KR100751122B1 - Screen select capable video display apparatus and control method thereof - Google Patents

Abstract

The present invention relates to a screen selectable image display apparatus and a control method thereof, and more particularly, to display a plurality of screens, and to select a screen most suitable for a user from among the plurality of screens. An apparatus and a control method thereof are provided.

To this end, in the screen selectable image display apparatus according to the present invention, a signal receiver for receiving digital and analog signals from the outside, a display unit for displaying the digital and analog signals, and for the user's screen comparison, A multi-window processing unit for signal processing so that digital and analog signals are displayed on a plurality of screens, a plurality of scalers for scaling digital or analog broadcast signals, and a plurality of screens in which the analog signals, SD signals, and HD signals are combined and displayed. Among them, it characterized in that it comprises a control unit for controlling to display at least one screen selected by the user.

Accordingly, in consideration of the visual deviation of the user generated by displaying different types of signals such as analog and digital, as well as the visual deviation of the user generated by converting the screen format of the displayed analog and digital received signals, Therefore, it is possible to provide a convenient screen selection function to the user.

Screen Selection, Analog / Digital Signals, Scaling, Multi-Window Processing, Switches

Description

Screen selectable video display apparatus and control method thereof

1 is a configuration diagram schematically showing an analog / digital television device according to the prior art.

2 is a schematic diagram of a screen selectable analog / digital television device according to one embodiment of the present invention;

3 is a block diagram schematically illustrating a controller of a screen selectable analog / digital television apparatus according to an embodiment of the present invention.

4 is a diagram for explaining screen selection according to an embodiment of the present invention.

5 is a block diagram schematically illustrating a screen selectable analog / digital television device according to another embodiment of the present invention.

6 illustrates a screen selection according to another example of the present invention.

7 is a diagram for explaining screen selection according to another embodiment of the present invention.

8 is a flowchart illustrating a method of controlling a screen selectable image display device according to the present invention.

9 is a flowchart illustrating a control method of a screen selectable image display device according to a 'compare mode for received signal types' according to the present invention.

10 is a flowchart illustrating a control method of a screen selectable image display device according to a 'scaling comparison mode' of the present invention.

FIG. 11 is a flowchart illustrating a method of controlling a screen display selectable image according to a 'compare mode according to a received signal type / scaling' according to the present invention.

12 is a diagram illustrating a screen selection mode menu window of a screen selectable image display device according to the present invention.

FIG. 13 illustrates a screen selection menu window of a screen selectable image display device according to the present invention.

<Description of the symbols for the main parts of the drawings>

210 and 310: analog signal receivers 220 and 320; Digital signal receiver

231, 331: input switch 233, 333: output switch

232, 332: scaler IC 234, 334: multi-window processing unit

235, 335: video mixer 236, 336: OSD generator

250, 350: display unit 800: screen selection mode menu window

900: screen selection menu window

The present invention relates to a screen selectable image display apparatus capable of displaying a plurality of screens and allowing a user to select a screen most suitable for the user from among the displayed plurality of screens, so that user's visual deviation can be considered and a control method thereof. will be.

In recent years, due to the rapid development of information media, data is transferred from an analog type to a digital type.

In particular, in a video display device such as a television, the desire for a digital type television is gradually increased in order to overcome the deterioration of image quality due to analog type data transmission, inefficient channel utilization due to interference between adjacent channels, and limitation of unidirectional media. It is increasing.

However, at present, the system for digital broadcasting is not completely established, and analog / digital television capable of receiving both analog and digital signals has become mainstream.

This analog / digital television device will be described with reference to FIG.

1 is a configuration diagram schematically showing an analog / digital television device 100 according to the prior art. As shown, the analog / digital television device 100 according to the related art includes an analog signal receiver 110, a digital signal receiver 120, a signal processor 130, a display unit 150, and a controller ( 140).

Here, the analog signal receiver 110 is for receiving an analog broadcast signal received from the outside through an antenna or the like. To this end, the analog signal receiver 110 includes an analog tuner 111 for tuning the received broadcast signal and an A / V decoder for decoding audio and video signals included in the tuned broadcast signal. 112).

The digital signal receiver 120 is for receiving a digital broadcast signal received from the outside through an antenna or the like. To this end, the digital signal receiver 120 includes a digital tuner 121 for tuning the received broadcast signal and a VSB (Vestigal Side-Band) for converting the received broadcast signal into a transport stream (TS). A decoder 122 and an MPEG decoder 123 for decoding the broadcast signal converted into the transport stream format into the MPEG-2 format.

The signal processor 130 includes a scaler 131, an OSD generator 133, and a video mixer 132. The scaler 131 includes analog and digital signals received through an analog and digital signal receiver as described above. The digital broadcast signal is scaled to be suitable for output to the display unit 150.

The OSD generator 133 may receive an OSD generation control signal from a controller by inputting a user key and display a predetermined OSD on the display 150.

The video mixer 132 superimposes the analog and digital broadcast signals and the OSD signal and outputs them to the display unit 150.

However, according to the above configuration, when any one of the analog and digital signal broadcast signal is received, the received broadcast signal is simply displayed on the screen via the scaler 131 and the video mixing unit 132, the user's It was not possible to provide the screen selection function that best suited the visual characteristics.

For example, not all current digital broadcasting contents are provided in HD and may be broadcast simply by converting an analog signal to an SD signal, but the user directly checks the screen of the analog signal and the SD signal having similar resolutions. There was a problem that the visual characteristics of the user were not considered because they could not be selected.

Thus, in the present invention, the user can directly check the difference in the image quality generated according to the type of the received signal and select one or more of them, as well as the image quality change caused by scaling the various types of received signals. An object of the present invention is to provide a screen selectable image display device and a method of controlling the same that can be directly checked and selected by the user.

In the screen selectable image display apparatus of the present invention for achieving the above object, a signal receiving unit for receiving digital and analog signals from the outside, a display unit for displaying the digital and analog signals, and a user's screen For comparison, a multi-window processing unit that processes the digital and analog signals to be displayed on a plurality of screens, a plurality of scalers for scaling digital or analog broadcast signals, and the analog and SD signals and HD signals are combined and displayed. Among the plurality of screens, characterized in that it comprises a control unit for controlling to display at least one screen selected by the user.

In this case, the controller controls a screen format setting unit for controlling the scaler, an image quality determining unit for determining image quality of the received signal by receiving image quality information from the PSIP decoder, and controlling a tuner of the signal receiving unit. A channel selection unit for tuning channels of analog and digital signals, an OSD control unit for controlling a predetermined OSD to be displayed on the display unit, and an input such that only a screen selected by a user is displayed on the display unit And a screen selector for controlling the output switch.

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Also, the user may select at least one or more of the screens of the plurality of scaled analog signals, select at least one or more of the screens of the plurality of scaled SD signals, or among the screens of the plurality of scaled HD signals. It is preferable to select at least one or more.

In addition, the user is configured to select one of the screens by scaling two screens in which any two signals of the analog signal, the SD signal, and the HD signal are combined, respectively, or the analog signal, the SD signal, and the HD signal. It is preferred that the signals are combined to scale each of the three screens displayed to select one or two of them.

On the other hand, in the control method of the screen selectable image display apparatus of the present invention for achieving the above object, the step of receiving digital and analog signals from the outside, and for comparing the screen of the user, the digital and analog Displaying a signal on a plurality of screens, and selecting, by the user, at least one or more screens among a plurality of screens displayed by combining the analog signal, the SD signal, and the HD signal; And displaying only the screen selected by the user.

In this case, the screen selection step may be a step of selecting any one of two screens displayed by combining any two signals of an analog signal, an SD signal, and an HD signal, or the analog signal, an SD signal, and an HD signal are combined. Preferably, the step of selecting any one or two of the three screens displayed.

The screen selecting step may include selecting at least one or more of the screens of the plurality of scaled analog signals, selecting at least one or more of the screens of the plurality of scaled SD signals, or screens of the plurality of scaled HD signals. It is preferable that it is a step of selecting at least one or more of these.

The screen selecting step may include selecting one of the screens by scaling two screens in which any two signals of the analog signal, the SD signal, and the HD signal are combined, respectively, or selecting the analog signal and the SD signal. And scaling each of the three screens displayed by combining the HD signals, and selecting one or two of them.

Hereinafter, a screen selectable image display apparatus and a control method thereof according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

However, hereinafter, an analog / digital television apparatus capable of receiving and displaying analog and digital broadcast signals will be described as an example.

2 is a block diagram schematically illustrating a screen selectable analog / digital television device according to an embodiment of the present invention, and FIG. 3 schematically illustrates a control unit of a screen selectable analog / digital television device according to an embodiment of the present invention. 4 is a diagram illustrating a screen selection according to an embodiment of the present invention.

2 to 4, the screen selectable analog / digital television device 200 according to the present invention includes an analog signal receiver 210, a digital signal receiver 220, and input and output switches 231 and 233. ), A signal processor 230 having a scaler IC 232, a multi-window processor 234, a video mixer 235, and an OSD generator 236, a display 250, and a controller 240. It is configured to include.

The analog signal receiver 210 includes an analog tuner 211 for tuning an analog broadcast signal received from the outside through an antenna and other means, and A for decoding audio and video signals included in the tuned broadcast signal. / V decoder 212 to process the received analog broadcast signal.

The digital signal receiver 220 includes a digital tuner 221 for tuning a digital broadcast signal received from the outside through an antenna and other means, and a VSB for converting the tuned broadcast signal into a transport stream TS. A decoder 222 and an MPEG decoder 223 for decoding the broadcast signal converted by the VSB decoder in MPEG-2 format, wherein the MPEG decoder 223 is a minimum information added during transmission of digital broadcasting. Includes a PSIP decoder to decode Program and System Information Protocol (PSIP) signals.

The input switch 231 is for inputting the first and second scalers 232a and 232b to be described later by switching the analog type broadcast signal and the digital type SD and HD broadcast signals, and displaying a plurality of screens for screen selection. And switching the display to display only the selected screen when the user selects any one of the plurality of screens.

The scaler IC 232 is composed of first and second scalers 232a and 232b, and each of the scalers 232a and 232b is for scaling the received analog and digital broadcast signals into a predetermined screen format.

However, scaling typically means converting the number of scan lines, contrast, hue, brightness, saturation, frames per second, or aspect ratio of analog and digital signals, It is not limited to just this, but includes a variety of other possible conversions.

On the other hand, the output switch 233 is to switch the various types of scaled broadcast signal to output to the multi-window processing unit 234 to be described later, if the user selects any one of the plurality of scaled screen, only the corresponding screen is displayed To be able to switch.

For example, the output switch 233 outputs any one of the received analog or digital broadcast signals through the first scaler 232a or the second scaler 232b, or outputs the analog and / or digital broadcast signals, respectively. Switch to output through both of the second scalers 232a and 232b.

The multi-window processing unit 234 processes the analog broadcast signal and the HD and SD digital broadcast signals to be displayed on a single display unit 250 in a plurality of screens, or the scaled broadcast signals to be displayed in a plurality of screens. It is for.

For example, the multi-window processing unit 234 processes the analog signal and the SD signal, or the analog signal and the HD signal, or the SD signal and the HD signal by multi-window signal processing to output a plurality of screens. Here, the multi-window herein refers to all of which a plurality of screens are displayed on one display unit 250 including a picture in picture (PIP), a picture out picture (POP), and a double window (DW).

The OSD generator 236 provides a predetermined menu window for selecting a plurality of screens to be displayed for screen selection and checking a plurality of displayed screens so as to select a screen most suitable for the visual characteristics of the user. do.

In addition, the label OSD (251b and 252b of FIG. 4) is provided at a predetermined position of each screen so that information of the displayed plurality of screens can be more easily understood. The label OSD (251b and 252b of FIG. 4) is for providing a kind of screen number to the user, and as the number of the plurality of screens is numbered, the screen is more easily distinguished.

The video mixer 235 superimposes the OSD signal as described above on the broadcast signal to be displayed and outputs it to the display unit 250.

As described above, the controller 240 displays the received broadcast signal in various combinations and performs overall control so that only one screen selected by the user can be displayed.

