KR20070006518A - Apparatus and method for displaying a plurality of channel signal in wireless terminal - Google Patents

Abstract

A method and a device for displaying a plurality of channel signals in a wireless terminal are provided to receive and tune a plurality of wireless broadcasting signals selected by a user and display more than one of the tuned signals according to user's selection, thereby helping the user to simultaneously watch a plurality of DMB(Digital Multimedia Broadcasting) channels. A device for displaying a plurality of channel signals in a wireless terminal includes a controller(215) receiving and tuning a plurality of wireless broadcasting signals selected by a user and displaying more than one of the wireless broadcasting signals on a screen according to user's selection. The wireless broadcasting signals are satellite DMB signals or terrestrial DMB signals. The control part has one or more tuners for turning the signals according to frequency data, and a display part for displaying the selected signals on the screen by PIP(Picture In Picture) or PBP(Picture By Picture).

Description

Apparatus and method for displaying a multiple of channel signal in wireless terminal

1 is a diagram showing a network connection configuration of a DMB system according to an embodiment of the present invention.

2 is a block diagram of a DMB receiving terminal according to an embodiment of the present invention.

3 is a flowchart illustrating a method for displaying a multi-channel signal of a wireless terminal according to an embodiment of the present invention.

4A illustrates a case in which multichannel signals are displayed in a PBP scheme according to an embodiment of the present invention.

4B illustrates a case in which multiple channel signals are displayed in a PIP scheme according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

203: signal separation unit

213: display unit

215: control unit

The present invention relates to a digital multimedia broadcasting (hereinafter referred to as "DMB") service, and more particularly, to receive and tune one or more wireless broadcast signals, and to tune any one or more of the tuned wireless broadcast signals. The present invention relates to a multi-channel signal display apparatus and method for displaying a wireless DMB terminal on a screen according to selection of a.

DMB service is a broadcasting service that provides various multimedia signals such as voice and video digitally.

These DMB services can be divided into terrestrial DMB service and satellite DMB service.

Terrestrial DMB service is a service method that uses existing broadcasting program as contents and has essential facilities such as transmission facility and transmits DMB radio wave through transmission tower.

Looking further at the terrestrial DMB service, it is based on DAB (Digital Audio Broadcasting), but now offers a full range of audio, video and data services beyond radio.

Terrestrial DMB services enable multimedia, especially video transmission and reception, through MPEG-4 and video delivery protocols.

Motion Picture Experts Group-4 (MPEG-4) is an A / V (Audio / Video) standard encoding method that can transmit video even in a small bandwidth communication medium.

The advantage of terrestrial DMB service is that it delivers information to more viewers free of charge like current TV broadcasting.

Meanwhile, the satellite DMB service is provided in a band corresponding to microwaves, which is a band much higher than terrestrial waves.

Looking at the flow of satellite DMB service, the satellite DMB broadcasting center built on the ground transmits various contents, such as news, sports, and movies, through Ku-band to satellites.

Accordingly, the satellite transmits it to the terrestrial terminal through the S-band allocated for DMB.

The satellite DMB service has a relatively high frequency compared to the terrestrial DMB service, so it can accommodate much more various channels than the terrestrial DMB service and can broadcast nationwide at once.

However, these terrestrial and satellite DMB services receive and display only DMB signals for one channel at a time. Accordingly, it did not satisfy the desire of the consumer to watch multiple channels simultaneously.

Accordingly, the present invention is to solve the above problems, an object of the present invention to provide a multi-channel signal display apparatus and method for a wireless terminal to display one or more wireless broadcast signals selected by the user in the DMB system have.

According to an aspect of the present invention, a multi-channel signal display apparatus of a wireless terminal for achieving the above object, receiving and tuning a plurality of radio broadcast signals selected by a user, the radio of one or more of the plurality of tuned radio broadcast signals And a controller for displaying the broadcast signals on the screen according to a user's selection.

