Seungman Chang

Title: Seungman Chang: Innovator in Hard Disk Drive Technology

Introduction

Seungman Chang is a notable inventor based in Redwood City, California, recognized for his contributions to hard disk drive technology. With a total of two patents to his name, Chang has made significant advancements in the field, particularly in the design and functionality of hard disk drives.

Latest Patents

Chang's latest patents include a Head Stack Latch Assembly and a Passive Test Circuit used to determine the back EMF of a voice coil motor during the application of a bias voltage. The Head Stack Latch Assembly patent discloses a Load-Unload (LUL) hard disk drive that features a disk base and a spindle motor for rotating disks. This innovation includes a head stack assembly that engages an actuator latch when the sliders are parked, enhancing the reliability of the drive during non-operational shocks. The Passive Test Circuit patent involves a hard disk drive with a voice coil motor that receives a biasing voltage, allowing for the measurement and analysis of back EMF voltage to assess low-frequency vibrations in the disk drive.

Career Highlights

Throughout his career, Seungman Chang has worked with prominent companies in the technology sector, including Seagate Technology International and Samsung Electronics Co., Ltd. His experience in these organizations has contributed to his expertise in hard disk drive innovations.

Collaborations

Chang has collaborated with notable professionals in the field, including Seong Woo Kang and Tomokazu Ishii. These collaborations have likely fostered an environment of innovation and creativity, leading to advancements in hard disk drive technology.

Conclusion

Seungman Chang's contributions to hard disk drive technology through his patents and career experiences highlight his role as an innovator in the field. His work continues to influence the development of reliable and efficient storage solutions.