To this end, the control unit 240, as shown in Figure 3, the first and the user interface 241 for receiving a user key signal (user key) signal, and according to the user key signal (user key) signal of the user; A screen format setting unit 243 for controlling the second scalers 232a and 232b to change the number of scan lines, contrast, color, brightness, saturation, frames per second, or aspect ratio of the analog and digital signals, and decoding; The image quality determination unit 244 for determining whether the digital broadcast signal is HD or SD based on the received PSIP information, and the channel selection for controlling the analog and digital tuners 211 and 221 to select a received channel. A unit 245, an OSD control unit 246 for controlling generation of the menu window (not shown), a label OSD (251b and 252b of FIG. 4) and other OSD signals, and a combination selected by a user. Screen is displayed, or And a screen selector 247 for controlling the input and output switches 231 and 233 so that only a screen suitable for the user's visual characteristics is displayed, and a microcomputer 242 for performing a predetermined arithmetic operation and control.

According to the configuration of the present invention as described above, the user can directly select the screen of the type suitable for his visual characteristics by comparing the screen of the analog type broadcast signal and the digital type broadcast signals including the SD and HD type.

For example, when a screen corresponding to the SD broadcast signal is displayed on the display unit 250 of the analog / digital television apparatus 200, the image quality determination unit 244 receives the image quality information of the PSIP from the MPEG decoder 223 and is currently present. Determine the quality of the screen.

When the menu window is displayed by a user's key, the image quality determining unit 244 provides the OSD information to the OSD generation unit so that the current image quality information can be displayed on the menu window. In this case, the picture quality information will be SD broadcast.

If an analog type broadcast signal is selected by the user as a comparison target with the SD broadcast, the channel selector 245 selects the analog tuner 211 to tune to the analog broadcast signal having the same contents as that of the SD broadcast. To control.

Therefore, as shown in FIG. 4A, when the screens 251a and 252a and the labels OSD 251b and 252b corresponding to the SD broadcast and the analog broadcast are displayed, the user may display the two screens 251a, 252a is simultaneously checked to select a screen 251a suitable for the visual characteristics of the user. That is, one of the analog broadcast screen or the SD broadcast screens 251a and 252a is selected.

When one of the screens 251a is selected in the screen selection menu window, the controller 240 controls the input and output switches 231 and 233 to display the display unit (b) as shown in FIG. Only one selected screen 251a can be displayed on the display device 250. Hereinafter, such a mode is referred to as a 'comparison mode according to received signal types.'

In addition, according to the present invention as described above, the user can directly select the screen best suited to the user while changing the image quality for each received broadcast signal type.

As an example, when comparing screens when analog broadcast signals are converted to different screen formats, the input and output switches 231 and 233 are switched to display the analog signals on a plurality of screens.

The screen format setting unit 243 controls the first scaler and the second scalers 232a and 232b according to a user's user key to scale the analog broadcast signal, respectively. In this case, the first scaler converts color, the second scaler converts brightness, the first scaler converts the 16: 9 aspect ratio, the second scaler converts the 4: 3 aspect ratio, or saturates the first and second scalers. Various combinations are possible, such as varying the degree.

Accordingly, the user can directly select a screen having the best image quality among the plurality of analog broadcast screens (hereinafter, such a mode is referred to as a 'scaling comparison mode').

In addition, according to the present invention as described above, it is also possible to first select the screen that is most suitable for the user's visual characteristics while converting the displayed screens by selecting the broadcast signal type to be displayed and then scaling.

For example, in order to compare the analog broadcast signal and the SD broadcast signal, the analog and SD broadcast signals are first multi-windowed and displayed on a plurality of screens, and then the analog broadcast signals are converted through the first scaler 231b. 2, the scaler 231c converts the SD broadcast signal and selects a screen that is most suitable for the user's visual characteristics (hereinafter, such a mode is referred to as a 'receive signal type / scaling comparison mode').

In the above, selecting one of two screens using two scalers 232a and 232b has been described as an example. However, the present invention is not limited thereto, and it will be described that it is also possible to select at least one or more screens by displaying three or more screens.

However, hereinafter, one or two of three screens will be selected as an example, and redundant description will be omitted.

FIG. 5 is a schematic view showing a screen selectable analog / digital television device according to another embodiment of the present invention, FIG. 6 is a diagram for explaining screen selection according to another example of the present invention, and FIG. Is a diagram for explaining screen selection according to another example.

