KR100595083B1 - Post-recording audio data management method of rewritable recording media - Google Patents

Abstract

The present invention provides a method of managing post-recorded audio data for integrating and managing still picture and original audio data and post-recorded audio data linked thereto in a rewritable recording medium. It is about. A post-recording audio data management method according to the present invention includes a recording data management method of a recording medium; A first step of confirming whether a post-record audio exists in the corresponding record set requested to be deleted when the still image / audio record set is requested to be deleted; And a second step of deleting the reproduction order information of the still image / audio recording assembly corresponding to the requested still image / audio recording assembly according to the result of the confirmation, thereby making the still image data and the post-recorded audio data. It is an excellent invention that can simplify the structure of the file system manager because it can be recorded and deleted by integrated management into a single file.

Description

Post-recorded audio data management

The present invention relates to a post-recording audio data management method for integrated management of still pictures, original audio data and post-recorded audio data linked thereto in a rewritable recording medium. It is about.

Optical discs have become more common as CDs have become widespread, and the standard of DVDs (Digital Versatile Discs) is 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 are proposed. It is becoming.

Here, since rewritable DVD-RAM, DVD-RTRW, etc. are large-capacity recording media, users can use them for recording various moving pictures or still pictures. When the data is recorded, information for later indexing and reproducing is generated together with the recording of the image 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) information field (S_BOBI # i) and the cell information field (Cell # i) are as described above. Each time one dynamic image or a still image is recorded, it is generated and inserted into the reproduction control information file. The generated reproduction control information file is read at the time of reproduction and the contents thereof are all stored in the memory, and then the stored memory By using the playback control information of the image or the still image corresponding to the item to be requested to be retrieved from the recording medium and reproduced.

However, when a still image having a small size is recorded on a recording medium instead of a dynamic image having a large capacity, a large 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 each time recording of one still image (or audio data recorded in association with it) is shown in FIG. 1. 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 fix a property of an image (e.g., image size, resolution, audio quality, etc.), take a plurality of still images, and then change the property. Focusing on the tendency to change, a method of grouping according to the property of the still image and the maximum number of still images is proposed.

That is, in this method, when recording still images, the playback control information and index information are not generated for each still image, and as shown in FIG. According to the identity of the audio attribute associated with the still image, a plurality of still images share control information for the reproduction, and group and record the index information of the still image in association with the shared reproduction control information (ie, the same attribute). The location information for indexing each still image having the same information is grouped and recorded in association with the shared playback information), thereby reducing the amount of playback control information and index information generated by recording a large number of still images on a large-capacity recording medium. In addition, a number of still images can be accessed and reproduced by a small resource of the device.

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 scheme, 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_BOBI # i) and the original recording are linked. The recorded information about the 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.

However, the still image may be recorded using the above-described method, and then audio data may be recorded to generate post-recorded audio connected to the still image or to change existing audio. Hereinafter, original audio data recorded in association with a still image at the time of initial recording will be referred to as "audio," and audio data recorded after recording of the still image will be referred to as after-recorded audio. do.

When the still image associated with the post-recording audio is not located in the same bob (i.e., after the recording of the still image exceeds the number of other still images recorded and grouped in the bob, the still image recorded thereafter is If post-recorded audio is generated in this state, the still image and audio should be deleted when the bob including the post-recorded audio is deleted, but the post-recorded audio is not associated with the deleted bob. So it should not be deleted. Therefore, a bob having only post-recorded audio can be generated, which makes the existence of the corresponding cell (still image / audio recording set reproduction order information) meaningless. This is because information for reproducing a still image is recorded in a cell, because a cell without a still image is meaningless.

In case such a situation occurs, as shown in FIG. 4, an original AV management file for managing still images V generated at the first shooting and audio A interlocked therewith, By separately generating post-recording audio management files for managing recorded audio A ', individual management methods for managing still images V and audio A and post-recorded audio A' can be considered. However, the above-described individual management method has a problem in that a file system manager becomes complicated because two files must be managed at the same time. Therefore, there is a demand for development of a method of managing still images V and audio A and post-recorded audio A 'as one file.

Therefore, the present invention was created to solve the above problems, and in recording still images on a rewritable recording medium, the still image and audio data and post-recorded audio data are integrated and managed as one management file. It is an object of the present invention to provide a post-recording audio data management method capable of performing deletion.

