KR19990012011A - How to introduce the menu of DVD system - Google Patents

Abstract

A method of reproducing a menu of a DVD system for reproducing a menu screen recorded in a video manager area and a video title set among data areas of an optical disc for DVD, the method comprising: a video manager or a plurality of video title sets present on the optical disc. Detecting whether a menu exists for each of the menus, and sequentially displaying the menus if the menus exist; Repeating the first step until any one of the menus displayed in the first step is selected or all of the video managers or the menus for the plurality of video title sets present in the data area are reproduced. By providing a menu introduction method of the DVD system characterized in that the included, without the hassle of checking to obtain the desired menu screen, the desired menu screen can be obtained by only two key operations, use of the DVD system There is an effect that can improve the convenience.

Description

How to introduce the menu of DVD system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DVD system (Digital Video Disc Systen), and more particularly, to a VMGM (Video Manager Menu) existing in a VMG (Video Manager) region and a VTS (Video Title Set) region of data of an optical disc mounted in a DVD system. The present invention relates to a method of introducing a menu of a DVD system capable of informing a user of a menu of a VMG and a VTS by sequentially playing a VTSM (Video Title Set).

In general, a DVD disc is a storage medium capable of storing data equivalent to seven times the size of a CD, having the same size as a compact disc (CD) having a diameter of 12 cm and a thickness of 1.2 mm. For reference, a CD can hold 74 minutes of data, which translates into 688MB, whereas a DVD disc has the same amount of CD as the CD, depending on whether the playback side is single-sided, double-sided, single-layered or multi-layered. You can store up to 17GB in GB.

As DVD discs have such a large capacity, CDs use the MPEC-2 compression method which focuses on the image quality rather than the MPEC-1 compression method which takes the loss of image quality and concentrates on the maximum compression. It can provide a superior level of image compared to.

In addition, by allocating extra space for information including audio, subtitles, and various menus, the user can select the interactive progress function to advance the contents, multi-language subtitle processing for up to 32 languages, and Multi-language voice processing with 8-language sound tracks, digital surround provided via six speakers including front left and right, rear left and right, center and bass speakers, and multiple presets for movies. Multi-Story feature that allows users to select the story to their liking, Multi-Angle feature that allows viewers to select and view the desired angle by providing scenes shot from various angles, and rating for each scene It can be set to provide a parental control function and the like to limit the viewing.

As described above, due to various advantages, the disc for DVD is spotlighted as the next generation media, the development progress is accelerated, and is currently commercialized.

On the other hand, the above-described functions provided in the DVD system can be conveniently used by the user by selecting various menus, the user can select the desired menu using the arrow keys and the numeric keys attached to the key panel of the remote control or DVD player Could.

However, in the conventional method as described above, the contents of the menu cannot be confirmed, and there is a hassle of having to execute each menu one by one.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a user with a menu of VMGs and a plurality of VTSs sequentially located in a data area of an optical disc mounted in a DVD system. It is to provide a menu introduction method of the DVD system that can introduce the menu of VMG and VTS.

In order to achieve the above object, in the present invention, a video reproducing method of a DVD system for reproducing a menu screen recorded in a video manager area and a video title set in a data area of an optical disc for DVD, the video present on the optical disc. A first step of detecting whether a menu exists for a manager or each of the plurality of video title sets, and sequentially displaying the existing menu if the menu exists; Repeating the first step until any one of the menus displayed in the first step is selected or all of the video managers or the menus for the plurality of video title sets present in the data area are reproduced. It provides a menu introduction method of the DVD system characterized in that it comprises.

1 is a block diagram of hardware for implementing the menu introduction method of the DVD system according to the present invention;

2 is a detailed flowchart illustrating a menu introduction method of a DVD system according to the present invention;

3 is a data structure diagram showing a data structure of a VMG among data structures of an optical disc for DVD;

4 is a data structure diagram showing a data structure of a VTS in the data structure of an optical disc for DVD;

* Explanation of symbols for main parts of the drawings

100: key input unit 200: system control unit

300: DVD player 400: monitor

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing hardware for implementing a menu display method of a DVD system according to the present invention. The key input unit 100, the system control unit 200, the DVD player 300, and the monitor 400 are shown in FIG. The function of each structural member which comprises the same figure is as follows.

First, the key input unit 200 includes a menu introduction key, an introduction release key, and the like, and generates a key signal corresponding to a user's key operation so that the user can obtain the desired operation of the DVD player 300. do.

The system controller 200 controls the overall operation of the DVD player 300 based on the key signal generated by the key input unit 100 and the signal generated by each component of the DVD player 300.

The DVD player 300 performs the original function of the DVD player under the control of the system controller 100.

The monitor 400 displays the VMGMs and VTSMs that are sequentially reproduced by the operation of the DVD player 300.

Hereinafter, the menu introduction method of the DVD system implemented by the hardware composed of the above-described members is shown in a detailed flowchart in FIG. 2, with the center showing the data structure of the VMG in the data structure of the optical disc for DVD. The menu display method of the DVD system according to the present invention will be described with reference to FIG. 4, which shows the data structure of FIG. 3 and the VTS.

First, in order to help the understanding of the present invention, a brief description will be given of a section required for the present invention in the data structure of the optical disc, and then the menu display method of the DVD system according to the present invention with reference to the flowchart shown in FIG. Will be described.

First, FIG. 3 is a structural diagram of a volume space of an optical disc for DVD for explaining the structure of a VMG (Video Manager). The volume space includes a DVD-Video area. It consists of one VMG and one or more and up to 99 VTSs (Video Title Sets).

VMG is a Table Of Contents (TOC) area for all VTSs in the DVD-Video area. The VMG (VMG Information) and VMGM_VOBS (VMG Menu_Video Object Set) are composed of single files smaller than 1 gigabyte (GB) each. It is configured to include.

Here, VMGI is a kind of control data, which provides static information and user operation required to play a title, and supports VMGM_VOBS_SA (VMGM_VOBS_Start Address). In other words, it includes a VMGI_MAT (VMGI Management Table) storing the start address of VMGM_VOBS and a VTS-ATRT (VTS Atribute Table) indicating the number of all VTSs present in the DVD-Video area.

At this time, the VMGM_VOBS is a collection of VOs (Video Objects) for the VMGM, and is composed of data such as a video, an audio, or a sub-picture.

Next, Fig. 4 is a structural diagram of a volume space of an optical disc for DVD for explaining the structure of the VTS, wherein the volume space includes a DVD-Video area, and such a DVD-Video area includes one VMG. And one or more and up to 99 VTSs (Video Title Sets).

Each VTS is a collection of titles and includes VTSI (VTS Information) and VTSM_VOBS (VTS Menu_VOBS).

Here, the VTSI, like the VMGI, is configured to include VTSI_MAT (VTSI Management Table), which stores VTSM_VOBS_SA (VTSM_VOBS_Start Address), that is, the start address of VTSM_VOBS.

At this time, the VTSM_VOBS, like the VMGM_VOBS, is a collection of VOs (Video Objects) for the VTSM, and is composed of data such as a video, an audio, or a sub-picture.

In the state where the optical disc for DVD having the above-described data structure (hereinafter referred to as "disc") is mounted on the DVD player 300, the menu introduction key from the key input unit 100 is operated by a user's key operation. When the signal is generated (S 10), the generated menu introduction key signal is applied to the system controller 200.

When a menu introduction key signal is input from the key input unit 100, the system control unit 200 reads the VMGI_.MAT located in the VMG area of the data area (DVD-Video zone) of the disc mounted in the DVD player 300. The player 300 is controlled, and the DVD player 300 reads the VMGI-MAT and provides it to the system controller 200 under the control of the system controller 200. (S20) At this time, the system controller 200 ) Can recognize VMGM_VOBS_SA from the VMGI-MAT read by the DVD player 300, and the system controller 300 determines whether the VMGM-VOBS-SA is 0 (S30).

As a result of the determination in step S30, if VMGM_VOBS_SA is 0, the system controller 200 determines that there is no menu for the VMG, and the VTS located in the VMGI of the data area (DVD-Video zone) of the disc mounted in the DVD player 300. The DVD player 300 is controlled to read the ATRT, and the DVD player 300 reads the VTS-ATRT located in the VMGI under the control of the system controller 200 (S70). At this time, the VTS-ATRT stores information for knowing the number of all VTSs existing in the data area of the disk.

