KR20040045507A - Digital TV and method for switching input mode of the same - Google Patents

Abstract

PURPOSE: A digital TV and a method of changing an input mode of the digital TV are provided to conveniently convert the input mode for various input signals. CONSTITUTION: A digital TV includes a remote controller(100), a signal receiver(200), a controller(300), a signal input unit(400), a signal processor(500), and a display(600). The remote controller outputs a corresponding key signal in response to the first or second mode selected by a user. The signal receiver receives the key signal selected through the remote controller. The controller displays an OSD(On Screen Display) picture when the key signal corresponding to the second mode is input. When a numeral key on the remote controller is pushed within a predetermined time while the OSD picture is displayed, the controller converts the mode of the digital TV to a corresponding mode. The signal input unit receives a signal of the mode converted by the controller. The signal processor processes the signal received through the signal input unit. The display displays the signal processed by the signal processor.

Description

Digital TV and method for switching input mode of the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital TVs, and more particularly, to a digital TV and an input mode switching method thereof, which makes switching processing more convenient for various input signals.

In general, the digital TV (TV) reproduces much clearer picture quality and sound quality because all signals transmitted from the broadcasting station to the home as well as the signal processing in the TV receiver are digital.

In recent years, the provision of the interface of various external devices (VCR, DVD, STB, PC, etc.) in addition to the broadcast signal has become a basic feature in TVs. In particular, in the case of high-definition digital TVs and discrete TVs, multimedia functions are gradually being enhanced. .

In addition, for the convenience of users, a remote controller (hereinafter, referred to as a remote controller) is used to remotely control electronic products without directly operating a key panel installed in the main body of an electronic product. Nearly all are equipped with a remote control for remote control for the convenience of the user.

The function of the remote controller is not only a TV on / off function, but also a function such as channel switching and volume control, and is used as a means for switching to various connected external device input modes.

Hereinafter, a configuration of a digital TV according to the related art and an input mode switching method thereof will be described with reference to the accompanying drawings.

1 is a block diagram showing a schematic configuration of a digital TV according to the prior art, Figure 2 is a view showing the configuration of the remote control shown in Figure 1, Figure 3 shows an input mode switching method of the digital TV according to the prior art. Timing diagram.

As shown in FIG. 1, the digital TV according to the prior art includes a remote controller 10 for inputting a user's request command (channel switching, volume control, and input mode switching), and a signal output through the remote controller 10. A signal receiving unit 20 for receiving a signal, a microcomputer 30 for outputting a control signal according to a user request command input through the signal receiving unit 20, and a broadcast signal and an external signal according to the control signal of the microcomputer 30; A signal input unit 40 for receiving a video signal input from a device, a signal processor 50 for processing a video signal input through the signal input unit 40 to be displayed on the display unit 60, and the signal The display unit 60 is configured to display a broadcast signal processed by the processor 50.

Here, the remote controller 10 is configured to switch the input by the TV / external input and the multimedia key input, as shown in FIG.

That is, as shown in FIG. 3, the user switches modes in the order of AV1 → AV2 → AV3 → AV4 → First component → Second component → RGB → DVI → ATSC. Consists of.

In addition, when the user inputs the multimedia key, the mode switching is performed in the order of the first component → second component → RGB → DVI → first component.

The digital TV according to the related art configured as described above may be switched to a desired mode through a repeated input of a TV / external input key or a multimedia key on the remote controller 10 when the user wants to switch modes through the input of the remote controller 10. Could.

That is, according to the switching signal output through the remote controller 10, the microcomputer 30 recognizes this and outputs a control signal to receive a signal input from the corresponding external device (not shown), the signal input unit 20 The controller receives an image signal from a corresponding external device (not shown) selected by the user and transmits the image signal to the signal processor 50 to be displayed on the display unit 60.

As described above, the conventional TV and its input mode switching method have the following problems.

First, the time required for mode switching is long because the switching to the desired mode is performed according to the repetitive input of any one of the TV / external input key or the multimedia key preset on the remote controller.

Second, since the number of key inputs is large, it causes inconvenience to the user.

Third, as the inconvenience to the user is caused, the reliability of the product is lowered.

The present invention has been made to solve this problem, the digital TV and its input mode to switch the input mode by the numeric key input corresponding to each external input in the standby state for a predetermined time after the AV key input of the TV The purpose is to provide a switching method.

