Company Filing History:

6 out of 42,485

Hitachi, Ltd.

patents

3 out of 2,636

Hitachi Global Storage Technologies Netherlands B.v.

patents

3 out of 5,310

Western Digital Technologies, Inc.

patents

4. 2 out of 987

Hgst Netherlands, B.v.

patents

Years Active: 1998-2024

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14 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 11915731 - Data storage device with notch filter calibration based on multi-rate excitation and error rejection (2024-02-27),

2. 11817122 - Data storage device with notch filter calibration based on multi-rate excitation and error rejection (2023-11-14),

3. 10629234 - Data storage device computing notch filters for multiple temperatures (2020-04-21),

4. 8699166 - Magnetic head drive device with micro-actuators of end arms rotating in a direction opposite micro-actuators of intermediate arms (2014-04-15),

5. 8514523 - Flexible-printed-circuit voice-coil assembly configured for integration in a voice-coil motor (2013-08-20),

6. 7869157 - Magnetic disk drive having dual actuator (2011-01-11),

7. 7474494 - Magnetic disk device with positioning control (2009-01-06),

8. 7173790 - Magnetic disk apparatus with dual stage actuator (2007-02-06),

9. 6950273 - Magnetic disk device (2005-09-27),

10. 6922304 - Positioning control device (2005-07-26),

11. 6819522 - Positioning control apparatus (2004-11-16),

12. 6744591 - Positioning control method (2004-06-01),

13. 6738218 - Disk storage device and head positioning method (2004-05-18),

14. 5720442 - Capstanless tape driving method and information recording and (1998-02-24),

Title: Shinsuke Nakagawa: Innovator in Data Storage Technology

Introduction

Shinsuke Nakagawa is a prominent inventor based in Ibaraki, Japan, known for his significant contributions to data storage technology. With a total of 14 patents to his name, Nakagawa has made remarkable advancements in the field, particularly in the calibration of data storage devices.

Latest Patents

One of Nakagawa's latest patents is a data storage device featuring notch filter calibration based on multi-rate excitation and error rejection. This innovative device comprises one or more disks and an actuator mechanism designed to position heads near the disk surfaces. The processing devices within the system are equipped with an actuator mechanism control system that manages the actuator mechanism. These devices output a multi-rate excitation to a multi-rate notch filter, detect the frequency response of the actuator mechanism, and calibrate the notch filter based on the detected frequency response. This patent highlights Nakagawa's focus on enhancing the performance and reliability of data storage devices.

Career Highlights

Throughout his career, Nakagawa has worked with notable companies such as Hitachi, Ltd. and Hitachi Global Storage Technologies Netherlands B.V. His experience in these organizations has allowed him to develop and refine his innovative ideas in data storage technology.

Collaborations

Nakagawa has collaborated with esteemed colleagues, including Kiyotada Ito and Hidehiko Numasato. Their combined expertise has contributed to the advancement of technology in their respective fields.

Conclusion

Shinsuke Nakagawa's work in data storage technology exemplifies the impact of innovation on modern computing. His patents and collaborations reflect a commitment to enhancing the efficiency and effectiveness of data storage solutions.

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