Patents by Inventor Da peng ZHAO

Da peng ZHAO 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).

  • Anti-shock method for head stack assembly
    Patent number: 8531797
    Abstract: The present invention directs an anti-shock method for head stack assembly which carries a slider for flying on a disk for operation, and the anti-shock method includes: inputting a constant current to a head disk interface sensor which is deposited in the slider; obtaining a changing voltage of the head disk interface sensor, which is changed with the temperature of the head disk interface sensor as the slider is shocked; outputting the changing voltage to a controller with a threshold set therein; if the changing voltage is bigger than the threshold for a specified number of times, the controller is triggered to control the head stack assembly to stop operating and load on a ramp beside the disk; while if the changing voltage is small than the threshold for said specified number of times, the controller is not be triggered and the head stack assembly still operates.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: September 10, 2013
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Da peng Zhao, Xiong fei Wei, Bin Liu, Shengxiang Chen
  • ANTI-SHOCK METHOD FOR HEAD STACK ASSEMBLY
    Publication number: 20130170073
    Abstract: The present invention directs an anti-shock method for head stack assembly which carries a slider for flying on a disk for operation, and the anti-shock method includes: inputting a constant current to a head disk interface sensor which is deposited in the slider; obtaining a changing voltage of the head disk interface sensor, which is changed with the temperature of the head disk interface sensor as the slider is shocked; outputting the changing voltage to a controller with a threshold set therein; if the changing voltage is bigger than the threshold for a specified number of times, the controller is triggered to control the head stack assembly to stop operating and load on a ramp beside the disk; while if the changing voltage is small than the threshold for said specified number of times, the controller is not be triggered and the head stack assembly still operates.
    Type: Application
    Filed: February 10, 2012
    Publication date: July 4, 2013
    Applicant: SAE Magnetics (H.K.) Ltd.
    Inventors: Da peng ZHAO, Xiong Fei WEI, Bin LIU, Shengxiang CHEN