5 to 7, the analog / digital television device 300 of the present invention includes an analog tuner 311 and an A / V decoder 312 to receive analog signals from the outside. A receiver 310, a digital tuner 321, a VSB decoder 322, and an MPEG decoder 323, each of the digital signal receivers 320a and 320b for receiving a digital broadcast signal; A scaler IC 332 composed of input and output switches 331 and 333 for switching and a plurality of scalers 332a, 332b and 332c for converting the received broadcast signal into a predetermined screen format, and one display unit A multi-window processor 334 for signal processing so that a plurality of screens can be displayed on the screen, an OSD generator 336, a video mixer 335 for superposing the OSD signal and the received broadcast signal, and a controller ( 340) including back It is configured to.

As described above, FIG. 5 includes three signal receivers 310, 320a, and 320b and scalers 332a, 332b, and 332c as compared with FIG. 4, and accordingly, in case of 'compare mode by received signal type,' The user can select one or two screens by simultaneously displaying the broadcast signal, the screen corresponding to the SD broadcast signal, and the HD broadcast signal.

For example, as shown in FIG. 6A, after displaying the screens 351a, 352a, and 353a corresponding to the analog broadcast signal, the SD broadcast signal, and the HD broadcast signal on the display unit, the user displays each screen 351a. , 352a and 353a are simultaneously checked to select the HD signal screen 353a, and as shown in FIG. 6B, only the selected HD signal screen 353a can be displayed.

Although not shown, two SD and HD broadcast signal screens may be selected to display the two screens in a multi-window format.

In addition, a plurality of screens displayed to allow a user to select a screen may be displayed in the same size as shown in FIG. 6A, but as shown in FIG. 7A, one screen is a PIP. The sub screen 356a may be displayed.

Meanwhile, in the 'scaling comparison mode', any one of the received broadcast signals is applied to the first to third scalers 332a, 332b, and 332c to display a plurality of screens, and then three different broadcast signals are displayed. It is possible to select the screen of the scale most suitable for the user while converting the screen format to.

For example, the analog broadcast signal displayed on the plurality of screens is converted into colors through the first scaler 331b, brightness is converted through the second scaler 331c, and saturation is controlled through the third scaler 331d. The conversion allows the user to select a screen.

Furthermore, in the case of the 'comparison mode for each received signal type / scaling', for example, the analog broadcast signal is converted through the first scaler 332a and the SD broadcast signal is converted through the second scaler 332b. The user may select a screen while converting the saturation of the HD broadcast signal through the third scaler 332c.

In the above, after displaying the screens by various other combinations, the screen selection by the user may be possible, but more various combinations will be apparent at the level of ordinary skill in the art, and thus description thereof will be omitted.

Hereinafter, a method of controlling a screen selectable image display device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. However, hereinafter, it will be described by selecting any one screen after displaying two screens as an example. Therefore, the present invention is not limited thereto, and it will be apparent to those skilled in the art that it is also possible to select at least one or more after displaying a plurality of screens.

8 is a flowchart illustrating a method of controlling a screen selectable image display device according to the present invention.

As shown, first, when the power is applied to the analog / digital television device (S400) and an analog or digital broadcast signal is received (S410), the user can watch the received broadcast signal.

In this case, it is determined whether the line selection mode is set by a user key (S420), and if the image quality comparison mode is not set, the broadcast channel currently being received is watched (S480).

Next, while viewing the received broadcast channel, it is determined whether a channel change control signal is input by a user's key (S460) to continue watching the current broadcast channel or to watch a new broadcast channel. do.

On the other hand, if the screen comparison mode is set by the user's key (user key), a plurality of predetermined screens are displayed (S430) by the user's selection.

When a plurality of screens are displayed, the user selects one screen most suitable for his visual characteristics while simultaneously checking the plurality of screens (S440).

When one screen is selected by a user's key, the screen selector controls the input and output switches such that only a predetermined screen selected by the user is displayed (S450).

Subsequently, the channel selector monitors whether a channel change command is received by a user's key while the selected broadcast signal is being displayed (S460).

When a channel change command is received, the channel selector controls the digital or analog tuner to be tuned to the changed channel to receive the selected analog or digital broadcast signal. However, if a channel change command is not received, the broadcast channel currently being displayed is maintained.

Next, it is determined whether or not a power-off signal by a user has been input (S470) to determine whether to operate the analog / digital television device.

Hereinafter, the control method of the analog / digital television device according to the present invention will be described in more detail with reference to a case in which a comparison mode for each received signal type is set. However, hereinafter, redundant description will be omitted.

