KR100408308B1 - Method for reproducing or recording data on Storage medium storing catalog information - Google Patents

Abstract

Disclosed are a storage medium in which catalog information is stored, an apparatus for reproducing catalog information, and a method thereof. The present invention records catalog information in the form of still and additional information together with audio data on a storage medium such as DVD, which is an optical recording storage medium for recording and reproducing various data, and reproduces catalog information when audio is reproduced. The present invention relates to a method capable of providing various information about audio being played back. In addition, the present invention has a buffer memory for catalog playback in order to maintain the compatibility with the standard already defined, and to provide a catalog function that can be viewed in real time freely during audio playback, catalog if the user has no choice The present invention relates to a device capable of automatically reproducing the content of the audio data in accordance with the reproduction state of the audio data.

Description

Method for reproducing or recording data on a storage medium storing catalog information {Method for reproducing or recording data on Storage medium storing catalog information}

TECHNICAL FIELD The present invention relates to the field of optical recording and reproduction, and more particularly, to a storage medium and catalog information reproduction apparatus and method for storing audio data and catalog information on the audio data.

In the optical recording and reproducing apparatus using a DVD (Digital Versatile Disc) as a storage medium, there is no proposal of such a catalog function, an apparatus or a method for performing this function.

Here, the catalog is a printed material for efficiently delivering the production information on the audio recorded on the storage medium, the information on the contents, the information on the composer, the singer and the performer, or the like, or the like. In particular, in the present invention, the contents of audio, which are main data stored in the storage medium, are included in the form of video information consisting of additional information such as still images and subtitles. Refers to a special form of additional data.

Such catalog data is basically played on a playback device having a video decoder capable of playing it, and the browsing function allows the user to browse the desired contents of the catalog without interrupting the playback while the audio is playing. It can be said that having a preferred form.

In addition, in order to facilitate the production of catalog information, it is desirable to have a structure that can easily produce such catalog information by using an already-built DVD-Video editing system.

In order to satisfy this requirement, two kinds of information (audio and catalog) having different functions in one storage medium must be satisfied at the same time. Therefore, the catalog information must be stored in temporary storage in advance in a limited capacity to satisfy the condition that the catalog content can be played at the same time even if the audio data is played at the maximum transfer rate that the playback device can play. Can be.

That is, when the storage medium is inserted into the driving device, the information for configuring the catalog must first be configured to read the catalog information stored in the storage medium, store it in a temporary storage place, that is, store it in a memory, and, if necessary, compose and output the image. . In this case, in order to store in the memory, not only the size of the image should be limited, but also a method that can be used efficiently must be devised.

In addition, the catalog information must add navigation information, that is, search information that has been suggested in DVD-Video, to create a structure that can have a user search function so that a user can search an arbitrary page. Standards should be established, and it is desirable to have an editing system that can produce catalogs that meet these standards and share them with an editing system in accordance with the DVD-Video standard.

The DVD-ROM is the Part 1 Physical Specification of the DVD Specifications for Read-Only Disc, published by 10 companies including Toshiba Corporation of Japan in August 1996. The recording medium defined by Specifications) and Part 2 File System Specifications. And DVD-Video is a video edited by a video information recording method defined by Part 1 Physical Specifications of the DVD Specifications for Read-Only Disc Refers to a DVD-ROM disc on which video is recorded.

An object of the present invention is to provide a storage medium in which catalog information is stored to meet the above requirements.

Another object of the present invention is to provide an apparatus and method for freely viewing the contents of a catalog desired by a user from catalog information on audio data while playing audio data stored on a DVD disc.

It is still another object of the present invention to automatically access the location of a catalog using real-time playback information extracted from the audio data even if the user does not specify the catalog view at a specific location while playing the audio data stored on the DVD disc. An apparatus and method for reproducing catalog information are provided.

In order to achieve the above objects, a storage medium according to the present invention is characterized in that, in a storage medium in which audio data is stored and randomly accessible, catalog information including information related to the stored audio data is stored in a predetermined area.

The catalog information reproducing apparatus according to the present invention includes a buffer memory for dividing and storing video data for catalog information including audio data reproduced from a disc and information about audio data, and audio for decoding the audio data and applying a reconstructed audio signal. And a video decoder configured to restore the decoder and catalog information into an image and additional information.

