This inventor holds 1 USPTO granted patent. Top assignee: Seagate Technology Incorporated. Active years: 2008.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2008
Title: Wen-Jun Cao: Inventor of a Disc-Drive Shock Protection System
Introduction
Wen-Jun Cao is an inventor associated with Singapore and Seagate Technology Incorporated. Cao’s listed patent concerns a method for protecting disc-drive write operations during shock events without relying on a separate shock sensor.
Latest Patents
Cao is credited with 1 patent: “Soft Sensor for Operating Shock in a Disc Drive.” The invention monitors the output of a voice coil motor (VCM) control plant and compares it with the output of a VCM plant model that is initially insensitive to the shock event. If the difference between the two signals exceeds a predetermined threshold, the system triggers a write-protect gate to prevent writing to the disc. This approach uses the drive’s control signals to detect shock-related behavior without a dedicated sensor.
Career Highlights
Cao’s listed invention addresses a practical challenge in disc-drive design: preventing data writes when a shock could compromise reliable operation. The patent describes both the signal-comparison method and system components that generate and evaluate the relevant outputs.
Collaborations
Cao’s listed coworkers include Qiang Bi and LeeLing Tan. The available information identifies these professional associations but does not specify their individual contributions to the patent.
Conclusion
Wen-Jun Cao’s patent presents a sensorless approach to detecting operating shock and protecting disc-drive write operations, reflecting an engineering focus on data integrity and device reliability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile