KR100641927B1 - Broadcast Channel Search Control Method of Digital Broadcast Receiver - Google Patents

Abstract

The present invention provides a broadcast channel search control method of a digital broadcast receiver, which enables a user to check a plurality of broadcast channel search histories for a digital television broadcast in the form of a plurality of search channel capture screens. To this end, the present invention captures still images according to video screens of a plurality of broadcast channels respectively designated by a user for searching for a broadcast channel, and a plurality of channel capture screens are generated in correspondence with a specified order of each broadcast channel number. Characterized in that the process consists of sequentially displayed on the display screen.

Broadcast Channel, Search, Still Image, Capture, Favorite Channel

Description

Broadcast channel search control method of digital broadcasting receiver {BROADCASTING CHANNEL SCAN CONTROL METHOD FOR DIGITAL BROADCASTING RECEIVER}             

1 is a diagram illustrating a display screen according to a broadcast channel search of a conventional general digital broadcast receiver;

2 is a diagram illustrating a system configuration of a digital broadcast receiver implemented with a broadcast channel discovery control method according to the present invention;

FIG. 3 is a diagram exemplarily illustrating a state in which a plurality of search channel capture screens sequentially showing a search history of a broadcast channel are sequentially displayed on a display screen according to an embodiment of the present invention; FIG.

FIG. 4 is a diagram illustrating a state in which channel screen capture data of each broadcast channel for which channel search is performed is stored in the video memory shown in FIG. 2;

FIG. 5 is a diagram schematically illustrating a state in which a viewing channel and a preference channel are set based on channel screen capture data stored in a video memory; FIG.

6 is a flowchart illustrating an operation of a broadcast channel search control method of a digital broadcast receiver according to the present invention.

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

10: tuner, 12: demux,

14: video buffer, 16: audio buffer,

18: data buffer, 20: video decoder,

22: audio decoder, 24: key input,

26: data memory, 28: video memory,

30: controller, 32: OSD signal generator,

34: image signal processing unit, 36: video synthesizing unit.

The present invention relates to a broadcast channel search control method of a digital broadcast receiver. More particularly, the present invention relates to a broadcast channel search control method of a digital broadcast receiver that enables a more efficient search for a plurality of broadcast channels that can be received by a digital broadcast receiver. will be.

As is well known, digital television broadcasting is roughly divided into North American digital television schemes such as Advanced Television System Committee (ATSC) and European digital television schemes such as Digital Video Broadcasting (DVB-T), which transmit broadcast signals. According to the method, it is divided into digital satellite broadcasting, digital cable broadcasting and digital terrestrial broadcasting.

In the digital television broadcasting, the ATSC method corresponding to the North American digital television method compresses a video signal to the MPEG-2 standard, compresses an audio signal to an AC-3 format, and transmits the compressed signal with high efficiency. 18 different signal formats allow multiple channels to be broadcasted at the same time.Because the broadcast channels are divided into major channels and minor channels, a single channel can be extended to dozens of minor channels as subchannels. It is.

As a result, it is now possible to efficiently search for a broadcasting channel, which has recently increased significantly for digital television broadcasting, in a digital broadcasting receiver such as a digital television (DTV), so as to accurately and quickly find a channel of taste that a user wants to watch. It becomes important.

That is, FIG. 1 illustrates a display screen according to a broadcast channel search of a conventional general digital broadcast receiver.

As shown in FIG. 1, the display screen of the digital broadcast receiver is a menu screen for searching for a broadcast channel of a user, and a broadcast channel display box 2 showing an overall broadcast channel number currently receivable is displayed in one screen area. In the broadcast channel included in the broadcast channel display box 2, for example, a major channel such as "7" and a minor channel of a specific major channel such as "8.1" are separately displayed.

While the broadcast channel display box 2 is displayed on the display screen, a single channel search screen window 4 is displayed in a specific screen area of the display screen, and the broadcast channel display box 2 is included in the broadcast channel display box 2. If a specific broadcast channel number is designated from among a plurality of broadcast channels by a user's key input operation, the channel search screen window 4 according to the specific broadcast channel specified by the user is separately set apart from the main broadcast channel screen of the corresponding display screen. The video screen is played.

