JP2005333551A - Tv receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a TV receiver in which switching is made automatically between output and non-output of TV voice and between display and non-display of character information based on whether an external voice reproducer is effective or not. <P>SOLUTION: The TV receiver comprises an antenna 101, a control section 102, an operating section 103, a TV tuner 104, an external voice output terminal 112, a speaker 113, and an LCD 114. The external voice output terminal 112 is connected with a headphone 112A. When the external voice output terminal 112 is connected with the headphone 112A, voice from the speaker 113 is muted, voice output from the headphone 112A is turned on, and a title (character information) is not displayed on an LCD 114. When the headphone 112A is removed from the external voice output terminal 112, output from the speaker 113 is turned on, voice from the headphone 112A is muted and the title (character information) is displayed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a TV receiver, and more particularly to a TV receiver that receives a TV signal including a video signal, a character information signal multiplexed on the video signal, and an audio signal.

  With the start of terrestrial digital television broadcasting, mobile devices such as mobile phones and PDAs that receive video signals, TV signals including text information signals multiplexed on the video signals, and audio signals can receive TV, and can be used outdoors. It is thought that TV viewing will be easier and familiar. However, along with this, when watching TV in a car such as a crowd, train, bus, etc., there are increasing situations in which TV sound is difficult to hear due to ambient noise, and conversely, the TV sound causes discomfort to others. . In such a case, subtitles synchronized with the video are obtained by acquiring audio data with headphones as an external audio playback device in order to avoid ambient noise and to make others uncomfortable when watching TV outdoors. It is effective to acquire character data by display, and it is considered that outdoor TV viewing can be comfortably enjoyed by properly using these.

For this reason, some conventional TV sound and character information switching techniques automatically display character information on the TV screen (subtitle display) when the TV sound is muted (see, for example, Patent Document 1). .
Japanese Patent Laid-Open No. 07-123376

  However, even if the conventional TV voice and character information switching technology is used, it is troublesome to manually select display or non-display of the character information synchronized with the TV image each time the headphones are used and not used. This is an operation.

  An object of the present invention is to provide a TV receiver capable of automatically switching between output or non-output of TV sound and display or non-display of character information depending on validity / invalidity of an external sound reproduction device.

  In order to achieve the above object, a TV receiver according to claim 1, receiving means for receiving a TV signal including a video signal, a character information signal multiplexed on the video signal, and an audio signal; First display means for displaying a video based on the screen, second display means for displaying character information based on the character information signal on the screen in synchronization with the video displayed on the screen, and the audio signal Whether or not the external audio output device is valid in a TV receiver configured to be connected to an external audio reproduction device that reproduces audio based on the audio signal. A discriminating unit for discriminating; and when the external audio reproduction device is valid, the second display unit hides the character information and the audio output unit outputs the audio. That.

  The TV receiver according to claim 2 is the TV receiver according to claim 1, wherein the second display means displays the character information and the sound output means when the external sound reproduction device is not effective. Is characterized in that the sound is not output.

  According to a third aspect of the present invention, in the TV receiver according to the first or second aspect, when the external sound reproduction device is valid, the character information is displayed and hidden by the second display means. First selection means for selecting is provided.

  According to a fourth aspect of the present invention, in the TV receiver according to any one of the first to third aspects, when the external audio reproduction device is not valid, the audio output by the audio output means, and the first And a second selection means for selecting at least one of the character information output by the two display means.

  The TV receiver according to claim 5 is a tuner for receiving a television broadcast signal obtained by multiplexing a video signal, a character information signal and an audio signal of a television broadcast program, a display means, and a character received by the tuner. Text signal processing means that multiplexes character information based on the information signal in synchronization with the video information based on the video signal and displays the information on the display means, a speaker, a connection section to which an external speaker is connected, the speaker, and the Audio output means for outputting the audio signal received by the tuner to any one of the external speakers connected to the connection section, and the audio output means according to whether or not the external speaker is connected to the connection section And control means for controlling the output processing of the audio signal by the video signal processing means and the multiplex processing of the character information by the video signal processing means in conjunction with each other. And it features.

  6. The TV receiver according to claim 6, wherein the control means outputs the audio signal to the speaker when the external speaker is not connected to the connection section. And the voice output means for prohibiting multiplexing of the character information and outputting the voice signal to the external speaker and multiplexing the character information when the external speaker is connected. The video signal processing means is controlled.

  According to the TV receiver of the first aspect, when the external sound reproduction device is enabled, the second display means hides the character information and the sound output means does not output the sound. The TV sound output or non-output and the character information display or non-display can be automatically switched according to the validity / invalidity of the external sound reproduction device.

  According to the TV receiver of the second aspect, when the external sound reproduction device is not effective, the second display means hides the character information and the sound output means does not output the sound. TV sound output or non-output and character information display or non-display can be automatically switched according to the validity / invalidity of the sound reproduction device.

  According to the TV receiver of the third aspect, when the external audio reproduction device is valid, the display and non-display of the character information by the second display means is selected. Can be switched.

