Patent ID: 8510637
Filing Date: 2013-08-13
Classification: G11C

Abstract:
1. A data reading method for a rewritable non-volatile memory module, wherein the rewritable non-volatile memory module has a plurality of physical pages, the data reading method comprising: grouping the physical pages into a plurality of physical page groups; setting a first threshold voltage set for a first physical page set among the physical page groups; applying the first threshold voltage set to read first data from a first physical page, wherein the first physical page belongs to the first physical page group; calculating a plurality of compensation voltages corresponding to the threshold voltages of the first threshold voltage set when the first data is corrected by an error checking and correcting circuit to generate corrected data and an error bit number corresponding to the first data is not smaller than an error bit threshold; using the compensation voltages to adjust the threshold voltages of the first threshold voltage set; and applying the adjusted threshold voltages of the first threshold voltage set to read data from the physical pages belonging to the first physical page group.