MEMORY SYSTEM
First Claim
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1. A memory system comprising:
- a nonvolatile semiconductor memory include a first area, and a second area smaller than the first area; and
a controller configured to control data stored in the nonvolatile semiconductor memory, whereinthe nonvolatile semiconductor memory is configured to store a first data accessible by a host command and to a second data inaccessible by the host command, andwhen receiving the host command, the controller writes the second data of the first area within the second area and initializes a first address information related the first data.
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Abstract
According to one embodiment, a memory system includes a nonvolatile semiconductor memory include a first area, and a second area smaller than the first area; and a controller configured to control data stored in the nonvolatile semiconductor memory, wherein the nonvolatile semiconductor memory is configured to store a first data accessible by a host command and to a second data inaccessible by the host command, and when receiving the host command, the controller writes the second data of the first area within the second area and initializes a first address information related the first data.
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Citations
19 Claims
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1. A memory system comprising:
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a nonvolatile semiconductor memory include a first area, and a second area smaller than the first area; and a controller configured to control data stored in the nonvolatile semiconductor memory, wherein the nonvolatile semiconductor memory is configured to store a first data accessible by a host command and to a second data inaccessible by the host command, and when receiving the host command, the controller writes the second data of the first area within the second area and initializes a first address information related the first data.
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2. A memory system comprising:
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a nonvolatile semiconductor memory configured to store a management table in which management information including storage positions of data stored in the nonvolatile semiconductor memory is recorded; and a controller configured to perform data transfer between a host apparatus and the nonvolatile semiconductor memory and to perform management of data stored in the nonvolatile semiconductor memory based on the management table, wherein the nonvolatile semiconductor memory is configured to store data associated with a first logical addresses accessible from the host apparatus by a first command and to store data associated with a second logical addresses inaccessible from the host apparatus by the first command, and when receiving the first command from the host apparatus, the controller collects data scattered in a first area, the data being associated with the second logical addresses, by rewriting the data associated with the second logical addresses within a second area of the nonvolatile semiconductor memory and thereafter initializes the management table corresponding to the first logical addresses. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A memory system comprising:
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a nonvolatile semiconductor memory include a first area, and a second area and a controller configured to control the nonvolatile semiconductor memory, wherein the first area is accessible by a host command, the second area is prohibited from being accessed by the host command, and when a host device sends the host command, the controller performs compaction within the second area and initializes management information.
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Specification