Stanley Chang

Title: Innovations by Stanley Chang

Introduction

Stanley Chang is an accomplished inventor based in Pleasanton, CA. He has made significant contributions to the field of data storage technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and reliability of hard disk drives through innovative error correction methods.

Latest Patents

Chang's latest patents include a method for pipelined error correction aimed at minimizing disk re-reading in hard drives. This two-level pipelined approach processes data errors effectively, allowing for seamless reading of sectors while managing error detection and correction. The first level involves reading a sector and generating a syndrome based on the ECC bits. If an error is detected, a flag system is employed to control the reading of subsequent sectors. The second level initiates firmware error correction if the hardware cannot resolve the error, ensuring data integrity.

Another notable patent is the two-level error correction encoder, which encodes m-bit data symbols using a distance d ECC over GF(2.sup.m+i). This encoder modifies ECC redundancy symbols and appends pseudo redundancy symbols, enhancing the overall data encoding process. The system utilizes Galois Field multipliers and a lookup table to optimize the encoding operation, resulting in a robust data code word that includes both data symbols and modified ECC redundancy symbols.

Career Highlights

Stanley Chang is currently employed at Quantum Corporation, where he continues to innovate in the field of data storage solutions. His expertise in error correction technologies has positioned him as a key contributor to the company's advancements in hard drive performance.

Collaborations

Chang collaborates with talented colleagues, including Shih Mo and Lih-Jyh Weng, who share his commitment to pushing the boundaries of technology in data storage.

Conclusion

Stanley Chang's contributions to the field of data storage through his innovative patents demonstrate his expertise and dedication to improving technology. His work not only enhances the performance of hard drives but also sets a foundation for future advancements in data integrity and reliability.