Company Filing History:

41 out of 5,310

Western Digital Technologies, Inc.

patents

4 out of 52,711

Kabushiki Kaisha Toshiba

patents

2 out of 1,502

Toshiba Electronic Devices & Storage Corporation

patents

where one patent can have more than one assignee

Years Active: 2005-2024

where 'Filed Patents' based on already Granted Patents

45 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 12148456 - Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbances (2024-11-19),

2. 11615811 - Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbances (2023-03-28),

3. 10678442 - Disk drive that efficiently handles random mixed-R/W command-streams (2020-06-09),

4. 10198188 - Disk drive that efficiently handles random mixed-R/W command-streams (2019-02-05),

5. 9245560 - Data storage device measuring reader/writer offset by reading spiral track and concentric servo sectors (2016-01-26),

6. 9208810 - Data storage device attenuating interference from first spiral track when reading second spiral track (2015-12-08),

7. 9076490 - Disk drive writing radial offset spiral servo tracks by reading spiral seed tracks (2015-07-07),

8. 9047901 - Disk drive measuring spiral track error by measuring a slope of a spiral track across a disk radius (2015-06-02),

9. 8982490 - Data storage device reading first spiral track while simultaneously writing second spiral track (2015-03-17),

10. 8917474 - Disk drive calibrating a velocity profile prior to writing a spiral track (2014-12-23),

11. 8902535 - Disk drive adapting feed-forward compensation using iterative learning control over segments of seek length (2014-12-02),

12. 8896957 - Disk drive performing spiral scan of disk surface to detect residual data (2014-11-25),

13. 8861123 - Disk drive servoing on first disk surface while erasing second disk surface (2014-10-14),

14. 8786976 - Disk drive detecting when head is on ramp (2014-07-22),

15. 8749904 - Disk drive compensating for track squeeze by writing non-circular servo tracks (2014-06-10),

Title: Innovations of Siri S Weerasooriya: A Pioneer in Actuator Technology

Introduction

Siri S Weerasooriya, based in Campbell, CA, is a distinguished inventor with an impressive portfolio of 45 patents. His contributions to actuator technology and engineering have significantly impacted the way multi-actuator drives operate, minimizing disruptions and enhancing performance in various applications.

Latest Patents

One of Weerasooriya's latest innovations involves a split actuator drive that limits the slew rate of an aggressor voice coil motor (VCM) to reduce disturbances affecting a victim actuator. This inventive approach modifies the seek operation of the first actuator to ensure that disturbance-generating actions do not adversely impact the functioning of a second actuator within the same drive system. By controlling the radial motion of the aggressor actuator and maintaining a slew rate during the seek operation below a predetermined threshold, the invention effectively prevents or reduces mechanical disturbances typically caused by sudden movements, thereby improving overall efficiency and reliability.

Career Highlights

Throughout his career, Weerasooriya has been associated with major companies that lead the technology sector, including Western Digital Technologies, Inc. and Toshiba Corporation. His work has led to advancements that benefit various industries, showcasing his commitment to innovation and excellence in engineering.

Collaborations

Siri S Weerasooriya has collaborated with notable professionals in the field, including Tehri S Lee and Charles A Park. These partnerships have contributed to the development of technological solutions that address complex challenges in actuator design and functionality.

Conclusion

With a remarkable array of patents to his name, Siri S Weerasooriya continues to be a pivotal figure in the field of actuator technology. His innovative approaches not only enhance the performance of multi-actuator drives but also set new standards in the industry, proving that thoughtful engineering can lead to substantial improvements in technology.

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