James A Sills

Title: Innovations of James A. Sills

Introduction

James A. Sills is a notable inventor based in San Antonio, Texas. He has made significant contributions to the field of communications and ultrasonic wave analysis. With a total of two patents to his name, Sills has demonstrated his expertise and innovative thinking in his work.

Latest Patents

One of Sills' latest patents is a "Signal Recognizer for Communications Signals." This invention is capable of classifying various commonly used communications signals. The recognizer operates with multiple modules that can function in parallel, each dedicated to a different signal type. Each module estimates parameters of a detected signal, which are then used for demodulating the input signal. The demodulated symbols undergo hypothesis testing, allowing the module to identify a candidate signal type. A "false alarm" test is conducted to evaluate the likelihood of the signal being misclassified. The confidence data collected from all modules is analyzed to determine the best candidate signal type and its parameters.

Another significant patent is the "Apparatus and Method for Analysis of Guided Ultrasonic Waves." This invention involves using guided waves to locate flaws in inspected objects. An ultrasonic guided wave is launched into the object, and the reflected wave is sampled to capture individual waveforms. These waveforms are partitioned based on sampling time and compared with a reference waveform that models the expected shape of reflected waves from potential flaws. A high correlation between the shapes indicates the presence of a real flaw at the theoretical location.

Career Highlights

James A. Sills is affiliated with the Southwest Research Institute, where he applies his innovative ideas to real-world challenges. His work has significantly advanced the understanding and application of communications technology and ultrasonic analysis.

Collaborations

Sills has collaborated with notable colleagues, including Q. Robert Black and Christian J. Schwartz. Their combined expertise has contributed to the success of various projects and innovations.

Conclusion

James A. Sills is a distinguished inventor whose work in communications and ultrasonic wave analysis has led to valuable patents. His contributions continue to impact the field positively, showcasing the importance of innovation in technology.