Patent ID: 9747973
Date: 2017-08-29
CPC Classifications: G11C

Claim:
1. A data writing method for a solid state storage device, the data writing method comprising steps of: (a) judging whether a shutdown command is issued from a host; (b) if the shutdown command is not issued from the host, performing plural program procedures, so that plural write data from the host in a buffer are stored to a flash memory according to a program order, wherein the flash memory stores more than 2 bits per cell; and (c) if the shutdown command is issued from the host, adding plural predetermined redundant data having specified pattern into the buffer, and performing the plural program procedures, so that the write data that are not stored to the flash memory and the predetermined redundant data in the buffer are stored to the flash memory according to the program order, wherein the predetermined redundant data are irrelevant to the write data from the host.