Company Filing History:
5 out of 42,517 
1 out of 227 
Years Active: 1995-2006
Title: Innovations of Katsumoto Onoyama
Introduction
Katsumoto Onoyama is a notable inventor based in Hiratsuka, Japan. He has made significant contributions to the field of disk devices and magnetic disk drives. With a total of 6 patents to his name, Onoyama's work focuses on improving data reliability and performance in storage technologies.
Latest Patents
One of his latest patents is a disk device that includes a function to confirm that a selected head is appropriate for a disk surface. This invention aims to prevent data loss due to incorrect head selection and enhances the reliability of recording and reproducing information. By changing the SAM pattern in the servo information region for each head, the device can accurately determine which head is accessing the disk surface, allowing for effective error checking.
Another significant patent is related to a magnetic disk drive and its control method. This invention addresses the seek operation of a magnetic head using a voice coil motor (VCM). It is designed to maintain excellent fault tolerance in severe environments, such as high temperatures, without compromising access performance. The method involves measuring VCM current and voltage, calculating back electromotive force, and estimating the VCM coil temperature to optimize the seek operation.
Career Highlights
Katsumoto Onoyama has worked with prominent companies such as Hitachi, Ltd. and Hitachi Global Storage Technologies Japan, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of data storage.
Collaborations
Throughout his career, Onoyama has collaborated with talented individuals, including Yosuke Hamada and Takashi Yamaguchi. These partnerships have contributed to the advancement of technology in the industry.
Conclusion
Katsumoto Onoyama's contributions to disk devices and magnetic disk drives have significantly impacted data storage technology. His innovative patents reflect his commitment to enhancing reliability and performance in this critical field.