KR100611965B1 - Recording medium for storing encrypted audio data, apparatus and method of recording the same and appraratus and method of reproducing the same - Google Patents

Abstract

Disclosed is a recording medium for storing encrypted audio data, a recording apparatus and method thereof, and a reproduction apparatus and method thereof. The present invention records encrypted audio and unencrypted audio data, respectively, for compatibility with existing standards in which only video is recorded in encrypted form for copy protection, and the combination of video data and these two types of audio data, respectively. (Video + Encrypted Audio, Video + Unencrypted Audio), while only audio data can be played back. At this time, one audio data to be recorded has a level of sound quality that can be allowed to be duplicated, and the other audio data proposed by the present invention is encrypted and recorded to prevent illegal copying, and has higher quality than unencrypted audio data. In addition, not only can playback be performed in a playback apparatus conforming to the existing standard, but also the playback apparatus proposed by the present invention has the advantage that copyright can be protected while higher quality audio can be played back.

Description

Recording medium for storing encrypted audio data, apparatus and method of recording the same and appraratus and method of reproducing the same}

1 is a view showing a data structure on a recording medium conforming to the existing DVD-Video and DVD-Audio standards.

2 is a diagram showing a data structure of a recording medium on which encrypted audio data according to the present invention is recorded while maintaining compatibility with existing DVD-Video and DVD-Audio standards.

3 is a diagram showing the structure of identification information according to the DVD-Video standard capable of identifying encrypted audio data according to the present invention.

4 is a diagram showing the structure of identification information according to the DVD-Audio standard for identifying encrypted audio data according to the present invention.

5 is a block diagram according to an embodiment of a recording apparatus for recording encrypted audio data according to the present invention.

6 is a block diagram according to an embodiment of a reproducing apparatus for reproducing encrypted audio data according to the present invention.                 

7 is a block diagram according to another embodiment of a reproduction device for reproducing encrypted audio data according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of recording / reproducing audio and video information on a digital recording medium, and more particularly, to a recording medium for storing encrypted audio data for preventing illegal copying, a recording device and method thereof, and a reproduction device and method thereof. It is about.

An example of a digital recording medium for recording digital video and / or audio information is a DVD (Digital Versatile Disc). A standard for recording video or audio information on a DVD is DVD-Video (DVD Specification for Read-only). disc (Part 3. Vedeo Specifications), and DVD-Audio (DVD Specification for Read-only disc (Part 4. Audio Specifications)).

By recording digitized video and audio information on the disc according to this standard, not only high quality and high quality information can be recorded, but also because of the characteristics of the digitized information, the sound quality or image quality does not deteriorate due to the advantage that the disc is illegal. There is a need for means for cloning.

One of the methods of piracy is to encrypt the information itself, which is encrypted only in the most important part of the information or the whole information, so even if it is illegally copied, it is not easy to use. It is more widely used than the method of recording the data with data.

However, in the DVD-Video recording / reproducing apparatus and the DVD-Audio recording / reproducing apparatus, encryption for illegal copying is performed in a separate method, respectively.

On the other hand, if the DVD-Auido standard alone cannot record video information, such as music video information that records video and music together, the video information and music information are produced by the DVD-Vidoe standard. In addition, the playback information for reproducing the moving picture information and the music information can be recorded in the DVD-Video area and the DVD-Audio area, respectively, so that the DVD-Audio reproducing apparatus can play back.

Since the DVD-Video standard is centered on video and audio is defined in terms of additional information of video, an encryption method is applied only to video information and no encryption method is applied to audio information. This may be a means for increasing the decoding speed of the decoder, but has a problem that it cannot be applied when audio information such as music video information has a higher value to be protected. In addition, if the audio information is encrypted without conforming to the existing DVD-Video standard, there is a problem in that the existing DVD-Video player cannot be played back.

