US Patent 10042568 Memory system and operating method thereof

A memory system may include: a memory device comprising a plurality of memory blocks, each memory block comprising a plurality of pages; a controller suitable for performing a command operation on the memory blocks, the command operation including checking one or more parameters of each of the memory blocks, selecting at least one source memory block from the memory blocks according to the checked one or more parameters, and storing data stored in the at least one source memory block in a target memory block among the memory blocks.