Computing device method that presents as a single file system operating system components in both executable and non-executable memory
US7610479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jul 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4401
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of operating a computing device having NAND flash memory for storage of program code and user data. At start up, only selected components of the computing device core operating system are shadowed into RAM. Other components, such as read only system files associated with the core operating system, are retained in the NAND flash memory and only shadowed into RAM upon demand. The program codes shadowed into RAM at start up and the program codes shadowed into RAM upon demand are presented to a file server of the computing device as a composite file system. The use of the composite file system reduces the amount of RAM permanently occupied by core operating system code during operation of the device and also enhances the use of the more power efficient NAND flash memory. Moreover, the boot up time of the device is also significantly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.