KR20040076651A - Optical recording medium having additional information be capable of reproducing conditionally, authentificating apparatus and method therefor, reproducing apparatus and method therefor - Google Patents

Abstract

PURPOSE: An optical recording medium having additional information capable of being conditionally reproducible, an authentication device and a method therefor, and reproduction device and method therefor are provided to supply a function of reproducing an entire disk or partially reproducing a portion of the disk or prohibiting the reproduction of the entire disk according to a user's right, thereby widening a selection of the user or a disk distributor. CONSTITUTION: A user(410) inputs a user ID to a disk reproduction device(420) to access an authentication unit(430). A disk(421) where reproduction right information is stored is mounted on the disk reproduction device(420). The disk reproduction device(420) reads the reproduction right information of the user(410) within the disk(421), and informs the authentication unit(430) of a right of the user(410) or a disk distributor through a network terminal device(440). A party who receives an authentication right for the right of the user(410) or the disk distributor decodes the reproduction right information with an authentication key, confirms the user ID, and determines a reproduction right. The disk reproduction device(420) is informed of the determined reproduction right. The disk reproduction device(420) performs a selective disk reproduction according to the reproduction right.

Description

Optical recording medium having additional information be capable of reproducing conditionally, authentificating apparatus and method therefor, reproducing apparatus and method therefor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of optical recording media capable of conditional reproduction, and more particularly to an optical recording medium, an authentication apparatus and method, a reproduction apparatus, and a method having additional information capable of conditional reproduction.

As an example of an optical recording medium, a DVD (Digital Versatile Disc), which is widely used today, can be reproduced according to data encryption information or a region for prohibiting illegal copying of contents or protecting contents. / Regional code for determining prohibition is included as additional information in addition to user data. Once successful authentication, all areas of the disc can be accessed and played.

However, the conventional optical recording medium could not be processed when the user had a right to reproduce only a portion. For example, in the case of an audio disc, there was no action on how the user could listen to only some of the contents of the disc in the record and pay for the desired song over the Internet in the future. Therefore, the high-priced royalties are paid for the whole grains, and thus the price of buyers is lowered due to the increase in the disk price.

Accordingly, an object of the present invention is to additionally record additional information for conditional reproduction in addition to user data information, and according to the user's usage rights, an optical recording medium capable of prohibiting reproduction, allowing partial region reproduction, and allowing full region reproduction, reproduction for this An apparatus and method for authenticating authority are provided.

Another object of the present invention is to provide an apparatus and method for recording conditional reproduction information on a large capacity optical recording medium, and receiving only user rights information according to conditional reproduction from a user and reproducing only a song / video title satisfying a condition.

1 shows a schematic data layout of a disc.

2 is an example of reproduction authority information according to a user authority according to the present invention;

3 is an example of additional information for conditional reproduction according to a reproduction right according to the present invention;

4 is a block diagram according to an embodiment of an authentication apparatus for playing a disc according to a user right according to the present invention;

5 is a block diagram according to another embodiment of an authentication apparatus for playing a disc according to a user right according to the present invention;

6 is a block diagram according to an embodiment of a playback apparatus for performing conditional playback according to the present invention;

7 is a flowchart according to an embodiment of a conditional playback method according to the present invention.

The above object according to the present invention is an optical recording medium having a user data area and an additional information area: characterized in that reproduction right information is stored in said additional information area so as to selectively specify a reproduction right of said optical recording medium. It is achieved by an optical recording medium.

The above object is also provided in an optical recording medium having a user data area and an additional information area in predetermined block units: an optical recording medium having a user data area and an additional information area in predetermined block units:

Depending on the user's usage rights, the entire area of the optical recording medium may be played back, some areas may be played back, or, if there is no usage right, data related to the reproduction authority information may be stored in the additional information area to prohibit playback of the entire area. It is achieved by an optical recording medium characterized by storing.

According to another field of the present invention, the above object corresponds to an optical recording medium distributor or a party authorized to authenticate user authority, and decrypts the reproduction authority information together with user identification information (ID) and reproduction authority information. Authentication means for storing the decryption key, the encryption key encrypting the user key; And an optical recording medium storing data relating to reproduction authority information of the optical recording medium, outputting a user ID input from the user and the reproduction authority information to the authentication means, and authenticated reproduction authority transmitted from the authentication means. This is achieved by an authentication apparatus including a player for selectively reproducing the optical recording medium according to the information.

