KR19980065240A - Optical Disc Playback Method - Google Patents

Abstract

The present invention relates to an optical disc reproducing method, and more particularly, to an optical disc reproducing method which simplifies a function selection operation according to a system specification during a digital video disc reproducing operation.

The optical disc reproducing method includes a first step of storing state information set by a user in accordance with recording characteristics of a recording medium, a second step of monitoring key signal input for recall of the state information, and a recall key in a second step. And a third step of recognizing the state information stored in the first step when the signal is input to the system.

Description

Optical Disc Playback Method

1 is a block diagram showing a conventional optical disc reproducing apparatus.

2 (a) to 2 (d) are display state diagrams during a selection operation according to angle, audio, subtitle, and parental lock.

3 is a block diagram of an optical disc reproducing apparatus according to the present invention.

4 is an operation flowchart according to a process for storing a selected function in an optical disc reproducing apparatus according to the present invention.

5 is a flowchart illustrating an operation of recognizing a function selected according to a recall command in the optical disc reproducing apparatus according to the present invention.

6 (a) to 6 (d) are display state diagrams during selection operation according to angle, audio, subtitle and parental lock in accordance with the present invention.

Explanation of symbols on the main parts of the drawings

51: optical disk 53: optical pickup device

55: signal processing circuit 57: error correction circuit

59: VBR buffer 61: motor

63: servo circuit 65: microprocessor

66: key input section 67: the navigator

69: EEPROM71: video decoding circuit

73, 79: digital / analog converter 75: graphics circuit

77: audio signal processing circuit 81: NTSC / PAL encoder

83: dummy data removal unit

The present invention relates to an optical disc reproducing method, and more particularly, to an optical disc reproducing method which simplifies a function selection operation according to a system specification during a digital video disc reproducing operation.

Digital Video Discs (hereinafter referred to as 'DVDs') can record numbers, letters, figures, voices, and even moving images. Since the digital recording method is used, there is a need to worry about deterioration in image quality during repeated playback. There is no optical disk. In addition, since the DVD has a capacity of about 5.2 Gbyte (one side), that is, enough to store an existing movie even in the case of a moving picture, the digital video disc is a new multimedia system for video / audio and computer fields. Will be used as a compatible medium for the times.

DVDs with such capacities are directly related to the field of video as much as they are actually called video recording media. Thus, DVD has enough storage capacity to store one movie, and as an application format of DVD, video format includes the following system specification including interleaving function according to the current era. Had.

First up to 9 angle screens, second up to 8 languages, up to 32 languages with language subtitles, thirdly select menu screens with multiple programs, and obscene It will have a function such as parental lock to block one screen from children.

The following describes a conventional optical disc reproducing apparatus for reproducing a DVD having such a feature.

In the configuration, an optical disc 1 recorded as data corresponding to a function of up to 9 angles, 8 audios, 32 subtitles, and a parental lock for a video title, and data recorded on the optical disc 1 An optical pickup device 3 for reading, a motor 11 for rotating the optical disc 1, a servo circuit for applying a drive signal to the motor 11 and the optical pickup device 3, and the servo circuit A microprocessor 15 for controlling the operation of the is included.

There is a key input unit 16 for applying a key signal to the microprocessor 15. The key input unit 16 is adapted to selectively play up to 9 angles, 8 audios, 32 subtitles, and parental locks for video titles recorded on the optical disc 1, respectively. It has key selection means for the function. That is, it includes an angle selection key, an audio selection key, a subtitle selection key, and a parental lock selection key, and other keys (numeric keys, power on / off keys, etc.) possessed by general key input means.

A signal processing circuit 5 which performs a predetermined signal processing on a signal read from the optical pickup device 3 under the control of the microprocessor 15, and inputs an output signal of the signal processing circuit 5 to bit An error correction circuit 7 for correcting and outputting an error generated in the stream, and a variable transmission rate buffer (hereinafter referred to as a 'VBR buffer') that temporarily stores an error corrected and output signal from the error correction circuit 7: 9) is included.

In addition, when a signal necessary for data transmission is exchanged with the microprocessor 15, there is a navigator 17 that performs overall control necessary for the transmission of data output from the VBR buffer 9. The video decoding circuit 21 extracts only video data from a reproduction signal output from the VBR buffer 9 under the control of the navigator 17 and the video decoding circuit 21 under the control of the navigator 17. A graphics circuit 25 for extracting only subtitle data from an applied reproduction signal, and an audio signal processing circuit 27 for inputting an audio signal applied through the graphics circuit 25 under the control of the navigator 17. .

