KR20090039860A - TV information automatic detection and display system - Google Patents

Abstract

An automatic TV information detection method and a display system thereof are provided to maximize an effect of emergency broadcasting, capable of turning on a TV system by detecting a signal of the emergency broadcasting to lead more people to watch the emergency broadcasting. An emergency broadcasting signal separation and processing unit separates an emergency broadcasting signal from CVBS in a broadcasting signal receiver. And the separated emergency broadcasting signal is decoded to emergency broadcasting control information and outputs the decoded information to controller. The emergency broadcasting signal separation and processing unit generates a caption processing signal from the decoded emergency broadcasting control information, and outputs to video signal processing unit. The controller controls an overall operation of a TV system based on a control program data stored in a storage unit. If the pre-registered information is detected from the decoded emergency broadcasting control information, the controller turns on a TV system or switches a TV system operation mode to watching mode, and controls an emergency broadcasting channel is outputted on a TV channel.

Description

TV information automatic detection and display system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television system that is a broadcast signal receiver, and more particularly to an alarm broadcasting television system for propagating alarm broadcasting and an alarm broadcasting propagation method in the system.

Currently, there is a voice notification system that uses a telephone or a mobile phone to notify a general household about a disaster situation. However, such a system is ineffective because it takes a long time to propagate. In order to overcome the limitation of the voice notification system is an automatic alarm broadcasting system through a TV.

The present invention provides a television system capable of distributing alarm broadcasts to homes in the event of a disaster or disaster and a method of disseminating alarm broadcasts in the system.

It is still another object of the present invention to provide a television system capable of inducing viewing of an alarm broadcast even when the power of the television system is turned off and an alarm broadcast propagation method in the system.

It is still another object of the present invention to provide an alarm broadcasting television system and an alarm broadcasting propagation method in the system, which can quickly propagate disaster broadcasting to viewers watching a video played back from a video reproducing apparatus such as a VCR.

Alarm broadcast propagation method according to an embodiment of the present invention for achieving the above object,

Receiving a broadcast signal or data;

Detecting an alarm broadcast signal or data superimposed or inserted in the received broadcast signal or data;

When the registered information is detected from the detected alarm broadcast signal or data, turning on the main power of the system.

Even when the television system is turned off, the television system is "on" depending on whether or not the alarm broadcast is received, so that the residents of the disaster area receive the alarm broadcast in subtitles or breaking news through the automatically operated television. It will be possible.

On the other hand, a television system according to another embodiment of the present invention,

An alarm broadcast signal or data separation and processing unit for separating the alarm broadcast signal or data superimposed or inserted in the received broadcast signal or data, and decoding the alarm broadcast signal or data into alarm broadcast control information;

When the registered information (alarm broadcasting start signal or data) is detected in the alarm broadcasting signal or data, the broadcasting signal or data of the predetermined alarm broadcasting channel is turned on by turning on the main power of the television system or switching the system operation mode to the TV viewing mode. And a control unit for controlling the system to output an AV signal.

The controller selects a channel of the broadcast signal receiver so that a broadcast signal of a predetermined broadcast alarm broadcast channel is received in a power standby mode and a video playback mode.

Therefore, in the present invention, if the alarm broadcast is transmitted through a predetermined channel even while watching a video played from an external device such as a VCR, the system controls the system so that the alarm broadcast received through the broadcast signal receiver is displayed. Viewers will be able to see the alarm broadcasts in subtitles or breaking news.

In order for alarm broadcasting through television, broadcasting station signal or data which has been promised in advance should be transmitted from broadcasting station. In this way, the alarm broadcast signal or data to be transmitted from the broadcast station are television system control codes for alarm broadcast, and are encoded by an encoder and superimposed or inserted in the VBI (Vertical Blanking Interval) section of the broadcast signal. 1 illustrates a television system control codes for alarm broadcasting.

In FIG. 1, television alarm broadcast start information indicates the start of television alarm broadcast. By detecting the alarm broadcast start information, it is possible to detect that the alarm broadcast is being propagated. The alarm broadcast transmission time information indicates the broadcast time of the alarm broadcast, and the broadcast time information indicates the current time information (RTC). It is compared and used for system on / off. The alarm broadcast duration information indicates the duration of the alarm broadcast. The information indicating the number of alarm broadcast receiving areas indicates the number of propagation areas of the alarm broadcast. The n reception area information is the area information to which the alarm broadcast should be propagated. If any one of the information and its own area information stored in the system coincide, the n area information is detected to control the television system.

The alarm broadcast receiving group information is information for identifying the police, military, public officials, and the like, and may be used to propagate various types of information by using the receiving group information as well as alarm broadcasting. The subtitle start information of the alarm broadcast indicates the subtitle start of the alarm broadcast. Subsequent to the subtitle start information of the alarm broadcast, there are alarm broadcast subtitle content information, information for indicating the end of the alarm broadcast subtitle, and information for indicating the end of the alarm broadcast.

A test code can be inserted between the alarm broadcast start information and the alarm broadcast transmission time information. This test code is a control code for testing in advance so that the television system can be normally controlled at the time of alarm broadcast propagation. The test code may include a TV on code, test code transmission time information, group recognition code information, genre recognition code information, area recognition code information, TV off code information, and the like. When the television system receives such a test code, the system control unit stores it in the internal memory and, when a new code is received, updates the stored code with the newly received code.

In the method of using the stored test code, when the TV on command is received by the user command, the control unit turns on the TV by using the stored TV on code and adjusts the TV volume by test. After switching to the pre-arranged alarm broadcasting channel, the user returns to the previous channel and displays the stored signal or data transmission time, group identification code, reception rate, etc. in OSD form. Such a test operation may be programmed to be performed only once after receiving and storing a test code, or may be programmed to be performed periodically.

On the other hand, a genre recognition code for indicating the genre of the broadcast signal propagated such as breaking news, news, and soap opera can be additionally inserted into the control codes.

2 is a block diagram of a television system for alarm broadcasting.

In FIG. 2, the broadcast signal receiving unit 10 receives the tuned broadcast signal under the control of the control unit 70 and outputs the composite video signal CVBS and the audio signal separately. The broadcast signal receiving unit 10 is already known. As shown, a general tuner and IF processing unit are included.

The video signal processor 20 processes the composite video signal CVBS separated by the broadcast signal receiver 10 into a video signal component RGB that can be displayed on a display device, and outputs the mixed video signal by mixing it with a caption processing signal. Reference numeral 20 shows a Y / C separation unit for separating a composite video signal into Y and C signals, a chroma signal processing unit for converting the separated Y / C signals into RGB signals, and a video signal mixing for mixing subtitle processing signals. Contains wealth.

The video signal output unit 30 serves to display the RGB signal output from the video signal processor 20. The video signal output unit 30 includes a CRT driver and a CRT.

The audio signal processor 40 processes and outputs the audio signal separated by the broadcast signal receiver 10 into a signal R / L output through a speaker. The audio signal processor 40 includes an amplifier at an output terminal. The amplifier amplifies the level of the output audible sound by adjusting the amplification level by the volume adjusting signal ① output from the control unit 70. An audio signal output unit 50, which is a speaker, is positioned at the rear end of the audio signal processing unit 40. As a result, the audio signal processor 40 converts the audio signal R / L separated from the channel into an audible sound and outputs the audible sound.

The remote control receiver 80 receives the remote control signal transmitted from the remote controller and transmits it to the controller 70.

The alarm broadcast signal separation and processing unit 60 separates the alarm broadcast signal from the composite video signal CVBS output from the broadcast signal receiving unit 10, decodes it into alarm broadcast control information, and outputs it to the control unit 70. The alarm broadcasting signal separation and processing unit 60 generates caption processing signals (captions R, G, and B) according to the caption alarm among the decoded alarm broadcasting control information and outputs them to the video signal processing unit 20.

