Chikako Sasaki

Title: **Chikako Sasaki: Innovator in Servo Control Systems**

Introduction

Chikako Sasaki, an accomplished inventor based in Kanagawa, Japan, has made significant contributions to the field of data storage technologies. With a total of three patents to her name, Sasaki's innovations focus on enhancing the efficiency and reliability of servo control systems, critical components in modern data storage devices.

Latest Patents

Sasaki's latest patents include a groundbreaking "Head Servo Control System and Head Servo Control Method." This invention features a servo control system adept at positioning a head based on position error signals between servo data read from a disk and a target position. The system incorporates a series of adaptive peak filters that parallelly filter position error signals while dynamically adjusting filter coefficients to optimize performance. An included estimator estimates head vibration caused by disturbances, facilitating precise control over the head's movement.

Another notable patent is the "Method of Measuring Head Characteristics of a Data Storage Device," which innovatively measures the characteristics of a head when it is in a state pushed against a crush stop. This method involves writing a burst pattern onto a recording disk and measuring the gain of a variable gain amplifier as the current of the voice coil motor is gradually altered. By identifying the read/write offset with the use of specific gain measurements, this invention provides essential information for improving head characteristics.

Career Highlights

Throughout her career, Chikako Sasaki has worked with prominent companies, including Hitachi Global Storage Technologies Netherlands and HGST Netherlands. Her expertise in the field of data storage and servo control systems has contributed to advancements that enhance the performance of these critical technologies.

Collaborations

Sasaki’s journey as an inventor is marked by fruitful collaborations with esteemed colleagues such as Kenji Okada and Akira Tokizono. These partnerships have fostered an environment of innovation, leading to the development of her remarkable patents.

Conclusion

Chikako Sasaki stands out as a pioneering figure in the innovation landscape of data storage technologies. Her patents reflect a commitment to excellence and an ability to address complex challenges within the industry. As technology continues to evolve, the significance of her contributions will undoubtedly resonate within the realm of servo control systems for years to come.