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SD card and method for controlling data access thereof

A technology of data and control modules, applied in the field of smart cards, to achieve the effect of ensuring convenience

Inactive Publication Date: 2011-02-02
SHENZHEN NETCOM ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an SD card, aiming to solve the problem that the existing SD card cannot run the installed application program in a safe manner

Method used

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  • SD card and method for controlling data access thereof
  • SD card and method for controlling data access thereof
  • SD card and method for controlling data access thereof

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] In the embodiment of the present invention, the storage module is divided into a public area storage unit and a private area storage unit, and the firmware unit of the storage isolation mechanism prevents external devices from illegally accessing the private area storage unit, which can only be accessed after authentication, ensuring SD The convenience of traditional large-capacity data storage access applications can also install some application programs according to the needs of users, run the above-mentioned application programs in a safe and protected manner, and store and access data. ...

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Abstract

The invention is suitable for the technical field of an intelligent card, providing an SD card and a method for controlling the data access thereof. The SD card comprises an interface module, a memory module and a control module which is respectively connected with the memory module and the interface module, wherein the memory module comprises a public area memory unit and a private area memory unit; and the control module comprises an SD card direct access unit which is used for controlling outer equipment to access the public area memory unit, a memorizing and isolating mechanism firmware unit which is used for preventing the private area memory unit from being illegally accessed by the outer equipment, and a virtual machine operation system unit which is used for installing some application programs according to the requirement of the user and running the application programs by combining with the memorizing and isolating mechanism firmware unit by means of safety protection. According to the invention, the method not only can reserve the convenience and fastness of the date memory and the data access of the SD card but also install the application programs according to the requirement of the user, and can perform the application programs by means of the safety protection.

Description

technical field [0001] The invention belongs to the technical field of smart cards, in particular to an SD card and a data access control method thereof. Background technique [0002] SD card (Secure Digital Memory Card) Chinese translation is a safe digital card, which is a new generation memory device based on semiconductor flash memory, which is widely used in portable devices, such as digital cameras, personal digital assistants (PDA) and Multimedia player etc. The SD card is jointly developed by Panasonic, Toshiba and SanDisk of the United States. It has high memory capacity, fast data transmission rate, great mobility flexibility and good security. [0003] The structure of the SD card can ensure the security of digital file transmission, and it is also easy to reformat, so it has a wide range of applications. Multimedia files such as music, movies, and news can be conveniently stored in the SD card. [0004] Existing SD card comprises: interface module, control modu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/07G06K19/073
CPCG06F21/78G06F2221/2105G06F12/1433
Inventor 杨天柱李志雄
Owner SHENZHEN NETCOM ELECTRONICS CO LTD
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