KR100282272B1 - How to control playback of video compact disc systems - Google Patents

Abstract

The present invention relates to a method of controlling playback of programs recorded on the plurality of optical discs by using reproduction control information and screen configuration information read from a plurality of optical discs mounted in a tray roulette of a video compact disc system. Set an integrated path by integrating the integrated path; configure integrated screen configuration information by integrating the individual stored screen configuration information; and when a key signal requesting a reproduction control screen is applied from the outside, After displaying the integrated playback control screen reconstructing the individual playback control information, and if a selection key signal is applied by a user's key operation, the individual playback control information is retrieved based on the integration path, and from the individual playback control information. Search for a control function corresponding to the selection key In addition, by providing a playback control method of a video compact disc system configured to perform the searched control function, the user can simultaneously control playback of programs recorded on a plurality of discs through a single playback control screen. This has a promoting effect.

Description

How to control playback of video compact disc systems

The present invention relates to a video compact disc system (VCD), and more particularly, to a method of displaying a playback control screen of a video compact disc system capable of simultaneously controlling playback of a plurality of discs mounted in a tray roulette. will be.

Computer and communication technologies are developing remarkably toward the 21st century information society. Accordingly, the amount of information such as text information, voice information, image information, and the like is increasing at an enormous speed, and there has been a demand for development of a storage medium capable of effectively storing the information and a reproduction device capable of reading information stored in the storage medium.

In response to the demands of the times, one of the developed storage media is an optical disk, which is a storage medium capable of storing and reading information using light such as a laser. A mass storage medium that can store data in units of gigabytes (GB). Such an optical disk has a larger storage capacity than a conventional video storage medium (eg, Video Tape) and a good signal / noise ratio (S / N ratio), thereby providing high image / high sound quality. It is possible to obtain a random random access function (Random Access) function that can be played at any location, and its popularity is greatly increasing, and is replacing the existing storage media.

In particular, an optical disc used for storing a moving image (for example, a movie) having a large amount of data by using a moving picture compression technique of MPEG-2 is called a video compact disc (VCD). Such video compact discs are used for learning, movies, and accompaniment. Also, a device capable of reproducing (reading out) information (text, video and audio) stored on such a video compact disc is called a video compact disc system.

These video compact discs can be classified into two types, version 1.1 and 2.0. In particular, the version 2.0 VCD2.0 is a user-interactive VCD. It provides playback control (PBC) function. At this time, such a PBC function is performed by a play sequence descriptor (PSD) recorded in the first track of the program area of the VCD, and the process of configuring a playback control screen using the PSD is well known to those skilled in the art. It will be omitted.

Referring to FIG. 1, which shows an example of a playback control screen constructed by the prior art, the IDs of actual multiple programs recorded in the program area of the disc (e.g., in the case of a flexible accompaniment VCD, The title of the song) is shown. At this time, the user can receive the corresponding program by selecting the number corresponding to each program ID.

On the other hand, since the storage capacity of the optical disc is limited, since a movie with a long running time cannot be recorded in one disc, it is divided and stored in a plurality of (eg, 2 to 3) optical discs. At this time, when the reproduction of the program recorded on one optical disc is completed, in order to play the program recorded on the next optical disc, the disc loaded in the tray is mounted, the next disc is mounted, and there is a need to play again.

In addition, in the case of a flexible accompaniment VCD, it is preferable to store more songs in order to broaden the selection range to satisfy the user's taste, but this also limits the storage capacity of the optical disc. The number of tunes that can be made is limited. Therefore, there is an inconvenience of having to alternately mount a disc containing desired music in a tray.

An optical disc changer has been developed to solve such a problem, and includes a tray roulette capable of mounting a large number of disks, rotates the tray roulette, and turns off the tray every time. This allows multiple trays to be continuously played back or selectively played back without replacing the mounted disc.

However, in the case of a video compact system having such an optical disc changer, it is possible to continuously and selectively play back a program recorded on a plurality of optical discs, but there are limitations in using the PBC function provided in the conventional video compact disc system.

That is, even in a video compact system having an optical disk changer, the storage provided in the system stores only TOC information of the optical disk currently being played and information for supporting the PBC function (hereinafter referred to as 'PBC information'). When another optical disc is selected by the rotation of the roulette, existing information (i.e., TOC information and PBC information) is deleted, and only the TOBC information and PBC information of the replaced optical disc are recorded in that area, so that only the PBC function for one disc This is supported.

Therefore, in the case of a flexible accompaniment VCD, only the whole songs contained in a plurality of discs are not displayed, but only the songs contained in a single disc are displayed. Since only is displayed, not only can not fully utilize the functions provided by the optical disk changer, but still inconvenience in use remains.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and can display PBC screens for a plurality of disks mounted in a video compact disc system in one screen to control playback of a plurality of disks simultaneously in one PBC screen. An object of the present invention is to provide a playback control method of a video compact disc system.

In order to achieve the above object, in the present invention, a method for controlling playback of a program recorded on the plurality of optical disks by using the reproduction control information and the screen configuration information read from the plurality of optical disks mounted in the tray roulette of the video compact disc system The method of claim 1, further comprising: sequentially selecting the plurality of optical discs to read reproduction control information and screen configuration information, and separately storing the read information for each optical disc; A second step of integrating the individually stored plurality of reproduction control information to set up an integrated path and at the same time integrating the individually stored screen configuration information to set integrated screen configuration information and storing the set integrated path and integrated screen configuration information; ; A third step of configuring the plurality of individual playback control information into an integrated playback control screen based on the integrated screen configuration information when a key signal requesting a playback control screen is applied from the outside, and displaying the configured integrated playback control screen; ; A fourth step of retrieving individual reproduction control information corresponding to the selection key based on the integrated path when a predetermined selection key signal is applied while displaying the reproduction control screen; A fifth step of searching for a predetermined control function corresponding to the selection key signal from the retrieved individual reproduction control information; And a sixth step of performing the searched predetermined control function.

1 is an exemplary view showing a playback control screen according to the prior art;

2 is a block diagram of hardware suitable for implementing a playback control method of a video compact disc system according to the present invention;

3 is a detailed flowchart illustrating a playback control method of a video compact disc system according to the present invention;

4 is an exemplary view showing an example of a playback control screen for performing a playback control method of a video compact disc system according to the present invention;

<Description of the code | symbol about the principal part of drawing>

100: key input unit 200: system control unit

300: VCD Player 400: Tray Roulette

500: storage unit 600: OSD processing unit

700: display unit

Hereinafter, with reference to the accompanying Figures 2 to 4 will be described in detail a preferred embodiment of the present invention.

2 is a block diagram of hardware suitable for implementing a playback control method of a video compact disc system according to the present invention. FIG. 3 is a detailed flowchart illustrating a playback control method of a video compact disc system according to the present invention. 4 is an exemplary view showing an example of a playback control screen for performing a playback control method of a video compact disc system according to the present invention.

First, referring to FIG. 2, hardware suitable for implementing a reproduction control method of a compact disc system according to the present invention includes a key input unit 100, a system control unit 200, a VCD player 300, and a tray roulette 400. , The storage unit 500, the OSD processing unit 600, and the display unit 700, and each individual configuration and function thereof are as follows.

The key input unit 100 includes a key panel attached to a remote controller or a video compact disc player 300 main body including selection keys such as a PBC key and a plurality of numeric keys, and generates a key signal corresponding to a user's key operation. The generated key signal is provided to the system controller 200.

The system control unit 200 controls the overall operation of the VCD player 300, and in particular, a plurality of discs (eg, discs # 1, # 2, etc.) mounted on the tray roulette 400 by the VCD player 300. The TOC information (# 1, # 2, # 3) respectively read out from # 3) is stored in the storage unit 500, and the individual playback control information and the individual screen from each of the plurality of disks are referred to with reference to the stored TOC information. The VCD player 300 is controlled to read the configuration information, and the individual reproduction control information and the individual screen configuration information read by the VCD player 300 are stored in the storage unit 500 or retrieved from the storage unit 500. In addition, the system control unit 200 sets an integrated path for integrating individual playback control information stored in the storage unit 500, sets individual screen configuration information by integrating individual screen configuration information, and provides information on the set integrated path. And store the integrated screen configuration information in the storage unit 500 or retrieve the information from the storage unit 500. When the PBC key signal is applied from the key input unit 100, the system controller 200 configures individual playback control information into an integrated playback control screen based on the integrated screen configuration information, and the data for the integrated playback control screen. To the OSD processing unit 600, and controls the OSD processing unit 600 to configure and display data on the provided integrated playback control screen as an integrated playback control screen. In addition, when the selection key signal is applied from the key input unit 100 while the integrated playback control screen is displayed through the display unit 700, the playback control function corresponding to the selected selection key signal is searched for by referring to the integrated path and the individual control information. And control the VCD player 300 to perform the retrieved playback control function.

The VCD player 300 rotates the tray roulette 400 to select a disc to be played by rotating the tray roulette 400, and reads out a program and additional information contained in a track of the selected disc, and reads the disc. The processed program is signal-processed and output as video / audio through a monitor and a speaker, and additional information is provided to the system controller 200. At this time, such additional information includes TOC information recorded in the lead-in area of the optical disc, playback control information and screen configuration information recorded in the first track of the program area, program end information stored in the lead-out area, and the like. Included.

The tray roulette 400 is provided with means for mounting a plurality of optical discs, and is rotated by the driving of the VCD player 300 under the control of the system controller 200.

The storage unit 500 separately stores TOC information, playback control information, screen configuration information, and the like, read out from a plurality of optical discs mounted on the tray roulette 400 by the VCD player 300, corresponding to each disc, and is stored in the system controller. The information on the integrated path of the individual playback control information set by 200 and the integrated screen configuration information in which the individual screen configuration information is integrated are stored.

The OSD processing unit 600 composes an OSD screen based on the data for the integrated playback control screen configured by the system control unit 200, and synthesizes the configured OSD screen at a predetermined ratio with the playback screen provided from the optical disc player 300. Then, the synthesized screen is displayed through the display unit 700.

The display unit 700 includes a monitor or the like, and the playback screen provided from the optical disc player or the integrated playback control screen configured in the OSD processing unit 600 is displayed via the OSD processing unit 600.

Hereinafter, a process of implementing the reproduction control method of the video compact disc system according to the present invention in the above-described hardware will be described in detail with reference to FIG. 3.

First, when power is applied to the video compact disc system in a state where the optical discs # 1, # 2, and # 3 are mounted on the tray roulette 400 (S 10), the system controller 200 controls the tray roulette 400. The VCD player 300 is controlled to read TOC information from the optical disc # 1.

The VCD player 300 drives the tray roulette 400 to select the optical disc # 1 under the control of the system controller 200, and selects TOC information (in the lead-in area of the selected optical disc # 1). # 1) is read, and the read information is provided to the system controller 200.

The system control unit 200 that has received the TOC information # 1 from the VCD player 300 stores the received TOC information # 1 in a predetermined area of the storage unit 500 (S20).

When the step S20 is completed, the system controller 200 searches for the first track position in the program area of the optical disc # 1 from the TOC information # 1, and based on the retrieved information, the program of the optical disc # 1. The VCD player 300 is controlled to read out the information contained in the first track of the area.

Under the control of the system control unit 200, the VCD player 300 includes information recorded in the first track of the program area of the optical disc # 1, in particular, reproduction control information # 1 and screen configuration information # 1. Is read, and the read information is provided to the system controller 200.

The system controller 200 stores the playback control information # 1 and the screen configuration information # 1 provided from the VCD player 300 in a predetermined area of the storage unit 500 (S30).

When the step S30 is completed, the system controller 200 controls the VCD player 300 to read TOC information from the optical disc # 2 of the tray roulette 400.

The VCD player 300 drives the tray roulette 400 to select the optical disc # 2 under the control of the system control unit 200 (S40), and enters the lead-in area of the selected optical disc # 2. The recorded TOC information # 2 is read out, and the read information is provided to the system controller 200.

The system controller 200 stores the TOC information # 2 provided from the VCD player 300 in a predetermined area of the storage 500 (S50). In this case, in the preferred embodiment of the present invention, the previously stored TOC information # 1 may be erased, and then the newly provided TOC information # 2 may be stored in the storage location of the TOC information # 1. The TOC information # 2 may be stored in an area different from the storage area of the TOC information # 1 in the area of 500.

Subsequently, the reproduction control information # 2 and the screen configuration information # 2 corresponding to the optical disc # 2 are stored in a predetermined area of the storage unit 500 by the same process as step S30 (S60). At this time, the reproduction control information (# 2) and the screen configuration information (# 2) is a storage unit which is distinguished from the region in which the reproduction control information (# 1) and the screen configuration information (# 1) of the storage unit 500 is stored The 500 may be stored in a predetermined area of the storage 500.

