Sandisk Assigned Two Patents

Storage controller volatile memory containing metadata related to flash memory storage
Sandisk Enterprise IP LLC, Milpitas, CA, has been assigned a patent (8,751,755) developed by Douglas A. rins, Laguna Hills, CA, and Aaron K. Obrich, Morgan Hill, CA, for a “mass storage controller volatile memory containing metadata related to flash memory storage.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A volatile memory associated with a mass storage controller and a flash memory module. The volatile memory includes a number of tables containing information related to the flash memory storage, including a table storing physical flash memory addresses and a plurality of tables containing metadata.”

The patent application was filed on April 8, 2008 (12/082,206).

Storing data in parallel in flash device using on chip page shifting between planes
Sandisk Technologies, Plano, TX, has been assigned a patent (8,775,722) developed by two co-inventors for “storing data in parallel in a flash storage device using on chip page shifting between planes.”

The co-inventors are Steven Sprouse, San Jose, CA, and Sergey Anatolievich Gorobets, Edinburgh, Scotland.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Methods and systems are disclosed herein for storing data in a memory device. Data for multiple pages is written in parallel using plane interleaving. For example, in a four plane write, a first set of four pages are written in the following sequence: 0, 1, 2, 3. A second set of four pages, after plane interleaving, are written in the following sequent: 7, 4, 5, 6. After writing the data, the pages of written data are read, page swapped if necessary, and then written into another portion of memory (such as MLC).“

The patent application was filed on Dec. 30, 2011 (13/341,543).