KR100288923B1 - Common Key Input Method of Video Sound System - Google Patents

Abstract

The present invention relates to a key input sharing method and apparatus in a video sound apparatus, and more particularly, to a key input sharing method and apparatus that can use one key input with two or more functions.

Key input sharing method of the present invention comprises the steps of determining whether the input key has one or more functions; Analyzing the currently recognized control data when the input key has one or more functions; Selecting a function of a key input by the analysis; And performing the function of the selected key.

Description

Method and device for common input of video sound device

The present invention relates to a key input sharing method and apparatus in a video sound apparatus, and more particularly, to a key input sharing method and apparatus that can use one key input with two or more functions.

Video sound apparatuses such as television and audio require a series of key inputs to reproduce a video or sound desired by a user. For example, in the case of a television, the user can watch a broadcast of a desired channel by selecting the power key and setting the size of the channel and the volume. Also, in the case of audio, a series of key selection processes from selecting a power key for inputting power to audio, inserting a tape or music CD to be played, and selecting a play key to select and play the desired music. Need this.

Like this, in all video and audio devices, the music or video desired by the user

A series of key selection steps are required before playback. Thus, the video sound apparatus is provided with key input means according to key input necessary for displaying and outputting a desired image or sound.

In general, the key input means is integrally formed with the video sound apparatus to transmit a key input selected by the user to the control means of the video sound apparatus through a wire, and the control means determines which function the input key input requires. Awareness was controlled accordingly. Recently, for the convenience of use, a video sound device and a remote control device capable of transmitting a signal remotely are included in most video sound devices.

The remote control device refers to a device for remotely transmitting a signal to adjust the operation of the system even if the remote control device has a predetermined distance from the video sound device. Therefore, in order to be able to transmit a signal with the remote control apparatus, the video sound apparatus must have a receiver, and the signal received by the receiver is a command instructed by the control means of the video sound apparatus.

However, the key input means and the remote control apparatus of the video sound apparatus so far have set a key according to the function whenever one function is required, and the key according to the function is selected when necessary and the function is performed. For example, the pause function of the screen is performed by the pause key, and there is a scan key that moves to select a desired image or music.In addition, a key according to each function is used for functions that can be performed in a video sound apparatus such as a volume control key. Was provided.

However, digital versatile discs, which have recently emerged as the next generation recording media, have a large storage capacity of 4.7 GByte when recording on a single side, and are manufactured with various system specifications that record media could not have so far.

These system specifications can be used to record up to nine angle screens for one output screen, secondly for up to eight languages with voice, and up to 32 subtitles with subtitles, and thirdly for multiple programs. There are a variety of system features of the digital multi-function disc, including a parental lock function to protect the obscene scenes from children.

Therefore, in the image reproducing apparatus for reproducing the digital multifunction disc, a key selection process for setting a desired menu among system specifications such as angles, languages, and subtitles of the digital multifunction disc is required more than in the conventional image reproducing apparatus.

1 is a block diagram showing the configuration of a general DVD player.

Looking at the configuration, the disc medium records data for one or more video titles and records data according to functions such as up to 9 angles, 8 audios, 32 subtitles, and parental locks for each video title. (1) and. The optical pickup device 3 for reading the data recorded on the disk medium 1, the motor 11 for rotating the disk medium 1, the motor 11 and the optical pickup device 3; A servo circuit 13 for applying a drive signal and a microprocessor 15 for controlling the operation of the servo circuit 13 are included.

There is a key input unit 16 for inputting a key signal to the microprocessor 15. The key input unit 16 includes a menu key for selecting a series of keys to reproduce a desired title in a desired form. After selection of the menu key, the user has a selection key for each function so as to be able to select a desired function for functions such as angle, audio, subtitle, and parental lock in the digital multifunction disc.

In addition, each function has a left and right up and down navigation keys to select a specific one from a plurality of provided, and also has a number key, power on / off key, playback key and the like in the general key input means.

The DVD playback apparatus inputs an output signal of the signal processing circuit 5 and a signal processing circuit 5 for high frequency signal processing the signal read out from the optical pickup device 3 to correct an error generated in the bit stream. Digital signal processing unit 7 for digital signal processing such as a variable transmission rate buffer for adjusting the transmission speed between the output signal of the digital signal processing unit 7 and the input signal of the video decoding circuit 21 (hereinafter referred to as " VBR " Buffers ″.

