KR100654494B1 - Method for controlling digital versatile disc player by command through the communcation interface - Google Patents

Abstract

The present invention provides a digital video display device (DVD) and a DVD (Digital Versatile Disc) player connected and connected by using a digital communication interface such as IEEE 1394, so that the operation of the DVD player can be controlled by the digital video display device. Define a command set, and according to the defined command set, the DVD player using the digital communication interface for controlling the operation of the DVD player corresponding to the command transmitted from the digital video player through the IEEE 1394 interface A control method comprising: a step of receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command relating to reproduction of a DVD storing a plurality of programs; And three steps of performing a predetermined operation according to the interpreted command, and by controlling a function and operation according to the characteristics of the DVD through a communication channel such as IEEE 1394, future connection use. It is a very useful invention that makes it possible to easily control the operation of a DVD player in this surely expected digital video display device.

Digital Communication Interfaces, Command Sets, Operators, Operands, DVDs

Description

Method for controlling digital versatile disc player by command through the communcation interface

1 shows the overall configuration of a system to which a control method of a DVD player using a digital communication interface according to the present invention is applied,

2 to 17 show the respective opcodes and operands for the command set used in the control method of the DVD player using the digital communication interface according to the present invention.

※ Explanation of code for main part of drawing

1: Optical disc 2: Optical pickup (P / U)

3: demodulation unit 4: scrambler

5: Selective output unit 6: Data separator

7,8,9: Decoder 10: Presentation Engine

11,12: D / A Converter 13: Navigation Manager

14 PS / TS converter 15,21 IEEE 1394 interface

22: interface controller 23: demux

24,25: Decoder 26,27: D / A Converter

100: key input means

The present invention provides a digital video display device (DVD) and a DVD (Digital Versatile Disc) player connected and connected by using a digital communication interface such as IEEE 1394, so that the operation of the DVD player can be controlled by the digital video display device. A DVD player using a digital communication interface defining a command set and controlling the operation of the DVD player according to a command transmitted from the digital video display device through the IEEE 1394 interface according to the defined command set. It relates to a control method.

In the A / V device using a conventional analog system, there is no control method and means for controlling the interaction between the A / V device and other A / V devices connected and connected to each other. In order to control, the user has to input a separate operation control key to the A / V device, but the A / V device using the current digital method, for example, a digital audio data recording medium In the Compact Disc (CD) or Mini Disc (MD) player, the IEEE 1394 interface, which is a digital communication interface, is used to connect and connect with other A / V devices, and the command set defined in advance in the standard ( Command Set) to control digital data transmission and operation between the A / V devices.

Meanwhile, DVD (Digital Versatile Disc, DVD), a digital multifunctional disc that is expected to be widely spread in the future, is a large-capacity, high-density recording medium that is currently undergoing a concrete standardization process. It is anticipated that a DVD player will be used by connecting a digital television (D-TV, hereinafter referred to as D-TV) capable of high-definition video display using an IEEE 1394 interface.

However, the command set between the DVD player and the D-TV connected and connected using the IEEE 1394 interface as described above, in particular, a command set for controlling the operation of the DVD that provides various functions unlike the conventional optical disc is still defined. Therefore, there is an urgent need for a command set definition and a control method according thereto.

Accordingly, the present invention was created to solve the above problems, and defines a command set for controlling the interaction between a DVD player and a digital video display device connected using an IEEE 1394 interface. The method of controlling a DVD player using a digital communication interface to perform various operations and functions of a DVD player in accordance with a command transmitted from the digital video display device according to a defined command set is provided. It is.

According to an aspect of the present invention, there is provided a control method of a DVD player using a digital communication interface, the method comprising: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command relating to reproduction of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command associated with searching for a DVD that stores a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command associated with a menu of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to a history of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to button selection and execution of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to audio of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command relating to a photographing angle, an aspect ratio, and a sub-image of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

In addition, the control method of the DVD player using another digital communication interface according to the present invention comprises the steps of: receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to a parental level setting of a DVD storing a plurality of programs; And three steps of performing a predefined operation according to the interpreted command.

