John W Hartman

Title: The Innovations of John W. Hartman

Introduction

John W. Hartman is a notable inventor based in LaGrangeville, NY (US). He has made significant contributions to the field of integrated circuit technology. His work primarily focuses on preventing oscillation during the testing of integrated circuit logic chips.

Latest Patents

Hartman holds a patent for "Oscillation prevention during testing of integrated circuit logic chips." This invention addresses the issue of oscillation that often occurs during testing due to the large unbypassed inductance of the test fixture. The oscillation can lead to off-chip driver switching noise being fed back to the logic chip power supply. To mitigate this, Hartman’s patent introduces an inhibit receiver and an off-chip driver inhibit network. This network ensures that each off-chip driver is forced to the same logical state in response to an inhibit signal, thereby preventing oscillation during critical testing phases.

Career Highlights

Hartman is associated with the International Business Machines Corporation (IBM), where he has contributed to various projects in integrated circuit technology. His innovative approach has led to advancements in the reliability and performance of logic chips.

Collaborations

Throughout his career, Hartman has worked alongside esteemed colleagues such as Charles W. Cha and David A. Kiesling. Their collaborative efforts have further enhanced the development of technologies in the field.

Conclusion

John W. Hartman’s contributions to the field of integrated circuits demonstrate his innovative spirit and dedication to improving technology. His patent for oscillation prevention is a testament to his expertise and impact in the industry.