Stephen C Johnson

Title: The Innovations of Stephen C Johnson

Introduction: Stephen C Johnson is a notable inventor based in Waltham, MA (US). He has made significant contributions to the field of information processing systems. His work primarily focuses on enhancing the efficiency and reliability of control units through innovative designs.

Latest Patents: Johnson holds a patent for a "Control sequencer with dual microprogram counters for microdiagnostics." This invention features a microprogrammed control unit that allows for simultaneous microdiagnostics and macroprogram execution. The microdiagnostics include background and operability tests, which are interleaved with macroinstruction operations. The design enables background tests to run during processor idle time, while operability tests are executed at processor turn-on. The hierarchical organization of microdiagnostics allows for the same microprogrammed test module to be utilized for both types of tests. Additionally, a prediction/residual coding technique is employed for fault detection within the control sequencer.

Career Highlights: Johnson is currently associated with Raytheon Company, where he continues to innovate and contribute to advancements in technology. His work has been instrumental in developing systems that enhance the performance and reliability of information processing.

Collaborations: Throughout his career, Johnson has collaborated with esteemed colleagues, including James K Mathewes, Jr and Jan S Hermam. These collaborations have fostered an environment of innovation and have led to the development of groundbreaking technologies.

Conclusion: Stephen C Johnson's contributions to the field of information processing systems exemplify the impact of innovative thinking in technology. His patent and work at Raytheon Company highlight his commitment to advancing the industry.