The control method of the DVD player using the digital communication interface according to the present invention, which is made as described above, adds or newly defines each command set corresponding to various functions and operating characteristics provided by the DVD in advance, and When a user selects and inputs an operation and a function of a desired DVD player through a digital video display device connected to an IEEE 1394 interface, the digital video display device sends a corresponding defined command to the DVD player via the IEEE 1394 interface. And the DVD player performs an operation and a function corresponding to the transmitted command, thereby connecting the operation and function of the desired DVD player using a communication channel such as an IEEE 1394 interface. Easily selectable control from your device It will be possible.

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

Fig. 1 shows the overall configuration of a system to which a control method of a DVD player using a digital communication interface according to the present invention is applied, and shows a DVD player and a D-TV as an embodiment.

1 shows an optical disc (DVD) 1, an optical pickup (P / U) 2 for reading recording data from the optical disc, and a demodulation section 3 for demodulating and error-correcting the read data. And a scrambler (Scrambler or Copy Protect System) 4 for adding a copy protection code to the output data of the demodulator, and a selective output unit 5 for selectively outputting an output path of the data to which the copy protection code is added. The program stream output from the selective output unit is divided into presentation (PT) data and navigation data (NV), and the divided presentation data PT is further divided into audio, video, and sub-pictures. A data parser 6 for splitting / outputting the data into data; each decoder 7, 8, and 9 for decoding the separated audio, video, and subpicture data according to attributes; and the decoded audio, Video and Subpick Presentation engine (10) for combining digital data and outputting digital audio and video signals, and D / A converters (11, 12) for converting and outputting the digital audio and video signals into analog audio and video signals, respectively. And a navigation manager 13 which receives the navigation data NV separated from the data separator 6 and controls the read operation of the optical disc to perform an operation corresponding to a key input of the user, and A PS / TS converter 14 for converting output data output from the selective output unit 5, that is, a program stream (PS) into a transport stream (TS), and the converted transport stream ( A DVD player (S1) comprising an IEEE 1394 interface unit (15) for transmitting TS and navigation data (NV) to the D-TV (S2);

IEEE 1394 interface unit 21 for receiving a data stream transmitted from the DVD player S1, that is, a transport stream TS and navigation data NV, and a transport stream received from the interface unit 21 ( Demux 23 for demuxing and outputting TS and audio and video data, and decoders 24 and 25 for decoding and outputting the separated and output audio and video data as digital audio and video signals, respectively. ) And D / A converters 26 and 27 for converting and outputting the digital audio and video signals into analog audio and video signals, and a user for outputting a control signal corresponding to a user's key input. D-TV (S2) comprising the interface controller 22,

It is shown that the user key input means 100 for controlling the operation of the DVD player (S1) and the D-TV (S2).

For reference, the PS / TS converter may be configured in the D-TV (S2) or connected to the outside according to a design, and may also packetize the output data of the data separator 6 into a TS. In this case, a separate PS / TS converter may not be used.

Referring to the operations of the DVD player S1 and the D-TV S2 configured as described above, first, when data recorded on the optical disc DVD is read by the optical pickup (P / U) 2, The recording data is demodulated and error corrected by the demodulation section 3, and then a copy protection code is added by the scrambler 4, inputted to the selection output section 5, and the selection output section ( Separated by 5) and input to the data processing section 6 and the PS / TS converter 14, respectively.

The data input to the data processor 6, that is, the program stream PS, is separated and output as audio, video, and subpicture data, respectively, so that the decoders 7, 8, 9, the presentation engine 10, and the D / The program stream PS is converted into audio and video signals by the A converter and output, while the program stream PS input to the PS / TS converter 14 is connected to the transport stream TS, which is a data format that can be processed by the D-TV S2. After conversion to the recording format, it is transmitted to the D-TV S2 via the IEEE 1394 interface unit 15 and output.

