KR100812042B1 - Digital television and Method for controlling image and volume thereof - Google Patents

Abstract

Disclosed are a digital television and a method for controlling video and audio of a digital television. The digital television according to the present invention relates to a digital television including an HDD capable of storing a broadcast signal, an external input or a program or file supplied from an external memory card, and the video mode and audio mode of a program or file stored in the HDD. Look-up table storage unit for storing information and image and audio mode information when program or file is stored in HDD and extracted in the look-up table storage unit, and image stored in look-up table storage unit when playing program or file stored in HDD And a controller for automatically outputting video and audio for each voice mode.

HDD, PVR, EPG information, extension information, lookup table storage, video / audio mode

Description

Digital television and method for controlling image and volume thereof

1 is a block diagram showing the main components of a digital television according to an embodiment of the present invention;

FIG. 2 is an exemplary view of a lookup table stored in the lookup table storage of FIG. 1; FIG.

3 is a flowchart illustrating a video and audio control method of a digital television according to an embodiment of the present invention.

<Description of Major Symbols in Drawing>

110. Tuner 113. External input

120. Control unit 130. Memory card

140.HDD 142.Lookup Table Storage

144. Key input unit 150. Video / audio mode information extraction unit

160. Video / Audio mode storage unit 170. Video / Audio mode selection unit

The present invention relates to a digital television, and more particularly, in a digital television to which an HDD is applied, it can be stored for each video and audio mode according to the genre of a program or file stored in the HDD, and can be output for each video and audio mode according to the playback. The present invention relates to a digital television and a video and audio control method.

Unlike conventionally outputting the same video and audio conditions for each program genre, in order to satisfy viewers' high demands, modern digital television supports video and audio output according to video mode and audio mode according to genre. Done. The video and audio for each mode are automatically supported or can be selected by the user.

For example, if the user sets the auto picture mode and the auto audio mode in the digital television, select the Auto picture and Auto audio item in the function selection menu, and select one of movies, news, music, and sports through the remote control or key input unit. Select a genre. Then, the image or audio is output through the display unit and the speaker by converting the resolution or the audio level setting value specified for each genre. On the other hand, in order to set the manual video mode and the manual audio mode, the user must specify both video or audio conditions.

As described above, since the manual video mode and the manual audio mode are inconvenient to be specified by the user for each program, the user usually watches the program in the auto video mode and the auto audio mode.

However, there are still some inconveniences in the automatic image mode and the automatic audio mode. That is, when the user changes the channel to the sports program while setting the automatic video / audio mode to the movie mode and watching the movie program, the user watches the sports program in the current movie mode. Therefore, in order to watch with the setting value suitable for the sports program, the user needs to change the sport mode directly by executing the automatic video / audio mode again. That is, in the conventional digital television, when the program genre during broadcasting is changed, the user still has to manually change the automatic video / audio mode.

To solve this problem, EPG (Electronic Program Guide) information is extracted from the digital broadcast received through the antenna and automatically changed to video and audio mode that meets the set genre conditions based on the extracted information. Digital television was introduced. The EPG information indicates the information of the corresponding program, and the EPG provider inserts the EPG information of the broadcast between the digital broadcast signals, and the digital television extracts the EPG information from the broadcast signals. Therefore, if the channel is changed to the sports program while watching in the movie mode, the EPG information is extracted from the changed sports program and the video and audio modes are automatically converted from the movie mode to the sport mode. Therefore, the inconvenience of the user manually changing the mode is eliminated.

However, such a digital television has a problem that it is impossible to change the mode automatically except when watching a broadcast live. That is, in a personal video recorder (PVR) digital television to which a hard disk drive (HDD) or an external memory card is applied, the EPG information cannot be obtained when storing a broadcast program or file on the HDD and playing the stored program or file. As a result, the program-specific video / audio mode cannot be automatically converted.

The present invention has been made in view of the above, the present invention is to store the video and audio mode information according to each genre when storing a program or file supplied from a broadcast signal, an external input or an external memory card in the HDD An object of the present invention is to provide a digital television and a video and audio control method for extracting stored video and audio mode information when a program or file is played and outputting the video and audio accordingly.

