JPS62249580A - Television specific signal detecting device - Google Patents

Abstract

PURPOSE:To automatically record a quick news report by extracting frequency forming a warning chime tone to detect the start of the quick news report. CONSTITUTION:A TV broadcasting signal supplied from an antenna input terminal 101 to a TV part 100 reaches a video amplifier 106 through a tuner 102 or the like. A part of the output of the amplifier 106 is inputted to a sound detector 110 and a sound signal is extracted from the video signal and supplied to a detector 200. The detector 200 extracts a specific frequency band having high intensity and previously specified out of the frequency components forming the warning chime from the sound signal. When the previously set number of the extracted signals is counted at the time interval within a previously set allowable range in a previously set period, the start of the quick news report is decided and a start signal is outputted to an external recording device starting part 400. Thus, the quick news report can be recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a so-called broadcasting system in which during television broadcasting, information to be immediately announced by subtitles is superimposed on a general broadcast program following a continuous warning chime sound. The present invention relates to a device that detects breaking news, issues an alarm, and activates a recording device.

[Conventional technology]

In the event of a large-scale disaster, accident, or other serious social incident, telecommunications networks may be overwhelmed with emergency calls, calls, etc., resulting in congestion. Therefore, in the event of a large-scale disaster or accident, the party managing the network must quickly collect information, consider whether or not it will affect the network, and establish a system to maximize the communication of emergency contact calls. I need to hurry.

Conventionally, in cases where network equipment failures do not occur due to disasters, accidents, etc., the opportunity for discovering such business is television, television, etc.
In many cases, "breaking news" on the radio etc. is the first report.

However, TVs etc. are not always in reception mode, and even if they are always in reception mode, if there is no one near the receiver, it is difficult to discover breaking news even if there is news. It's impossible. Furthermore, it is not realistic for humans to constantly monitor television receivers in order to discover breaking news that may be broadcast at any time.

Furthermore, even if someone happens to discover breaking news, it is difficult to reconfirm the content because the broadcast is temporary.
There was also a drawback.

By the way, the ``Emergency Warning Broadcasting System'' is a well-known type of broadcast similar to so-called ``News Breaking'' ([
“Ministerial Ordinance Amending Part of the Enforcement Regulations of the Radio Law”, June 1985
As will be described in detail below, the purpose (effect) of the breaking news covered by the present invention is
, the system configuration is also significantly different.

(1) Purpose (Effect) Emergency warning broadcasts are used to (7) when a warning declaration is issued pursuant to the provisions of the Large-Scale Earthquake Countermeasures Act, and (a) when a tsunami warning is issued pursuant to the provisions of the Meteorological Services Act. (b) This system is used to quickly disseminate information to special receiving terminals only when broadcasting is required pursuant to the provisions of the Disaster Countermeasures Basic Act. General news of social significance is not covered, so the range of information that can be collected from ``breaking news'' is much wider.

(11) System configuration When performing the above-mentioned emergency warning broadcast, the television broadcasting station first issues an emergency warning signal on general broadcast radio waves. The emergency warning signal is modulated by a frequency deviation method, and has a mark (indicating l) frequency and a space (indicating 0) frequency, and is determined by the combination of each code of / and 0. It is composed of digital codes.

There are two types of emergency warning signals: a start signal and an end signal, but both signals include recognition codes such as area classification codes, January/day classification codes, etc., and the emergency broadcast receiving equipment is The equipped receiving terminal receives the start signal, and when the various codes match the codes preset in the terminal, it automatically turns on the power switch, receives the broadcast content, and after broadcasting, receives the end signal sent. The power switch is automatically turned off as soon as the signal is received.

In other words, an emergency warning broadcast is a system designed to be automatically received by a receiver (To#), and in particular, a warning signal using a special digital code is sent beforehand and after the event. The system configuration differs greatly from the ``Nice Bulletin,'' which broadcasts the breaking news after repeatedly hitting an analog waveform warning chime sound superimposed on the general broadcast audio to the point where it is noticeable. In other words, the "Nice Bulletin" was not designed in advance to be automatically detected by a machine, and attempting to automatically detect it would be technically difficult, so conventionally such automatic detection devices were not available. It had not been realized.

[Problem to be Solved by the Invention 1] As described above, it has conventionally been difficult to automatically detect breaking news during television broadcasts.

The present invention was devised in view of the above points, and is a device that automatically detects the start of breaking news from broadcasting television, issues a warning, and automatically starts a recording device. is intended to provide.

[Means and effects for solving the problem] The present invention detects breaking news during television broadcasting by extracting the continuous warning chime sound, amplifies the warning message by a voice synthesizer, and also outputs a warning lamp. It flashes to alert the operator, and also automatically activates an external recording device to record the contents of the breaking news.

In particular, when extracting the warning chime sound, first, a pre-specified specific frequency signal having a high intensity among the frequency components constituting the warning chime sound is extracted, and the extracted signal is generated within a preset time. 22- only if you input the preset number at the time interval within the allowed range.
The accuracy of detection has been increased to determine that the breaking news has started.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

FIG. 3 shows a first embodiment of the present invention.