In addition, the above object corresponds to an optical recording medium distributor or a party authorized to authenticate the user authority, the authentication means for decrypting the user identification information from the user and providing the user authority information to the user; And a player for reproducing the optical recording medium appropriately for the conditional reproduction condition if the decrypted user authority information inputted by the user and the reproduction authority information stored in the optical recording medium coincide.

According to another aspect of the present invention, the above object is a method for authenticating a reproduction authority of a user for selectively reproducing an optical recording medium in an optical recording medium reproducing apparatus, comprising: an optical recording medium distributor or user authority by a user Inputting user identification information (ID) to notify a party authorized to authenticate to an authentication means capable of authenticating the optical recording medium use authority; Informing the authentication means of the reproduction authority information and the user ID of the optical recording medium by the optical recording medium reproducing apparatus; Decoding reproduction authority information of the optical recording medium according to the user ID and determining reproduction authority by the authentication means; And reproducing the optical recording medium in accordance with the reproduction authority determined in the optical recording medium reproducing apparatus.

In addition, the above object is a method for authenticating a reproduction authority of a user for selectively playing an optical recording medium in an optical recording medium reproducing apparatus, wherein the user is authorized to authenticate to the optical recording medium distributor or the user authority. Accessing an authentication means capable of authenticating the optical recording medium use authority to the party, and inputting a user ID to obtain a user key; An optical recording medium reproducing apparatus equipped with an optical recording medium includes: decrypting the user key with a decryption key recorded on the optical recording medium to extract a user number range; And reproducing the corresponding area if the user number range belongs to the reproduction authority number range of the optical recording medium.

According to another aspect of the present invention, the above object is a buffer for reading and storing audio and / or video (AV) data in units of blocks from an optical recording medium; A conditional reproduction authority analyzer for interpreting input user authority information and reproduction authority information stored in units of blocks; And an AV decoder for selectively reproducing the data stored in the buffer in accordance with the conditional reproduction authority interpreted by the conditional reproduction authority analyzer.

According to still another aspect of the present invention, the above object is a method for reproducing data on an optical recording medium, comprising: whether the optical recording medium block includes conditional reproduction information in the reproduction authority information stored on the optical recording medium; Confirming; And analyzing the reproduction authority detailed information and performing conditional reproduction if the conditional reproduction information is interpretable.

Also, the above object is a method for reproducing data on an optical recording medium, comprising the steps of: reading data in units of blocks on the optical recording medium and writing the data into a buffer; Judging whether the input user right information and the play right detail information match when the play right indication information indicates conditional play; And selectively reproducing the data stored in the buffer if the determination result matches.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a diagram illustrating a schematic data layout of a disc, which typically includes a user data information area, copy protection related information, a disc manufacturer, a contents provider, and a contents right. An additional information area for various additional information such as is included. The user data information area is normally in ECC (Error Correction Code) block units, and an additional information area for the block is allocated.

According to the present invention, the entire disc may be played according to a user's usage rights, a portion may be played only by giving a right to a partial area, and if there is no use right, a play may be prohibited over the whole area of the disc. In order to do so, the disc distributor or the party authorized to authenticate the user authority, not the disc reproduction apparatus, authenticates the reproduction authority, and the disc reproduction apparatus executes the reproduction according to the authenticated reproduction authority. In this way, it is possible to define the reproduction authority information as shown in FIG. 2 as a method for performing the reproduction according to the reproduction authority. The play right information may include play right indication information and play right detail information. If the play right indication information is "0", it means that anyone can play. If the play right indication information is "1", the play right indication information satisfies the play right detail information. If it indicates to play.

The reproduction authority detailed information illustrated in FIG. 2 may include reproduction authority condition information as shown in Table 1 below as an example of conditional reproduction information.

Content of the playback permission details meaning 00 Can't play 01 Partial playable 10 Play all areas 11 Reserved 0x00000000 (number) Start of privilege scope 0x000000000 (number) Permission End

As shown in Table 1 above, the user authority information may be determined to belong to a number range so that only partial reproduction of the entire area may be processed. Here, the partial playability means that a portion of the disc area cannot be read or a play that restricts playback, which means that the screen or audio cannot be played completely even if the actual data is read, and that the process is not performed or the screen is paused or the audio output is prohibited. Can be used as a meaning.

