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:
Dec. 03, 2019
Filed:
Jun. 21, 2017
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Mark Himelstein, Emerald Hills, CA (US);
Bruce Wilford, Los Altos, CA (US);
Richard Van Gaasbeck, Mountain View, CA (US);
Todd Wilde, Mountain View, CA (US);
Rick Carlson, Pacific Palisades, CA (US);
Vikram Venkataraghavan, Saratoga, CA (US);
Vishwas Durai, Los Altos, CA (US);
Blair Barnett, Mountain View, CA (US);
Kevin Rowett, Cupertino, CA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A page virtualization table (PVT) and one or more block virtualization tables (BVTs) are maintained. The PVT includes PVT entries, each mapping a logical page number (LPN) to a virtual page number (VPN). Each BVT includes BVT entries, each mapping a virtual block number (VBN) to a physical block number (PBN). A request is received for accessing data stored in one of flash memory devices, the request including a first LPN. A search is performed in the PVT based on the first LPN to locate a first PVT entry to obtain a first VPN from the first PVT entry. A search is performed in a first BVT to locate a first BVT entry based on the VPN to obtain a first PBN from the first BVT entry. An input and output (IO) request is issued based on the first PBN to a flash controller associated with a first flash memory device that stores data corresponding to the first PBN.