Brian A Johnson is a prominent inventor based in Laguna Hills, California. He has made significant contributions to the field of data storage technology, holding a total of 12 patents. His innovative work has advanced the capabilities and efficiency of data storage devices.

Latest Patents

One of his latest patents is for a data storage device with smart ISOFET threshold voltage automatic tuning. This invention includes a disk and a spindle motor configured to rotate the disk, powered by a drive voltage generated in response to a host voltage. The device features a head actuated over the disk by a head actuator and control circuitry that utilizes an isolation field effect transistor (ISOFET) to prevent reverse current flow when the host voltage falls below a threshold. The control circuitry also determines the drain-source on resistance of the ISOFET and calculates the voltage turnoff threshold.

Another notable patent is for a data storage device having dual actuators and a method for data egress throttling during emergency power off retract (EPOR). This device comprises a lead actuator that actuates a first read-write head over a first disk and a support actuator for a second disk. In the event of an emergency power off, the device retracts and parks the actuators using an internal supply voltage generated from the spindle motor's back electromotive force. The egress of data is throttled based on the internal supply voltage levels.

Career Highlights

Brian A Johnson is currently employed at Western Digital Technologies, Inc., where he continues to innovate in the field of data storage. His work has been instrumental in developing advanced technologies that enhance data reliability and performance.

Collaborations

Throughout his career, Brian has collaborated with notable colleagues, including Jaesoo Byoun and Hideaki Ito. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Brian A Johnson is a key figure in the realm of data storage innovation, with a strong portfolio of patents that reflect his expertise and dedication to advancing technology. His contributions continue to shape the future of data storage solutions.

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