The wireless broadcast signal may be any one of a satellite digital multimedia broadcasting (DMB) signal and a terrestrial DMB signal.

The control unit may include one or more tuners for tuning a plurality of wireless broadcast signals selected by a user according to frequency information; And a display unit configured to display one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals on a screen according to a display method selected by a user.

The display method may be any one of a picture in picture (PIP) method and a picture by picture (PBP) method.

According to another aspect of the present invention, there is provided a multi-channel signal display apparatus for a wireless terminal, comprising: one or more tuners for tuning a plurality of wireless broadcast signals selected by a user according to frequency information; And a controller configured to display one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals in one or more areas of a screen according to a display method selected by a user.

According to another aspect of the present invention, there is provided a multi-channel signal display apparatus for a wireless terminal, comprising: at least one display unit for displaying broadcast data for different channels, respectively; One or more tuners for tuning the plurality of radio broadcast signals selected by a user according to frequency information; And a controller configured to display one or more wireless broadcast signals among the tuned plurality of wireless broadcast signals, respectively, according to the display method selected by the user.

On the other hand, a multi-channel signal display method of a wireless terminal according to an aspect of the present invention for achieving the above object, receiving a plurality of radio broadcast signals selected by the user and tuning according to the frequency information; And displaying one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals on a screen according to a user's selection.

According to another aspect of the present invention, there is provided a method for displaying a multi-channel signal of a wireless terminal, the method comprising: tuning a plurality of wireless broadcast signals selected by a user according to frequency information through one or more tuners; And displaying one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals in one or more areas of a screen according to a display method selected by a user.

According to another aspect of the present invention, there is provided a method of displaying a multi-channel signal of a wireless terminal, the method comprising: tuning a plurality of wireless broadcast signals selected by a user according to frequency information through one or more tuners; And displaying one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals according to the display method selected by the user, respectively.

Hereinafter, a multi-channel signal display apparatus and method of a wireless terminal according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network connection configuration of a DMB system according to an embodiment of the present invention.

As shown in FIG. 1, the DMB system according to the present invention includes a DMB receiving terminal 100, a DMB providing server 101, an information providing server 103, a wired network 105, a satellite network 107, and a wireless network. 109.

The wired network 105 is connected with the DMB providing server 101, the information providing server 103, the satellite network 107, and the wireless network 109. Meanwhile, the DMB receiving terminal 100 performs wireless communication with the satellite network 107 and the wireless network 109.

The wired network 105 may be the Internet, the wireless network 109 is a network for transmitting terrestrial DMB signals, and the satellite network 107 is a network for performing long distance communication with a satellite serving as a relay. .

The DMB receiving terminal 100 tunes a plurality of wireless broadcast signals received through a satellite network or a wireless network by frequency information, and displays one or more wireless broadcast signals among the tuned wireless broadcast signals on a screen according to a user's selection. do. Here, the wireless broadcast signal may be any one of a satellite DMB signal, a terrestrial DMB signal, and an information signal including any one of traffic information and weather information.

The DMB providing server 101 may transmit a DMB signal to the DMB receiving terminal 100 through the wired network 105 and the wireless network 109. This is the case for terrestrial DMB service. In addition, the DMB providing server 101 may transmit the DMB signal to the DMB receiving terminal 100 through the wired network 105 and the satellite network 107. This is the case for satellite DMB service.

The information providing server 103 transmits the information signal to the DMB receiving terminal 100 through any one of the wired network 105 and the wireless network 109, the wired network 105, and the satellite network 107.

2 is a block diagram of a DMB receiving terminal according to an embodiment of the present invention.

As shown in FIG. 2, the DMB receiving terminal according to the present invention includes a receiver 201, a decoder 205, an audio signal processor 207, a speaker 209, an image signal processor 211, and a display 213. ), A control unit 215 and a key input unit 217.

