KR20040039928A - Image display device with changing image and sound - Google Patents

Abstract

PURPOSE: An image display device for easily converting a picture and a voice is provided to listen to a voice signal when receiving a tele-web signal. CONSTITUTION: The first and second signal selecting units(200,400) select at least one or more among a normal broadcasting signal, a tele-web signal and a voice signal provided from the outside. A signal processing unit(500) recovers the signal selected in the first and second signal selecting units(200,400) as an image and a voice. An external input detecting unit(800) responds to the voice signal provided from the outside, and blocks that a voice signal included in the normal broadcasting signal is provided to the signal processing unit(500). A control unit(700) outputs at least one or more among the normal broadcasting signal, the tele-web signal and the voice signal provided from the outside to a screen and a speaker.

Description

Image display device with changing image and sound

The present invention relates to a video display device that can receive a teleweb signal, and more particularly, to a video display device that can easily switch between screen and audio when receiving a teleweb signal.

In general, teleweb broadcasting is a broadcast for realizing information necessary for viewers, such as news, weather forecasts, stock quotes, movie program guides, various game schedules, and shopping information, on a screen of a video display device such as a television through a television broadcasting network. The form displayed on the screen as a form is similar to the representation form of a web page based on the Internet. Teleweb broadcasting is inserted into a vertical synchronization section of a vertical video section (CVBS: Composite Video Burst Signal) which a video display device such as a television returns to the beginning of the screen to form a lower surface.

1 shows an example in which a teleweb broadcast is displayed on a screen of a video display device.

As shown, teleweb broadcasting can express images of high resolution unlike teletext broadcasting mainly displaying characters and simple shapes on the screen of a video display device, and selecting for selecting a menu on the displayed screen. A terminal is provided so that the menu can be selected in a manner similar to web surfing via the Internet.

2 is a block diagram of a conventional video display device for receiving a teleweb signal.

The illustrated video display device includes a tuner 10, an auxiliary tuner 11, an external audio signal input unit 12, a signal selector 20, a signal separator 30, a controller 40, and a signal processor. 50, a speaker 61, and a screen 62, and the signal processor 50 has an audio signal processor 51 and a video signal processor 62.

The tuner 10 selects a broadcast channel transmitted from a broadcast station. The auxiliary tuner 11 receives the teleweb signal included in the vertical return section of the broadcast channel selected by the tuner 10. The signal selector 20 receives an output signal from the tuner 10, the auxiliary tuner 11, and the external voice signal input unit 12, and outputs one of them to the signal separator 30.

The signal separator 30 receives the broadcast signal of the broadcast channel selected by the signal selector 20, the teleweb signal of the auxiliary tuner 11, and the audio signal from the external audio signal input unit 12. The signals are divided into signals and output to the video signal processor 52 and the audio signal processor 51 of the signal processor 50, respectively. When the viewer receives the teleweb broadcast, the signal separation unit 30 classifies the teleweb signal from the auxiliary tuner 11 into a video signal and outputs the video signal to the video signal processing unit 52. From the external audio signal input unit 12, When a voice signal is applied, the voice signal is classified into a voice signal and output to the voice signal processor 51.

The control unit 40 is a broadcast signal of the broadcast channel applied to the signal selection unit 20 and the auxiliary tuner 11 in response to a control signal generated by a remote control device (not shown) for controlling the video display device. To output any one of the teleweb signal and the audio signal from the external voice signal input unit 12 to the signal separation unit 30.

The signal processor 50 receives the output of the signal separator 30, processes the same, and outputs the processed signal to the screen 62 and the speaker 61. Accordingly, the conventional video display device may watch a regular broadcast selected by the tuner 10, receive a teleweb signal received by the auxiliary tuner 11, or receive an audio signal from the external audio signal input unit 12. Only one of listening to the speaker 61 may be performed. On the other hand, the news or music program of the regular broadcast that the viewer watches is enough to listen to the audio signal through the speaker 61, and when watching the teleweb broadcast, the viewer needs only the video information provided by the teleweb broadcast Many times. That is, a viewer cannot listen to news or music programs while watching a teleweb broadcast, and when a viewer wants to listen to a music program broadcast in a regular broadcast while watching a teleweb broadcast, there is a problem that cannot be realized.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a video display device that can be viewed by selectively combining the video and audio signals that can be received by the video display device.

1 is an example of the tele-web broadcasting is displayed on the screen of the video display device,

2 is a block diagram of a video display device for receiving a conventional teleweb signal;

3 is a block diagram according to a preferred embodiment of the video display device according to the present invention, and

4 is a perspective view of a remote control device for a video display device of the present invention.

* Description of the symbols for the main parts of the drawings *

110: tuner 120: auxiliary tuner

130: external external audio signal input unit 200: first signal selection unit

300: signal separation unit 350: three-phase buffer

400: second signal selector 500: signal processor

610: Speaker 620: Screen

700: control unit 800: external input detection unit

According to the present invention, the above object is a signal selection unit for selecting at least one or more of a regular broadcast signal, a teleweb signal, and an audio signal applied from the outside, and a signal processing unit for restoring the signal selected by the signal selection unit to video and audio. The regular broadcast signal, a teleweb signal, and an external input detector outputting a signal input from an external input detector, a signal selector, and a signal processor to block the audio signal included in the regular broadcast signal from being applied to the signal processor in response to a voice signal applied from the outside. It is achieved by a control unit for outputting at least one or more of audio signals applied from the outside to the screen and the speaker.

Preferably, the signal selector comprises: a first signal selector for selecting at least one or more of a regular broadcast signal, a teleweb signal, and an externally applied audio signal; and a signal separation for separating the regular broadcast signal into a video signal and an audio signal. And a second signal selector configured to select at least one of a video signal, a voice signal, a teleweb signal, and an audio signal from the outside.

Preferably, the apparatus further includes a three-phase buffer provided between the signal selector and the signal processor to block the output of the audio signal output from the second signal selector when the external input detector detects an audio signal applied from the outside. .

Preferably, the signal processing unit includes a video signal processing unit and an audio signal processing unit for processing the video signal and the audio signal output from the second signal selection unit to output to the screen and the speaker, respectively.

Preferably, the output signal of the video signal processing unit and the audio signal processing unit includes a video signal and an audio signal of a regular broadcast signal, a video signal of a regular broadcast and an audio signal applied from the outside, a teleweb signal and an audio signal from the outside, and One of the combination of the teleweb signal and the audio signal of the regular broadcast.

According to the present invention, the above object is a signal selection unit for selecting at least one or more of a regular broadcast signal, a teleweb signal, and an audio signal applied from the outside, and a signal processing unit for restoring the signal selected by the signal selection unit to video and audio. A normal broadcast signal, a teleweb signal output from an external input detector, a signal selector, and a signal processor to control a signal processor when a voice signal applied from the outside is applied to process a voice signal applied from the outside by the signal processor; A video display device comprising a control unit for outputting at least one or more of an audio signal applied from the outside to a screen and a speaker, comprising: a regular broadcast signal of a channel set by a numeric key and a numeric key for channel setting of the video display device; Assign one of the teleweb signals added to the regular broadcast signal to the screen. For is achieved by the screen selection key.

Preferably, the screen selection key includes a first selection key for displaying a video signal according to the regular broadcast signal on the screen and a second selection key for displaying a teleweb signal added to the regular broadcast on the screen.

Preferably, the apparatus further includes an external voice signal selection key for blocking a voice signal output from the signal separator and outputting a voice signal applied to the external voice signal input unit to the speaker.

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

Figure 3 shows a block diagram according to a preferred embodiment of the video display device according to the present invention.

The illustrated video display device includes a tuner 110, an auxiliary tuner 120, an external audio signal input unit (EXT) 130, a first signal selector 200, a signal separator 300, and a second signal selector. 400, a signal processor 500, a speaker 610, a screen 620, a controller 700, and an external input detector 800.

The tuner 110 selects a broadcast channel transmitted from a broadcast station. The auxiliary tuner 120 receives the teleweb signal included in the vertical return section of the broadcast channel selected by the tuner 110. The external voice signal input unit 130 receives a voice signal from an external device such as a compact disk player (CDP), a tape recorder, and a digital versatile disk (DVD) that can be connected to the video display device.

