KR20070028893A - Digital broadcasting receiver and channel searching method - Google Patents

Abstract

A digital broadcasting receiver and a channel searching method thereof are provided to assign a button for searching only digital broadcasting channels to an input unit such as a remote controller and tune only the digital broadcasting channels to display them whenever the button is pressed. A digital broadcasting channel list comprised of only digital broadcasting channels is created and stored. Whenever a digital broadcasting channel selection button of an input unit is pressed, a channel of a corresponding order among channels registered in the digital broadcasting channel list is tuned and displayed. The digital broadcasting channel list is updated whenever one of the digital broadcasting channels is changed. The digital broadcasting channel selection button is used to search the channels of the digital broadcasting channel list in preliminarily set order.

Description

Digital broadcasting receiver and channel searching method

1 is a block diagram showing an embodiment of a digital broadcast receiver for channel discovery according to the present invention;

2A to 2C illustrate examples of a digital broadcast channel selection button allocated to the remote controller of FIG. 1.

3 is a flowchart illustrating an embodiment of a digital broadcast channel selection method according to the present invention.

Explanation of symbols for main parts of the drawings

100 control unit 111 tuner

112: demodulation section 113: decoding section

114: display processing unit 115: memory

116: OSD processing unit 117: remote control

The present invention relates to a digital broadcast receiver, and more particularly, to an apparatus and a method for searching for a digital broadcast channel only.

In general, broadcast is divided into analog broadcast and digital broadcast. The digital broadcast means that the program is digitally processed and then transmitted through a digital transmission method, and the analog broadcast means that the program is analogally processed and then transmitted through an analog transmission method. For example, an image of digital broadcasting is compressed and encoded by the MPEG algorithm and then transmitted by 8-VSB, and an image of analog broadcasting is transmitted by NTSC without a compression encoding process.

At present, domestic terrestrial broadcasts both analog and digital broadcasts on a specific channel. For example, in the case of MBC, analog broadcast and digital broadcast are simultaneously transmitted. In this case, analog broadcast is indicated by 11-0 and digital broadcast is indicated by 11-1. The digital broadcast is at least twice as clear as the analog broadcast in terms of image quality.

In addition, with the commercialization of cable and / or satellite broadcasting, there are dozens to hundreds of channels in broadcast receivers.

And some users may want to watch only channels for digital broadcasting, which have better image quality than analog broadcasting. In this case, if the user uses the channel up / down button to change channels from dozens to hundreds, the user spends a lot of time to watch a desired broadcast, for example, a digital broadcast.

In addition, users, especially older users, it is not easy to recognize which channel is actually the channel for digital broadcasting in dozens or hundreds of channels. For example, when the channel is searched, the numbers 11-0 and 11-1 displayed on the screen do not distinguish well whether the broadcast is an analog broadcast or a digital broadcast.

Therefore, even if you use the number buttons on the remote control, it is not easy to know and watch digital broadcasting.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a digital broadcast receiver and a channel search method for searching only digital broadcast channels using a predetermined button of an input device.

In order to achieve the above object, a digital broadcast receiver according to the present invention comprises: an input device to which a button for selecting a digital broadcast channel is assigned; And a digital broadcasting channel list consisting of only digital broadcasting channels, and storing the digital broadcasting channel list. When the digital broadcasting channel selection button of the input device is input, the receiving unit tunes and displays channels in a corresponding order among the channels registered in the digital broadcasting channel list. Characterized in that it comprises a.

The input device is characterized in that the remote control.

A channel search method of a digital broadcast receiver having an input device assigned with a button for selecting a digital broadcast channel according to the present invention comprises the steps of: generating and storing a digital broadcast channel list consisting of only digital broadcast channels; And tuning and displaying channels in a corresponding order among channels registered in the digital broadcast channel list whenever the digital broadcast channel selection button of the input device is input.

The storing may include updating the digital broadcast channel list whenever the digital broadcast channel is changed.

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. At this time, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, by which the technical spirit of the present invention and its core configuration and operation is not limited.

