KR20000008271A - Method for managing after-recorded audio data of rerecordable recording media - Google Patents

Abstract

PURPOSE: A method for managing an after-recorded audio data is to record a still picture in a rewritable recording media, after-record an audio data related to the still picture, and effectively manage the after-recorded audio data. CONSTITUTION: A method for managing an after-recorded audio data comprises the steps of: (S11) recording an after-recorded audio data to a recording picture; (S12-S14) identifying whether a pre-written after-recorded audio for the recording picture; and (S15-S19) displaying that the after-recorded audio to the recording picture is alternately recorded in the recording information of the prewriting after-recorded audio according to the identifying result. Therefore, the after-recorded audio to one still picture and a final after-recorded audio are separately managed.

Description

How to manage audio data in rewritable recording media

A data management method of a rewritable recording medium, and more particularly, a still picture is recorded on a rewritable recording medium, and then audio data associated with the still picture is recorded. When the audio data is reviewed again, the audio data management of the rewritable recording medium which effectively manages the recorded audio data (hereinafter referred to as "after-recorded audio data"). It is about a method.

Optical discs are becoming more common as CDs become more popular, and DVD (Digital Versatile Disc) standards are becoming more expected. Optical discs include CD-Rs and DVD-Rs that can be written once, in addition to CD-ROMs and DVD-ROMs for playback purposes, and standard discs such as rewritable CD-RWs, DVD-RAMs, or DVD-RTRWs. It is proposed. In addition, the working group's activities for the unified standard of DVD-RAM capable of recording and reproducing are currently in progress.

Here, since rewritable DVD-RAM, DVD-RTRW, etc. are large-capacity recording media, users can record various movie pictures or still pictures, and also record audio data of the still pictures. When a moving picture or a still picture is recorded, information for later indexing and reproducing is generated together with the recording of the picture and recorded in the reproduction control information (navigation information) file of the recording medium. .

The reproduction control information file has a structure as shown in FIG. 1, wherein the dual still image bob (VOB) video field (S_VOBI # i) and the cell information field (Cell # i) are described above. As described above, each moving picture or still picture is generated and inserted into the reproduction control information file. The playback control information file generated and recorded as described above is read out at the time of playback, and the contents thereof are all stored in the memory. Then, by using the playback control information of the stored memory, a moving picture or a still image corresponding to the item to be played back is searched from the recording medium. You will play it.

By the way, when a still image having a small size is recorded on a recording medium instead of a moving image having a large size, a number of still images are recorded. For example, about 60,000 or more still images are recorded on a 4.7 GByte recording medium. If only still images are recorded on the recording medium, the amount of information generated for playback control and indexing becomes very large. . The size occupied by the two information fields (still image bob information field and cell information field) generated at each recording of one still image (or audio data recorded in association with it) is a reserved area in FIG. Since 84 bytes (= S_VOB (36 bytes) + 2 * Cells (2 * 24 bytes)), including the above, the amount of information of the two fields generated under the above example conditions is about 5040 Kbytes (= 84 * 60000). ) FIG. 2 illustrates a form in which bob information and cell information are generated and associated with each other when one still image is generated as described above.

Therefore, the size of the reproduction control information file of the recording medium recording only the still image is at least 5 MByte, and when reproducing, the contents of the corresponding file are read out and stored in the memory, and then the desired still image is searched and reproduced according to the contents. Not only does it have a problem of having a large memory for storing the contents of the reproduction control information file, but also limits the size of the memory for storing the contents of the reproduction control information file to, for example, 512 KByte. In this case, there is a problem that the number of still images recorded on the recording medium should be limited.

Therefore, in order to solve this problem, the inventors of the present invention generally require that a user fix an attribute of an image (for example, image size, resolution, audio quality, etc.), and then photograph a plurality of still images. Focusing on the tendency to change the attributes, a method of grouping according to the attributes of the still image and the maximum number of the still images was proposed.

That is, in this method, when recording still images, playback control information and index information are not generated for each still image, and as shown in FIG. According to the identity of the associated audio attributes, a plurality of still images share control information for the reproduction, and the shared reproduction control information [VOB information (BOB; S_VOBI # i) and cell information (Cell # 2, Cell #). 3,…)] to group and record the index information of the still images (that is, the position information for indexing each still image having the same attribute is grouped and recorded in association with the shared playback information) to thereby record a large amount of recording. By reducing the amount of playback control information and index information generated by recording a large number of still images on a medium, a large number of still images can be accessed and reproduced by a small amount of resources. So you can break them.

