Keith L Petry

Title: Innovations by Keith L. Petry

Introduction

Keith L. Petry is an accomplished inventor based in North Reading, MA, with a notable contribution to the field of technology. He holds two patents that showcase his expertise in on-board diagnostic systems and power-on sequencing apparatus. His work has significantly impacted the way systems are tested and diagnosed.

Latest Patents

One of Petry's latest patents focuses on on-board diagnostic testing. This invention involves a processing unit that connects to a system bus and includes a microprocessor tightly coupled to a local memory. The processing unit also features an addressable electrically erasable programmable read-only memory (EEPROM) unit, which stores on-board diagnostic routines and boot routines in separate regions. The OBD routines are organized into various categories, allowing for efficient testing and identification of failures. The system provides an index into a test dictionary, indicating specific components that may have failed during testing.

Another significant patent by Petry is related to power-on sequencing apparatus for initializing and testing a system. This invention also involves a processing unit that connects to a system bus and includes a microprocessor with local memory. The EEPROM unit in this patent stores both on-board diagnostic routines and operating system boot routines. The control circuits condition the EEPROM unit to execute OBD routines at power-up, ensuring that the processing unit operates correctly before loading the operating system.

Career Highlights

Keith L. Petry is currently employed at Bull Hn Information Systems, Inc., where he continues to innovate and contribute to advancements in technology. His work has been instrumental in enhancing the reliability and efficiency of diagnostic systems.

Collaborations

Throughout his career, Petry has collaborated with notable colleagues, including Thomas S. Hirsch and James W. Keeley. These collaborations have fostered an environment of innovation and creativity, leading to significant advancements in their respective fields.

Conclusion

Keith L. Petry's contributions to technology through his patents demonstrate his commitment to innovation and excellence. His work in on-board diagnostic systems and power-on sequencing apparatus has paved the way for improved testing and diagnostics in various applications.