KR20060074111A - Chapter editing control method of recording title - Google Patents

Abstract

The present invention provides a method of controlling chapter editing of a recording title which enables the editing arrangement of chapters to be restored in the original order at one time even if each chapter of the recording medium is edited by a user's arbitrary operation. To this end, the present invention, when arbitrarily editing the playback order for the chapters to divide the access unit for each program of the disc according to the user's setting operation, the order of the search pointer of the cell information corresponding to each chapter is changed to play arrangement When the edited playback is performed in the order of the search pointer of the changed cell information and the playback order of the edited chapters is to be restored to the original order, each cell is referred to by referring to the order information recorded in the spare area of each cell information. By allowing the search pointer of the information to be restored in the original order, it is possible to easily restore the playback arrangement of the respective chapters in the original order despite the complicated editing state of the chapters by a user's arbitrary operation.

Chapter, Cell Information, Search Pointer, Edit, Restore

Description

CHAPTER EDITING CONTROL METHOD OF RECORDING TITLE}             

1 to 3 is a view showing the navigation information defined in the DVD VR (DVD VR) standard,

4 is a diagram showing the configuration of a DVD recorder to which the method of the present invention is applied;

5 is a diagram illustrating a structure of cell information corresponding to a chapter of navigation information according to a preferred embodiment of the present invention;

FIG. 6 is a diagram showing the structure of M_C_GI (Movie Cell General Information) shown in FIG. 5;

7 is a view showing a state in which an original number (ORI_NUM) for restoring an editing order of chapters to an original state is recorded in a reserved area of cell information according to a preferred embodiment of the present invention;

8 is a view showing a relationship with cell information corresponding to a chapter of a cell information search pointer CI_SRP;

9 is a view showing a state in which the editing order of chapters is restored to the original order with reference to the original number ORI_NUM according to a preferred embodiment of the present invention;                 

Fig. 10 is a flowchart for explaining the operation of the chapter editing control method of the recording title according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: disc, 12: audio and video input

14: MPEG encoder, 16: navigation recorder,

18: disc recording unit, 20: disc reading unit,

22: navigation reader, 24: MPEG decoder,

26: OSD generation unit, 28: video output unit,

30: Audio output part, 32: Microcomputer.

The present invention relates to a method for controlling chapter editing of a title recorded on a disc.

In general, a disc recorder capable of recording and playing back high-definition video data and high-quality audio data on a disc for a long time, for example, a DVD recorder, has been developed and commercialized. In the DVD-Recorder, The audio and video signals input from the camera are encoded into MPEG2 data according to the DVD format.

The encoded audio and video data is recorded in a data area of a disc in one program unit, and navigation information for controlling reproduction of the program is generated. Recording management is performed in the navigation information area of the disc.

On the other hand, in the DVD recorder, when data is initially recorded on the disc inserted and seated in the device, the VM recorder generates and records the navigation information 'VMG Table' or 'RTR_VMG Table' defined in the 'DVD Video' standard.

When data is already recorded on the disk, the navigation information recorded on the disk is loaded into the memory in advance, and then the navigation information is corrected / added to the newly recorded program and rewritten on the disk.                         

The DVD recorder records and manages data sections continuously recorded from the start of recording to the end of the DVD-RAM as one program. The program includes a plurality of video object units (VOBUs), which are navigation units. Video Object Units), which records and records the location information of each navigation unit in real time during program recording, and records them in TAMPI in the RTR_VMGI Table as shown in FIG.

On the other hand, in the TM_ENT (Time Difference Entry) recorded in the RTR_VMGI Table, the VOBU entry number (VOBU_ENTN), time difference (TM_DIFF), and target VOBU address (VOBU_ADDR) information are recorded and managed as shown in FIG. The target VOBU address (VOBU_ADDR) information designates an address of an arbitrary VOBU in the recorded program (or VOB), and continuously generates TM_ENT whenever the VOBU is additionally recorded by the data recording operation. The address of the newly recorded VOBU is recorded and managed.

The navigation information for controlling reproduction of the program includes program chain information (PGCI), as shown in FIG. 3, wherein cell information (CI) is recorded and recorded in the PGCI. The information CI is recorded and managed so as to correspond to chapters that separate one program (that is, one PGI) into a plurality of access units.

If the program is not separated, one cell information (CI) corresponding to one program is recorded and managed. However, if the program is divided into a plurality of chapters, the cell information is generated as many as the separated chapters. In the general DVD recorder, since the criteria for separating the chapters are not clear, the chapters are separated at regular time intervals, or after the recording operation is completed, the user directly plays the chapter at the desired position while the playback operation is performed. If the chapter is separated, the DVD recorder updates the cell information and generates additional cell information.

In the DVD recorder, when a user requests a chapter list for a specific program, the navigation information is searched and referred to, and the respective chapters are selected according to cell information in the program information (PGI). An external connection such as a television (TV) can be connected to an OSD video capable of a user interface, for example, an OSD video of a chapter list in which a number of each chapter or a corresponding thumbnail picture is displayed. The device can display a number of chapter items on a chapter list.