The control unit 70 controls the overall operation of the television system based on the control program data stored in the storage unit 85. For example, the controller 70 may include information (eg, alarm broadcast start information, reception area information, reception group information, genre information, etc.) registered in advance in the storage unit 85 in the decoded alarm broadcast control information. If detected, it controls the system to turn on the system power or switch the system operation mode to the TV viewing mode so that the broadcast signal of the predetermined broadcast signal is output. When the alarm broadcast start information of the registered pattern is detected, the controller 70 may activate a speaker, a buzzer, a warning light, or other alarm means to propagate an alarm.

For reference, a user may input a code of a region where the user is located through a remote controller, and the region code is stored in the storage unit 85 and compared with the alarm broadcasting receiving region information. In addition, since the channel for each broadcasting station is different according to the region, the channel information of the broadcasting station that broadcasts the alarm broadcasting can also be input and stored by the user through the remote controller. Therefore, if the program in advance to receive the channel information of the broadcast station that propagates the alarm broadcast in the power standby state, so that the general public can access the alarm broadcast by making the TV "on" when the alarm broadcast.

The power supply unit 75 receives the AC power and processes the standby power and the main power for supplying the AC power to the system. The standby power means the minimum power required for the system wake-up.

3 is a flowchart illustrating an operation in a power standby mode.

The alarm broadcast propagation method in a television system having a single tuner can be largely divided into the operation in the power standby mode (main power off mode) and the operation in the main power on state. The premise is that the channel broadcasting for alarm broadcasting should be tuned in advance or each channel must be monitored in power standby mode.

Tuning the channel for transmitting the alarm broadcast or monitoring each channel, and waiting for the power standby mode, the control unit 70 of the television system whether the alarm broadcast start code is detected through the alarm broadcast signal separation and processing unit 60 Check (Step I).

The control unit 70 of the television system having the configuration of Fig. 2 will receive the alarm broadcast signal as shown in Fig. 1. The received alarm broadcast signal is separated and processed by the alarm broadcast signal separation and processing unit 60 to control it. As input to 70, the controller 70 detects the alarm broadcast start code and then receives subsequent alarm broadcast control (code) information (step II).

As a third step (III), the control unit 70 which receives the alarm broadcast control information compares whether the alarm broadcast transmission time information has a value within a tolerance range with the real time clock (RTC) of the television system. If the alarm broadcast transmission time information has a value within a tolerance range with the current time information of the television system, the control unit 70 has information that matches the area information registered in the storage unit 85 among the received alarm broadcast receiving area information. Check whether it is (Step IV).

If there is a region information matching the inspection result, the control unit 70 turns on the system main power (on step VI) so that the operating power is supplied to each part of the system in the standby state. In FIG. 3, the step (step V) of checking the power "on" state before the system main power is "on" is illustrated in the case where two tuners are provided as shown in FIG. 5. Either of the two tuners is a dedicated tuner for exclusively receiving alarm broadcasts. In a television system equipped with a dedicated tuner, either the tuned-up alarm channel is tuned in immediately or the power is turned on depending on whether the main power is on. The step of checking whether the main power supply is "on" is shown, since it is preferable to tune the contract channel after "turning on."

Assuming a system having a single tuner, the control unit 70 that has turned on the system main power (on step VI) is to raise the volume level immediately (step 이므로) because the alarm broadcast channel is already tuned. Outputs the volume adjustment signal (①).

As described above, after the TV is turned on by the control of the controller 70, the volume is adjusted upward, and the caption processing signal decoded and output by the alarm broadcasting signal separation and processing unit 60 is a video signal or a data processing unit 20. ) May be mixed with the original video signal and output.

In the above-described example, the case where the TV main power source is "on" when various pieces of information coincide with each other is described, but the TV main power source can be "on" even when the alarm broadcast start information is identical. This means that many variations are possible in the actual system design.

Although a description has been given on the assumption of a television system having only one tuner, that is, one broadcast signal receiver, various modifications are possible.

4 is a case where a television system having one tuner and a video reproducing apparatus such as a VCR is used in combination.

If an alarm broadcast is sent while watching a VCR, a method of distributing it to the viewer should be considered.

In FIG. 4, all configurations except for the video signal switching unit 90 and the audio signal switching unit 100 are the same as the system configuration shown in FIG.