The channel search screen window 4 is capable of changing and playing the video screen for each broadcast channel whenever the user designates each broadcast channel number included in the broadcast channel display box 2 for channel search.

However, in the conventional broadcast channel search method, only a video screen of a broadcast channel currently searched can be reproduced through a single channel search screen window formed on the display screen. Since it is not possible to show the program broadcast content, there is a problem that it is difficult to search a more efficient broadcast channel.

In addition, even if a plurality of channel search screen windows are formed on the display screen for more efficient channel search of the broadcast channel, a plurality of tuners are provided to display the playback state of each broadcast channel in which the search is performed in the plurality of screen windows. There is a disadvantage to be.

Accordingly, the present invention has been made in view of the above-described conventional situation, and an object thereof is to search for a broadcast channel of a digital broadcast receiver so that a plurality of broadcast channel search histories for a digital television broadcast can be confirmed in the form of a plurality of search channel capture screens. It is to provide a control method.

Another object of the present invention is to provide a broadcast channel search control method of a digital broadcast receiver, which enables selection of a channel to be currently watched using a plurality of search channel capture screens respectively displaying a plurality of broadcast channel search histories.

Another object of the present invention is to provide a broadcast channel search control method of a digital broadcast receiver that enables the designation of a viewing preference channel by using a plurality of search channel capture screens respectively displaying a plurality of broadcast channel search histories.

In order to achieve the above object, according to the present invention, a still image according to a video screen of a plurality of broadcast channels each designated by a user for searching for a broadcast channel, respectively, and captures the corresponding order of designating each broadcast channel number. The present invention provides a method for searching and controlling a broadcast channel of a digital broadcast receiver, wherein the channel capture screen is sequentially arranged and displayed on a display screen.

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

That is, FIG. 2 is a diagram illustrating a system configuration of a digital broadcast receiver in which a broadcast channel search control method according to the present invention is implemented.

As shown in FIG. 2, the digital broadcast receiver according to the method of the present invention includes a tuner 10, a demux 12, a video buffer 14, an audio buffer 16, a data buffer 18, a video decoder. 20, audio decoder 22, key input unit 24, data memory 26, video memory 28, control unit 30, OSD signal generation unit 32, image signal processing unit 34, and video It consists of the synthesis part 36.

The tuner 10 is for receiving a digital television broadcast signal by tuning a specific broadcast channel according to a channel tuning command from the controller 30, and the demux 12 is received through the tuner 10. For parsing MPEG transport streams of digital broadcast signals into video, audio and data signals.

The video buffer 14 buffers and temporarily stores the video signal parsed by the demux 12, and the audio buffer 16 buffers and temporarily stores the audio signal parsed by the demux 12. The data buffer 18 is for buffering and temporarily storing the data signal parsed by the demux 12.

The video decoder 20 decodes the video signal through the video buffer 14 and restores the original video signal to be reproduced and output. The audio decoder 22 outputs audio through the audio buffer 16. It is to decode the signal and restore it to the original audio signal capable of reproduction output.

The key input unit 24 includes a plurality of function keys for inputting execution commands for the overall functions of the corresponding digital broadcast receiver, and includes both a remote control for a wireless remote control, a wired keyboard, or a keypad installed in the digital broadcast receiver body. The key input for searching a plurality of broadcast channels according to the broadcast channel search function of the digital television broadcast signal, and the key input for searching for a specific broadcast channel among the searched broadcast channels on the main screen, and the search is performed. A function key for performing key input for setting a preferred channel among broadcast channels is provided.

The data memory 26 stores channel selection data for the overall broadcast channel of the digital television broadcast signal that can be tuned in the tuner 10, and stores setting information of a preferred channel selectively designated by the user.