Post-recording audio data management method according to the present invention for achieving the above object, in the recording data management method of the recording medium, when the deletion request of the still image / audio recording set, the post-recorded recording set A first step of confirming whether recorded audio exists; And a second step of selecting and deleting the still image / audio data in the still image / audio recording assembly requested to be deleted and the playback sequence information corresponding to the deletion result, if present.

In addition, the post-recording audio data management method according to the present invention, in the recording data management method of the recording medium, when the deletion request of the still image / audio recording assembly, the still image / audio data in the corresponding recording collection is requested to be deleted; Doing; Deleting reviewed audio data associated with the deleted data; Checking whether there is any record data remaining in the still image / audio recording assembly to which the deleted commentary audio belongs; And reducing the number of total still image / audio recording aggregates recorded on the recording medium, if remaining.

Hereinafter, preferred embodiments of the post audio data management method according to the present invention will be described in detail with reference to the accompanying drawings.

5 to 9 illustrate still image AV file information tables, still image AV file information, and still image bobbin (VOBI; still image / audio recording medium playback information) that can be employed in the method of managing post-recorded audio data according to the present invention. It is a figure which shows a structure.

As shown in Figs. 5 and 6, 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. It consists of still image AV file information areas S_AVFI # 1, ... in which file information is recorded, and said 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 images. Image baud areas S_VOBI # 1 to S_VOBI # n.

As shown in Fig. 7, the still picture AV file general information area S_AVFGI includes the number (S_VOBI_Ns) of the bobs (still image / audio recording aggregate), and the bob's recognition codes (VOB_ID # 1, VOB_ID # 2). , VOB_ID # 3, ...) and the size of each bobbin (VOBI_SZ # 1, VOBI_SZ # 2, VOBI_SZ # 3, ...).

The still image bobbin region S_VOBI # i includes a still image bob general information region S_VOBIGI, a still image bob stream information region S_VOB_STI, and an AV map region, as shown in FIG. As shown in FIG. 9, the general information area S_VOBIGI includes a bob identification code (VOB_ID), a start address of the bob (VOB_S_ADR), a number of video parts (V_Part_Ns), a number of valid video parts (Avail_V_Ns), and post-recording audio. Number AR_Aud_Ns, the first recording time of the bob (VOB_F_REC_TM), and the last recording time of the bob (VOB_L_REC_TM).

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-recorded audio (AR_Aud_Ns) are the number of video parts (still images) and post-recorded audio 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. 10 is a conceptual diagram illustrating an embodiment of a still picture index information structure for explaining a method of managing post-recorded audio data according to the present invention.

In the figure, the original program chain (original PGC) includes a plurality of movie cells (Cell # 1, Cell # 4, Cell # N) in which playback control data for a movie is recorded, and playback for still images. It consists of a still cell in which the order information is recorded (cells shaded in the drawing, that is, Cell # 2, Cell # 3, Cell # 5). Video OBject information is information for reproducing a VOB (still image / audio recording assembly), and includes a plurality of bobbins (S_VOBI # 1, S_VOBI # 2, S_VOBI # 3, ...). 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 recorded information about still images Vi and audio Ai associated with the same property, and post-recorded audio generated when the audio of a previously recorded still image is recorded later. Information on (Ai ') is also recorded.

Next, a description will be given of the generation process of the bobbin (S_VOBI # 3) and the bob (S_VOB # 3) without the corresponding cell (still image / audio recording set reproduction order information).

If you record audio data at the same time when shooting a still image, the still image and audio data are displayed as "V1, A1", "V2, A2", "V5, A5", "V6, A6", "V9, A9". When recording still images without recording audio continuously, only still images are recorded, such as V3, V4, and V7. When post audio recording is performed, the V2, V1, V6, V3, V8, V5, V7 Post-recording audio is recorded at the recording position, such as post-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 the drawing, the shaded bobbin (S_VOBI # 3) and the bob (S_VOB # 3) do not have corresponding cells. These bobbins and the bobbin are V3 when the previous bob (S_VOB # 3) exceeds the number of still images. Generated when post-recorded audio (A3 ', A8', A5 ', A7') occurs for V8, V5, and V7, or at least one still image (not shown) and post-recorded audio (A3 ') , A8 ', A5', A7 ') deletes the bob S_VOB # 3 while the bob S3 is recorded in one bob S_VOB # 3. It can be created as it remains. Here, when the bob is deleted, the corresponding cell is automatically deleted because the playback order information for the still image / audio recording assembly is recorded.

