KR19990081000A - Broadcast Mode Control Method of Satellite Broadcast Receiver - Google Patents

Abstract

The present invention relates to a broadcast mode control method of a satellite broadcast receiver which allows a user to selectively simultaneously view a video signal of a general A / V channel and an audio signal of an audio-only channel received by a satellite broadcast receiver. When the satellite broadcast receiver receives and outputs a video signal and an audio signal of a general A / V broadcast channel and receives a key signal for converting the output audio signal into another arbitrary broadcast mode, the satellite broadcast receiver is input. Reading respective audio channel information received at and displaying an audio selection menu screen including the read plurality of audio channels; When an audio signal for any one of the displayed plurality of audio channels is selected, the output of the audio signal of the A / V channel is cut off and the audio signal of the selected channel is extracted to convert the extracted audio signal into the A / V. Outputting together with the video signal of the V channel.

Description

Broadcast Mode Control Method of Satellite Broadcast Receiver

The present invention relates to a satellite broadcast receiver, and more particularly, to a broadcast mode control method of a satellite broadcast receiver suitable for mixing and controlling a video channel and an audio broadcast channel of a satellite broadcast receiver.

Satellite broadcasting is a broadcasting system that can receive a broadcast signal from a ground station (broadcasting earth station) using a broadcasting satellite and receive it directly from a satellite receiving antenna in each home. Receives a digital broadcast signal, extracts a broadcast signal of a selected channel among broadcast signals received by a transport demultiplexor, and decodes the extracted broadcast signal using a MPEG (Motion Picture Expert Group) method to provide a display device. Is configured to.

In addition, unlike the conventional terrestrial broadcasting, providers providing such satellite broadcasting services use various broadcasting channels such as HDTV broadcasting channels, audio dedicated channels, and data service channels in addition to general A / V channels to diversify services and program diversification. By providing, the user can provide a more advanced broadcasting service. Therefore, the user can select a specific broadcast mode desired by the satellite broadcast receiver. However, in the conventional satellite broadcast receiver, a function of simultaneously selecting one or more broadcast modes is not provided.

In other words, the user selects and watches only the video of any A / V broadcast channel while listening to the audio signal provided by another audio channel or while listening to the audio broadcast provided by the specific audio channel. The ability to select only is not provided. If such satellite broadcasting receivers allow users to select and view video and audio signals in different broadcast modes, they will be able to meet a wider variety of user needs. .

Accordingly, an object of the present invention is to provide a method for controlling a broadcast mode of a satellite broadcast receiver in which a user can select and simultaneously view audio signal and video signals in different broadcast channels in a satellite broadcast receiver. There is this.

According to an embodiment of the present invention, a plurality of broadcast channels according to a general A / V broadcast mode and an audio-only broadcast mode provided from a satellite are received and displayed on a screen through a predetermined signal processing process. A method of controlling a broadcast mode of a satellite broadcast receiver, the method of converting the output audio signal into another arbitrary broadcast mode while the satellite broadcast receiver receives and outputs a video signal and an audio signal of a general A / V broadcast channel. A first step of checking input of a key signal; A second step of reading the audio channel information received by the satellite broadcasting receiver when the key signal is input, and displaying an audio selection menu screen including the read plurality of audio channels; A third step of blocking an output of an audio signal of the A / V channel and extracting an audio signal of the selected channel when an audio signal of any one of the displayed plurality of audio channels is selected; And a fourth step of outputting the extracted audio signal together with the video signal of the A / V channel.

According to another embodiment of the present invention, a plurality of broadcast channels according to a general A / V broadcast mode and an audio-only broadcast mode provided from a satellite are received and displayed on a screen through a predetermined signal processing process. A broadcast mode control method of a satellite broadcasting receiver, wherein the satellite broadcasting receiver receives a broadcast signal of an audio dedicated channel and outputs only an audio signal, and receives a video signal of a general A / V broadcast channel received by the satellite broadcasting receiver. Checking a input of a key signal for selection; A second step of reading information on an A / V broadcast channel received by the satellite broadcast receiver when the key signal is input, and displaying a video selection menu screen including the read plurality of A / V broadcast channels; Extracting only a video signal of the selected channel when a video signal of any one of the displayed plurality of A / V channels is selected; And a fourth step of outputting the extracted video signal together with the currently output audio signal.