In addition, there is a navigator 17 that exchanges control signals for data transmission with the microprocessor 15 and performs overall control necessary for signal processing of data output from the VBR buffer 9. That is, the navigator 17 recognizes the navigation data used as the control signal in the output signal of the digital signal processor 7 and directly performs the necessary control or transmits the recognized control signal to the microprocessor 15. Therefore, the navigator 17 has a program set to perform a control operation for the playback of the DVD, and performs the control according to the playback of the DVD by the set program and the navigation data output from the digital signal processor 7. .

The video decoding circuit 21 performs signal processing of video data under the control of the navigator 17, the sub picture decoding circuit 25 performing signal processing of subtitle data, and the signal processing of audio data. An audio decoding circuit 27 is included. And a digital / analog converter 23 for mixing the data output from the video decoding circuit 21 and the sub picture decoding circuit 25 so as to be output on the screen and converting the data into an analog signal. Similarly, the digital analog converter 29 performs digital / analog conversion processing of the audio signal output from the audio decoding circuit 27.

On-screen display 31 performs signal processing of all character data including menu data described in the present invention and mixes the signal processed signal with the video signal output from the digital / analog converter 23 to output the mixed signal. ) Is included.

FIG. 2 illustrates a screen that is displayed on a screen when a function such as angle, audio, subtitle, and parental lock is selected by the key input unit 16 shown in FIG. 1. 3 is a flowchart illustrating operations according to a series of key selection processes required to play a conventional DVD.

Next, an operation process according to a key input process in a conventional video sound apparatus will be described with reference to the accompanying drawings.

The disc medium 1 is mounted on a turntable, and a play key is selected to play the mounted disc medium 1. When the microprocessor 15 recognizes that the key selected by the user is a playback key, the processor 15 reads data from the disk medium 1 through the optical pickup device 3. The data read from the optical pickup device 3 is subjected to high frequency signal processing in the signal processing circuit 5 and then input to the digital signal processing unit 7 to perform digital signal processing. The video decoding circuit 21, the sub picture decoding circuit 25, and the audio signal processing circuit 27 are inputted through the VBR buffer 9 under the control of the navigator 17. The video data, the caption data, and the audio data inputted to each decoding circuit are decoded into the original signal and then converted into an analog signal and displayed.

Meanwhile, among the data output through the VBR buffer 9, the navigation data used to control the reproduction of the disc medium 1 is input to the navigator 17 through the signal processor 5 and the digital signal processor 7. do. The navigator 17 decrypts the input navigation data and controls the disc medium 1 according to the contents of the navigation data.

In this way, while the disc medium 1 is being played back, the user wants to select a specific title from a plurality of titles recorded on the disc medium 1, or plays it in a desired form in an angle, audio, subtitle, or the like function. When the user wants to perform the operation, the user selects a key having a desired function in the key input unit 16 (step 100 of FIG. 3).

At this time, the selected key signal is transmitted to the microprocessor 15, which is input to the navigator 17 again. The navigator 17 analyzes the function of the key transmitted from the microprocessor 15, and controls the optical pickup device 3 to read information on the selected key from the disk medium 1.

The information on the key is contained in the button information table in the navigation data, and this button information table is shown in FIG.

The button information table includes button position information, adjacent button position information, and button commands. The button position information includes a button color number of the button,

The rectangular area (X-axis, Y-axis range) in which the button is displayed, and the action mode of the button are defined. The adjacent button position information defines button numbers located on the top, bottom, left, and right sides. The button command defines a command to be executed according to the button number.

As an example, when the user selects a menu key in the key input section 16, the navigator 17 first reads the button information table in the navigator data reproduced from the disc medium 1. A part corresponding to a button (menu) is found in the button information table, and the button position information, adjacent button position information, button command, etc. of the corresponding part of the button (menu) are read.

However, since the button (menu) is simply a key according to a function, the button information table according to the button (menu) will include only button position information and a button command portion. That is, the adjacent button position information corresponding to the menu does not exist.