The video signal switching unit 90 selects one of the video signal input through the video input terminal and the composite video signal CVBS output from the broadcast signal receiving unit 10 according to the switching signal output from the control unit 70. do.

The audio signal switching unit 100 also selectively outputs any one of an audio signal input from an external device through the audio input terminal and an audio signal separated from the broadcast signal receiving unit 10 under the control of the controller 70.

Therefore, when the video playback mode is selected, the control unit 70 controls the video signal switching unit 90 and the audio signal switching unit 100 so that an AV output of a signal reproduced from an external device such as a VCR is performed. When the viewing mode is selected, the switching units 90 and 100 are controlled such that the TV broadcast signal channel-tuned by the broadcasting signal receiving unit 10 is output through the audio signal output unit 50 and the video signal output unit 30.

If the video playback mode is selected, the controller 70 controls the switching units 90 and 100 to output a signal reproduced from the VCR through the speaker and the display device. The controller 70 broadcasts an alarm to receive an alarm broadcast. Tunes into a broadcast channel that broadcasts. According to this selection, the alarm broadcast signal separation and processing unit 60 receives a broadcast signal overlapping the alarm broadcast signal through the broadcast signal receiver 10.

On the other hand, the control unit 70 checks whether the alarm broadcast start information is detected through the alarm broadcast signal separation and processing unit 60, and when the alarm broadcast start information is detected, as shown in FIG. It checks whether the current time information has a value within the tolerance range, and sequentially checks whether the region information matching the previously stored region information exists in the received control information.

If the inspection result transmission time and the current time information of the system have a value within the tolerance range, and there is an alarm broadcasting reception area information that matches the stored area information, the control unit 70 switches the video playback mode to the TV viewing mode. That is, the video signal switching unit 90 and the audio signal switching unit 100 are controlled to output the video and audio signals output from the broadcast signal receiving unit 10.

Since the current tuner is tuned to the alarm broadcasting channel, the AV signal received through the alarm broadcasting channel is displayed and output, and the subtitles for notifying the alarm broadcasting are mixed and output by the video signal processing unit 20. Subtitles tell you that a disaster has occurred in the area where you are located. In this case, you can also adjust the volume automatically to a certain level. It can be programmed to switch back to video playback mode when the user commands it.

Fig. 5 shows a system having an exclusive tuner for alarm broadcasting.

Unlike the system illustrated in FIGS. 2 and 4, the system illustrated in FIG. 5 includes one additional broadcast signal receiver 10 and 15, and further includes a switching unit for switching audio and video signals. Have Other configurations are the same as those described in FIG.

In FIG. 5, first, the broadcast signal receiver 2 (15) is a receiver for exclusively receiving the alarm broadcast. The broadcast signal receiver 2 (15) includes a tuner and an IF processor, and is controlled by the channel controller 70. The broadcast signal receiver 2 (15) is pre-selected as a contract channel to receive only the alarm broadcast, and separates the broadcast signal into an audio signal and a composite video signal, respectively, and separates and processes the audio first switching unit 110 and the alarm broadcast signal. 60) and outputs to the video second switching unit 140.

Meanwhile, the audio first switching unit 110 selectively outputs any one of an audio signal input from an external device through the audio input terminal and an audio signal output from the broadcast signal receiving unit 2 15 under the control of the controller 70. The audio second switching unit 120 selectively outputs any one of an output signal of the audio first switching unit 110 and an audio signal separated from the broadcast signal receiving unit 1 (10) under the control of the control unit 70.

In the system illustrated in FIG. 5, one of an audio signal output from two broadcast signal receivers 10 and 15 and an audio signal input from an external source is selected under the control of the controller 70, and the audio signal processor 40 is selected. The signal is processed from and finally output through the audio signal output unit 50 as an audible sound.

Under the control of the video signal controller 70, one of a video signal output from two broadcast signal receivers 10 and 15 and a video signal input from an external source is selected, such as the flow of an audio signal. ) Is processed and finally output through CRT.

When the alarm broadcast propagation process in such a system is described, it can be classified into a propagation process at power off and a propagation process at power on.