1 is a block diagram of a satellite broadcast receiver suitable for applying a broadcast mode control method of a satellite broadcast receiver according to an embodiment of the present invention;

2 is a view for explaining a broadcast mode control method of a satellite broadcasting receiver according to an embodiment of the present invention;

3A is a flowchart illustrating a broadcast mode control process of a satellite broadcasting receiver according to an embodiment of the present invention;

3B is a flowchart illustrating a broadcast mode control process of a satellite broadcast receiver according to another preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: key input section 15: tuner and demodulation section

20: transport demultiplexer 25: microcomputer

30: MPEG decoder 35: audio signal processing unit

40: video signal processing unit 45: memory unit

50: menu generator

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

1 is a block diagram of a satellite broadcast receiver suitable for applying a broadcast mode control method of a satellite broadcast receiver according to an exemplary embodiment of the present invention. The key input unit 10, the tuner and demodulator 15, and transport demultiplexing are shown in FIG. The unit 20, the microcomputer 25, the MPEG decoder 30, the audio signal processor 35, the video signal processor 40, the memory 45, and the menu generator 50 are included.

Referring to FIG. 1, the key input unit 10 is composed of key metrics on a remote controller or its own panel to generate a corresponding key signal by a user's operation and provide the corresponding key signal to the microcomputer 25 to be described later. 15 receives a broadcast signal received through a broadcast signal receiver (i.e., a satellite reception antenna) (not shown) based on a control signal provided from the microcomputer 25 and converts the received broadcast signal into an intermediate frequency. After the process, demodulation and error correction are performed to restore the transport stream. The transport demultiplexer 20 extracts the broadcast signal and the PAT / PMT data for each channel from the signals transmitted from the tuner and the demodulator 15, and then reconstructs the EIT data of the video and audio and each channel from the signals. Service data is extracted and provided to the microcomputer 25.

On the other hand, the microcomputer 25 is a microprocessor that controls the overall operation of the satellite broadcasting receiver. When the user inputs a specific command by operating the key input unit 10, various types of functions for performing a function corresponding to the input key signal are provided. Generate a control signal. In addition, the microcomputer 25 stores various additional information (including EIT information) extracted from the transport demultiplexer 20 described above in a predetermined area of the memory unit 45. Each channel information, program information for each channel, voice multiplex and language information are included. When the user selects an arbitrary broadcasting channel, the microcomputer 25 reads various additional information and service data stored in the memory unit 45 to transmit a video signal of the selected channel through the transport demultiplexing unit 20. And demultiplexing the audio signal so that only the video and audio signals corresponding to the broadcast signal having the PID set are transmitted.

The MPEG decoder 30 may vary the compressed and encoded video signal in consideration of spatiotemporal and spatial correlation of a compressed and encoded audio signal and a video signal, for example, a video signal, of the bit stream output from the transport demultiplexer 20. A decoding method such as length decoding, inverse DCT, inverse quantization, and motion compensation is used to restore the original signal before encoding. The audio signal processor 35 converts the digital audio signal decoded and output from the MPEG decoder 30 into an analog audio signal and outputs the same through an unillustrated speaker. The video signal processor 45 also includes an MPEG decoder 30. ) Is converted into an NTSC or PAL analog video signal through a predetermined signal processing process and then displayed on a monitor (not shown).

On the other hand, in addition to the above-described various additional information, the memory unit 45 stores a plurality of channel information for various broadcast modes received by the satellite broadcast receiver, for example, each broadcast mode (general A / V broadcast mode, audio broadcast mode). Information, language information, and voice multiplexing are stored so that the microcomputer 25 can distinguish each channel provided to the satellite broadcasting receiver.

The menu generating unit 50 reads from the memory unit 45 to provide the video signal processing unit 40 by configuring various types of data provided through the microcomputer 25 as a menu screen. That is, the menu generating unit 50 pre-stores various types of menu screen format information provided by the satellite broadcasting receiver, and receives various additional data stored in the memory unit 45 from the microcomputer 25 to provide a menu of a predetermined type. It is configured as a screen and provided to the video signal processor 40. Accordingly, the video signal processor 40 overlaps and displays the decoded video signal provided from the MPEG decoder 30 and the menu screen provided from the menu generator 50.

