US 12,353,752 B2
Read disturb tracking based on statistical probability
Mohammad Nasim Imtiaz Khan, Folsom, CA (US); Yogesh B. Wakchaure, Folsom, CA (US); Eric Hoffman, Lafayette, CO (US); Neal Mielke, Los Altos Hills, CA (US); Shirish Bahirat, Longmont, CO (US); Cole Uhlman, Vancouver (CA); Ye Zhang, Shanghai (CN); and Anand Ramalingam, Portland, OR (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Sep. 22, 2021, as Appl. No. 17/481,786.
Prior Publication US 2022/0004335 A1, Jan. 6, 2022
Int. Cl. G06F 3/00 (2006.01); G06F 3/06 (2006.01); G11C 16/00 (2006.01); G11C 16/34 (2006.01)
CPC G06F 3/0655 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0679 (2013.01); G11C 16/3418 (2013.01); G11C 16/3422 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An electronic apparatus, comprising:
one or more substrates; and
a controller coupled to the one or more substrates, the controller including circuitry to control access to NAND-based storage media that includes a plurality of NAND devices, maintain respective read disturb (RD) counters for each of two or more tracked units at respective granularities, maintain respective global RD counters for each of the two or more tracked units, and, in response to a read request:
increment one or more global RD counters that correspond to the read request,
determine if a global RD counter for a tracked unit matches a random number associated with the tracked unit, and, if so determined,
increment a RD counter for the tracked unit that corresponds to the read request and generate a new random number for the tracked unit.