US 12,229,408 B2
Memory system and read method
Tadashi Amada, Yokohama Kanagawa (JP)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Mar. 2, 2023, as Appl. No. 18/177,673.
Claims priority of application No. 2022-098996 (JP), filed on Jun. 20, 2022.
Prior Publication US 2023/0409203 A1, Dec. 21, 2023
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0613 (2013.01) [G06F 3/0659 (2013.01); G06F 3/0679 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory system comprising:
a nonvolatile memory; and
a controller configured to:
determine a first predicted read address as a subsequent read address following an input read address from which data is to be read, based on the input read address and a preset write sequence rule;
determine a second predicted read address as the subsequent read address, based on the input read address and a read sequence history;
select one of the first and second predicted read addresses as a target read address based on address hit data indicating a level of prediction success of the first predicted read address and the second predicted read address; and
read data from the target read address of the nonvolatile memory.