Patents by Inventor Lance W. Shelton

Lance W. Shelton 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).

  • Publication number: 20110040932
    Abstract: Methods and apparatuses for reduction of Read Disturb errors in a NAND FLASH memory system comprise a controller configured to organize FLASH memory devices into blocks, each block having a plurality of pages, and each page defining an individually addressable physical memory location. The controller is further configured to accumulate a Block READ Count corresponding to the number of times any pages in a first block of pages have been read since the first block was last erased. Once the READ count reaches a predetermined number, the controller responds to subsequent READ requests for pages within the first block by moving data associated with a requested page to a page in a second, different block without moving data associated with other pages in the first block, and modifying a logical-to-physical translation table to associate the moved data with the physical address of the page in the second block.
    Type: Application
    Filed: September 10, 2010
    Publication date: February 17, 2011
    Applicant: TEXAS MEMORY SYSTEMS, INC.
    Inventors: Holloway H. Frost, Charles J. Camp, Timothy J. Fisher, James A. Fuxa, Lance W. Shelton
  • Patent number: 7818525
    Abstract: Methods and apparatuses for reduction of Read Disturb errors in a NAND FLASH memory system comprise a controller configured to organize FLASH memory devices into blocks, each block having a plurality of pages, and each page defining an individually addressable physical memory location. The controller is further configured to accumulate a Block READ Count corresponding to the number of times any pages in a first block of pages have been read since the first block was last erased. Once the READ count reaches a predetermined number, the controller responds to subsequent READ requests for pages within the first block by moving data associated with a requested page to a page in a second, different block without moving data associated with other pages in the first block, and modifying a logical-to-physical translation table to associate the moved data with the physical address of the page in the second block.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: October 19, 2010
    Assignee: Texas Memory Systems, Inc.
    Inventors: Holloway H. Frost, Charles J. Camp, Timothy J. Fisher, James A. Fuxa, Lance W. Shelton