Method and file structures for managing data on a flash disk
US7363420B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2003 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Apr 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0246
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and data structure for managing data in a memory device. The memory device is divided into two volumes. The first volume is intended for storing relatively static data, i.e. data which does not change or is not rewritten frequently. The second volume is intended for storing dynamic data, i.e. data which is changed or rewritten frequently. Each of the volumes is divided into a number of blocks, for example erase blocks, with each block being divided into sectors. In the dynamic volume, each of the erase blocks has one sector allocated for storing metadata, and the remaining sectors in the erase block are available for storing data, other than metadata. In the static volume, each of erase blocks can store more than one sector of metadata, in addition to data other than metadata. The metadata may be stored in consecutive sectors in the erase blocks. According to another aspect, the data structure is suitable for flash disk memory devices and flash disk memory devices used for multimedia applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.