In addition, the transport stream TS transmitted as described above is sound and video by the demux 23, the decoders 24 and 25 and the D / A converters 26 and 27 configured in the D-TV S2. The transport stream TS is displayed as a signal, and is transmitted in an isochronous data packet structure having isochronous property, and the navigation data NV and the DVD stream S1 are transmitted from the DVD player S1. The user selection key selected from the D-TV S2, i.e., a command for controlling the navigation data operation of the DVD player S !, has an asynchronous data packet structure having asynchronous. Each is transmitted.

Therefore, the navigation manager 13 of the DVD player S1 controls the operation of the DVD player S1 so that a control operation corresponding to the user interface command selected by the D-TV S2 is performed. With respect to each command set defined for controlling the operation of the DVD player S1 in the D-TV S2 and the operation control of the DVD player S1 accordingly, with reference to the accompanying drawings. It explains in detail.

First, FIG. 2 shows a command set defined for selectively controlling various playback operations provided in a DVD. As shown in FIGS. 2A and 2B, playback of a DVD storing a plurality of programs is shown. Operands for controlling DVD playback operations, such as normal playback operations on a normal optical disc, on a playback operation code (Opcode: Operation Code, Play (0xC3)) for controlling operations (operand [1] to [4]). And operands for controlling various playback operations provided in the DVD, namely title play (Title_Play), part title play (PTT_Play: Part of Title Play), and time play (Time_Play) (operand [4], [5]). Define.

Accordingly, when the user inputs a title number for selecting and designating any one of a plurality of recording programs recorded on the DVD 1, i.e., a plurality of titles, via the D-TV S2, the DVD is entered. The player S1 performs a playback operation from any title start position selected by the user according to a command transmitted from the D-TV S2 via the IEEE 1394 interface, or the user has a title number and a partial title number. If (PTT Number) is selected and input, the playback operation is started from the recording position corresponding to the specific part in the selected arbitrary title.

In addition, when the user selects and inputs a title number and detailed hour information (HMSF: Hour Minute Second Frame), the playback operation is performed from the recording position corresponding to the selected title and time information.

FIG. 3 shows a command set defined for selectively controlling various search operations provided in a DVD. As described above, a search operation code (Search (0x50) for controlling a playback operation of a DVD storing a plurality of programs is described. Operands [operand [1] to [5]) for controlling DVD search operations, such as general search operations on a conventional optical disc, and time search (Time_Search), which are various search operations provided by the DVD, Operands for controlling partial title search (PTT_Search), previous program search (PrevPG_Search; Previous Program Search), top program search (TopPG_Search; Top Program Search), and next program search (NextPG) (operand [5]) Define. For reference, as shown in (a) of FIG. 3, when another type of search operation is enabled, new operands may be further defined.

Accordingly, while the user is playing any one of a plurality of titles recorded on the DVD 1 through the D-TV S2, the user inputs and selects time information to search for a desired recording position. Then, the DVD player S1 stops the current playback operation according to the command transmitted from the D-TV S2 via the IEEE 1394 interface, and then selects a recording position corresponding to the selected input time within the same title. When the user selects and inputs a partial title number (PTT Number), the current playback operation is stopped, and then the recording position corresponding to the selected partial title number is searched in the same title.

In addition, when the user selects and inputs the previous program search (PrevPG_Search) defined as described above, the current program is stopped and the previous program that has been played in the same program chain (PGC), that is, the associated program. When searching for the program start position and selecting Top program search (TopPG_Search), the current playback operation is stopped and the current program start position is searched in the same program chain (PGC). If Next_Next is selected and entered, the current playback operation is stopped and then the starting position of the next program is searched in the same program chain (PGC).

