Secure digital (SD) memory card with switchable chips and control method

Abstract

The invention discloses a secure digital (SD) memory card with switchable chips and a control method. The SD memory card physically comprises an SD controller, a public memory chip and a secure memory chip. After the secure SD memory card is installed on an intelligent terminal and powered on, the SD controller opens the public memory chip and closes the secure memory chip, and performs switching between the different memory chips after receiving a control instruction of 'switching to the secure memory chip' or 'switching to the public memory chip' sent by special control software, an intelligent terminal file system only displays one of memory chips and reads and writes user data of the SD memory card to the memory chip. The special control software performs identity authentication to users and can send the control instruction after the authentication is passed. The secure SD memory card with switchable chips and the control method can be widely applied to various intelligent terminals and safely memorize and use files needing protection and remarkably improve the safety of various mobile application.

Description

technical field [0001] The present invention relates to the field of static memory technology equipment and the field of information security technology, in particular to the secure storage and application of SD cards, and specifically refers to a secure SD card with switchable memory chips and a control method. Background technique [0002] SD card is a portable memory card. SD cards are available in Standard SD, Mini SD, Micro SD and other packaging forms. Due to the small size and large storage capacity of the SD card, it has been widely used in various smart terminals such as mobile phones, tablet computers, digital cameras, digital video cameras, personal digital assistants (PDAs), multimedia players, and computers. The card is prone to some information security risks, the most common of which is the loss of private files caused by the loss of smart terminals and SD cards. [0003] Taking mobile phones as an example, as the processing power and intelligence of mobile ...

AI Technical Summary

Problems solved by technology

Once the mobile phone is lost, these sensitive files will be lost, and are very likely to be misused by others, and even cause serious adverse effects

[0004] The above security risks of ordinary SD cards have caused a wide range of threats to the use of smart terminals. Therefore, it is of positive social significance to propose a secure SD card that can solve the above problems.

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