Storage control device with low density parity check code coding capacity and method

A low-density parity and control device technology, which is applied in the field of memory control devices, can solve the problems of lowering the data output rate of the storage device and affecting the performance, and achieves the effect of taking into account the decoding ability.

Active Publication Date: 2013-06-05
SILICON MOTION TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the decoding operation time cannot be reduced, the data output rate of the storage device will be reduced and the performance will be affected.

Method used

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  • Storage control device with low density parity check code coding capacity and method
  • Storage control device with low density parity check code coding capacity and method
  • Storage control device with low density parity check code coding capacity and method

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Embodiment Construction

[0028] Embodiments of the present invention will be described below in conjunction with related figures. In the drawings, the same reference numerals indicate the same or similar elements or process steps.

[0029] figure 1 A simplified functional block diagram of the memory control device 100 according to an embodiment of the present invention is shown. The memory control device 100 includes a memory access circuit 11 , an LDPC decoding circuit 13 , and an output circuit 15 . figure 1 The memory in the memory is a flash memory. In other embodiments, the memory may also use other volatile or non-volatile storage devices.

[0030] The memory control device 100 reads encoded data (encoded data) from the memory through the memory access circuit 11, figure 1 Only one memory access circuit 11 and one memory are shown in the figure for ease of illustration. In other embodiments, one or more memory access circuits may also be used to access one or more memories. The coded data ca...

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PUM

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Abstract

Provided is a storage control device with low density parity check code coding capacity. The storage control device with the low density parity check code coding capacity comprises a storage access circuit and a low density parity check code coding circuit. The storage access circuit can read hard information of a first code word and hard information of a second code word from a storage. The low density parity check code coding circuit can conduct coding operation according to the hard information of the first code word, when the low density parity check code coding circuit can not successfully decode the first code word, the low density parity check code coding circuit can set the storage access circuit to read soft information of the first code word and soft information of the second code word, and the low density parity check code coding circuit is set to conduct the coding operation according to the soft information of the first code word and the soft information of the second code word. Therefore, the storage control device with the low density parity check code coding capacity can adopt a proper method of matching hard coding with soft coding to take the coding capacity, energy consumption, and data output speed into account according to the situation of errors in data.

Description

technical field [0001] The invention relates to a memory control device, in particular to a memory control device capable of decoding low-density parity check codes. Background technique [0002] In various applications that require signal transmission, error correcting codes are often used so that when a signal transmission error occurs, the receiving end can correct the error and obtain a correct signal. For example, in a storage device, the memory control device will write the data into the memory after being encoded by an error correction code encoding device (encoder). The correction code decoding device (decoder) corrects errors to obtain correct data. [0003] Although error correction codes can be used in many system applications, there are still some differences among various system applications. For example, in a communication system, when the condition of the communication channel is so poor that the error correction code decoding device cannot decode correctly,...

Claims

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Application Information

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IPC IPC(8): G11C29/42
CPCY02D10/00
Inventor 杨宗杰
Owner SILICON MOTION TECH CORP
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