The video / decoding circuit 21 and the video and subtitle signals inputted to the graphics circuit 25 are decoded and output as original signals, and the digital / analog converter 26 converts the output signals into analog signals. And an on-screen display 31 for mixing and outputting the signal output from the digital / analog converter 23 and the character signal to be displayed according to the control operation of the microprocessor 15.

The audio signal input to the audio signal processing circuit 27 is decoded, and an audio digital / analog converter 29 for inputting the decoded signal and converting the signal into an analog signal is included, and the audio signal output from the converter is included. Is output through a speaker or the like.

FIG. 2 illustrates a state in which the key input unit 16 shown in FIG. 1 is displayed on the screen when selecting functions such as angle, audio, caption, and parental lock.

Next, the reproducing operation of the optical disc reproducing apparatus of the prior art according to the above configuration will be described in detail with reference to FIGS.

Once the optical disc 1 is mounted on a turntable (not shown), and before the reproduction operation of the mounted optical disc 1 is performed, the user selects a key having a desired function through the key input unit 16. That is, the optical disc 1 records data corresponding to a maximum of nine angles, eight audios, 32 subtitles, and a parental lock for a video title. There is a need for an interleaved playback operation in which the corresponding data is selectively played back.

For the interleaved playback operation, the user selects a desired function from each function. The operation will be described in more detail as follows.

The user selects by pressing an angle key ANGLE in the key input unit 16. The signal for the selected angle key is transmitted to the microprocessor 15, and the microprocessor 15 recognizes that the input signal is an angle key, and then outputs a menu screen according to the angle recognized by the on-screen display 31. Output a control signal. The on-screen display 31 displays a menu screen for the angle on a display device (not shown) as shown in FIG. 2 in synchronization with a video signal output from the digital / analog converter 23. To control.

The user selects a desired specific angle from the maximum nine angle screens displayed in FIG. 2 (a) by using an arrow key or a numeric key in the key input unit 16. At this time, the signal for the selected specific angle is transmitted to the microprocessor 15, and the microprocessor 15 transmits the signal for the specific angle selected by the user to the navigator 67.

Next, the user selects by pressing an audio key AUDIO on the key input unit 16. When the user selects an audio key, a signal for this audio is sent to the microprocessor 15, which recognizes that the input signal is an audio key and then sends the audio key to the on-screen display 31. Outputs a control signal to output a menu screen, and the on-screen display 31 mixes a signal applied from the microprocessor 15 with a video signal to display a second (b) on a display device (not shown). Control to be displayed with a tile.

The user selects the desired audio from the maximum 8 audios displayed on the second (b) diagram by using the arrow keys or the numeric keys on the key input unit 16. At this time, the selected audio signal is transmitted to the microprocessor 15, and the microprocessor 15 transmits a signal for the audio selected by the user to the navigator 67.

Then, the user selects the subtitle selection key (SP) by the above-described operation and repeated operation, and selects ON when the subtitle data is to be output, and OFF when the subtitle data is not desired. Subtitle selection is performed by selecting. When ON is selected according to the subtitle selection key S-P, a subtitle according to audio is selected as an output subtitle. Next, in Figure 2 (d), you choose what you want according to the parental lock function to protect youth from obscene or violent screens.

By the above process, a specific one desired by the user according to the system specification of the DVD is selected, and the navigator 17 which recognizes the status information according to each function becomes the system ready state accordingly. That is, a control signal is applied to the audio signal processing circuit 27 for audio so as to be ready for signal processing for the selected audio, and a control signal is applied to the graphics circuit 25 for the selected subtitle language. Control for the ready state so that the subtitle data applied to can be processed. The angle information and the parental lock are also aware of the state information so that only the video signal thereof can be reproduced. That is, the navigator 17 recognizes the status information applied through the microprocessor 15 and controls the playback operation according to the recognized status information.

After the above operation, the reproducing operation of the optical disc 1 is performed. That is, the microprocessor 15 controls the servo circuit 13, and the servo circuit 13 applies a drive signal to the optical pickup device 3 and the motor 11 so that the optical pickup device 3 is an optical disc. Read the recorded signal from (1).