As another example, when the key selected by the user is a direction key indicating one of up, down, left, and right directions, the navigator 17 can look up adjacent button position information in the button information table shown in FIG. In the adjacent button position information, since up, down, left, and right button numbers of directions to be moved are recorded from where the current highlight is located, the navigator 17 can know a button number of a direction to be moved later. will be. Such an arrow key may be used to move a highlight to a desired angle by using the arrow keys, for example, when a particular angle is desired to be selected from a plurality of angles. In addition, when selecting a specific audio from a plurality of audio, and when setting a function such as a parent lock, the direction key is used.

As a result, when the key selected by the user is a key having a specific function such as a menu key, a pause key, and a playback key, the button position information and the information corresponding to the button command can be obtained from the button information table. When the key selected by the user is a direction key for moving in the up, down, left, and right directions, the button position information, the adjacent button position information, and the information corresponding to the button command can be obtained from the button information table.

Thus, the navigator 17 reads information on the key selected by the user from the button information table, and executes a function on the key. If the key recognized in step 100 is a function key for performing a specific function, the navigator 17 executes the contents indicated by the command of the key (step 104 of FIG. 3). Therefore, when the input key is a function key, only a button command for the function key exists in the button information table.

However, when the key recognized in the step 100 is the direction key (step 102 of FIG. 3), the navigator 17 can recognize adjacent button position information from the button information table (step 106 of FIG. 3). Therefore, the navigator 17 reads the button number of the direction to be moved using the adjacent button position information (step 108 of FIG. 3), and then performs a highlight movement operation (step 110 of FIG. 3).

Accordingly, in the conventional video sound apparatus, the key input unit 16 includes direction keys and respective function keys, so that the user selects the required key from the key input unit 16. Therefore, in this case, the navigator 17 only needs to analyze the input key and perform the operation accordingly.

Thus, the conventional video sound apparatus must further include a direction key for moving in the up, down, left, and right directions together with the function keys required by the playback apparatus of the disk medium 1 in the key input unit 16. Therefore, since the key input unit of the main body of the remote control apparatus and the video sound apparatus requires at least four direction keys and a plurality of function keys, there is a problem in that the material cost increases with difficulty of design.

The above-mentioned conventional problem means that a new function key must be continuously added to the key input portion of the video sound apparatus and the key input portion of the main body portion whenever a new function is added on the system.

Therefore, the present invention is intended to add a function of key input to various other functions by using one key to have one or more functions and using a key of the current key input unit.

Accordingly, an object of the present invention is to provide a method and apparatus for sharing a key input of a video sound apparatus capable of sharing various functions using a single key.

1 is a block diagram showing a hardware configuration of a general video sound apparatus;

Fig. 2 is an illustration of menu screens such as angles, audio, and the like in a DVD;

3 is a flowchart illustrating an operation process according to a key input in a video sound apparatus according to the prior art;

4 is an exemplary diagram showing a button information table included in navigation data;

5 is a flowchart illustrating an operation process for sharing a key input in a video sound apparatus according to a first embodiment of the present invention;

6 is an exemplary view of an initial menu screen of a DVD.

7 is a flowchart illustrating an operation process for sharing a key input in a video sound apparatus according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: digital multifunction disc 3: optical pickup device

5 signal processing circuit 7 digital signal processing unit

9: VBR buffer 11: motor

13: servo circuit 15: microprocessor

16: key input unit 17: the navigator

21: video decoding circuit 23,29: digital analog converter

25: graphics circuit 27: audio signal processing circuit

31: On Screen Display

In order to achieve the above object, a key input sharing method according to the present invention includes determining whether an input key has one or more functions; Analyzing the currently recognized control data when the input key has one or more functions; Selecting a function of a key input by the analysis; And performing the function of the selected key.

In order to achieve the above object, a key input sharing apparatus according to the present invention includes: key input means including a plurality of keys having one or more functions set as one key; Control means for analyzing the currently recognized control data and determining the function of the input key when a key having one or more functions is selected; And signal processing means for performing a function of the key determined by the control means.

