Fault-tolerant method and apparatus for updating compressed read-only file systems
US8201054B2 · kind B2 · utility
5Cited by
7References
9Claims
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Key dates
| Filing date | Jul 24, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Feb 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fault-tolerant approach for updating a compressed read-only file system in embedded devices using a two-step approach. In the first phase an update package creates an intermediate memory image where the data blocks are independently compressed so that, if needed, the data therein can be decompressed and read without access to any other surrounding data blocks. Then in the second phase the intermediate memory image is decompressed in a buffer so that it can be reimaged into its final form and order before being recompressed and written back to non-volatile memory over-writing the intermediate memory image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.