Li-Fung Cheung

Title: The Innovative Contributions of Li-Fung Cheung

Introduction

Li-Fung Cheung is a notable inventor based in Alhambra, CA, who has made significant contributions to the field of image data compression. With a total of 8 patents to his name, Cheung's work has advanced the technology used in digital imaging and data processing.

Latest Patents

Cheung's latest patents include innovative methods for improving the compression ratio of image data. One of his notable inventions is a technique for segmenting image data into blocks and deleting some prior to compression. This method enhances the compression ratio by arranging both foreground and background data pixels into 8 by 8 pixel blocks. Blocks that do not contain at least one pixel to be printed are deleted before compression, ensuring that only relevant data is processed.

Another significant patent is the development of a string-match array for substitutional compression. This circuit implements a substitutional compressor where comparators compare a current input pixel against a large number of previous pixels stored in a series of shift registers. The process continues until the longest series of matching pixels is found, optimizing the efficiency of data compression.

Career Highlights

Li-Fung Cheung is currently employed at Xerox Corporation, where he continues to innovate and contribute to advancements in imaging technology. His work at Xerox has positioned him as a key player in the field of data compression.

Collaborations

Cheung has collaborated with several talented individuals, including Simon M Law and Uoc H Nguyen, who is a woman. These collaborations have further enriched his work and contributed to the success of his inventions.

Conclusion

Li-Fung Cheung's contributions to image data compression through his innovative patents have significantly impacted the field of digital imaging. His work continues to influence advancements in technology, showcasing the importance of innovation in today's digital landscape.