Company Filing History:

13 out of 5,310

Western Digital Technologies, Inc.

patents

12 out of 52,711

Kabushiki Kaisha Toshiba

patents

3 out of 1,502

Toshiba Electronic Devices & Storage Corporation

patents

where one patent can have more than one assignee

Years Active: 2009-2024

where 'Filed Patents' based on already Granted Patents

25 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 11942122 - Determining absolute position on HDD spiral patterns using dual TDMR readers (2024-03-26),

2. 11574650 - Gain scheduled controller to handle unpredictable disturbances during spiral write (2023-02-07),

3. 11508403 - Reducing the effect of actuator cross-coupling in split actuator drives (2022-11-22),

4. 10074391 - Spiral-based self-servo-write on single disk surface (2018-09-11),

5. 9953672 - Accurate repeatable runout compensation in disk drives during seeks (2018-04-24),

6. 9865290 - Single surface in-drive erase (2018-01-09),

7. 9824708 - Spiral write launch while servoing on reference guide spirals (2017-11-21),

8. 9691421 - Writing spirals with accurate slope on a disk drive media (2017-06-27),

9. 9640210 - Virtual window mode for guide spiral servo demodulation (2017-05-02),

10. 9633682 - Accurate spiral gate positioning in the presence of large non-repeatable runout (2017-04-25),

11. 9514774 - Spiral pitch correction based on micro-jog variation (2016-12-06),

12. 9311941 - Erase coarse guide spiral-based in-drive erase process (2016-04-12),

13. 8934191 - Disk drive generating a disk locked clock using radial dependent timing feed-forward compensation (2015-01-13),

14. 8929021 - Disk drive servo writing from spiral tracks using radial dependent timing feed-forward compensation (2015-01-06),

15. 8780473 - Disk drive selecting a global digital-to-analog setting for a plurality of heads (2014-07-15),

Title: Jiangang Liang: Innovator in Magnetic Head Positioning Technology

Introduction

Jiangang Liang, based in San Jose, California, is a distinguished inventor with a remarkable portfolio of 25 patents. His innovative contributions concentrate on enhancing magnetic head positioning technologies, notably in the field of disk drives. Through his work, he has made significant strides in improving data storage systems and the performance of hard disk drives (HDD).

Latest Patents

Among Liang’s latest patents, one noteworthy invention is the method for "Determining Absolute Position on HDD Spiral Patterns Using Dual TDMR Readers." This innovative approach involves employing two read sensors to accurately detect a servo spiral on a disk, leading to more precise radial position determination of the magnetic head.

Another significant patent is the "Gain Scheduled Controller to Handle Unpredictable Disturbances During Spiral Write." This method enhances the writing of servo information on disk drives and incorporates a system that adjusts controller parameters to mitigate radial position errors caused by disturbances, thereby improving the overall reliability of data writing processes.

Career Highlights

Liang has forged a successful career at renowned companies such as Western Digital Technologies, Inc. and Toshiba Corporation. His roles at these institutions have allowed him to develop cutting-edge technologies that contribute to the evolution of storage solutions.

Collaborations

Throughout his career, Jiangang Liang has collaborated with talented professionals, including Gabor Szita and Siri S Weerasooriya. These partnerships have facilitated the exchange of ideas and innovations, further propelling advancements in the field of magnetic storage technologies.

Conclusion

Jiangang Liang stands out as a key figure in the realm of HDD technology, with a strong legacy characterized by his numerous patents and impactful work experiences. His innovations not only enhance disk drive performance but also shape the future of data storage solutions. As technology continues to evolve, inventors like Liang play a crucial role in driving progress and innovation in this dynamic industry.

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