This inventor holds 2 USPTO granted patents. Top assignees: Conexant Systems, Inc., Force10 Networks, Inc.. Active years: 2004-2005.
Company Filing History:
Years Active: 2004-2005
Title: Zhijun Tong: Innovator in Data Packet Queue Sequencing and Video Quantization
Introduction
Zhijun Tong is a notable inventor based in Fremont, California. He has made significant contributions to the fields of data packet queue sequencing and video quantization. With a total of two patents to his name, his work has had a considerable impact on technology.
Latest Patents
Zhijun Tong's latest patents include an interleaved weighted fair queuing mechanism and system. This invention discloses methods and apparatus for interleaved weighted fair data packet queue sequencing. An interleaving table specifies a queue sequence, allowing a queue sequencer to follow the table order on an epoch-by-epoch basis. The sequencer selects a queue for each epoch based on the table order. If the selected queue lacks sufficient data to fill its epoch, the sequencer can move to the next queue in the table order. This interleaved structure allows higher-priority queues to be visited frequently, thereby improving jitter and latency for packets associated with these queues. Additionally, the table structure ensures that all queues receive a portion of the available output bandwidth, with some queues being afforded a larger portion without monopolizing the output stream. In some embodiments, each table entry has a programmable epoch value associated with it, which can be used to weight each entry relative to others.
Another significant patent by Zhijun Tong involves apparatus and methods for adaptive digital video quantization. This invention allows for performing quantization adaptively in accordance with the perceptual masking characteristics of the human visual system. In a preferred MPEG encoder-IC, a block-based activity quantization modification is formed from the combined correlation of block-energy and edge analyses. A luminance-sensitivity modification is then created and correlated with the activity modification to form an intermediate modification. This process continues with further modifications to produce a final quantization value that is rounded and returned to a rate controller.
Career Highlights
Zhijun Tong has worked with several prominent companies throughout his career. Notable among these are Force10 Networks, Inc. and Conexant Systems, Inc. His experience in these organizations has contributed to his expertise in the field of technology and innovation.
Collaborations
Zhijun Tong has collaborated with several professionals in his field, including Yao-Min Chen and Heeloo Chung. These collaborations have likely enriched his work and contributed to his innovative