Seagate Assigned Three Patents

Wear leveling technique for storage devices

Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,301,830) developed by Timothy R. Feldman, Louisville, CO, and Jonathan W. Haines, Boulder, CO, for a "wear leveling technique for storage devices."
 
The abstract of the patent published by the U.S. Patent and Trademark Office states: "A method for managing wear levels in a storage device having a plurality of data blocks, the method comprising moving data to data blocks having higher erasure counts based on a constraint on static wear levelness that tightens over at least a portion of the lives of the plurality of data blocks."

The patent application was filed on Oct. 12, 2011 (13/271,726).

System and method for wear leveling
in a data storage device

Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,312,204) developed by Fumin Zhang, Eden Prairie, MN, and Chris Malakapalli, Burnsville, MN, for a "system and method for wear leveling in a data storage device."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "The present disclosure provides a system and method for wear leveling. In one example, the method includes receiving first data to be stored to a first data storage medium and storing the first data to a first storage location in a nonvolatile data store of a second data storage medium comprising a solid-state memory. The method also includes setting a pointer to enable writing second data that is received to a next storage location in the nonvolatile data store. The next storage location comprises an address of the nonvolatile data store that is sequentially after an address of the first storage location. When the address of the first storage location is a last addressed location of the nonvolatile data store the pointer is set to enable writing the second data to a first addressed location of the nonvolatile data store. The method also includes writing the first data stored in the nonvolatile data store to the first data storage medium when a trigger occurs and preserving the pointer during the writing from the nonvolatile data store to the first data storage device such that the pointer enables writing the second data to the next storage location."

The patent application was filed on Jan. 23, 2009 (12/358,319).

Data storing location
managing method and data storage system

Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,291,185) developed by four co-inventors for a "data storing location managing method and data storage system."

The co-inventors are Se-wook Na, Suwon-si, South Korea, Sang-hoon Lee, In-sik Ryu, Suwon-si, South Korea, and Hye-jeong Nam, Seongnam-si, South Korea.

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A data storing location managing method including generating an access frequency of a storing area accessed in a first storage apparatus according to a command received, copying data stored in the storing area of the first storage apparatus to a storing area of a second storage apparatus when the access frequency of the storing area of the first storage apparatus is greater than a reference value, and replacing location information of the storing area of the first storage apparatus with location information of the storing area of the second storage apparatus."

The patent application was filed on July 29, 2009 (12/511,992).