In the method for reproducing audio information recorded on a disc, the method for reproducing catalog information according to the present invention comprises the steps of: reproducing the catalog reproduction information for reproducing the catalog information composed of the audio data and the information related to the audio data. And reproducing the catalog information recorded in the predetermined area of the disc according to the catalog reproduction information while the audio data is reproduced.

1 is a view showing a configuration area of a DVD-ROM disk proposed in the present invention.

2 is a table showing the configuration of catalog reproduction information for reproducing catalog information.

3 is a block diagram of a configuration of a reproduction device capable of reproducing catalog information according to the present invention.

Hereinafter, with reference to the accompanying drawings, a description will be given of a storage medium and a catalog information reproducing apparatus and a method for storing the catalog information according to the present invention.

FIG. 1 shows a structure of information stored in a disk, and a storage space of an entire DVD media is called a volume space (100), and the volume space 100 is for volume information and a file structure recorded. Volume and file system 110 as information, a video area 120 for recording image information, an audio area 130 for recording audio data, and other file areas 140 It is done.

In addition, the video area 120 and the audio area 130 respectively include VMG (Video management: 121) and AMG (Audio Management: 131) areas, which contain management information about recorded video and audio, and actual video and audio data. It is composed of VTS (Video Title Set: 121-124) and ATS (Audio Title Set: 131-134).

The VTS again has a plurality of video titles, which in turn consist of a plurality of program chains (PGC: 125-128). A program chain is a unit that can be handled independently, which means a collection of data. The VTS file for this catalog is composed of still and sub pictures, which can constitute a catalog, and navigation information for controlling still and sub pictures. The configuration of still images, sub-pictures, and navigation information and its provisions are well illustrated in the DVD-Video standard.

In the present invention, catalog playback information containing information for enabling playback by connecting two different pieces of information, VTS and ATS, is stored in the AMG area 131 or the audio file area. The AMG area 131 has a space for recording information on all audio and information on each title, and the location of the catalog information can be additionally recorded in this area 131.

In the embodiment of the present invention, the catalog reproduction information is stored in the AMG area or the audio file area, but it does not matter in any position on the disc. In addition, when the disc is first read, an appropriate means for distinguishing the presence or absence of catalog play information should be defined. Appropriate means for distinguishing the presence or absence of catalog reproduction information may be defined by specifying a file name, or may designate a specific area predetermined as a physical or logical address on a disk as a space for storing the information, or a volume. This may be a method of writing the existence and location of such a file in a data area that must be read when reading a disc, such as an information area.

This catalog playback information is an automatic playback information that designates the location of the catalog to be played at a specific time according to the location of the video information containing the catalog, the file separator, and the real-time playback information of the audio obtained when the audio is played in real time. Table (Auto Presentation Information Table).

In addition, in order to effectively use the catalog information exemplified by the present invention, the catalog information is divided into one common catalog for all audio and a plurality of title catalogs corresponding to individual audio titles contained in the audio. The common catalog and each title catalog are composed of PGC (program chain) units within a video title.

2 shows the configuration of the catalog reproduction information proposed by the present invention. In Fig. 2, a file identifier is a file identifier that can recognize that the file contains catalog reproduction information. The catalog PGC number indicates a corresponding common catalog in the video title in which the catalog is stored and a PGC number corresponding to the title catalog. The catalog pointer points to a location on the disk of the file or PGC in which the catalog is recorded.

In addition, the auto play information table has play time information and information on the play position of the catalog so that the catalog can be automatically and properly played using real time play information obtained from the audio data while each title is recorded. In this case, when a user gives no command while one title is being played back, it indicates which still picture and sub-picture in the catalog should be played back.

3 is a block diagram illustrating a playback apparatus for performing the present invention, in which a signal read from the disk 210 is restored as a digital signal through, for example, a DVD playback signal processor 220 according to a physical standard of a DVD-ROM. Applied to the buffer memory 250.

This playback information is divided into audio and video under the control of the system control unit 240, and audio data conforming to the DVD-Audio standard is recorded in the audio buffer 251, and video data recorded in the DVD-Video standard, that is, catalogue. Data is written to video buffer 252. In this case, the buffer memory 250 may use the same single memory space or may allocate and use separate memories.

The catalog data stored in the buffer memory 250 is read out according to a control signal generated by the system controller 240, and is restored to an image signal through the video decoder 270 and output.

