Cross-decoding for non-volatile storage

摘要: Cross-decoding assists decoding of an otherwise uncorrectable error when a desired page multi-level-cell technology flash memory. A solid-state disk (SSD) controller adjusts space allocated to redundancy respectively within various pages (e.g. upper, middle, and lower pages) such that the respective have effective Bit Error Rates (BER)s, optionally including cross-decoding, approach one another. Alternatively allocation equalize time (or alternatively access time), (accessing time) accrued as result cross-decoding there is error. The adjusting via (a) ratios between for ECC user data space, and/or (b) coding rates techniques each pages. maximize total usable capacity by allocating pages, assuming be used.