APPARATUS FOR CODING AT A PLURALITY OF RATES IN MULTI-LEVEL FLASH MEMORY SYSTEMS, AND METHODS USEFUL IN CONJUNCTION THEREWITH

摘要

A method and system for writing in flash memory, the system operative for, and the method comprising, writing data onto a plurality of logical pages characterized by a plurality of different probabilities of error respectively, the writing including encoding data intended for each of the plurality of physical pages using a redundancy code with a different code rate for each individual physical page, the code rate corresponding to the probability of error in the individual logical page.