File storage device, host apparatus, method for formatting nonvolatile semiconductor memory, and method of writing data in nonvolatile semiconductor memory
First Claim
1. A file storage device comprising a nonvolatile semiconductor memory which is accessed by a file system of a host apparatus, the nonvolatile semiconductor memory having a user data area which is accessible by the file system and in which device information indicating that the nonvolatile semiconductor memory is a nonvolatile semiconductor memory is written.
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Accused Products
Abstract
A file storage device includes a nonvolatile semiconductor memory which is accessed by a file system of a host apparatus. The nonvolatile semiconductor memory has a user data area. The user data area is accessible by the file system. Device information indicates that the nonvolatile semiconductor memory is a nonvolatile semiconductor memory and is written in the user data area.
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Citations
19 Claims
- 1. A file storage device comprising a nonvolatile semiconductor memory which is accessed by a file system of a host apparatus, the nonvolatile semiconductor memory having a user data area which is accessible by the file system and in which device information indicating that the nonvolatile semiconductor memory is a nonvolatile semiconductor memory is written.
- 9. A host apparatus into which a file storage device having a nonvolatile semiconductor memory whose data is erased by erasure block is inserted, the nonvolatile semiconductor device having a user data area which is accessible by a file system which manages data of the nonvolatile semiconductor memory, the host apparatus logically formatting the nonvolatile semiconductor memory in accordance with the file system, reading information of a size of the erasure block from the file storage device, and writing a block size information which indicates a size of the erasure block into the user data area during logical format.
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13. A method of formatting a nonvolatile semiconductor memory in which data is written by write page and erased by erasure block and which has a user data area accessible by a file system, the method comprising:
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reading information of a size of the erasure block from the nonvolatile semiconductor memory; and
writing a block size information which indicates the size of the erasure block in the user data area in accordance with the file system. - View Dependent Claims (14, 15, 16)
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17. A method of writing data in a nonvolatile semiconductor memory in which data is erased by erasure block which comprises write areas and in which erasure block size information indicating a size of the erasure block is stored, the method comprising:
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reading the erasure block size information; and
writing data in the write areas in accordance with the erasure block size information. - View Dependent Claims (18, 19)
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Specification