Patents by Inventor Seng-Chean Hong

Seng-Chean Hong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Regulating distribution of power in a hard disk drive following a power loss
    Patent number: 8854765
    Abstract: Applicant has recognized and appreciated the desirability of powering an actuator using power drawn from one or both of an energy storage device and a spindle motor. In some embodiments, following a loss of external power to a hard disk drive, the hard disk drive (or one or more components thereof) determines whether to provide the actuator with power drawn from the spindle motor or to provide the actuator with power drawn from the spindle motor and from the energy storage device. In some embodiments, the hard disk drive (or the component(s) thereof) may additionally or alternatively determine whether to charge the energy storage device using power drawn from the spindle motor. In some embodiments, the drive may make the determinations based on an amount of power that the actuator is to consume at a time and an amount of power that the spindle motor can provide at the time.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 7, 2014
    Assignees: STMicroelectronics Asia Pacific Pte. Ltd., STMicroelectronics S.r.l.
    Inventors: Frederic Bonvin, Davide Betta, Seng-Chean Hong
  • REGULATING DISTRIBUTION OF POWER IN A HARD DISK DRIVE FOLLOWING A POWER LOSS
    Publication number: 20140247517
    Abstract: Applicant has recognized and appreciated the desirability of powering an actuator using power drawn from one or both of an energy storage device and a spindle motor. In some embodiments, following a loss of external power to a hard disk drive, the hard disk drive (or one or more components thereof) determines whether to provide the actuator with power drawn from the spindle motor or to provide the actuator with power drawn from the spindle motor and from the energy storage device. In some embodiments, the hard disk drive (or the component(s) thereof) may additionally or alternatively determine whether to charge the energy storage device using power drawn from the spindle motor. In some embodiments, the drive may make the determinations based on an amount of power that the actuator is to consume at a time and an amount of power that the spindle motor can provide at the time.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 4, 2014
    Applicants: STMicroelectronics Asia Pacific Pte. Ltd., STMicroelectronics S.r.I.
    Inventors: Frederic Bonvin, Davide Betta, Seng-Chean Hong