JP3833456B2 - Disc playback apparatus and disc playback method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reproducing apparatus for reproducing data from a recording medium of a DVD-Video disc and a method for reproducing data from the recording medium.
[0002]
[Prior art]
A DVD (digital versatile disc) -Video disc playback device plays back data from a single disc according to navigation commands recorded on the disc, and presents the contents to the user while respecting the will of the content provider. Accordingly, when the setting of the disc is the playback of the menu screen or the like for the first time, the playback operation may not be performed unless the user operates to select and input the playback of content such as a movie.
[0003]
This playback operation will be described with reference to the flowchart of FIG. 5 showing the operation of the conventional DVD-Video disc playback device. When playback of the disc is started (ST1), video manager information (VMGI) is acquired from the disc (ST2). Subsequently, in the DVD-Video standard, the first play program chain (FP_PGC) is executed first (ST3), whereby the menu screen is reproduced and displayed (ST4), and by the user selection (ST5), the main part is reproduced (ST5). ST6).
On the other hand, in the case of a compact disc that is the same disc medium, the content is automatically reproduced when the disc is reproduced.
[0004]
[Problems to be solved by the invention]
In particular, in a vehicle-mounted environment or the like, specifications such as a compact disc that automatically reproduces content after inserting the disc or turning on the power are suitable.
Also, in the case of a disc playback device with a changer mechanism that stores multiple discs and exchanges and plays the disc, the user's will is to automatically complete the playback of one disc without any user command to change discs. When starting playback of the next or another disc, it is extremely difficult to automatically switch to the next disc as long as playback is performed in accordance with the DVD-Video standard.
[0005]
The present invention has been made in view of the above, and in the playback of a DVD-Video disc, after the disc is inserted or the power is turned on, the content playback operation is automatically started without the user making a selection input on the menu screen. It is an object of the present invention to obtain a reproducing apparatus and a reproducing method thereof.
[0006]
[Means for Solving the Problems]
A disc playback apparatus according to the present invention reads and stores a title search pointer table in video manager information (VMGI) recorded on a disc in a disc playback apparatus for playing back a DVD-Video disc, and also formats the disc Executes the title play command based on the information in the title search pointer table stored in the storage means and means for shifting the main unit to the stop state before executing the first play program chain specified in the above. It has a means to do.
[0007]
The disc playback method according to the present invention is a disc playback method for playing back a DVD-Video disc. The title search pointer table in the video manager information (VMGI) recorded on the disc is read out and stored, and after the storage, Before the first play program chain specified in the disc format is executed, the main unit is shifted to the stop state, and then the title play pointer is stored based on the information in the title search pointer table stored in the storage means. -The command is executed.
[0008]
Furthermore, in the disc playback method for playing back a DVD-Video disc, the title search pointer table in the video manager information (VMGI) recorded on the disc is read and stored, and after storage, the first specified in the disc format is stored. Before the play program chain is executed, the main body is shifted to the stop state, and then the title play command is executed and recorded in order for the titles in the title search pointer table stored in the storage means. When the title is finished playing, the main body is stopped.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a disk reproducing apparatus according to Embodiment 1 of the present invention. FIG. 2 is a flowchart for explaining the operation of the disk reproducing apparatus. FIG. 3 is a diagram showing a logical format structure of a DVD-Video disc, showing its DISC structure and VMG structure, and FIG. 4 showing its VMGI structure and TT_SRPT structure. 3 and 4 are continuous, and A and B in FIG. 3 are connected to A and B in FIG. When the disk 1 is placed on the turntable 3 and chucked by the clamper 2, it is rotated by the spindle motor 4. Next, the data recorded on the disc 1 is read by the optical pickup 5 (ST11 in FIG. 2) and demodulated by the demodulating means 6, so that the user can enjoy images such as movies in the case of a DVD-Video disc. I can do it.
[0010]
When an image such as a movie is reproduced, information about the contents in the disc is recorded in the video manager information (VMGI) in the video manager (VMG) in the disc (DISC) (FIG. 3). In this VMGI, a title search pointer table (TT_SRPT) is recorded, and the title search pointer table records the number of titles in the content and the start point (start address) of each title. (FIG. 4). In the logical format of the DVD-Video disc, if the first play program chain (FP_PGC) exists after the VMGI reading and acquisition, it is executed, and the command described in the first play program chain is originally executed. Must be followed.
[0011]
In the present invention, information in the VMGI is acquired and analyzed by the VMGI analysis means 8 and the information in the title search pointer table is stored in the storage means 9 for the number of titles and the start address of each title (FIG. 2). ST12). Next, the player is stopped by the control means and shifted to the STOP state (ST13). The transition to the STOP state is performed before the execution of the first play program chain defined in the logical format of the DVD-Video disc described above, and the first play is performed by performing this operation (transition to the STOP state).・ The execution of the program chain can be avoided.
[0012]
Note that the transition to the STOP state may be performed when a menu display command is issued, detected by the menu state detection means 7 and confirmed to have entered the menu state.
[0013]
Next, a title play command is executed to the head of each title based on the number of titles and the head address of each title using information described in the TT-SRPT stored in the storage means 9. The Title_Play execution means 12 commands the control means 10 for controlling the DVD player, and the title is reproduced from the initialized title number (TTN = 1) (ST14) based on the head address of the title ( ST15). When the end of playback of the title is confirmed by the Title end determination means 11 (ST16), it is determined whether or not the title number (TTN) has reached the number of titles (TT_SRP_NS). (ST18). This is to avoid the case where execution of the title play command is prohibited by this stop. Subsequently, the reproduction of the next title number (TTN = TTN + 1) (ST19) is executed based on the head address of the title using the information described in the TT-SRPT stored in the storage means 9.