The signal read out from the optical pickup device 3 is converted into an electrical signal and outputted. The output signal is inputted to the signal processing circuit 5 and outputted to the error correction circuit 7 after a predetermined signal processing. The error correction circuit 7 corrects and outputs an error of an input code signal, and this output signal is temporarily stored in the VBR buffer 9. The VBR buffer 9 temporarily stores an input signal and performs input / output of data in a manner of first outputting the input signal.

The signal output from the VBR buffer 9 is input to the video decoding circuit 21 and simultaneously to the navigator 17, and the navigator 17 analyzes what data is input. If the data input in this process is video data, a control signal is output to the video decoding circuit 21 to control the video data extraction circuit 21 to extract the video data. In the same operation as the video decoding circuit 21, the graphics circuit 25 extracts a caption signal, and only the audio signal is input to the audio signal processing circuit 27.

On the other hand, when the signal output from the VBR buffer 9 is program chain data required for the interleaved reproducing operation, the navigator 17 recognizes this and outputs a control signal accordingly. That is, as mentioned above, in the angle function, the state information for the selected angle is recognized as the operation for reproducing only the data for the selected angle, and the data output from the VBR buffer 9 is used for the selected angle. When the position data is for searching for the next block, the navigator 17 recognizes the position information recorded in the program chain data, and outputs the recognized position information to the microprocessor 15.

The microprocessor 15 controls the track jump operation of the optical pickup device 3 in accordance with this positional information. Thus, the signal read out from the optical pickup device 3 after the track jump operation becomes the next video signal for the selected angle. The signal read out from the optical pickup device 3 is transmitted to each decoding circuit through the signal processing circuit 5, the error correction circuit 7, and the VBR buffer 9, and each decoding circuit 21, 25, 27 The reproduced signal decoded at is converted into an analog signal and then displayed on the display device.

That is, the navigator 17 recognizes the state information of the selected audio, the state information of the selected subtitle, and the state information of the selected parental lock function during the present optical disc 1 playback operation. When the program chain data is detected according to the state information recognized in the data output from 9), the track jump operation is performed.

By the above processes, the optical disc 1 performs a reproducing operation to the portion selected by the user according to each function, and this reproducing operation completes the reproducing operation of data for the angle, subtitle, audio, and parental lock selected by the user. It will be over.

However, in the conventional optical disc reproducing method, whenever a reproducing operation of the optical disc is performed, a setting operation of selecting a desired one from a function according to the system specification of the DVD is performed. Therefore, when one optical disc is to be repeatedly played back or another disc is played under the same conditions, the function selection setting operation must be performed again before the play operation. There was a problem.

It is therefore an object of the present invention to provide an optical disc reproducing method capable of storing state information according to a system specification of a selected DVD and returning the system to a stored state as necessary.

According to an aspect of the present invention, there is provided a method of reproducing an optical disc, comprising: a first step of storing state information set by a user according to a recording characteristic of a recording medium; and a second step of monitoring a key signal input for recall of the state information And a third step of recognizing, by the system, the state information stored in the first step when the recall key signal is input in the second step.

The optical disc reproducing method according to the present invention is characterized in that the system stores the state information of the system specification of the DVD selected by the user, and recognizes the state information of the stored state as it is.

This requires a memory for storing the system specification state information, and an operation of always detecting whether the user receives a recall command for the system specification state information. When the recall command is input, the system performs the playback operation according to the state information of the system specification stored in the memory.

Hereinafter, an optical disc reproducing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of an optical disc reproducing apparatus according to the present invention.

In the configuration, an optical disc 51 recorded as data corresponding to a function of up to 9 angles, 8 audios, 32 subtitles, and a parental lock for a video title, and data recorded on the optical disc 51 An optical pickup device 52 for reading out, a motor 61 for rotating the optical disc 51, a servo circuit 63 for applying a drive signal to the motor 61 and the optical pickup device 53, A microprocessor 65 for controlling the operation of the servo circuit 63 is included.

There is a key input unit 66 for applying a key signal to the microprocessor 65. The key input section 66 allows the player to selectively play up to 9 angles, 8 audios, 32 subtitles, and parental locks for video titles recorded on the optical disc 51, respectively. It has key selection means for the function. That is, it includes an angle selection key, an audio selection key, a subtitle selection key, and a parental lock selection key, and other keys (numeric keys, power on / off keys, etc.) possessed by general key input means. In addition, the key input unit 66 further includes a RECALL key for recalling the status information of the system specification of the DVD stored in the EEPROM 69, which will be described later.