The first signal selector 200 selects one or two of a broadcast signal output from the tuner 110, a teleweb signal output from the auxiliary tuner 120, and an audio signal applied from the external voice signal input unit 130. . For example, if the viewer wants to simultaneously watch the news (voice) and the teleweb broadcast of the regular broadcast, the control signal (S1, S2) enable the switch (SW1, SW2) by the broadcast signal output from the tuner 110 and The teleweb signal output from the auxiliary tuner 120 is output to the signal separator 300 and the second signal selector 400, respectively. Similarly, when the viewer wants to watch the audio signal applied to the teleweb broadcasting and the external voice signal input unit 130, the switches SW2 and SW3 are enabled by the control signals S2 and S3 to enable the auxiliary tuner 120 and the external device. The teleweb signal and the voice signal respectively output from the voice signal input unit 130 are output to the second signal selector 400. Here, the switches SW1, SW2, and SW3 are enabled when the control signals S1, S2, and S3 are logic "high" to output broadcast signals and external audio signals applied to the first signal selector 200, respectively. . Thus, when the viewer wants to watch the news of the regular broadcast and the teleweb broadcast, the control signals S1 and S2 become logical "high". On the other hand, such a switch (for example, SW1, SW2) is a semiconductor switch, RF switch using a MEMS (Micro Electro Mechanical System) and control signals (for example, S1, S2, and S3) in response to a three-phase buffer (3-state buffer) It can be implemented by various methods such as.

The signal separator 300 separates the broadcast signal selected by the tuner 110 into a video signal and an audio signal. Three-phase buffer 350 is connected to the audio signal output terminal (audio) of the signal separation unit 300 to block the audio signal output from the signal separation unit 300 when a voice signal is applied to the external voice signal input unit 130. A three phase buffer is further provided. The three-phase buffer 350 is unnecessary when the input source of the first signal selector 200 of the video display device includes only the tuner 110 and the auxiliary tuner 120.

The second signal selector 400 selects and combines the video and audio signals output from the first signal selector 200 in response to the control signals S4 and S5 output from the control unit 700, and selects and combines the video and audio signals. 500). The combination of the video signal and the audio signal of the second signal selector 400 includes the video signal and the audio signal of the normal broadcast signal, that is, the reception of the normal broadcast signal, the video signal of the normal broadcast and the audio signal from the external audio signal input unit. Combination, a combination of a teleweb signal and an audio signal from the external audio signal input unit 130, and a combination of a teleweb signal (video signal) and a sound signal of a regular broadcast.

The signal processor 500 includes an audio signal processor 510 and an image signal processor 520. The signal processor 500 receives an image signal and an audio signal from the second signal selector 400 and processes the same. Output to screen 620.

The controller 700 is driven in response to a control signal (not shown) transmitted from the remote control device when the viewer operates the remote control device (not shown). The controller 700 controls the first signal selector 200 and the second signal selector 400 to finally select audio and video output from the speaker 610 and the screen 620. To this end, the control unit 700 outputs the control signals S1, S2, and S3 to the first signal selector 200, and the control signals S4, as the second signal selector 400 and the signal processor 500. S5) is output. The operation according to each control signal and the operation by the remote controller will be described later in detail.

The external input detector 800 detects the voice signal when the external voice signal input unit 130 is applied to block the voice signal output from the second signal selector 400. Accordingly, the audio signal applied to the external input detector 130 is output to the signal processor 500.

Looking at the case that can be combined in the second signal selection unit 400 for each case as follows.

First, when the video signal and the audio signal of the normal broadcast signal are combined and output to the screen 620 and the speaker 610, the control unit 700 may include the first signal selector 200 and the second signal selector ( The control signals S1 to S6 outputted at 300 become logic "high", "low", "low", "high", "high", and "high", respectively. Accordingly, the switch SW1 is short-circuited and the broadcast signal output from the tuner 110 is applied to the signal separation unit 300 to be divided into a video signal and an audio signal, and the switches SW4 and SW5 of the second signal selection unit 400. ) Is connected to contact A and contact B, respectively. Accordingly, the video signal and the audio signal of the regular broadcast signal selected by the second signal selector 400 are applied to the signal processor 500. Here, the contact point A is a terminal from which the video signal is output from the signal separator 300, and the contact point B is a terminal from which the audio signal is output from the signal separator 300.