  According to the TV receiver of the fourth aspect, when the external audio reproduction device is not effective, at least one is selected from the audio output by the audio output means and the character information output by the second display means. The voice output by the voice output means and the subtitle display can be switched to either one of these.

  According to the TV receiver of the fifth aspect, the output or non-output of the TV sound and the display or non-display of the character information can be automatically switched according to the validity / invalidity of the external sound reproducing device.

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

  FIG. 1 is a block diagram schematically showing a configuration of a TV receiver according to an embodiment of the present invention.

  1 mainly includes an antenna 101, a control unit 102, an operation unit 103, a TV tuner 104 (reception unit), an external audio output terminal 112, a speaker 113 (audio output unit), and an LCD 114 (screen). . The external audio output terminal 112 is connected to headphones 112A (external audio reproduction device).

  The TV tuner 104 receives a TV signal including a video signal, a character information signal multiplexed on the video signal, and an audio signal via the antenna 101, and the audio signal of the TV signal is input to the audio signal processing circuit 105. The signal is sent to the video signal processing circuit 106 and the character information signal is sent to the character information signal processing circuit 107, respectively. Based on the operation of the operation unit 103, the control unit 102 includes a TV tuner 105, an audio signal processing circuit 105, a video signal processing circuit 106, and a character information signal processing circuit 107 for performing audio output, video output, and character information display. In addition to the control, the menu screen display circuit 115 is controlled.

  The audio signal processing circuit 105 (second display means) sends out the TV audio signal of the TV signals received by the TV tuner 104 to the headphones 112A via the external audio output circuit 109 and the external audio output terminal 112, and the headphones 112. The TV sound is output to the speaker 113 through the built-in sound output circuit 110 (sound output means) and the TV sound is output to the speaker 113.

  The video signal processing circuit 106 (first display means) displays a video signal among the TV signals received by the TV tuner 104 on the LCD 114 via the video output circuit 111, and the character information signal processing circuit 107 is displayed on the TV tuner 104. The character information based on the character information signal in the received TV signal is displayed on the LCD 114 via the video output circuit 11 in synchronization with the video displayed on the LCD 114.

  The menu screen display circuit 115 displays menu screens for voice output, video output, and character information display on the LCD 114 via the video output circuit 111, and the user of the TV receiver looks at the menu screen and operates the operation unit. A predetermined operation is performed using 103.

  FIG. 2 is a flowchart showing character information display / non-display switching processing executed by the TV receiver of FIG.

  In FIG. 2, first, it is determined whether or not the TV receiver is receiving a TV signal (step S1). When the TV signal is not received, this processing is immediately terminated, while the TV signal is received. If the headphones 112A are connected to the external audio output terminal 112 (step S2), and the headphones 112A are connected, the TV sound of the speaker 113 is muted. (Step S6), the TV sound output of the headphones 112A is turned on (Step S7), the subtitle (character information) on the LCD 114 is not displayed (Step S8), and this process ends.

  As a result of the determination in step S2, when the headphones 112A are disconnected from the external audio output terminal 112, the output of the speaker 113 is turned on (step S3), the TV sound of the headphones 112A is muted (step S4), and the TV sound is obtained. The corresponding subtitle (character information) is displayed (step S5), and this process is terminated.

  According to the processing of FIG. 2, when the headphones 112A are connected to the external audio output terminal 112, the audio of the speaker 113 is muted (step S6) and the subtitle (character information) on the LCD 114 is not displayed (step S6). S8) When the headphones 112A are removed, the sound of the speaker 113 is turned on (step S3), and captions (character information) corresponding to the sounds are displayed (step S5). Output or non-output and display or non-display of subtitles can be automatically switched.

  FIG. 3 is a flowchart showing a headphone audio output / mute switching process executed by the TV receiver of FIG.

  The TV receiver in FIG. 1 has an operation unit 103 shown in FIG. The operation unit 103 can switch between voice output and character information display methods when the headphones are attached and when the headphones are not attached, and a menu is displayed on the LCD 114 by pressing the menu button (F).

  When the headphones are worn, this menu is displayed as follows: 1. Automatic switching, 2. Subtitle display, 3. Each item including subtitle non-display is selected, and these menu items are selected by the upper (A) and lower (B) keys of the operation buttons (FIG. 4) and determined by the SET key (E). Further, when the headphones are not worn, the above menu is displayed as shown in FIG. Automatic switching, 2. 2. voice 3. Subtitle display, The menu items are selected by using the upper (A) and lower (B) keys of the operation buttons (FIG. 4), and determined by the SET key (E).

  In FIG. 3, first, it is determined whether or not a TV signal is received (step S11). When the TV signal is not received, the present process is immediately terminated, whereas when the TV signal is received. Next, it is determined whether or not the headphone 112A is connected to the external audio output terminal 112 (step S12). When the headphone 112A is connected, subtitles are displayed in the headphone wearing output selection menu of FIG. It is determined whether (character information) display, automatic switching or subtitle (character information) non-display is selected (step S20) (first selection means). When automatic switching or 3. subtitle non-display is selected, the subtitle display is not displayed (step S22), the TV sound of the speaker 113 is muted (step S23), and the TV sound of the headphones 112A is output ( Step S24), the process ends.

