Company Filing History:
Years Active: 1992-1995
Title: The Innovative Contributions of Shafaollah Dahandeh
Introduction: Shafaollah Dahandeh is a notable inventor based in Norman, Oklahoma, recognized for his significant advancements in magnetic data storage technologies. With two patents under his name, Dahandeh has made substantial contributions to the field, particularly in the development of techniques aimed at improving data retrieval and storage efficiency.
Latest Patents: The focus of Dahandeh's latest patents includes a "Maximum Likelihood Detector for a Disc Drive PRML Read Channel." This invention pertains to a maximum likelihood detector designed for disc drives, where data files are organized along tracks as sequences of magnetically written data elements. The detector employs even and odd Viterbi decoders that ascertain the most probable even and odd subsequences of data based on samples derived from the signal received by the read channel. It features an advanced postcoder capable of generating the most accurate sequence of bits from the encoded user data. The patent details a sophisticated architecture incorporating analog adders, subtracters, sample and hold circuits, and a shift register with interstate decoders.
Additionally, Dahandeh developed a "Method for Assigning Tracks on a Magnetic Data Storage Disk to Different Zones." In this patent, he introduces a method where data is written at designated zone frequencies on magnetic storage disks, optimizing the read/write error rate to remain within specified parameters. This innovative approach involves writing a variety of data bit groups on selected tracks and monitoring for errors to derive an error indication parameter for each frequency zone, thereby enhancing data integrity and performance.
Career Highlights: Shafaollah Dahandeh's professional journey is marked by his significant contributions at Seagate Technology Incorporated, a leading company in data storage solutions. His background in electrical engineering and his extensive experience in research and development have been pivotal in his role at the company, allowing him to push the boundaries of technology in magnetic data storage systems.
Collaborations: Throughout his career, Dahandeh has worked alongside fellow innovators, including Vadim B. Minuhin and Vladimir Kovner. These collaborations have further enriched his research and led to advancements that reflect a collective effort in achieving technological breakthroughs in data storage.
Conclusion: Shafaollah Dahandeh stands out as an influential inventor in the realm of magnetic data technologies. His patents indicate a dedication to innovation, with a clear focus on improving data reliability and efficiency in storage systems. His contributions will undoubtedly continue to impact the field for years to come.