9 is a flowchart illustrating a control method of a screen selectable image display device according to a 'compare mode for received signal types' according to the present invention.

Referring to FIG. 9 with reference to FIGS. 12 and 13, first, when the screen selection mode is executed by a user's key input (S500), the screen comparison target selection menu window 800 is displayed (S510). .

When the menu window 800 is displayed and the user selects 'compare mode for each received signal type' (S520), the user may select one of the comparison target modes for each received signal type from the menu window. In this case, when the user selects any one of the screen selection modes, it will be preferable to display the description window 821 therefor.

After the user selects a comparison mode for each received signal type and selects a mode for comparing the analog broadcast signal and the SD broadcast signal by the comparison target selection unit 830 (S530a), the analog broadcast signal and the SD broadcast signal are displayed (S540a). When the mode for comparing the analog broadcast signal and the HD broadcast signal is selected (S530b), the analog broadcast signal and the HD broadcast signal are displayed (S540b), and the mode for comparing the SD broadcast signal and the HD broadcast signal is selected ( In S530c, the SD broadcast signal and the HD broadcast signal are displayed (S540c).

When the broadcast signals of the comparison mode for each received signal type selected by the user are displayed (S540a to S530c), it is determined whether to swap or not (S550) to determine whether to apply the comparison mode for each received signal type selected by the user.

If the swapping function is used, the menu window 800 requests to reselect one of the comparison target modes for each received signal type.

On the other hand, if the swapping function is not used, the user selects any one screen suitable for himself among the displayed screens (S560).

Accordingly, either one of the analog broadcast signal and the SD broadcast signal is displayed (S570a), one of the analog broadcast signal and the HD broadcast signal is displayed (S570b), or one of the SD broadcast signal and the HD broadcast signal is displayed ( S570c).

Subsequently, it is determined whether the channel is changed by the user's key (S580), and it is determined whether the power is off (S590). On the other hand, since it has already been described above it will be omitted.

Hereinafter, the control method of the analog / digital television device according to the present invention will be described in more detail with reference to a case in which a 'scaling comparison mode' is set as an example.

10 is a flowchart illustrating a control method of a screen selectable image display device according to a 'scaling comparison mode' of the present invention.

As shown, when the screen selection mode is executed by the user's key input (S600), the screen comparison target selection menu window 800 is displayed (S610). At this time, when the user selects the 'scaling comparison mode' (S620), the currently received broadcast signal is displayed on a plurality of screens (S630).

When a plurality of screens are displayed (S630), the user changes the scaling for at least one or two of the plurality of screens (S640). For example, the first screen controls the first scaler to change the color, the second screen controls the second scaler to change the saturation, or controls the first and second scalers to change the screen.

At this time, it is determined whether the scaling of each screen is completed (S650). If the scaling is not completed, the screen is continuously scaled as described above (S640), and if the scaling is completed, the user needs at least the most appropriate one. One or more screens are selected (S660).

Accordingly, only one screen whose color or saturation is changed by the user is displayed (S670).

Subsequently, it is determined whether the channel is changed by the user's key (S680), and it is determined whether the power is off (S690).

Hereinafter, the control method of the analog / digital television apparatus according to the present invention will be described in more detail with reference to a case in which a comparison mode for each received signal type / scaling is set.

FIG. 11 is a flowchart illustrating a method of controlling a screen display selectable image according to a 'compare mode according to a received signal type / scaling' according to the present invention.

When the screen selection mode is executed by the user's key (S700), the screen comparison target selection menu window is displayed (S710). At this time, when the user selects 'compare mode for each received signal type / scaling' (S720), the user first selects a comparison mode for each received signal type from a menu window.

That is, either the mode (S731a) for comparing the analog broadcast signal and the SD broadcast signal, the mode (S731b) for comparing the analog broadcast signal and the HD broadcast signal, or the mode (S731c) for comparing the SD broadcast signal and the HD broadcast signal. Choose one.

Accordingly, a plurality of screens corresponding to the selected mode are displayed. For example, the analog broadcast signal and the SD broadcast signal S732a, the analog broadcast signal and the HD broadcast signal S732b, or the SD broadcast signal and the HD broadcast signal S732c are displayed on a plurality of screens, respectively.