The video memory 28 stores channel screen capture data of a video screen for each of a plurality of broadcast channels selected according to a user's sequential broadcast channel search operation, as shown in FIG. 4. Channel screen capture data 50 of each broadcast channel sequentially selected by the search operation and channel number data 52 of the corresponding broadcast channel are sequentially stored according to the channel selection order of the user. Subsequently, whenever channel screen capture data is added, it is searched first and deleted from the stored channel screen capture data.

The controller 30 executes a channel search mode according to a search command of a broadcast channel by a key input of the key input unit 24, and controls each broadcast channel sequentially selected to be tuned through the tuner 10, Capturing a video screen of a broadcast channel tuned for channel search from the video signal of the video decoder 20 and storing the video screen in the video memory 28 as channel screen capture data, and capturing channels in the search order of each broadcast channel. Controls the screen to be displayed sequentially on the display screen.

Here, as shown in FIG. 3, the control unit 30 displays a broadcast channel display box 40 showing an overall broadcast channel number currently receivable on the display screen in one screen area as the channel search mode is executed. And a channel number designation display unit 42 to indicate a state in which a specific broadcast channel number for searching is selected from among a plurality of broadcast channel numbers displayed on the corresponding broadcast channel display box 40 by a user's key input unit 24. Is displayed, and channel capture screens 44a to 44g composed of a plurality of still pictures corresponding to broadcast channels sequentially selected by a user in the broadcast channel display box 40 are search sequences for broadcast channels. To be arranged and displayed on the display screen.

In FIG. 3, in the case of the channel capture screen 44a corresponding to the broadcast channel number most recently selected by the user among the plurality of channel capture screens 44a to 44g, for example, the channel capture screen 44a is positioned in the upper left screen area of the display screen. In addition, it is preferable to display the capture screen designation display unit 46 generated by the OSD signal so that the broadcast channel of the corresponding capture screen is finally selected.

In addition, as a plurality of broadcast channels are selected on the broadcast channel display box 40 by the user, additional broadcasts by the user are displayed while a plurality of channel capture screens 44a to 44g corresponding to the selected broadcast channels are displayed. When the channel is selected, the capture screen 44g of the broadcast channel that has been selected as the top priority in the current channel capture screens 44a to 44g is deleted, and the screens of the broadcast channels are overwritten by the upper one screen. The capture screen of the broadcast channel is moved.

Meanwhile, as shown in FIG. 5, the control unit 30 is controlled by the user's key input unit 24 in a state where a plurality of channel capture screens for a plurality of broadcast channels for which channel search is performed are displayed on a display screen. When a specific channel capture screen is selected for playback of the main screen by a key input operation, the broadcast channel of the selected channel capture screen is tuned through the tuner 10 while the channel search mode is canceled and played back to the main screen through the display screen. Control as possible.

In addition, as shown in FIG. 5, the controller 30 may display a plurality of channel capture screens for a plurality of broadcast channels on which a channel search has been performed on the display screen. When a function for setting the entire preferred channel by the key input operation is executed, the data memory 26 is set by setting all the broadcast channel numbers for the entire channel screen capture data stored on the video memory 28 as the preferred channel. Save it to

In addition, as shown in FIG. 5, the controller 30 may display a plurality of channel capture screens for a plurality of broadcast channels on which a channel search has been performed on the display screen. When a function for setting some preferred channels is executed by a key input operation, a channel capture screen selectively selected from a plurality of channel capture screens 44a to 44g of the display screen by the user's key input unit 24 operation. The broadcast channel number of the channel screen capture data corresponding to is set as some preferred channel and stored in the data memory 26.

On the other hand, when the automatic channel check mode is designated by the user operation of the key input unit 24, the controller 30 outputs the screen for the predetermined time for the broadcast channels on which the channel capture screens are displayed, and then Control to switch to the channel is performed repeatedly.

In FIG. 1, the OSD signal generator 32 includes a broadcast channel display box 40 for displaying an overall broadcast channel on a display screen according to display control of the controller 30, and a capture screen designation display unit 46. An OSD signal is generated to indicate.