In addition, an EEPROM 69 is configured to store state information on the system specification of the DVD applied from the microprocessor 65 and to output data when the stored signal is requested by the microprocessor 65.

And a signal processing circuit 55 for inputting a signal read from the optical pickup device 53 and performing a predetermined signal processing under the control of the microprocessor 65, and an output signal of the signal processing circuit 55. An error correction circuit 57 for correcting and outputting an error generated in the bit stream, and a variable transmission rate buffer (hereinafter referred to as a VBR buffer) that temporarily stores an error corrected and output signal from the error correction circuit 57. Includes 59).

In addition, there is a navigator 67 that exchanges signals for data transmission with the microprocessor 65 and performs overall control necessary for the transmission of data output from the VBR buffer 59. The video decoding circuit 71 extracts only video data from a reproduction signal output from the VBR buffer 59 under the control of the navigator 67 and the video decoding circuit 71 under the control of the navigator 67. A graphics circuit 75 for extracting only subtitle data from an applied reproduction signal, and an audio signal processing circuit 77 for inputting an audio signal applied through the graphics circuit 75 under the control of the navigator 67. .

The video / decoding circuit 71 and the video and subtitle signals inputted to the graphics circuit 75 are decoded and output as original signals, and the digital / analog converter 73 converts the output signals into analog signals. And an on-screen display for inputting a video signal output from the digital / analog converter 73 and a signal applied from the microprocessor 65, and mixing a video signal such as a menu screen with the video signal and outputting it on the screen. 81 is included.

The audio signal input to the audio signal processing circuit 77 is decoded, and an audio digital / analog converter 79 for inputting the decoded signal and converting it into an analog signal is included, and the audio signal output from the converter is included. Is output through a speaker (not shown) or the like.

Next, the reproducing operation of the optical disc reproducing apparatus according to the present invention according to the above configuration will be described in detail.

4 is an operation flowchart according to a process for storing a selected function in the optical disk reproducing apparatus according to the present invention, and FIG. 5 is an operation according to a process for recognizing the selected function according to a recall command in the optical disc reproducing apparatus according to the present invention. It is a flow chart.

First, a process of storing state information according to selection of each function will be described with reference to FIG. 4.

First, after purchasing an optical disc reproducing apparatus, a user's selection operation is required for each function according to the system specification of the DVD for interleaved reproducing operation as before conventional reproducing operation for reproducing any optical disc.

In other words, as one application format of DVD, the video format stores data corresponding to a video title according to functions such as up to 9 angles, 8 audios, 32 subtitles, and parental locks. There is a need for an interleaved playback operation in which data in accordance with the selected portion is selectively played back.

Therefore, the user selects by pressing an angle key in the key input unit 66. A signal for the selected angle key is sent to the microprocessor 65, which recognizes that the input signal is an angle key and then on the display (not shown) via the on-screen display 81. Control to be displayed as shown in FIG.

The user selects a desired specific angle from the maximum nine angle screens displayed in FIG. 6 by using an arrow key or a numeric key in the key input unit 66. At this time, the signal for the selected specific angle is transmitted to the microprocessor 65, and the microprocessor 65 outputs the signal for the specific angle selected by the user to the navigator 67.

Next, the user selects by pressing an audio key in the key input unit 66. When the user selects an audio key, a signal for this audio is sent to the microprocessor 65, which recognizes that the input signal is the audio key and then displays it on a display (not shown). 6 (b) control the on-screen display 81 to be displayed.

Then, the user selects the desired audio from the maximum 8 audios displayed in FIG. 6 (b) by using the arrow keys or the numeric keys in the key input unit 66. At this time, the selected audio signal is transmitted to the microprocessor 65, and the microprocessor 65 also outputs a signal for the audio selected by the user to the navigator 67.

Then, in the above and repeated operation, the user selects ON in the sixth (C) degree when the subtitle is displayed, and selects OFF when the subtitle is not desired. Of course, the caption display is performed in the same language as the audio when the on selection is made.

And in Figure 6 (d), we choose what we want according to the parental lock (P / L) function to protect the youth from obscene or violent screens. Since the parental lock function is a function for protecting children and adolescents from violent screens, if the viewer is always the same, the function of the currently selected parental lock function is set once more. That is, at this time, the user selects a reserve on or off key. When the on key is selected, the selected parental lock function is stored together in an EEPROM to be described later, and when the off key is selected, the parental lock is selected. The function returns to the initial state at the same time as the playback operation is completed. In this case, the initial state is usually set to children.

