M Campbell Smith

Title: M Campbell Smith - Innovator in Digital Signal Processing

Introduction

M Campbell Smith is a notable inventor based in Santa Clara, CA. He has made significant contributions to the field of digital signal processing, particularly through his innovative patent. His work focuses on improving the performance of interpolating filters, which are essential in various digital applications.

Latest Patents

M Campbell Smith holds a patent for the "Interpolation of digital signals using signal sample replication." This patent describes a filtering technique that enhances the performance of interpolating filters. The method involves replicating samples of the digital input signal rather than inserting zeroes, which helps eliminate unwanted images of the sampled input signal. The filter includes a digital equivalent of a sample and hold mechanism that samples the digital input signal at the input sample rate. It replicates the sampled digital input signal a predetermined number of times to increase the sample rate by an integer multiple, producing replicated samples of the input signal. A smoothing filter is then coupled to the digital sample and hold to smooth the replicated samples. This smoothing filter has a shape that features high-frequency enhancement followed by a sharp cutoff, compensating for the replicated samples of the input signal. The result is interpolated digital output signals that operate at a sample rate higher than the input sample rate.

Career Highlights

Throughout his career, M Campbell Smith has demonstrated a commitment to advancing technology in digital signal processing. His innovative approach to filtering techniques has positioned him as a key figure in this field. His patent reflects his dedication to improving the efficiency and effectiveness of digital signal processing methods.

Collaborations

M Campbell Smith has worked alongside Dennis Lee Wilson, contributing to the development of advanced technologies in their field. Their collaboration has likely fostered innovative ideas and solutions in digital signal processing.

Conclusion

M Campbell Smith's contributions to digital signal processing through his patent on interpolation techniques highlight his innovative spirit and technical expertise. His work continues to influence the field, paving the way for future advancements in digital technology.