Charn Leung (David) Lo

Title: Charn Leung (David) Lo: Innovator in Multimedia Conferencing Technology

Introduction

Charn Leung (David) Lo is a notable inventor based in Ottawa, Canada. He has made significant contributions to the field of multimedia conferencing technology, holding 2 patents that showcase his innovative approach to solving complex audio and video challenges.

Latest Patents

One of his latest patents is titled "Detecting acoustic echoes using microphone arrays." This method provides a solution for discriminating between a single talker with an acoustic reflection and the case of two talkers, regardless of their power levels. The method is implemented in real-time by performing a cross-correlation between pairs of average power signals originating from pairs of beamformers. A detection decision is then made based on the value of the cross-correlation and its lag.

Another significant patent is "System and method of self-discovery and self-calibration in a video conferencing system." This method allows for arbitrary placement of audio and video components in a multimedia conferencing system. It involves using one or more markers on the audio components, such as microphone arrays, that are detectable by the video components, like cameras. Each marker is characterized by a unique signature, allowing for precise location calculations relative to the camera. A self-calibration operation is then performed to relate, regulate, and standardize dimensions and locations in the conferencing environment to the video system.

Career Highlights

Charn Leung (David) Lo is currently associated with Mitel Networks Corporation, where he continues to develop innovative solutions in the field of multimedia communications. His work has significantly impacted the way audio and video technologies are integrated in conferencing systems.

Collaborations

Throughout his career, Charn has collaborated with notable professionals in the industry, including Dieter Schulz and Graham Thompson. These collaborations have further enhanced his contributions to the field.

Conclusion

Charn Leung (David) Lo is a distinguished inventor whose work in multimedia conferencing technology has led to valuable patents that address critical challenges in audio and video integration. His innovative methods continue to shape the future of communication technology.