US Patent No. 9,092,323

SYSTEMS AND METHODS FOR RECOVERING ADDRESSING DATA


Patent No. 9,092,323
Issue Date July 28, 2015
Title Systems And Methods For Recovering Addressing Data
Inventorship Luan Ton-That, San Jose, CA (US)
Lau Nguyen, Sunnyvale, CA (US)
Gwoyuh Hwu, Cupertino, CA (US)
Assignee MARVELL WORLD TRADE LTD., St. Michael (BB)

Claim of US Patent No. 9,092,323

1. A memory module, comprising:
a first memory configured to store (i) first data including (a) a first lookup table storing first relationships between logical
addresses and respective physical addresses and (b) a second lookup table storing second relationships between the physical
addresses and respective ones of the logical addresses, wherein the physical addresses are arranged in a plurality of different
groups, and wherein the plurality of groups correspond to respective wide erase block units, (ii) respective statuses of each
of the plurality of different groups, wherein the respective statuses include identifiers of the respective wide erase block
units that identify respective bin types of the wide erase block units, and (iii) an activity log indicating when any of the
respective statuses of the plurality of different groups has changed, and wherein a status changing corresponds to an identifier
of a respective wide erase block unit changing from a first bin type to a second bin type;

a second memory configured to (i) store second data in memory locations corresponding to the physical addresses, and (ii)
in response to a respective status of one of the plurality of groups changing, store a portion of the first data corresponding
to the one of the plurality of groups; and

a recovery module configured to update, in response to the activity log indicating that the respective status of the one of
the plurality of groups has changed, the first data with the portion of the first data corresponding to the one of the plurality
of groups.