Minjiang Ji

Title: Minjiang Ji: Innovator in Acoustic Noise Processing

Introduction

Minjiang Ji is a notable inventor based in DeKalb, IL (US). He has made significant contributions to the field of signal processing, particularly in the area of acoustic noise cancellation. His innovative work has led to the development of a unique patent that addresses challenges in noise management.

Latest Patents

Minjiang Ji holds a patent for "Indirectly Sensed Signal Processing in Active Periodic Acoustic Noise." This patent describes a system that employs and processes an indirectly sensed signal representative of a periodic noise acoustic wave. The system converts this signal into a pulse signal that carries both fundamental and harmonic frequency information of the periodic noise. Additionally, it processes a tachometer type RPM signal in a counter circuit controlled by a logic circuit, producing a signal of one pulse per revolution with a controlled duration. The pulse amplitude is adjusted, and the pulses are low pass filtered to block any D.C. from the noise cancelling system input.

Career Highlights

Minjiang Ji is currently employed at Caterpillar Inc., where he applies his expertise in signal processing to enhance noise cancellation technologies. His work is instrumental in developing systems that improve operational efficiency and user experience in various applications.

Collaborations

Throughout his career, Minjiang Ji has collaborated with esteemed colleagues, including M Kathryn Christensen and Sen M Kuo. These partnerships have fostered innovation and contributed to advancements in their respective fields.

Conclusion

Minjiang Ji's contributions to acoustic noise processing exemplify the impact of innovative thinking in technology. His patent and work at Caterpillar Inc. highlight his commitment to improving noise management systems. His achievements serve as an inspiration for future inventors in the field.