Patent ID: 11971826
Assignee: SANDISK TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method, comprising:
reading a first page of data stored in a first plane of non-volatile memory cells of a memory device to determine hard bit values and corresponding soft bit values for the first page;
storing the hard bit values and corresponding soft bit values for the first page in a first cache buffer on a die of the memory device;
transferring the corresponding soft bit values for the first page over a first segment of an internal data bus on the die from the first cache buffer to a first compression circuit on the die;
compressing the corresponding soft bit values for the first page by the first compression circuit;
transferring the compressed corresponding soft bit values for the first page over the first segment from the first compression circuit to the first cache buffer;
accumulating the compressed corresponding soft bit values for the first page in the first cache buffer;
transferring the accumulated compressed corresponding soft bit values for the first page over the first segment to an input-output circuit on the die;
concurrently with one or both of transferring the corresponding soft bit values for the first page from the first cache buffer to the first compression circuit on the die and transferring the compressed corresponding soft bit values for the first page from the first compression circuit to the first cache buffer, transferring data from a second cache buffer on the die over a second segment of the internal data bus;
reading a second page of data stored in a second plane non-volatile memory cells of a memory device to determine hard bit values and corresponding soft bit values for the second page; and
storing the hard bit values and corresponding soft bit values for the second page in the second cache buffer, and
wherein transferring data from the second cache buffer over the second segment includes:
concurrently with one or more of transferring the corresponding soft bit values for the first page from the first cache buffer to the first compression circuit on the die, transferring the compressed corresponding soft bit values for the first page from the first compression circuit to the first cache buffer, and transferring the accumulated compressed corresponding soft bit values for the first page to the input-output circuit:
transferring the corresponding soft bit values for the second page over second segment from the second cache buffer to a second compression circuit on the die;
compressing the corresponding soft bit values for the second page by the second compression circuit; and
transferring the compressed corresponding soft bit values for the second page over the second segment from the second compression circuit to second first cache buffer.