Bryan Scott Rowan is a notable inventor based in Los Gatos, CA (US). He has made significant contributions to the field of disk drive technology, holding a total of 10 patents. His work focuses on improving the efficiency and reliability of disk drives, particularly in power management and head positioning systems.

Latest Patents

One of his latest patents is titled "Head positioning system for a disk drive during a power down condition." This invention describes a disk drive that includes a read/write head mounted on an actuator, which can move radially between the inner and outer diameter regions of a disk. The system features an unload ramp positioned at the outer diameter region and a controller that outputs control signals upon sensing a power down condition. A feedback circuit is designed to sense back electromotive force (back emf) generated by the actuator, applying a counter-acting voltage to bring the actuator to a stop while the disk continues to rotate. The actuator then moves the head to the unload ramp, ensuring safe operation during power down.

Another significant patent is the "Method and system for providing spindle motor control for head loading in a disk drive." This invention outlines methods for controlling spindle motor speed during head loading events. It includes inputting a time-varying reference velocity profile signal and selecting a controller to manage spindle motor speed. The system also incorporates feedforward control signals to precompensate for drag during head loading, maintaining spindle motor speed within operational tolerances.

Career Highlights

Bryan Scott Rowan is currently employed at International Business Machines Corporation (IBM), where he continues to innovate in the field of disk drive technology. His work has been instrumental in advancing the capabilities of disk drives, particularly in terms of power management and operational efficiency.

Collaborations

Throughout his career, Bryan has collaborated with notable colleagues, including Louis Joseph Serrano and Mantle Man-Hon Yu. These collaborations have contributed to the development of cutting-edge technologies in the disk drive industry.

Conclusion

Bryan Scott Rowan is a distinguished inventor whose work has significantly impacted disk drive technology. His innovative patents and contributions to IBM highlight his commitment to advancing the field. His inventions continue to shape the future of data storage solutions.

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