Configurable coding system and method of multiple eccs

Abstract

A configurable coding system and method of multiple error correcting codes (ECCs) for a memory device or devices are disclosed. The system includes a first ECC codec that selectively performs different error corrections with different parameters; means for providing a selected parameter to the ECC codec for initializing the ECC codec; and a second ECC codec that corrects the selected error-prone parameter in order to provide an error-free parameter to the first ECC codec.

What is claimed is: 
     
         1 . A configurable coding system of multiple error correcting codes (ECCs), a parameter includes a matrix and different matrixes define different error correcting codes, comprising:
 a first ECC codec configured to selectively perform different error corrections with different parameters, the first ECC codec being initialized by an error-free parameter;   means for providing a selected error-prone parameter; and   a second ECC codec configured to correct the selected error-prone parameter in order to provide the error-free parameter to the first ECC codec.   
     
     
         2 . The system of  claim 1 , wherein the first ECC codec comprises an encoder, a decoder or their combination. 
     
     
         3 . The system of  claim 1 , wherein the first ECC codec performs error correction for the data of at least one page of a non-volatile memory, the data of at least one block of a non-volatile memory, the data of at least one non-volatile memory or their combination. 
     
     
         4 . The system of  claim 3 , wherein the non-volatile memory is a flash memory. 
     
     
         5 . The system of  claim 1 , wherein the second ECC codec comprises a decoder. 
     
     
         6 . The system of  claim 1 , wherein said providing means comprises:
 an external memory device configured to store the different parameters from which the selected parameter is selected;   wherein the second ECC codec corrects the selected parameter based on a built-in parameter, thereby generating the error-free parameter to be provided to the first ECC codec.   
     
     
         7 . The system of  claim 6 , wherein the external memory device is a non-volatile memory. 
     
     
         8 . The system of  claim 1 , Wherein the first ECC codec performs a LDPC code. 
     
     
         9 . A configurable coding method of multiple error correcting codes (ECCs), a parameter includes a matrix and different matrixes define different error correcting codes, comprising:
 storing a plurality of different parameters;   providing a selected error-prone parameter used for configuring a ECC codec;   correcting the selected error-prone parameter to generate an error-free parameter for accordingly initializing the ECC codec; and   selectively performing an error correction based on the selected error-prone parameter;   wherein the plurality of different parameters are stored in an external memory device, and a supplementary codec is configured to load one of the stored error-prone parameters from the external memory device; and   wherein the supplementary codec corrects the loaded error-prone parameter based on a built-in parameter, thereby generating the error-free parameter to be provided to the ECC codec.   
     
     
         10 . The method of  claim 9 , wherein the ECC codec performs encoding, decoding or their combination. 
     
     
         11 . The method of  claim 9 , wherein the error correction is performed for the data of at least one page of a non-volatile memory, the data of at least one block of a non-volatile memory, the data of at least one non-volatile memory or their combination. 
     
     
         12 . The method of  claim 11 , wherein the non-volatile memory is a flash memory. 
     
     
         13 . The method of  claim 9 , wherein the external memory device is a non-volatile memory. 
     
     
         14 . The method of  claim 9 , wherein the plurality of different parameters are stored in an external memory device, and an error-free storage device is configured to store an error-free pre-parameter to be loaded to the ECC codec to firstly initialize the ECC codec;
 wherein the ECC codec loads one of the stored error-prone parameters from the external memory device, and corrects the loaded error-prone parameter based on the pre-parameter, thereby generating the error-free parameter to secondly initialize the ECC codec, and than correcting a data read from the external memory device.   
     
     
         15 . The method of  claim 14 , wherein the storage device is a static random access memory (SRAM) or a read only memory (ROM), and the external memory device is a non-volatile memory. 
     
     
         16 . The method of  claim 9 , wherein the supplementary codec comprises an ECC decoder. 
     
     
         17 . The method of  claim 9 , Wherein the ECC codec performs a LDPC code.