Method for restricting the copying of protected data in a storage device to a PC

Abstract

The invention provides a method for limiting protected data in a storing device from being copied to a personal computer (PC) end. The method includes that the protected data is copied to the storing device with a normal method; the storing device performs address analysis and recording storage on the protected data; the storing device detects a data reading command sent by the PC end and an address of data needing to be read when the storing device is connected with the PC end; the storing device compares the address required by the PC end to be accessed with an address of the protected data which are recorded and stored; and if the address required to be accessed is located in the address of the data recorded and stored, the data are transmitted to the PC end after being modified, and otherwise, the data are directly read and transmitted to the PC end. The method for limiting the protected data in the storing device from being copied to the PC end is simple to achieve, convenient to use, and dispensed with a complex authorization mechanism. The storing device can achieve the data copy limiting only through the method of firmware modifying, hardware modifying is not required, and hardware cost is not increased.

Description

technical field [0001] The invention relates to a method for limiting copying of protected data in a storage device to a PC, and can be used in the technical field of copyright protection. Background technique [0002] Copyright protection has always been an obstacle between manufacturers and consumers. On the one hand, consumers hope to obtain unrestricted use experience, on the other hand, manufacturers hope that their products can be sufficiently protected from being stolen by other manufacturers. [0003] For multimedia players, the contradiction brought about by the copyright protection mechanism is particularly obvious. Taking portable music players as an example, ordinary MP3 songs have no copyright protection mechanism, and users can freely copy and share them with others. Therefore, Microsoft has developed the WMA format that supports DRM (Digital Rights Management) technology as the digital carrier of genuine music. Song files encrypted by DRM can only be played ...

AI Technical Summary

Problems solved by technology

There are two options: one is that the song file adopts a special audio format with a copyright protection mechanism, and the player also needs to support the corresponding copyright protection mechanism. As mentioned above, the player can use the Microsoft DRM technology. The user can freely manage the song files in the player directly through the Windows Explorer, but because the purchased songs have been encrypted by DRM technology, even if the user copies them and puts them on other players, they cannot be played; Yes, the song files are in the standard MP3 format without special processing, but after the player is connected to the PC, it is necessary to use the PC software provided by the manufacturer to copy the user's own song files to the player, and the player cannot be copied to the player through this software. Copy the songs in it to achieve the purpose of copyright protection

Among these two solutions, the first one adopts the Microsoft standard DRM method, and the cost of the whole system is relatively high, and related authorization fees need to be paid, and the implementation of DRM technology on the player will also increase the cost, resulting in overall manufacturing and sales. In addition, Microsoft's DRM technology currently only supports Windows operating systems, and does not support common Linux and MAC OS; the second solution is simpler than the first one, and the player does not need to support complex encryption technology However, the manufacturer still needs to develop a special tool for the PC, and even develop corresponding versions for different operating systems. The research and development costs have increased significantly. In addition, users need to use this tool when managing song files on the player. Tools are obviously not as convenient as directly operating in the operating system, resulting in greatly reduced user experience

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