[0014]
When the sequential playback ends and playback for all the titles is completed with the information described in the title search pointer table (ST17), the playback of the disc is terminated and a transition is made to the STOP state (ST20). The end of reproduction for all titles is determined using the title number (TT_SRP_NS) described in the title search pointer table information in the title search pointer table.
[0015]
With such a configuration, when a DVD-Video disc is inserted into the player, the operation set by the content provider for the disc (for example, the main part is reproduced by allowing the user to select on the menu screen) It is possible to obtain a player that does not automatically perform the main content playback), but performs the operation of “automatically starts the content playback operation” similar to the case where a compact disc is inserted into the player. .
[0016]
In addition, by temporarily passing through the STOP state before the execution of the first play program chain, the above operation can be realized without being restricted by the logical format of the DVD-Video disc. In addition, all titles can be played in order, and after a single title has been played on a disc such as karaoke, the disc transitions to the menu screen and waits for user selection. However, it is possible to automatically reproduce all titles continuously.
[0017]
Embodiment 2. FIG.
Furthermore, when all the titles have been played back, it is detected and shifted to the STOP state. For example, in a so-called changer player that accommodates a plurality of discs and mechanically switches and plays them, When the title playback of the stored disc is finished, even if it is a specification to wait for the user's selection to move to the menu screen, by automatically switching the disc sequentially and applying this invention, Continuous playback is possible.
[0018]
【The invention's effect】
As described above, according to the disc playback apparatus of the present invention, in the disc playback apparatus for playing back a DVD-Video disc, the title search pointer table in the video manager information (VMGI) recorded on the disc is read and stored. In addition, based on the information of the title search pointer table stored in the storage means, means for shifting the main body to the stop state before execution of the first play program chain defined in the format of the disc, Since the means for executing the title play command is provided, the content reproduction operation can be automatically started without the user making a selection input on the menu screen after the disc is inserted or the power is turned on.
[0019]
According to the disc playback method of the present invention, in the disc playback method for playing back a DVD-Video disc, the title search pointer table in the video manager information (VMGI) recorded on the disc is read and stored, and after storage Before the first play program chain specified in the disc format is executed, the main body is shifted to the stop state, and then the title / search pointer table information stored in the storage means is used. Since the play command is executed, after the disc is inserted or the power is turned on, the content reproduction operation can be automatically started without the user making a selection input on the menu screen.
[0020]
Also, in a disc playback method for playing back a DVD-Video disc, the title search pointer table in the video manager information (VMGI) recorded on the disc is read and stored, and after storage, the first play specified in the disc format is performed.・ After moving the main unit to the stop state before executing the program chain, execute the title play command in order for the titles in the title search pointer table stored in the storage means, and the recorded titles. When playback is finished, the main unit is stopped, so that after the disc is inserted or the power is turned on, the user can automatically start the content playback operation without selecting and entering the menu screen. When it finishes playing, it will stop When a changer or the like is configured, a disk change can be performed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a disk reproducing apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a flowchart for explaining the operation of the disc reproducing apparatus according to the first embodiment.
FIG. 3 is a diagram showing a logical format structure of a DVD-Video disc, showing its DISC structure and VMG structure;
FIG. 4 is a continuation of FIG. 3 showing its VMGI structure and TT_SRPT structure.
FIG. 5 is a flowchart for explaining the operation of a conventional DVD-Video disc playback device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disc 2 Clamper 3 Turntable 4 Spindle motor 5 Optical pick-up 6 Demodulation means 7 Menu state detection means 8 VMGI analysis means 9 Storage means 10 Control means 11 Title end determination means 12 Title_Play execution means

Claims (3)

In a disc playback apparatus for playing back a DVD-Video disc, the title search pointer table in the video manager information (VMGI) recorded on the disc is read and stored, and the first play program defined in the format of the disc A disc playback apparatus comprising means for shifting the main body to a stop state before execution of the chain, and means for executing a title play command based on information in the title search pointer table stored in the storage means. In a disc playback method for playing back a DVD-Video disc, the title search pointer table in the video manager information (VMGI) recorded on the disc is read out and stored, and after storage, the first play disc defined in the format of the disc is stored. A disc playback method for executing a title play command based on information in a title search pointer table stored in the storage means after a main body is shifted to a stopped state before execution of a program chain. In a disc playback method for playing back a DVD-Video disc, a title search pointer table in video manager information (VMGI) recorded on the disc is read and stored, and after storage, a first play program defined in the disc format After moving the main unit to the stop state before the chain is executed, the title play command is executed in order for the titles in the title search pointer table stored in the storage means, and the recorded titles are reproduced. Disc playback method to stop the main unit when finished.

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