Here, the one still image may be composed of only one video part or one video part and one audio part depending on whether or not an audio signal is inserted during capturing (capture). In addition, one still image / audio collection, VOB (Video OBject), is composed of a group of still images having the same property, and the property is such as image size (aspect ratio) and resolution. Video properties and audio properties such as audio quality (sampling ratio).

In the above-described method, a plurality of still images (Video Part #i) having the same property in the still image / audio recording set reproduction information (VOBI; hereinafter referred to as "Bobby") field (S_VOBI # i) and the original recording are linked. Audio data (original audio data); Audio Part #i] is recorded, and the information includes an address on the recording medium for each still image and audio. As the address information, only the start address of the first still picture (Video Part #i) is used as an absolute address, and the size of the address map is reduced by using the size as a relative address for each still picture and audio.

After recording a still image using the above-described method, audio data may be recorded to generate post-record audio data linked to the still image, or new original recorded audio data may be generated by changing original audio data belonging to the still image. Can be.

As a method of managing the post-record audio data generated as described above, the one-file management method of managing the pre-record audio data as one file together with the still image and the original audio data in FIG. 4 is the inventor of the present application. Proposed by them. On the contrary, a two-file management method for managing still images and original audio data as one file and managing pre-recorded audio data as another file has also been proposed.

In such management schemes, when the user reviews the audio recording data again for the still image while the audio recording audio data for the still image is recorded, the recorded audio recording data is efficiently managed. There is a desire for development of a way to do this.

Accordingly, the present invention was created in view of the above circumstances, and after recording a still image on a rewritable recording medium, the audio data associated with the still image is recorded, and then the audio data is again recorded for the still image. In case of writing, the overwriting information [information indicating that the recording of the recording audio data has been replaced] is generated in the recording audio map in which the information on the recording audio data is recorded, thereby effectively managing the recording audio data. It is an object of the present invention to provide a method for managing audio data of a rewritable recording medium.

1 is a table showing data for managing all data recorded on a recording medium;

2 is a diagram illustrating a process of generating data for managing the same with the conventional still image recording.

3 is a conceptual diagram illustrating a still image index information structure for explaining a method of managing by grouping a still image according to the related art.

4 is a conceptual diagram illustrating a method of integrating and managing still images and original audio, and post-record audio data.

5 is a conceptual diagram showing the structure of a still image AV file information table;

FIG. 6 is a diagram illustrating an example of a data format of a still image bob general information area illustrated in FIG. 5;

FIG. 7 is a conceptual diagram showing the structure of an AV map shown in FIG. 5;

FIG. 8 is a map shown in FIG. 7 and illustrates an example of a data format for a still image map.

FIG. 9 is a map of FIG. 7 illustrating an example of a data format of a post-record audio map used in a post-record audio data management method of a rewritable recording medium according to the present invention; FIG.

FIG. 10 is a conceptual view illustrating an embodiment of a still image map and a post-record audio map management method in a method of managing post-record audio data of a rewritable recording medium according to the present invention; FIG.

11 is a block diagram of an apparatus in which a method of managing audio recording data of a rewritable recording medium according to the present invention is implemented.

12 is a flowchart illustrating an embodiment of a method for managing audio recording data of a rewritable recording medium according to the present invention.

※ Explanation of code for main part of drawing

10: optical pickup 20: analog signal processing unit

30: digital signal processing unit 40: A / V processing unit

50: control unit M1 to M3: memory

According to an embodiment of the present invention, a method for managing audio recording data of a rewritable recording medium is provided. Stage 1; And a second step of recording information indicating that the late rock audio has been alternately recorded with respect to the later rock audio previously recorded in association with the recorded image before the first step.

According to the method for managing the audio recording data of a rewritable recording medium according to the present invention as described above, recording the audio recording of the recording video, and the recorded recording audio from the recording information for the recording image By confirming whether or not, the recorded information of the prerecorded audio recording is to indicate that the preliminary recording audio of the recorded video is recorded.

