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US 7,681,008 B2Granted
Systems for managing file allocation table information
AssigneeSanDisk Corporation
InventorsAndrew Tomlin, Sergey Anatolievich Gorobets
Life of this patent
Estimating the term…
Abstract
In a nonvolatile memory system, a host allocates clusters and records allocation information in a File Allocation Table that is stored in the nonvolatile memory. A controller separately allocates certain data and records allocation in a record in a volatile memory. File Allocation Table information provided to the host is modified according to the record in the volatile memory.
Claims13
A nonvolatile memory system comprising:
- a nonvolatile memory array that stores data from a host and stores a file system structure that indicates allocation of the data by the host to at least a first portion of a logical address space;
- a controller that manages data in the nonvolatile memory array, the controller allocating at least a second portion of the logical address space without indicating the allocation of the second portion in the file system structure;
- and
- a volatile memory that records allocation of the second portion of the logical address space by the controller.
1 more element
A nonvolatile memory system comprising:
- a nonvolatile memory array that stores data from a host and stores a file system structure that indicates allocation of the data by the host;
- and
- a memory controller that manages data in the nonvolatile memory array, the memory controller including an editor that modifies the file system structure from the nonvolatile memory array according to a record stored in a volatile memory, the memory controller sending the modified file system structure to the host in response to a host request.
Dependencies are inferred from the claim text.