This inventor holds 7 USPTO granted patents. Top assignees: Nortel Networks Corporation, Conexant Systems, Inc., 3Dsp Corporation. Active years: 2001-2006.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
4 out of 4,171 
2 out of 763 
1 out of 3 Years Active: 2001-2006
Title: Innovations of Wei-Jei Song
Introduction
Wei-Jei Song is a notable inventor based in Aliso Viejo, California. He has made significant contributions to the field of voice processing systems, holding a total of 7 patents. His work focuses on enhancing communication technologies, particularly in echo cancellation and voice integrity.
Latest Patents
One of his latest patents is titled "Coefficient domain history storage of voice processing systems." This invention provides a method and apparatus for canceling a near-end echo of a far-end signal for each channel of a voice over packet multi-channel communications gateway. The invention utilizes both 'off-the-shelf' coding mechanisms and novel coding schemes to ensure a fixed compression rate while maintaining perfect speech integrity on various processing components, such as network echo cancellers and Voice Activity Detectors. The off-the-shelf compression algorithms include LPC-10, G.723.1, and G.729A, while alternatives consist of Wavelet transform, DPCM, and ADPCM.
Another significant patent is the "Method and apparatus for infinite return loss handler for network echo canceller." This communication device and method detect an infinite return loss (IRL) condition and can temporarily halt or bypass the operations of an echo canceller in response to this detection. The echo canceller features an IRL detection module that analyzes echo return loss from both far-end and near-end signals. Based on this analysis, the module determines whether to bypass the subtraction of the estimated echo in the outgoing near-end signal or continue normal operations.
Career Highlights
Wei-Jei Song has worked with prominent companies in the technology sector, including Nortel Networks Corporation and Conexant Systems, Inc. His experience in these organizations has contributed to his expertise in voice processing technologies.
Collaborations
Throughout his career, Wei-Jei Song has collaborated with talented individuals such as Chiang Yeh and Kan Lu. These partnerships have likely enriched his work and led to innovative solutions in the field.
Conclusion
Wei-Jei Song's contributions to voice processing systems and echo cancellation technologies demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving communication systems, making him a significant figure in the field of inventions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile