KR19980074789A - How to play optical disc - Google Patents

Abstract

The present invention relates to an optical disc reproducing method for allowing a user to selectively use a PBC function during a reproduction process for an optical disc having a structure capable of performing a PBC (Play Back Control) function in an optical disc reproducing apparatus. A first checking step of checking whether an arbitrary numeric key is controlled by the user after mounting the optical disc; A second checking step of checking whether the playback apparatus is in the stop mode if a random number key is controlled as a result of performing the first checking step; Automatically turning off a function mode for reproducing and selecting the history information on the program in a menu form when the playback apparatus is in the stop mode as a result of performing the second check step; A first playback processing step of performing playback processing for a program designated by arbitrary numeric key information after the function mode is turned off; A third check step of checking whether the playback mode key is controlled if any number key is not controlled as a result of performing the first check step; If the reproduction mode key is not controlled as a result of performing the third check step, returning to the first check step; A fourth check step of checking whether the playback device is in the stop mode if the playback mode key is controlled as a result of performing the third check step; As a result of performing the fourth check step, if the playback apparatus is in the stop mode, a second playback processing step of performing the playback process by performing the function mode using the information stored in the track 1 is performed.

Description

How to play optical disc

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a playback method for an optical disk, and more particularly, to a playback method for an optical disk configured to select a program to be played by using a PBC (Play Back Control) function.

An optical disc is a medium capable of recording and reproducing a large amount of information. Generally, a lead in area for storing additional information, a data area for storing substantial program information, and a lead out located at the outermost portion of the optical disc are provided. The information is divided into areas. An optical disk having such a structure is referred to as a compact disk (CD) version 1.1. The optical disk corresponding to version 1.1 is configured to perform a playback mode by referring to information stored in the lead-in area. However, since the level of information provided through the lead-in area is about the number of programs contained on the optical disc and the starting point of each program, the contents of the program stored on the optical disc must be pre-selected in order to select a program to be played by the user. There were disadvantages to be aware of.

In order to solve this disadvantage, an optical disc containing code information capable of performing the PBC function has been proposed. The PBC function allows the user to select a program to be played through a menu-played screen. As shown in FIG. 1, an optical disc proposed to perform the PBC function basically divides an information storage area into a lead-in area 100, a data area 102, and a lead-out area 104, and a data area. Information for performing the above-described PBC function is stored in the first track 102 (hereinafter referred to as track 1). In particular, as shown in FIG. 2, the track 1 includes a primary volume descriptor (PVD) area 200, a basic information area 202, a video CD information area 204, a segment play item (SPI) area 206, and a CDI ( CD Interactive) is divided into an area 208, and stores the corresponding information. Among the areas, menu information necessary for performing the above-described PBC function in the SPI area 206 (for example, still images introducing menu contents). Slice screen and video screen) and address information of these menu information are stored in the PSD (Play Sequence Discriptor) area of the video CD information area 204 described above. An optical disc having such a structure may be referred to as CD version 2.0 to distinguish it from the above version 1.1.

However, during the playback process of the optical disc corresponding to the above-mentioned version 2.0, the PBC function is used to select the playback program unconditionally. Nevertheless, there is a problem that unnecessary playback control time is required because the PBC function must be selected.

The present invention has been made to solve the above-described drawbacks, and an optical disc reproducing method for allowing a user to selectively use the PBC function during a reproduction process for an optical disc having a structure capable of performing a PBC (Play Back Control) function. The purpose is to provide.