At this time, the system control unit 240 based on the user's control command via the remote control, automatic playback information table according to the catalog playback information, real-time playback information extracted from the audio data, and the video buffer based on the navigation information contained in the catalog data An appropriate control signal is generated so that the catalog data to be reproduced among the data recorded at 252 can be output through the video decoder 270.

On the other hand, the pure audio information recorded in the DVD-Audio standard is applied to the audio decoder 260 through the audio buffer 251 to be restored as an audio signal and output.

Here, the video decoder 270 refers to a device for restoring the video data produced by the DVD-Video standard in the form of the original video and the information added thereto. Commercialization of the device is made and the technique is well known to those skilled in the art, detailed description thereof will be omitted.

In addition, the audio decoder 260 may convert audio data consisting of linear pulse coded modulation (Linear PCM) or other predetermined method into audio data including management information and real-time playback information for managing the original data. Restore to audio and additional information.

The system control unit 240 and the servo unit 230 control the system to operate properly by using control commands from the user and various control signals obtained from the reproduction signal.

Next, a detailed description will be given focusing on the video buffer 252 in which the catalog data shown in FIG. 3 is stored and read.

The playback apparatus shown in FIG. 3 must store two catalog information, a common catalog and one title catalog, in the video buffer 252 before playing a specific title. Otherwise, the desired catalog information cannot be reproduced while the song is playing.

When one of the common catalog and the title catalog is selected, the sum of the two catalog data is not larger than the memory capacity of the video buffer 252 for catalog reproduction.

Referring to FIG. 1 again, it is assumed that PGC1 125 is a common catalog for all audio, and that PGC2 126 is audio title 1, that is, title catalog 1 related only to the first song. In this way, assuming that PCG3 127 is the title catalog 2 for the second song and PGCn + 1 128 is the title catalog n for the nth song, the catalog information necessary for playing each song is the common catalog information. And a title catalog for each song to be played.

On the other hand, the amount of buffer memory of a playback device that plays back a typical DVD-Video is about 4 Mbit. This serves as a time buffer to resolve the discrepancy between the data transfer rate read from the disc and the bit rate of audio or video information to be reproduced in real time, such as VBR (video buffer rate).

This existing buffer must be used to play real-time audio, and additional memory must be used to play the catalog. Therefore, in the case where 16 Mbit memory is assumed as the entire buffer memory 250 in consideration of using only one memory, the memory size of the video buffer 252 for catalog reproduction is 12 Mbit. For example, if the amount of data in the common catalog is 5Mbit, the amount of title catalog for each remaining title cannot exceed 7Mbit at maximum.

In addition, there may or may not be title catalog information for each title. If the sum of all catalog data is smaller than the memory capacity of the video buffer 252, the catalog information for all the songs may be recorded in the common catalog without dividing the catalog into the common catalog and the title catalog.

When the disc is first started playing, the system controller 240 reads the disc volume information, file system, and information such as VMG and AMG. As illustrated above, PGC data including catalog information is read from the video buffer 252 according to a specific file type or catalog reproduction information stored in the AMG area 131. When all the necessary catalog data is read, the audio information is read and output through the audio buffer 251. The audio information is converted into an audio signal through the audio decoder 260 and output.

On the other hand, the catalog information stored in the video buffer 252 is when the user selects the catalog, that is, when the user inputs a command for viewing the desired catalog part through an input unit such as a remote control for controlling the playback device. In response to this, specific catalog data is output through the video decoder 270.

If there is no command to play a specific catalog from the user at all, if the user does not perform any operation for a certain time or if the auto play mode is set, the information in the predetermined catalog is In order to send an image, the content stored in the video buffer 252 is output through the video decoder 270.

At this time, the catalog information is composed of a still picture for the background and a sub-picture for text transmission, and the control structure of the still picture and the sub-picture is controlled by using the navigation information according to the standard defined in the DVD-Video standard.

By doing so, there is an advantage that multi-language support is possible by selecting up to 32 sub-pictures in DVD-Video as compared to simply using still pictures.

In addition, in the case where the still image directly includes text information, the resolution of the still picture must be increased in order to reproduce the text information as a clear image. However, the compression rate cannot be increased. More efficient encoding is possible by using a compression method that can increase the compression ratio for an image and efficiently compress characters specified by DVD-Video for characters.