By the above process, a specific one desired by the user according to the system specification of the DVD is selected, and the navigator 17 which recognizes the status information according to each function becomes the system ready state accordingly. That is, the control signal is applied to the audio signal processing circuit 77 at the time of the selected audio input so as to be ready for signal processing for the selected audio, and when the signal for the selected subtitle language is input, the control is performed to the graphics circuit 75. The control is performed for the ready state so that the subtitle data applied in the selected language can be processed by applying the signal. Of course, the angle and the parental lock are controlled so that only video signals thereof can be reproduced. That is, the navigator 67 recognizes the state information applied through the microprocessor 65 and controls the reproduction operation to be performed according to the recognized state information.

On the other hand, when the microprocessor 65 recognizes that the selection operation for the system specification of the DVD has been completed, the microprocessor 65 determines whether a user command key for storing the state information set according to each function is input (step 110 in FIG. 4). ).

When the state information storage key is input in step 110, the microprocessor 65 may store the state information according to the state in which the system is set in the navigator 67, that is, the selected angle, the selected audio, the subtitle language, and the selected parental lock. It transmits a signal to transmit the data for (step 120 of FIG. 4).

The navigator 67 inputting the status information request signal according to step 120 outputs the status information according to the state in which the system is set to the microprocessor 65, and the microprocessor 65 outputs the input current status information to the EEPROM. Output to (69). The EEPROM 69 stores the input current state information (step 130 of FIG. 4).

In this case, the EEPROM stores information applied by the microprocessor, and the information stored in the EEPROM is optional for the parental lock. That is, by setting the reserve on / off key after setting the parental lock function, it is stored together when the reserve on key is set, and when the off key is set, the function for the parental lock is stored in the deleted state.

This is almost the same regardless of the age of the user, unless the audio, subtitle language and angle are to be played with an optical disk with a specific purpose. However, the parental lock function is a function to protect the young people from obscene and violent screens, and since the age of the user who uses the optical disc reproducing apparatus varies from children to adults, recalls of children and adolescents are described below. This is to prevent the problem caused by simply executing the command. Therefore, it may be one way to allow the adult to select by entering a specific password in the parental lock function.

After the above process is performed, the microprocessor 65 indicates that the current state information is stored on the display device (not shown) through the on-screen display 81 (step 140 in FIG. 4).

After the operation of storing the current state information is completed by the above procedure, the control operation according to the user command applied by the user through the key input unit 66 is performed. That is, when a user inputs a key signal for playing a disc through the key input unit 66, the microprocessor 65 outputs a control signal to the navigator 67 to prepare a state for data reproduction according to the currently set state information. And the servo circuit 63 and the optical pickup device 53 are controlled to perform the reproducing operation of the optical disc 51. Since the reproducing operation of the optical disc 51 is the same as the conventional one, detailed description thereof will be omitted.

Of course, the regeneration operation may not be performed after the state information storage operation according to FIG. However, the data stored in the EEPROM 69 is maintained as it is. This is because the EEPROM 69 stores the data once stored before the overwrite operation is performed.

On the other hand, after the reproducing operation is completed as described above, in the next reproducing operation, the user can use the state information stored in the EEPROM 69 as it is.

Next, with reference to FIG. 5, the operation of the system to return the state in response to the recall command in the optical disc reproducing apparatus according to the present invention will be described.

An arbitrary optical disc 51 is mounted on a turntable (not shown), and the user selects a ferental lock key or a recall key from the key input unit 66.

If the parent lock key (P / L) is selected, the user does not store the parent lock in the storage step according to the fourth step. This is to perform the setting operation according to the function. The microprocessor 65 displays the selection data for the selection operation of the parental lock on the screen in a state as shown in FIG. The user selects what he wants here, and this selected signal is transmitted to the navigator 67 via the microprocessor 65. The navigator 67 recognizes the state information of the parental lock by this input signal.

Next, the user selects the recall key of the status information in the key input unit 66 (step 210 of FIG. 5).

By this selection operation, the microprocessor 65 recognizes that the user wants to recall the status information, and thus checks whether there is status information stored in the EEPROM 69 (step 220 of FIG. 5). .

If it is determined in step 220 that the status information is not stored, an error message is output to close the recall operation of the status information (step 270 of FIG. 5), and if it is determined in step 220 that the status information is stored, the EEPROM is stored. The stored state information is read from 69 (step 230 of FIG. 5).

