Duplication preventing method for digital data file, and recording medium recorded with duplication preventing program

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a method for preventing unauthorized duplication of a digital data file such as a digital audio data file or a digital video data file, and a recording medium on which the duplication prevention program is recorded. When selling or distributing for free, a code that can identify the place of purchase is given, and when uploading a digital data file from a digital data player to a personal computer, etc., the uploading can be restricted by the code value. It relates to a computer-readable recording medium on which the copy protection method and the copy protection program are recorded.

【0002】

[Conventional technology]

Conventionally, as an example of a digital data player that processes a digital data file, an MPEG1-Layer3 (hereinafter referred to as MP3) player utilizes an audio data compression technology corresponding to the MP3 to play desired music from a computer communication network. It is used as a portable digital audio device that can be downloaded and played. In particular, MP3 players store music in the shape of MP3 files, so there are almost no failures, and they are as good as CDs (Compact Disks) in sound quality, compact and lightweight. Therefore, it is so active that it can be carried even during exercise, and is attracting attention as a substitute product for portable cassette tape recorders and CD players in the future.

【0003】

Digital data files used in such MP3 players should be downloaded from digital data file suppliers (servers) to personal computer terminals via communication networks such as the Internet, and then downloaded to MP3 players for use. On the other hand, uploading and using the digital data file downloaded in this way from a portable digital player such as MP3 to a personal computer terminal causes problems such as copyright. It was.

【0004】

However, as portable digital data players such as MP3 players become more widespread and the requirements mature, such as the resolution of copyright issues between digital data file suppliers and copyright holders, the purchase of digital data files. It is expected that the route will develop into vending machines or encoders and be applied to more diverse forms. In such a situation, it is considered that uploading from a digital data player to a device such as a personal computer terminal should be allowed, at least in a limited manner.

【0005】

[Problems to be Solved by the Invention]

However, in the conventional technology, when an attempt is made to upload a digital data file from a digital data player to a personal computer terminal, a technique has been developed in which the purchaser of the file is confirmed and the uploading is permitted in a limited manner. Therefore, it has been a factor that hinders the spread of digital data players.

【0006】

The present invention has been made in view of such conventional problems, and prevents unauthorized duplication of a digital audio data file such as an MP3 file or a digital data file such as a digital video data file such as JPEG. It is an object of the present invention to provide a recording medium on which a method for the purpose and a copy protection program thereof are recorded.

【0007】

[Means for solving problems]

In order to achieve such an object, the present invention reads the identification code of the digital data file to be uploaded, and when it is found that the file is downloaded for a fee, the present invention uploads the file only a specific number of times. It is characterized by providing a copy protection method for a digital data file that allows or disallows upload.

【0008】

Then, the present invention reads the identification code of the digital data file to be uploaded, and when it is found that the file is downloaded for a fee on the network, the upload is allowed or uploaded only a specific number of times. In the method of preventing duplication of a digital data file that disallows the above, when uploading is permitted only a specific number of times, the digital data file is disallowed after a specific number of uploads. It is characterized by providing a method for preventing duplication of a digital data file of a digital data file for which the identification code of the digital data file is changed.

【0009】

Further, the present invention leads the identification code of the digital data file to be uploaded, and when it is found that the file is downloaded for a fee, the upload is permitted only a specific number of times, or the upload is performed. In the method for preventing duplication of a digital data file of a disallowed digital data file, when uploading is disallowed, a method for preventing duplication of the digital data file is provided, which comprises outputting to that effect to an audio or video signal. It is characterized by that.

【0010】

Further, the present invention reads the identification code of the digital data file to be uploaded, and when it is found that the file is downloaded for a fee, the upload is permitted only a specific number of times, or the upload is performed. It is characterized by providing a recording medium on which a copy prevention program for a digital data file that is disallowed is recorded.

【0011】

Furthermore, the present invention reads the identification code of the digital data file to be uploaded, and if it is found to be a file downloaded for a fee, it allows uploading only a specific number of times, or uploads. Digital that changes the identification mode of the digital data file so that no further uploads are permitted after a specific number of uploads have been made on the recording medium on which the copy prevention program for the disallowed digital data file is recorded. It is characterized by providing a recording medium on which a data file duplication prevention program is recorded.

【0012】

Then, the present invention reads the identification code of the digital data file to be uploaded, and when it is found that the file is downloaded for a fee, the upload is allowed only a specific number of times, or the upload is performed. If uploading is prohibited on a recording medium that records a copy prevention program for a digital data file that is not permitted, a recording medium that records a copy prevention program for a digital data file that outputs a message to that effect to an audio or video signal is provided. It is characterized by doing.

【0013】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a flow of a digital data file in a digital data player system to which the digital data file duplication prevention method according to the present invention is applied.

【0014】

That is, in the system to which the digital data file duplication prevention method according to the present invention is applied, as shown in FIG. 1, the personal computer terminal 1 is connected to a communication network such as the Internet and is charged or free of charge. When the supplied digital data file is downloaded and stored in the internal hard disk for playback output, or downloaded to the digital data player 2 and the digital data player 2 requests uploading of the digital data file, the digital data Check the identification code given to the header (see Fig. 2) and allow uploading in a limited manner. The digital data player 2 stores the digital data file downloaded from the personal computer terminal 1 in the digital data storage medium 3 and then reproduces and outputs it, or from the digital data vending machine 4 described later or the encoder 5 described later. The output digital data file is played back and output, or uploaded to the personal computer terminal 1. The digital data storage medium 3 is attached in a detachable state and stores the digital data file. The digital data vending machine 4 is connected to a communication network such as the Internet, is installed around a road or in a public place with many people, and sells digital data files for a fee. The encoder 5 downloads a digital data file supplied via a specific transmission path and supplies the digital data file to the digital data player 2.

