Flash memory data control method and system

A control method and data technology, applied in the storage field, can solve the problems of low utilization rate of flash memory storage space and waste of storage space, and achieve the effect of reducing the number of times, reducing space waste, and utilizing storage space.
CN106528446AActive Publication Date: 2017-03-22深圳市先天海量技术有限公司
7 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
深圳市先天海量技术有限公司
Publication Date
2017-03-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a flash memory data control method and system. The control method includes the following steps that the logical block number and deviation number of pages in a block are obtained according to logic page number of read / write data; whether a corresponding first physical block number exists or not is judged according to the logical block number and a first preset mapping table, and if not, a blank physical block is searched for to carry out operation of data writing or read finishing; if yes, physical page tables in the first physical block number are sequentially read to determine whether the physical page corresponding to the deviation number of the pages in the block exists or not, and if yes, data writing or reading is carried out on the corresponding physical page; if not, whether a corresponding second physical block number exists or not is determined according to the first physical block number and a second preset mapping table, and if yes, physical page tables of the second physical block number are sequentially read to determine whether the physical page corresponding to the deviation number of the pages in the block exists in the second physical block number or not.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of storage technologies, in particular to a method and system for controlling flash memory data. Background technique

[0002] SSD (Solid State Disk) generally refers to a solid-state hard disk composed of NAND flash memory (Flash). Its special feature is that it has no mechanical structure and uses traditional NAND Flash characteristics to read and write functions in the form of block writing and erasing. , so the efficiency of reading and writing is very dependent on the design of reading and writing technology. Compared with the current traditional hard disk, SSD has the advantages of low power consumption, shock resistance, high stability, and low temperature resistance. Since the data on the SSD is stored on the semiconductor memory, it can complete the I / O (input / output) operation on the storage unit at any location in less than one millisecond, so it is the most critical I / O for many applications. O performan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More