KR100775700B1 - Fine Tuning Method of Broadcast Reception System - Google Patents

Abstract

The present invention is to fine tune the broadcast channel of the digital broadcast (Fine Tuning), for this purpose, the present invention, fine tuning by inputting the up / down key through the MFT (Manual Fine Tuning) menu screen for fine tuning Unlike the fine tuning operation signal during the digital broadcast reproduction in the broadcast receiving device receiving the digital broadcast, the corresponding channel information and the fine tuning information are provided, and whether the provided fine tuning information is initially set MFT value information. If the fine tuning information is the initial MFT value information, fine tuning is performed according to the preset fine tuning information. If the file tuning information is not the initial MFT value information, fine tuning is performed according to the provided fine tuning information. Display the fine tuning information or the provided fine tuning information, and change the displayed fine tuning information. By fine tuning according to the changed tuning tuning information, not only does it provide an interface for easily recognizing fine tuning information on a corresponding channel in a broadcast receiving device that receives digital broadcasting, but also fine tunes the corresponding channel according to the fine tuning information. You can do it.

Description

Fine tuning method of broadcast reception system {FINE TUNING METHOD OF BROADCASTING RECEPTION APPARATUS}

1 is a block diagram of a broadcast receiving apparatus suitable for performing fine tuning according to fine tuning information according to the present invention;

2 is a flowchart illustrating a process of performing fine tuning according to fine tuning information according to the present invention.

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

102: key input block 104: control block

106: tuning and demodulation block 108: decoding block

110: MPEG codec block 112: storage medium

114: Video and Audio Signal Processing Block 116: Menu Creation Block

The present invention relates to a method of fine tuning a digital broadcast channel, and more particularly, to fine tuning of a broadcast reception device suitable for fine tuning a broadcast channel according to fine tuning information in a broadcast reception device receiving a digital broadcast. It is about how.

As is well known, digital broadcasting provides clear picture quality and vivid sound quality compared to analog broadcasting because all signals transmitted from the broadcasting station to the home are all digital signals.

This digital broadcasting video is based on the number of points that can be displayed on the screen, which is 7 times the size of SDTV from the standard method (SDTV) having the resolution of 640 and 480 of the same level as the existing analog NTSC. It offers 18 formats of video, up to HDTV with a resolution of 1080.

In addition, the sound of digital broadcasting adopts Dolby AC-3 method, and the clear three-dimensional sound surpassing CD is reproduced vividly.In addition, the performance of digital broadcasting is not only improved but also data compression technology having high efficiency of 50 to 1 or more. Therefore, the number of reserved channels can be increased for each broadcasting station based on the SDTV standard, and bidirectional transmission can provide additional services completely different from existing analog broadcasting.

Meanwhile, a process of fine tuning a broadcast channel according to fine tuning information in a broadcast receiving apparatus for receiving a conventional digital broadcast will be described. A user may use an MFT (Manual) using an input means such as a remote controller or a keypad. Fine Tuning) Searches the menu screen one by one, displays the corresponding MFT menu screen, and provides only an interface for performing fine tuning by operating the up / down keys and the like, thereby receiving digital broadcasts. The user using the system was inconvenient to correctly recognize the fine tuning information.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, and a fine tuning method of a broadcast receiving apparatus that can improve user recognition by displaying fine tuning information as a numerical value in a broadcast receiving apparatus for receiving digital broadcasting. The purpose is to provide.

Another object of the present invention is to provide a fine tuning method of a broadcast receiving apparatus capable of changing the fine tuning information displayed through the broadcast receiving apparatus and fine tuning the broadcast channel according to the changed fine tuning information.

