Method for managing the address mapping table in a flash memory
US8185688B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2006 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | May 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1009
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for data management in a flash memory medium is provided in the present invention, The method comprises the following steps: dividing a plurality of blocks of the flash memory medium into two or more sections; generating a section-address-mapping table by scanning logic addresses in the blocks in each section; storing the section-address-mapping table into a backup block in each section; and performing an operation of writing/reading by reading the section-address-mapping table, storing the section-address-mapping table to a RAM, and performing a conversion between a physical address and a logic address based on the section-address-mapping table stored in the RAM. Since the section-address-mapping tables are stored in the backup block in respective sections, when an operation of writing/reading is performed and it is necessary to switch to a section-address-mapping table for a next section, data stored in the next section can be read out based on the section-address-mapping table stored in the backup block in the next section, without needing to scan each block in the next section for generating a new section-address-mapping table dynamically. Therefore, the method of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.