1 is a block diagram showing the configuration of a digital TV according to the prior art

2 is a front view showing the configuration of the remote controller shown in FIG.

3 is a timing diagram illustrating an input mode switching method of a digital TV according to the related art.

4 is a block diagram showing the configuration of a digital TV according to the present invention.

5 is a flowchart illustrating an input mode switching method of a digital TV according to the present invention.

6 is a front view showing the configuration of the remote controller shown in FIG.

7 (a) and 7 (b) are flowcharts illustrating an input mode switching process according to key input

Explanation of symbols for main parts of the drawings

100: remote control 101: first mode selection key

102: second mode selection key 103: numeric keys

200: signal receiver 300: microcomputer

301: timer 400: signal input unit

500: signal processing unit 600: display unit

The digital TV according to the present invention for achieving the above object includes a remote control for outputting a corresponding key signal according to the first or second mode selected by the user, a signal receiving unit for receiving the key signal selected through the remote control; And determining whether a key signal corresponding to a first or second mode is input through the signal receiver, and when a key signal corresponding to the second mode is input, controls to display a corresponding OSD screen. The OSD is being displayed. A control unit for controlling switching to a corresponding mode when a numeric key assigned to the remote controller is input within a preset time in a state; a signal input unit for receiving a signal of a mode switched according to a control signal of the controller; Signal that processes the signal input through the signal input unit to be displayed on the screen It consists including Li portion has its features.

Preferably, the remote controller has a first mode selection key (TV selection key) for switching to one of digital video signal (ATSC) and analog video signal (NTSC), and a second mode for switching to AV or multimedia mode. It comprises a selection key (AV / multimedia key) and a numeric key which assigns a different multimedia mode to each different key.

Preferably, the controller further comprises a timer for detecting whether a predetermined set time has elapsed when the second mode is selected through the remote controller.

In order to achieve the above object, the input mode switching method of a digital TV according to the present invention is a remote control digital TV input mode switching method including a first mode selection key and a numeric key, wherein a user selects a first mode selection key. If selected, switching to an analog broadcast mode or a digital broadcast mode according to the number of times of the first mode selection key input; displaying an OSD for mode switching when the user inputs a second mode selection key; and displaying the OSD And determining whether the preset time has elapsed, and switching to a corresponding mode according to whether the preset time has elapsed and the numeric key input.

Preferably, the step of switching to a corresponding mode according to whether the preset time has elapsed and the numeric key input is performed. If the numeric key is input without the preset time being elapsed while the OSD is displayed, Switching to the assigned mode, and automatically switching to an external input in a preset order after the preset time has elapsed.

Hereinafter, a digital TV and an input mode switching method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a block diagram showing the configuration of a digital TV according to the present invention, Figure 5 is a flowchart showing a method of switching the input mode of the digital TV according to the present invention, Figure 6 is a view showing the configuration of a remote control according to the present invention to be.

As shown in FIG. 4, the digital TV according to the present invention includes a remote controller 100 for outputting a corresponding key signal according to a first or second mode selected by a user, and a key signal selected through the remote controller 100. Determining whether a key signal corresponding to the first or second mode is input through the signal receiving unit 200 and the signal receiving unit 200 for receiving the signal, and if the key signal corresponding to the second mode is inputted, A control unit 300 for controlling the OSD screen to be displayed and for switching to a corresponding mode when a predetermined number key is input on the remote controller 100 within a preset time while the OSD is being displayed; Signal input unit 400 for receiving a signal of the mode switched according to the control signal of the control unit 300, and a signal input through the signal input unit 400 is displayed on the screen And a display unit 600 for displaying an image signal processed by the signal processor 500, and a signal processor 500 for processing the signal.

As illustrated in FIG. 6, the remote controller 100 includes a first mode selection key 101 for selecting an analog broadcast signal or a digital broadcast signal, and a second mode selection key for selecting an AV or multimedia mode. 102 and numeric keys 103 for directly selecting a desired mode after inputting the second mode selection key 102.

Referring to the operation of the input mode switching device of the digital TV according to the present invention configured as described above, if the user inputs a signal through the first mode selection key 101 to select the TV mode on the remote control 100, The TV modes ATSC and NTSC may be alternately selected according to the number of times of input of the first mode selection key 101.

On the other hand, when the user inputs the second mode selection key 102 for selecting the AV / multiplayer mode on the remote controller 100, an OSD for AV or multimedia mode selection is displayed on the screen and is ready to receive the next key. Enter the state.