1 is a data structure on a DVD-ROM disc according to the existing DVD-Video and DVD-Audio standards, and is a diagram for explaining encryption of existing video information and audio information. In the DVD-Video area of a DVD-ROM disc, video information (1) that can be copy protected by encryption, unencrypted audio information (2), and management information for playing these information are recorded. In the DVD-Audio area of the ROM disc, audio information (3) which can be encrypted and protected against copying by an encryption method different from the video information, management information for reproduction of the audio information (3), and DVD-Video area are provided. Management information capable of reproducing the recorded video information 1 and audio information 2 and / or management information capable of reproducing only the audio information 2 recorded in the DVD-Video area is recorded.

On the other hand, the DVD-Audio standard does not define a method or standard for recording moving picture information in the DVD-Audio area. In addition, the DVD-Video standard does not propose an encryption method for encrypting audio information recorded with video information. However, in the DVD-Video standard, only video information is defined to be encrypted.

However, if the main information is audio information such as music video, and the video information is information added to the audio information, the audio information cannot be encrypted in the DVD-Video standard even though the information that is highly valuable is audio information. A problem arises.

In the DVD-Audio standard, moving picture information cannot be recorded in the DVD-Audio area. However, only management information for reproducing information recorded in the DVD-Video area is recorded in the DVD-Audio area. Therefore, the existing DVD-Audio standard and the DVD-Video standard cannot provide a recording medium having a desired illegal copy protection means.                         

In addition, a playback device that is designed to play only DVD-Video information produced by the existing DVD-Video standard cannot play audio information recorded and encrypted with a predetermined encryption method together with the video information because it is not compatible with the existing DVD-Video standard. There was a problem that can not.

In order to solve the above problems, it is an object of the present invention to provide a recording medium in which encrypted audio data is recorded together with moving image data.

Another object of the present invention is to provide a recording medium in which encrypted audio data and unencrypted audio data are recorded together with moving image data while being compatible with existing standards such as the DVD-Video and DVD-Audio standards.

It is still another object of the present invention to provide a recording apparatus for recording the encrypted data together with the moving image data by encrypting the audio data.

It is another object of the present invention to provide a recording apparatus which records encrypted audio data and unencrypted audio data together with moving image data while having compatibility with existing standards.

It is still another object of the present invention to provide a reproduction apparatus for reproducing encrypted audio data from a recording medium in which audio data is encrypted and recorded together with moving image data.

Still another object of the present invention is to provide a recording method of encrypting audio data to record encrypted data together with moving image data.                         

Another object of the present invention is to provide a recording method for recording encrypted audio data and unencrypted audio data together with moving image data while having compatibility with existing standards.

It is another object of the present invention to provide a reproduction method for reproducing encrypted audio data from a recording medium in which audio data is encrypted and recorded together with moving image data.

In order to achieve the above objects, the recording medium according to the present invention has a video area capable of recording moving picture data and unencrypted first audio data, and an audio area capable of recording audio data and corresponding additional information. A recording medium comprising: a video area in which encrypted second audio data is recorded, and a predetermined area in which video management data and / or reproduction management information capable of reproducing encrypted second audio data are stored.

The recording apparatus according to the present invention records a first encryptor that encrypts input video data, a second encryptor that encrypts input audio data, and records the encrypted audio data and video data in a video area of a recording medium in a predetermined format. And a recording processor for recording reproduction management information capable of playing encrypted audio data and / or video data in a predetermined area of the recording medium.

A playback apparatus according to the present invention is divided into a video area and an audio area, and includes a recording medium having video data and audio data in a video area, and playback management information capable of playing video data and / or audio data in a predetermined area. A reproduction apparatus for reproducing: A reproduction processor for analyzing whether or not an audio data and / or video data recorded on a recording medium is encrypted from a reproduction management information read out from a recording medium, and an encryption method; a reproduction processor for reproducing a moving image data read from the recording medium. And a second decryptor for decrypting according to the encryption method and the encryption method outputted from the recording medium, and a second decoder for decrypting the audio data read out from the recording medium according to the encryption method and the encryption method outputted from the playback processor.

A recording method according to the present invention is a method for recording data on a medium having a video area capable of recording moving image data and an audio area capable of recording audio data and additional information therein, the method comprising: input video data and And / or encrypting the audio data to record the encrypted video data and / or the encrypted audio data in the video area and recording the reproduction management information to reproduce the encrypted video data and / or the encrypted audio data in the predetermined area. It characterized in that it comprises a step.

A reproduction method according to the present invention is divided into a video area and an audio area, and a recording medium having moving picture data and audio data in a video area, and a reproduction management information capable of reproducing moving picture data and / or audio data in a predetermined area. A reproduction method for reproducing: analyzing whether or not an encryption method and an encryption method of audio data recorded on a recording medium from reproduction management information read out from a recording medium and decrypting audio data read out from the recording medium according to an encryption method and an encryption method And decoding the same.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of a recording medium, a recording apparatus and method thereof, and a reproduction apparatus and method thereof for storing encrypted audio data according to the present invention.

2 is a diagram showing the structure of data on a disc on which encrypted audio data is recorded according to the present invention while having compatibility with existing DVD-Video and DVD-Audio standards. An example of a disk used in the present invention relates to a DVD-ROM having a capacity of 4.7 GB (Giga Bytes) for recording video and audio information according to the DVD-Video standard and audio information according to the DVD-Audio standard.

In the DVD-Video area of the disc according to the present invention, unencrypted audio data (referred to as first audio data: 12) together with encrypted video data 11 are recorded by multiplexing the DVD-Video standard. Playback information for reproducing the recording is recorded as management information in the DVD-Video area. In addition, the video data 11, the first audio data 12, and the encrypted audio data (referred to as second audio data: 13) are multiplexed and recorded. However, management information for the second audio data 13 is recorded so that it cannot be reproduced by the existing DVD-Video reproducing apparatus.

That is, the reproduction management information of the video and the first audio, the reproduction management information of the first audio, the reproduction management information of the video and the second audio, and the reproduction management information of the second audio can be recorded in the DVD-Audio area. Here, the reproduction management information of the video and the first audio and the reproduction management information of the video and the second audio may be stored in an AVTT (Audio with Video Title: 14), and the first audio single reproduction management information and the second audio single reproduction may be stored. The management information may be stored in AOTT (Audio Only Title: 15). Further, in the DVD-Audio area, reproduction management information for reproducing the audio data 18 and 19 encrypted by the DVD-Audio standard may be recorded in the AOTTs 16 and 17.

A playback device having only an audio decoder can play only audio data among music video information. For this purpose, the music video disc has a separate information structure for audio alone playback, separate from the information structure for video and audio playback. Can be. Using this information structure, the audio single player can access audio data only from the music video information and play audio alone.

In the information structure for audio single playback, information about audio data among music video information is recorded. The information about audio data is recorded by using an encryption method if the audio data is encrypted for copy protection, and if so. Information about the presence is included.

As an implementation example, in the case of a DVD music video disc recording a music video on a DVD, a video object (VOB) for a music video is recorded in the DVD-Video area, and video data and audio data are recorded in the VOB. In the DVD-Audio area, an audio object (AOB) and AOTT and AVTT, which are information structures for reproduction, are recorded. Audio data is recorded in the AOB, AOTT is an information structure for audio alone reproduction, and AVTT is an information structure for reproduction of both video and audio.                     

2, the AOTTs 16 and 17 having their own AOBs in the DVD-Audio area are an information structure for reproducing the associated AOBs. The AOTT 14 and AVTT 15, which do not have their own AOB and have only playback information, are information structures for reproducing VOB data in the DVD-Video area. In the case of playback using the AVTT 15, both video and audio data of the VOB data in the DVD-Video area are played back. When playing back using the AOTT 14, only audio data of the VOB data in the DVD-Video area is played back.

In the existing VOB in the DVD-Video area, the encryption method for copy protection is applied only to the video data. However, in the present invention for a music video disc, a VOB capable of playing independently by being connected to an AVTT and / or AOTT recorded in the DVD-Audio area is provided. The encryption method is also applied to the audio data inside. Information about whether an encryption scheme is applied and what encryption scheme is applied is recorded in the AOTT connected to the corresponding audio data.

For example, video data recorded in the VOB in the DVD-Video area applies the encryption method specified in the DVD-Video standard, and audio data recorded in the AOB in the DVD-Audio area applies the encryption method specified in the DVD-Auido standard. In this case, the encryption method specified in the DVD-Video standard or the encryption method specified in the DVD-Audio standard is also applied to the audio data in the VOB connected to the AOTT recorded in the DVD-Audio area for single playback. Information about the encryption method is recorded in the AOTT connected to the audio data.                     

However, the existing DVD-Video playback apparatus can only decrypt the encryption of video data, and thus cannot reproduce audio data when the encryption method is applied to the audio data of the VOB. In order to solve this problem, an additional audio data without an encryption method is recorded in the VOB. This unencrypted audio data records the same contents as encrypted audio data in the same VOB, but is recorded with lower sound quality and / or fewer channels than encrypted audio data. For example, if you record and copy data coded at low sampling frequencies, low quantization bits, or low bit rates, existing DVD-Video playback devices use low-quality unencrypted audio and video data. Playback is possible. Of course, since a playback apparatus that supports playback of a DVD music video disc can decode encrypted audio data, it is possible to play back audio data and video data of high sound quality together.

However, when the disc of the data structure shown in Fig. 2 is reproduced by the existing DVD-Video reproducing apparatus, the encrypted audio data on the play list also appears to be in a playable state but is encrypted and thus cannot be reproduced in practice. In order to solve this problem, it is necessary to define encrypted audio data as a non-playable state on a playlist, and in a playback apparatus that can play encrypted audio data, encrypted audio data set to a non-playable state on a playlist is required. It is necessary to define separate identification information in the DVD-Video area as shown in Fig. 3 so that it can be identified and reproduced.                     

3 illustrates a structure of PGCI, which is management information of a DVD-Video region in which identification information according to a DVD-Video standard capable of identifying encrypted audio data according to the present invention is stored.

In the DVD-Video area, there is a management information structure of a program chain (PGC), and management information for recording information on the PGC is program chain information (PGCI). PGCI includes PGC_GI (Program Chain General Information) for recording general information of PGC, and PGC_GI includes PGC_AST_CTLT (PGC Audio Stream Control Table), which is an information structure in which control information (PGC_AST_CTL) for each audio information of PGC is collected. A specific condition including encryption related information is recorded in PGC_AST_CTL corresponding to audio information encrypted and recorded among PGC_AST_CTLs recorded in PGC_AST_CTLT to control reproduction of encrypted audio information.

PGC_AST_CTL includes Decoding Audio stream number, which is an availability flag indicating whether audio information designated by the corresponding PGC_AST_CTL is available in the corresponding PGC, and a stream number of audio information designated by the corresponding PGC_AST_CTL. number) is recorded, and in the PGC_AST_CTL corresponding to the unencrypted recorded audio information, an availability flag indicating whether or not to be played back is available to the PGC, and the stream number of the audio information is assigned to the Decoding Audio stream number. Record and make it playable on an existing DVD-Video player, and specify a flag to indicate whether it can be played on PGC_AST_CTL corresponding to encrypted audio information. In the playback device to satisfy Specifies a Conditional Avalability Flag that can be used to conditionally play. The encryption method related to playback of encrypted audio information in the reserved area of PGC_AST_CLT, which is not used in the existing DVD-Video format, is specified. Record the specific conditions included. Then, the stream number of the encrypted audio information is recorded in the Decoding Audio stream number so that the encrypted audio information is not playable in the existing DVD-Video player, and this specific condition can be recognized and the playback satisfies the specific condition. Only the device allows playback of the encrypted audio information.

4 shows a management information structure of a DdVD-Audio region in which identification information according to the DVD-Audeo standard capable of identifying encrypted audio data according to the present invention is stored.

In the DVD-Audio area, an information structure called AMG that covers the entire DVD-Audio area, ATSI (ATS Information), which is an information structure for each Audio Title Set (ATS), and a copy thereof, ATSI_BUP, are recorded. Then, there is AOB which is data belonging to each ATSI.

As shown in Fig. 4, there is an AOTT 21 composed of only ATSI and ATSI_BUP without AOB, which is an AOTT for audio-only reproduction of music video data recorded in the DVD-Video area. The ATSI includes an information structure that manages the entire ATSI called ATSI_MAT (ATSI Management Table) and ATS_PGCIT (ATS Program Chain Information Table). In this ATSI_MAT information structure, there are eight information structures called audio title video object attributes (AOTT_VOB_ATR). . This information structure is where the attribute information for each of the audio information recorded in the VOB used by the ATS is recorded. Record the information on the encryption method of the encrypted audio information included in the VOB here. Of course, the audio title audio object attribute AOTTT_AOB_ATR in the ATSI_MAT information structure records attribute information of audio information recorded in the AOB of the DVD-Audio area.

The AOTT_VOB_ATR corresponding to the unencrypted audio information is recorded according to the existing DVD-Audio standard, and the AOTT_VOB_ATR corresponding to the encrypted audio information is recorded a specific condition including encryption method information related to the reproduction of the audio information. It is specified that the playback apparatus that satisfies the specific condition can be used.

In FIG. 5, which is a block diagram according to an embodiment of a recording apparatus for recording encrypted audio data according to the present invention, the video input processor 102 is a form in which the video encoder 104 can process an input video signal. Convert to The video encoder 104 encodes the video signal passed through the video input processor 102 to a predetermined format and provides the encoded video data to the video encoder 106. The video encryptor 106 encrypts the encoded video data using an encryption scheme according to a predetermined standard to provide the encrypted video data to the format generator 116.

The audio input processor 108 converts the input audio signal into a form that can be processed by the audio encoder 110, and the audio encoder 110 encodes the audio signal that has passed through the audio input processor 108 according to a predetermined format. The encoded audio data is provided to an audio encryptor 114. The audio encryptor 114 encrypts the encoded audio data by using an encryption scheme according to a predetermined standard to provide the encrypted audio data to the format generator 116.

The format generator 116 forms encrypted audio and video data into data of a predetermined format, and forms an information structure for reproducing the video data and the audio data. The formed data and information structure are recorded on the recording medium 120 through a recording controller 118 having a recording mechanism. Here, the video encryptor 106 and the audio encryptor 114 may be referred to as first and second encryptors. In addition, the format former 116 and the write controller 118 may be referred to as a write processor.

There may further be an audio encoder 112 for unencrypted audio data that is additionally recorded for compatibility with existing video playback devices. The output of this additional audio encoder 112 is input directly to the format generator 116 without applying an audio encryption scheme and is formatted so that it can be played back by existing DVD-Video playback devices that do not correspond to the music video recording structure. do.

In the case where the recording device shown in Fig. 5 is a DVD music video recording device, the format generator 116 forms a DVD-Video area and a DVD-Audio area, and encrypts the data defined in the DVD-Video standard in the VOB of the DVD-Video area. Records video data applying the method and audio data applying the encryption method specified in the DVD-Video standard or the encryption method specified in the DVD-Audio standard. The VOB in the DVD-Video area may also record audio data passing through the audio encoder 112 that does not apply the encryption method specified in the DVD-Video standard or the encryption method specified in the DVD-Audio standard. The recording apparatus shown in FIG. 5 may have another encoder for encoding audio data recorded in the DVD-Audio area shown in FIG. 2 into a predetermined format.

In the DVD-Audio area, information for reproducing the audio data of the VOB in the DVD-Video area is recorded in the AOTT having the structure shown in FIG. 4, and encryption related information of the audio data is recorded in the AOTT. In addition, encryption related information of the encrypted audio data may be recorded in the PGCI having a structure as shown in FIG. 3.

6 is a block diagram of a playback apparatus according to an embodiment of the present invention, which is a structure of a music video playback apparatus capable of playing both video and audio.

The reproduction controller 204 including the reproduction mechanism reads the data recorded on the recording medium 202 and provides the read data to the format analyzer 206. The format interpreter 206 analyzes the read data and checks the position and copy protection status of the video and audio data by using the information structure for playing the interpreted video and audio, and separates the video and audio data, respectively, to separate the video decoder. 208 and audio decoder 214, respectively. The video decoder 208 decrypts the video data provided from the format interpreter 206, and the decrypted video data is decoded at the video decoder 210. The video output processor 212 outputs the video data decoded by the video decoder 210 as a video signal suitable for the output device.                     

The audio decoder 214 decrypts the audio data provided from the format interpreter 206 corresponding to the encryption method applied if the encryption method is applied, and provides the audio decoder 216 without decrypting the audio data if it is not applied. . The audio decoder 216 decodes the audio data output through the audio decoder 214, and the audio output processor 218 outputs the decoded audio data as an audio signal suitable for the output device. Here, video decoder 208 and audio decoder 214 may be referred to as first and second decoders, and playback controller 204 and format interpreter 206 may be referred to as playback processors. The playback apparatus shown in FIG. 6 may further have a separate audio decoder for decoding audio data recorded in the DVD-Audio region.

In the case of a DVD music video playback apparatus capable of playing both video and audio, the format interpreter 206 has an information structure for playing video and audio in the DVD-Audio area and / or the DVD-Video area (Figs. 3 and / or 4). ) To reproduce video and audio data in the VOB of the DVD-Video area according to the analyzed playback information. At this time, if information related to the encryption method of the corresponding audio data is recorded in the reproduction information, the audio decoder 214 is operated accordingly.

7 is a block diagram according to another embodiment of a playback apparatus according to the present invention, which is a structure of a music video playback apparatus for audio alone playback.

The reproduction controller 304 reads the data recorded on the recording medium 302 and provides the read data to the format analyzer 306. The format interpreter 306 interprets the read data, checks the position and copy protection status of the video and audio data by using the information structure for playing the interpreted audio alone, and separates the audio data and provides it to the audio decoder 308. do.

The audio decoder 308 decrypts the audio data provided from the format interpreter 306 according to the encryption method applied if the encryption method is applied, provides the decrypted audio data to the audio decoder 310, and if it is not applied. The audio data is provided to the audio decoder 310 without decoding the audio data. The audio decoder 310 decodes the audio data output through the audio decoder 308, and the audio output processor 312 outputs the decoded audio data as an audio signal suitable for the output device.

In the case of a DVD music video player for single-audio playback, the format analyzer 306 interprets the AOTT (Fig. 4), which is an information structure for single-audio playback in the DVD-Audio area, and determines the DVD-Video area connected to the AOTT. Play audio data in the VOB. At this time, if the encryption method and the related information of the audio data is recorded in the AOTT, the audio decoder 308 is operated accordingly.

As described above, the present invention records encrypted audio data and unencrypted audio data together with video data for compatibility with existing standards, thereby combining video data and these two types of audio data, respectively (video + Encrypted audio, video + unencrypted audio), while only audio data can be played.

In addition, in order to prevent illegal copying, the encrypted audio data has a higher sound quality than the unencrypted audio data, so that not only the reproduction apparatus that conforms to the existing standard can be reproduced, but also the reproduction apparatus proposed by the present invention is better. It has the advantage of being able to reproduce high quality audio while still being copyright protected.

