KR100662395B1 - Display device and method for switching channel thereof - Google Patents

Abstract

The present invention relates to a video device and a channel switching method thereof capable of continuously watching the present broadcast when local broadcasting is transmitted during terrestrial broadcasting. According to the present invention, a first tuner unit for tuning a desired main channel in a plurality of high frequency signals and a channel signal such as a channel signal inputted through the first tuner unit are checked in the first to nth external signals, and the result is checked. Accordingly, channel data of which the same data is input from among the first to nth external signals is tuned and stored in the memory unit. If the channel data stored in the first tuner unit and the memory do not match, the channel data stored in the memory unit is moved. A second tuner unit which transmits the broadcast of the stored channel data to the switching unit, and main channel data stored in the memory unit or main channel data stored in the memory unit through the first tuner unit from the first to nth external signals and transmitted to the image processor; A switching unit configured to perform the processing, an image processing unit processing an image of the main channel data, and the image processing unit And a scaling unit for scaling the data, and provides a video apparatus according to the configured including a display for displaying the scaled data characteristics. Therefore, according to the present invention, there is an effect that the present dispatch can be continuously watched during the present broadcast viewing.

Main broadcast, local broadcast

Description

Display device and method for switching channel

1 is a block diagram illustrating a video device according to the present invention;

2 is a flowchart for explaining a method for setting a main broadcast / local broadcast of a video device according to the present invention;

3 is a flowchart for explaining a channel switching method in an imaging apparatus according to the present invention.

* Explanation of symbols for main parts of drawings *

10, 20: tuner portion 30: switching portion

40: memory unit 50: image processing unit

51: caption decoder 52: color converter

53: video decoder 54: deinterlacer

60: scaler 70: display unit

The present invention relates to a video device and a channel switching method thereof, and more particularly, to a video device and a channel switching method thereof that can continue to watch the broadcast when local broadcasting is transmitted during terrestrial broadcasting.

Broadcasting is a mass media that targets an unspecified number, which is advantageous because it can be compressed like computer data compression because all elements (video, audio, data) are treated digitally.

After color TV broadcasting, stereo sound, remote control device, subtitle broadcasting, data broadcasting, etc. have adopted some digital technologies. In the 90's, computer and network technologies have been spreading more rapidly, so that the broadcasting field can realize high-definition and multifunctional TV. Digital TV was pursued as a video device.

In the case of digital TV (hereinafter, DTV), one program of HDTV level and three or more programs of SDTV level can be transmitted to one channel, and digital signal transmission and processing make it possible to enjoy a much cleaner screen. The ghost phenomenon can be solved on its own, and radio waves reflected by obstacles can be solved on their own.

Looking at the status of domestic broadcasting, after the pilot broadcast in 2000, the metropolitan area is performing the main broadcast in 2002, the metropolitan city is scheduled for 2004, and will complete the conversion of DTV broadcasting by 2010.

Recently, one TV is connected to a DVD player or a set-top box (STB) to watch true digital broadcasting.

In general, terrestrial broadcasting can be divided into main broadcasting and local broadcasting.

Here, most of the broadcasts are broadcasted to the whole country, and local broadcasts are broadcasted in specific regions only in specific time zones.

In other words, terrestrial broadcasting services local broadcasting stations in the role of broadcasting relay in each region, and transmits its own local broadcasting only at specific time.

Therefore, according to the conventional technology, when local local broadcasting is organized in a local broadcasting station, viewers cannot actually watch the broadcasting even if they want to watch the broadcasting, but have to separately watch a program retransmitted in a specific cable broadcasting channel. There was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and an object thereof is to provide a video device and a channel switching method thereof capable of continuously watching the broadcast even when local broadcasting is transmitted during terrestrial broadcasting.