The propagation process at power off can be seen by checking whether the alarm broadcast is received in the corresponding area through the broadcast signal receiver 2 (15) as described in FIG. As shown in FIG. 3, when there is a detection of television alarm broadcasting start information through the broadcast signal receiver 2 (15), and the transmission time information coincides with system time information, and the alarm broadcasting for a corresponding region, the controller 70 turns off the system power. On, and controls the switching unit (110, 120, 140) so that the broadcast signal received through the broadcast signal receiver 2 (15) AV output. Then, the subtitle signal of the alarm broadcast received through the broadcast signal receiver 2 (15) is processed into the R, G, B subtitle processing signal by the alarm broadcast signal separation and processing unit 60, and then the video signal processing unit 20 and the broadcast signal. It is mixed and output.

Even if a channel other than the alarm broadcast is received through the broadcast signal receiver 1 (10), if the alarm broadcast is propagating, the controller 70 alerts the broadcast signal through the broadcast signal receiver 2 (15) and the alarm broadcast signal separation and processing unit 60. Since it is possible to determine whether the broadcast and the real-time alarm broadcast for the region, it is possible to control the respective switching units (110, 120, 130, 140) to propagate the alarm broadcast propagated through the broadcast signal receiver 2 (15) to the viewer. .

Even if the viewer is watching other channels, the alarm broadcast tuner can quickly receive the alarm broadcast.

In FIG. 5, a plurality of video and audio switching units are respectively illustrated, but a single switching unit may be provided for video and audio, respectively, to output the final audio signal and the video signal to the post-processing unit.

Although embodiments of the present invention have been described with reference to analog color TV only, the present invention can be applied to digital television systems in a similar manner.

FIG. 6 is a block diagram of a television system for digital alarm broadcasting, and has only one tuner as shown in FIG. 2 and shows only a configuration for propagating alarm broadcasting in a power standby mode.

Referring to FIG. 6, the broadcast data receiver 200 includes a tuner and an IF processor. In the broadcast data receiver 200, the tuner inputs digital TV broadcast data received through an antenna, selects a channel under the control of the controller 280, and outputs IF data according to the tune. The IF processor then converts the IF data output from the tuner into baseband data and outputs the converted baseband data.

The channel processor 210 (or the channel decoder) 210 decodes the baseband data output from the IF processor and reproduces the data bit stream. The data bit stream for the image data input from an external device such as a camera or a VCR is reproduced. Do it.

The TS decoder 220 separates and outputs audio data, video data, and additional data from the data bit string reproduced by the channel processor 210. The audio data among the separated data is applied to the MPEG 2 audio decoder 260, decoded according to the MPEG standard, and then level-amplified and output from the amplifier 270.

The video data is applied to the MPEG2 video decoder 230 and decoded according to the MPEG standard, and applied to the OSG mixer (240) to be combined with OSG data generated under the control of the controller 280 to process the video data. The image is output on the screen through the image output unit 250, which is a water pipe. The OSG data is data for the controller 280 to display various information on the screen as a graphic or text.

The auxiliary data separated by the TS decoder 220 is applied to the controller 280. This auxiliary data is composed of control information as shown in FIG. 1 as alarm broadcast control information codes for the implementation of the present invention, and is processed and transmitted as information data (ancillary data) or digital closed captions at a broadcasting station.

The control unit 280 controls the overall operation of the digital television system. For example, the system starts the power of the system when detecting the alarm broadcast start information, the contracted area information, and the alarm broadcast transmission time of the decoded alarm broadcast control information. By switching the operation mode to the TV viewing mode, the system is controlled to output AV data of a predetermined broadcast broadcast channel. The memory 290 temporarily stores control program data for controlling the operation of the digital television system and data generated during the system control operation.

When the alarm broadcasting start code is detected through the TS decoder 220 (first step), the control unit 280 of the television system with standby power receives subsequent alarm broadcasting control (code) information (second step). Save it.

