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Methods and apparatus to detect and correct errors in destructive read non-volatile memory

A non-volatile, memory-based technology applied in the field of errors in non-volatile memory, capable of solving problems such as no longer usable, damaged, deformed, etc.

Active Publication Date: 2018-07-17
TEXAS INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If power is lost during a read or write-back operation, the values ​​originally stored in memory become deformed, corrupted, or no longer usable

Method used

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  • Methods and apparatus to detect and correct errors in destructive read non-volatile memory
  • Methods and apparatus to detect and correct errors in destructive read non-volatile memory
  • Methods and apparatus to detect and correct errors in destructive read non-volatile memory

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Embodiment Construction

[0013] Example methods and apparatus disclosed herein relate to correcting data symbol errors caused by power change events during read, write, and / or write-back operations in destructively read non-volatile memory Occurs when the memory for is corrupted (for example, corrupted). As used herein, the term "power change event" is defined to include any fluctuation in voltage, current, power, etc., such as a total loss of power (e.g., a mains outage), a reduction in power (e.g., a brownout), an increase in power ( For example, power surges), or other fluctuations from a constant supply of power.

[0014] During a typical digital device power-up process such as may be performed by a processor, the device is connected to a power source, allowed to stabilize, boots from non-volatile memory, and begins normal operation. If a power change event occurs during the power-on process, the device repeats the power-on process. If the contents of the non-volatile memory are not affected by ...

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Abstract

In described examples of methods and apparatus (102) to detect and correct errors in destructive read non-volatile memory (104), the method and apparatus (102) determine, in response to stabilizing apower supply, a status signature stored in non-volatile memory (104). In examples where the status signature is not normal, the methods and apparatus (102) decode an error correction code that is encoded in the destructive read non-volatile memory (104).

Description

technical field [0001] This document relates generally to destructively read memory, and more particularly, to methods and apparatus for detecting and correcting errors in destructively read non-volatile memory. Background technique [0002] In recent years, low-power computing applications have become more valuable as the technology shrinks in size. Non-volatile memory is often used in low-power computing applications because non-volatile memory retains data when power is removed. Some types of non-volatile memory have destructive read operations that require the value being read to be written back to memory. If power is lost during a read or write-back operation, the values ​​originally stored in memory become deformed, corrupted, or no longer usable. Contents of the invention [0003] In an example of the described method and apparatus for detecting and correcting errors in a destructively read non-volatile memory, the method and apparatus determine a status flag stor...

Claims

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Application Information

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IPC IPC(8): G11C29/42
CPCG06F11/1048G11C11/22G11C29/021G11C29/04G11C29/42G11C29/44G11C29/4401G11C2029/0407G06F11/3037G06F11/3062G06F11/3034G06F11/1068G11C16/26G11C16/30G11C29/52
Inventor 朱玉明马尼什·戈埃尔张赛
Owner TEXAS INSTR INC
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