Patent ID: 11923011
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A read operating method of a storage device, the read operating method comprising:
receiving, by a counter, a read command for a first memory cell from among the first memory cell and a second memory cell stacked sequentially in a first direction in a nonvolatile memory device, the first memory cell connected to a first word line and the second memory cell connected to a second word line;
calculating, by the counter, an off-cell count value of memory cells connected to the second word line;
receiving, by a comparator, a first reference count value from among reference count values stored in an OTP memory cell array;
comparing, by the comparator, the off-cell count value with the first reference count value to determine a threshold voltage shift of the second memory cell; and
determining, by the comparator, a read level of the first memory cell based on the threshold voltage shift.