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Method and system for storing data

A technology for storing data and data, applied in the field of adaptive durability coding, which can solve problems such as not allowing

Active Publication Date: 2010-11-03
GLOBALFOUNDRIES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Again, the disadvantage of these methods is that they do not allow adaptive selection of durable codes for different data

Method used

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  • Method and system for storing data
  • Method and system for storing data

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Embodiment Construction

[0023] An exemplary embodiment of the invention includes an adaptive endurance encoding system and method for finite-lived memory, in which data to be written to the memory is converted into a form that reduces wear on the memory cells, and thus Extended memory life. In an exemplary embodiment, the written data is error-resilient (ie, the data can be recovered even in the event of an error in the stored information after storage).

[0024] An exemplary embodiment includes a system and method for writing data onto a non-volatile memory device with enhanced endurance. Lossless data compression is utilized in combination with durable coding and error resilience by adapting durable coding parameters to data attributes and memory parameters such as memory page size. Therefore, high endurance gains can be achieved if the data to be written is highly compressible. Alternatively, if the data is not highly compressible, the durability code is chosen in order to ensure that the encode...

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Abstract

Adaptive endurance coding including a method for storing data that includes receiving write data and a write address. A compression algorithm is applied to the write data to generate compressed data. An endurance code is applied to the compressed data to generate a codeword. The endurance code is selected and applied in response to the amount of space saved by applying the compression to the write data. The codeword is written to the write address.

Description

technical field [0001] The present invention relates generally to computer memory and, more particularly, to adaptive endurance coding for non-volatile memory. Background technique [0002] Phase change memory (PCM) and flash memory are examples of non-volatile memory with limited endurance (also known as "limited lifetime"). After many write cycles (reset (RESET) cycles for PCM, program / erase cycles for flash memory), memory cells wear out and can no longer store information reliably, and the memory has limited durability. [0003] The life of finite-lived memory can be extended using a technique known as endurance coding, in which patterns are written to the memory such that cell wear is reduced. A disadvantage of current durable encoding schemes is that they induce data expansion and do not delineate any mechanism for adapting the parameters of durable encoding to data compressibility and memory page length. This means that a different page length has to be used for ea...

Claims

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Application Information

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IPC IPC(8): G06F12/02
CPCG06F2212/401G11C16/349G06F2212/7207G06F2212/1036G06F2212/403G06F12/0246G06F11/1012
Inventor M·弗朗斯奇尼A·贾格默汉J·P·卡里蒂斯L·A·拉斯特拉斯-蒙塔诺
Owner GLOBALFOUNDRIES INC
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