Patents by Inventor Glenn Cheng

Glenn Cheng 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: 9383923
    Abstract: Write pointer management for a disk drive including a disk having a plurality of sectors and a non-volatile memory (NVM) for storing data. Data is sequentially written sector by sector on the disk. The data written in a sector includes a write status indicator indicating that data has been written in the sector. A write pointer is stored on the disk or the NVM as a check-pointed write pointer. The write pointer corresponds to a current sector for writing data on the disk. During a write pointer recovery process, the check-pointed write pointer is retrieved, and at least one write status indicator is scanned in a range of sectors from the sector corresponding to the retrieved check-pointed write pointer and a last sector to identify the current sector for writing data. The write pointer is set to correspond to the identified current sector.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: July 5, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: James N. Malina, Joo Peng Teh, Sang Huynh, Carl E. Barlow, Robert M. Fallone, William B. Boyle, Glenn Cheng, Kuang Hwa Teo, Peng Lee Liang, Daniel D. Reno