KR19990015256A - Emergency Broadcast Interrupt Method Using Teletext - Google Patents

Abstract

In the present invention, especially when a movie or the like is being played or watched through a VCR, the TV station cuts out a video / audio signal for transmitting or watching a video / audio signal for emergency information such as breaking news. An emergency broadcast interrupt method using teletext for outputting the emergency information.

Conventionally, when watching a playback screen, all channels are scanned by the tuner unit to search for data corresponding to an emergency broadcast, store the searched data, and then interrupt the playback screen while configuring the emergency broadcast as an OSD screen to switch to a video signal by switching selection. The emergency broadcast is output and the audio signal is muted.

According to the present invention, when an emergency broadcast is received while watching a playback screen, the video and audio data of the emergency broadcast are sliced as a sample and a holding signal, the sliced video and audio signals are stored, and the video and audio of the playback screen are interrupted. The video and audio of the emergency broadcast can be output so that the emergency broadcast can be watched even during the playback screen.

Description

Emergency Broadcast Interrupt Method Using Teletext

In the present invention, especially when watching a movie using a VCR, etc., when receiving a emergency broadcast from a broadcasting station and using a teletext that allows the viewer to recognize the existing display only by including a voice included Emergency broadcast interrupt method.

As shown in FIG. 1, an emergency broadcast interruption apparatus using a conventional teletext is shown.

Tuner unit 1 which scans all channels and detects whether there is data corresponding to emergency broadcasting on a basic data transmission (VBI) line, and slicing signals detected by the tuner unit only pure data unit. A data slice unit 2, a decoder unit 3 for decoding the sliced data, a D / A converter 4 for converting the decoded data into an analog signal, and switching the broadcast signal and reproduction signal To control the emergency broadcast detection of the video switching unit 5 and the tuner unit 1 to select and output the signal and recognize the signal for emergency broadcast from the decoder 3 so as to output the emergency broadcast according to the viewing of the playback signal. A control unit 6 for controlling each unit, a memory unit 7 storing the data decoded by the decoding unit 3, and an image switching unit for outputting the decoded image data to the screen in the form of SUPERIMPOSE. 5) to And applying image addition unit 8, a reproduction unit (9) for outputting a reproduction signal such as a VCR.

The operation of the conventional emergency broadcast interrupt apparatus configured as described above will be described with reference to FIG. 1 as follows.

First, a user outputs a movie or the like through a VCR to the screen by switching the switching unit 5 to view a playback signal by the playback unit 9.

On the other hand, the tuner unit 1 checks whether all the channels of the signal transmitted from the broadcasting station have teletext data corresponding to the emergency broadcast on the basic data transmission (VBI) line by the control signal of the control unit 6. Detect it,

At this time, when the teletext data is received from the broadcasting station by the tuner unit 1, the tuner unit 1 detects the received teletext data and applies it to the data slice unit 2, and the data slice unit 2 ) Filters only the pure data by the S / H (Sample / Holding) signal of the controller 6 to the applied data.

The decoding unit 3 receiving the teletext data filtered by the data slice unit 2 decodes and stores the decoded bit data in the memory unit 7 as predetermined (n) bit data. The data is connected to the control unit 6 to recognize that the emergency broadcast data has been received to recognize the reception of the emergency broadcast data.

Recognizing the emergency broadcast reception, the control unit 6 controls the switching unit 5 by interrupting only the video signal on the playback screen and then switching the emergency broadcast data.

The n-bit data stored in the memory unit 7 is converted into an analog signal through the D / A converter 4, applied to the image switching unit 5, and the corresponding breaking news converted by the decoder 3 is performed. The image adding unit 8 is outputted on the screen in the form of addition or in the form of an OSD screen configuration.

In this case, the voice output for the emergency broadcast is not processed, but the voice output is processed as the existing reproduced voice or mute.

That is, interruption of the playback screen when transmitting an emergency broadcast, decoding the data carried in the teletext, and configuring the screen to output the screen in the form of addition, and the audio output is processed as the existing playback voice or mute.

Conventionally, only the screen is configured by an additional method of interrupting the playback screen when transmitting an emergency broadcast and then decoding the data loaded in the teletext, and processing the audio as the existing playback voice or mute, so that the viewer is not located in front of the screen. There is a problem that the effect can be halved because there is a lot of things that do not recognize emergency broadcasting.

In order to solve the above problems, the present invention slices the teletext data detected according to emergency broadcasting into video and audio, stores the sliced data in the video and audio memory through a decoder, and stores the stored video and audio. To determine the presence or absence of emergency information data from the data, and to convert the stored video and audio signals to analog signals according to the results so that the user can be recognized as an image of the emergency broadcast while the audio can be recognized even while watching the playback screen It is in a ship.

1 is a block diagram of an emergency broadcast interruption apparatus using a conventional teletext;

Figure 2 is a flow chart showing the progress of the emergency broadcast interrupt method using the present invention teletext frame

Figure 3 is a block diagram showing an embodiment of an emergency broadcast interrupt method using the present invention teletext

Figure 4 is a waveform diagram of the video / audio data signal of the emergency broadcast using the present invention teletext

Emergency broadcast interrupt method using the present invention teletext for achieving the above object as shown in Figure 2,

A first step of receiving a broadcast signal simultaneously with the playback operation of the VCR, a second step of slicing and storing information data among the received broadcast signals, and a third step of detecting whether there is emergency information information among the stored information data; And a fourth step of processing the video and audio signals corresponding to the broadcast signal according to the detection result, and pausing the playback operation after completing the video and audio signal processing and outputting the processed video and audio signals. It is characterized by proceeding to the fifth step.

