DATA-STORAGE DEVICE AND DATA ERASING METHOD
First Claim
1. A data-storage device, comprising:
- a flash memory, comprising a plurality of blocks, wherein each of the blocks comprises a plurality of pages; and
a controller, arranged to receive an erase signal from a host, and enable the flash memory to execute an erasing process on at least one first block of the blocks in response to the erase signal, sequentially, wherein a specific page of the first block has been written by a predetermined value and the other pages of the first block in exception to the specific page have been erased after the erasing process executed on the first block is completed.
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Accused Products
Abstract
The present invention provides a data-storage device. The data-storage device includes a flash memory and a controller. The flash memory includes a plurality of blocks, and each of the blocks includes a plurality of pages. The controller is arranged to receive an erase signal from a host, and enable the flash memory to sequentially execute an erasing process on at least one first block of the blocks in response to the erase signal, wherein a specific page of the first block has been written by a predetermined value and the other pages of the first block in exception to the specific page have been erased after the erasing process executed on the first block is completed.
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Citations
17 Claims
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1. A data-storage device, comprising:
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a flash memory, comprising a plurality of blocks, wherein each of the blocks comprises a plurality of pages; and a controller, arranged to receive an erase signal from a host, and enable the flash memory to execute an erasing process on at least one first block of the blocks in response to the erase signal, sequentially, wherein a specific page of the first block has been written by a predetermined value and the other pages of the first block in exception to the specific page have been erased after the erasing process executed on the first block is completed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12)
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9. A data erasing method, applied to a data-storage device, wherein the data-storage device comprises a flash memory, the flash memory comprises a plurality of blocks, and the data erasing method comprises:
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erasing data of a first block of the blocks in response to an erase signal; and writing a predetermined value in to a specific page of the pages of the first block after all of the pages of the first block have been earsed. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification