KR20020059974A - Method for recording audio data on medium - Google Patents

Abstract

PURPOSE: A method for recording digital audio data of a recording medium is provided to record external audio data such as EMD(Electronic Music Distribution) audio data in a DVD-RAM(Digital Versatile Disc-Random Access Memory) with generating management information appropriately for a DVD format, and to convert the EMD audio data into an audio file coinciding with the DVD format according to the existence of a transcoder. CONSTITUTION: An input signal processor(4) receives an EMD audio file transmitted through a PC(Personal Computer) or a modem, and processes inputted signals. A buffer(6) temporarily stores the received EMD audio file. A transcoder(7) selectively provided by an EMD audio provide converts the EMD audio file into a DVD format with a prescribed compression system. A recording signal processor(3) processes signals appropriately for the recording of the EMD audio file, and converts the temporarily stored EMD audio file into a DVD-AR(Audio Recording) format for encoding, to process recording signals together with the EMD audio file. An optical pickup(2) records the signals outputted from the recording signal processor in a recording medium(1) such as a DVD-RAM. And a controller(5) controls operations of each unit according to whether the transcoder is provided and according to the selection of a user, and interprets header information transmitted by being included in the EMD audio file to generate and record management information for the EMD audio file recorded in the recording medium or the DVD format of audio file.

Description

Method for recording digital audio data on a recording medium {Method for recording audio data on medium}

The present invention provides a recording medium for recording and managing external input audio data such as Electronic Music Distribution (EMD) audio data transmitted through an online communication network such as the Internet, on a recording medium such as a DVD-RAM. An audio data recording method is provided.

Recently, DVD (Digital Versatile Disc), a high-capacity and high-density optical disc capable of recording and storing high-quality video data for a long time, has been developed and released. High-definition moving picture data can be recorded and stored, such as a DVD-ROM for reproduction only, a DVD-R recordable once, and a rewritable DVD-RAM or DVD-R / W.

For example, DVD-RAM, a rewritable recording medium, is a high-density optical disc that is currently undergoing specific standardization, and when a rewritable recording medium such as DVD-RAM is developed and released and is commonly used, a user may want his own video data. Of course, audio data can be recorded on a DVD-RAM for a long time.

Electronic music distribution (EMD) audio data transmitted through an online communication network, such as the Internet, is digital audio data, which is a content provider (i.e., audio) for unauthorized copy protection and copyright protection. Depending on the providers, they are encoded in audio data of different native formats, and a unique copy protection code or the like is additionally recorded and provided for transmission.

Accordingly, in order to decode and listen to the original audio data by decoding the EMD audio data, a unique decoder provided from the EMD audio provider, that is, the EMD audio data encoded in the unique format, is restored to the original audio data. Since a decoder having a unique decoding algorithm capable of decoding and a unique decoding code capable of decoding the copy protection code is necessary, it is possible to fundamentally prevent unauthorized copying of digital audio data and the possibility of copyright infringement. Recently, many various audio songs have been recorded and produced in the form of the above-mentioned EMD audio data, and are widely spread.

Accordingly, there are ways to record and store EMD audio data of various inherent formats provided through the Internet, such as DVD-RAM, and other related DVD players and EMD audio providers. As discussed above, the EMS audio providers define the EMS audio data in the DVD format in order to prevent unauthorized copying and copyright protection of the EMS audio data provided therein. Since a separate converter (Transcoder) may be selectively provided or not provided for converting to a predetermined compression method, the DVD related company records the EMD audio data according to whether or not the selectively provided converter is provided. And recording information such as DVD-RAM for management information for managing the same. Suitably generated in the provided methods for recording the circumstances in which urgent need.

Accordingly, the present invention was created in view of the above situation, and records and stores external input audio data such as EMD (EMD) audio data transmitted and received through an online communication network such as the Internet, on a recording medium such as a DVD RAM. However, a unique transcoder is provided in the device to generate and record management information for managing the DVD data appropriately for the DVD format, and to convert the EMD audio data into a compression method defined in the DVD format. It is an object of the present invention to provide a method for recording audio data of a recording medium which is converted into an audio file conforming to a DVD format and recorded in parallel.

1 is a block diagram of an optical disk apparatus to which an audio data recording method of a recording medium according to the present invention is applied.

2 illustrates audio management information (AMGI) generated and recorded by an audio data recording method of a recording medium according to the present invention in a table form.

