Patent ID: 11961553
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method of searching a read voltage of a nonvolatile memory device that includes a plurality of memory cells that include a first state and a second state that differ from each other the method comprising:
determining a number n that represents a number of times a data read operation is performed, where n is an integer greater than or equal to two;
selecting n read voltage levels of the read voltage wherein a number of read voltage levels is equal to the number of times the data read operation is performed, wherein the n read voltage levels differ from each other;
generating n cell count values by performing n data read operations on the plurality of memory cells using all of the n read voltage levels; and
determining an optimal read voltage level of the read voltage by performing a regression analysis based on a first-order polynomial using the n read voltage levels and the n cell count values,
wherein the read voltage distinguishes the first state and the second state.