Non-systematic coded error correction

摘要

Methods are described that facilitate the detection and correction of data in memory systems or devices by encoding the data bits of a memory row or block in a non-systematic ECC code. This allows memory embodiments of the present invention to utilize reduced complexity error detection and correction hardware and/or routines to efficiently detect and correct corrupted user data in a segment of memory, such as a sector, word line row, or erase block. User data is not stored in a plaintext format in the memory array, allowing for an increased level of data security. The ECC code is distributed throughout the stored data in the memory segment, increasing the robustness of the ECC code and its resistance to damage or data corruption.

主权项

1. A method of encoding a data segment with a transform matrix for storage to a memory, the method comprising:
inputting a data segment into a non-systematic error correction code (ECC) transform matrix to output a non-systematic ECC encoded data segment, wherein the transform matrix distributes the ECC encoding across the non-systematic ECC encoded data segment; and storing the non-systematic ECC encoded data segment to the memory.