Memory system and a control method thereof
US8185686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2009 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Jul 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7211
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A control method for the memory system is suitable for a memory system to process the user data from a host. The control unit divides the address of the storage space of the host into a plurality of logical segments for accessing data. The memory system provides a storage space with a plurality of physical segments to access data. The control method comprises the following steps. Firstly, a master table is provided in the physical memory for recording the mapping relation between the addresses of the logical units and the addresses of the physical units. When the data is written, the mapping relation between the addresses of the logical units and the addresses of the physical units is adjusted according to the wear of the physical units. Finally, the data is written into the physical segment according to the master table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.