FIG. 3 is a table showing cell general information C_GI generated and recorded by an audio data recording method of a recording medium according to the present invention.

FIG. 4 is a table illustrating audio recording aggregate general information (AOB_GI) generated and recorded by an audio data recording method of a recording medium according to the present invention.

5 is a table showing EMD file management information generated and recorded by an audio data recording method of a recording medium according to the present invention;

6 is a flowchart illustrating an operation of an audio data recording method of a recording medium according to the present invention;

7 and 8 illustrate audio files and management information generated and recorded by the audio data recording method of a recording medium according to the present invention.

※ Explanation of code for main part of drawing

1: DVD-RAM 2: Optical pickup (P / U)

3: recording processing unit 4: signal processing unit

5 control unit 6 buffer unit

7: converter

Audio data recording method of a recording medium according to the present invention for achieving the above object comprises the steps of: receiving an audio file transmitted in its own unique format; And recording the received audio file on a recording medium without changing its contents, and analyzing management information on the recorded audio file, and recording, by the playback apparatus, the management information in a format set as standard on the recording medium. Characterized in that it comprises,

In addition, the audio data recording method of the recording medium according to the present invention, the first step of receiving an audio file transmitted in a unique format; Confirming whether conversion information for converting and recording the received audio file into a preset audio recording format is present in the device; In accordance with the verification result, recording the received audio file on a recording medium without changing contents and selectively recording the converted audio file on the basis of the conversion information in parallel; And analyzing the management information on the audio files according to the parallel recording, and recording the management information of the audio file into management information of a format set as a standard on the recording medium.

Hereinafter, a preferred embodiment of an audio data recording method of a recording medium according to the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 1 shows a partial configuration of an optical disc device such as a DVD audio recorder (DVD-AR) to which the audio data recording method of a recording medium according to the present invention is applied. An input signal processor (4) for receiving and processing input signals of an EMD audio file transmitted through a personal computer (PC) or a modem connected to a communication network such as a personal computer or the like; A buffer unit 6 for temporarily storing the input and received EMD audio file; A converter (7), optionally provided according to an EMD audio provider, for converting the EMD audio file into a compression scheme defined in a DVD format; Signal processing the EMD audio file to be suitable for recording, converting and encoding the eDM audio file temporarily stored using the converter into a DVD-AR format, and together with the EMD audio file. A recording signal processor (3) for performing parallel recording signal processing; An optical pickup (2) for recording a signal output from the recording signal processor to a recording medium (1) such as a DVD; And according to whether or not the converter 7 is provided and the user selection, the operation of each of the constituent means, the header information included in the EMD audio file is interpreted, and the EMD recorded on the recording medium. The control unit 5 for generating and recording management information on the audio file or the audio file in the DVD format may be included.

On the other hand, audio management information (AMGI :), which is navigation data for controlling playback of an MPEG audio file recorded on the recording medium 1 and a DVD format, which is selectively recorded in parallel according to whether the converter is provided. In Audio Manager Information, management information suggested in DVD-AR format, for example, as shown in FIG. 2, real-time audio management information (RTR_AMGI: Realtime Audio Manager Information) and audio file information. An audio file information table (AUDFIT); Audio Still Video File Information Table (ASVFIT), Original Program Chain Information (ORG_PGCI), User Defined Program Chain Information Table (UD_PGCT), Text Data Management Information (TXTDT_MG: Text Data Manager) and Manufacture's Information Table (MNNFIT) are included. In addition, an EMD File Information Table (EMDFIT) for managing the EMD audio file is additionally included. Consist of included.

Therefore, when the EMD audio file is recorded on the recording medium 1 such as the DVD RAM, an EMD file information table EMDFIT is generated and recorded for controlling the reproduction of the EMD audio file. When audio data in DVD format is recorded in parallel with the audio file, an audio file information table (AUDFIT) for controlling playback of the DVD format audio data is generated and recorded.

When the EMS file information table EMDFIT and the audio file information table AUDFIT are generated and recorded together with the above process, the audio file information table includes instruction information indicating the EMS file information table; For example, pointer information is recorded and recorded so that the MD file information table EMDFIT and the audio file information table AUDFIT are linked.