At this time, it is determined whether or not swapping (S733) to determine whether to apply the comparison mode for each received signal type selected by the user. If the swapping function is used, the menu window 800 requests to reselect one of the comparison target modes for each received signal type.

On the other hand, if the swapping function is not used, while the screens corresponding to any one mode are displayed as described above, the user selects a comparison mode for each scaling.

Accordingly, the user changes the screen format through the first and second scalers (S740a) for the analog and SD screens, or changes the screen format through the first and second scalers, respectively, for the analog and HD screens ( S740b) or change the screen format through the first and second scalers for the SD and HD screens (S740c).

In this case, it is determined whether or not scaling of each screen is completed (S750). If the scaling is not completed, the screen is continuously scaled (S740a to S740c) as described above, and if scaling is completed, the user is most helpful to himself. At least one suitable screen is selected (S760).

If a screen is selected by the user, the controller controls the input and output switches so that only the selected screen is displayed (S770).

Subsequently, it is determined whether the channel is changed by a user key (S780), and whether or not the power is off (S790).

According to the control method of the analog / digital television device of the present invention, the user can select a screen that is most suitable for the user from among a plurality of displayed screens for each received signal type or scaled screen format, or for each received signal type and scaled screen format. Observe and choose for yourself.

According to the screen selectable image display apparatus and control method thereof of the present invention as described above, it is possible to select a most suitable screen among a plurality of screens so that the user can generate different types of signals such as analog and digital. It is possible to take into account the user's visual deviation, or the user's visual deviation caused by adjusting the screen of the displayed analog and digital received signals.

Claims (10)

A video display device capable of screen selection, A signal receiver for receiving digital and analog signals from the outside; A display unit displaying the digital and analog signals; A multi-window processing unit which processes the digital and analog signals to be displayed on a plurality of screens for a screen comparison of a user; A plurality of scalers for scaling digital or analog broadcast signals; And Control unit for controlling to display at least one screen selected by the user among a plurality of screens displayed by combining the analog signal, SD signal and HD signal Screen selectable image display device comprising a. The method of claim 1, The controller may include a screen format setting unit for controlling the scaler, an image quality determining unit for determining image quality of the received signal by receiving image quality information from the PSIP decoder, and controlling a tuner of the signal receiving unit to control the analog and A channel selection unit for tuning a channel of a digital signal, an OSD control unit for controlling a predetermined OSD to be displayed on the display unit, and the input and output such that only a screen selected by a user is displayed on the display unit. And a screen selector for controlling the switch. delete delete The method of claim 1, The user selects at least one or more of the screens of the plurality of scaled analog signals, selects at least one or more of the screens of the plurality of scaled SD signals, or at least any of the screens of the plurality of scaled HD signals. A screen selectable video display device characterized in that one or more are selected. The method of claim 1, The user is configured to select one of the screens by scaling the two screens in which any two signals of the analog signal, the SD signal, and the HD signal are combined, respectively, or the analog signal, the SD signal, and the HD signal And selecting one or two screens by scaling each of the three screens displayed in combination. In the control method of a video display device that can be screen selected, Receiving digital and analog signals from the outside; Displaying the digital and analog signals on a plurality of screens for screen comparison of a user; Selecting, by the user, at least one or more screens among a plurality of screens displayed by combining the analog signal, the SD signal, and the HD signal; And Displaying only the screen selected by the user Control method of the screen selectable image display device comprising a. The method of claim 7, wherein The screen selecting step may include selecting one of two screens in which any two signals of an analog signal, an SD signal, and an HD signal are displayed in combination, or the analog signal, the SD signal, and an HD signal are displayed in combination. And selecting one or two screens from three screens. The method of claim 7, wherein The selecting screen may include selecting at least one or more of the screens of the plurality of scaled analog signals, selecting at least one or more of the screens of the plurality of scaled SD signals, or screens of the plurality of scaled HD signals. And selecting at least one of the at least one control method. The method of claim 7, wherein The step of selecting a screen may include selecting one of the screens by scaling two screens in which any two signals of the analog signal, the SD signal, and the HD signal are combined, respectively, or selecting the screen of the analog signal, the SD signal, and the HD signal. And scaling each of the three displayed screens by combining the signals, and selecting one or two of them.

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