The control unit 280 of the third step checks whether the alarm broadcast transmission time information has a value within a tolerance range with the current time information (RTC) of the television system. If the alarm broadcast transmission time information has a value within the tolerance range with the current time information of the television system, the controller 280 checks whether the information corresponding to the memory information of the local area stored in the received alarm broadcast reception area information exists ( Step 4). If there is a region information matching the test result, the controller 280 automatically turns on the system power (on step 5) so that the operating power is supplied to each part of the system in the standby state. A volume adjustment signal is output so that the volume level is adjusted upward (step 5). This volume adjustment signal is output to the amplifier 270 to adjust the output level upward.

The alarm broadcast caption data information separated from the TS decoder 220 and input to the controller 280 may be output as OSG data and input to the OSG mixer 240.

FIG. 7 illustrates a system having a dedicated receiver 300 for alert broadcast reception. By providing the dedicated receiver 300, it is possible to continuously detect whether the alarm broadcast is being received. The operation of such a system may also be classified into a propagation process at power off and a propagation process at power on.

As described with reference to FIG. 6, the propagation process at power off may be determined by checking whether an alarm broadcast is received in a corresponding region through the dedicated broadcast data receiver 2 310. That is, when there is a detection of television alarm broadcasting start information through the broadcast data receiving unit 2 310, when the transmission time information matches the system time information, and the alarm broadcasting for the corresponding region, the controller 280 turns on the system power. The MPEG audio decoder and the video decoder 260 and 230 are controlled to output AV data through the broadcast signal receiver 2 310. The caption data of the alarm broadcast received through the broadcast data receiver 2 15 is controlled by an OSG mixer ( In step 240, it is mixed with broadcast data and output.

Even if the alarm signal is being transmitted through the broadcast signal receiver 1 (200), if the alarm broadcast is propagating, the controller 280 transmits the alarm broadcast through the broadcast signal receiver 2 (310) and the TS decoder 2 (330). And since it is possible to determine whether or not the real-time alarm broadcast for the region, it is possible to control the MPEG audio decoder and the video decoder (260,230) to propagate the alarm broadcast propagated through the broadcast data receiver 2 (310) to the viewer.

Even if you are watching a separate channel, you can receive alarm broadcasts quickly through the dedicated alarm broadcast tuner.

Digital broadcasting consists of a data stream, and the data is coded in a certain unit (for example, packet), and the data stream is divided and transmitted according to the code. Signal (alarm broadcasting signal) ① video ② audio ③ auxiliary signal (alarm broadcasting signal) ① video ② audio ③ auxiliary signal (alarm broadcasting signal) ① video ② audio ③ auxiliary signal (alarm broadcasting signal) of the channel. Even when the channel r is broadcasted and the disaster alarm is broadcasted in other channels while watching the channel r, it is possible to watch the alarm broadcast by changing the channel code from r to s at the broadcasting station. In other words, the channel is effective to change the channel if necessary.

If there is a customer db (data base) 140, such as data broadcasting or satellite broadcasting, a customer unique number 118 is assigned to each customer of the customer db 140, and an input means such as a customer unique number is provided in the control unit and the storage unit. Select a subset of the customer database from tv, which has a means of installing a smart card reader to be installed on or outside the TV, and an input means such as a customer unique number on the smart card, and corresponding to a subset of the customer database via the customer unique number. When the TV corresponding to the customer unique number of the subset is selected, the alarm broadcast start signal or the start data received by the decoder and control unit embedded in the tv can be detected.

Receive groups by region, group, or genre by subdividing the customer database by region, group, or genre according to the conditions, and tv corresponding to each customer unique number in the subset, which is the intersection or union of the subset. You can also distinguish

It is possible to maximize the alarm notification effect because it can induce the viewing of the alarm broadcast in the air even when the power of the television system is off (off).

The present invention also has the effect of quickly spreading the alarm broadcast to viewers watching the video played back from a video playback device such as a VCR, DVDP and the like.

Claims (1)

In the alarm broadcast propagation method in a television system, Receiving a broadcast signal or data; Detecting an alarm broadcast signal or data, which is superimposed or inserted in the received broadcast signal or data; When the registered information (eg, alarm broadcast start signal or data) is detected from the detected alarm broadcast signal or data, turning on the main power of the system; alarm broadcast propagation method comprising a.