The receiver 201 includes a signal separator 203 and tunes one or more wireless broadcast signals received through an antenna through the signal separator 203.

The signal separator 203 includes one or more tuners, and tunes wireless broadcast signals selected by a user from one wireless broadcast signal received through an antenna through a tuner according to frequency information, and tunes the tuned wireless broadcast signals. The decoding unit 205 is provided. Here, the wireless broadcast signal may be any one of a satellite DMB signal, a terrestrial DMB signal, and an information signal including any one of traffic information and weather information. That is, the signal separator 203 tunes an satellite DMB signal, a terrestrial DMB signal, or an information signal including any one of traffic information and weather information according to a frequency band.

The decoder 205 separates the video signal and the audio signal from the wireless broadcast signal provided by the receiver 201. Here, the decoder 205 may be provided as many as the number of tuners included in the signal separator 203.

The key input unit 217 includes at least one or more keys such as a channel selection key and a simultaneous picture key, and generates a key input signal according to the key selection and provides the generated key input signal to the controller 215.

If the key input signal provided from the key input unit 217 corresponds to a signal according to the simultaneous screen key selection, the controller 215 selects a wireless broadcast signal to be simultaneously output on the screen through the speaker 209 or the display unit 213. Ask the user to do so.

When the user selects the wireless broadcast signal through the channel selection key of the key input unit 217, the controller 215 may output the audio signal and the video signal corresponding to the wireless broadcast signal selected by the user. ) And the image signal processor 211.

The voice signal processor 207 transmits a voice signal corresponding to the wireless broadcast signal selected by the user through the speaker 209.

The image signal processor 211 controls the display unit 213 to synthesize the image signals corresponding to one or more wireless broadcast signals selected by the user. The display unit 213 may be configured to have one or more liquid crystal display (LCD) screens. Hereinafter, for convenience of explanation, the display unit 213 is configured as one LCD.

Meanwhile, when a key input signal corresponding to the simultaneous screen selection key is received from the key input unit 217, the controller 215 requests the user to select wireless broadcast signals to be simultaneously displayed on the screen.

The controller 215 controls the image signal processor 211 such that the selected wireless broadcast signals are displayed on the screen by the display method selected by the user when the wireless broadcast signals are selected by the user.

In addition, the controller 215 controls the voice signal processor 207 to transmit a voice corresponding to the wireless broadcast signal selected by the user among the wireless broadcast signals selected to be simultaneously displayed on the screen.

Hereinafter, an operation of the multi-channel signal display apparatus of the wireless terminal shown in FIG. 2 will be described.

The controller 215 requests the receiver 201 to receive the selected wireless broadcast signals when the user selects the wireless broadcast signals to be output on the simultaneous screen from the user through the key input unit 217. Here, it should be noted that the multi-channel signal display apparatus of the wireless terminal shown in FIG. 2 supports two radio broadcast signals that can be selected by a user, but is not limited thereto.

The receiver 201 tunes the radio broadcast signals selected by the user among the radio broadcast signals received through the antenna through the tuners of the signal separator 203 according to the frequency information. In other words, the signal separator 203 tunes a broadcast signal including any one of a satellite DMB signal, a terrestrial DMB signal, traffic information, and weather information through tuners according to a frequency band. Here, in the multi-channel signal display apparatus of the wireless terminal illustrated in FIG. 2, two tuners are preferably provided in the signal separation unit 203 because it supports the case where the number of wireless broadcast signals that the user can select is two. . In this case, the radio broadcast signals tuned by the signal separation unit 203 may be the first radio broadcast signal and the second radio broadcast signal.

The controller 215 allows the user to select a wireless broadcast signal to be displayed on the screen when the wireless broadcast signals are tuned by the signal separator 203. For example, the controller 215 outputs a voice message such as "Please select a channel to display on the screen" through the speaker 209, or "Select a channel to display on the screen through the display unit 213. Text "can be displayed.

