with various microprocessors, accommodating differing control line state change patterns.
Another significant patent is the Variable Tracking Word Recognizer. This device generates an indicating signal when a microprocessor accesses a memory stack location that stores a dynamically addressed variable. The recognizer monitors addresses on the microprocessor address bus and generates a signal when the current address matches the combination of a stored base address and a known offset. This invention enhances the efficiency of memory management in microprocessor operations.
Career Highlights
David D Chapman is currently employed at Tektronix, Inc., where he continues to innovate and develop new technologies. His work has had a profound impact on the field of data acquisition and microprocessor technology.
Collaborations
Some of his notable coworkers include Steven R Palmquist and Gerd H Hoeren. Their collaboration has likely contributed to the advancements in technology that Chapman has achieved.
Conclusion
David D Chapman is a distinguished inventor whose work in microprocessor technology and data acquisition systems has led to significant innovations. His patents reflect a deep understanding of complex systems and a commitment to enhancing technological capabilities.