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Data writing method, memory storage device and memory controller

A technology for memory controller and data writing, which is applied in the direction of input/output to record carrier, generation of response error, error detection of redundant code, etc. It can solve the problem of inefficient use of memory space, achieve increased use efficiency, The effect of increasing safety

Active Publication Date: 2014-12-03
PHISON ELECTRONICS
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  • Description
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AI Technical Summary

Problems solved by technology

However, when only a small number of memory chips (for example, 2) are included in the rewritable non-volatile memory module, a large proportion of the memory space will be used to store the error check code, resulting in the memory space use inefficient

Method used

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

Examples

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Embodiment Construction

[0069] 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 such that the host system can write data to or read data from the memory storage device.

[0070] Figure 1A It is a schematic diagram of a host system and a memory storage device according to an exemplary embodiment.

[0071] Please refer to Figure 1A , the host system 1000 generally includes a computer 1100 and an input / output (Input / Output, hereinafter referred to as I / O) device 1106 . The computer 1100 includes a microprocessor 1102 , a random access memory (Random Access Memory, RAM for short) 1104 , a system bus 1108 and a data transmission interface 1110 . Figure 1B It is a schematic diagram of a computer, an input / output device and a memory storage device according to an exemplary embodiment. The input / output device 1106...

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Abstract

The invention provides a data writing method, a memory storage device and a memory controller for controlling a rewritable non-volatile memory module. The rewritable non-volatile memory module comprises at least one memory chip, wherein each memory chip comprises a plurality of entity erasing units. The data writing method comprises the following steps: writing data into at least one first entity erasing unit; generating a first error check code and a second error check code according to the data, wherein the number of bits which can be checked by the second error check code is greater than the number of bits which can be checked by the first error check code; writing the second error check code into a second entity erasing unit, wherein the first entity erasing units and the second entity erasing unit belong to the same memory chip. Thus, a memory space can be more efficiently used.

Description

technical field [0001] The present invention relates to a data writing method, and in particular to a data writing method for a rewritable non-volatile memory module, a memory storage device and a memory controller. Background technique [0002] The rapid development of digital cameras, mobile phones and MP3 players in recent years has led to a rapid increase in consumer demand for storage media. Since the rewritable non-volatile memory module (such as flash memory) has the characteristics of data non-volatility, power saving, small size, and no mechanical structure, it is very suitable for being built into various portable multimedia devices listed above . [0003] Generally, in order to ensure data security, the data stored in the rewritable non-volatile memory module will be encoded to generate an error check code. If an error occurs in the data, this error check code can be used to correct the error that occurred. One approach is that the rewritable non-volatile memor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10G06F3/06
Inventor 梁鸣仁
Owner PHISON ELECTRONICS
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