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US 7,613,894 B2Granted
Power loss recovery in non-volatile memory
OwnerHong Yu Wang, John Rudelicinventors
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Abstract
A method that may be used in a no bit-twiddling file system of a non-volatile memory. The method comprises writing to a non-volatile memory a data sector of a file system, and writing to the non-volatile memory of a control sector that comprises a first seed at a start of the control sector, a pointer to the data sector and a second seed at an end of the control sector. The method further comprises updating a link structure table entry associated with the control sector.
Claims10
A system comprising:
- a non-volatile memory comprising a file system;
- a volatile memory comprising a link structure, wherein the link structure includes a link state of a sector in the file system;
- and
- a processor to determine a real state of a sector of the non-volatile memory based on the link state of the sector and a program state of the sector, wherein
- the real state of the sector includes whether the sector is empty, valid, invalid, or corrupt,
- the link state indicates whether the sector is linked to the file system of the non-volatile memory, and
- the program state indicates whether or not data has been written to the sector and, if data has been written to the sector, whether or not the writing of the data to the sector was complete.
4 more elements
Dependencies are inferred from the claim text.