James J Riches

Title: Innovations of James J Riches

Introduction

James J Riches is a notable inventor based in Lake Worth, FL (US). He has made significant contributions to the field of electronics, particularly in the development of advanced filtering and signal processing technologies. With a total of 4 patents to his name, Riches continues to push the boundaries of innovation.

Latest Patents

Riches' latest patents include groundbreaking technologies that enhance the performance of analog filters and digital-to-analog converters. One of his notable inventions is a digital tuning system for controlling the bandwidth of an analog filter. This system utilizes digital synthesizers to produce a two-tone calibration signal, which is applied to the filter's input after increasing its quality factor. The filter design incorporates R/C circuits and arrays of capacitors to adjust the cutoff frequency effectively. The system measures the amplitude of the filter's responses to each tone using discrete Fourier transform circuits, allowing for optimal capacitance selection based on pre-selected values.

Another significant patent focuses on clock jitter minimization in a continuous time sigma delta analog-to-digital converter. This invention features a digital-to-analog converter that serves as a feedback converter, accepting synchronized digital signal samples. The design ensures that the output pulse duration remains fixed, independent of any jitter present in the data clock, thereby enhancing the reliability of the analog output signal.

Career Highlights

James J Riches is currently employed at Freescale Semiconductor, Inc., where he applies his expertise in electronics and signal processing. His work has contributed to the advancement of technologies that are crucial in various applications, including telecommunications and audio processing.

Collaborations

Riches has collaborated with several talented individuals in his field, including John J Parkes, Jr and Raul Salvi. These collaborations have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies.

Conclusion

James J Riches exemplifies the spirit of innovation through his contributions to electronics and signal processing. His patents reflect a commitment to enhancing technology and improving performance in critical applications. His work continues to inspire future advancements in the field.