The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2018
Filed:
Feb. 05, 2016
Applicant:
Toshiba Memory Corporation, Minato-ku, JP;
Inventors:
Assignee:
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/0891 (2016.01); G06F 12/02 (2006.01); G06F 12/1009 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0891 (2013.01); G06F 12/0246 (2013.01); G06F 12/1009 (2013.01); G06F 2212/1021 (2013.01); G06F 2212/60 (2013.01); G06F 2212/7201 (2013.01);
Abstract
According to one embodiment, a memory system includes a nonvolatile memory, a device controller, and a tag memory. The device controller stores a part of a logical-to-physical address translation table (L2P table) stored in the nonvolatile memory in a memory of a host as a cache. The tag memory includes a plurality of entries associated with a plurality of cache lines of the cache. Each entry includes a tag indicating which area of the L2P table is stored in a corresponding cache line, and a plurality of bitmap flags indicating whether a plurality of sub-lines included in the corresponding cache line are valid or not.