Hitachi and Hitachi Information and Telecommunication Engineering Assigned Patent

Hitachi, Ltd., Tokyo, Japan and Hitachi Information and Telecommunication Engineering, Ltd., Kanagawa, Japan, has been assigned a patent (9,128,616) developed by Hayasaka, Mitsuo, Tokyo, Japan, Yamasaki, Koji, Yokohama, Japan, and Tashiro, Naomitsu, Oi, Japan, for a “storage device to backup content based on a deduplication system.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Chunks that commonly occur in each content type are aggregated in a first container. To be more specific, a storage device used for content backup is configured with:, (1) a memory device that provides a memory region for one or a plurality of first containers used to store first chunks that commonly occur in each content type among chunks extracted from the contents of writing targets, and for one or a plurality of second containers used to store other chunks than the first chunks, and, (2) a backup unit that decides whether each of the chunks extracted from the contents of the writing targets is a first duplication chunk duplicating a chunk stored in the first container, and further decides, for only a chunk that is decided not to be the first duplication chunk, whether each of the chunks is a second duplication chunk duplicating a chunk stored in the second container, and then stores only a chunk that is decided not to be the second duplication chunk in the second container.“

The patent application was filed on April 13, 2012 (13/508,583).