FIG. 4 shows a command set defined for selecting any one program chain among a plurality of program chains (PGCs) provided in a DVD. In FIG. 4, information about program chains provided in a DVD storing a plurality of programs, that is, FIG. In addition, the program chain selection operation code GoUp (0x60) and operands [operand [0], newPGCN) for selecting any one program chain in the program chain information (PGCI) are newly defined.

Accordingly, when the user selects and inputs any desired program chain number (PGCN: PGC Number) in the program chain information PGCI provided from the DVD 1 via the D-TV S2, the DVD player (S1) stops the playback operation for the program chain currently being reproduced according to the command transmitted from the D-TV (S2) via the IEEE 1394 interface, and then restarts from the first program of the program chain of the corresponding input number. Perform the playback operation.

FIG. 5 shows a command set defined to allow various operation menus provided on a DVD to be selectively displayed on a screen, and any one of various operation menus provided on a DVD storing a plurality of programs is shown. Menu operation codes (Menu_Call (0x61)) and operands (operand [0], Menu_ID) for selection and display are newly defined.

Accordingly, the user can select any one of various operation menus provided on the DVD 1 to be displayed on the screen through the D-TV S2. As shown in FIG. When the user selects a title menu via the D-TV (S2), the DVD player (S1) according to the command transmitted from the D-TV (S2) via the IEEE 1394 interface, the DVD (1) The title menu screen data for selecting a plurality of titles recorded on the menu screen) can be transmitted to the D-TV 2 to display the title menu screen on the D-TV S2, or the user When the Root menu is selected and inputted, the DVD player S1 displays a plurality of root data recorded on the DVD 1 according to a command transmitted from the D-TV S2 via the IEEE 1394 interface. (2), the route menu screen is displayed on the D-TV (S2). In addition, when a user selects and inputs an audio menu, a subpicture menu, an angle menu, and a partial title menu, each corresponding menu screen is displayed on the D-TV (S2). Likewise, it is possible to easily select and input a desired operation on each menu screen displayed on the D-TV (S2).

Fig. 6 shows a set of commands defined for the selection control of the return operation provided in the DVD, and shows a history for returning to the title playback or search mode previously performed in the menu display and selection mode described above. Resume The operation code (Resume (0x62)) and operands (operand [0], TT_DOM) are newly defined.

Accordingly, when the user selects and inputs a Title Domain (TT_DOM: Title Domain) during the menu display and selection mode provided to the DVD 1 through the D-TV S2, the DVD player S1 is an IEEE 1394 interface. According to the command transmitted from the D-TV (S2) through the operation to return to the previously performed title domain, that is, the title playback or search mode.

Fig. 7 shows a command set in which key selection values of a shift button for selecting various operations and menus provided by a DVD can be selected by a shift button, and various menu screens not provided in a conventional optical disc. A button selection operation code (Button _select (0x63)) and operands (operand [0], Button_ID) are newly defined to easily move a highlight portion on the screen.

Accordingly, the user highlights the menu screen displayed on the D-TV S2 by using a shift button provided in the key input means 100 such as a remote controller, for example, a volume control button and a channel selection button. When the part is moved up, down, left, and right, the DVD player S1 recognizes a corresponding operation according to a command transmitted from the D-TV S2 through the IEEE 1394 interface, that is, a command value corresponding to the highlighted part. do.

FIG. 8 shows a command set defined for selecting and executing a control value of a portion highlighted on a menu screen provided on a DVD, and highlighted on various menu screens provided on a DVD storing a plurality of programs. A button execution operation code (Button_Activate (0x64)) and operands (operand [0], Button_ACT) for selecting and executing the control value of the specified part are newly defined.

Accordingly, when the user selects a menu screen displayed on the screen of the D-TV S2, in particular, a control value of the currently highlighted portion, the DVD player S1 transmits the D-TV S2 via an IEEE 1394 interface. According to the command transmitted from the control unit, the control value of the selected highlight portion is recognized and the corresponding operation is executed.