When the user selects the first wireless broadcast signal to be displayed on the screen through the key input unit 217, the controller 215 controls the decoding unit 205 to display the first wireless broadcast signal to be displayed on the screen. And separate them into voice signals.

In the multi-channel signal display apparatus of the wireless terminal illustrated in FIG. 2, the decoding unit 205 preferably includes a first decoding unit and a second decoding unit because the number of wireless broadcast signals that a user can select is two.

The first decoding unit receives the first wireless broadcast signal to be displayed on the screen from the signal separating unit 203, divides the audio signal into an audio signal, provides the audio signal to the audio signal processing unit 207, and provides the video signal to the image signal processing unit. Provided at 211.

The voice signal processor 207 transmits the voice signal provided from the first decoder through the speaker 209.

The image signal processor 211 displays the image signal provided from the first decoder through the display unit 213.

When the control unit 215 receives a key input signal corresponding to the simultaneous picture selection key from the key input unit 217 while displaying an image signal corresponding to the first wireless broadcast signal through the display unit 213, the second decoding. Control to separate the second wireless broadcast signal into an audio signal and a video signal.

Accordingly, the second decoding unit receives the second wireless broadcast signal from the signal separating unit 203, separates the audio signal and the video signal, provides the audio signal to the audio signal processing unit 207, and provides the video signal to the video signal processing unit 211. To provide.

The controller 215 requests the user to select an audio signal to be transmitted through a speaker when the second decoding unit separates the video signal and the audio signal from the second decoding unit, and the first radio broadcasting signal and the second radio signal. A request is made to select a simultaneous picture providing method for simultaneously displaying video signals corresponding to a broadcast signal. Here, the simultaneous picture providing method may be any one of a picture in picture (PIP) method and a picture by picture (PBP) method.

The controller 215 controls the voice signal processor 207 to transmit the voice signal selected by the user through the speaker 209 when the voice signal to be transmitted through the speaker is selected from the user through the key input unit 217. . In addition, when the simultaneous screen providing method is selected by the user through the key input unit 217, the display unit may display image signals corresponding to the first wireless broadcast signal and the second wireless broadcast signal according to the simultaneous screen providing method selected by the user. The image signal processor 211 is controlled to display on the display unit 213.

Accordingly, the voice signal processor 207 transmits the voice signal selected by the user through the speaker 209.

The video signal processor 211 synthesizes a video signal corresponding to the first wireless broadcast signal and a video signal corresponding to the second wireless broadcast signal, and synthesized through the display unit 213 according to a simultaneous screen providing method selected by a user. Display video signals.

4A and 4B illustrate examples of a simultaneous picture providing method for simultaneously displaying image signals synthesized through the display unit 213.

4A is a diagram illustrating a case in which multichannel signals are displayed in a PBP scheme according to an embodiment of the present invention.

As shown in FIG. 4A, the display unit 213 of the DMB receiving terminal displays an image corresponding to the first wireless broadcast signal in the first area 401 of the screen 400 by using a picture by picture (PBP) method. The image corresponding to the second wireless broadcast signal is displayed on the second area 403 of the screen 400. That is, the display unit 213 divides the entire screen into a plurality of areas according to a predetermined ratio, and displays an image corresponding to the wireless broadcast signal in each area so that the images corresponding to the plurality of wireless broadcast signals do not overlap. Display.

Meanwhile, the display unit 213 displays an image corresponding to the second wireless broadcast signal on the first area 401 of the screen 400, and displays the first wireless broadcast signal on the second area 403 of the screen 400. It is possible to display an image corresponding to.

4B is a diagram illustrating a case in which multichannel signals are displayed in a PIP method according to an embodiment of the present invention.

As shown in FIG. 4B, the display unit 213 of the DMB receiving terminal displays an image corresponding to the first wireless broadcast signal on the first area 411 of the screen 410 by using a picture in picture (PIP) method. The image corresponding to the second wireless broadcast signal is displayed on the second area 413 of the screen 410. That is, when the first area 411 of the screen 410 is selected as the main screen and the second area 413 is selected as the sub screen by the user, the sub screen overlaps at a predetermined position of the main screen. do. Here, the selection of the main screen and the sub-screen may be made together with the selection of the simultaneous screen providing method.

Meanwhile, the display unit 213 displays an image corresponding to the second wireless broadcast signal in the first area 411 of the screen 410 and the first wireless broadcast signal in the second area 413 of the screen 410. It is possible to display an image corresponding to.

Meanwhile, in the above-described multi-channel signal display apparatus of the wireless terminal, although the receiver 201 receives a plurality of wireless broadcast signals, one wireless broadcast signal received by the receiver 201 is simultaneously displayed on the screen. When there is a selection of another radio broadcast signal to be displayed, the present invention may also be applied to the case where the radio broadcast signal being displayed by receiving another radio broadcast signal selected and another radio broadcast signal selected are simultaneously displayed on the screen.

3 is a flowchart illustrating a multi-channel signal display method of a wireless terminal according to an embodiment of the present invention.

As shown in FIG. 3, the DMB receiving terminal receives and displays an arbitrary radio broadcast signal (S301). Here, the arbitrary radio broadcast signal may be any one of satellite DMB signal, terrestrial DMB signal, and information signal including any one of traffic information and weather information.

The DMB receiving terminal checks whether there is a simultaneous screen selection request from the user while displaying any radio broadcast signal (S303).

If there is a simultaneous screen selection request from the user (S303), the DMB receiving terminal requests the user to select a wireless broadcast signal to be output as the simultaneous screen through the speaker or the display unit (S305). For example, the DMB receiving terminal outputs a voice message such as "Please select a channel to display on the simultaneous screen" through the speaker, or text such as "Please select a channel to display on the simultaneous screen" through the display unit. Can be displayed.

When there is a selection of a wireless broadcast signal to be output on the simultaneous screen from the user, the DMB receiving terminal receives the selected wireless broadcast signal (S307). The selected wireless broadcast signal may be any one of a satellite DMB signal, a terrestrial DMB signal, and an information signal including any one of traffic information and weather information.

The DMB receiving terminal simultaneously displays a random wireless broadcast signal and a selected wireless broadcast signal on the screen through the display unit (S309).

The above-described multi-channel signal display apparatus and method for a wireless terminal is related to the case of displaying the multi-channel signals when one LCD screen is provided.

On the other hand, the above-described multi-channel signal display apparatus and method of the wireless terminal can be applied to the case where the display unit has one or more LCD screen.

In this case, each wireless broadcast signal may be displayed on one or more LCD screens by the user's selection. In addition, wireless broadcasting signals may be displayed in one or more areas of each LCD screen by a PBP method or a PIP method by a user's selection.

As described above, according to the apparatus and method for displaying a multi-channel signal of a wireless terminal according to the present invention, receiving and tuning a plurality of wireless broadcast signals selected by a user, and wirelessly adjusting one or more of the plurality of tuned wireless broadcast signals. By displaying the broadcast signals on the screen according to the user's selection, it is possible to provide the user with the convenience of simultaneously viewing a plurality of DMB channels.

In addition, according to the apparatus and method for displaying a multi-channel signal of a wireless terminal according to the present invention, a user can watch traffic information, weather information, and the like while watching a broadcast for each DMB channel.