The image signal processing unit 34 performs image signal processing for reproducing the channel screen capture data from the video memory 28 through the control unit 30 into a plurality of channel capture screens 44a to 44g displayed in the form of still images. Perform

The video synthesizing unit 36 provides a video signal from the video decoder 20 and a still image signal for a plurality of channel capturing images from the image signal processing unit 34 and an OSD signal from the OSD signal generating unit 32. Synthesize and output on the display screen for playback.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 6.

First, in a state in which a digital television broadcast signal of a specific broadcast channel is being reproduced through the tuner 10 (step S10), the controller 30 determines whether the channel search mode is set by user operation of the key input unit 24. FIG. (Step S11).

As a result of the determination, when it is determined that the channel search mode is set by the user operation of the key input unit 24, the controller 30 controls the OSD signal generator 32 to store the data in the data memory 26. The broadcast channel display box 40 can be displayed on the display screen based on the overall broadcast channel number (step S120).

In this state, the controller 30 determines whether a specific broadcast channel is designated among the overall broadcast channel numbers included in the broadcast channel display box 40 on the display screen by a user manipulation of the key input unit 24. It judges (step S13).

As a result of the determination, if the control unit 30 determines that a specific broadcast channel is designated on the broadcast channel display box 40 by moving an input cursor by a user operation of the key input unit 24, the tuner 10 determines that the tuner 10 is designated. And storing a still picture of a specific screen in the video signal of the corresponding broadcast channel decoded by the video decoder 20 in the video memory 28 together with the number of the broadcast channel as channel screen capture data, Through the image signal processing through the image signal processing unit 34, a channel capture screen is displayed on the display screen (step S14).

Meanwhile, as the controller 30 repeatedly performs the processes of steps S13 and S14, a plurality of channel screen capture data corresponding to a plurality of broadcast channel numbers respectively designated according to a user's manipulation of the key input unit 24 is performed. Is stored in the video memory 28, and a plurality of channel capture screens are displayed on the display screen.

Next, according to the determination result of the step S13, if it is determined that the designation of the broadcast channel by the user operation of the key input unit 24 is not made, a plurality of displayed on the display screen A specific capture screen is selected from the channel capture screens to determine whether or not a setting for reproducing the corresponding broadcast channel on the main screen is made (step S15).

As a result of the determination, if it is determined that the viewing channel for reproducing a specific capture screen on the main screen is made among the plurality of channel capture screens on the display screen, the tuner 10 is set to the tuner 10. The broadcast channel is tuned to be reproduced on the main screen (step S16).

However, if it is determined that the control unit 30 is not configured to play a broadcast channel of a specific capture screen on the main screen by the key input unit 24, the user input of the corresponding key input unit 24 determines that It is determined whether or not the setting for setting the entire channel capture screen as the preferred channel is made (step S17).

As a result of the determination, when it is determined that the control unit 30 is configured to set the broadcasting channel of the entire channel capture screen as the preferred channel by the user's operation of the key input unit 24, the control unit 30 stores the video memory 28 in the video memory 28. The broadcast channel number of the overall channel screen capture data is set as the preferred channel and stored in the data memory 26 (step S18).

On the other hand, if it is determined that the control unit 30 has not performed an operation for setting the broadcasting channel of the overall channel capture screen as the preferred channel according to the determination result of step S17, the user input of the key input unit 24, A partial capture screen is selected from the channel capture screens, and it is determined whether or not a user operation for setting a broadcast channel as a preferred channel is performed (step S19).

As a result of the determination, when it is determined that the controller 30 partially selects a capture screen from the overall channel capture screen by user manipulation of the key input unit 24 and sets the corresponding broadcast channel number as a preferred channel, the key The broadcast channel number for the channel screen capture data of the video memory 28 corresponding to the partial capture screen selected by the user's operation of the input unit 24 is set as the partial preference channel and stored in the data memory 26. (Step S20).

