KR100814429B1 - Display apparatus and channel change thereof - Google Patents

Abstract

A display device and a channel switching method thereof are disclosed. The display apparatus includes a broadcast signal receiver for tuning and receiving a predetermined channel under one of an analog mode for receiving an analog signal and a digital mode for receiving a digital signal, a key input unit for receiving a mode selection key signal, and an analog mode. When the first selection key signal for selecting the digital mode is input in the operating state, the digital signal is switched to the digital mode to tune to the preset first channel under the digital mode, and the first selection key signal is reset when the first channel is tuned. And a control unit for controlling the broadcast signal receiver to tune to a next channel of the first channel when input. Accordingly, the user can switch the broadcast mode and the channel using one key.

Display device, broadcast mode switching, channel switching

Description

Display apparatus and channel switching method

1 is a block diagram showing a configuration of a display apparatus according to an embodiment of the present invention;

2 is a block diagram showing a configuration of a display apparatus according to another embodiment of the present invention;

3 is a flowchart illustrating a broadcast mode switching and channel switching method according to an embodiment of the present invention.

Description of the main parts of the drawing

100: display device 110: broadcast signal receiving unit

120: control unit 130: key input unit

The present invention relates to a display apparatus and a channel switching method thereof, and more particularly, to a display apparatus and a channel switching method capable of performing broadcast mode switching and channel switching using one key.

The development of digital technology has allowed the broadcasting station to transmit the broadcasting method as the initial analog broadcasting signal according to the digital method, and the transmission of the digital broadcasting signal using satellite has already been commercialized. However, until the digital broadcasting technology is fully systemized and the digital display device is popularized, the analog and digital methods must be mixed for a certain time. In addition, a display device capable of receiving both an analog broadcast signal and a digital broadcast signal is required. Accordingly, an integrated digital display device including a tuner capable of receiving both an analog broadcast signal and a digital broadcast signal has been developed.

In the conventional display device, when a user watches an analog broadcast and wants to watch a digital broadcast, or watches a digital broadcast and wants to watch an analog broadcast, the user presses an analog or digital switch key provided on the remote control to switch to digital broadcast. Could switch. In addition, in order to select a channel, a user presses a channel number of a desired broadcast or switches channels using an up-down key. The broadcast mode switching and channel switching methods have a problem in that user convenience is inferior because multiple keys must be used.

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 display apparatus and a channel switching method capable of increasing user convenience by enabling broadcasting mode switching and channel switching with one key. Is in.

The display device according to the embodiment of the present invention having the above object has a broadcast signal receiver for receiving a channel by selecting a channel under one of an analog mode for receiving an analog signal and a digital mode for receiving a digital signal. A key input unit for receiving a selection key signal and a first selection key signal for selecting a digital mode while the broadcast signal receiver is operating in an analog mode, and then switching to the digital mode to set a first preset mode under the digital mode; And a controller that controls the broadcast signal receiver to tune to a channel next to the first channel when the channel is selected and the first selection key signal is re-input in the state where the first channel is tuned.

The controller may be configured to switch to the analog mode and select a preset second channel under the analog mode when the second selection key signal for selecting the analog mode is input while the broadcast signal receiver operates in the digital mode. When the second selection key signal is input again while the second channel is tuned, it is preferable to control the broadcast signal receiver to tune to the next channel of the second channel.

The controller may further include a memory unit in which the broadcast channel information under the analog mode and the broadcast channel information under the digital mode are stored. The control unit may include the lowest broadcast channel and the highest broadcast channel among the broadcast channel information under the switched mode when the mode is changed. It is desirable to tune in one.

A digital signal processor for processing a digital broadcast signal received by the broadcast signal receiver; an analog signal processor for processing an analog broadcast signal received by the broadcast signal receiver; a process outputted from one of the digital signal processor and the analog signal processor; The display unit may further include an output unit for outputting a signal, and an OSD generator configured to generate a predetermined warning message and provide the output unit to the output unit under control of the controller when the broadcasting channel information is not stored in the memory unit.

The channel switching method according to another embodiment of the present invention having the above object, (a) receiving a broadcast signal through a predetermined channel under one of the analog mode and the digital mode, (b) present When the first selection key signal for selecting the digital mode is input while the mode is the analog mode, the controller switches to the digital mode to tune a preset first channel under the digital mode, and tunes the first channel. Tuning to the next channel of the first channel when the first selection key signal is input again, and (c) a second selection key signal for selecting the analog mode when the current mode is the digital mode; When inputted, the apparatus switches to the analog mode to tune a preset second channel under the analog mode, and tunes the second channel. And if the second selection key signal is input again in the state it includes the step of tuning to the next channel of the second channel.

In the step (b) and the step (c), when the mode change is performed, it is preferable to tune to one of the lowest broadcast channel and the highest broadcast channel among previously stored broadcast channel information under the switched mode.

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

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present invention. According to FIG. 1, the display apparatus 100 includes a broadcast signal receiver 110, a controller 120, and a key inputter 130.

The broadcast signal receiving unit 110 tunes and receives a predetermined channel under one of an analog mode for receiving an analog signal and a digital mode for receiving a digital signal.

The key input unit 130 receives a mode selection key signal. In detail, the key input unit 130 receives a first selection key signal for selecting a digital mode and a second selection key signal for selecting an analog mode. In this case, the first selection key signal may be input when the user presses a DTV key provided on the remote controller or an external operation key (hereinafter, referred to as a remote controller), and the second selection key signal may be input when the ATV key is pressed.

If the first selection key signal for selecting the digital mode is input through the key input unit 130 while the broadcast signal receiving unit 110 operates in the analog mode, the controller 120 switches to the digital mode and presets the digital mode. The broadcast signal receiver 110 is controlled to tune to the first channel. In addition, the controller 120 controls the broadcast signal receiver 110 to tune to the next channel of the first channel when the first selection key signal is input again while the broadcast signal receiver 110 tunes to the first channel. .

Meanwhile, when the second selection key signal is input through the key input unit 130 while the broadcast signal receiving unit 110 operates in the digital mode, the control unit 120 switches to the analog mode and preset second channel under the analog mode. The broadcast signal receiving unit 110 is controlled to tune. In addition, the controller 120 controls the broadcast signal receiver 110 to tune to the next channel of the second channel when the second selection key signal is input again while the broadcast signal receiver 110 tunes to the second channel. . Through this, broadcasting mode switching and channel switching can be performed using one key signal.

2 is a block diagram showing a configuration of a display apparatus according to another embodiment of the present invention. According to FIG. 2, the display apparatus includes a broadcast signal receiver 210, a controller 220, a key inputter 230, a memory 240, a digital signal processor 250, an analog signal processor 260, and an OSD generator ( 270 and an output unit 280.

The broadcast signal receiving unit 210 tunes and receives a predetermined channel under one of an analog mode for receiving an analog signal and a digital mode for receiving a digital signal.

When the digital signal is received through the broadcast signal receiver 210, the digital signal processor 250 performs signal processing accordingly. In detail, the digital signal processor 250 decodes the digital signal and scales the decoded digital signal into an image that fits the screen size.

When the analog signal processor 260 receives an analog signal through the broadcast signal receiver 210, the analog signal processor 260 processes the signal accordingly. In detail, the analog signal processor 260 decodes the analog signal into a digital signal and scales the decoded digital signal into an image suitable for a screen size.

The key input unit 230 receives a mode selection key signal. In detail, the key input unit 230 receives a first selection key signal for selecting a digital mode and a second selection key signal for selecting an analog mode. In this case, the first selection key signal may be input when the user presses a DTV key provided on the remote controller or an external operation key (hereinafter, referred to as a remote controller), and the second selection key signal may be input when the ATV key is pressed.

The OSD generator 270 generates a broadcast channel information setting window and an OSD message. Specifically, the broadcast channel information setting window means that channel information such as a storage channel and a channel switching direction can be set. Here, the storage channel is a channel set by the user, and the user can set the storage channel according to the frequency of use and necessity. In addition, the channel switching direction refers to a channel switching direction such as upper channel switching and lower channel switching based on the current channel during channel switching. In addition, broadcast channel information may be set for each of analog shelving and digital broadcasting. On the other hand, the OSD generator 270 generates an OSD message to provide information to the user.

The memory unit 240 stores broadcast channel information set through the broadcast channel information setting window of the OSD generator 270.

The output unit 280 outputs the broadcast image and the OSD message on the screen.

