METHOD OF PROTECTING A CONFIGURABLE MEMORY AGAINST PERMANENT AND TRANSIENT ERRORS AND RELATED DEVICE

摘要

The subject of the invention is a method of protecting a digital memory against permanent and transient errors and a related device. The digital data being stored in at least one storage area (104), said area corresponding to a storage matrix composed of memory cells organized as a given number of rows and columns, said method comprises: an encoding step (101) generating code words from data organized as binary words by applying an asymmetric code introducing at least two different levels of protection, the first so-called high level of protection being associated with a first subgroup of bits of the code word and a second so-called low level of protection being associated with a second subgroup of the same word; a step of exchanging positions of the bits of the code word (102) mapping, for their storage, the bits of high level of protection to the columns of the storage area comprising defective memory cells and the bits of low level of protection to the remaining columns. The invention applies in particular to the fields of digital electronics and nanometric technologies. The invention may be used, for example, in data storage systems.