Then, the control section 30 determines whether or not a function input for releasing the channel search mode is made by a user operation of the key input section 24 (step S21).

As a result of the determination, if it is determined that the user operation for releasing the channel search mode is performed by the key input unit 24, the controller 30 cancels the channel search mode and displays the broadcast channel display box and the channel capture screen on the display screen. The display state of is canceled and each channel screen capture data of the video memory 28 is erased (step S22).

On the other hand, the present invention is not limited to the above-described typical preferred embodiment, it can be carried out in various ways without departing from the gist of the present invention various modifications, changes, substitutions or additions in the art Anyone who has this can easily understand it. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

As described above, when the digital broadcasting receiver searches for a plurality of broadcast channels, a plurality of video screens of the broadcast channels to be searched are simultaneously displayed on the display screen as a capture screen in the form of a still picture, and captured. As the screen selection operation enables the playback setting to the main screen and the setting of the preferred channel, it is easy for a user to grasp the broadcast status of a broadcast program for a plurality of broadcast channels at a time, and the broadcast to be watched. Since the setting operation of the channel and the setting operation of the preferred channel can be made easier, the user can have convenience of use.

Claims (10)

A first step of displaying, on a display screen, a broadcast channel display box including an overall broadcast channel number on a display screen by setting a channel search mode for searching for a broadcast channel; A second step of capturing a still image of a video screen by selecting a broadcast channel number each time a broadcast channel number of the broadcast channel display box is selected, and displaying a channel capture screen of the still image on a display screen; And a third step of sequentially displaying and displaying a plurality of channel capture screens corresponding to the number of broadcast channels selected in the broadcast channel display box on a display screen. delete The method of claim 1, The method may further include sequentially storing channel screen capture data according to each channel capture screen in a memory together with the broadcast channel number whenever the broadcast channel number is selected in the broadcast channel display box. Broadcast channel search control method of a digital broadcast receiver. The method of claim 1, In the third step, when a channel capture screen corresponding to a plurality of broadcast channels is displayed on the display screen, when an additional broadcast channel is selected, the capture of the broadcast channel selected first is displayed while displaying a channel capture screen of the additional broadcast channel. And deleting the screen and moving the capturing screen of the broadcasting channel corresponding to the upper screen. The method of claim 1, The third step may further include displaying a broadcast channel of the channel capture screen as a main screen when a specific channel capture screen is designated while the channel capture screens corresponding to a plurality of broadcast channels are displayed on the display screen. Broadcast channel search control method of a digital broadcast receiver, characterized in that made. The method according to claim 1 or 3, In the third step, when a channel capture screen corresponding to a plurality of broadcast channels is displayed on the display screen, when a channel setting input is made, the broadcast channels of all channel capture screens displayed on the display screen are registered as a preference channel. Broadcast channel search control method of a digital broadcast receiver, characterized in that further comprises. The method according to claim 1 or 3, In the third step, when a channel capture screen corresponding to a plurality of broadcast channels is displayed on the display screen, when a preference channel setting input is made, registering a broadcast channel of a channel capture screen designated by a user as a preference channel is performed. Broadcast channel search control method of a digital broadcast receiver, characterized in that further comprises. In the method of showing a broadcast channel, A first step of displaying a list of received broadcasting channels; A second step of capturing a screen received from the channel and displaying the first small video when a broadcasting channel is selected on the list; When the other broadcast channel is selected on the list, a third step of capturing a screen received from the channel and displaying the screen as a second small picture adjacent to the first small picture is performed. Control method. The method of claim 8, In the third step, when the broadcast channel is continuously selected on the list, when the limited number of small video displays is exceeded, deleting the small video of the first selected broadcast channel and displaying the small video of the last selected channel at the position. Broadcast channel search control method of a digital broadcast receiver, characterized in that further comprises. The method of claim 8, The third step may further include outputting a predetermined time screen to broadcast channels on which small images are displayed and switching to the next channel when the automatic channel checking mode is designated. Broadcast channel search control method of a digital broadcast receiver.

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