The controller 220 controls the overall operation of the display device. In detail, when the first selection key signal is input through the key input unit 230 while the broadcast signal receiver 210 operates in the analog mode, the controller 220 switches the current broadcast mode to the digital mode. Control 210. In this case, the controller 220 controls the broadcast signal receiver 210 to tune to the preset first channel under the digital mode when the digital mode is switched. In addition, the first channel tuned when the digital mode is switched may be the lowest broadcast channel or the highest broadcast channel among digital broadcast channel information stored in the memory unit 240.

In addition, when the first selection key signal is re-input through the key input unit 230 while the first channel is tuned in the digital mode, the control unit 220 tunes to the next channel of the first channel. To control. In this case, an upper channel of the first channel or a lower channel of the first channel may be tuned to the next channel of the first channel according to the channel switching direction set in the broadcast channel information stored in the memory unit 240.

Meanwhile, when the second selection key signal is input through the key input unit 230 while the broadcast signal receiver 210 operates in the digital mode, the controller 220 switches the current broadcast mode to the analog mode. 210 is controlled. In this case, the controller 220 controls the broadcast signal receiver 210 to tune to the second channel preset under the analog mode when the analog mode is switched. In addition, the second channel tuned when the analog mode is switched may be the lowest broadcast channel or the highest broadcast channel among analog broadcast channel information stored in the memory unit 240.

In addition, when the second selection key signal is re-input through the key input unit 230 while the second channel is tuned in the analog mode, the controller 220 tunes to the next channel of the second channel. To control. In this case, an upper channel of the second channel or a lower channel of the second channel may be tuned to the next channel of the second channel according to the channel switching direction of the broadcast channel information stored in the memory unit 240.

Meanwhile, when a selection key signal for selecting another mode is input, the controller 220 displays an OSD message for requesting channel confirmation or an OSD message indicating that there is no storage channel when there is no storage channel under the other mode. The OSD generation unit 240 and the output unit 280 is controlled to output.

3 is a flowchart illustrating a broadcast mode switching and channel switching method according to an embodiment of the present invention. According to FIG. 3, the display apparatus receives broadcast channel selection and a broadcast signal (S310). In detail, when the power is turned on, the display apparatus may receive a broadcast signal by selecting a broadcast channel which has been finally performed, or receive a broadcast signal by selecting a broadcast channel selected by a user. In addition, the broadcast signal may be a broadcast signal received under one of an analog mode and a digital mode.

Thereafter, the display apparatus checks whether the input key signal is the first selection key signal for selecting the digital mode (S315). In this case, the first selection key signal for selecting the digital mode may be input when the user presses the DTV key provided in the remote controller.

As a result of the check in step S315, when the first selection key signal is input, it is checked whether the mode of the current display apparatus is the digital mode for receiving the digital signal (S325). As a result of the check, when the analog mode for receiving an analog signal instead of the digital mode, the current mode is switched to the digital mode (S330). Thereafter, the display device selects a preset channel under the digital mode (S340). In this case, if there is no preset channel, the lowest broadcast channel or the highest broadcast channel among the storage channels of the stored broadcast channel information may be tuned. For example, if there are 6-1, 7-1, 9-1, 11-1, 13-1, 20-1, 22-1, and 27-1 in the storage channel, the 6-1 channel, which is the lowest broadcast, is present. Alternatively, the 27-1 channel, which is the highest broadcast, may be tuned. In addition, when there is no storage channel, it indicates that there is no current storage channel and outputs an OSD message requesting channel confirmation on the screen. Through this, the user can check the channel and prepare a corresponding solution.

On the other hand, as a result of checking in step S325, when the mode of the display device is the digital mode, the next broadcast channel is tuned to the channel selected under the current digital mode (S335). In this case, the next broadcast channel to be tuned may be an upper channel or a lower channel of the current channel. For example, if the currently selected channel is 11-1 channel, the 13-1 channel, which is the upper channel thereof, may be tuned, and when the user presses the first selection key signal once more, the 20-1 channel may be tuned. According to another embodiment, when the current channel is 11-1 channel, the channel 9-1 below it may be tuned. In this state, when the user presses the first selection key signal again, 7-1 channel may be selected. As described above, whenever the first selection key signal is input while the mode of the display apparatus is operating in the digital mode, the channel can be switched to the upper channel or the lower channel.

