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Method for preventing flash memory data from being lost, solid state disk controller and solid state disk

A solid-state hard drive, data loss technology, applied in the protection of storage content to prevent loss, redundancy in computing for data error detection, electrical digital data processing, etc.

Pending Publication Date: 2021-04-09
SHENZHEN DAPU MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the embodiments of the present invention is how to successfully solve the problem of sharing physical pages caused by abnormal power failure of SSD without additional cost

Method used

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  • Method for preventing flash memory data from being lost, solid state disk controller and solid state disk
  • Method for preventing flash memory data from being lost, solid state disk controller and solid state disk
  • Method for preventing flash memory data from being lost, solid state disk controller and solid state disk

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0041] The method for preventing flash memory data loss provided by the embodiments of the present invention, the solid-state di...

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Abstract

The invention relates to a solid state disk control technology, in particular to a method for preventing flash memory data from being lost, a solid state disk controller and a solid state disk. The method comprises the steps of obtaining a number of a target segment where a slow page corresponding to a fast page super page is located when it is detected that a solid state disk generates a power failure behavior and the page written when the power failure behavior occurs is the fast page super page; acquiring backup data and first slow page data of the target segment according to the serial number; and calculating and recovering second slow page data according to the backup data and the first slow page data. According to the invention, the problem of physical page sharing can be solved, the stability of flash memory data is improved, and extra cost does not need to be increased.

Description

technical field [0001] The invention relates to solid-state hard disk control technology, in particular to a method for preventing flash memory data from being lost, a solid-state hard disk controller, and a solid-state hard disk. Background technique [0002] Solid State Drives (SSD) are hard disks made of solid-state electronic storage chip arrays, which have been widely used in various occasions. Due to their excellent performance, power consumption, and environmental adaptability, they are gradually Replace traditional hard drives. At present, whether it is the SSD consumer market or the enterprise market, TLC flash memory has become the current mainstream storage medium. [0003] A cell (cell) of TLC flash memory can represent 3 bits, 128K cells constitute a word line, the first bit of all cells in the word line constitutes the slow page (Lower Page), and the second and third bits constitute the slow page respectively Fast page (UpperPage) and super page (Extra Page)....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/79G06F12/16G06F11/14
CPCG06F21/79G06F12/16G06F11/1456G06F11/1448
Inventor 张吉兴印中举于洲
Owner SHENZHEN DAPU MICROELECTRONICS CO LTD
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