In addition, the reproduction authority detailed information may further include authenticator information and authenticator key information. The authenticator information is information about who the authenticator is authorized to the user. The authenticator key information may be decryption key information for decrypting user key information input by a user.

If the user's playback rights are promised with the contents and meaning of the playback rights information as shown in Table 1 above, the disc playback apparatus includes the contents of Table 1 for conditional playback according to the playback rights recorded on the additional information area of the disc. Playback is possible according to additional information as shown in FIG.

That is, the reproduction authority information (including the reproduction authority number range) and the next address information to be reproduced are stored in the additional information area of the disc as shown in FIG. 3A, and accessed and reproduced at an address indicated according to the reproduction authority. It is also preferable to add the address currently reproduced to the additional information. This helps to determine the relative position by referring to the address to be reproduced now and the address to be reproduced next. It is also preferable to divide the next address to be reproduced into two parts to divide the next address to be reproduced when partial reproduction is allowed and the next address to be reproduced when full region reproduction is allowed. This is because the next address to be reproduced can be selectively used according to the reproduction authority.

As shown in (b) of FIG. 3 during partial playback, adding a second next address in case an error occurs in the next address (first next address) and thus cannot be accessed may help increase system stability. .

4 is a block diagram according to an embodiment of an authentication apparatus for playing a disc according to a user's authority according to the present invention.

In Fig. 4, data related to the reproduction authority information as shown in Fig. 3A or 3B is stored in the additional information area in the disc 421 in units of blocks. The disc 421 also stores decryption key data for analyzing the user key. The disk distributor sells or distributes the disk along with the user identification information (ID) to the user 410. The authentication means 430 for authenticating the disc use authority by the disc distributor or a party authorized to authenticate the user authority includes the user ID and the reproduction authority information (nonplayable, partially playable, and all playable). Stores a decryption key that can decrypt playback rights information and an encryption key that encrypts the user key.

By using the above means, the disc playback authority of the user is authenticated by the following procedure.

The user 410 inputs the user ID to the disc reproducing apparatus 420 to access the authentication means 430 which can authenticate the disc use authority to the disc distributor or a party authorized to authenticate the user authority. The disc reproducing apparatus 420 mounts the disc 421 storing the reproduction authority information.

The disc reproducing apparatus 420 reads disc reproducing authority information of the user in the disc 421 and authenticates means 430 which is a party authorized to authenticate with respect to the disc distributor or the user authority through the network terminal apparatus 440. Notify The disc distributor or the party authorized to authenticate the user authority decrypts the playback authority information with the authentication key, checks the user ID, and determines the playback authority. The determined playback right is notified to the disc playback device 420. The disc reproducing apparatus 420 performs selective disc reproducing according to the reproducing authority (not reproducible, partial reproducible, or full reproducible).

5 is a block diagram according to another embodiment of an authentication apparatus for playing a disc according to a user's authority according to the present invention.

In Fig. 5, the user 510 enters a user ID by accessing an authentication means 520 capable of authenticating the disc use authority to the disc distributor or a party authorized to authenticate the user authority. The user 510 obtains a user key including authenticator information, user numeric information, and user ID through the authentication means 520. The user key may be referred to as user authority information and user index information. This acquisition process is performed by a separate network terminal device 540 or disc playback device 530 by the corresponding terminal device.

The user 510 mounts the disc 531 on the disc reproducing apparatus 530 together with the user key obtained from the authentication means 520. The disc reproducing apparatus 530 interprets the user key to extract information on the reproduction authority, reads the disc reproduction authority information of the user in the disc 531, and if the read reproduction authority information matches the extracted reproduction authority information, Perform selective disc playback. That is, the disc reproducing apparatus 530 decodes the user key with the decryption key recorded on the disc 531 and extracts user number information and authenticator information. If the authenticator information on the disc and the extracted authenticator information match, the user number information, which is conditional reproduction authority information, belongs to the reproduction authority number range of the disc, and the corresponding area is played. Here, the range of numbers can be used as a value of various ranges. For example, time value.

6 is a block diagram according to an embodiment of a playback apparatus for performing conditional playback according to the present invention. The playback apparatus 610 equipped with the disc 600 includes a buffer 611, a conditional playback authority analyzer 612, An AV decoder 613 is used to output the reproduced signal to the output device 620.

