Takahisa Ueno

Title: Innovations by Takahisa Ueno: Revolutionizing Disk Drive Technology

Introduction

Takahisa Ueno, an esteemed inventor based in Kawasaki, Japan, has made significant contributions to the field of disk drive technology. Holding a total of four patents, Ueno's work is characterized by innovative approaches to measuring magnetic fields and enhancing head position control in disk drives.

Latest Patents

Ueno's latest patents showcase his ingenuity in addressing complex challenges within disk drive systems. One notable invention is the "Apparatus and method of measuring write magnetic field of recording head." This innovative apparatus utilizes a measurement process to record the magnetization state of a reference pattern on a specific track of a recording medium. By generating a leakage magnetic field of a demagnetization pattern, it effectively demagnetizes the magnetization state of the reference pattern and calculates the difference between the outputs before and after demagnetization. This process enables the precise determination of the leakage magnetic field of a recording head.

Additionally, his patent titled "Head position control for a disk drive which performs recording about the rotational center even if the recorded servo information is eccentric" aims to enhance head position accuracy in disk drives. This invention allows for high-speed access despite eccentricity between a track defined by servo information and the center of rotation. By utilizing two-phase servo bursts recorded in alternating manners on the disk surface, Ueno's approach determines the displacement of the head and ensures it moves along a circular rotation path.

Career Highlights

Throughout his career at Fujitsu Corporation, Ueno has demonstrated his skill as a leading inventor. His inventive spirit and technical expertise have allowed him to develop groundbreaking technologies that enhance the efficiency and performance of disk drive systems. His contributions are vital in pushing the boundaries of what is possible in data storage technology.

Collaborations

Ueno has collaborated with notable colleagues such as Susumu Hasegawa and Tomoyoshi Yamada. Together, their combined expertise in the fields of engineering and technology has led to advancements that benefit the industry and elevate Fujitsu Corporation's reputation for innovation.

Conclusion

Takahisa Ueno stands out as a prominent inventor whose work has significantly impacted disk drive technology. His latest patents reflect his dedication to innovation and excellence. As he continues to contribute to the field, Ueno's inventions will undoubtedly inspire future advancements in the industry.