Unlock instant, AI-driven research and patent intelligence for your innovation.

Storage device, method and program for controlling storage device

一种存储器、存储器块的技术，应用在存储器系统、仪器、内存架构访问/分配等方向，能够解决访问耗时存储单元劣化等问题，达到防止写入性能的降低、降低频率、抑制写回的效果

Inactive Publication Date: 2009-03-18
SONY CORP
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Access to the block is time-consuming and contributes to the degradation of the memory cells within it

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Storage device, method and program for controlling storage device
  • Storage device, method and program for controlling storage device
  • Storage device, method and program for controlling storage device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. FIG. 1 is a schematic diagram outlining a typical configuration of a data processing system for implementing the present invention.

[0062] As shown in FIG. 1 , the data processing system consists of two main components: a host device 10 , and a memory card 20 which can be removably attached to the host device 10 . In this embodiment, the memory card 20 includes flash memory which is a nonvolatile memory.

[0063] The host device 10 is typically constituted by a device such as a personal computer, a digital still camera, a digital video camera, or a digital audio recorder. The host device 10 includes a CPU 11 , a memory 12 , a display unit 13 , an input / output (I / O) section 14 , and an external memory interface 15 .

[0064] The CPU 11 is connected with a memory 12 , a display unit 13 , an input / output (I / O) section 14 , and an external memory interface 1...

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

PUM

No PUM Login to View More

Abstract

Disclosed herein is a memory apparatus, comprising: a nonvolatile memory configured to allow data to be written thereto and read therefrom in units of a cluster and to permit data to be deleted therefrom in units of a block made up of a plurality of sectors; a control circuit configured to control access operations to said nonvolatile memory; a management area; a user data area; and a cache area; said management area includes a logical / physical table, and the addresses of physical blocks in the cache area.

Description

technical field [0001] The present invention relates to a memory device, a memory control method, and a program. More specifically, the present invention relates to a memory device having a nonvolatile memory such as a flash memory, and a memory control method and program for the memory device. Background technique [0002] There are various kinds of memory devices, each of which contains a flash memory and is used as an external storage device used by devices such as personal computers, digital still cameras, digital video cameras, and audio recorders. A flash memory is a memory that allows data to be randomly written to and read from in units of clusters. Data is not deleted randomly from flash memory but in units of blocks. [0003] Memory cells in flash memory degrade through repeated data updates. For this reason, the number of refresh operations on the flash memory is limited. That is, avoid accesses that are concentrated on the same cluster in order to prolong the...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/08
CPCG06F2212/2022G06F12/0866
Inventor 金子畅宏中西健一
Owner SONY CORP