In Fig. 6, the buffer 611 writes data read out from the disc 600 in units of blocks. The conditional reproduction authority analyzer 612 reads the reproduction authority information of the corresponding block, decodes the input user authority information, determines whether the read reproduction authority information and the decrypted user authority information match, and determines whether the determination result is partial region reproduction. , The data stored in the buffer 611 is provided to the AV decoder 613 in accordance with whether full area reproduction or full area reproduction is prohibited. Here, the user authority information may be reproduction authority information notified from the authentication means 430 as shown in FIG. 4, or may be user key information obtained by the user 510 as shown in FIG. 5. The AV decoder 613 decodes the AV data output through the conditional reproduction analyzer 612 and outputs it to an output device 620 such as a television or a speaker.

FIG. 7 is a flowchart of a conditional reproduction method according to an exemplary embodiment of the present invention, which will be described with reference to the reproduction apparatus shown in FIG. 6.

In Fig. 7, data of one block on the disc 600 is read out and written to the buffer 611 (step 701). The reproduction authority indication information is detected in the read block (step 702). If the reproduction authority indication information detected in step 702 is "0", the data stored in the buffer 611 is interpreted by the AV decoder 613 and output to the output device 620 (step 703).

If the reproduction authority indication information detected in step 702 is "1", it is determined whether the input user authority information and the reproduction authority detailed information match (step 704). Data stored in the buffer 611 is interpreted by the AV decoder 613 and output to the output device 620 (step 705). If the data does not match, a conditional unplayable error is generated and error processing is performed (step 706). ).

As described above, the present invention may play the entire disc according to a user's usage rights, may play a part by giving a right to only a part of the area, or, if there is no use right, play the whole disc. It provides the ability to choose from a wide variety of disc distributors and users. In addition, the disk distributor selects the number of users, and if the number is within the range, the disk distributor controls the disk area according to the authority, thereby granting the authority to use the disk for each user.

Claims (30)