In order to achieve the above object, the present invention provides a first tuner unit for tuning a desired main channel in a plurality of high frequency signals, and a channel signal such as a channel signal inputted through the first tuner unit in the first to nth external signals. Check and store channel data in which the same data among the first to n-th external signals are received and store in the memory unit. If the channel data stored in the first tuner unit and the memory do not match, the channel data is stored in the memory unit. A second tuner unit which moves to channel data and transmits the broadcast of the stored channel data to the switching unit, and selects main channel data or main channel data stored in the memory unit from the first to nth external signals through the first tuner unit; And a switching unit for transmitting to the image processing unit, and an image processing unit for processing the image of the main channel data And a scaling unit configured to scale the image processed channel data, and a display unit configured to display the scaled data.

Here, the memory unit is preferably composed of a nonvolatile memory.

The external signal is preferably at least one of cable broadcasting and satellite digital multimedia broadcasting (satellite DMB).

In order to achieve the above object, the present invention includes the steps of pre-selecting one broadcast to be received first of the main broadcast and the local broadcast during local broadcast transmission of the main broadcast and the local broadcast in the video device, When the local broadcast is transmitted while watching a broadcast, the present invention provides a channel switching method of a video apparatus comprising the step of displaying one of the main broadcast and the local broadcast according to the selection result.

Here, the step of pre-selecting one broadcast to be received first of the main broadcast and the local broadcast includes selecting a menu in the video apparatus, and transmitting the local broadcast when the local broadcast is transmitted during the main broadcast in the menu. And selecting one of the local broadcasts and storing the selection result.

The displaying of one of the main broadcast and the local broadcast may include: displaying a specific channel through a display unit by selecting a specific channel of the terrestrial wave, storing the channel information being displayed, and displaying an image of the selected channel. Determining whether the main broadcast and the local broadcast are set up when the local broadcast is detected on the current channel during watching; and when the main broadcast is set, the main broadcast channel from an external input signal of the video device. Searching and displaying the searched main broadcast channel image is preferable.

The external signal is preferably at least one of cable broadcasting and satellite digital multimedia broadcasting (satellite DMB).

Therefore, according to the present invention, even when local broadcasting is transmitted during terrestrial broadcasting, the present broadcasting can be continuously watched.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

1 is a block diagram illustrating a video device according to the present invention.

The imaging apparatus according to the present invention includes first and second tuner units 10 and 20, a switching unit 30, a memory unit 40, an image processing unit 50, a scaler unit 60, and a display unit 70. It is composed of

Here, the video device basically has data for each channel, and the first tuner 10 selects a desired main channel in a plurality of high frequency signals as a main tuner, for example. The second tuner unit 20 checks the same channel signal as the channel signal inputted through the first tuner unit 10 in the first to nth external signals, and according to the check result, the second tuner unit 20 equals one of the first to nth external signals. Channel data that is received is tuned and stored in the memory unit 40. If the first tuner unit 10 and the channel data do not match, the channel data stored in the memory unit 40 moves to the channel data stored in the memory unit 40. The broadcast is transmitted to the switching unit 30.

The switching unit 30 selects the main channel data or the main channel data stored in the memory unit 40 from the first to nth external signals through the first tuner unit 10 and transmits them to the image processor 50.

The memory unit 40 is configured of a nonvolatile memory and stores main channel data from the second tuner unit 10.

The image processor 50 includes a caption decoder 51, a color converter 52, an image decoder 53, and a deinterlacer 54 to process an image of main channel data (capture, color conversion (RGB, YUV). Video decoding, and progressive conversion).

The scaler 60 scales the processed channel data according to the resolution.

The display unit 70 displays scaled channel data.

The input signal to the switching unit 30 includes channel data tuned through the first tuner unit 10 and first to nth external signals. As an external signal, a DVD signal, a cable broadcast, a satellite digital multimedia broadcast, etc. (Satellite DMB).

In this case, since the satellite digital multimedia broadcasting receives an input of a video device as a component signal at the time of input, the video device switches the external input through the switching unit 30.

That is, in the present invention, the terrestrial wave (RF), cable, and component signals are all sensed through the second tuner unit 20, and the channel signal selected by the first tuner unit 10, which is the main tuner, is second. Detected by the tuner unit 20, when the local broadcast is transmitted from the main broadcast viewing channel is to receive the original main broadcast channel by switching to the satellite reception or cable.

