Yuanyuan Zhao

Title: Yuanyuan Zhao: Innovator in Data Storage Technology

Introduction

Yuanyuan Zhao is a prominent inventor based in Lake Forest, CA (US). He has made significant contributions to the field of data storage technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and performance of data storage devices.

Latest Patents

One of Yuanyuan Zhao's latest patents is a data storage device with a servo control processor that features an initial fast lock of the disk lock clock. This invention includes various illustrative aspects directed to a data storage device, which comprises one or more disks, an actuator mechanism for positioning heads near the recording medium, and a spindle motor for rotating the disks. The servo control processor is designed to receive a spindle speed error signal, which indicates an error in the rotational speed of the spindle motor. It is also configured to output an initial frequency offset signal that is proportional to the spindle speed error signal.

Another notable patent involves configuring a gain of a servo control system for actuating a head over a disk. This data storage device includes a first disk surface with servo data defining servo tracks at a first radial density, a first head, and a voice coil motor (VCM) that actuates the first head over the disk surface. During a load operation, the back electromotive force (BEMF) voltage generated by the VCM is evaluated to estimate the distance traveled. The servo data is detected, and an initial servo track is established based on this data to generate a measured distance traveled. The gain of the servo control system is then configured based on both the estimated and measured distances traveled.

Career Highlights

Yuanyuan Zhao is currently employed at Western Digital Technologies, Inc., where he continues to innovate in the field of data storage solutions. His expertise and inventions have contributed to advancements in the efficiency and reliability of data storage devices.

Collaborations

Yuanyuan has collaborated with notable coworkers, including Wei Xi and Yongzhi Liu, who have also contributed to the field of data storage technology.

Conclusion

Yuanyuan Zhao's innovative work in data storage technology has led to significant advancements in the industry. His patents reflect a commitment to improving the performance and efficiency of data storage devices, making him a valuable contributor to the field.