That is, as shown in Figs. 3 and 4, the cell general information (C_GI) and the audio object general information (AOB_GI: Audio Object General Information) for controlling reproduction of audio data recorded in the DVD format are controlled. An audio record set information search pointer number (AOBI_SRPN) and audio still video unit information recorded in the cell general information and the audio record set general information by additionally recording an EMD Search Pointer Number (EMD_SRPN), respectively. The EDM audio file recorded on the recording medium such as the DVD RAM may be searched by the search pointer number (ASVUI_SRPN) and the audio recording assemblies (AOB) so as to be associated with the EMD audio search pointer number. To be controlled to select playback alternately with audio files.

Meanwhile, management information having a hierarchical structure similar to that of the audio file information table AUDFIT may be recorded and included in the EDM file information table EMDFIT. For example, as shown in FIG. D file information table information (EMDFITI), EMD audio stream information (EMD_AUD_STI: EMD Audio Steam Information), and EMD file information (EMDFI: EMD File Information) may be recorded.

The EMD file information table information (EMDFITI) may include the number of EMD file information, the number of EMD audio stream information, and the like, and an audio coding scheme in the EMD audio stream information (EMD_AUD_STI). , Quantization, frequency / bit rate, number of audio channels, digital right management (DRM) information, and the like may be recorded. Also, in the EMD file information (EMDFI), EDM file general management information, The audio recording aggregate information and the like may be recorded. Since the audio coding scheme and the DM information are transmitted in the header of the EMD audio file, the EDM audio stream information (EMD_AUD_STI) may be read. Will be saved.

For reference, the DMR information is information widely used to manage unauthorized copy protection, copyright protection, and payment of audio files.

Therefore, in the optical disk device configured as described above, the EMD (EMD) audio data transmitted and received through an online communication network such as the Internet is recorded and stored in a recording medium such as a DVD, but the management information for managing the DVD format In accordance with whether or not an optical disk device is provided with a unique transcoder for generating and recording the EDM audio data and converting the audio data into the audio compression method specified in the DVD format, The audio file is converted into a matching audio file and recorded in parallel. The operation will be described in detail as follows.

First, FIG. 6 shows an operation flowchart of an embodiment of an audio data recording method of a recording medium according to the present invention. The audio is inherently transmitted through a personal computer (PC) or a modem connected to a communication network such as the Internet. When the EMD audio file recorded and produced in the recording format is transmitted and received (S10), the control unit 5 converts the EMD audio file into the audio compression method defined in the DVD format. The converter 7 selectively provided in accordance with the audio provider makes it possible to detect whether or not it is provided in the optical disk apparatus (S11).

On the other hand, if the converter 7 is not provided in the optical disc apparatus as a result of the confirmation, the control section 5 operates the input signal processing section 4 and the recording signal processing section 3 to control the received signal. The EMD audio file is recorded in real time on a recording medium 1 such as a DVD RAM (S12).

Also, the audio coding scheme and the DM information, which are transmitted in the header of the EMD audio file, are read, and the EMD file information included in the audio management information (AMGI) described above with reference to FIGS. 2 and 5. Create and record the table EMDFIT.

That is, an EMD file information table including EMD file information table information (EMDFITI), EMD audio stream information (EMD_AUD_STI), and EMD file information (EMDFI) is generated and recorded (S13). Since the converter 7 is not provided in the optical disc device as described above, the EMD audio file cannot be converted and recorded into an audio file conforming to the DAD-AR format.

In addition, since the audio file information table (AUDFIT) described above with reference to FIG. 2 is not generated and recorded in the audio management information AMGI, the recording medium 1 such as the DVD is eventually shown in FIG. As described above, an EMD audio file including an EMD audio file header, an EMD DM information, and an EMD audio data elementary, and management information for managing the EMD audio file, particularly in an divdie audio recording format, are included. Corresponding management information is recorded and linked so that various additional functions provided by the DVD can be linked with the playback operation of the EMS audio file, for example, a background display function using a still image. do. ,

On the other hand, as a result of the confirmation, when the converter 7 for converting the received and received EMD audio file into the audio compression method defined in the DVD format is provided in the optical disc device, the control unit 5, the control unit 5, By operating the signal processor 4 and the buffer unit 6, the received EMD audio file is temporarily stored in the buffer unit 6 (S14), and temporarily stored using the converter. The audio file is converted and encoded by the audio compression method defined in the DVD format and recorded on the recording medium 1 (S15).