In an optical recording medium having a user data area and an additional information area: And reproduction authority information is stored in the additional information area so that reproduction authority of the optical recording medium can be selectively designated. The optical recording medium according to claim 1, wherein the reproduction authority information includes information indicating that all regions can be reproduced, only some regions can be reproduced, or not all regions can be reproduced. The optical recording medium according to claim 1, wherein the reproduction authority information is stored as constant data promised to be deciphered by the optical recording medium reproducing apparatus. The optical recording medium of claim 3, wherein the reproduction authority information is stored in units of predetermined blocks. The optical recording medium according to claim 4, wherein the content of the reproduction authority information includes instruction information for indicating that the block includes conditional reproduction information. 6. The optical apparatus according to claim 5, wherein the reproduction authority information further includes reproduction authority detailed information including all region playable, partial region playable, all region playable, authority range start and authority range end information. Recording media. 7. The optical recording medium according to claim 6, wherein the reproduction authority detailed information further includes authenticator information. 7. The optical recording medium of claim 6, wherein the reproduction authority detailed information further includes an authenticator key information. An optical recording medium having a user data area and an additional information area in predetermined block units: Depending on the user's usage rights, the entire area of the optical recording medium may be played back, some areas may be played back, or, if there is no usage right, data related to the reproduction authority information may be stored in the additional information area to prohibit playback of the entire area. And an optical recording medium. 10. The apparatus according to claim 9, wherein the additional information area selectively specifies a reproduction authority of the optical recording medium and reproduces the optical recording medium according to the designated authority, numerical range information for limiting the user, and next address information to be reproduced. And an optical recording medium. 11. The optical recording medium according to claim 10, wherein an address to be reproduced currently is further stored in the additional information area and used to determine a relative position with reference to the address to be reproduced and the address to be reproduced next. 12. The optical recording medium according to claim 11, wherein the next address to be reproduced is divided into a next address to be reproduced when partial reproduction is allowed and a next address to be reproduced when full region reproduction is allowed, so that the next address to be reproduced can be selectively used according to the reproduction authority. . 13. The optical recording medium according to claim 12, further comprising: storing a second next address in case an error occurs in a next address to be reproduced when the partial reproduction is allowed and access is not possible. An optical record carrier or a party authorized to authenticate user rights, a decryption key capable of decrypting the play right information along with user identification (ID), play right information, and a password that encrypts the user key. Authentication means for storing the key; And Equipped with an optical recording medium for storing data related to reproduction authority information of the optical recording medium, outputting a user ID and the reproduction authority information input from a user to the authentication means, and authenticated reproduction authority information transmitted from the authentication means. And a player for selectively reproducing the optical recording medium. 15. The authentication apparatus according to claim 14, wherein the player reproduces the optical recording medium so as to reproduce the whole region, reproduce only a partial region, or prohibit the reproduction of the entire region according to the authenticated reproduction authority information. The authentication apparatus according to claim 14, wherein the authentication means and the player are connected through a network terminal device. An authentication means corresponding to an optical recording medium distributor or a party authorized to authenticate the user authority, the authentication means for decrypting the user identification information from the user and providing the user authority information to the user; And And a player for reproducing the optical recording medium appropriately for the conditional reproduction condition if the decrypted user authority information input by the user and the reproduction authority information stored in the optical recording medium match. 18. The apparatus according to claim 17, wherein if the authenticator information in the user authority information and the authenticator information stored in the optical recording medium match, the authenticated and extracted numerical range in the user authority information is in the numerical range in the reproduction authority information of the optical recording medium. And an optical recording medium to reproduce the optical recording medium. 18. The authentication apparatus according to claim 17, further comprising a terminal device for connecting the user and the authentication means. A method for authenticating a reproduction authority of a user for selectively reproducing an optical recording medium in an optical recording medium reproducing apparatus, the method comprising: Inputting user identification information (ID) to notify an authentication means capable of authenticating the optical recording medium use authority to an optical recording medium distributor or a party authorized to authenticate the user authority by the user; Informing the authentication means of the reproduction authority information and the user ID of the optical recording medium by the optical recording medium reproducing apparatus; Decoding reproduction authority information of the optical recording medium according to the user ID and determining reproduction authority by the authentication means; And And reproducing the optical recording medium in accordance with the reproduction authority determined in the optical recording medium reproducing apparatus. 21. The authentication method according to claim 20, wherein in the reproducing step, the entire area can be reproduced, only a partial area can be reproduced, or the entire area is reproduced according to the determined reproduction authority. A method for authenticating a reproduction authority of a user for selectively reproducing an optical recording medium in an optical recording medium reproducing apparatus, the method comprising: Obtaining a user key by inputting a user ID by accessing an authentication means capable of authenticating the optical recording medium use authority to an optical recording medium distributor or a party authorized to authenticate the user authority; An optical recording medium reproducing apparatus equipped with an optical recording medium includes: decrypting the user key with a decryption key recorded on the optical recording medium to extract a user number range; And And reproducing the corresponding area if the user number range belongs to the reproduction authority number range of the optical recording medium. 23. The method of claim 22, wherein the range of numbers can be used as various ranges of values. A buffer for reading and storing audio and / or video (AV) data from the optical recording medium in units of blocks; A conditional reproduction authority analyzer for interpreting input user authority information and reproduction authority information stored in units of blocks; And And an AV decoder for selectively reproducing data stored in the buffer according to the conditional reproduction authority interpreted by the conditional reproduction authority analyzer. 25. The reproduction apparatus according to claim 24, wherein the AV decoder can reproduce the whole region, reproduce only a partial region, or prohibit the reproduction of the entire region according to the conditional reproduction authority. In the method of reproducing data on an optical recording medium: Checking whether the block data of the optical recording medium includes conditional reproduction information in the reproduction authority information stored on the optical recording medium; And And analyzing the reproduction authority detailed information if the conditional reproduction information is interpretable to execute conditional reproduction. 27. The method of claim 26, wherein the method If it is impossible to interpret, generating a conditional unplayable error and handling the error. In the method of reproducing data on an optical recording medium: Reading block data on the optical recording medium and writing the data into a buffer; Judging whether the input user right information and the play right detail information match when the play right indication information indicates conditional play; And And selectively regenerating data stored in the buffer when the determination result is matched. The method of claim 28, wherein the method is If the determination result does not match, generating a conditional non-reproducible error and processing the error. The method of claim 28, wherein the method is And reproducing the data stored in the buffer if detecting the reproduction right indication information in the read block and indicating that the detected reproduction right indication information can be reproduced by anyone.