Next, the still image Vi, the audio Ai and the post-recorded audio Ai 'are recorded by the above process, and accordingly, the BOB, BOVI, and Cell are recorded. A process of deleting the second bob S_VOB # 2 as an embodiment of the method of deleting the bob in the state of being created and recorded as shown in FIG. 10 will be described.

Since the bob S_VOB # 2 has post-recorded audio A2'.A1 ', the attribute of the bob S_VOB # 2 is first changed from a normal still picture bob to a hidden still picture bob. Here, the normal still image bob is a still image, and means a bob having a corresponding cell. The hidden still image bob means a bob having no still image, i.e., only post-recorded audio, and having no corresponding cell.

Thereafter, the still images V5, V6, V7, V8, and V9 present in the bob S_VOB # 2 and the audio A5, A6, and A9 linked thereto, and the original map of the bob S_VOB # 2. The post-recorded audio (A6 ', A8', A5 ', A7' present in S_VOB # 3 in FIG. 10) indicated by is deleted.

Subsequently, the deleted sizes of the deleted still images V5, V6, V7, V8 and V9, the original audio A5, A6 and A9 and the post-recorded audio A6 ', A8', A5 'and A7' are determined. In consideration, the start address VOB_S_ADR of the bobs S_VOB # 3, S_VOB # 4, ... following the deleted bob S_VOB # 2 is changed. At this time, the cell Cell # 3 corresponding to the bob S_VOB # 2 is automatically deleted. Here, in the case of using the size of each bob S_VOB # i as the bob address instead of the starting address of the bobs (VOB_S_ADR), the calculation for updating the starting addresses of the bobs following the deleted bob as described above is unnecessary. However, the load of the host may increase when the recording medium is normally played back.

When the bob S_VOB # 2 is deleted as described above, as shown in FIG. 11, the bob S_VOB # 2 becomes a hidden bob having only post-recorded audio A2 'and A1', and the hidden bob S_VOB # 3 is Only post-recording audio A3 'remains.

Next, another embodiment of the process of deleting the first bob S_VOB # 1 as another embodiment of the method of deleting the bob while the bob is generated and recorded as shown in FIG. 10 will be described with reference to FIG. 10. do.

Since the bob S_VOB # 1 does not have post-recorded audio, the bobbin S_VOBI # 1 and the bob S_VOB # 1 can be deleted without any limitation. That is, the still images V1, V2, V3, and V4 present in the bob S_VOB # 1, the audio A1, A2 and A3 linked thereto, and the original map of the bob S_VOB # 1 are indicated. The post-recording audio (A2 ', A1' of S_VOB # 2 and A3 'of S_VOB # 2 in FIG. 10) is deleted.

Subsequently, the deleted still images V1, V2, V3, V4, original audio A1, A2, A3, and post-recorded audio A2 ', A1', A3 'are considered in consideration of the deleted sizes. The start addresses (VOB_S_ADR) of the bobs (S_VOB # 2, S_VOB # 3, S_VOB # 4, ... in Fig. 10) following the changed bob S_VOB # 1 are changed. At this time, the cell Cell # 2 corresponding to the bob S_VOB # 1 is automatically deleted.

Then, since the bob S_VOB # 1 has been deleted, the corresponding bob numbers and identification codes of the bobs S_VOB # 2, S_VOB # 3, S_VOB # 4, ... following the bob S_VOB # 1 are sequentially listed. You may modify it accordingly. That is, as shown in FIG. 12, the S_VOB # 2, S_VOB # 3, S_VOB # 4,..., S_VOB # 2, S_VOB # 3, S_VOB # 4,... You can change it to

Next, in the post-recording audio data management method according to the present invention, another embodiment of the generation method of the bob will be described with reference to FIG.

As shown in Fig. 13, the still image data V5 to V9 of the still image, the audio data A5 to A9 linked thereto and the post-recorded audio data A2 ', After the grouping of the second bob S_VOB # 2 is completed by A1 'and A6, if the post-recorded audio data A3' of the still image V3 is recorded, this post-recorded audio data A3 ' Grouping with Bob's (S_VOB # 3) generates a bobbin (S_VOBI # 3). Thereafter, when the new still image data V10 is input, a cell Cell # 4 corresponding to the corresponding bobbin S_VOBI # 3 is generated.