Then, the read state information (angle, caption language, audio) is transmitted to the navigator 67 (step 240 of FIG. 5), and the navigator 67 is the state information on the input angle and the state of the subtitle language. After recognizing the information and the status information on the audio, it becomes a ready state for reproducing the signal according to the recognized state (step 250 of FIG. 5).

In step 250, the optical disc reproducing apparatus returns to the state of the set status information, and the microprocessor 65 displays the completion of recall of the status information through the on-screen display 81 (step 260 in FIG. 5). ).

By the above process, the system completes the preparation state for playing the optical disc, and performs the playback operation in the state set by the playback command commanded by the next user. In this case, the recall completion display according to step 260 of FIG. 5 may be performed, and the playback operation may be performed. In this case, the recall key also includes the function of the playback key.

The microprocessor 65 controls the servo circuit 63, and the servo circuit 63 applies a drive signal to the optical pickup device 53 and the motor 61 so that the optical pickup device 53 receives the optical disc 51. Read the recorded signal from).

The signal read out from the optical pickup device 53 is converted into an electrical signal and outputted. The output signal is inputted to the signal processing circuit 55 and then output to the error correction circuit 57 after predetermined signal processing. The error correction circuit 57 corrects and outputs an error of the input code signal, and the output signal is temporarily stored in the VBR buffer 59. The VBR buffer 59 temporarily stores an input signal and performs input / output of data according to a method of first outputting an input signal.

The signal output from the VBR buffer 59 is input to the video decoding circuit 71 and the navigator 67 outputs system data for extracting only the video signal to the video decoding circuit 71. The video decoding circuit 71 extracts only a video signal from a reproduction signal input by the system data. In the same operation as that of the video decoding circuit 71, the graphics circuit 75 extracts a caption signal, and only the audio signal is input to the audio signal processing circuit 77.

On the other hand, when the signal output from the VBR buffer 79 is program chain data required for an interleaved reproducing operation, the navigator 77 recognizes this and outputs a control signal accordingly. That is, as mentioned above, in the angle function, the data output from the VBR buffer 59 is recognized for the selected angle as the state information for the selected angle is recognized as an operation for reproducing only the data for the selected angle. When the position data is for searching for the next block, the navigator 67 recognizes the position information recorded in the program chain data, and outputs the recognized position information to the microprocessor 65.

The microprocessor 65 controls the track jump operation of the optical pickup apparatus 53 in accordance with this positional information. Therefore, the signal read out from the optical pickup device 53 after the track jump operation becomes the next video signal for the selected angle. The signal read out from the optical pickup device 53 is transmitted to each decoding circuit through the signal processing circuit 55, the error correction circuit 57, and the VBR buffer 59, and each decoding circuit 71, 75, 77 The reproduced signal decoded at is converted into an analog signal and then displayed on the display device.

That is, the navigator 67 recognizes the state information on the selected audio, the state information on the selected subtitle, and the state information on the selected parental lock function during the optical disc 61 playback operation. When the program chain data is detected according to the state information recognized by the data output from the control, the track jump operation is performed.

By the above processes, the optical disc 51 is reproduced by a portion selected by the user according to each function. It ends.

As described above, in the optical disc reproducing method according to the present invention, selected state information on audio, subtitles, angles, and parental locks of a conventionally reproducing disc is erased with completion of the reproducing operation, and then the next reproducing operation is performed. In order to eliminate the inconvenience of having to repeatedly perform the function selection operation, the selected state information is stored in the current optical disc reproducing apparatus, and the state information recall key is used to easily form a preparation state for the reproducing operation. Invention.

Accordingly, the present invention has the advantage of providing the user with convenience of operation by allowing the user to watch the image with a desired function without performing unnecessary selection operation according to each function.

Claims (4)

A first step of storing state information set by a user according to recording characteristics of a recording medium; A second step of monitoring key signal input for recall of status information; And a third step of recognizing the state information stored in the first step to the system upon inputting the recall key signal in the second step. The method of claim 1, And the state information stored in the first step is angle, subtitle, audio, and parental lock information. The method according to claim 1 or 2, The parental lock information of the state information stored in the first step is selectively stored by a user. A first step of storing state information set by a user according to recording characteristics of a recording medium; A second step of monitoring key signal input for recall of status information; And a third step of recognizing the state information stored in the first step to the system upon inputting the recall key signal in the second step, and then performing a reproducing operation.