Patent ID: 11868646
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. A data storage device, comprising:
memory means; and
a controller coupled to the memory means, the controller configured to:
sense a first page at a first read threshold voltage and determine a first failed bit count (FBC) of the first page at the first read threshold voltage;
determine an adjusted first read threshold voltage by decreasing the first read threshold voltage by a voltage shift, wherein the adjusted first read threshold voltage is different from the first read threshold voltage;
sense the second page at the decreased first read threshold voltage and determine a second FBC of the second page at the adjusted first read threshold voltage, wherein the second pane is adjacent to the first page; and
shift the first read threshold voltage of the first page responsive to determining that the second FBC of the second page is equal to or greater than the first FBC of the first page.