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

FIG. 5 is a diagram showing the structure of a still picture AV file information table S_AVFIT that can be employed in the method for managing the audio recording data of a rewritable recording medium according to the present invention.

As shown in the figure, the still image AV file information table S_AVFIT includes a still image AV file information table information area S_AVFITI, in which information about a still image AV file information table, is recorded, and a still image AV file information. The still image AV file information areas (S_AVFI # 1, ...) are recorded, and the still image AV file information area (S_AVFI # i) is a still image AV file general information area (S_AVFGI), and a plurality of still image bobbin areas. (S_VOBI # 1 to S_VOBI # n).

The still image bobbin area S_VOBI # i includes a still image bob general information area S_VOBIGI, a still image bob stream information area S_VOB_STI, and an AV map area. For example, as shown in FIG. 6, the bob recognition code (VOB_ID), the start address of the bob (VOB_S_ADR), the number of video parts (V_Part_Ns), the number of valid video parts (Avail_V_Ns), the number of post-record audios (AR_Aud_Ns), The first recording time (VOB_F_REC_TM) of the bob, and the last recording time (VOB_L_REC_TM) of the bob.

The bobbin identification code (VOB_ID) should not be the same in the still picture AV file, and the start address of the bob (VOB_S_ADR) is a relative address in the still picture AV file measured in sector units and the start address of the AV data of the bob. to be. The number of video parts (still images) (V_Part_Ns) and the number of post-record audios (AR_Aud_Ns) are the number of video parts (still images) and post-recording audios grouped with the corresponding bob, and the maximum allowable for each of them. It is preferable that the number defines 64, for example, or the maximum allowable number is 64 as the sum of these numbers. The number of effective video parts (Avail_V_Ns) is the number of video parts (still images) not deleted in the corresponding bob.

FIG. 7 is a conceptual diagram showing the structure of the AV map shown in FIG. 5, which is divided into a plurality of maps MAP # 1, MAP # 2, ... MAP # n, and the maps MAP # 1, MAP # 2, ... MAP # n) are classified into two types, one of which is a map having recording information on still images with or without original audio (hereinafter referred to as "still image map"), The other is a map having recording information on the post-record audio data (hereinafter referred to as "post-record audio map").

In the AV map, one map (MAP # 1, MAP # 2, ... MAP # n) is assigned to each of the still image or the post-record audio data of the corresponding bob (still image / audio collection), and the map (MAP) is assigned. # 1, MAP # 2, ... MAP # n) records information on corresponding still image or post-record audio data, respectively.

FIG. 8 is a diagram illustrating an example of a data format of the still image map shown in FIG. 5 that may be employed in a method of managing audio recording data of a rewritable recording medium according to the present invention.

As shown in the figure, the map type information MAP_TY is for indicating the type as to whether the map includes the original audio data or the map without the original audio data, and the audio recording information AR_EXIST stops. It is for indicating whether or not a recording audio for a video is recorded. The temporary deletion information (TE) is for indicating a temporary deletion state of the still image (video part). Here, the temporary deletion information (TE) can be used for the purpose of deleting all the still images from the recording medium without deleting the still images every time one still image is deleted.

The audio reproduction specifying information A_DEFAULT is for specifying audio data to be reproduced. That is, it is preferable that the audio reproduction specifying information A_DEFAULT is set to 1 bit so as to be set to "0" when reproducing the original audio data and to "1" when reproducing the audio recording data.

In addition, the video part recognition code (V_PART_ID) indicates a recognition code for the video part of the still image, and the post-record audio bob recognition code (AR_VOB_ID) recognizes a bob in which the post-record audio data for the corresponding still image is grouped. The code indicates the code, and the AR-ID indicates the recognition code of the pre-recorded audio data for the corresponding still picture, and the video part size (V_PART_SZ) and the audio part size (A_PART_SZ) correspond to the still picture. The size of the video part and the audio part is displayed, and the number of audio frames A_F_Ns indicates the number of audio frames for the audio part of the corresponding still image.

FIG. 9 is a diagram illustrating an example of a data format of a post-record audio map shown in FIG. 5, which may be employed in a post-record audio data management method of a rewritable recording medium according to the present invention.

