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Data protection method, memory controller and memory storage device

A memory controller and data protection technology, applied in the protection of storage content to prevent loss, memory address/allocation/relocation, etc., can solve the problems that the memory storage device cannot provide functions and can no longer be used.

Active Publication Date: 2016-01-20
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the user deletes these files by mistake, the memory storage device will not be able to provide these functions, and even cannot be used anymore

Method used

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  • Data protection method, memory controller and memory storage device
  • Data protection method, memory controller and memory storage device
  • Data protection method, memory controller and memory storage device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0065] figure 1 is a schematic block diagram of a host system and a memory storage device shown according to an example embodiment.

[0066] Please refer to figure 1 , the host system 1000 includes a microprocessor 1102 , a storage device 1104 , a cache memory 1106 and an input / output device 1108 . When the host system 1000 is turned on, the microprocessor 1102 executes the operating system 1110 installed in the storage device 1104 , so that the host system 1000 provides corresponding functions according to user operations. For example, in the case where the host system 1000 is a mobile phone system and the operating system 1110 is Symbian, Android or other operating systems, when the host system 1000 is turned on, the user can operate the host system 1000 through the input / output device 1108 to perform communication, Video playback and other functions. Although in this exemplary embodiment, the host system 1000 is illustrated as a mobile phone system, however, in another e...

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PUM

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Abstract

The invention relates to a data protection method, a memory controller and a memory storage device. The data protection method is used for protecting a subdirectory stored in a replicate type non-volatile memory module and at least one prestored file in the subdirectory. The method comprises the following steps of receiving a writing instruction from a host system; and judging whether an writing address indicated by the writing instruction is an address of a file description block stored in the subdirectory; when the writing address is the address of the file description block stored in the subdirectory, judging whether one part of a data string corresponding to the writing instruction is the same as the corresponding content recorded in the file description block of the subdirectory or not; and if one part of the data string corresponding to the writing instruction is the not same as the corresponding content recorded in the file description block of the subdirectory, transferring the information which cannot be written to the host system.

Description

technical field [0001] The present invention relates to a data protection method, and in particular to a data protection method for protecting files stored in a rewritable non-volatile memory module, a memory controller and a memory storage device using the method. Background technique [0002] Digital cameras, mobile phones, and MP3 players have grown rapidly in recent years, making consumers' demand for storage media also increase rapidly. Since non-volatile memory (for example, flash memory) has the characteristics of data non-volatility, power saving, small size, and no mechanical structure, it is very suitable for being built in various portable multimedia devices such as the above examples. middle. [0003] In addition, in order to provide more added value of the memory storage device, the manufacturer of the memory storage device will pre-store some application-specific files for access by users or corresponding application programs when manufacturing the memory stor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/16G06F12/06
Inventor 林亲民
Owner PHISON ELECTRONICS