Claims (49)

A recording medium having a video area capable of recording moving picture data and unencrypted first audio data, and an audio area capable of recording audio data and corresponding additional information: A video area in which encrypted second audio data is recorded; And And a predetermined area in which reproduction management information capable of reproducing video data of the video area and / or the encrypted second audio data is stored. The recording medium of claim 1, wherein the second audio data is encrypted by an encryption method used in a DVD-Video standard. The recording medium of claim 1, wherein the second audio data is encrypted by an encryption method used in a DVD-Audio standard. The recording medium of claim 1, wherein the reproduction management information includes encryption related information of the second audio data and is stored in the video area. 5. The recording medium of claim 4, wherein the reproduction management information is stored in a program chain information (PGCI) area of a video area. The recording medium of claim 1, wherein the audio area stores reproduction management information of video data and / or audio data of the video area. 7. The recording medium of claim 6, wherein the reproduction management information includes encryption related information of the second audio data. 8. The recording medium of claim 7, wherein the reproduction management information is stored in an audio title set information management table (ATSI_MAT) of the audio area. In a recording medium having a video area and an audio area separately: A video area in which moving picture data and encrypted audio data are recorded; And And a predetermined area in which reproduction management information capable of playing the moving picture data and / or the encrypted audio data is stored. 10. The recording medium of claim 9, wherein the encrypted audio data is encrypted by an encryption scheme conforming to the DVD-Video standard. 10. The recording medium of claim 9, wherein the encrypted audio data is encrypted by an encryption method conforming to the DVD-Audio standard. 10. The recording medium of claim 9, wherein the reproduction management information is stored in the video area. 13. The recording medium of claim 12, wherein the reproduction management information is stored in a program chain information (PGCI) area of the video area. 10. The recording medium of claim 9, wherein the reproduction management information is stored in the audio area. 15. The recording medium of claim 14, wherein the reproduction management information is stored in an audio title set information management table (ATSI_MAT) of the audio area. A first encryptor for encrypting input video data; A second encryptor for encrypting input audio data; And A recording processor for recording encrypted audio data and moving image data in a predetermined format in a video area of a recording medium, and recording reproduction management information capable of reproducing the encrypted audio data and / or video data in a predetermined area of the recording medium. A recording device comprising. The method of claim 16, A first encoder for encoding the input video data according to a predetermined format and providing the same to the first encryptor; And And a second encoder for encoding the input audio data in a predetermined format and providing the same to the second encryptor. The method of claim 17, And a third encoder for encoding the input audio data in a predetermined format to provide unencrypted audio data to the recording processor, wherein the recording processor transmits the unencrypted audio data to the video area of the recording medium. Recording apparatus, characterized by recording. 17. The recording apparatus of claim 16, wherein the encrypted audio data is encrypted by an encryption scheme conforming to the DVD-Video standard. 17. The recording apparatus of claim 16, wherein the encrypted audio data is encrypted by an encryption method conforming to the DVD-Audio standard. 17. The recording apparatus according to claim 16, wherein the reproduction management information is stored in the video area. A recording apparatus according to claim 21, wherein said reproduction management information is stored in a program chain information (PGCI) area of a video area. 22. The recording medium of claim 21, wherein the recording medium further includes an audio area capable of recording audio data and corresponding additional information, wherein the reproduction management information of video data and / or audio data of the video area is recorded in the audio area. And a recording apparatus. The recording apparatus according to claim 23, wherein the reproduction management information includes encryption related information of the second audio data. A recording apparatus according to claim 23, wherein said reproduction management information is stored in an audio title set information management table (ATSI_MAT) of said audio area. A reproducing apparatus, which is divided into a video region and an audio region, has a video data and audio data in the video region, and a reproducing apparatus having a reproduction management information capable of reproducing the moving image data and / or the audio data in a predetermined region; In: A reproduction processor for analyzing whether or not the audio data and / or video data recorded on the recording medium is encrypted from the reproduction management information read out from the recording medium and an encryption method; A first decryptor for decrypting the moving picture data read out from the recording medium according to whether or not to be encrypted and output from the reproduction processor; And And a second decryptor for decrypting the audio data read out from the recording medium according to whether or not to be encrypted and output from the reproduction processor. 