In order to achieve the above object, the optical disk reproducing method according to the present invention performs a function of reproducing and selecting the information of a program stored in the data area in a predetermined area of track 1 in the data area in a menu form. An apparatus for reproducing an optical disc containing information for performing the following steps, comprising: a first checking step of checking whether an arbitrary numeric key is controlled by a user after mounting the optical disc; A second checking step of checking whether the playback apparatus is in the stop mode if a random number key is controlled as a result of performing the first checking step; Automatically turning off a function mode for reproducing and selecting the history information on the program in a menu form when the playback apparatus is in the stop mode as a result of performing the second check step; A first playback processing step of performing playback processing for a program designated by arbitrary numeric key information after the function mode is turned off; A third check step of checking whether the playback mode key is controlled if any number key is not controlled as a result of performing the first check step; If the reproduction mode key is not controlled as a result of performing the third check step, returning to the first check step; A fourth check step of checking whether the playback device is in the stop mode if the playback mode key is controlled as a result of performing the third check step; As a result of performing the fourth check step, if the playback apparatus is in the stop mode, the second playback processing step includes performing a playback process by performing a function mode by using the information stored in the track 1.

1 is an overall structure diagram of an optical disc configured to select a desired program for playback using the PBC (Play Back Control) function

FIG. 2 is a data structure diagram included in track 1 shown in FIG.

3 is a schematic functional block diagram of a general optical disc player

4 is a flowchart of an optical disk reproducing method according to the present invention.

Explanation of symbols for main parts of the drawings

300: optical disk 310: key input unit

320: control unit 330: playback processing unit

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, an embodiment of the present invention for achieving the above object in detail.

3 is a schematic block diagram of a general optical disc reproducing apparatus, in which an optical disc 300 containing code information capable of performing a PBC (Play Back Control) function and a key for applying a user's command The control unit 320 controls to perform a function according to a command applied through the input unit 310, the key input unit 310, and is controlled by the control unit 320 to read information contained in the optical disc 300 for reproduction processing. And a playback processing unit 330.

4 is a flowchart of an optical disk reproducing method according to the present invention.

Next, an operation of the optical disc reproducing method according to the present invention shown in FIG. 4 will be described in detail with reference to FIG. 3.

First, in step 401, it is checked whether an arbitrary numeric key is controlled through the key input unit 300. As a result of the check, if the random number key is controlled, the flow proceeds to step 402. In step 402, the controller 320 checks whether the optical disc 300 currently mounted in the optical disc reproducing apparatus 340 is configured to perform the PBC function (hereinafter, referred to as version 2.0). This check is performed by analyzing information read from the lead-in area on the optical disc 300 through the reproduction processing unit 330.

As a result of the check in step 402, if the mounted optical disc 300 is not a version 2.0 optical disc, the process proceeds to step 403 to perform a corresponding function and ends the operation. However, as a result of checking in step 402, if the mounted optical disc 300 is version 2.0, the process proceeds to step 404 to check whether the current playback apparatus is in the stop mode.

If the check result of step 404 is not the stop mode, the standby state is maintained until the stop mode. However, if the optical disc reproducing apparatus 340 is in the stop mode, the flow advances to step 405 to set the PBC function mode to the off state. When the PBC function mode is off, the control unit 320 switches to the off state if the PBC function mode currently set on the optical disc player 340 is on, and maintains the PBC function if the PBC function mode is off. Set the mode to off. In this way, when the PBC function mode is set to the OFF state, the same environment as in the mode in which a program to be played back can be selected using the numeric keys as in the case of an optical disc (for example, version 1.1) that cannot perform the PBC function is performed.

Therefore, in step 406, when the user controls the predetermined numeric key through the key input unit 310, the control unit 320 jumps to the track in which the corresponding program in the data area 102 is stored and performs the playback process. 330 is controlled and then returned.

However, if the random number key is not controlled as a result of the check in step 401, the flow proceeds to step 407 to check whether the playback mode key is controlled through the key input unit 310. As a result of the check, if the playback mode key is not controlled, the process returns to step 401 described above. However, if the play mode key is controlled, the process proceeds to step 408 to check whether the mounted optical disc 300 is version 2.0. As a result of the check, in the case of version 2.0, the process proceeds to step 409 to check whether the current playback apparatus is in the stop mode.

