DATA STORAGE DEVICE AND OPERATING METHOD THEREOF
First Claim
Patent Images
1. An operating method of a data storage device, the operating method comprising:
- comparing the number of address mapping table segments containing changed address mapping information with a backup reference value; and
backing up the address mapping table segments containing the changed address mapping information in response to the comparison result.
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Abstract
An operating method of a data storage device includes comparing the number of address mapping table segments containing changed address mapping information with a backup reference value, and backing up the address mapping table segments containing the changed address mapping information in response to the comparison result.
11 Citations
20 Claims
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1. An operating method of a data storage device, the operating method comprising:
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comparing the number of address mapping table segments containing changed address mapping information with a backup reference value; and backing up the address mapping table segments containing the changed address mapping information in response to the comparison result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A data storage device comprising:
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a nonvolatile memory device; a volatile memory device suitable for storing an address mapping table divided into a plurality of address mapping table segments, in order to map a physical address of the nonvolatile memory device to a logical address provided from a host device; and a controller suitable for controlling the nonvolatile memory device based on the address mapping table loaded into the volatile memory device in response to a request from the host device, wherein the controller backs up address mapping table segments containing changed address mapping information into the nonvolatile memory device in response to a comparison result obtained by comparing the number of the address mapping table segments containing the changed address mapping information with a backup reference value. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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10. The data storage device according to claim wherein the controller backs up the address mapping table segments containing the changed address mapping information from the volatile memory device into the nonvolatile memory device, when the number of the address mapping table segments containing the changed address mapping information is greater than or equal to the backup reference value.
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17. A data storage device comprising:
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a nonvolatile memory device; and a controller suitable for controlling the nonvolatile memory device based on an address mapping table in response to a request from a host device, wherein the controller comprises; a storage unit suitable for storing the number of address mapping table segments containing changed address mapping information, and a comparison unit suitable for comparing the number of the address mapping table segments containing the changed address mapping information with a backup reference value, wherein the controller dynamically performs a backup operation for the address mapping table in response to a comparison result from the comparison unit. - View Dependent Claims (18, 19, 20)
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Specification