【0015】

Hereinafter, each embodiment of the digital data file duplication prevention method applied to the system configured in this way will be described with reference to FIG. 2 (A) to 2 (D) are drawings showing each identification code assigned to the header of the digital data file. First, as the first embodiment, when the user purchases a paid digital data file from the digital data server, the user registers personal information on the digital data file supplier side and obtains an identification number (ID) and a password. Upon receiving the grant, the digital data file in the form of software is downloaded via the communication network, and the digital data software player is constructed on the personal computer terminal 1.

【0016】

Then, when the user purchases a digital data file from the digital data server via the personal computer terminal 1 and the communication network, that is, tries to download the digital data file, after paying the corresponding fee, the user identifies himself / herself through the communication network. Transmit the number and password. The digital data server confirms the identity of the user based on the transmitted identification number and password, and then transmits the digital data file requested by the user. At this time, the uploading of the digital data file is performed in any case. The identification code "01" is added to the header of the transmission file and transmitted so that

【0017】

Next, the user stores the digital data file transmitted from the digital data server in the hard disk of the personal computer terminal 1, and reproduces and outputs the digital data file using a digital data software player as needed. As a result, the user can freely listen to the desired music through the personal computer terminal 1.

【0018】

On the other hand, when the digital data file purchased through the above-mentioned route is to be viewed by using the portable digital data player 2, the personal computer terminal 1 displays the digital data file on the digital data player 2 side. Download. At this time, the digital data player 2 stores the digital data file to be downloaded in the digital data storage medium 3 produced in the form of a detachable memory card, reads it if necessary, and reproduces it via the internal decoder. Output.

【0019】

Therefore, the user can use the digital data player 2 to listen to music in the form of a digital data file at a desired location. However, another personal computer terminal is used to load the paid digital data file purchased through the above-mentioned route into the personal computer terminal 1, or the digital data player 2 is used. When attempting to upload, the personal computer terminal 1 confirms that it is a paid digital data file based on the identification code "01", and disallows loading or uploading.

【0020】

Next, as the second embodiment, in the case of a digital data file distributed free of charge on the communication network, an identification code "00" is added to the header of the digital data file, and the digital data file is used as the digital data player 2 When trying to upload to the personal computer terminal 1 from, the personal computer terminal 1 is allowed to be uploaded after confirming that it is a digital data file distributed free of charge based on the identification code "00". Therefore, as described above, the user can freely view the data by using the digital data software player of the personal computer terminal 1 or by using the digital data player 2.

【0021】

Further, as a third embodiment, when a digital data file is purchased from a digital data vending machine 4 installed around a road in the city or in a public place with a lot of traffic for a predetermined amount of money, the digital data file is purchased. An identification code "10" is added to the header of the data file, and when the digital data file purchased in this way is to be uploaded to the personal computer terminal 1 using the digital data player 2, the personal computer terminal 1 is used. After confirming that the computer terminal 1 is a digital data file sold by the digital data vending machine 4 based on the identification code 10, the computer terminal 1 allows uploading only once. Then, after the uploading is performed, the identification code is changed from "10" to "01" to disallow further uploading. Therefore, the user can upload and use the digital data file purchased from the digital data vending machine 4 to the personal computer terminal 1 side only once.

【0022】

Further, as the fourth embodiment, the user downloads the digital data file to which the identification code "11" is added by using the encoder 5 purchased by concluding a predetermined contract with the supplier of the digital data file, and the above-mentioned When attempting to upload to the personal computer terminal 1 using the digital data player 2, the digital data file to be uploaded based on the identification code "11" of the personal computer terminal 1 sets the encoder 5. Allow uploading after confirming that the file was purchased through.

【0023】

It is also possible to create and use the above-mentioned digital data file duplication prevention method as one program. In this case, the duplication prevention program is stored inside a recording medium such as a personal computer or an MP3 player. Then, when those devices perform operations related to the duplication of the digital data file, the duplication prevention program is executed, so that unauthorized duplication can be prevented.

【0024】

[Effect of the invention]

As described above, in the recording medium in which the copy prevention method for the digital data file and the copy prevention program according to the present invention are recorded, in order to assign an identification code capable of confirming the purchaser to the digital data file. , In the case of a paid digital data file, when an attempt is made to upload from a digital data player, it is possible to allow the uploading in a limited manner by the given code value, and it is possible to prevent unauthorized duplication of the digital data file. There is an effect.

[Simple explanation of drawings]

[Figure 1]

It is a block diagram which showed the example of the system which applies the duplication prevention method of the digital data file which concerns on this invention.

[Figure 2]

It is a drawing which showed each identification code attached to the header of the digital data file which concerns on this invention.

[Explanation of symbols]

1 ... Personal computer terminal 2 ... Digital data player 3 ... Digital data storage medium 4 ... Digital data vending machine 5 ... encoder