Junqiang Lan

Title: Innovations of Junqiang Lan

Introduction

Junqiang Lan is a prominent inventor based in Fremont, California. He has made significant contributions to the field of video encoding, holding a total of nine patents. His work focuses on optimizing video processing techniques, which are crucial in today's digital landscape.

Latest Patents

One of his latest patents is titled "Optimization of constrained directional enhancement filtering (CDEF)." This invention involves receiving a video to be encoded using a codec and performing pre-filter encoding of a specific frame. In a single-pass processing of the specific frame, frame-level filter parameters determined using a previous frame are applied to enhance the encoding process. Statistics for the specific frame are gathered to determine future frame-level filter parameters, followed by post-filter encoding of the specific frame.

Another notable patent is the "Fractional motion estimation engine with parallel code unit pipelines." This invention describes a video encoder that includes an integer level motion estimation hardware component. This component determines candidate integer level motion vectors for the video being encoded. The encoder also features a fractional motion estimation hardware component that refines these vectors into candidate sub-pixel level motion vectors. The design includes parallel pipelines that process coding units of a frame in parallel, enhancing the efficiency of video encoding.

Career Highlights

Junqiang Lan has worked with leading technology companies, including Meta Platforms, Inc. and Ambarella, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in video technology.

Collaborations

He has collaborated with talented individuals such as Harikrishna Madadi Reddy and Sujith Srinivasan, contributing to the advancement of video encoding technologies.

Conclusion

Junqiang Lan's contributions to video encoding through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the way video content is processed and delivered in the digital age.