3 illustrates an embodiment of a system block diagram for implementing the emergency broadcast interrupt method using the teletext described above.

A tuner unit 11 for receiving a broadcast signal and a data slicer 12 for slicing the broadcast signal received from the tuner unit 11 into video and audio data by the control signal S / H of the controller 15. A decoder 13 for decoding video and audio data sliced by the data slicer 12, a video D / A converter 14 for converting the decoded video data into a video analog signal, An audio D / A converter 15 for converting the decoded audio data into an audio analog signal, and an image switching unit for switching and selecting the video analog signal or a reproduced video signal by a control signal of the controller 18; 16), a voice switching unit 17 for switching the voice analog signal and the reproduced voice signal by the control signal of the control unit 18, and a teletext data signal from the decoder 13 to the detection result. According to the visual and A controller 18 for controlling each unit to be output as an audio signal, an image memory unit 19 for storing the decoded image data, and a voice memory unit 20 for storing the decoded audio data. And an image adding unit 21 for applying to the image switching unit 16 to output to the screen in the form of addition using the data decoded by the decoder 13, and an image reproducing unit 22 for outputting a video reproduction signal. ) And a voice reproducing unit 23 for outputting a voice reproducing signal.

Here, the data slicer 12 includes an image data slicer 12A for slicing the image data by the control signal S / H of the controller 18 and a control signal S / H of the controller 18. Is configured to include a voice data slice section 12B for slicing voice data.

The operation of the emergency broadcast interrupt method using the teletext of the present invention configured as described above will be described with reference to FIG. 3.

When the user is watching the playback screen through the video and audio playback units 22 and 23 such as a movie through the VCR, the tuner unit 11 scans all channels of the broadcast signal received from the antenna.

In this case, according to the broadcast signal received by the tuner 11, the data slicer 12 is sliced into video and audio data by control signals S / H (Sample / Hold) of the controller 18. I'm going to

As shown in FIG. 4, the data input to the data slice unit 12 is a CRI (Crock), which is a synchronization signal for a synchronization unit and teletext data, such as a conventional caption or a KBS. Run In) and a 16-bit or 16-bit or more data portion, which is composed of a larger amount of audio data (n + 1) than the amount of video data (n).

Therefore, in order to slice both data (video / audio) of the data slice unit 12 at the same time, the image data slice unit 12A receives the input data by the control signal S / H of the control unit 18. The voice data slice unit 12B filters the voice data by the S / H signal of the controller 18.

Here, since the video and audio processing time are different, the data slice unit 12 holds the video output until the audio processing is completed, and then outputs the video with the completion of the audio signal.

Since the sliced video and audio data are applied to the decoder 13 through each line, the decoder 13 decodes the applied video data and stores the video data in the video memory unit 19 to decode the audio data. It is stored in the voice memory unit 20.

Here, the stored audio data requires a larger amount of data than the image data, but since the amount of data received for a predetermined time is smaller than that of the image data, the stored audio data is stored in the audio memory unit 20 and then output together with the image data.

At this time, the control unit 18 is connected to the decoder 13 by a serial data line to detect whether there is information (teletext information) data indicating an emergency among information data stored while exchanging data.

When the control unit 18 determines that the emergency broadcast data is received by the decoder 13 according to the detection result, the controller 18 recognizes the emergency broadcast data and controls the emergency broadcast data to be output.

The teletext for notifying the emergency stored in the image memory unit 19 is applied to the image D / A converter 14, converted into an image analog signal, and applied to the image switching unit 16, and the voice memory unit 20 is provided. The tele text stored in is applied to the voice D / A converter 15, converted into a voice analog signal, and applied to the voice switching unit 17.

When the emergency information data is processed into the video and audio signals of the broadcast signal as described above and applied to the video and audio switching unit 16, 17, the control unit 18 is the video and audio switching unit 16, 17 To control the

Recognizing the emergency broadcast reception, the control unit 18 controls the video and audio switching unit 16 and 17 to interrupt the video / audio signal being reproduced from the current video playback unit 22 and the audio playback unit 23. Switching will be switched.

The emergency broadcast data is analog-converted through the video and audio D / A converters 14 and 15 by switching switching of the video and audio switching units 16 and 17, and thus the video and audio switching units 16 and 17. Through) and simultaneously outputs video and audio signals of emergency broadcast data.

In this case, the image data may be output in the form of a complete OSD and may be viewed in the form of addition by the image adding unit 21.

Here, the voice processing time is long, so the final output start depends on the voice processing completion time.

In addition, in the case of the video data and the audio data presented as described above, in addition to the method of decoding the corresponding data and outputting the screen / audio when the ID is detected, the screen is simply switched to the EE mode screen of the corresponding channel. For example, there is also a method of receiving emergency broadcast data and informing the user even when the power is turned off.

In another embodiment of the present invention, the emergency broadcast is output on any one channel (eg, left voice) among the left and right voice data outputs, so that the emergency broadcast voice signal is output on the left side and the audio reproduction signal is output on the right side. You can also print it out.

The present invention interrupts the playback signal when receiving an emergency broadcast while watching a movie on a screen through a VCR or the like so that only the video data is output together with audio data so that the viewer can visually and audibly recognize it. In addition, there is an effect that can be recognized as a voice signal even if the viewer misses the screen.

Claims (1)

A first step of receiving a broadcast signal at the same time as the playback operation by the VCR, a second step of slicing and storing information data in the received broadcast signal, and a third step of detecting whether there is information data informing of an emergency among the information data And a fourth step of processing the video and audio signals corresponding to the broadcast signal according to the detection result of the third step; and after the processing of the video and audio signals is completed, the playback operation by the VCR is paused and the video and And a fifth step of simultaneously outputting a voice signal.