Method for suppressing errors, and associated memory device and controller thereof

A memory device, comprising:

• a Flash memory comprising a plurality of blocks;
• and
• a controller arranged to access the Flash memory and manage the plurality of blocks, and further suppress errors regarding data accessed by the controller itself, wherein the controller comprises:
• a randomizer/derandomizer arranged to generate a random function according to an input seed, with the random function being utilized for adjusting a plurality of bits of the data bit by bit when the controller receives a write/read command, wherein the write/read command is utilized for instructing the controller to write the data into/read the data from the Flash memory, the controller determines whether to utilize an original seed as the input seed according to an address of the data, and with regard to at least each block of the blocks, a value of the original seed remains unvaried;
• wherein when it is determined that the original seed should be utilized as the input seed, the controller inputs the original seed into the randomizer/derandomizer, in order to generate the random function according to the original seed to adjust the data;
• and when it is determined that the original seed should not be utilized as the input seed, the controller inputs a new seed into the randomizer/derandomizer, in order to generate the random function according to the new seed to adjust the data.

A controller of a memory device, the controller being utilized for accessing a Flash memory comprising a plurality of blocks, the controller comprising:

• a read only memory (ROM) arranged to store a program code;
• a microprocessor arranged to execute the program code to control access to the Flash memory and manage the plurality of blocks, and further suppress errors regarding data accessed by the controller itself;
• and
• a randomizer/derandomizer arranged to generate a random function according to an input seed, with the random function being utilized for adjusting a plurality of bits of the data bit by bit when the controller receives a write/read command, wherein the write/read command is utilized for instructing the controller to write the data into/read the data from the Flash memory, the controller determines whether to utilize an original seed as the input seed according to an address of the data, and with regard to at least each block of the blocks, a value of the original seed remains unvaried;
• wherein when it is determined that the original seed should be utilized as the input seed, the controller inputs the original seed into the randomizer/derandomizer, in order to generate the random function according to the original seed to adjust the data;
• and when it is determined that the original seed should not be utilized as the input seed, the controller inputs a new seed into the randomizer/derandomizer, in order to generate the random function according to the new seed to adjust the data.