As shown in the figure, the map type information MAP_TY is for indicating the type of map, and the overwrite information OV_WR is the last one when a plurality of reviews audio data is recorded for one still image. It is for distinguishing the audio data from the previous rock audio data, and is indicated by "0" in the last rock audio map and "1" in the previous rock audio map. In this case, the overwrite information OV_WR does not delete previously recorded audio data for each still image, but deletes them collectively later. It can be used for marking purposes.

The audio recording code AR_ID indicates an identification code of audio recording data for the still image, and the audio recording size AR_PART_SZ indicates the size of the audio recording data. (A_F_Ns) indicates the number of audio frames for the corresponding post-record audio data.

FIG. 10 is a conceptual diagram illustrating a method of managing still image maps and post-record audio maps in the method of managing post-record audio data of a rewritable recording medium according to the present invention.

In the figure, the original program chain (original PGC) includes a plurality of movie cells (Cell # 1, Cell # 5, Cell # N) in which playback order information for a movie is recorded, and playback for still images. Still image cells (still Cells) in which the order information is recorded are composed of cells shaded in the drawing, that is, Cell # 2, Cell # 3, Cell # 4, and Cell # 6. Video OBject Information (Still Image / Audio Record Set Playback Information) is information for reproducing a VOB (Still Picture / Audio Record Set) and includes a plurality of SBs (S_VOBI # 1, S_VOBI # 2, S_VOBI #). 3, ...), and the bobbins are formed one by one corresponding to the one stop cell. The still image bob management program (RTRW_STL.VOB) is a program for managing still images in the unit of a bob, and is composed of a plurality of bobs (S_VOB # 1, S_VOB # 2, S_VOB # 3, ...). It is formed one by one corresponding to the one bobbin. The bob has information on still images Vi having the same properties and original audio Ai associated therewith, and a post-generation generated when the audio data of a previously recorded still image is recorded later. Information on the recording audio data Ai 'is also recorded.

Next, a description will be given of the generation process of the bob, the bobbin and the cell at the time of recording.

To record audio data at the same time when shooting still images, still images and original audio data such as "V1, A1", "V2, A2", "V5, A5", "V6, A6", "V9, A9" Is recorded continuously, and when shooting still images without audio recording, only the still images are recorded, such as V3, V4, and V7. When post audio recording is performed, the V2, V1, V6, V3, V8, V5, V7 Audio recording audio is recorded at the recording position, such as the audio recording audio (A2 ', A1', A6 ', A3', A8 ', A5', A7 '). In this way, when the attributes of the still image change during recording of the still image, or when the maximum allowable number of still images is exceeded, new bobs, bobbins, and cells are generated. In addition, the shaded bobs (S_VOB # 3), bobbins (S_VOBI # 3), and cells (Cell # 4) in FIG. 10 are V3, V8, when the previous bobs (S_VOB # 3) exceed the allowable number of still images. It is generated when the post-record audio (A3 ', A8', A5 ', A7') for V5 and V7 occurs.

First, the still images V1 and A1 are recorded at the same time as the video part V1 and the audio part A1 at the time of shooting. The general information S_VOBIGI for the bobbin S_VOBI # 1 as shown in FIG. 6 is recorded. A table is generated, and a still image map table as shown in FIG. 8 is generated. Thereafter, the still image map table of FIG. 8 is generated for still images V2 and A2 as described above, and subsequent still images V3 and V4 are recorded only with video parts, but the still image map table of FIG. Is generated.

If the property of the still image V5 recorded thereafter is changed or the number of allowable still images of the current bob S_VOB # 1 is exceeded, the grouping of the current bob S_VOB # 1 is terminated and the bobbin S_VOBI # 1 ) And the cell (Cell # 2), and then create a new bob (S_VOB # 2), the bobbin (S_VOBI # 2) and the cell (Cell # 3).

Subsequently, the still image map table V5, A5 (V6, A6) to be recorded is similarly generated.