Then, the EMD file is temporarily read in the buffer unit 6, and is recorded in parallel with the recording medium 1 such as a DVD RAM (S16). The audio file and the EMD corresponding to the DVD audio recording format are recorded. Whether or not the audio file is recorded in parallel can be changed according to user selection.

That is, according to the user's selection, it is possible to select and record only the EMD audio file or to select and record only the audio file corresponding to the DVD audio recording format, and the audio file matching the DVD audio recording format as described above. When the EMD audio file is recorded in parallel, both the audio file information table AUDFIT and the EMD file information table EMDFIT described above with reference to FIG. 2 are generated and recorded (S17).

In addition, the audio file information table includes instruction information for indicating the EMD file information table, for example, EMD search pointer number (EMD_SRPN) information described above with reference to FIGS. 3 and 4. The EDM file information table EMDFIT and the audio file information table AUDFIT are linked together.

Therefore, in the recording medium 1 such as the DVD RAM, as shown in FIG. 8, an EMD audio file and an audio file converted and recorded in the DVD audio recording format are recorded in parallel. Management information corresponding to the DVD audio recording format for management is recorded and linked, so that various additional functions provided by the DVD can be linked with the playback operation of the MD audio file as described above.

For reference, the transcoder may include a transcode for converting an EMD audio file to an audio compression scheme defined in a DVD format, DMR information, and a header of an EMD file. Various pieces of information for converting the information may be provided in software or manufactured in hardware.

As mentioned above, preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The method of recording audio data of a recording medium according to the present invention as described above relates to a method of recording audio data of a recording medium. The present invention relates to an EMD (EMD) audio data transmitted and received through an online communication network such as the Internet. The same external input audio data is recorded and stored on a recording medium such as a DVD, and the management information for managing the same is generated and recorded according to the DVD format, and the EMD audio data is converted into a compression method defined in the DVD format. In order to be able to do so, according to whether or not to provide a unique transcoder (optional) provided by the EMD audio provider, by converting to an audio file that matches the DVD format to selectively record in parallel, EMD Audio To transfer data in its own format Even if no converter is provided from the provider, the management information corresponding to the DVD audio recording format is generated and recorded, so that various additions provided by the DVD can be managed to be linked with the playback operation of the EMS audio file. It is a very useful invention.

Claims (12)

Receiving an audio file transmitted in a proprietary format; And Recording the received audio file on a recording medium without changing its contents, and analyzing management information on the recorded audio file, and recording, by the playback apparatus, the management information in a format set as a standard on the recording medium. Audio data recording method of a recording medium, characterized in that The method of claim 1, The first step, the audio data recording method of the recording medium, characterized in that for receiving an Electronic Music Distribution (EMD) audio file transmitted through a communication network. The method of claim 2, In the second step, the management information for the EMD audio file is recorded as management information in a DVD-AR format. The method of claim 3, wherein And the management information is generated and recorded in an EMD file information table recorded in the audio management information in DVD-AR format. Receiving an audio file transmitted in a proprietary format; Confirming whether conversion information for converting and recording the received audio file into a preset audio recording format is present in the device; In accordance with the verification result, recording the received audio file on a recording medium without changing contents and selectively recording the converted audio file on the basis of the conversion information in parallel; And And analyzing the management information on the audio files according to the parallel recording, and recording the recording information into management information in a format set as a standard on the recording medium by the playback apparatus. How to record data. The method of claim 5, The received audio file is an EMD (EMD) audio file transmitted through a communication network, and the converted audio file is an audio file conforming to a DVD audio recording (DVD-AR) format. How to record audio data. The method of claim 6, And the conversion information is selectively provided according to an EMD audio provider in order to convert the EMD audio file into an audio compression method defined in a DVD format. The method of claim 5, In step 3, if the conversion information is present in the device, the received audio file and the audio file converted based on the conversion information are selectively recorded in parallel according to a user selection. An audio data recording method of a recording medium. The method of claim 5, In step 3, if the conversion information does not exist in the device according to the verification result, only the received audio file is recorded. The method of claim 6, In step 4, when the recording is performed in parallel, management information on the EMD audio file and the audio file in DVD-AR format is generated as management information in DVD-AR format. An audio data recording method of a recording medium, characterized in that for recording. The method of claim 10, And the management information is generated and recorded in the audio file information recorded in the audio management information in the DVD-AR format and in the EMD file information table. The method of claim 11, And the pointer information for indicating the EMD file information table is recorded in the audio file information.