This inventor holds 1 USPTO granted patent. Top assignee: Other. Active years: 1999.
Company Filing History:
1 out of 834,307 Years Active: 1999
Title: Qu Jin - Innovator in Echo Cancellation Technology
Introduction
Qu Jin is a notable inventor based in Kanata, Canada. He has made significant contributions to the field of signal processing, particularly in echo cancellation technology. His innovative approach has led to the development of a unique patent that addresses challenges in this area.
Latest Patents
Qu Jin holds a patent for a "Sub-band echo canceller using optimum wavelet packets and cross-band." This invention comprises a first wavelet decomposition block for decomposing a reference signal into a plurality of reference wavelet packets. It also includes a second wavelet decomposition block for decomposing an echo signal into a plurality of echo signal packets. An adaptive filter bank receives and filters the reference wavelet packets, generating a plurality of filtered output packets that replicate the echo signal packets. The system utilizes a plurality of subtracters to subtract the filtered output packets from the echo signal packets, generating error signals that modify the transfer function of the adaptive filter bank. Finally, a wavelet reconstruction block reconstructs the error signals to form a residual signal from which the echo signal has been cancelled. This innovative design incorporates optimum wavelet filters for the best echo cancellation and presents two wavelet echo cancellation structures.
Career Highlights
Qu Jin's career is marked by his dedication to advancing technology in signal processing. His work has been recognized for its practical applications and effectiveness in improving communication systems. With a focus on developing efficient solutions, he has established himself as a key figure in his field.
Collaborations
Qu Jin has collaborated with talented individuals such as Phillippe Wu and Qiang Wu. These partnerships have contributed to the advancement of his projects and the successful implementation of his innovative ideas.
Conclusion
Qu Jin's contributions to echo cancellation technology exemplify the impact of innovation in signal processing. His patent reflects a deep understanding of the complexities involved in echo cancellation and showcases his commitment to enhancing communication systems.