A digital television according to the present invention for achieving the above object is a digital television comprising a HDD capable of storing a program or file supplied from a broadcast signal, an external input or an external memory card, the digital television comprising a program or file stored in the HDD. A lookup table storage unit which stores image mode and audio mode information; And extracting video and audio mode information when the program or file is stored in the HDD and storing the image and audio mode information, and storing the video and audio mode information when the program or file is stored in the HDD. And a controller for automatically outputting video and audio for each star.

Preferably, the lookup table storage unit is installed in the HDD.

The controller may further include an EPG information extraction unit for extracting program genre information when storing a program included in a received broadcast signal or an external input in the HDD, and a file when storing a file included in an external memory card. An image / audio mode information extracting unit including an extension information extracting unit extracting genre information according to an extension name of the apparatus; When the program and file are stored, if there is extraction information by the video / audio mode information extracting unit, the extracted video / audio mode is automatically stored in the lookup table storage unit, and by the video / audio mode information extracting unit. A video / audio mode storage unit for storing the video / audio mode according to a user input when there is no extraction information, in the lookup table storage unit; And a video / audio mode selection unit for selecting a video / audio mode corresponding to the playback program or file in the lookup table storage unit, when the program or file stored in the HDD is played back.

On the other hand, the video and audio control method of the digital television according to the present invention for achieving the above object, the video and audio control of a digital television comprising a HDD capable of storing a program or file from a broadcast signal, an external input or an external memory card A method comprising: a) storing the program or file on the HDD; b) extracting EPG information or extension information when the program or file is stored; c) storing a video / audio mode according to the extracted EPG information or extension information in a lookup table storage unit; d) selecting a video / audio mode corresponding to the playback program or file in the lookup table storage unit when playing the program or file stored in the HDD; And e) outputting video and audio for each of the selected video / audio modes.

In addition, after the step b), if the EPG information or the extension information is not extracted, storing the image / audio mode by the user's input to the lookup table storage unit.

The above objects, features and other advantages of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, a digital television and a video and audio control method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a digital television according to an exemplary embodiment of the present invention includes a controller 120, an HDD 140, a lookup table storage 142, an image processor 181, and an audio processor 191.

The tuner 110 tunes a broadcast signal of a channel selected by a user among digital broadcast signals received through an antenna (not shown) and outputs the broadcast signal to the demodulator 111. Although not shown, the signal detected by the tuner 110 is converted into a signal of an intermediate frequency band through an IF amplifier. The demodulator 111 detects an analog signal of the intermediate frequency band selected by the tuner 110 as a baseband signal and converts the baseband signal into digital data in the form of a transport stream. The demultiplexer 112 separates the demodulated broadcast signal into video data and audio data. The separated image data and audio data are sent to the image processor 181 and the audio processor 191 by the control signal of the controller 120. The image processor 181 processes the image signal and outputs it through the display unit 182, and the audio processor 191 amplifies the audio signal using the amplifier 192 and outputs the audio signal through the speaker 193.

Meanwhile, as illustrated, a program received through an external input (130, digital video, component, etc.) is also controlled by the controller 120, and the image and audio are processed through the same process as described above. Is printed through).

As such, the controller 120 controls the overall output of the video and audio.

On the other hand, the present invention relates to a digital television to which a HDD (Hard Disk Drive) 140 is applied, and when storing a program received through an external input and a program of a channel selected through the tuner 110 among the broadcast signals, The program to be stored in the HDD 140. In addition, when storing a file input through the external memory card 130, it is also stored in the HDD (140). The controller 120 controls to output an image and an audio of the program or file stored in the HDD 140 when a user command is issued.

Meanwhile, the lookup table storage unit 142 is installed in the HDD 140. That is, a separate memory space is allocated on the HDD 140 to store the lookup table. The lookup table storage unit 142 stores image mode and audio mode information of each of the programs or files stored in the HDD 140. According to the exemplary embodiment of the present invention, the lookup table storage unit 142 is installed in the HDD 140, but the scope of the present invention is not limited thereto. That is, the lookup table is not necessarily stored in the HDD 140 but may be stored in a separate memory means.

