This inventor holds 10 USPTO granted patents. Top assignee: Seiko Epson Corporation. Active years: 2005-2012.
Company Filing History:
Years Active: 2005-2012
Title: The Innovations of William Chen
Introduction
William Chen is a prominent inventor based in Foster City, CA (US). He has made significant contributions to the field of video encoding technology, holding a total of 10 patents. His work focuses on enhancing the efficiency and effectiveness of video compression techniques.
Latest Patents
Among his latest patents are two notable inventions. The first is titled "Macroblock Homogeneity Analysis and Inter Mode Prediction." This invention involves selecting an inter mode for encoding a video macroblock. An initial analysis on the macroblock homogeneity is performed to quickly reduce the number of inter modes for which motion estimation and rate distortion calculation are to be performed. An inter mode is selected based on these calculations, and sub-pixel motion estimation is performed only on the selected inter mode. This method allows for skipping sub-pixel motion estimation for macroblocks that exhibit relatively low distortion at the integer pixel level.
The second patent is "Transform Domain Based Distortion Cost Estimation." This invention describes a method for calculating a rate distortion cost associated with a mode for encoding a macroblock. In one embodiment, a distortion value for a particular mode is estimated within the transform domain, eliminating the need for both inverse transformation and inverse motion functions in this calculation. A spatial domain residual of an encoding mode is estimated by identifying a difference within the transform domain between a motion compensated prediction residual of a macroblock and its corresponding reconstructed signal. The estimated spatial domain residual is then used in distortion matrix computations to estimate a distortion level within the transform domain for an encoding mode.
Career Highlights
William Chen has built a successful career at Seiko Epson Corporation, where he continues to innovate in the field of video technology. His work has significantly impacted the way video data is processed and compressed, making it more efficient for various applications.
Collaborations
Throughout his career, William has collaborated with notable colleagues, including Vasudev Bhaskaran and Changick Kim. These collaborations have further enriched his work and contributed to the advancements in video encoding technologies.
Conclusion
William Chen's contributions to video encoding technology through his patents and work at Seiko Epson Corporation highlight his innovative spirit and dedication to improving video compression methods. His inventions continue to influence the industry and pave the way for future advancements.