This inventor holds 2 USPTO granted patents. Top assignee: Western Digital Technologies, Inc.. Active years: 2012-2014.
Company Filing History:
Years Active: 2012-2014
Title: The Innovations of Johanes S Ma
Introduction
Johanes S Ma is an accomplished inventor based in Lake Forest, CA (US). He has made significant contributions to the field of disk drive technology, holding a total of 2 patents. His work focuses on enhancing the performance and reliability of disk drives, which are essential components in modern computing.
Latest Patents
Johanes S Ma's latest patents include innovative solutions that address critical challenges in disk drive functionality. One of his patents, titled "Disk drive calibrating radial density then adjusting linear density to balance off-track read capability," describes a disk drive that comprises multiple disk surfaces and a head actuated over each surface. This invention measures the off-track read capability (OTRC) for each disk surface and selects a radial density of data tracks based on these measurements. Additionally, it adjusts the linear density of at least two disk surfaces to ensure balanced OTRCs across the disk surfaces.
Another notable patent is the "Media defect scan," which outlines a disk drive that includes a disk, a head for writing data, and control circuitry. This control circuitry is designed to write data to various data tracks, read a specific data area, and generate quality metrics based on the read back signals. The invention applies additional stress to the data area to assess its quality and determine whether it meets predefined thresholds.
Career Highlights
Johanes S Ma is currently employed at Western Digital Technologies, Inc., a leading company in data storage solutions. His work at Western Digital has allowed him to develop and refine his innovative ideas, contributing to the advancement of disk drive technology.
Collaborations
Throughout his career, Johanes has collaborated with talented individuals such as Baoliang Zhang and Teik Ee Yeo. These collaborations have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.
Conclusion
Johanes S Ma's contributions to disk drive technology through his patents and work at Western Digital Technologies, Inc. highlight his role as an influential inventor in the field. His innovative solutions continue to shape the future of data storage and enhance the performance of disk drives.