On-the-fly repair method for memory
US8527839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2011 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Mar 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An on-the-fly repair method for a memory includes: performing a block erase operation on the memory; checking whether the block erase operation is passed or not; finding whether there is any available and healthy redundancy block in the memory if the block erase operation is not passed; programming an address of a failed block to be repaired, an enable bit and at least one error correction bit into both first and second redundancy information regions in a redundancy information set of the memory; checking whether error in the first and the second redundancy information regions is recoverable based on the error correction bit; and if the error is recoverable, then programming the redundancy information set as effective to replace the failed block by the redundancy block related to the effective redundancy information set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.