2 is a flowchart for explaining a method for setting a main broadcast / local broadcast of a video device according to the present invention.

The present broadcasting / local broadcasting setting method of the video apparatus according to the present invention uses a menu function on the video apparatus, and first executes the menu function of the video apparatus (S10).

Next, the main broadcast / local broadcast channel switching menu is selected (S20).

Next, when broadcasting the local broadcast, it is selected which broadcast channel to watch in the main broadcast and the local broadcast (S30).
That is, one broadcast to be received first is selected in advance from the main broadcast and the local broadcast.

The selected item is stored (S40).

3 is a flowchart for explaining a channel switching method in an imaging apparatus according to the present invention.

In the channel switching method of the video device according to the present invention, a specific channel of the terrestrial wave is tuned in the video device capable of receiving a DVD signal, cable broadcasting, satellite digital multimedia broadcasting or terrestrial wave and displays the specific channel through the display unit (S100). ).

Then, the video device stores the tuned channel information (S110).

Subsequently, it is determined whether local broadcasting transmission is detected on the current channel while viewing the tuned channel image (S120).

Determination result (S120) If the local broadcast transmission is detected, it is determined whether the main broadcast viewing as shown in Figure 2 is set (S130).

As a result of determination (S130), if the broadcast viewing is not set, local broadcasting is output, and local broadcasting is displayed on the video device.

However, the determination result (S130), if watching the broadcast is set, the channel of the present invention is searched through the memory unit of the video device (S140).

Next, the stored channel is searched for, and the original main broadcasting channel is switched by satellite reception or a cable and outputted. Accordingly, the main broadcasting is displayed on the display unit of the video apparatus (S150).

In the above-described video apparatus of the present invention and the channel switching method thereof, the viewer can watch the desired main broadcast or select the local broadcast regardless of the local broadcast in a specific region through various paths regardless of the region.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (7)

A first tuner section for tuning a desired main channel in a plurality of high frequency signals; A channel signal, such as a channel signal coming through the first tuner unit, is checked in the first to nth external signals, and according to the result of the check, channel data in which the same data is input among the first to nth external signals is tuned and stored in the memory unit. A second tuner unit for moving to the channel data stored in the memory unit and transmitting a broadcast of the stored channel data to the switching unit if the first tuner unit and the channel data stored in the memory do not match; A switching unit which selects main channel data or main channel data stored in the memory unit from the first to nth external signals and transmits the main channel data to the image processor through the first tuner unit; An image processor which processes an image of the main channel data; A scaling unit to scale the image processed channel data; And a display unit for displaying the scaled data. The method of claim 1, And the memory unit comprises a nonvolatile memory. The method of claim 1, The external signal is at least one of cable broadcasting, satellite digital multimedia broadcasting (satellite DMB). Pre-selecting one broadcast to be preferentially received between the main broadcast and the local broadcast when the local broadcast is transmitted among the main broadcast and the local broadcast by the video device; And displaying one of the main broadcast and the local broadcast according to the selection result when the local broadcast is transmitted from the video apparatus according to the selection result. The method of claim 4, wherein In the step of pre-selecting one broadcast to be received first of the main broadcast and the local broadcast, Selecting a menu in the video apparatus; Selecting one of the main broadcast and the local broadcast when the local broadcast is transmitted while watching the main broadcast in the menu; And storing the selection result. The method of claim 4, wherein Displaying one of the main broadcast and local broadcast, Tuning a specific channel of the terrestrial wave to display a specific channel through the display unit; Storing the channel information being displayed; Judging whether the main broadcasting viewing is set among the main broadcasting and the local broadcasting when the local broadcasting transmission on the current channel is detected during the video viewing of the tuned channel; Searching for the main broadcasting channel from an external input signal of the video apparatus when the main broadcasting viewing is set; And displaying the found main broadcast channel image. The method of claim 6, And the external signal is at least one of cable broadcasting and satellite digital multimedia broadcasting (satellite DMB).

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