FIG. 9 illustrates a command set in which a key value of a numeric key recognizable in the DVD player S1 is defined. Recognizing a key value of a numeric key limited to a standard so as to be recognizable in the DVD player S1. New selection button operation code (Button_Select (0x65)) and operands (operand [0], Button_Number) are newly defined.

Accordingly, in the DVD player S1, the number that a user can directly input through the D-TV S2 is limited to 1 to 36, and the user selects the highlighted menu to select the D-TV S2. The menu is displayed on the screen.

FIG. 10 shows a command set defined for releasing the Still mode in the DVD player S1. The DVD player S1 releases a still mode, that is, a still mode for outputting still images, The still release operation code (Still_Off (0x66)) and the operands (operand [0], Still_Off) for switching to the regeneration operation mode that has been performed are newly defined.

Accordingly, when the user selects and inputs the still mode operation currently operating on the DVD player S1 through the D-TV S2, the DVD player S1 transmits from the D-TV S2 through the IEEE 1394 interface. In response to the command, the still mode that is the current operation mode is canceled and then the playback mode that is the previous operation mode is switched.

Fig. 11 shows a command set defined for selectively reproducing a plurality of different languages provided in a DVD, for example, any of a plurality of different languages provided for recording according to the DVD standard. A menu language selection operation code (Menu_Language_Select (0x67)) and operands (operand [0] to ...) for selecting and playing any one language among the language menu (Menu_Language) displayed on the screen of the D-TV (S2). [2]) is newly defined.

Accordingly, when the user selects and inputs Language Code 1 (Language Code # 1) through the D-TV (S2), the DVD player (S1) is connected to a command transmitted from the D-TV (S2) via the IEEE 1394 interface. Accordingly, language menu data is transmitted to the D-TV (S2) so that any one of the languages of the different countries currently provided on the DVD can be selected on the D-TV (2) screen, (S2) The language menu is displayed on the screen, and when the user selects any one specific language on the language menu, the language is reproduced and output.

In addition, when a language of another country other than the multi-language language is recorded on the DVD, as shown in FIG. 11, another operand (operand [2] or operand [3]) is used to correspond to the corresponding language. Menu display and selection playback are performed.

FIG. 12 shows a set of commands defined for selectively reproducing various audio data streams recorded on a DVD, and includes audio data streams corresponding to a plurality of different languages as described above, or different types. Audio data stream For example, an audio stream change operation code for changing and reproducing an audio data stream of one of audio data streams recorded in MPEG 2 format, ACH 3 format and mono / stereo format during playback. (Audio_Stream_Change (0x68)) and operands (operand [0], Audio Stream Number) are newly defined.

Accordingly, the audio stream number corresponding to the audio data stream of the desired language or type (Audio Stream Number '0' to '7') by the user using a menu or a numeric key displayed on the screen through the D-TV S2. When the input is selected, the DVD player S1 selects and outputs audio of a language or type corresponding to the command transmitted from the D-TV S2 through the IEEE 1394 interface.

FIG. 13 shows a command set defined for selectively reproducing a plurality of subpicture data streams recorded on a DVD, wherein any one of a plurality of different subpictures, i.e., a subpicture data stream corresponding to a sub-picture, is selected. During reproduction of the picture data stream, a subpicture stream change opcode (Sub-Picture_Stream_Change (0x69)) and an operand (operand [0]) for changing to another subpicture data stream and selectively overlaying the changed subpicture data stream , [1]) is newly defined.

Accordingly, the sub-picture stream number corresponding to the desired sub-picture data stream (Sub-Picture Stream Number '0' to '31') by the user using a menu or a numeric key displayed on the screen through the D-TV S2. Or '0' to '63'), the DVD player S1 changes and selects the corresponding subpicture data stream according to the command transmitted from the D-TV S2 via the IEEE 1394 interface. In this case, the user controls not to display (0x01) or display (0x01) the subpicture data stream of the specific number selected by using an operand (operand [1], Display flag '0x00' or '0x01'). To do it.