As described above, the present invention implements the catalog function using the DVD-Video standard, which is already defined, so that not only the catalog for DVD-Audio can be edited using the DVD-Video editing system but also the catalog of DVD-Audio. In the case of a playback device capable of playing back, the additional circuit can be minimized in consideration of the fact that it is a combined device capable of substantially playing DVD-Video.

In addition, the present invention has the advantage that the multi-language can be processed by processing the character information of the catalog as a sub-picture instead of simply processing the still image by using a predetermined DVD-Video standard.

Claims (33)

A method for reproducing data on a storage medium, Reading audio data and catalog information associated with the audio data; Storing the read catalog information; Reproducing the audio data and the catalog information read from the storage medium, The audio data and the catalog information are stored on the storage medium, and the storing of the catalog information is performed before the reproduction of the audio data and the catalog information. The method of claim 1, And the storage medium comprises an audio area for audio data including an audio data recording area in which the audio data is recorded. The method of claim 1, And the storage medium has an audio data recording area in which the audio data is recorded, and a video information area in which the catalog information is recorded. The method of claim 1, The reproduction of the catalog information Receiving user selection information; And reproducing the catalog information according to the user's selection information. The method of claim 4, wherein And the reproduction of the catalog information includes selectively reproducing the catalog information selected by the user and reproducing the catalog information satisfying a predetermined condition. The method of claim 5, The selected condition is a case in which the user does not select the catalog information for a predetermined time or sets a catalog automatic playback mode. The method of claim 1, And the reproduction of the catalog information is performed simultaneously with the reproduction of the audio data. delete In the method of recording data on a storage medium, Encoding audio data and catalog information associated with the audio data; Recording the encoded audio data and the encoded catalog information on the storage medium, Encoding the catalog information Encoding video data representing a still picture relating to the audio data and additional information representing a sub picture for character transmission; Storing the encoded video data and the encoded additional data on the storage medium. delete The method of claim 9, And wherein said encoding step comprises encoding said catalog information in accordance with a standard versatile disk-video standard. The method of claim 9, And the recording method records the catalog information in an image information area of a volume space of the storage medium. A method for reproducing data recorded on a storage medium, Reading encoded audio data and encoded catalog information associated with the audio data; Storing the read encoded catalog information; Decoding the encoded audio data and the encoded catalog information read from the storage medium, The encoded audio data and the encoded catalog information are stored in the storage medium, and storing the catalog information is performed before decoding the encoded audio data. delete A method for reproducing data stored in a storage medium, Reading catalog information including common catalog data for information commonly applied to audio data corresponding to the audio data and one or more audio data recorded on the storage medium, and title catalog information corresponding to the respective audio data. Steps, And reproducing the audio data read from the storage medium, the common catalog data and the title catalog data. In the method for recording data stored in the storage medium, Encoding catalog information including common catalog data for information commonly applied to audio data associated with the audio data and one or more audio data recorded on the storage medium, and title catalog information corresponding to each audio data. Wow, Recording the encoded audio data, the encoded common catalog data and the title catalog data on the storage medium. In the method of reproducing the data recorded on the storage medium, An encoded catalog comprising common catalog data for encoded audio data and information commonly applied to one or more audio data recorded on the storage medium associated with the audio data and title catalog information corresponding to each audio data. Reading the information, Decoding the encoded audio data read from the storage medium and the encoded common catalog data and title catalog data. In the method of reproducing the data recorded on the storage medium, Common catalog data and title catalog corresponding to each audio data that are commonly applied to encoded audio data and one or more audio data stored in a predetermined area of the storage medium and associated with the audio data and recorded on the storage medium. Reading encoded catalog information including the information; Controlling reproduction of the common catalog data and title catalog data; The catalog information area is A catalog management (CMG) area having management information on the catalog information; And a catalog title set (CTS) in which at least one catalog title including the catalog information associated with each of the audio data is recorded. In the method of reproducing the data recorded on the storage medium, Reading audio data and still picture information stored in a predetermined area of the storage medium and associated with the audio data; Controlling reproduction of common still picture information commonly applied to one or more audio data recorded on the storage medium and title still picture information corresponding to the respective audio data; The still image information area is A still picture management (CMG) area having management information on the still picture information; And a still picture title set (CTS) in which at least one still picture title including the still picture information associated with each of the