A key input sharing method of a video sound apparatus according to a first embodiment of the present invention is to use a direction key in common with a key having a specific function (hereinafter referred to as a 'trick key').

Thus, the first embodiment of the present invention checks that the highlight information, the button number for the movement direction of each key, and the button command exist in the button corresponding to the button number on the current button information table. When all the conditions of the branch are satisfied, the direction key is used.

A key input sharing method of a video sound apparatus according to a second embodiment of the present invention is to use a selection key such as an angle, a subtitle, audio, and the like in a DVD playback apparatus using one key.

Thus, the second embodiment of the present invention is a process in which one key sequentially defines audio, subtitles, and angles, determines whether there are two or more selectable streams in a currently defined function, and selects a desired stream. After proceeding, let's define the following functions:

Hereinafter, a method and apparatus for sharing a key input of a video sound apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

5 is a flowchart illustrating a key input sharing method of a video sound apparatus according to a first embodiment of the present invention. In addition, the necessary hardware configuration in description is demonstrated with reference to FIG.

In the key input sharing method according to the first embodiment of the present invention, the up, down, left, and right direction keys are shared with a trick key (pause key, scan key) and the like. Therefore, in the first embodiment, when a key is input from the user, the navigation data according to the input key should be analyzed to determine whether the input key is a direction key or a trick key.

First, a user mounts a disc medium 1 to be played on a turntable, and performs a series of key selection processes for playing the disc medium 1. When the disc medium 1 is mounted on the turntable, the navigation data recorded in the initial portion of the program area of the disc medium 1 is read by the optical pickup device 3 and input to the navigator 17 through a signal processing circuit. do. At this time, the navigation data input to the navigator 17 is used as control data for reproducing the disc medium 1.

By the above process, the navigator 17 is ready to perform the playback of the currently mounted disk medium 1, and then performs a series of key selection processes for playing the disk medium 1. In particular, in the case of a digital multifunctional disc such as a DVD, a process for setting a desired value for various system specifications of the DVD itself is required.

Therefore, a digital multifunctional disc such as a DVD allows an initial menu screen to be displayed for setting a function required for the initial playing of a disc or selecting a title. Thus, after the disk medium 1 is mounted, the user selects a menu key from the key input unit 16. The selected key is input to the microprocessor 15 to determine whether it is a key having one or more functions, and when the key is set to only one function, which function is analyzed. When the microprocessor 15 recognizes that the input key is a menu key for displaying the menu screen by the analysis, the navigator 17 reads the positional information on which the information on the menu screen is recorded, and the optical pickup device ( Move 3) to the read position.

Subsequently, under the control of the microprocessor 15 by the read position information, the optical pickup apparatus 3 is moved to the position where the information on the initial menu screen is recorded, and then the data read from the optical pickup apparatus 3 is After the high frequency signal is processed in the signal processing circuit 5, it is transmitted to the digital signal processing unit 7.

The digital signal processor 7 digitally processes the input signal and transmits it to the video decoding circuit 21 through the VBR buffer 9. The video decoding circuit 21 decodes the input signal and transmits the original signal to the on-screen display 31 through the digital-to-analog converter 23. The on-screen display 31 performs a text signal processing so that the input signal can be displayed on the screen, and the process up to now is performed to display the menu screen as shown in FIG.

Meanwhile, in the process of displaying the menu screen as described above, the navigator 17 controls reproduction of the menu screen among the data output through the VBR buffer 9, and controls necessary by the user's request for the displayed menu screen. The navigation data used for the input is input, that is, the navigation data is input to the navigator 17 through the signal processor 5 and the digital signal processor 7. The navigator 17 decodes the input navigation data and recognizes the decoded navigation data while the display on the menu screen is performed. Therefore, when the control of the menu screen is required, it is instructed to perform this by the recognized navigation data.

When the menu screen as shown in FIG. 6 is displayed by such a process, the user can use a series of keys for setting the desired function for each system specification (angle, audio, sub-picture, or parent lock). Perform the selection process. That is, the setting process of each function is performed by using a direction key for moving the highlight on the displayed menu screen.

For example, when the audio setting process is to be performed, a process for moving a highlight located at an arbitrary position of a menu screen to an item of audio should be performed first. Therefore, if the highlight is located at the angle, the key input section 16 to select the downward direction key, the highlight should move the audio.