If the check result of step 409 is not the stop mode, the standby state is maintained until the stop mode. However, when the optical disc reproducing apparatus 340 is in the stop mode, the process proceeds to step 410 and the playback processing unit 330 is controlled to perform the PBC function by reproducing the information contained in the track 1, and the process proceeds to step 411. . In step 411, when a user selects a program to be played back through the menu information played through the PBC function, the controller 320 jumps to the track in which the corresponding program is recorded and performs the playback process to perform the playback process. After control, it is returned.

As a result of checking in step 408, if the mounted optical disc 300 is not version 2.0, the process proceeds to step 412 to sequentially process playback of a program stored in the data area.

In addition, the optical disc reproducing method according to the present invention may be operated by changing the order of the checking step performed in step 401 and the checking step performed in step 407. That is, the optical disk player first checks whether the playback mode key is controlled, performs the function if the playback mode key is controlled, and checks whether the numeric key is controlled if the playback mode key is not controlled. It can be driven in the order.

As described above, the present invention takes unnecessary playback control time during playback by allowing the user to selectively use the PBC function by using a simple numeric key when playing an optical disc configured to select a desired program for playback through the PBC function. There is an effect that can be prevented.

Although the present invention has been described as the above-described embodiment, those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (3)

An apparatus for reproducing an optical disc containing information for performing a function of reproducing and selecting history information of a program stored in the data area in a menu form in a predetermined area of track 1 in a data area, the method comprising: A first checking step of checking whether an arbitrary numeric key is controlled by a user after mounting the optical disc; A second checking step of checking whether the playback apparatus is in the stop mode when the random number key is controlled as a result of performing the first checking step; Automatically turning off a function mode for reproducing and selecting the history information of the program in the menu form when the playback apparatus is in the stop mode as a result of performing the second check step; A first playback processing step of performing playback processing for a program designated by arbitrary numeric key information after the function mode is turned off; A third check step of checking whether a play mode key is controlled if the random number key is not controlled as a result of performing the first check step; If the play mode key is not controlled as a result of performing the third check step, returning to the first check step; A fourth check step of checking whether the playback device is in the stop mode if the playback mode key is controlled as a result of performing the third check step; And a second playback processing step of performing a playback process by performing the function mode by using the information stored in the track 1 when the playback apparatus is in the stop mode as a result of performing the fourth check step. Optical disc playback method. The method of claim 1, wherein the second checking step and the fourth checking step are performed such that the mounted optical disc reproduces and selects detailed information about the program in the menu form before checking whether the playback apparatus is in the stop mode. And further checking whether the function mode can be performed. An apparatus for reproducing an optical disc containing information for performing a function of reproducing and selecting history information of a program stored in the data area in a menu form in a predetermined area of track 1 in a data area, the method comprising: A first checking step of checking whether a reproducing mode key for the reproducing apparatus is controlled after mounting the optical disc; A second check step of checking whether the mounted optical disc can perform the function if the play mode key is controlled as a result of performing the first check step; A third check step of checking whether the playback apparatus is in the stop mode if the optical disc is capable of performing the function as a result of performing the second check step; As a result of performing the third check step, if the playback device is in the stop mode, a playback mode is performed by performing a function mode that allows the player to select and play the detailed information about the program in the menu form using the information stored in the track 1. A first reproduction processing step of performing; A fourth check step of checking whether a random number key is controlled by a user if the play mode key is not controlled as a result of performing the first check step; A fifth check step of checking whether the optical disc can perform the function if the random number key is controlled as a result of performing the fourth check step; A sixth check step of checking whether the playback apparatus is in the stop mode if the optical disc is capable of performing the function as a result of performing the fifth check step; Automatically turning off the function mode if the playback apparatus is in the stop mode as a result of performing the sixth check step; A second playback processing step of performing playback processing for a program designated by arbitrary numeric key information after the function mode is turned off; And if the random number key is not controlled as a result of performing the fourth check step, returning to the first check step.