audio data is recorded. In the method of reproducing data from a storage medium, Reading catalog information from the storage medium into a buffer; Reading and decoding audio data from the storage medium while reading and decoding the catalog information from the buffer. A method of playing encoded audio data recorded on a storage medium, the method comprising: Reading encoded catalog information associated with the encoded audio data from the storage medium into a buffer; Reading and decoding the encoded audio data from the storage medium while reading and decoding the encoded catalog information from the buffer. A method for reproducing data on a storage medium, Reading audio data and / or catalog information associated with the audio data; Reproducing the audio data and the catalog information read from the storage medium, The audio data and the catalog information are stored on the storage medium. In the method of recording data on a storage medium, Encoding audio data and catalog information associated with the audio data; Recording the encoded audio data and the encoded catalog information on the storage medium. A method for reproducing data recorded on a storage medium, Reading encoded audio data and encoded catalog information associated with the audio data; Decoding the encoded audio data and the encoded catalog information from the storage medium, The encoded audio data and the encoded catalog information are stored on the storage medium. A method for reproducing data recorded on a storage medium, Reading audio data in an audio title set and catalog information associated with the audio data stored in the storage medium; Reproducing the audio data and the catalog information from the storage medium. A method for reproducing data recorded on a storage medium, Reading audio data in an audio title set and catalog information associated with the audio data stored in the storage medium; Reproducing the audio data and the catalog information from the storage medium, And the catalog information is automatically reproduced together with the audio data according to catalog reproduction information. A method for reproducing data on a storage medium, Reading audio data and catalog information associated with the audio data stored on the storage medium; Reproducing the audio data and the catalog information according to an audio auto play table; The storage medium includes an audio area including an audio data area and an audio information area, The audio data is recorded in the audio data area, and the audio information area includes catalog reproduction information connecting the audio data and the catalog information during reproduction, and the catalog reproduction information corresponds to a specific time as the audio data. And an auto presentation information table for determining the catalog information to be reproduced. In the method of recording data on a storage medium, Encoding audio data and catalog information associated with the audio data stored in a predetermined area of the storage medium; Recording the encoded audio data and the encoded catalog information on the storage medium according to an audio auto play table; The storage medium includes an audio area including an audio data area and an audio information recording area, The audio data area is recorded with the audio data, and the audio information recording area includes catalog reproduction information for connecting the audio data and the catalog information during reproduction, and the catalog reproduction information is the catalog obtained from the audio data. And an automatic reproduction information table for determining the catalog information to be reproduced corresponding to a specific time according to the reproduction information. A method for reproducing data recorded on a storage medium, Reading audio data and catalog information associated with the audio data stored in a predetermined area of the storage medium; Decoding catalog reproduction information including the automatic reproduction information table for determining the catalog information reproduced corresponding to a specific time with the audio data; The catalog information And a catalog title set (CTS) in which a catalog management (CMG) area having management information on the catalog information and at least one catalog title including the catalog information associated with each of the audio data are recorded. How to play. In the method of reproducing data on a storage medium, Read catalog information associated with audio data and the audio data stored in the storage medium and including still information for a background image, a sub-image for subtitles, and navigation information for controlling the still and sub-images. To do that, Playing the audio data and the still and sub-images using the navigation information. In the method of recording data on a storage medium, Encoding catalog information associated with the audio data, the catalog information including still images for background images, sub-images for subtitles, and navigation information for controlling the still images and the sub-images; Recording the encoded audio data, still images, sub-pictures, and navigation information on the storage medium. A method for reproducing data recorded on a storage medium, Read encoded catalog information associated with the audio data, the encoded catalog information being associated with the audio data, including still images for background images, sub-images for subtitles, and navigation information for controlling the still images and the sub-images; Steps, Decoding said encoded audio data read from said storage medium and said encoded still, sub-picture, and navigation information. A method for reproducing data recorded on a storage medium, Reading encoded audio data and encoded catalog information associated with the audio data; Reproducing the audio data and the catalog information using navigation information, The catalog information A catalog management set (CMG) area having management information on the catalog information, and a catalog title set (CTS) in which at least one catalog title including the catalog information associated with each of the audio data is recorded; And the catalog title includes at least one still picture, at least one sub-picture, and navigation information for controlling the still picture and the sub-picture.