Subsequently, when a post-recording audio A2 'for the still image V2 is recorded by the user, the bobbin S_VOBI # 1 in which the playback information for the bob S_VOB # 1 to which the still image V2 belongs is recorded. ), The number of post-record audios AR_Aud_Ns is updated to "1" in the bob general information (S_VOBIGI) table as shown in FIG. In addition, in the AV map table as shown in FIG. 8, the still picture V2 is updated with "1", and the audio reproduction specifying information (A_DEFAULT) is set to "1" from "0". ", And the recognition code of the bob S_VOB # 2 is recorded as the post rock audio recognition code AR_VOB_ID, and the recognition code of the reviews rock audio A2 'is recorded as the post rock audio recognition code AR_ID. do. In addition, a post-record audio map table as shown in FIG. 9 is generated for the post-record audio A2 ', " 0 " is recorded as overwrite information OV_WR, and the post-record audio recognition code AR_ID. As a recognition code of the late rock audio (A2 ') is recorded, the size of the late rock audio (A2') is recorded as a late rock audio size (AR_PART_SZ), and as the number of audio frames (A_F_Ns) The number of frames of A2 ') is recorded. Here, "0" is recorded as the overwrite information OV_WR because it is the only audio recorded for the still image V2.

In the same manner, subsequent still and post-record audio data V7, V8, A1 ', "V9, A9", A6', A3 ', A8', A5 ', A7', V10, "V11, A11" &Quot;, V12 " is recorded, and after the user reviews the audio recording A2 for the still image V2 again, the still image map as shown in FIG. 8 for the still image V2 is recorded. In the table, the audio recording audio recognition code AR_VOB_ID is updated with the recognition code of the bob S_VOB # 4, and the audio recording audio recognition code AR_ID is updated with the recognition code of the audio recording A2 ".

Then, the overwrite information OV_WR is updated from " 0 " to " 1 " in the post-record audio map table as shown in FIG. 9 for the post-record audio A2 '. The reason why the overwrite information OV_WR is updated to "1" is because audio is recorded again for the still image V2. In addition, a post-record audio map table as shown in Fig. 9 is generated for the post-record audio A2 ", and overwrite information OV_WR is recorded as " 0 ", and the post-record audio A2 " The recognition code AR_ID, the size AR_PART_SZ of the post-record audio A2 ', and the number of frames A_F_Ns of the post-record audio A2' are recorded. Here, "0" is used as the overwrite information OV_WR. Is recorded because it is the final recorded audio for the still image V2.

In the state where the still image and the post-record audio are recorded as described above, the post-record audio A2 ″ is reproduced together with the reproduction of the still image V2 when the user requests the reproduction of the still image V2. The overwrite audio A2 'in which the overwrite information OV_WR is recorded as "1" is not deleted from the recording medium at the time of overwriting of the overwrite audio, but is overwritten if there is a batch delete command of the system later. The write information OV_WR is deleted along with the other record audios recorded with " 1 ".

FIG. 11 shows a configuration of a recording / player of a recording medium for recording a signal on an optical disc recording medium and reproducing the recording signal, wherein the recording / reproducing device of FIG. 11 is rewritable according to the present invention. It is possible to apply the audio data management method of the recording medium.

First, referring to the configuration of FIG. 11, the optical pickup 10 records a signal on the optical recording medium OD and detects the signal therefrom; An analog signal processor 20 for transforming reproduction high frequency signals into digital data to convert the data to be recorded into analog data; A digital signal processor (30) for outputting a control signal to the optical pickup (10) according to the decomposition and synthesis of digital data, ECC block coding and decoding, and the decoding result of the data; An A / V processor 40 for decoding and outputting the input audio / video data (hereinafter referred to as 'A / V data') and encoding the input audio / video signal into A / V data; A controller 50 for controlling the component according to navigation data and a user request for reproducing a signal; And a plurality of memories M1, M2, and M3 for temporarily storing data generated in each signal processing process.

The memory M1 includes an FMP area storing a file management program and an FMT area storing a file management table FMT, and the file management table FMT includes a bobbin table, a cell information table, and a still image map. A table and a follow-up audio map are included.

