Katsuhiko Ohta

Title: Katsuhiko Ohta – Innovator in Disk Drive Technology

Introduction

Katsuhiko Ohta is a prominent inventor based in Tokyo, Japan, recognized for his significant contributions to the field of disk drive technology. With three patents to his name, Ohta's work has had a lasting impact on data storage solutions.

Latest Patents

Ohta's latest inventions include a series of innovative patents focused on improving disk drives. His notable patent is a "Disk drive and servo-control method therefor," which details a disk drive system that comprises a head, an actuator, and a controller. The head is responsible for accessing the disk, while the actuator, powered by a voice-coil motor, moves the head in a radial direction. The controller performs servo control of the actuator using servo data obtained from the head. Notably, it incorporates a set of notch filters to enhance the performance of the servo-control loop, specifically designed to increase attenuation rates at designated frequencies under certain target positions.

Another of his patents, titled "Disk drive device and ramp used therefor," addresses concerns regarding data errors in hard disk drives. This innovation introduces a ramp design that minimizes dust generation caused by friction between the magnetic disk and the ramp. The design includes a hard disk drive enclosure, a motor for rotating the disk, and an actuator supporting a head slider. This innovative ramp features a resin material that allows a smoother operation while maintaining the structural integrity necessary for optimal performance.

Career Highlights

Ohta has worked at notable companies in the technology sector, including Hitachi Global Storage Technologies Netherlands B.V. and HGST Netherlands B.V., where he honed his skills in the development of disk drive systems. His experience at these organizations has played a crucial role in shaping his approach to innovation in the field.

Collaborations

Throughout his career, Katsuhiko Ohta has collaborated with esteemed colleagues such as Kohji Takahashi and Satoshi Matsumura. These partnerships have contributed to the advancement of technologies in the industry, showcasing the power of teamwork in driving innovation.

Conclusion

Katsuhiko Ohta's dedication to improving disk drive technology through his innovative patents demonstrates his significant role as an inventor. His continuous pursuit of excellence in creating solutions for data storage challenges sets a remarkable example in the field. As technology progresses, the impact of his work ensures that he will remain a key figure in the evolution of disk drive systems.