Portable data storage device

Abstract

The invention proposes a portable data storage device. The portable data storage device comprises a universal serial bus (USB) interface, a control chip, a storage chip, a trigger and an alarm device, wherein the control chip is connected with the storage chip through an address multiplexing line and is connected with the USB interface through a data line, the alarm device is connected with the control chip and the storage chip separately through data lines, the trigger is connected with the control chip and the alarm device through a data line, and a cipher and an authentication program are arranged in the control chip and are used for verifying user identification, starting the trigger according to an identification result, giving out a corresponding instruction to the alarm device when the trigger reaches a critical value and starting the cipher to encrypt data on the storage chip. The portable data storage device has dual anti-theft functions, can be used for timely giving out a remind to a user so as to prevent the storage device from losing during normal use, and also can be used for giving out an alarm sound to warn and encrypt the data when the storage device is lost accidentally, and data is prevented from being leaked; and meanwhile, the storage device is relatively small is size and is convenient to carry.

Description

technical field [0001] The invention belongs to the field of computer data storage, and in particular relates to a portable data storage device. Background technique [0002] With the development and popularization of electronic technology and computers, data storage devices such as U disks and mobile hard disks are more and more widely used. Convenience, deeply loved by people, but because a lot of data is confidential and cannot be leaked at will, the subsequent data security issues are becoming more and more prominent. Due to the small size of the storage device, it is easy to happen due to forgetting to unplug it. In the case of loss, it is also very easy to be taken away by people with ulterior motives. After the device is lost, the stored data is likely to be leaked, which will bring different degrees of loss to the owner. [0003] Some existing storage devices with encryption function generally only encrypt the device through password protection to limit device acces...

AI Technical Summary

Problems solved by technology

[0002] With the development and popularization of electronic technology and computers, data storage devices such as U disks and mobile hard disks are more and more widely used. Convenience, deeply loved by people, but because a lot of data is confidential and cannot be leaked at will, the subsequent data security issues are becoming more and more prominent. Due to the small size of the storage device, it is easy to happen due to forgetting to unplug it. In the case of loss, it is very easy to be taken away by people with ulterior motives. After the device is lost, the stored data is likely to be leaked, which will bring different degrees of loss to the owner.

[0003] Some existing storage devices with encryption function generally only encrypt the device through password protection to limit device access, thereby protecting the security of stored data, but it does not play a role in preventing the loss or loss of the device itself. Once the device is lost, even if the data is not compromised, it will cause great inconvenience to the owner

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