Claims (19)

In the multi-channel signal display device of the wireless terminal, A multi-channel signal display of a wireless terminal including a control unit for receiving and tuning a plurality of wireless broadcast signals selected by a user, and displaying one or more wireless broadcast signals of the tuned plurality of wireless broadcast signals on a screen according to a user's selection. Device. The method of claim 1, The wireless broadcast signal, A multi-channel signal display apparatus of a wireless terminal, which is either a satellite digital multimedia broadcasting (DMB) signal or a terrestrial DMB signal. The method of claim 1, The control unit, One or more tuners for tuning the plurality of radio broadcast signals selected by a user according to frequency information; Wow And a display unit configured to display one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals on a screen according to a display method selected by a user. The method of claim 3, The display method, A multi-channel signal display apparatus of a wireless terminal, which is either a picture in picture (PIP) method or a picture by picture (PBP) method. In the multi-channel signal display device of the wireless terminal, One or more tuners for tuning the plurality of radio broadcast signals selected by a user according to frequency information; Wow And a control unit for displaying one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals in one or more areas of one screen according to a display method selected by a user. The method of claim 5, The wireless broadcast signal, A multi-channel signal display apparatus of a wireless terminal, which is either a satellite digital multimedia broadcasting (DMB) signal or a terrestrial DMB signal. The method of claim 5, The display method, A multi-channel signal display apparatus of a wireless terminal, which is either a picture in picture (PIP) method or a picture by picture (PBP) method. In the multi-channel signal display device of the wireless terminal, At least one display unit for displaying broadcast data for different channels, respectively; One or more tuners for tuning the plurality of radio broadcast signals selected by a user according to frequency information; And And a controller configured to display one or more wireless broadcast signals among the plurality of tuned wireless broadcast signals, respectively, in the one or more display units according to a display scheme selected by a user. The method of claim 8, The wireless broadcast signal, A multi-channel signal display apparatus of a wireless terminal, which is either a satellite digital multimedia broadcasting (DMB) signal or a terrestrial DMB signal. The method of claim 8, The display method, A multi-channel signal display apparatus of a wireless terminal, which is either a picture in picture (PIP) method or a picture by picture (PBP) method. In the multi-channel signal display method of a wireless terminal, Receiving a plurality of radio broadcast signals selected by a user and tuning the radio broadcast signals according to frequency information; Wow A method for displaying a multi-channel signal of a wireless terminal, the method comprising: displaying one or more wireless broadcast signals among a plurality of tuned wireless broadcast signals according to a user's selection. The method of claim 11, The wireless broadcast signal, A method for displaying a multi-channel signal of a wireless terminal, which is either a satellite digital multimedia broadcasting (DMB) signal or a terrestrial DMB signal. The method of claim 11, The display step, A method of displaying a multi-channel signal of a wireless terminal displayed by either a picture in picture (PIP) method or a picture by picture (PBP) method. In the multi-channel signal display method of a wireless terminal, Tuning a plurality of wireless broadcast signals selected by a user according to frequency information through one or more tuners; Wow A method of displaying a multi-channel signal of a wireless terminal, the method comprising: displaying one or more wireless broadcast signals of a plurality of tuned wireless broadcast signals in one or more areas of a screen according to a display scheme selected by a user. The method of claim 14, The wireless broadcast signal, A method for displaying a multi-channel signal of a wireless terminal, which is either a satellite digital multimedia broadcasting (DMB) signal or a terrestrial DMB signal. The method of claim 14, The display method, A method of displaying a multi-channel signal of a wireless terminal, which is either a picture in picture (PIP) method or a picture by picture (PBP) method. In the multi-channel signal display method of a wireless terminal comprising at least one display unit, Tuning a plurality of wireless broadcast signals selected by a user according to frequency information through one or more tuners; Wow And displaying each of the one or more wireless broadcast signals of the plurality of tuned wireless broadcast signals in the one or more display units according to a display scheme selected by the user. The method of claim 17, The wireless broadcast signal, A method for displaying a multi-channel signal of a wireless terminal, which is either a satellite digital multimedia broadcasting (DMB) signal or a terrestrial DMB signal. The method of claim 17, The display method, A method of displaying a multi-channel signal of a wireless terminal, which is either a picture in picture (PIP) method or a picture by picture (PBP) method.

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