2 illustrates an example of a lookup table stored in the lookup table storage 142. As shown, the video mode and the audio mode corresponding to each program or file stored in the HDD 140 are stored. That is, the video mode and the audio mode (drama mode, movie mode, sports mode, concert mode, etc.) respectively corresponding to the program or file name NAME stored in the HDD 140 are stored.

The controller 120 extracts the video and audio mode information when the program or file is stored in the HDD 140, stores the image and audio mode information in the lookup table storage unit 142, and reproduces the program or file stored in the HDD 140. The video and audio are automatically output to the display unit 182 and the speaker 193 according to the video and audio modes stored in the lookup table storage unit 142. In detail, the controller 120 includes an image / audio mode information extractor 150, an image / audio mode storage unit 160, and an image / audio mode selector 170.

The video / audio mode information extractor 150 extracts the program genre information when the program selected by the tuner 110 or the program included in the external input 113 is stored in the HDD 140. And an extension information extraction unit 152 for extracting genre information according to the extension name of the file when the file included in the external memory card 130 is stored in the HDD 140.

EPG Information Table genre Picture mode Voice mode drama drama drama Show / game concert concert Music / Ballet / Concert concert concert sports sports sports Movie / Art movie movie News / Presence news news Society / Politics / Economics news news Education / Information User selection User selection Etc User selection User selection

The EPG information extraction unit 151 extracts EPG information included in digital data in the form of a transport stream of each broadcast program or a program received through an external input. As described above, the digital data of the program includes basic information including image information and audio information, and additional information such as program characteristic information and EPG information, which is program management information. The EPG information extracting unit 151 extracts information about the program genre, in particular, as shown in Table 1 of the EPG information.

File extension information table File extension Picture mode Voice mode JPG / GIF / TIF / BMP etc news news AVI / MPG (MPEG) / DIVX / ASF, etc. movie movie MP3, OGG, etc. concert concert Etc User selection User selection

The extension information extracting unit 152 extracts genre information according to the file extension name when the file included in the memory card 130 is stored in the HDD 140.

When the program / file is stored in the HDD 140, the video / audio mode storage unit 160 looks up the extracted video and audio modes when there is information for each mode by the video / audio mode information extractor 150. To be stored in the storage unit 142.

That is, referring to FIG. 2 and Table 1, when a viewer is watching a drama called “Jumong”, the program genre also receives EPG information of “drama” among broadcast signals. At this time, if the viewer wants to store the drama "Jumong" currently being watched on the HDD 140, the EPG information extraction unit 151 of the video / audio mode information extraction unit 150 is one of the EPG information in the received broadcast signal. It will extract 'drama' information. Then, the video / audio mode storage unit 160 stores a program called 'jumong' in the lookup table storage unit 142 as a 'drama mode' in both the video mode and the audio mode.

On the other hand, referring to Figure 2 and Table 2, the video / audio mode information extraction unit, if you want to store the file "King of the King" with the "AVI" extension stored in the memory card 130 in the HDD 140 The extension information extractor 152 of 150 extracts the 'AVI' extension information. Then, the image / audio mode storage unit 160 stores the file “king man” in the lookup table storage unit 142 as a “movie mode” in both the image mode and the audio mode.

Meanwhile, when the program or file to be stored in the HDD 140 does not have the EPG information or the extension information of the file, the video / audio mode information extractor 150 may not extract the video and audio mode information. In this case, since the controller 120 does not have the video and audio mode information, the controller 120 displays the OSD text for specifying the video and audio mode, and the user inputs the video and audio mode through the key input unit 144 such as a remote controller. Then, the video / audio mode storage unit 160 stores the input video / audio mode information in the lookup table storage unit 142.

When the video / audio mode selector 170 plays back a program or file stored in the HDD 140 by a user command, the video / audio mode corresponding to the played back program or file is looked at by the lookup table storage unit 142. Select. As a result, the control unit 120 outputs a control signal to the image processing unit 181 and the audio processing unit 191 to output to the display unit 182 and the speaker 193 according to the selected image and audio mode.

Meanwhile, the video and audio output conditions according to the video and audio modes may be set automatically or may be directly set by the user.