On the other hand, if it is determined in step S315 that the input key signal is not the first selection key signal, it is checked whether the second selection key signal for selecting the analog mode (S320). In this case, the second selection key signal for selecting the analog mode may be input when the user presses an ATV key provided in the remote controller. Thereafter, when it is determined that the second selection key signal is input, the display apparatus checks whether the current display apparatus mode is an analog mode for receiving an analog signal (S345). As a result of the check, in the digital mode other than the analog mode, the display device switches to the analog mode (S350). Thereafter, the display apparatus selects a preset broadcast channel in the analog mode (S360). In this case, if there is no preset channel, the lowest broadcast channel or the highest broadcast channel among the storage channels of the stored broadcast channel information may be tuned. For example, when there are 6, 7, 9, 11, 13, 20, 22, and 27 storage channels, 6 channels, which are the lowest broadcasts or 27 channels, which are the highest broadcasts, may be selected. On the other hand, if there is no storage channel, it indicates that there is no current storage channel, and outputs an OSD message requesting channel confirmation on the screen.

On the other hand, as a result of checking in step S345, when the mode of the display device is the analog mode, the next broadcast channel is tuned to the channel selected under the current analog mode (S355). In this case, the next broadcast channel to be tuned may be an upper channel or a lower channel of the current channel. For example, if the current channel is 11 channels, 13 or 9 channels, which are upper channels, may be selected. In this case, whenever the second selection key signal is input while the mode of the display device operates in the analog mode, the channel can be switched to the upper channel or the lower channel. Through this, the user can perform the broadcast mode switching and the channel switching using one key.

Next, if the broadcast mode switching and channel switching operations are not finished (S365), the channel mode switching and channel switching operations are performed again.

As described above, according to the present invention, when switching from analog broadcasting to digital broadcasting or digital broadcasting to analog broadcasting, or switching channels in the same broadcasting, a plurality of keys are used by using the same key corresponding to each broadcasting. It does not need to be provided. In addition, user convenience may be increased by not having to operate a plurality of keys in broadcasting mode switching and channel switching.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (6)

A broadcast signal receiving unit which tunes and receives a predetermined channel in one of an analog mode for receiving an analog signal and a digital mode for receiving a digital signal; A memory unit which stores broadcast channel information in the analog mode and broadcast channel information in the digital mode; A key input unit configured to receive a mode selection key signal; And, When a first selection key for selecting a digital mode is input while the broadcast signal receiver is operating in an analog mode, the digital signal is switched to the digital mode to tune to a preset first channel under the digital mode, and to tune the first channel. When the first selection key is re-input in one state, the broadcast signal receiving unit is controlled to tune to a next channel of the first channel using broadcast channel information stored in the memory unit. When a second selection key for selecting an analog mode is input while the broadcast signal receiver operates in a digital mode, the broadcast signal receiver switches to the analog mode, selects a preset second channel under the analog mode, and tunes the second channel. And a controller configured to control the broadcast signal receiver to tune to a next channel of the second channel by using the broadcast channel information stored in the memory unit when the second selection key is re-input. . delete The method of claim 1, And the control unit selects one of the lowest broadcast channel and the highest broadcast channel among the broadcast channel information under the switched mode when the mode change is performed. The method of claim 3, A digital signal processor which processes the digital broadcast signal received by the broadcast signal receiver; An analog signal processor configured to process an analog broadcast signal received by the broadcast signal receiver; An output unit for outputting a processing signal output from one of the digital signal processing unit and the analog signal processing unit; And, And an OSD generator for generating a predetermined warning message to the output unit when the broadcast channel information is not stored in the memory unit under the control of the controller. In the channel switching method of the display device operating in one of the analog mode for receiving an analog signal and the digital mode for receiving a digital signal, (a) receiving a broadcast signal through a predetermined channel under one of the analog mode and the digital mode; (b) when a first selection key for selecting the digital mode is input while the current mode is the analog mode, the controller switches to the digital mode to select a preset first channel under the digital mode, and selects the first channel. Checking the pre-stored digital broadcasting channel information when the first selection key is re-input in the tuned state, and tuning the next channel of the first channel; And, (c) when the second selection key for selecting the analog mode is input while the current mode is the digital mode, the controller switches to the analog mode and selects a preset second channel under the analog mode, and the second channel is selected. Checking the pre-stored analog broadcast channel information and selecting the next channel of the second channel when the second selection key is re-input in the tuned state. The method of claim 5, Step (b) and step (c), And when one of the lowest broadcast channel and the highest broadcast channel is selected from among pre-stored broadcast channel information when the mode switch is performed.

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