However, in the present invention, since the direction key is set to be used in common with the trick key, is the downward direction key also used in common with the trick key having an arbitrary function. Therefore, even if the user selects a key as a downward direction key, the microprocessor 15 does not know which of the two functions of the input key is required, so the first input key performs a function. The process of determining whether to require.

That is, when an arbitrary key set to one or more functions is input from the key input unit 16, the microprocessor 15 transmits the input key to the navigator so as to determine what function the input key is. . The navigator 17 performs a process of determining whether a key transmitted from the microprocessor 15 is a key of a function from the navigation information recognized in the process of displaying the menu screen.

Meanwhile, the navigation information recognized by the navigator 17 during the process of displaying the menu screen includes control information necessary for controlling the menu screen currently displayed on the screen. The navigation information includes highlight information for selecting a button included in the menu screen.

In addition, the navigation information includes a button information table for each button (angle, audio, sub-picture, and parental lock) included in the menu screen. The button information table includes button position information, adjacent button position information and a button command as shown in FIG. The button position information defines a button color number of the button, a rectangular area (X-axis, Y-axis range) on which the button is displayed, an action mode of the button, and the like. And the stamp button position information defines the button numbers located on the top, bottom, left and right. The button command defines a command according to the button number.

Therefore, the navigator data for the displayed menu screen includes button position information recording the position of each button such as menu screen, angle, audio, sub-picture, and parent lock, and audio in the downward direction of the angle. Angles are located in the upper direction of the audio, and adjacent button position information recording that there is a sub-picture in the lower direction of the audio, and commands of each button such as angle, audio, sub-picture, and parent lock are recorded. The button command being executed is included.

Thus, when the user inputs a downward direction key for moving the highlight from angle to audio on the menu screen (step 200 of FIG. 5), the navigator 17 displays the highlight information in the navigator data which he or she currently recognizes. It is determined whether there is (step 202).

Then, the angle (button) at which the highlight is currently located is recognized from the button information table included in the navigation data, and the button position information, the adjacent button position information, the button command, and the like for the button (angle) are read. Then, it is recognized that the key selected in the step 200 includes a function for moving the highlight downward, and it is determined whether another button number is located in the downward direction of the angle (button) (step 204). .

In this case, since the button information according to the angle includes button (angle) position information and button (angle) command portion, and adjacent button position information indicating position information of audio located downward of the button (angle), The condition of step 204 is satisfied.

After the condition of the step 204 is satisfied, it is determined whether there is a button command according to the button number detected in the step 204 (step 206). The determination in step 206 is because the command to be executed by the button corresponding to the button number is recorded in the button command. When all the conditions up to step 206 are satisfied, the navigator 17 determines that the input key is a downward direction key and transmits the determined information to the microprocessor 15.

Accordingly, the microprocessor 15 recognizes that the key selected by the user is a down direction key according to the information determined by the navigator 17. And perform the function (step 208).

In this way, after the highlight is moved from the angle to the audio on the menu screen shown in FIG. 6, a screen after setting the audio as shown in FIG. 2B is displayed on the image display device. In the audio setting step, as described in the foregoing process, the function of the input key is determined and performed based on the navigation data currently recognized by the navigator 17.

For example, in order to select a specific audio (KOREAN) from the plurality of audios displayed in FIG. 2 (b), the position of KOREAN should be moved to a highlight located anywhere on the screen. At this time, the key input unit 16 needs to move the highlight light by the direction key, and thus the selected direction key is a key that is used in conjunction with other functions, so that the analysis of the navigator information on the button where the highlight is currently required is required. .

That is, assuming that the highlight is located on ENGLISH on the menu screen for the current audio setting, and when the user inputs an arbitrary key for moving the highlight on the menu screen of the audio (step 200 of FIG. 5), The navigator 17 determines whether there is highlight information in the navigator data which is currently recognized (step 202).

When the condition of the step 202 is satisfied, the navigator 17 recognizes the ENGLISH in which the current highlight is located in the button information table included in the navigation data, button position information for the button ENGLISH, Read adjacent button position information, button commands, and the like. From the read button information table, it is determined whether there is a button number corresponding to a direction in which the key input in step 200 should be moved (step 204).