Next, the optical disc # 3 is selected by the same process as in step S40 (S70), and the TOC information # 3 is stored in a predetermined area of the storage unit 500 by the same process as in step S50. (S 80). At this time, if the previously stored TOC information # 1 is deleted when the TOC information # 2 is stored in step S50, the previously stored TOC information # 2 is erased and the storage area of the deleted TOC information # 2 is deleted. TOC information (# 3) is stored in. On the other hand, if the TOC information (# 2) is stored in a location different from the TOC information (# 1) while the TOC information (# 1) is stored in step S50, TOC information (# 1) and TOC information (# 2) is The TOC information # 3 is stored in a predetermined position of the storage unit 500 different from the stored storage area.

Subsequently, the playback control information # 3 and the screen configuration information # 3 are stored in a predetermined area of the storage unit 500 by performing the same process as step S60 (S90).

As described above, when each reproduction control information (# 1, # 2, # 3) and each screen configuration information (# 1, # 2, # 3) are completed by the steps S20 to S90, the system control unit 200 sets an integrated path from which any one of the individual reproduction control information # 1, # 2, # 3 can be selected, and stores information on the set integrated path in the storage unit 500. In addition, the system controller 200 reconfigures the integrated screen configuration information by giving virtual disk separators to the individual screen configuration information # 1, # 2, and # 3, and stores the reconstructed integrated screen configuration information. ). In this case, as shown in FIG. 4, the virtual disk separator may be 10X of optical disk # 1, 20X of optical disk # 2, 30X of 30X of optical disk # 3, and so on. , 10, 20, 30, and the like correspond one-to-one with each of the individual reproduction control information # 1, # 2, # 3 by the integrated path (S100).

When the PBC key signal is applied from the key input unit 100 in the state in which the above-described step S100 is completed (S110), the system control unit 200 individually reproduces the data based on the integrated screen configuration information stored in the above-described step S100. The control information (# 1, # 2, # 3) is configured as an integrated playback control screen (S 120), and the OSD processing unit 600 provides data on the configured integrated playback control screen while providing the provided data. The OSD processing unit 600 is controlled to display and configure the integrated reproduction control screen.

Under the control of the system controller 200, the OSD processing unit 600 stores data on the integrated playback control screen provided from the system controller 200 in a predetermined format (for example, the format shown in FIG. 4). Based on this, the integrated playback control screen (for example, FIG. 4) is configured, and the configured integrated playback control screen is displayed through the display unit 700 (S 130).

When the selection key signal is applied from the key input unit 100 in step S 130, the system controller 200 searches for the corresponding reproduction control information from the information on the integrated path included in the selection key signal. For example, when a selection key signal of 2, 0, 3 is applied in the integrated playback control screen shown in FIG. 4, the system control unit 200 searches for individual playback control information # 2 from 2, 0 (S). 150).

Then, the control function corresponding to the selection key is retrieved from the individual reproduction control information retrieved in step S 150. For example, since 2, 0, and 3 will be codes corresponding to 3 included in the individual playback control information # 2, a code corresponding to 3 (playback control function) is searched for (S 160).

Thereafter, the system controller 200 controls the VCD player 300 to perform a predetermined function (for example, playing back song 3 of the optical disc # 2) corresponding to the playback control function found in step S160. The VCD player 300 performs a predetermined function under the control of the system controller 200 (S 170).

According to the present invention described above, it is possible to simultaneously control playback of programs recorded in each of the plurality of optical discs mounted in the tray roulette through one integrated playback control screen, thereby improving the convenience of use.

Claims (3)

A method of controlling playback of programs recorded on a plurality of optical disks by using playback control information and screen configuration information read from a plurality of optical disks mounted in a tray roulette of a video compact disc system, A first step of sequentially selecting the plurality of optical discs to read reproduction control information and screen configuration information, and separately storing the read information for each optical disc; A second step of integrating the individually stored plurality of reproduction control information to set up an integrated path and at the same time integrating the individually stored screen configuration information to set integrated screen configuration information and storing the set integrated path and integrated screen configuration information; ; A third step of configuring the plurality of individual playback control information into an integrated playback control screen based on the integrated screen configuration information when a key signal requesting a playback control screen is applied from the outside, and displaying the configured integrated playback control screen; ; A fourth step of retrieving individual reproduction control information corresponding to the selection key based on the integrated path when a predetermined selection key signal is applied while displaying the reproduction control screen; A fifth step of searching for a predetermined control function corresponding to the selection key signal from the retrieved individual reproduction control information; And a sixth step of performing the searched predetermined control function. The method of claim 1, wherein the third step, The integrated playback control screen includes a virtual disk separator for distinguishing paths of the respective disks. The method of claim 2, wherein the integration path, And a storage location of individual control information of each disk corresponding to the virtual disk separator.