In order to achieve the above object, the present invention provides a method of fine tuning a broadcast channel in a broadcast receiving device receiving a digital broadcast, and if there is a fine tuning operation signal during reproduction of the digital broadcast, corresponding channel information and fine A first step of providing tuning information, a second step of checking whether the provided fine tuning information is an initially set MFT value, and fine tuning according to preset fine tuning information if the fine tuning information is the initially set MFT value. And if the file tuning information is not the initially set MFT value, fine tuning according to the provided fine tuning information, and displaying the preset fine tuning information or the provided fine tuning information when the fine tuning is performed. The fourth step and when the displayed fine tuning information is changed, The present invention provides a fine tuning method of a broadcast reception device including a fifth step of fine tuning.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

SUMMARY OF THE INVENTION The present invention provides a corresponding channel information and fine tuning information according to a fine tuning operation signal during digital broadcast reproduction in a broadcast receiving device receiving a digital broadcast, and if the provided fine tuning information is an initially set MFT value, Fine tuning according to the fine tuning information, if the file tuning information is not the initially set MFT value, fine tuning according to the provided fine tuning information, displaying the preset fine tuning information or the provided fine tuning information, and changing the displayed fine tuning information. When the fine tuning according to the modified tuning tuning information, it is possible to easily achieve the object of the present invention through this technical means.

1 is a block diagram of a broadcast receiving apparatus suitable for performing fine tuning according to fine tuning information according to the present invention, and includes a key input block 102, a control block 104, a tuning and demodulation block 106, and a decoding block. 108, MPEG codec block 110, storage medium 112, video and audio signal processing block 114, and menu generation block 116.

Referring to FIG. 1, the key input block 102 generates various operation signals for controlling the operation of a broadcast receiving apparatus, including an input means, for example, a remote controller, which is not shown by a user, and a user inputs a broadcast channel. When a key for fine tuning is inputted, a fine tuning operation signal for this is generated and provided to the control block 104.

In addition, the control block 104 performs overall operation control of the broadcast reception device, and provides a control signal for tuning an arbitrary broadcast channel to the tuning and demodulation block 106 and provides broadcast data of the tuned broadcast channel. The control signal for decoding is provided to the decoding block 108, and the control signal for processing the decoded broadcast signal in a recording method such as MPEG and storing it in the storage medium 112 at the time of broadcast recording, the storage medium 112 during broadcast reproduction. (B) providing a control signal for processing the broadcast signal or the decoded broadcast signal extracted from the MPEG codec to the MPEG codec block 110, and processing the broadcast signal to reproduce it through a monitor and a speaker (not shown). To provide a control signal to the video and audio signal processing block 114, and the like.

In addition, the control block 104 requests channel information and fine tuning information from the MPEG codec block 110 to the MPEG codec block 110 according to the fine tuning operation signal provided from the key input block 102 during broadcast reproduction. It is checked whether the provided fine tuning information is an initially set MFT (Manual Fine Tuning) value, and in the case of an initially set MFT value, fine tuning a broadcast channel according to preset fine tuning information (that is, intermediate frequency information according to the initially set MFT value). The control signal to be provided is provided to the tuning and demodulation block 106, and if it is not the initial MFT value, the control signal for fine tuning the broadcast channel is provided to the tuning and demodulation block 106 according to the fine tuning information provided. In this case, the channel information may include, for example, channel numbers of 5, 7, 9, and 11, and the fine tuning information may be provided as, for example, [0 × FF] when the MFT value is initially set. have.

Meanwhile, the control block 104 generates a menu screen for displaying broadcast channel information and fine tuning information for fine tuning the broadcast channel as numerical values, and generates a control signal for displaying the menu screen in the menu generation block 116. And the video and audio signal processing block 114. If there is a fine tuning information change manipulation signal through the menu screen, the input fine tuning information is changed and provided to the MPEG codec block 110. Control to store at 112. At this time, the control block 104 controls to store the displayed fine tuning information to the MPEG codec block 110 in the storage medium 112 when there is no fine tuning information change operation signal. Here, in the menu screen where the channel information and the fine tuning information are displayed, the channel number is a numerical value (for example, 5, 7, 9, 11, etc.), and the fine tuning value is a numerical value (for example, -50, -30, 30). , 50, etc.).

Next, the tuning and demodulation block 106 tunes any one of a plurality of broadcast channels received through an antenna (not shown) to demodulate and error correct broadcast signal packet data of a selected channel extracted from a transport stream. It passes to the decoding block 108 through the process of, and the like.

In addition, the tuning and demodulation block 106 fine-tunes the corresponding broadcast channel according to the fine tuning information provided from the control block 104 to decode the broadcast signal packet data of the selected channel through demodulation and error correction. Forward to block 108.

