US 12,443,352 B2
Memory system storing management information and method of controlling same
Junji Yano, Yokohama (JP); Hidenori Matsuzaki, Fuchu (JP); and Kosuke Hatsuda, Bunkyo (JP)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Apr. 25, 2024, as Appl. No. 18/645,697.
Application 18/645,697 is a continuation of application No. 18/104,352, filed on Feb. 1, 2023, granted, now 11,972,115.
Application 18/104,352 is a continuation of application No. 17/229,096, filed on Apr. 13, 2021, granted, now 11,573,712, issued on Feb. 7, 2023.
Application 17/229,096 is a continuation of application No. 16/519,627, filed on Jul. 23, 2019, granted, now 10,996,868, issued on May 4, 2021.
Application 16/519,627 is a continuation of application No. 16/119,610, filed on Aug. 31, 2018, granted, now 10,379,762, issued on Aug. 13, 2019.
Application 16/119,610 is a continuation of application No. 15/414,204, filed on Jan. 24, 2017, granted, now 10,067,698, issued on Sep. 4, 2018.
Application 15/414,204 is a continuation of application No. 14/842,352, filed on Sep. 1, 2015, granted, now 9,582,370, issued on Feb. 28, 2017.
Application 14/842,352 is a continuation of application No. 14/475,317, filed on Sep. 2, 2014, granted, now 9,164,896, issued on Oct. 20, 2014.
Application 14/475,317 is a continuation of application No. 13/859,528, filed on Apr. 9, 2013, granted, now 8,850,107, issued on Sep. 30, 2014.
Application 13/859,528 is a continuation of application No. 12/529,145, granted, now 8,443,133, issued on May 14, 2013, previously published as PCT/JP2009/052599, filed on Feb. 10, 2009.
Claims priority of application No. 2008-051340 (JP), filed on Feb. 29, 2008; and application No. 2008-051452 (JP), filed on Mar. 1, 2008.
Prior Publication US 2024/0281149 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/06 (2006.01); G06F 11/14 (2006.01); G06F 12/02 (2006.01); G11C 7/20 (2006.01); G11C 11/56 (2006.01); G11C 16/04 (2006.01); G11C 16/10 (2006.01)
CPC G06F 3/0619 (2013.01) [G06F 3/0647 (2013.01); G06F 3/065 (2013.01); G06F 3/0652 (2013.01); G06F 3/0685 (2013.01); G06F 11/1456 (2013.01); G06F 11/1471 (2013.01); G06F 12/0246 (2013.01); G11C 7/20 (2013.01); G11C 11/5628 (2013.01); G11C 16/0483 (2013.01); G11C 16/10 (2013.01); G11C 16/105 (2013.01); G06F 11/1469 (2013.01); G06F 2201/84 (2013.01); G06F 2212/7201 (2013.01); G06F 2212/7207 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory system comprising:
a first memory;
a second memory; and
a memory controller configured to:
perform management with respect to data stored in the first memory based on information stored in the second memory, the information including management information of correspondence between logical address information of the data and physical address information of the first memory;
store both first information and second information into the first memory at a different timings, the first information relating to the information stored in the second memory, the second information relating to updating the first information, the different timings including a first timing and a second timing both before power-loss event occur in the memory system, the first timing corresponding to a timing of storing the first information, the second timing corresponding to a timing of storing the second information; and
after reboot of the memory system after the power-loss, rebuild third information into the second memory based on the first and second information stored in the first memory.