The apparatus according to this embodiment can be roughly divided into a television section 100, a detection section 200, an alarm section 300, and an external recording device activation section≠0.
0, external TV activation control section 200, testing section Otsu 00. It consists of

The TV 1 broadcast signal from the external antenna is sent from the antenna input terminal 10/ to the channel 102 in the TV unit 1OO.
guided by. Channel selection in Chenahar is set by a channel selection switch 103. The signal output after passing through the chainer is sent to the video intermediate frequency amplifier io≠ and the video detector 103.
A part of the signal output from the video amplifier passes through the video output circuit 107 and the monitor control section 10r, and drives the internal video monitor 10r.

A part of the signal output of the video amplifier IOT is sent to the audio detector IIO.
The audio signal is extracted from the video signal and output to the detector 200. Note that a part of the output from the audio detector 110 passes through the audio amplifier /// and the monitor control section 101 to drive the internal monitor speaker //2.

When the audio signal output from the audio detector/10 is input to the detection unit 200, as will be detailed later, it detects a specific frequency from the audio signal and shapes the waveform into a pulse. If a preset number of pieces is counted within a preset time, at a preset allowable time interval, and a preset number is counted, the alarm unit 30 determines that the breaking news has started and sends a start signal to the alarm unit 30.
0, external recording device startup part≠00. It is output to the external TV activation control section 200.

When the alarm announcement control unit 30/ receives the activation signal, it activates and controls the speech synthesizer 130.2, and outputs a message (for example, "This is breaking news") stored in the ROM in the speech synthesizer as an audio signal. Generate composite output. The number of repeated messages and the intermittent time between messages are controlled by the alarm announcement control section. Furthermore, message transmission stops when the system reset button 303 is pressed. A portion of the audio signal output from the audio synthesizer 302 directly drives the internal speaker 30≠, and a portion of the audio signal passes through the audio amplifier 30J- to drive the external speaker 306.

When the alarm lamp control unit 307 receives the activation signal, the internal alarm lamp SOt and the external alarm lamp 30 blink until the system reset button 303 is pressed.

The external recording device startup section ≠ 00 is connected to the power-on control section in the external recording device ≠ 01 by a signal line ≠ 0.2, and the external recording device ≠ oi is connected by a signal line ≠ 0.2 to the recording startup control section in the external recording device ≠ oi. 4403, respectively, are connected in advance. Upon receiving the activation signal, the external recording device activation unit 1AOO first outputs a power-on command to the external recording device≠01 through the signal line 02, and waits for a preset time to elapse from the output of the power-on command. After that, a recording start command is output to the external recording device 4LO/ through the signal line≠03. The reason why a time difference is provided in advance between the two commands is to ensure a warm-up time between the external recording devices, and normally several hundred milliseconds is sufficient for this time.

When the external TV activation control unit 200 receives the activation signal, the power line! A commercial power supply is connected to the external television 102 through 0/.

When the system reset button 303 is pressed, commercial power is cut off.

Note that the testing section 600 will be explained in detail later.

FIG. 2 is a diagram illustrating the detection section 200 and the test section 600 in detail. The audio output from the audio detector iio in the television section is first input to the audio amplifier 20/ of the detection section. This is because the warning chime sound that accompanies breaking news generally has a low level, and since it is difficult to detect, it is necessary to raise the level. The audio signal amplified by the amplifier 201 is input to the specific frequency extraction section 20.2. The extraction section extracts and outputs only a signal (analog waveform) of a pre-designated specific frequency having a high intensity among the frequency components constituting the warning chime sound.

The output analog signal is input to the waveform shaping section 203. The waveform shaping section 203 converts the analog waveform signal into a digital waveform (rectangular wave) using a so-called Schmitt circuit.
Shape it into a signal and output it.

When the shaped signal pulse is the first signal after resetting the system, the rising edge of the signal pulse is used as a trigger to generate the reference pulse generator 204c and the counter reset timer 2o! is started.

The reference pulse generator OIA captures the first rise of the pulse output from the waveform shaping section after the system reset, and receives a reset signal from the counter reset timer OJ- from the time of the rise. Until then,
It continues to output pulses to the comparator 20 & at preset time intervals Ti. In this case, the width of the l pulses is approximately the same as the width of the pulse output from the waveform shaping section o3,
Further, the interval Ti between pulses is also set in advance to be approximately the same as the pulse interval output from the waveform shaping section 203.

