Patent ID: 8276046
Filing Date: 2012-09-25
Classification: G06F,G11C

Abstract:
1. A memory data storage apparatus, comprising: a data storage unit that stores data and data detection information; a determination unit that determines a number of bits of the data and a number of bits of the data detection information to be stored in a memory cell; a length information storage unit that stores a number of bits of each of the data and data detection information; an error correction decoding unit that calculates a BER of the stored data based on the data detection information; and a control unit that compares the calculated BER and a reference threshold error rate, wherein the determination unit redetermines the number of bits of the data or the number of bits of the data detection information based on a result of the comparing, and the data storage unit re-stores the data based on the redetermined number of bits of the data or re-stores the data detection information based on the redetermined number of bits of the data detection information.