In the satellite broadcasting receiver configured as described above, the user manipulates the key input unit 10 to listen to an arbitrary audio signal instead of the audio signal of the channel currently being viewed while the user selects and watches an arbitrary A / V broadcasting channel. When the key signal is input, the microcomputer 25 displays the audio selection menu screen as shown in FIG. 2A through the menu generator 50 through the menu generator 50.

On the other hand, the audio selection menu screen displayed at this time displays each audio channel received by the satellite broadcasting receiver. If the broadcasting program of the channel being watched is voice multicasting, as shown in the drawing, Audio mode, i.e., main audio (for example, Korean) and sub-audio (for example, English). That is, when the user inputs a corresponding key signal to switch the audio mode for the channel currently being watched by the audio, the microcomputer 25 first determines whether the voice is multiplied with the current channel, The information on each audio channel is extracted and provided to the menu generator 50, and the menu generator 50 configures the audio information provided from the microcomputer 25 as an audio selection menu screen as shown in FIG. 2A. To be displayed on the screen by the video signal processor 40.

When the user selects the main voice (Korean) or the sub-audio (English) of the voice multi-mode by operating the key input unit 10 while the audio selection menu screen is displayed through the above-described process, the microcomputer 25 Generates a control signal to the transport demultiplexer 20 to output only the audio signal of the mode selected by the user from the audio signal for the current broadcast channel. Accordingly, the audio signal corresponding to the language selected by the user among the audio signals of the voice multi-mode for the corresponding channel is output through the MPEG decoder 30 and the audio signal processor 35.

On the contrary, if the user operates the key input unit 10 to select an arbitrary audio channel while the audio selection menu screen as shown in FIG. 2A is displayed, the microcomputer 25 may select the memory unit 45. The transport demultiplexer 20 generates a control signal for reading information (including ID information) stored in each of the channels and extracting a signal of an audio channel selected by the user. In addition, the transport demultiplexer 20 extracts a signal for an audio channel selected by a user based on a control signal provided from the microcomputer 25 and provides it to the MPEG decoder 30, thereby replacing the currently output audio signal. The audio signal of the audio channel selected by the user is output through the speaker through a predetermined signal processing process. That is, an audio signal of a specific audio channel that is different from the video signal of the general A / V channel displayed on the current screen is output.

On the other hand, the user can select an audio channel instead of a general A / V broadcasting channel to listen to only the audio signal of the corresponding channel. In this case, since the video signal does not exist in the corresponding audio channel, the screen is displayed. The display is not displayed. If the user listens to the audio signal currently being output and inputs a corresponding key signal by operating the key input unit 10 to display only images of other general A / V channels on the screen, the microcomputer 25 generates a menu. The unit 50 displays the video selection menu screen as shown in FIG. 2B.

When the user selects a desired channel using the video selection menu screen displayed on the screen, the microcomputer 25 generates a control signal to the transport demultiplexer 20 to display the video of the channel selected by the user. Allow the signal to be output. In addition, since the MPEG decoder 30 decodes the video signal output from the transport demultiplexer 20 and provides the video signal to the video signal processor 40, the video of the channel selected by the user together with the currently output audio signal is displayed. Is displayed. As a result, the user can select and watch the video signal and the audio signal in different channels.

3A is a flowchart illustrating a broadcast mode control process of a satellite broadcast receiver according to a preferred embodiment of the present invention. A series of processes described above with reference to the accompanying drawings will be described in detail as follows.

During operation of the satellite broadcasting receiver, the video signal and the audio signal for the general A / V broadcasting channel selected by the user are tuned and output through the monitor and the speaker (not shown) through a predetermined signal processing (step 301). If a key signal for selecting an audio signal of another specific channel is input instead of the audio signal of the channel being used (step 303), the microcomputer 120 determines whether the voice of the channel currently being watched is multiplied from each channel information stored in the memory 45. And information about the audio channel provided by the satellite broadcast receiver (step 305). As a result of the reading, if the audio mode of the A / V broadcast channel being watched is voice multi-mode, The language information is provided to the menu generating section 50 together with the audio channel information provided to the satellite broadcasting receiver. The audio selection menu screen as shown is displayed (step 307).