FIG. 14 shows a command set defined for selectively reproducing video data streams of various angles recorded on a DVD, and the nine angles of recording provided according to the DVD standard, that is, the same During playback of any one video data stream of different video data streams of the same content simultaneously shot with nine cameras at different angles, the subject is changed to a video data stream shot at different shooting angles (Angle). The shooting angle change operation code (Angle_Change (0x6A)) and the operands (operand [0], Audio Number) are newly defined.

Accordingly, by using the menu or numeric keys displayed on the screen through the D-TV (S2), the shooting angle number corresponding to the video data stream of the desired shooting angle (Angle) (Angle Number '1' to '9'). ), The DVD player S1 selects and outputs a video corresponding to the shooting angle according to a command transmitted from the D-TV S2 through the IEEE 1394 interface.

FIG. 15 shows a command set defined for selecting a parental level provided by a DVD, and is a parental level provided by a DVD storing a plurality of programs, that is, a parental level for limiting playback operation according to a set level. Define a new restriction level operation code (Parental_Level_Select (0x6B)) and operands (operand [0], Parental level).

Accordingly, the user uses the menu or numeric keys displayed on the screen through the D-TV (S2) to display the parental level number corresponding to the desired parental level (Parental level '1' to '8' or '1' to ' 0xF '), the DVD player S1 sets the parental control level according to the command transmitted from the D-TV S2 via the IEEE 1394 interface, so that adult programs can be used for children or teenagers. Limit the playback operation to prevent unauthorized playback.

Fig. 16 shows a command set defined for selecting various aspect ratios provided in a DVD, and an aspect ratio change operation code (Video_Presentation_Mode_Change (0x6C)) for selecting and setting an aspect ratio provided in a DVD storing a plurality of programs. And an operand (operand [0], Mode).

Accordingly, the user can use the menu displayed on the screen through the D-TV S2 or the numeric keys to set the desired aspect ratio, for example, as shown in FIG. When the selection is made, the DVD player S1 changes the output screen ratio to 6: 4 so as to output a wide screen according to the command transmitted from the D-TV S2 through the IEEE 1394 interface. Alternatively, when the user selects a letter box or pan scan, the screen of the playback image transmits and outputs video data having a corresponding aspect ratio to the D-TV (S2).

FIG. 17 shows a command set defined for selecting various types of karaoke audio output modes provided in a DVD, and is a karaoke change operation for changing various karaoke output modes provided in a DVD storing a plurality of programs. The code Karaoke_Audio_Presentation_Mode_Change (0x6D) and the operands [operand [0], [2]) are newly defined.

Accordingly, the user uses a karaoke output menu or a numeric key displayed on the screen through the D-TV S2 to select a desired karaoke output mode, for example, as shown in FIG. 17B. When an arbitrary audio channel is selected from the channel (ACH: Audio Channel), the DVD player S1 changes the audio channel currently being reproduced and output according to a command transmitted from the D-TV S2 through the IEEE 1394 interface. For example, if the user selects bit 3 using an operand (Operand [2]), the audio data streams recorded in audio channels # 3 and # 1 are selected. Then, according to the mixing selected by the user, the data stream of each selected audio channel is mixed ('1': don't mix) to be reproduced or outputted or not mixed ('0': don't mix). action Performed.

In this way, each command set corresponding to various functions and operating characteristics provided in the DVD is added or newly defined, and the operation and function of the DVD player desired by the user are connected to the IEEE 1394 interface. In the case of selective input via a display device, the digital video display device transmits a corresponding defined command to a DVD player via the connected IEEE 1394 interface, and the DVD player corresponds to the transmitted command. By performing the corresponding operation and function, it is possible to selectively control the operation and function of the desired DVD player in the digital video display device connected to the communication channel such as the IEEE 1394 interface.