In addition, the decoding block 108 restores the compressed coded broadcast signal (broadcast program signal) of a specific channel to the original signal of the coded base using a decoding technique such as variable length decoding, inverse DCT, inverse quantization, and motion compensation. The reconstructed broadcast signal is transmitted to the MPEG codec block 110.

In addition, the decoding block 108 separates the additional information inserted in the broadcast signal, that is, the electronic program guide (EPG) information, and transmits it to the control block 104 to store it in a predetermined area in the memory (not shown).

In addition, the MPEG codec block 110 compresses the broadcast data to be transmitted to the storage medium 112 to store the compressed data by MPEG or the like, and during reproduction thereof, the specific broadcast data transmitted from the storage medium 112 is stored. It is decompressed by MPEG or the like and passed to the video and audio signal processing block 114 for playback.

In addition, in the MPEG codec block 110, the broadcast channel information and the fine channel information are extracted from the storage medium 112 and provided to the control block 104 according to the fine channel information request from the control block 104. The modified fine channel information transmitted from 104 is stored in the storage medium 112 together with the broadcast channel information.

In the video and audio signal processing block 114, the menu screen delivered from the menu generation block 116 is mixed with the image data and displayed on a monitor (not shown).

Next, the menu generation block 116 generates a reservation recording setting menu screen according to the control signal from the control block 104, and transfers it to the video and audio signal processing block 114, and then, when the recording ends, outputs a plurality of files. A menu screen for separating and selecting is generated and delivered to the video and audio signal processing block 114.

Meanwhile, in the present invention, the decoding block and the MPEG codec block are divided and described. However, the present invention can be described as one component block that performs decoding processing, compression processing, decompression processing, and the like by using a method such as MPEG.

Next, in the broadcast receiving apparatus having the above-described configuration, when there is a fine tuning operation signal during broadcast reproduction, channel information and fine tuning information are provided. When the fine tuning information has an initial MFT value, the preset fine Fine tuning the corresponding broadcast channel according to the tuning information, and if the initial MFT value is not set, fine tune the corresponding broadcast channel according to the provided fine tuning information, and display the fine tuning information with the channel information, thereby changing the fine tuning information. And the process of storing.

2 is a flowchart illustrating a process of performing fine tuning according to fine tuning information according to the present invention.

2, in the broadcast reproduction mode of the broadcast reception device (step 202), in the control block 104, a user inputs a fine tuning key of a corresponding broadcast channel using an input unit (not shown), for example, a remote controller. In case of input, it is checked accordingly whether there is a fine tuning operation signal generated from the key input block 102 (step 204).

As a result of the check in step 204, if there is a fine tuning operation signal, the control block 104 requests channel information and fine tuning information from the MPEG codec block 110, and accordingly, the MPEG codec block 110 The fine tune-in information according to the channel information of the broadcast channel is extracted from the storage medium 112 and provided to the control block 104 (step 206). In this case, the channel information may include, for example, channel numbers of 5, 7, 9, and 11, and the fine tuning information may be provided as, for example, [0 × FF] for an initial value. .

Then, the control block 104 checks whether the fine tuning information provided together with the channel information from the MPEG codec block 110 has a manually set MFT (Manual Fine Tuning) value (step 208).

As a result of the check in the step 208, when the fine tuning information has an initial set MFT value (for example, [0xFF]), the control block 104 generates a control signal for fine tuning according to the preset fine tuning information. The tuning and demodulation block 106 is provided, and accordingly, the tuning and demodulation block 106 tunes the corresponding broadcast channel (step 210). Herein, the preset fine tuning information means intermediate frequency information according to the initially set MFT value.

On the other hand, when the fine tuning information is the initial MFT value (for example, a value other than [0 × FF]) as a result of the check in the step 208, the control block 104 and the channel information from the MPEG codec block 110 According to the fine tuning information provided together, a control signal for fine tuning is provided to the tuning and demodulation block 106, and accordingly, the tuning and demodulation block 106 tunes the corresponding broadcast channel (step 212).

