Camas, WA, United States of America

Shawmin Lei

This inventor holds 57 USPTO granted patents, plus 16 CIPO patents and 10 EPO patents, primarily in Adaptive Filtering (CPC class H04N). Top assignees: Sharp Laboratories of America, Inc, Dolby Laboratories Licensing Corporation, Sharp Kabushiki Kaisha Corporation. Active years: 1999-2020.


% Patents Active = 57.9


 

Average Co-Inventor Count = 2.4

ph-index = 16

Forward Citations = 698(Granted Patents)

Forward Citations (Not Self Cited) = 647(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Vancouver, WA (US) (2002)
  • Hsinchu, TW (2012 - 2013)
  • Camas, WA (US) (1999 - 2020)

Company Filing History:


Years Active: 1999-2020

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Areas of Expertise:
Adaptive Filtering
Video Coding
Noise Processing
Tone Mapping
Image Enhancement
Motion Compensation
Data Compression
DPCM
Film Grain Noise
Intra-frame Flicker
Prediction-mode Selection
Color Visual Model
57 patents (USPTO):Explore Patents

Title: **Shawmin Lei: Innovator in Image Decoding Technologies**

Introduction

Shawmin Lei is a prolific inventor based in Camas, Washington, known for his significant contributions to the field of image decoding technologies. With an impressive portfolio of 57 patents, Lei has made a lasting impact on advancements in this area, utilizing his expertise to innovate solutions that enhance image processing.

Latest Patents

Among Shawmin Lei’s latest innovations is a patent for an adaptive filtering mechanism based on boundary strength. This invention defines an image decoding apparatus that consists of a motion compensation prediction circuit tasked with executing motion compensation prediction for various blocks to be decoded using a reconstructed image. The device also includes an inverse transformation circuit for conducting inverse orthogonal transformation on the blocks' data. Notably, it features a determination circuit that assesses filtering strength and the necessity for filtering regarding block boundaries. This advanced system intelligently decides to apply filtering based on specific criteria concerning adjacent blocks, making it a noteworthy enhancement in image processing technology.

Career Highlights

Throughout his career, Shawmin Lei has had the opportunity to work with leading technology firms. Notably, he has been associated with **Sharp Laboratories of America, Inc.** and **Dolby Laboratories Licensing Corporation**. His work at these organizations has led to the development of cutting-edge technologies and has solidified his reputation as an influential figure in his field.

Collaborations

In his professional journey, Shawmin Lei has collaborated with notable individuals such as Shijun Sun and Hiroyuki Katata. These collaborations have contributed to the richness of innovative ideas and developments in image decoding technologies, emphasizing Lei’s commitment to teamwork and shared advancements in his field.

Conclusion

Shawmin Lei stands out as a dedicated innovator whose contributions to image decoding technologies have greatly influenced the industry. With a remarkable number of patents to his name, his work continues to pave the way for future advancements in imaging technologies, making him a key player in the realm of innovations.

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