The present invention assigns a button for searching for a digital broadcast channel to an input device, and searches only digital broadcast channels by pressing the button.

The input device includes a remote controller, a keyboard, a mouse, and the like. In the present invention, the remote controller will be described as an embodiment.

That is, a button for searching only digital broadcasting channels is allocated to the remote controller. In this case, the button may be a new button or may add the function to an existing button. This button is called a digital broadcast channel selection button for convenience of description.

The digital broadcasting receiver generates and stores a list consisting of digital broadcasting channels among all channels at the time of automatic channel setting or at user request. This list is called a digital broadcast channel list for convenience of explanation.

Therefore, whenever the digital broadcast channel selection button is pressed, channels in the digital broadcast channel list are sequentially searched for and displayed.

At this time, the user may delete or add a digital broadcast channel that the user does not want from the digital broadcast channel list.

FIG. 1 is a block diagram illustrating an embodiment of a digital broadcast receiver having such a function, and includes a control unit 100, a tuner 111, a demodulator 112, a decoder 113, a display processor 114, and a memory. 115, an OSD (On Screen Display) processor 116, and a remote controller 117.

That is, under the control of the controller 100, the tuner 111 tunes and restores only a specific channel frequency selected by a user using a channel selection button or a numeric button among channel frequencies received through any one of an antenna, a cable, and a satellite. Output to the grandfather 112.

The demodulator 112 demodulates the output signal of the tuner 111 in the inverse of the modulation scheme performed by the transmitter, and outputs the demodulated signal to the decoder 113 in the form of a transport stream. For example, if the tuned channel is modulated and transmitted in an 8VSB scheme, the demodulator 112 outputs a transport stream in a 188-byte packet unit after demodulating in the 8VSB scheme. At this time, 4 bytes of the 188 bytes are the header part, and actual data is carried in the payload part of 184 bytes. In the header, a packet ID (PID) for identifying whether the payload data is audio, video, or additional data is set.

Accordingly, the decoding unit 113 separates the audio / video / additional data stream from the demodulated transport stream with reference to the packet ID (PID), and decodes the separated audio / video / additional data stream with each decoding algorithm. Restore to the original state. In this case, the restored video signal is displayed on the TV screen via the video processor 114.

If a character or graphic is to be displayed on a TV screen such as menu selection, channel search, channel switching, volume change, etc., the character or graphic is processed by the OSD processing unit 116 and synthesized with the video signal by the video processing unit 114. Is displayed on the TV screen.

The memory 115 is used in audio / video / additional data stream reconstruction and also stores fonts for the OSD. The memory 115 also stores a digital broadcast channel list of the present invention. The digital broadcast channel list may be updated whenever digital broadcast channel information is changed by the control of the controller 100.

Whenever the digital broadcast channel selection button of the remote controller 117 is input, channels in the digital broadcast channel list are sequentially searched.

2 shows examples of a digital broadcast channel selection button according to the present invention.

2A illustrates an example of assigning a button to a digital broadcast channel selection button (eg, a digital channel). Each time the button is input, channels in the digital broadcast channel list are sequentially searched in a preset order.

For example, if 6-1,7-1,9-1,10-1,11-1 is registered in the digital broadcasting channel list, each time the button is input, the 6-1,7-1,9- Only channels corresponding to 1, 10-1 and 11-1 are sequentially tuned and displayed.

That is, there is an analog channel 7-0 between the 6-1 channel and the 7-1 channel. When the digital broadcast channel button is input, the analog channel 7-0 is not tuned in the tuner. The analog channel 7-0 can be pressed by pressing the normal channel up / down button or directly pressing the numeric key 7-0.

The digital broadcast channel may be selected using any one of a digital broadcast channel selection button, a channel up / down button, and a numeric key.

FIG. 2B shows an example of assigning two buttons to a digital broadcast channel selection button (e.g., a digital channel). One button (e.g., a button labeled +) searches for channels in the digital broadcast channel list in the up direction. The other button (e.g., indicated by-) is used to navigate in the down direction.