At this time, the standby state is switched to the corresponding mode assigned to the numeric key 103 when any one of the numeric keys 103 is input for a predetermined time, and in the set order if the numeric key is not input in the standby state. Therefore, it automatically switches to the next external input mode.

Then, the signal input unit 400 receives the control signal of the microcomputer 300 according to the mode switching signal input from the remote control 100, a signal input through a broadcast signal or an external device corresponding to the switched mode The signal processing unit 500 processes the signal input through the signal input unit 400 to be displayed on the display unit 600 and outputs the signal to the display unit 600.

Referring to FIG. 5 for the input mode switching method of the digital TV according to the present invention configured as described above, it is first determined whether a TV key is selected (S11).

Subsequently, when the user selects the TV key, the determination result (S11) outputs an ATSC or NTSC broadcast signal according to the TV key input frequency input by the user (S12).

If the user selects the power-off, the process ends or the process returns to the step S11 (S13).

On the other hand, if the determination result (S11), if the TV key is not selected, it is determined whether the AV key is selected (S14).

Subsequently, if the AV key is selected, the determination result (S14) displays an OSD for AV selection (S15).

Then, it is determined whether the preset time has elapsed (S16).

As a result of the determination (S16), if the preset time has elapsed, the mode is automatically switched to the next mode (S17).

On the other hand, if the predetermined result has not elapsed (S16), it is determined whether a pre-assigned numeric key is input (S18).

As a result of the determination (S18), if a pre-assigned numeric key is input, the mode is switched to the mode corresponding to the input numeric key (S19).

As described above, in the input mode switching method of the digital TV according to the present invention, when the user selects a TV key, as shown in FIG. 6, the NTSC broadcast and the ATSC broadcast may be sequentially selected according to the TV key input frequency. In addition, when the user selects the AV / multimedia key, as shown in FIG. 7, the "AV_" OSD is displayed, and enters the standby state for receiving the next key, and then enters each external device before the preset time elapses. If a numeric key is already assigned to correspond to it, it automatically switches to the corresponding external input. If there is no numeric key input during the preset time, it automatically switches to the next input.

As described above, the digital TV and its input mode switching method according to the present invention have the following effects.

First, in selecting a TV or an AV / multimedia mode, the user can select a desired mode more quickly by inputting keys so as to be distinguished from each other.

Second, if the user wants to select the desired multimedia input or AV input after the mode selection, the user can be directly switched by directly inputting a pre-assigned numeric key, thereby providing more convenience to the user.

Third, the reliability of the product is increased because the input can be switched more conveniently and quickly in the TV environment where the multimedia input is gradually diversified.

Claims (5)

A remote controller for outputting a corresponding key signal according to a first or second mode selected by a user; A signal receiver for receiving a key signal selected through the remote controller; It is determined whether a key signal corresponding to the first or second mode is input through the signal receiving unit, and when the key signal corresponding to the second mode is input, the corresponding OSD screen is displayed and the OSD is being displayed. A control unit for controlling switching to a corresponding mode when a pre-allocated number key is input to the remote controller within a preset time; A signal input unit for receiving a signal of a mode switched according to the control signal of the controller; And, And a signal processing unit for processing a signal input through the signal input unit to be displayed on a screen. The method of claim 1, The remote control A first mode selection key for switching to either TV mode of digital video signal (ATSC) or analog video signal (NTSC); A second mode selection key for switching to AV or multimedia mode, A digital TV comprising a numeric key assigned to different multimedia modes for each different key. The method of claim 1, The control unit is configured to include a timer for detecting whether a predetermined set time has elapsed when the second mode is selected through the remote control. In the input mode switching method of the remote control digital TV having the first and second mode selection keys and the numeric keys, Switching to an analog broadcast mode or a digital broadcast mode according to the number of times of the first mode selection key input when the user selects the first mode select key; Displaying an OSD for mode switching when a user inputs a second mode selection key; Determining whether a preset time has elapsed when the OSD is displayed; And, And switching to a corresponding mode according to whether the preset time has elapsed and the numeric key is input. The method of claim 4, wherein The step of switching to the corresponding mode according to whether the preset time has elapsed and the numeric key input is Switching to a mode pre-assigned to the input numeric key if the numeric key is input without a preset time elapsed while the OSD is displayed; And automatically switching to external input in a preset order when the preset time has elapsed.