27. The playback apparatus of claim 26, wherein the second decryptor decrypts the audio data corresponding to an encryption scheme conforming to the DVD-Video standard and / or the DVD-Audio standard. 27. The reproduction apparatus according to claim 26, wherein the reproduction management information is stored in one of a video region and an audio region. 29. The reproduction apparatus according to claim 28, wherein the reproduction management information is stored in one of a program chain information (PGCI) area of the video area or an audio title set information management table (ATSI_MAT) of the audio area. The method of claim 26, A first decoder for decoding the video data decrypted by the first decoder; And And a second decoder for decoding the audio data decrypted by the second decoder, and providing the second decoder without passing through the second decoder if the audio data read out by the playback processor is not encrypted. A playback apparatus, characterized in that. A recording medium having a video area and an audio area, having video data and encrypted audio data in the video area, and having a reproduction management information capable of playing the video data and / or the audio data in a predetermined area. In the playback device: A reproduction processor for analyzing whether or not the audio data recorded on the recording medium is encrypted from the reproduction management information read out from the recording medium and an encryption method; And And a decryptor for decrypting the audio data read out from the recording medium according to whether or not to be encrypted and output from the reproduction processor. 32. The playback apparatus of claim 31, wherein the decryptor decrypts the audio data corresponding to an encryption scheme conforming to the DVD-Video standard and / or the DVD-Audio standard. 32. The reproduction apparatus according to claim 31, wherein the reproduction management information is stored in either the video region or the audio region. The reproduction apparatus according to claim 33, wherein the reproduction management information is stored in one of a program chain information (PGCI) region of the video region or an audio title set information management table (ATSI_MAT) of the audio region. 32. The apparatus of claim 31, further comprising a second decoder for decoding audio data decrypted by the decoder, wherein if the audio data read by the playback processor is not encrypted, providing the decoder without passing through the decoder. A playback apparatus, characterized in that. A method of recording data on a medium having a video area capable of recording moving picture data and an audio area capable of recording audio data and additional information therebetween: (a) encrypting the input video data and / or audio data to record encrypted video data and / or encrypted audio data in the video area; And (b) recording reproduction management information capable of playing the encrypted video data and / or the encrypted audio data in a predetermined area. 37. The recording method according to claim 36, wherein the encrypted audio data is encrypted by an encryption method conforming to the DVD-Video standard. 37. The recording method according to claim 36, wherein the encrypted audio data is encrypted by an encryption method conforming to the DVD-Audio standard. The recording method according to claim 36, wherein said reproduction management information is stored in said video area. A recording method according to claim 39, wherein said reproduction management information is stored in a program chain information (PGCI) area of said video area. 37. The apparatus of claim 36, wherein reproduction management information of video data and / or audio data of the video area is recorded in the audio area, and the reproduction management information includes encryption related information of the encrypted audio data. How to record. The recording method as claimed in claim 41, wherein said reproduction management information is stored in an audio title set information management table (ATSI_MAT) of said audio area. The method of claim 36, (c) recording the input audio data in the video area without encrypting the recording method. A reproduction method for reproducing a recording medium having a video area and an audio area, the video area having moving picture data and audio data, and a predetermined area having reproduction management information capable of playing the moving picture data and / or audio data. In: (a) analyzing whether or not the audio data recorded on the recording medium is encrypted and an encryption method from reproduction management information read out from the recording medium; And and (b) decrypting and decrypting the audio data read out from the recording medium according to the encryption status and the encryption scheme. 45. The method of claim 44, wherein in the step (b), the audio data is decrypted in correspondence with an encryption scheme conforming to the DVD-Video standard and / or the DVD-Audio standard. 45. The reproduction method according to claim 44, wherein the reproduction management information is stored in one of a video region and an audio region. 47. The reproduction apparatus according to claim 46, wherein the reproduction management information is stored in one of a program chain information (PGCI) area of the video area or an audio title set information management table (ATSI_MAT) of the audio area. The method of claim 44, and (c) decrypting and decrypting the moving picture data read out from the recording medium by the encryption method and the encryption method of the video data from the reproduction management information. The method of claim 44, and (c) decrypting the audio data read out from the recording medium without encrypting by the encryption method.

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