On the other hand, as a result of the determination in step S30, if VMGM_VOBS_SA is not 0, the system controller 200 determines that a menu for the VMG exists, and controls the DVD player 300 to play VMGM_VOBS sequentially, and the DVD player 300 ) Sequentially reproduces the VMGM_VOBS under the control of the system controller 200 (S 40), and as a result, the screen for the VMGM is displayed on the monitor 400.

While performing the step S40, when the menu screen desired by the user is displayed, the user will operate the introductory release key provided in the key input unit 100 to normally reproduce the current menu, and thus, the key input unit 100 Generates an introduction release key signal corresponding to the introduction release key and applies it to the system controller 200. (S50)

When the introduction release key signal is applied from the key input unit 100 in step S 50, the system controller 200 releases the menu introduction mode, controls the DVD player 300 to play normally from the current menu, and the DVD player 300. ) Plays normally from the current menu (S 140).

On the other hand, if the VMGM_VOBS is played in the state in which the introduction release key signal is not generated during the step S40, the system controller 200 may perform the recording of the data area (DVD-Video zone) of the disc mounted in the DVD player 300. The DVD player 300 is controlled to read the VTS-ATRT located in the VMGI, and the DVD player 300 reads the VTS-ATRT located in the VMGI under the control of the system controller 200 (S70).

Thereafter, the system controller 200 controls the DVD player 300 to read the VTSI_MAT of the first VTS, with reference to the VTS_ATRT read out in step S70, and the DVD player 300 controls the system controller 200. In this case, the VTSI-MAT is read and provided to the system controller 200. (S80) At this time, the system controller 200 can recognize the VTSM_VOBS_SA from the VTSI-MAT read by the DVD player 300. The system controller 300 determines whether the VTSM-VOBS-SA is 0 (S90).

As a result of the determination in step S90, if VTSM_VOBS_SA is 0, it is determined that there is no menu for the VTS, and it is determined whether there is a next VTS with reference to the VTS_ATRT read out in step S70 (S130). Repeat from step 80.

On the other hand, if the determination result of step S 90, VTSM_VOBS_SA is not 0, the system controller 200 determines that there is a menu for VTS, and controls the DVD player 300 to play the VTSM_VOBS sequentially, and the DVD player 300 ) Sequentially reproduces the VTSM_VOBS under the control of the system controller 200 (S100), and as a result, the screen for the VTSM is displayed on the monitor 400.

While performing the step S 100, when the menu screen desired by the user is displayed, the user will operate the introductory release key provided in the key input unit 100 to normally reproduce the current menu, and thus, the key input unit 100 Generates an introduction release key signal corresponding to the introduction release key and applies it to the system controller 200.

When the introduction release key signal is applied from the key input unit 100 in step S 110, the system control unit 200 releases the menu introduction mode, controls the DVD player 300 to play normally from the current menu, and the DVD player 300. ) Plays normally from the current menu (S 140).

On the other hand, if the VTSM_VOBS is played back while the introduction release key signal is not input during the step S100, the system controller 200 determines whether there is a next VTS with reference to the VTS_ATRT read out in the step S70 ( S 130), if there is the next VTS, repeat from step S 80.

Through the above-described process, the user can obtain a desired menu screen by two key operations.

As described above, according to the present invention, by introducing the menu for the VMG or VTS located in the data area of the disc mounted in the DVD system sequentially, only two keys without the hassle of checking each one to obtain the desired menu screen By operating the desired menu screen can be obtained, there is an effect that can improve the usability of the DVD system.

Claims (1)

In the menu playback method of the DVD system for reproducing the menu screen recorded in the video manager area and the video title set of the data area of the optical disc for DVD, A first step of detecting whether there is a menu for each of the video manager or the plurality of video title sets existing on the optical disc, and sequentially displaying the existing menu if the menu exists; A second step of repeating the first step until any one of the menus displayed in the first step is selected or all the menus for all the video managers or the plurality of video title sets present in the data area are played. Method of introducing a menu of the DVD system, characterized in that.