Patents by Inventor MuChong Lim

MuChong Lim 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).

  • Adaptive control of head velocity during data storage device startup
    Patent number: 7542224
    Abstract: A control method is provided for loading a data transfer head to a data storage medium comprising: determining a desired maximum displacement between a parked position of the head and an encroaching position of the head in relation to a selected data storage track of the medium; determining a spin interval associated with a predetermined quantity of medium movement before the head reaches the encroaching position; rotating the data storage medium at a beginning of the spin interval; and moving the actuator during the spin interval from the parked position and at a velocity resulting in the head being displaced at the end of the spin interval a distance that is less than the maximum displacement. A data storage device is contemplated comprising programmed instructions for performing this method for a predetermined number of loading occurrences, or in relation to observing a threshold data transfer error rate.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: June 2, 2009
    Assignee: Seagate Technology
    Inventors: Robert Billings Church, Sumit Chandra, Rory Stephan Goodman, MuChong Lim, Serene Kiang Low, Ishak Sugeng Iskandar
  • Adaptive control of head velocity during data storage device startup
    Publication number: 20060291086
    Abstract: A control method is provided for loading a data transfer head to a data storage medium comprising: determining a desired maximum displacement between a parked position of the head and an encroaching position of the head in relation to a selected data storage track of the medium; determining a spin interval associated with a predetermined quantity of medium movement before the head reaches the encroaching position; rotating the data storage medium at a beginning of the spin interval; and moving the actuator during the spin interval from the parked position and at a velocity resulting in the head being displaced at the end of the spin interval a distance that is less than the maximum displacement. A data storage device is contemplated comprising programmed instructions for performing this method for a predetermined number of loading occurrences, or in relation to observing a threshold data transfer error rate.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 28, 2006
    Inventors: Robert Church, Sumit Chandra, Rory Goodman, MuChong Lim, Serene Low, Ishak Iskandar