  As a result of the determination in step S20, the headphone output selection menu shown in FIG. When subtitle display is selected, the subtitle corresponding to the TV sound is displayed (step S21), the TV sound of the speaker 113 is muted (step S23), and the TV sound of the headphones 112A is output (step S24). This process ends.

  If the result of the determination in step S12 is that the headphones 112A have been removed, the headphone non-wearing output selection menu in FIG. 2. Automatic switching or 3. Subtitle (character information) display 1. Audio + subtitle (character information) display, or It is determined which of the voices has been selected (step S13) (second selection means). 2. Automatic switching or When subtitle display is selected, subtitles corresponding to TV sound are displayed (step S14), the output of the speaker 113 is muted (step S15), and the sound of the headphones 112A is muted (step S19). Exit.

  As a result of the determination in step S13, 4. in the output selection menu when headphones are not attached in FIG. When audio + subtitle display is selected (step S13), subtitle information for the audio is displayed (step S16), TV audio from the speaker 113 is output (step S17), and the audio of the headphones 112A is muted (step S19). ), This process is terminated.

  As a result of the determination in step S13, the output selection when the headphones are not worn in FIG. When the sound is selected (step 13), the caption is hidden (step S18), the TV sound of the speaker 113 is output (step S17), the sound of the headphones 112A is muted (step S19), The process ends.

  According to the process of FIG. 3, when the headphones 112A are connected to the external audio output terminal 112 (YES in step S12), subtitles (character information) are displayed on the output selection menu when the headphones are attached in FIG. 5 (step S21). And subtitle (character information) non-display (step S22) are selected, so that display / non-display of subtitles can be switched as desired, and headphones 112A should be connected to the external audio output terminal 112. When it is done (NO in step S12), automatic switching or subtitle display (step S15), TV audio output by the speaker 113 and subtitle (character information) display (step S16) in the output selection menu when headphones are not worn in FIG. , As well as TV audio output, if desired, output of TV audio by the speaker 113 It can be switched on and both the display and of these curtain.

It is a block diagram which shows roughly the structure of TV receiver which concerns on embodiment of this invention. It is a flowchart which shows the character information display / non-display switching process performed by the TV receiver of FIG. It is a flowchart which shows the headphone audio | voice output / mute switching process performed by the TV receiver of FIG. It is a figure used for demonstrating the output selection menu at the time of headphone mounting | wearing of TV receiver of FIG. It is a figure used for demonstrating the output selection menu at the time of headphones non-wearing of TV receiver of FIG. It is a figure used for demonstrating an example of the operation button in the operation part 103 of TV receiver of FIG.

Explanation of symbols

Reference Signs List 101 antenna 102 control unit 103 operation unit 104 TV tuner 105 audio signal processing circuit 106 video signal processing circuit 107 character information signal processing circuit 108 external connection terminal detection circuit 109 external audio output circuit 110 built-in audio output circuit 111 video output circuit 112 external audio Output terminal 112A Headphone 113 Built-in speaker 114 LCD

Claims (6)

A receiving means for receiving a video signal, a TV signal including a character information signal multiplexed on the video signal, and an audio signal; a first display means for displaying a video based on the video signal on a screen; and the character information signal. Second display means for displaying the character information based on the screen in synchronism with the video displayed on the screen, and voice output means for outputting the voice based on the voice signal. In a TV receiver configured to be connected to an external audio playback device for playback,
And determining means for determining whether or not the external audio output device is valid, and when the external audio reproduction device is valid, the second display means hides the character information and outputs the audio output. The means outputs a sound of the TV receiver.   2. The TV receiver according to claim 1, wherein when the external audio playback device is not valid, the second display means displays the character information and the audio output means disables the audio. Machine.   3. The TV according to claim 1, further comprising: a first selection unit configured to select display and non-display of the character information by the second display unit when the external audio reproduction device is effective. Receiving machine.   2. The apparatus according to claim 1, further comprising second selection means for selecting at least one of voice output by the voice output means and character information output by the second display means when the external voice playback device is not valid. The TV receiver according to any one of 1 to 3. A tuner for receiving a television broadcast signal in which a video signal, a character information signal and an audio signal of a television broadcast program are multiplexed;
Display means;
Video signal processing means for multiplexing character information based on the character information signal received by the tuner in synchronization with video information based on the video signal, and displaying on the display means;
Speakers,
A connection to which an external speaker is connected;
Audio output means for outputting an audio signal received by the tuner to either one of the speaker and an external speaker connected to the connection unit;
Control means for controlling the output processing of the audio signal by the audio output means and the multiplexing processing of the character information by the video signal processing means in conjunction with whether or not the external speaker is connected to the connection portion. A TV receiver characterized by that.   When the external speaker is not connected to the connection unit, the control means outputs the audio signal to the speaker and prohibits multiplexing of the character information, and the external speaker is connected. 6. The TV according to claim 5, wherein the audio output means and the video signal processing means are controlled so that the audio signal is output to the external speaker and the character information is multiplexed and displayed. Receiving machine.

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