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Method of partitioning physical block and memory system thereof

A memory system, physical block technology, applied in memory systems, data processing input/output processes, instruments, etc., can solve problems such as low efficiency

Inactive Publication Date: 2014-10-01
SKYMEDI CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, there may be more pages in each block that need to be copied back, thus making it less efficient

Method used

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  • Method of partitioning physical block and memory system thereof
  • Method of partitioning physical block and memory system thereof
  • Method of partitioning physical block and memory system thereof

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Experimental program
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Embodiment Construction

[0037] As mentioned above, the memory system can use a hybrid mapping method with both page mapping and block mapping functions, so as to adapt to both random writing and continuous writing. According to the block mapping method, the operation of writing data must be performed on every page in the block, no matter whether there is an entire block of data to be written or not. If the size of the data to be written is only a few pages and less than the size of a block, the data must be copied from other pages in the original block to the corresponding number of pages, which is Copy Back. If there are many pages that need to be copied and restored, the efficiency of continuous writing will be reduced.

[0038] Please refer to figure 2 , figure 2 It is a schematic diagram of a sequential writing performed in a memory system 20 according to an embodiment of the present invention, the data length of which is equal to the block size. As mentioned above, when the block size is no...

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PUM

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Abstract

A method of partitioning a physical block in a memory includes: determining a sub-block size according to a data length of a sequential write and a block size; partitioning the physical block into sub-blocks, each having a size equal to the sub-block size; and mapping logical blocks to the sub-blocks.

Description

technical field [0001] The present invention relates to a method for dividing a physical block in a memory system and the memory system thereof, in particular to a method for dividing a physical block in a memory into sub-physical blocks according to the length of continuously written data and the size of a block and its memory system. Background technique [0002] A memory controller is commonly used in a memory system, especially a non-volatile memory system, and is used to manage the work of the memory. Generally, since the data stored in the non-volatile memory system will not be lost even after the power is turned off, the non-volatile memory system becomes an important medium for storing system data. Among various non-volatile memory systems, NAND Flash Memory has the advantages of low power consumption and high speed, so it is widely used in mobile electronic devices. [0003] In the NAND flash memory, the read / write operation is performed in the unit of a page (Pag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/06
CPCG06F12/0246G06F3/0644G06F2212/1016G06F2212/1044G06F2212/7201G06F2212/7202G06F3/061G06F3/064G06F3/0679
Inventor 张钰堂
Owner SKYMEDI CORPORATION