When the key signal for selecting an arbitrary audio channel or an audio mode is input from the key input unit 10 while the above-described step 307 is displayed with the audio selection menu screen as shown in Fig. 2A (step 309), The microcomputer 25 generates a control signal to the transport demultiplexer 20 in response to the key signal to block the output of the audio data for the channel currently being watched (step 311). A control signal for extracting the selected audio data is generated. Accordingly, the transport demultiplexer 20 extracts and outputs audio data corresponding to the audio mode or channel selected by the user according to the control signal of the microcomputer 1200 (step 313), and the extracted audio data is an MPEG decoder. 30 and the audio signal processor 35 are output to the speaker (not shown) through a predetermined signal processing process (step 315).

As a result, when the user views the general A / V broadcasting mode of the satellite broadcasting receiver, the user can selectively view the audio signal of the channel that he / she wants regardless of the channel currently being watched.

3B is a flowchart illustrating a broadcast mode control process of a satellite broadcast receiver according to another embodiment of the present invention. Hereinafter, a series of processes described above with reference to the accompanying drawings will be described in detail.

Unlike the previous embodiment of the present invention described above, the operation of the satellite broadcasting receiver tunes an arbitrary audio channel selected by the user and outputs it to a speaker (not shown) through a predetermined signal processing process (step 351). If only the audio signal of the selected audio channel is output through the speaker and the video signal is not displayed, and the key signal for selecting the video signal is input through the key input unit 10 (step 353), the microcomputer 25 stores the memory. The channel information including the video signal, that is, the information about the general A / V broadcasting channel, is read from the channel information of the satellite broadcasting receiver stored in the unit 45 (step 355).

In this case, the read channel information is displayed on the video selection menu screen as shown in FIG. 2B through the menu generator 50. That is, a video selection menu screen including information on all A / V broadcast channels of the satellite broadcasting receiver is displayed on the screen in the form as shown in FIG. 2B (step 327), and again from the key input unit 10 When a key signal for selecting an A / V channel is input (step 359), the microcomputer 25 generates a control signal to the transport demultiplexer 20 to select the A / V channel selected in step 259. Video data is extracted (step 361).

Therefore, the video signal of the A / V channel selected by the user together with the audio signal currently being listened to is displayed on the screen through the MPEG decoder 30 and the video signal processor 40 (step 363), so that the user selects the audio channel. You can watch the video while listening.

The user can selectively watch the video signal of the general A / V channel and the audio signal of the audio-only channel received by the satellite broadcasting receiver, thereby improving the function of the satellite broadcasting receiver, and thus more and more. There is an effect that can satisfy the needs of various users.

Claims (3)

A method of controlling a broadcast mode of a satellite broadcast receiver for receiving a plurality of broadcast channels according to an A / V broadcast mode and an audio-only broadcast mode provided from a satellite and displaying the same on a screen through a predetermined signal processing process, A first step of checking an input of a key signal for switching the output audio signal to another arbitrary broadcasting mode while the satellite broadcasting receiver receives and outputs a video signal and an audio signal of an A / V broadcasting channel; A second step of reading the audio channel information received by the satellite broadcasting receiver when the key signal is input, and displaying an audio selection menu screen including the read plurality of audio channels; A third step of blocking an output of an audio signal of the A / V channel and extracting an audio signal of the selected channel when an audio signal of any one of the displayed plurality of audio channels is selected; And a fourth step of outputting the extracted audio signal together with the video signal of the A / V channel. The method of claim 1, wherein the second step, A first step of reading the audio channel information received by the satellite broadcasting receiver when the key signal is input, and determining whether the voice signal is multiplied with the audio signal of the A / V channel; As a result of the determination, when the audio signal of the A / V channel is the voice multi mode, displaying an audio selection menu screen including language information according to the read plurality of audio channels and the voice multi mode of the A / V channel. The broadcasting mode control method of the satellite broadcasting receiver further comprising a second process. A method of controlling a broadcast mode of a satellite broadcast receiver for receiving a plurality of broadcast channels according to an A / V broadcast mode and an audio-only broadcast mode provided from a satellite and displaying the same on a screen through a predetermined signal processing process, A first step of checking input of a key signal for selecting a video signal of an A / V broadcast channel received by the satellite broadcast receiver while the satellite broadcast receiver receives a broadcast signal of an audio dedicated channel and outputs only an audio signal ; A second step of reading information on an A / V broadcast channel received by the satellite broadcast receiver when the key signal is input, and displaying a video selection menu screen including the read plurality of A / V broadcast channels; Extracting only a video signal of the selected channel when a video signal of any one of the displayed plurality of A / V channels is selected; And a fourth step of outputting the extracted video signal together with the currently output audio signal.