For example, if 6-1,7-1,9-1,10-1,11-1 is registered in the digital broadcast channel list and a digital broadcast channel selection button indicated by + is inputted, 6-1,7- Digital broadcast channels are searched in the order of 1, 9-1, 10-1, 11-1. On the contrary, when the digital broadcast channel selection button indicated by-is input, the digital broadcast channels are searched in the order of 11-1, 10-1, 9-1, 7-1, 6-1.

FIG. 2C is a button operated in a see-saw manner, and when a side named analog is pressed, all the channels or only channels for analog broadcasting are searched; Only broadcast channels can be searched.

For example, if 6-1,7-1,9-1,10-1,11-1 is registered in the digital broadcasting channel list, and the digital side button is input, the 6-1,7-1,9- Only channels corresponding to 1, 10-1 and 11-1 are sequentially tuned and displayed.

3 is a flowchart illustrating an example of performing channel search using the digital broadcast channel selection button.

That is, the digital broadcasting channel list is generated and stored only in the digital broadcasting channels among all the channels by automatic channel setting or user request (step 301).

When a digital broadcast channel selection button allocated to any one of FIGS. 2A to 2C is input (step 302), channels of a corresponding order in the digital broadcast channel list are tuned and displayed (step 303).

Assuming that 6-1,7-1,9-1,10-1,11-1 is registered in the digital broadcast channel list and that digital broadcast channel 6-1 has been previously tuned, the button is input again. Then digital broadcast channel 7-1 is tuned and displayed. In addition, in order to perform channel searching in the above-described order in FIG. 2B, a digital broadcasting channel selection button marked with + should be input.

On the other hand, the terms used in the present invention (terminology) are terms defined in consideration of the functions in the present invention may vary according to the intention or practice of those skilled in the art, the definitions are the overall contents of the present invention It should be based on.

The present invention is not limited to the above-described embodiments, and as can be seen in the appended claims, modifications can be made by those skilled in the art to which the invention pertains, and such modifications are within the scope of the present invention.

According to the digital broadcasting receiver and the channel searching method according to the present invention described above, a button for searching only a digital broadcasting channel is allocated to an input device such as a remote controller, and only the digital broadcasting channels are tuned and displayed each time the button is pressed. By doing so, there is an effect that it is convenient for the viewer who wants to search only digital broadcasting or cannot distinguish between analog broadcasting and digital broadcasting.

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)

An input device to which a button for selecting a digital broadcast channel is assigned; And It generates and stores a digital broadcast channel list consisting of only digital broadcast channels, and if the digital broadcast channel selection button of the input device is input, includes a receiver for tuning and displaying the channels of the corresponding order among the channels registered in the digital broadcast channel list Digital broadcast receiver, characterized in that configured to. The method of claim 1, And the input device is a remote controller. The method of claim 1, The digital broadcast channel selection button is assigned a single button, the button is used to search for channels in the digital broadcast channel list in a predetermined order. The method of claim 1, The digital broadcast channel selection button is assigned with a plurality of buttons, one button is used to search for channels in the digital broadcast channel list in the up direction, and the other button is used for searching in the down direction. Digital Broadcast Receiver. The method of claim 1, The digital broadcast channel selection button is assigned a button that operates in a seesaw manner, and one button is used to search for channels in the digital broadcast channel list in a predetermined order, and the other button is used to select all channels or analog channels. A digital broadcast receiver, which is used for searching. A channel searching method of a digital broadcasting receiver having an input device to which a button for selecting a digital broadcasting channel is assigned, the method comprising: Generating and storing a digital broadcast channel list consisting of only digital broadcast channels; And And tuning and displaying channels of a corresponding sequence among channels registered in the digital broadcasting channel list whenever the digital broadcasting channel selection button of the input device is input. 7. The method of claim 6, wherein said storing step And updating the digital broadcast channel list whenever the digital broadcast channel is changed.

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