In addition, the control block 104 generates a menu screen that displays preset fine tuning information provided by the tuning and demodulation block 106 or fine tuning information provided by the MPEG codec block 110, and controls to display the menu screen. The signal is provided to the menu generation block 116 and the video and audio signal processing block 114, and thus the fine tuning information menu screen generated through the menu generation block 116 displays the video and audio signal processing block 114. The signal is processed and mixed with the video signal and displayed on a monitor (not shown) (step 214). Here, in the menu screen where the channel information and the fine tuning information are displayed, the channel number is a numerical value (for example, 5, 7, 9, 11, etc.), and the fine tuning value is a numerical value (for example, -50, -30, 30). , 50, etc.).

Meanwhile, in the control block 104, when the user inputs a key for changing the fine tuning information through the fine tuning information menu screen displayed by using an input unit (not shown), for example, a remote controller, the key input block accordingly. It is checked whether there is a fine tuning information change operation signal generated from 102 (step 216). The input of a key for changing such fine tuning information can wait for a predetermined time, for example, 10 seconds, 15 seconds, and the like, and if necessary, within a permissible range (for example, -50 to 50, etc.) with a desired MFT value. Numeric values can be entered.

As a result of the check in the step 216, when there is a fine tuning information change operation signal, the control block 104 controls the tuning and demodulation block 106 according to the changed fine tuning information to fine tune the corresponding broadcast channel. At the same time, the changed fine tuning information is provided to the MPEG codec block 110 together with the channel information and controlled to be stored in the storage medium 112 (step 218).

On the other hand, if there is no fine tuning information change operation signal as a result of the check in the step 216, the control block provides the displayed fine tuning information to the MPEG codec block 110 along with the channel information and stores it in the storage medium 112. To control (step 220). In this case, the control block 104 provides the displayed fine tuning information to the MPEG codec block 110 together with the channel information even when there is a displayed fine tuning information storage manipulation signal instead of the fine tuning information changing manipulation signal. 112).

Meanwhile, in the present invention, the decoding block and the MPEG codec block are divided and described. However, the present invention can be described as one component block that performs decoding processing, compression processing, decompression processing, and the like by using a method such as MPEG.

Accordingly, when there is a fine tuning operation signal while the broadcast receiving device tunes and reproduces a broadcast channel, fine tuning is performed according to the preset fine tuning information according to the initial MFT value of the provided fine tuning information, or the fine tuning information is provided. Fine tuning can be performed according to the present invention, and the displayed fine tuning information can be changed to fine tune the corresponding channel according to the changed fine tuning information.

In the foregoing description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto. Those skilled in the art will appreciate that the present invention may be modified without departing from the spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

As described above, the present invention is different from the conventional method of fine tuning by inputting an up / down key through a MFT (Manual Fine Tuning) menu screen for fine tuning. Provide the channel information and the fine tuning information according to the fine tuning operation signal, and fine tune according to the preset fine tuning information or the provided fine tuning information according to whether the provided fine tuning information is an initial MFT value, When tuning, the preset fine tuning information or the provided fine tuning information is displayed, and when the displayed fine tuning information is changed, fine tuning is performed according to the changed tuning tuning information, so that the fine tuning information for the corresponding channel in the broadcast receiving apparatus receiving the digital broadcast Not only does it provide an easy-to-understand interface It is possible to fine tune the channel effectively according to the fine tuning information.

Claims (4)

A method of fine tuning a broadcast channel in a broadcast receiving device receiving a digital broadcast, A first step of providing channel information and fine tuning information if there is a fine tuning operation signal during reproduction of the digital broadcast; A second step of checking whether the provided fine tuning information is an initially set MFT value; If the fine tuning information is the initially set MFT value, fine tuning according to preset fine tuning information, and if the file tuning information is not the initially set MFT value, fine tuning according to the provided fine tuning information; A fourth step of displaying the preset fine tuning information or the provided fine tuning information when performing the fine tuning; A fifth step of fine tuning according to the changed panning tuning information when the displayed fine tuning information is changed Fine tuning method of a broadcast receiving device comprising a. The method of claim 1, In the fine tuning information of the fourth step, the channel information and the fine tuning information are displayed as numerical values. The method of claim 1, The fine tuning information of the third and fifth steps is stored together with the channel information. delete

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