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US 7,774,681 B2Granted
Data protection system
AssigneeInPhase Technologies, Inc.
InventorsTod R. Earhart, Mark Ayres, Will Loechel, Adrian Hill, Kenton Pharris, Kevin Curtis, William L. Wilson
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Abstract
The present invention provides systems and methods for logically organizing data for storage and recovery on a data storage medium using a multi-level format. The present invention also provides systems and methods for protecting data stored on data storage medium so that the data may be recovered without errors.
Claims11
A method for storing data comprising the steps of:
- (a) providing data stored as data books on a holographic storage medium;
- and
- (b) recovering one or more of the data books when one or more of the data books is corrupted or missing, wherein each data book comprises a plurality of data pages organized into one or more chapters, wherein the one or more chapters comprise a plurality of chapters arranged in an anthology, and wherein each data page of the plurality of data pages includes:
- a page header providing a physical address for the data page and a position of the data page within a chapter of the one or more chapters;
- and
- page user data comprising the holographic data;
- and
- page level error correction codes for allowing the data page to be recovered or reconstructed when the data page includes errors, and wherein the anthology includes:
- a plurality of redundant chapters for allowing one or more of the plurality of chapters to be recovered or reconstructed when the anthology includes errors, and wherein step (b) comprises recovering one or more of the plurality of chapters using one or more of the redundant chapters.
6 more elements
Dependencies are inferred from the claim text.