In other words, in the present embodiment, when the type of the first recorded data of the bob (still image data, audio data or post-recorded audio data) is post-recorded audio data, only the bobbin is generated and then the still image data is recorded. In this case, the recording capacity of the recording medium can be effectively utilized by reducing the frequency of generation of the hidden bobbin in the above-described embodiments. This is because the maximum number of bobs that can be recorded on the recording medium is defined, and the hidden bobbins generated during recording are grouped with a bob which is significantly less than the maximum allowable number of bobs.

FIG. 14 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. 14 is a rewritable recording according to the present invention. The post-recording audio data management method of the medium can be applied.

First, referring to the configuration of FIG. 14, 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 in which a file management program is stored and an FMT area in which a file management table FMT is stored. The file management table FMT includes a bobbin table and a cell information table. .

In the apparatus of FIG. 14, when recording a still image on a recording medium, the controller 50 may check the change of the attribute of the input still image according to a user's key input, and the controller 50 may determine the attribute according to the file management program. In this conversion, the still image until the change is grouped with one bob to control recording on the recording medium OD, and a bobbin for the bob currently recorded in the FMT area is generated. At this time, the controller 50 determines the type of data (still image data, audio data, or post-recorded audio data) to generate the number of still image data, the number of post-recorded audio, and the like, and record the data in the bobbin table.

In addition, when the controller 50 deletes the recorded bob by the user's key input, the controller 50 preferentially deletes still image data and audio data included in the deleted bob and refers to the still image data. The post-recorded audio data grouped in the corresponding bobbin or another bobbin is searched for and deleted, the data for them also deleted in the bobbin table, and the corresponding cell is also deleted. In this case, if the deleted bob does not have post-recorded audio data linked to a still image of another bob, the controller 50 also deletes the corresponding bobbin, and if there is no post-recorded audio data linked to a still image of another bob. The bob is left as a hidden bob.

Next, an embodiment of the post-recording audio data management method 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 first input data is post-recorded audio data (step S12).

As a result of checking in step S12, in the case of post-recorded audio data, a new bobbin as shown in Figs. 8 and 9 is placed in the bobbin table of the file management table FMT stored in the FMT area by using a file management program stored in the FMP area. Create Thereafter, the controller 50 performs recording control in accordance with subsequent data input (step S14), and confirms whether the currently input data is post-recorded audio data (step S15).

As a result of the confirmation in step S15, in the case of post-recorded audio data, the controller 50 allows the maximum number of post-recorded audio data numbers N shown in FIG. 9 to be grouped into a predetermined set value K1; one hidden bobbin. The number of post-recorded audio data) is determined, and if small, update data such as the number of post-recorded audio data recorded in the bobbin table (step S19), and proceed to step S14 described above. The grouping of the bobes is terminated, and the grouping is performed with a new bobb at the next data input (step S20). Here, the generated bob in step S20 is a hidden bob.

On the other hand, when the result of the checking in step S15 described above is not post-recorded audio data (i.e., still image data), the control unit 50 updates the bobbin data (step S16), and selects a cell corresponding to the bob. After generating (step S17), the process proceeds to step S22.

As a result of the confirmation of step S12 described above, if it is not post-recorded audio data (i.e., still image data), the controller 50 generates a bobbin and a cell (step S21), and the controller 50 According to the data input, recording control is performed regardless of whether or not post-recording audio is performed (step S22).

Thereafter, the controller 50 checks whether the number N of still images grouped so far has reached the maximum allowable number K2 in one bob by referring to the bobbin table as shown in FIG. 9 (step S23). ). Here, in step S23, it may be checked whether the sum N of the number of still images grouped up to now and the number of post-recorded audio data has reached the maximum number K2 allowable in one bob.

As a result of the check in step S23, if it is not reached, the controller 50 updates the bobbin data (step S26) and proceeds to step S22 described above, while when it reaches the controller 50, The grouping is terminated and grouped with a new bobb at the next data input (step S25). Here, the generated bob in step S25 is a normal bob.

Next, another embodiment of the post-recording audio data management method according to the present invention will be described in detail with reference to the flowchart of FIG.