Next, when combining the video signal of the regular broadcast and the audio signal from the external audio signal input unit 130 and outputs it to the screen 620 and the speaker 610, the control unit 700 and the first signal selection unit and The control signals S1 to S6 output to the second signal selection section become logic "high", "low", "high", "high", "low", and "low", respectively. Accordingly, the switch SW1 is short-circuited and the broadcast signal output from the tuner 110 is applied to the signal separator 300 to be divided into a video signal and an audio signal. Here, the voice signal output from the signal separator 300 is blocked by the control signal S6 and is not applied to the second signal selector 400, and the voice signal applied to the external voice signal input unit 130 is voiced. Directly applied to the input terminal of the signal processor 510 is reproduced by the speaker 610. On the other hand, when the control signal S6 has a logic " high ", i.e., even when the signal separation unit 300 outputs the video signal and the audio signal, when the audio signal is applied to the external audio signal input unit 130, the external input The detection unit 130 detects this and turns off the switch SW6 with the control signal S7 having a logic "low". That is, when the voice signal is applied to the external voice signal input unit 130, only the voice signal applied to the external voice signal input unit 130 is selected as the voice signal applied to the speaker 610.

Next, when combining the teleweb signal and the voice signal from the external voice signal input unit 130 and outputting them to the screen 620 and the speaker 610, the control signal (S1 ~ S6) output from the control unit 700 ) Become "low", "high", "high", "low", "low", and "low", respectively. Accordingly, the switch SW1 is turned open, the switches SW2 and SW3 are short-circuited, and the teleweb signal and the external voice signal are applied to the signal processor 500.

Lastly, when the teleweb signal (video signal) and the audio signal of the regular broadcast are combined and output to the screen 620 and the speaker 610, the control signals S1 to S6 output from the control unit 700 are Logic "high", "high", "low", "low", "low", and "high" respectively. Accordingly, since the switch SW4 is connected to the contact B and the switch SW5 is connected to the contact C, the teleweb signal and the audio signal of the regular broadcast are applied to the signal processor 500.

Figure 4 shows a perspective view of a remote control device for a video display device of the present invention.

The illustrated remote control apparatus 900 has a numeric key 910, a regular broadcast selection key 920, a teleweb broadcast selection key 930, and an external audio signal selection key 940.

Numeric key 910 sets the broadcast channel of the video display device. The regular broadcast selection key 920 is a key for displaying a video signal corresponding to the broadcast channel selected by the numeric keys on the screen 620. When the key 920 is selected, the control unit 700 sets the control signals S1 and S4 to logic "high" so that the output of the tuner 110 is applied to the signal separation unit 300 and the second signal selection unit. The image signal of the tuner 110 applied to the 400 is applied to the signal processor 500. In this case, the audio signal output from the signal separator 300 is also applied to the signal processor 500. Meanwhile, when the external voice signal selection key 940 is pressed in this state, the controller 700 turns off the three-phase buffer 350 connected between the signal separation unit 300 and the contact B in response thereto. Accordingly, an image according to regular broadcasting is displayed on the screen 620, and the audio signal applied to the external signal input unit 130 is processed by the voice signal processor 510 and output to the speaker 610.

