Patents by Inventor Troy Tse-Quong Lee

Troy Tse-Quong Lee 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).

  • Patent number: 6342985
    Abstract: A system and method for compensation for variation in a voice coil motor's torque factor due to changes in temperature to improve the seek performance of a disk drive. The method uses the numerical relationship between change in torque factor and change in temperature (G) for the voice coil motor, combined with torque factor KT and temperature at/near the voice coil motor measured at a first time (for example during the initial start-up of the disk drive during the automatic recalibrations that is performed during a start-up, (KT RECAL) and (TRECAL) respectively). These KRECAL and TRECAL can be stored in memory. At some later predetermined interval or event, the temperature at or near the voice coil motor is again measured (TEVENT). From these known temperature and torque factor parameters, in combination with the known relationship between temperature and torque factor for the voice coil motor, the KT at the future time/event (KT EVENT) can be calculated.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: January 29, 2002
    Assignee: International Business Machines Corporation
    Inventors: Donald Lee Clare, Troy Tse-Quong Lee, Louis Joseph Serrano