In the apparatus of FIG. 11, when the review recording audio is recorded on the recording medium, the controller 50 controls to record the review recording audio on the recording medium OD, and the map table of the still image to which the review recording audio belongs. Data (post-record audio presence information (AR_EXIST), post-record audio bob recognition code (AR_VOB_ID), post-record audio recognition code (AR_ID) and the like; 8], and a map table as shown in FIG. 9 is generated for the recorded post-record audio, and the overwrite information OV_WR is set to " 0 ". In addition, the controller 50 checks whether the previous recording audio has been previously recorded with respect to the recorded still picture audio associated with the recorded last recording audio, and checks whether the existing recording audio is present in the still table audio table information AR_EXIST. The overwrite audio map (AR_VOB_ID) and the review lock audio recognition code (AR_ID) are used to control the overwrite information OV_WR to be reset to "1". Thereafter, the controller 50 controls to delete the late-lock audio in which the overwrite information OV_WR is set to "1" according to a user's request or a command set in the system.

Next, an embodiment of a method for managing audio recording data of a rewritable recording medium according to the present invention will be described in detail with reference to the flowchart of FIG.

First, when the recording mode is set by the user, the controller 50 checks this and performs recording control of data (step S11). Subsequently, the controller 50 checks whether the currently input data is audio recording data (step S12).

As a result of the checking in step S12, in the case of the post-record audio data, the control unit 50 uses the file management program stored in the FMP area to record the inputted post-record audio in the bobbin table of the file management table FMT stored in the FMT area. The still image map (refer to FIG. 8) associated with the data is searched (step S13), and it is checked whether the previous recording audio is recorded previously from the reviewed audio presence information AR_EXIST of the searched map table (step S14). .

As a result of checking in said step S14, when it does not exist, the control part 50 advances to step S17 mentioned later. On the other hand, as a result of checking in step S12, if present, the controller 50 uses the audio bob recognition code (AR_VOB_ID) and the post-record audio recognition code (AR_ID) recorded in the still image map table to check the post-record audio map. Reset the overwrite information (OV_WR) to "1" (temporarily delete display) by top color (step S15), and then record the audio recording code (AR_VOB_ID) and the recording audio recognition code (AR_VOB_ID) recorded in the still image map table. AR_ID) and the like are updated with data for newly recorded post-record audio (step S16).

Subsequently, the controller 50 generates a post-record audio map as shown in FIG. 9 with respect to the recorded post-record audio, and sets the overwrite information OV_WR to "0". Thereafter, the controller 50 proceeds to step S18 to check whether the data recording mode is terminated by the user, and when finished, records the file management table FMT stored in the memory M1 on the recording medium ( Step S19) While the control operation ends, if not finished, the control section 50 proceeds to step S11 described above and performs a write operation of the next input data.

On the other hand, if the result of the check in step S12 is not the audio recording data (that is, the still image), the controller 50 uses the file management program stored in the FMP area to store the file management table (FMT) in the FMT area. After generating a still image map as shown in FIG. 8 with respect to the input and recorded still image in the bobbin table, the process proceeds to step S18.

In addition, the controller 50 sets the overwrite information OV_WR when the user requests or sets the automatic recording area secure mode (for example, a mode for automatically securing the recording area on the recording medium) by the system. Searching for the oldest recording audio data set to "1" (i.e., temporarily deleted), and deleting the found oldest recording audio data on the recording medium.

According to the method for managing audio recording data of a rewritable recording medium according to the present invention as described above, if there is an audio recording previously recorded for the still image when recording the audio recording for the still image, By indicating that the previous review audio has been overwritten (temporarily deleted), the overwritten review audio and the final review audio for one still image can be managed separately. In addition, the overwritten reviewed audios can be deleted at the time of a user's deletion request or a delete command of the system, which is an excellent invention for efficiently managing the reviewed audio.

Claims (4)

In the recording data management method of a rewritable recording medium, A first step of recording an audio recording of the recorded video; And And a second step of recording information indicating that the second recording audio has been alternately recorded with respect to the previous recording audio previously recorded in association with the recorded image before the first step. Way. The method of claim 1, The second step, Confirming whether the pre-recorded audio is present from the recorded information on the recorded image; And And displaying in the recording information of the prerecorded audio recording audio based on the result of the confirmation, that the preliminary recording audio of the recorded video is alternately recorded. The method of claim 1, Searching for an audio recording indicating that the replacement has been recorded; And And deleting the searched reviewed recording audio. In a rewritable recording medium, A rewritable recording medium having an area of information indicating that the later recording audio has been alternately recorded in the recording information of the later recording audio other than the last recorded audio among the recording audios for the same recorded video.