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Data correction method, memory control circuit unit and memory storage apparatus

A correction circuit and data correction technology, which is applied in the field of data correction, can solve problems such as data cannot be corrected correctly, and achieve the effect of improving reliability

Active Publication Date: 2017-10-31
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when reading the user data in the physical programming unit, the read data may not be able to be read due to too many error bits (for example, the number of error bits exceeds the number of error bits that can be corrected by the error checking and correction circuit). corrected

Method used

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  • Data correction method, memory control circuit unit and memory storage apparatus
  • Data correction method, memory control circuit unit and memory storage apparatus
  • Data correction method, memory control circuit unit and memory storage apparatus

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Embodiment Construction

[0085] 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 unit). Generally, a memory storage device is used with a host system so that the host system can write data to or read data from the memory storage device.

[0086] figure 1 is a schematic diagram of a host system, memory storage devices, and input / output (I / O) devices shown according to an example embodiment, and figure 2 is a schematic diagram showing a host system, a memory storage device, and an input / output (I / O) device according to another exemplary embodiment.

[0087] Please refer to figure 1 and figure 2 , the host system 11 generally includes a processor 111 , a random access memory (random access memory, RAM) 112 , a read only memory (read only memory, ROM) 113 and a data transmission interface 114 . The processor 111 , the RAM 112 , the ROM 113 and the data transmission interf...

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Abstract

The invention provides a data correction method used for a rewritable nonvolatile memory module, a memory control circuit unit and a memory storage apparatus. The data correction method comprises the steps that if first user data read from a first entity programmed unit cannot be correctly corrected according to a corresponding first parity code, at least one group parity code of a first code group which the first entity programmed unit belongs to is read to a buffer memory; the group parity code is transmitted to a correction circuit; and the user data is read to the buffer memory from the entity programmed unit belonging to the first code group in batches, and the user data and the group parity code are transmitted to the correction circuit, thereby obtaining corrected first user data corresponding to the first user data. When the data is corrected by using the group parity codes corresponding to the entity programmed units, the data correction is finished by a small amount of buffer memory spaces, so that the cost of the memory storage apparatus is effectively reduced.

Description

technical field [0001] The invention relates to a data correction method, in particular to a data correction method for a rewritable non-volatile memory module, a memory control circuit unit and a memory storage device. 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 module (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 memory modules listed above. in the multimedia device. [0003] Generally speaking, when user data is to be written into a physical programming unit of the rewritable non-volatile memory module, the memory control circuit unit will generate an error correction code corresponding to the user data and compare the user data with the corresponding The er...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0619G06F3/0638G06F3/0679
Inventor 梁鸣仁陈庆聪
Owner PHISON ELECTRONICS