As described above, according to the digital television according to the embodiment of the present invention, when a program or file is stored in the HDD 140, the video and audio modes of each program or file are automatically stored in a lookup table, and when the playback is performed in advance, Automatically change to video and audio mode according to the set condition to output video and audio. Therefore, there is an advantage of eliminating the need to change the video and audio modes according to the genre every time a user plays a stored program or file.

3, the operation of the digital television according to the embodiment of the present invention having the above configuration and the video and audio control method of the digital television according to the embodiment of the present invention will be described in detail.

When a command for storing the program or file is input by the user while receiving a program or file from the broadcast signal, the external input 113 or the memory card 130 (S210), the video / audio mode information of the controller 120 is input. The extraction unit 150 extracts genre information according to EPG information or file extension information from the program or file (S220).

If the program or file has EPG information or file extension information, the video / audio mode storage unit 160 of the controller 120 automatically stores the video and audio mode information according to the genre in the lookup table storage unit 142. It is made (S230). If there is no EPG information or file extension information from the program or file, the controller 120 displays the OSD text for specifying the video and audio mode because there is no video and audio mode information. When a user inputs a video and audio mode through a key input unit 144 such as a remote controller, the video / audio mode storage unit 160 stores the input video / audio mode information in the lookup table storage unit 142. (S250).

After the storage of the program or file is completed (S240), if a playback command of the stored program or file is applied from the user, the video / audio mode selection unit 170 of the controller 120 corresponds to the program or file to be played. The video and audio modes are selected by the lookup table storage unit 142 (S270).

The controller 120 controls the image processor 181 and the audio processor 191 to output the video and audio signals according to the selected video and audio modes to the display 182 and the speaker 193 (S280). .

On the other hand, when receiving a program or file from the broadcast signal, the external input 113 or the memory card 130, the program or file is simply played back and if the command for storing the program or file is not input, the program or file is played (S291). At this time, the video mode and the audio mode are output in the mode according to the previous state (S292).

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments. That is, those skilled in the art to which the present invention pertains can make many changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications are possible. Equivalents should be considered to be within the scope of the present invention.

As described above, according to the digital television and the video and audio control method according to the present invention, when a program or file is stored in the HDD, the video and audio modes of each program or file are automatically stored in a lookup table, It automatically changes to video and audio mode according to the preset condition to output video and audio. Therefore, the user's convenience is improved because the user has to change the video and audio modes according to the genres every time when playing a program or file stored in the HDD.

Claims (5)

In digital television, An HDD capable of storing a program or file supplied from a broadcast signal, an external input or an external memory card; A lookup table storage unit which stores image mode and audio mode information of a program or file stored in the HDD; And When the program or file is stored in the HDD, the video and audio mode information is extracted and stored in the lookup table storage unit. It includes a control unit for outputting video and audio, The control unit, An EPG information extraction unit for extracting program genre information when storing a program included in a received broadcast signal or an external input in the HDD, and an extension of a file when storing a file included in an external memory card in the HDD. An image / audio mode information extracting unit including an extension information extracting unit extracting genre information; When the program or file is stored, if there is extraction information by the video / audio mode information extracting unit, the extracted video / audio mode is automatically stored in the lookup table storage unit, and by the video / audio mode information extracting unit. A video / audio mode storage unit for storing the video / audio mode according to a user input when there is no extraction information, in the lookup table storage unit; And And a video / audio mode selection unit for selecting a video / audio mode corresponding to the playback program or file in the lookup table storage unit when playing a program or file stored in the HDD. The method of claim 1, And the lookup table storage unit is installed in the HDD. delete In the video and audio control method of a digital television comprising an HDD capable of storing a program or file from a broadcast signal, an external input or an external memory card, a) storing the program or file on the HDD; b) extracting EPG information or extension information when the program or file is stored; c) storing a video / audio mode according to the extracted EPG information or extension information in a lookup table storage unit; d) selecting a video / audio mode corresponding to the playback program or file in the lookup table storage unit when playing the program or file stored in the HDD; And and e) outputting video and audio for each of the selected video / audio modes. The method of claim 4, wherein after step b), And if the EPG information or the extension information is not extracted, storing the video / audio mode according to a user input in the lookup table storage unit.

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