Data processing method, memory controller and memory storage device

A technology of memory controller and data processing, which is applied in the direction of electrical digital data processing, static memory, memory system, etc., and can solve problems such as communication file overwriting

Active Publication Date: 2013-07-24
PHISON ELECTRONICS
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Problems solved by technology

[0005] However, if the host system performs a write operation before re-reading the file system information of the memory storage device after the memory storage device is formatted, the file system information temporarily stored in the buffer memory of the host system does not include the above-mentioned The information of the communication file, therefore, the host system may write data to the address used to store the above communication file, causing the communication file to be overwritten

Method used

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

Examples

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Embodiment Construction

[0094] Generally speaking, a memory storage device (also called a memory storage system) includes a rewritable non-volatile memory module and a controller (also called a control circuit). Typically memory storage devices are used with a host system so that the host system can write data to or read data from the memory storage device.

[0095] Figure 1A A host system and a memory storage device are shown according to the first exemplary embodiment.

[0096] Please refer to Figure 1A , the host system 1000 generally includes a computer 1100 and an input / output (input / output, I / O) device 1106 . The computer 1100 includes a microprocessor 1102 , a random access memory (random access memory, RAM) 1104 , a system bus 1108 and a data transmission interface 1103 . The microprocessor 1102 executes the operating system 1110 and the application program 1120 installed in the random access memory 1104 , so that the host system 1000 provides corresponding functions according to the user'...

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Abstract

The invention relates to a data processing method, a memory controller and a memory storage device. The data processing method is used for processing data in the memory storage device which is provided with a plurality of solid blocks. The method comprises the following steps of dividing the solid blocks into a data area, a vacant area and a system area, and configuring a plurality of logic addresses, wherein the logic addresses are formatted into a file configuration sheet area with a plurality of cluster entry fields, a root directory area with a plurality of directory entry fields, and a file area with a plurality of clusters; starting to store a communication file from the Kth cluster of the file area; recording a file description block of the corresponding communication file in the Mth directory entry field; and storing an end-of-file code in the cluster entry field of the last cluster stored in the corresponding communication file, wherein K and M are positive integers which are respectively greater than 1. The method is used for preventing the communication file from being overwritten after the communication file is formatted in the memory storage device.

Description

technical field [0001] The invention relates to a data processing method of a memory storage device, in particular to a data processing method for preventing pre-stored files from being overwritten after the memory storage device is formatted, and 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 the rewritable 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 devices such as the above examples. in multimedia devices. [0003] In particular, as users gradually accept the use of electronic wallets and prepaid stored value, the use of smart cards is becoming more and more popular. A smart card (Smart Card) is an integrated...

Claims

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Application Information

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IPC IPC(8): G06F12/00G11C16/06
Inventor 詹清文黎焕升
Owner PHISON ELECTRONICS
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