William J Arrighi

Title: The Innovative Contributions of William J Arrighi

Introduction

William J Arrighi is a notable inventor based in El Cerrito, California. He has made significant contributions to the field of video compression technology, holding a total of 9 patents. His work focuses on developing efficient methods for encoding video data, which are crucial in today's digital landscape.

Latest Patents

One of Arrighi's latest patents is titled "Low cost video compression using fast, modified Z-coding of wavelet pyramids." This invention presents an entropy-efficient video coder that approaches the entropy-limited coding rate of video wavelet pyramids. It is designed to be fast in both hardware and software implementations while maintaining low complexity, making it suitable for ASICs. The technology utilizes a modified Z-coder to encode the zero/non-zero significance function and employs Huffman coding for the non-zero coefficients. The encoding unit features a significance function generator that processes coefficients to output a single significance bit. Additionally, a zero coefficient eliminator works in parallel to output non-zero coefficients. The outputs from both components are combined to create the final compressed stream. The modified Z-coder enhances the standard Z-coder by employing a different technique for the least probable symbol case during encoding and decoding, ensuring optimal functionality.

Career Highlights

Throughout his career, William J Arrighi has worked with several prominent companies, including Interval Research Corporation and Vulcan Patents LLC. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in video compression technology.

Collaborations

Arrighi has collaborated with notable individuals in the field, including William C Lynch and Krasimir D Kolarov. These partnerships have fostered a creative environment that has led to the development of innovative solutions in video technology.

Conclusion

William J Arrighi's contributions to video compression technology demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of the complexities involved in efficient data encoding, making him a significant figure in the field.