Patents by Inventor Yunn Zheng

Yunn Zheng 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).

  • Method and system for reducing a disturbance associated with repeatable runout of a removable disc loaded into a storage system
    Patent number: 8665550
    Abstract: A method for reducing a disturbance associated with repeatable runout associated with a removable disc loaded into a storage system. The method includes, at the storage system: logically partitioning the removable disc into sectors; for each of the sectors, obtaining a corresponding profile of repeatable runout contained in the sector; and applying a runout control algorithm to each of the sectors to generate a repeatable runout control (RROC) waveform that is usable to suppress the repeatable runout in the sector as indicated by the profile corresponding to the sector. The method also includes, at the storage system: assembling each RROC waveform to generate a single RROC waveform that is useable to suppress repeatable runout as contained in an entire revolution of the removable disc; and storing, in a memory, the single RROC waveform.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: March 4, 2014
    Assignee: Marvell International Ltd.
    Inventors: Pantas Sutardja, Yunn Zheng, Yong Huang, Qiuliang Fu