On the other hand, the chapters divided into a plurality of access units for each program can perform an editing operation for arbitrarily changing the playback order of chapters according to a user's selective setting operation. The order of the cell information search pointers for the corresponding programs in the navigation information is changed and recorded so that the cell information is arranged in the order of editing of each chapter.

However, in a typical DVD recorder, in order to restore each chapter to the order before editing after editing the playback order according to a user's arbitrary setting operation, the user returns each chapter to the state before editing. Since the operation must be performed, it takes a long time to recover the state before the chapter is edited, and a recovery process must be performed depending on the user's setting operation, which makes it difficult to completely recover the previous state.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to allow the editing arrangement of chapters to be restored to their original order at one time even if each chapter of the recording medium is edited by a user's arbitrary operation. It is to provide a method of controlling chapter editing of a recording title.

Another object of the present invention is to record the sequence information in the cell information corresponding to each chapter, so that at the time of recovery of the arbitrarily edited chapter, the sequence information of the cell information can be restored to the original sequence arrangement at one time. It provides a method of controlling chapter editing of a title.

In order to achieve the above object, according to the present invention, when generating chapters in a recording program, recording the order information in the first information corresponding to the chapter, and if there is a recovery request for the edited playback order of the chapter, A chapter editing control method of a recorded title is provided, comprising the step of restoring the edited reproduction order based on the order information in the first information of each chapter.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

4 is a diagram showing the configuration of a DVD recorder to which the method of the present invention is applied.

As shown in FIG. 4, the DVD recorder according to the method of the present invention includes an audio and video input unit 12 for inputting audio and video information from an external source to be recorded, and inputs the input audio and video information to a disk 10. MPEG encoder 14, which encodes and modulates in a recordable format, and the microcom 32 to control the playback order of the chapters in the navigation information of the disc 10, and to edit the original order of the edited chapters. A navigation recorder 16 for converting the navigation information for recovery, a disk recorder 15 for recording the encoded audio and video information, and a recorder for recording the navigation information on the disk 10, and a disk reader 20 A navigation reader 22 for reading the navigation information of the disc 10 read from the disc, and a disc read out from the disc reader 20. MPEG decoder 24 for decoding and demodulating audio and video information of network 10, OSD generator 26 for generating graphics and characters for displaying the chapter list of disk 10, and disk 10 A video output unit 28 for outputting video information read out from the display device to a display device such as an external television or monitor, and an audio output unit 30 for outputting an audio signal read out from the disc 10 to the speaker; For each chapter that divides the program-specific access units of the disc 10, editing is performed to change the playback order according to a user's arbitrary operation, and the edited chapters are restored to the original arrangement order. And a microcomputer 32 for controlling the navigation conversion in 16).

The microcomputer 32 inputs a user's user key in a state in which an original number according to the original order of each cell information is recorded in a reserved area of each cell information in the navigation information of the disk 10. According to the editing operation of the chapter by changing the arrangement order of the cell information search pointer (Cell Information Search Pointer) corresponding to each chapter corresponding to the editing state, and transfer the edited chapters by the user's user key operation If there is a key input for restoring in the order of, the search pointer of the cell information whose arrangement order has been changed to the editing state is restored with reference to the order of the original order recorded in the spare area of each cell information. .

In addition, since the order of the chapters in one program is determined according to the recording position of the cell information search pointer, the microcomputer 32 changes the order of the chapters accordingly.

Next, Fig. 10 is a flowchart for explaining the operation of the chapter editing control method of the recording title according to the present invention.

Hereinafter, a flowchart according to an embodiment of the present invention shown in FIG. 10 will be described in detail in parallel with the operation of the apparatus of FIG. 4.                     

First, when the disk 10 is mounted (step S10), the navigation reader 22 reads the navigation information read from the disk reader 20 (step S11), and the navigation information ends from the start of recording. The data recorded so far is recorded and managed in a program unit, and the program is composed of video object units (VOBUs) which are a plurality of navigation units. The navigation information includes a Real-Time Recording Video Manager (RTR_VMG).

As shown in FIG. 5, UD_PGCIT (user defined PGC information table) is recorded and managed in the RTR_VMG, and UD_PGCI # 1 to #n (user defined PGC information # 1 to #n) which is a plurality of program chain information in UD_PGCIT. Each UD_PGCI includes a plurality of program information (PGI), which refers to one or more cell information search pointers (ie, corresponding to cell information) underneath. The cell information CI has information corresponding to chapters that divide one program into a plurality of access units, respectively.

Each cell information (Movie Cell Information (M_CI)) includes Movie Cell General Information (M_C_GI) and a plurality of M_C_EPI # 1 to #n (Movie Cell Entry Information # 1 to #n).

As shown in FIG. 6, M_C_GI is a reserved area of 1 byte, 1 byte of C_TY (Cell Type), 2 bytes of M_VOBI_SRPN (M_VOBI Search Pointer Number), and 2 bytes of C_EPI_Ns ( Number of C_EPIs), 6 bytes of C_V_S_PTM (Video Start PTM of this Cell), and 6 bytes of C_V_E_PTM (Video End PTM of this Cell), which specify the corresponding data recording interval, are recorded and managed. Hide) can be recorded in the C_TY.