First, in the state where still images and post-recorded audio data are recorded on the recording medium by the flow of FIG. 15, the controller 50 checks whether there is a bob deletion request by the user, and if there is a bob deletion request, deletes the bob. It enters into a control operation (step S31).

Thereafter, the controller 50 checks whether the post-recorded audio data exists in the requested bob by referring to the bobbin table as shown in FIG. 9 (step S32). As a result of checking in step S32, if there is no present, the controller 50 deletes these data because only the still image data and audio data linked thereto are grouped in the deleted requested bob, and the original map of the bob. All post-recorded audio data indicated by is deleted (step S33). Thereafter, the controller 50 deletes the bobbins in which the playback information for the requested deletion bob is recorded and the cells in which the playback order information for the deleted requested bobs are not needed (step S34). Subsequently, considering the deleted sizes of the still image data, audio data and post-recorded audio data deleted in step S33, the data such as a start address and the like are updated for the subsequent bobs following the deleted bob and the requested The deletion operation of the bob is finished (step S35).

On the other hand, as a result of the checking in step S32, if present, the controller 50 checks whether there is post-recorded audio data indicated by the original map of the deleted requested bob among the post-recorded audio data (step S36). If so, all post-recorded audio data indicated by the original map of the requested deletion is deleted (step S37), and the flow advances to step S37.

On the other hand, if it is determined that the above-described step S36 does not exist, the controller 50 deletes only the still image data existing in the deletion requested bob and audio data linked thereto (step S38), and thereafter, the deletion request. Cells in which reproduction order information for the generated bobs are recorded are also not necessary, so they are deleted (step S39). Subsequently, in consideration of the deleted size of the still image data and the audio data deleted in step S38, data such as a start address and the like are updated for the subsequent bobs following the deleted bob, and the deletion operation of the requested bob is performed. It ends (step S40).

According to the post-recording audio data management method according to the present invention as described above, it is possible to perform recording and deletion by combining and managing still image data and post-recorded audio data into one file, thereby simplifying the structure of the file system manager. It is an excellent invention that can be.

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 structure of a still image index information 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 separately managing a conventional still image and original audio and post-recorded audio data;

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

FIG. 6 is a conceptual diagram showing the structure of a still image AV file information area shown in FIG. 5;

FIG. 7 shows an embodiment of the data format of the still picture AV file general information area shown in FIG. 6;

FIG. 8 is a conceptual diagram illustrating a structure of the still image bobbin region shown in FIG. 6;

FIG. 9 illustrates an embodiment of a data format of the still image bob general information area shown in FIG. 8;

10 to 12 are conceptual views illustrating an embodiment of a method for generating and deleting a bob in the post-recording audio data management method according to the present invention.

FIG. 13 is a conceptual diagram illustrating another embodiment of a method for generating a bob in the post-recording audio data management method according to the present invention; FIG.

14 is a block diagram of an apparatus in which a post-recording audio data management method according to the present invention is implemented;

15 is a flowchart of an embodiment of a post-recording audio data management method according to the present invention;

16 is a flowchart of another embodiment of a post-recording audio data management method 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

Claims (4)

In the recording data management method of a recording medium, A first step of confirming whether or not the audio recording is present in the corresponding recording set requested to be deleted when the still image / audio recording set is requested to be deleted; And And a second step of selecting and deleting the still image / audio data in the still image / audio recording assembly requested to be deleted, and the playback order information corresponding thereto, if it exists. How to manage audio data. The method of claim 1, And the second step further comprises the step of deleting the recorded data except for the late-record audio data in the corresponding record collection requested to be deleted. The method of claim 2, Deleting the record data, Deleting post-recorded audio data linked to the still image to be deleted in the recording collection requested to be deleted; Ascertaining whether audio recording data remaining in the recording set requested for deletion remains; And And if the result of the check remains, reducing the total number of still images / audio recording aggregates recorded on the recording medium. In the recording data management method of a recording medium, Deleting the still image / audio data in the corresponding recorded collection requested to be deleted when the still image / audio recording set is requested to be deleted; Deleting reviewed audio data associated with the deleted data; Checking whether there is any record data remaining in the still image / audio recording assembly to which the deleted commentary audio belongs; And And if it remains, reducing the number of all still images / audio recording aggregates recorded on the recording medium.