Since the button information according to ENGLISH includes button position information, button position information, and adjacent button position information indicating the position information of the core located in the lower direction of the button position, The condition of step 204 is satisfied.

Next, it is determined whether there is a button command to be executed according to the button number detected in step 204 (step 206).

When all the conditions up to step 206 are satisfied by the above process example, the navigator 17 recognizes that the key input in step 200 is a direction key for moving the highlight downward, and the determined information is a microprocessor. Deliver to (15). The microprocessor 15 performs control according to the information determined by the navigator 17 (step 208).

In this way, after the highlight is moved from ENGLISH to KOREAN on the audio setting screen, when the enter key is input from the key input unit 16, the microprocessor 15 sets the audio according to the system specification to KOREAN.

By repeatedly performing such a 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 sub picture decoding circuit 25 for the selected subtitle language. Control for the ready state so that the subtitle data applied in the selected language can be processed. For the angle and the parental lock, the state information is recognized 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 disc medium 1 is performed.

The reproducing process of the disc medium 1 reads data from the disc medium 1 through the optical pickup device 3 under the control of the servo circuit 13. The data read from the optical pickup device 3 is subjected to high frequency signal processing in the signal processing circuit 5 and then input to the digital signal processing unit 7 to perform digital signal processing. The VBR buffer 9 is input to the video decoding circuit 21, the sub picture decoding circuit 25, and the audio decoding circuit 27 under the control of the navigator 17. The video data, the caption data, and the audio data inputted to each decoding circuit are decoded into the original signal and then converted into an analog signal and displayed.

Of the data output through the VBR buffer 9, the navigation data used to control the reproduction of the disc medium 1 is input to the navigator 17 through the signal processor 5 and the digital signal processor 7. . The navigator 17 decrypts the input navigation data and performs control of the disc medium 1 under the command of the navigation data.

During the playback of the disc medium 1 by the above process, the user functions from the key input unit 16 two or more (direction keys for moving the highlight in a specific direction and a trick key having an arbitrary function). If any key having a key is selected, the microprocessor 15 performs a key input determination process for determining which function the selected key requires to perform as described above.

As an example, when the user selects an arbitrary key having a function of a pause key and a direction key in a specific direction, the selected key is input to the microprocessor 15 (step 200). When a key having two or more functions is input, the microprocessor 15 first determines whether there is highlight information in the navigation data currently recognized by the navigator 17 (step 202).

If the condition of step 202 is satisfied, as a next step, the button information label included in the navigation data recognized by the navigator 17 is adjacent to the direction to be moved which the key input in step 200 has. It is determined whether there is button position information (step 204).

In general, adjacent button position information included in the navigation data is included when there is a button number at a position to move the highlight up, down, left, and right by the direction keys. Therefore, when the user inputs the key according to step 200 for pausing the screen during playback of the disc medium 1, the button information table in the navigation data for information displayed on the image display apparatus is displayed in step 204. The adjacent button position information to be found cannot be found. That is, the condition of step 204 may not be satisfied. If the step 204 is not satisfied, the step 206 may not be satisfied.

Therefore, in this case, the navigator 17 recognizes that the key input in step 200 is a pause key for pausing the screen, and makes the microprocessor 15 recognize that the key input in step 200 is a pause key. The microprocessor 15 recognizes that the key input in step 200 is not a direction key but a pause key based on the information received from the navigator 17, and performs the function of the key (step 210).

That is, according to the first embodiment of the present invention, when an arbitrary key used in common with the direction key is input, it is checked whether the highlight information is among the first currently recognized navigation data, and the button information in the second navigation data. After checking whether there is adjacent button position information (button number) according to the direction to move in the table, check whether there is a button command corresponding to the third button number, and whether the input key is a direction key or a key of a specific function. To judge.

Next, an operation process for sharing a key input in a video sound apparatus will be described with reference to FIG. 7 attached to the second embodiment of the present invention.