In the control method of the DVD player using the digital communication interface according to the present invention as described above, a command set for controlling the interaction between the DVD (DVD) player and the digital video display device connected using the IEEE 1394 interface In particular, the digital video display that can be expected to be used in future connection by controlling the function and operation according to the characteristics of the DVD (DVD) provided in the DVD storing a plurality of programs through a communication channel such as IEEE 1394. It is a very useful invention that makes it easy to control the operation of a DVD player in a device.

Claims (23)

Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command relating to reproduction of a DVD storing a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 1, In the first step, the user's interface command received through the communication channel is a command for requesting reproduction from any one title or a specific recording position in any title among a plurality of titles recorded on the DVD. A control method of a DVD player using a digital communication interface. The method of claim 1, In the step 1, the user's interface command received through the communication channel is a command for requesting playback from the start position of any one of a plurality of program chains (PGC) recorded on a DVD (DVD). Control method of DVD player using digital communication interface. The method of claim 1, In the first step, the user interface command received through the communication channel is a command for switching to a playback mode from the still image (Still) output mode provided to the DVD (DVD) Control method of the player. Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command associated with searching for a DVD that stores a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 5, In the first step, the user's interface command received through the communication channel is a command for requesting a search for any one title or a specific recording position in any title among a plurality of titles recorded on the DVD. A control method of a DVD player using a digital communication interface. The method of claim 5, In the first step, the user interface command received through the communication channel is a command for searching for a start position of a program currently being played or a start position of a before and after program in a program chain PGC recorded on a DVD. A control method of a DVD player using a digital communication interface, characterized in that. Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command associated with a menu of a DVD storing a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 8, In the step 1, the user interface command received through the communication channel, the DVD player using a digital communication interface, characterized in that the command to select the display of any one of a plurality of menus provided on the DVD (DVD) Control method. method. The method of claim 8, In the first step, the user interface command received through the communication channel is a command for selecting a menu language from among a plurality of menu languages provided on the DVD (DVD). Control method of the player. Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to a history of a DVD storing a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 11, In the step 1, the user interface command received through the communication channel is a command for requesting to return to the previous operation mode by using the history function provided in the DVD (DVD) Control method of DVD player using. delete delete Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to audio of a DVD storing a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 15, In the first step, the user interface command received through the communication channel is a command for selecting and changing any one audio data stream among a plurality of different audio data streams recorded on a DVD (DVD). Control method of DVD player using interface. The method of claim 15, In the first step, the user interface command received through the communication channel is a command for selectively mixing and outputting a data stream of any audio channel among a plurality of different audio channels recorded on the DVD (DVD) Control method of DVD player using digital communication interface. Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command relating to a photographing angle, an aspect ratio, and a sub-image of a DVD storing a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 18, In the first step, the user's interface command received through the communication channel selects and changes the video data stream recorded at any one shooting angle among a plurality of video data streams recorded at different shooting angles on the DVD. A control method of a DVD player using a digital communication interface, characterized in that the command. The method of claim 18, In the first step, the user's interface command received through the communication channel is a command for selectively changing the video output of any one aspect ratio among the video output of the different aspect ratio provided to the DVD (DVD) Control method of DVD player using digital communication interface. The method of claim 18, In the first step, the user interface command received through the communication channel is a command for selectively reproducing any one sub-video data stream among a plurality of different sub-video data streams recorded on the DVD. A method of controlling a DVD player using a digital communication interface. Receiving an interface command of a user through a communication channel; Interpreting, from the received command, an operation control command related to a parental level setting of a DVD storing a plurality of programs; And And a three step of performing a predefined operation according to the interpreted command. The method of claim 22, In the first step, the user interface command received through the communication channel is a command for selecting and changing any one parental level among the multi-level parental level provided to the DVD. Control method of DVD player using digital communication interface.

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