In the spare area of the M_C_GI, an ORI_NUM (Original Number) indicating an original arrangement order of each cell information CI # 1 to #n is allocated and managed as shown in FIG. 7 according to the present invention. In 32), when the first chapter is divided, the navigation generation unit 16 records the order in the ORI_NUM field of M_C_GI of each cell information so that the arrangement order of chapters can be referred to after editing.

In that state, one user-PGC is selected on the disk 10 by a user's user key operation, one program in the PGC is selected, and key input for editing the playback order of each chapter is made. It is judged whether or not (step S12), if the user key input for editing the chapter is not made, the normal function of the DVD recorder is performed (step S13).

However, if it is determined that a user key operation for editing the playback order of each chapter for the selected program is performed, the search pointer of the cell information corresponding to the chapter whose order is changed by the user is changed in order to play each chapter. The arrangement is made to be arbitrarily edited (step S14), as shown in FIG. 8, for example, four cell information search pointers CI_SRP # 1 to # 4 for one program (each cell information CI # 1 to # 1). # 4), if the playback order of the chapter corresponding to the cell information is to be changed to Ch # 1-> Ch # 3-> Ch # 4> Ch # 2, The recording position is changed so that the search pointer CI_SRP is arranged in the order of CI_SRP # 1-> CI_SRP # 3-> CI_SRP # 4-> CI_SRP # 2.

In that state, if there is an input of a user key for playing the edited program of the chapters (YES in step S15), it is played back according to the edited arrangement of each CI_SRP corresponding to each chapter. Data of the corresponding section is reproduced in the order of Ch # 1-> Ch # 3-> Ch # 4> Ch # 2 (901 in FIG. 9) (step S16).

Then, the microcomputer 32 determines whether there is a key input for recovering the chapters whose playback order has been edited in the program in the original order again by the user's user key operation (step S17). If it is determined that there is a user key input for restoring the chapters in the original order, as shown in FIG. 9, a reserved area of M_C_GI of the cell information (CI # 1 to # 4) corresponding to the respective chapters is shown. The sequence order of CI_SRP # 1 to # 4 is restored to the original order by referring to the sequence information of each ORI_NUM recorded in (step S18).

In more detail, the cell information search pointers of the cell information search pointers referenced by the program information (PGI) corresponding to the corresponding program are sequentially examined, and the cell information search whose 'ORG_NUM' field of the cell information referred to by the cell information search pointer is '1'. The pointer is found and placed at the head of the cell information search pointer recording space. In order to prevent the existing cell information search pointer from being overwritten, the above operation is performed by copying the cell information search pointers in the temporary memory area.

Next, the cell information search pointer referring to the cell information whose 'ORG_NUM' field is '2' is found and moved to the second position. In the same manner, the cell information search pointers that refer to cell information having 'ORG_NUM' of 3, 4, 5, ... are sequentially moved. According to this operation, as illustrated in 902 of FIG. 9, the cell information search pointer is restored to its original position, that is, the position illustrated in FIG. 8. By recovering the cell information search pointers thus restored from the temporary memory area to the corresponding area in the original navigation information, the chapter order recovery is terminated.

Since the chapter is determined according to the order of the cell information search pointer, the chapter is restored to its original state by recovering the order of the cell information search pointer.

On the other hand, the present invention is not limited to the above-described typical preferred embodiments, but can be carried out in various ways without departing from the gist of the present invention, various modifications, alterations, substitutions or additions are common in the art Those who have knowledge will easily understand. If such improvement, change, substitution or addition is carried out within the scope of the appended claims, the technical spirit should also be regarded as belonging to the present invention.

According to the present invention as described above, when the playback order for chapters for dividing the access units for each program of the disc is arbitrarily edited according to the user's setting operation, the order of the search pointers of the cell information corresponding to the chapters is adjusted. In order to make the edited playback in the order of the search pointer of the changed cell information by changing the playback arrangement, and to restore the playback order of the edited chapter in the original order, refer to the order information recorded in the spare area of each cell information. Since the search pointer of each cell information can be restored in the original order, the playback arrangement of the chapters can be easily recovered in the original order despite the complicated editing state of the chapters by user's arbitrary operation. do.

Claims (4)

A first step of recording the order information in the first information corresponding to the chapter when the chapters in the recording program are generated; And a second step of restoring the edited playback order based on the order information in the first information of each chapter, if there is a recovery request for the edited playback order of the chapter. . The method of claim 1, The second step is a chapter editing control method of a recording title, characterized in that for changing the arrangement order of the cell information search pointer (Cell Information Search Pointer) corresponding to each chapter to restore the playback order of chapters. The method of claim 2, And in the first step, the first information is configured to record order information according to the original order of each cell information in a table information area of cell information corresponding to each chapter. The method according to any one of claims 1 to 3, In the second step, the chapter editing control method of the recording title, wherein the arrangement order of the search pointers of the cell information is restored in the original order with reference to the order information recorded in the table information area of the cell information. .

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