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Native memory card and management method thereof

A management method and memory card technology, applied in the field of Native cards and their management, can solve the problems of limited garbage files, no consideration of the personalization stage of smart cards, etc., and achieve the effect of effective management

Active Publication Date: 2016-04-06
HENGBAO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The processing capability of the operating system on a chip is relatively weak compared to various operating systems on the computer. Using management files to dynamically manage each update of the memory has the problem of insufficient processing capability of the operating system on a chip
[0007] 2. Due to the small storage space of the Native card, the generated garbage files are limited, and the use of special management files for management and regular sorting and merging has little significance in improving the efficiency of space usage. However, the storage space occupied by the management files, and sorting The time cost of merging is relatively large
[0008] 3. Because it is a dynamic management method for general memory, the personalization stage of smart cards is not considered

Method used

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  • Native memory card and management method thereof
  • Native memory card and management method thereof
  • Native memory card and management method thereof

Examples

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no. 1 example

[0068] go through Figure 5 , realizing the personalized management of the Native memory card, the following combination Figure 6 , to introduce how to further realize the dynamic management of the Native card.

[0069] The dynamic management method of the Native memory card includes:

[0070] Step T1, receiving an instruction to change the memory space;

[0071] Step T2, judging the instruction type, if it is an instruction to allocate storage space, then execute step T3; if it is an instruction to release storage space, then execute step T4;

[0072] Step T3, read the free page starting address file in the address area of ​​the Native memory card, allocate a suitable free page in the data area of ​​the Native memory card to the file, and jump to step T5;

[0073] This step also includes the following sub-steps:

[0074] Step T31, read the start address file of the free page in the address area 2, and obtain the start address of the free page in the data area 3;

[0075...

no. 2 example

[0093] Combination of the above Figure 6 Having introduced the first embodiment of the present application, the second embodiment of the present application will be described below.

[0094] In the second embodiment, a special type of free file generated by using the above memory management method is considered, that is, a small free file smaller than the information length of the free page. Due to the structure of the idle file, such as image 3 As shown, the free page is composed of free page information 301 and free page content 302, wherein the free page information occupies a certain length to record the start address of the next free page and the length of the free page, if a free area is smaller than the free page information The occupied length, in fact, cannot form a free file, because it cannot form free page information, so this kind of free area that cannot form a free file is called a small free file. For this type of small idle file, when the memory card manag...

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Abstract

The invention provides a management method of a Native memory card, comprising the following steps of: step T1, receiving a command of changing memorizer space; step T2, judging command type, if the command is the one for allocating the memory space, executing a step T3; if the command is the one for releasing the memory space, executing a step T4; step T3, reading an idle page initial address file of a Native memory card address area, allocating an appropriate idle page in a Native memory card data area to the file, and skipping to a step T5; step T4, releasing the file, and updating the Native memory card according to position of a newly generated idle file; step T5, judging whether the command of changing the memorizer space is executed successfully; if so, ending the method; if not, providing prompt information. According to the invention, a Native card personalization method is improved, and consequently, the management method of the Native memory card is optimized.

Description

technical field [0001] The invention relates to memory management technology, in particular to a Native card and a management method thereof. Background technique [0002] Smart card products have been widely used in e-commerce, e-government and other fields. For the development environment of the application loaded on the smart card, the smart card is divided into Java card and Native card, that is, the application loaded on the Java card is It is developed using the Java language, while the applications loaded on the Native card are developed using C or assembly language. [0003] The Native card is widely used in the mobile communication industry. The chip operating system (ChipOperatingSystem, COS) of the Native card dynamically manages the file system in the Native card, including operations such as generating, deleting, and redefining the size of the file. Storage space management for Native cards. The existing management methods mostly adopt the method of storing in...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F12/02
CPCG06F3/0638G06F3/0643G06F12/0253
Inventor 于建云底明辉都伟伟雷俊
Owner HENGBAO
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