In the case of a digital multifunctional disc such as a DVD, a process for setting the desired value for various system specifications of the DVD itself is required. In particular, the second embodiment of the present invention is an embodiment in which function keys such as angles, audios, sub-pictures, and the like, in a digital multifunction disc are used as one key.

Therefore, when an arbitrary key including all functions such as angle, audio, sub-picture, etc. is input from the key input unit 16 (step 300 of FIG. 7), the microprocessor 15 sequentially executes the function for the input key. As you define, the process of setting to the button you want is performed.

First, the microprocessor 15 corresponds to audio, angle, and sub-picture in the program chain information (hereinafter referred to as 'PGCI') included in the navigation data read from the disk medium 1 recognized by the navigator 17. It is determined whether the control data exists (step 302 of FIG. 7).

When the control data for the specification of the system is present in the PGCI information in step 302, the key input in step 300 is defined as audio (step 304).

When defined as an audio in step 304, the navigator 17 applies the position information on the audio menu screen to the microprocessor 15, so that the information on the audio menu screen for setting audio from the disk medium 1 is obtained. Control to read The information about the audio menu screen thus read is displayed on the image display apparatus under the control of the navigator 17. The audio menu screen displayed at this time is shown in FIG. 2B.

When the audio menu screen is displayed, the microprocessor 15 determines whether two or more streams available for the audio control data of the PGCI exist (step 306). If there are no more than two streams available in step 306, the audio setting process for the audio menu screen as shown in FIG. 2B is unnecessary (step 308).

However, when the condition of step 306 is satisfied, there are two or more available streams. At this time, the user selects a desired audio button by using a direction key on a highlight located at an arbitrary position of the displayed audio menu screen ( Step 310).

The audio setting process is performed by performing step 310, and the next microprocessor 15 defines the key input in step 300 as a sub-picture (step 312).

When the subpicture is defined in step 312, the navigator 17 applies the position information on the subpicture menu screen to the microprocessor 15, so that the subpicture menu screen for setting the subpicture from the disk medium 1 is displayed. Controls reading of information about. The information on the sub picture menu screen thus read is displayed on the image display apparatus under the control of the navigator 17. The sub-picture menu screen displayed at this time is shown in FIG. 2C.

In addition, when the subpicture menu screen is displayed, the microprocessor 15 determines whether two or more streams available for subpicture control data of the PGCI exist (step 314). If there are no more than two streams available in step 314, the subpicture setting process for the subpicture menu screen as shown in FIG. 2C is unnecessary (step 316).

However, when the condition of step 314 is satisfied, there are two or more available streams. In this case, the user selects a desired subpicture button by using a direction key on a highlight located at an arbitrary position of the displayed subpicture menu screen. (Step 318).

In step 318, the sub-picture setting process is performed, and the next microprocessor 15 defines the key input in step 300 as an angle (step 320).

Even after the angle is defined in step 320, the same process as for setting the audio or sub picture is repeatedly performed to set the angle (steps 322, 324, and 326).

Only the presence of the plurality of angles in step 322 is determined by the cell block type and the cell block mode in the cell reproduction information (C-PBI). This is because the angle is determined only after reading the control information of the cell that directly stores the data.

Only after the sequential setting process for the audio, subpicture, and angle is performed by the above process, the microprocessor 15 determines that the function of the input key in step 300 has been performed and ends.

That is, the key input sharing method according to the second embodiment of the present invention does not have a separate key for each function in a video sound apparatus having various system specifications such as DVD, but all functions are shared by one key. It is defined sequentially and can be set.

As described above, the key input sharing method of the video sound apparatus according to the present invention analyzes the navigation data for the data currently being reproduced when a key having one or more functions is input, and performs the function of the input key. It is possible to minimize the keypad included in the key input unit by determining whether to request and to perform the control accordingly. This reduces the manufacturing cost of the product and eliminates the need to add new keys whenever new features are added.

Claims (2)

Receiving at least two sequentially input keys from a user; Reading button table information included in highlight information among data reproduced from the recording medium; Confirming validity of the received user input key based on the read button table information; Determining a function of the second key sequentially input based on the confirmation result; And And performing a corresponding function based on the determined function. The method of claim 1, The second key sequentially input is a key input sharing method of a video sound apparatus, characterized in that a key for setting a system specification.