On the other hand, after the predetermined broadcast channel is selected by the numeric key 910, when the teleweb broadcast selection key 930 is pressed, the control unit 700 outputs control signals S1, S2, and S3 of logic "high". The output signals of the tuner 110, the auxiliary tuner 120, and the external voice signal input unit 130 are applied to the signal separator 300 and the second signal selector 400. Also, the control signals S4 and S5 having a logic "low" are connected to the contact B and the contact C, respectively, so that the teleweb signal, the voice signal from the outside, and the signal separation unit. Only the audio signal output from the audio signal output terminal (audio) of 300 is applied to the signal processor 500. At this time, the control signal S6 applied to the three-phase buffer 350 is set to a logic " high " so that the teleweb signal and the audio signal of the regular broadcast are processed by the video signal processor 520 and the audio signal processor 510, respectively. The screen 620 and the speaker 610 are output. In this state, when the external voice signal selection key 940 is pressed, the control signal S6 of logic "low" is applied to the three-phase buffer 350 to output the voice signal output from the voice signal output terminal (audio) of the signal separator 300. And the voice signal applied to the external voice signal input terminal 130 is output to the signal processor 500, that is, the voice signal processor 510. Accordingly, the viewer can listen to the voice applied from the outside, for example, audio from an electronic device such as a CDP, DVD, tape recorder while watching the teleweb broadcast.

As described above, a viewer can listen to a news or music program of a regular broadcast while watching a teleweb broadcast on a screen, or listen to a voice signal from external audio (for example, CDP, MP3, etc.) while watching a regular broadcast on a screen.

As described above, in addition to the video signal and the audio signal according to the regular broadcast channel on the screen and the speaker provided in the video display device, the user can listen to the news or music program of the regular broadcast while vice versa. While viewing the image according to the screen can also listen to the audio signal applied from the external electronic device (eg CDP, MP3, etc.). Therefore, the viewer can apply and use the video display device in various ways in addition to the video signal and audio signal output method set in the video display device owned by the viewer.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such changes are within the scope of the claims.

Claims (8)

A signal selector for selecting at least one of a regular broadcast signal, a teleweb signal, and an audio signal applied from the outside; A signal processor for restoring the signal selected by the signal selector to an image and an audio; An external input detector for blocking a voice signal included in the regular broadcast signal from being applied to the signal processor in response to the voice signal applied from the outside; And a controller for outputting at least one or more of the regular broadcast signal, the teleweb signal, and the voice signal applied from the outside to the screen and the speaker output from the signal selector and the signal processor. And video display device easy to switch the voice. The method of claim 1, The signal selector, A first signal selector configured to select at least one of the regular broadcast signal, the teleweb signal, and the voice signal applied from the outside; A signal separator for separating the regular broadcast signal into a video signal and an audio signal; And And a second signal selector configured to select at least one of the video signal from the signal separator, the audio signal, the teleweb signal, and the audio signal from the outside. Easy video display device. The method of claim 2, It is provided between the signal selector and the signal processor, And a three-phase buffer for blocking output of the audio signal output from the second signal selector when the external signal is detected from the external input detector. Display device. The method of claim 3, The signal processing unit, And a video signal processor and an audio signal processor for processing the video signal and the audio signal output from the second signal selector to output the screen and the speaker, respectively. Video display device. The method of claim 4, wherein The output signal of the video signal processor and the audio signal processor, The video signal and the audio signal of the normal broadcast signal, the video signal of the normal broadcast and the audio signal applied from the outside, the teleweb signal and the audio signal from the outside, and the teleweb signal and the normal broadcast A video display device that can easily switch screens and audio, characterized in that any one of a combination of audio signals. A signal selector for selecting at least one or more of a regular broadcast signal, a teleweb signal, and an externally applied audio signal, a signal processing unit for restoring a signal selected by the signal selector to video and audio, and an externally applied audio signal An external input detector, the signal selector, and the regular broadcast signal, the teleweb signal, and the external signal outputted from the signal processor to control the signal processor when the signal processor is applied. In the video display device comprising a control unit for outputting at least one or more of the audio signals applied from the screen and the speaker, Numeric keys for channel setting of the video display device; And A screen selection key for assigning any one of a regular broadcast signal of a channel set by the numeric key and a teleweb signal added to the regular broadcast signal to the screen; Remote control device for video display device. The method of claim 6, The screen selection key, A first selection key for displaying the video signal according to the regular broadcast signal on the screen; And And a second selection key for displaying a teleweb signal added to the regular broadcast on the screen. 2. The method of claim 7, wherein It is easy to switch the screen and the voice, characterized in that it further comprises a; external voice signal selection key for blocking the voice signal output from the signal separation unit, and outputs the voice signal applied to the external voice signal input unit to the speaker Remote control device for one video display device.