The counter reset timer 20j starts counting from the rising edge of the first pulse output from the waveform shaping section after the system reset, and the pulse number setting switch 20j
When the allowable time corresponding to the number of pulses set by 7 has elapsed, the reset signal is sent to the reference pulse generator 20≠
and output to the start signal output section aortc. Also, timer 20 for counter reset! is also reset by the reset signal output from itself. By the way, the actual situation of the warning chime sound is that it rings μ times at an interval of about 1 second, then pauses for about 2 seconds, and then sounds again φ at an interval of about 1 second.
Rings twice. Therefore, if you want to hurry the detection, you can judge whether it is breaking news by only hitting the first μ times in a row, or if you want to ensure the detection, by hitting a total of r times in the first half and the second half, including the pause in between. good. Therefore, the allowable time corresponding to the above-mentioned set pulse number is (i) When set to 1A pulse, from the rising point of the pulse signal corresponding to the l-th chime sound to the rising point of the μ-th pulse signal If you set the time to the actual measurement time up to the time required to output the start signal (described later), and set it to (II) r pulse, the rise of the pulse signal corresponding to the l-th chime sound will be What is necessary is to set a time that is the sum of the actually measured time from the point 2 to the time υ when the r-th pulse signal rises, including the rest time in the middle, plus the time required to output a starting signal, which will be described later.

Now, the pulse signal output from the waveform shaping section 203 is
The comparison unit 20B is reached via the compensation time provision unit 210, but for convenience of explanation, we will first assume a case where there is no compensation time provision unit 210, and the comparison unit 20! , the subsequent signal processing will be explained.

In the comparison section 206, in order to prevent malfunctions due to noise with irregular appearance intervals, the output pulse train from the waveform shaping section 203 is combined with a reference pulse generation section having a pulse interval Ti equal to the interval between successive hits of the chime. 20≠ and the pulse train outputted from the pulse train.

The pulse train outputted after the logical product has completely failed in the comparator 2θ6 is inputted into a pulse number counter 20 times. For pulse number counter 20, timer 2 for counter reset
0! When the number of input pulses reaches the number of pulses set by the pulse setting switch 207 within the time from
Output N signal.

Upon receiving the ON signal, the activation signal output section 201 starts outputting the activation signal, and the counter reset timer 20
The output is stopped when the reset signal from 3 is received.

Therefore, when setting the allowable time according to the number of pulses set in the counter reset timer, it is necessary to add the minimum required output duration as the activation signal.

By the way, in the ideal case where the input pulse signal corresponding to the warning chime sound is equal to the pulse interval as shown in FIG. By performing a logical product on the comparison section θ6 (indicated as B in FIG. 3a), a number of pulses equal to the number of input signals (≠ in FIG. 3a) can be obtained as output.

However, as shown by A' in Figure 3, the pulse interval of the input pulse signal corresponding to the warning chime sound is approximately 1 second as described above, but when measured in more detail, it is found that Compared to the interval between the first stroke (or the !th stroke and the 6th stroke), the distance between the λ stroke and the 3rd stroke (or the 6th stroke and the 7th stroke), or the 3rd stroke and the Hiroshi stroke (or the 7th stroke and the 7th stroke) The interval between the rth stroke) tends to become shorter. When we perform an AND with such an actual input signal and a regular reference pulse (indicated by B in Figure 3) with a pulse interval of Ti, some input signals are detected (the third In the figure, the @l stroke and the λth stroke are detected), and other input signals are not detected (in the figure, the 3rd stroke and the μth stroke are not detected).

In order to solve the above-mentioned drawbacks, the present invention provides a waveform shaping section 2.
03 and comparison section 206. A compensation time provision section 210 is provided between the two. Also, a compensation time provision timer 2/1 is prepared. The compensation time provision timer 2// is triggered by the fall of the signal pulse outputted from the waveform shaping section 203, and has a width of a preset time Tc every time the signal pulse is outputted. The compensation time providing section 210 outputs the pulse having the width Tc after the signal pulse output from the waveform shaping section 203, and outputs the pulse having the width Tc to the comparator section 210. As shown in FIG. 3C, after giving a compensation time Tc to the actual input signal where the pulse interval is not uniform, if the comparator 204 performs an AND with the reference pulse, then It is possible to detect all pulse signals corresponding to the input actual warning chime sound.

In FIGS. 1 and 2, OOO is a test section that tests the detection operation of the detection section OOO. boi is an audio input terminal, and 602 is a test mode setting switch.

When performing a test, first press the test mode setting switch 6.
02 is turned ON, a recording tape on which only the warning chime sound is recorded in advance is played back by an external tape recorder, and the played audio signal is inputted from the audio input terminal 1.0/. However, when playing the recording tape externally, the output level is adjusted to the same low level as when the warning chime sound is actually played repeatedly in the TV audio signal. The input reproduced audio signal is superimposed on the television broadcast audio signal output from the audio detector tio in the television section in the mixing section 1.03, and is output to the detection section. As a test method, in addition to the method using an external tape recorder as described above, there is also a method using an internal tape recorder, or a method in which the warning chime sound is stored in advance in an internal or external ROM and an audio signal is generated from it during the test. There are also ways to do this. In FIG. 2, tOIA is an example of an audio test signal generation section in which the ROM has a built-in audio test signal generation function. The audio test signal output from the signal generator 60 using the ROM is adjusted to be equal to the level of the actual warning chime sound by the level controller 6θ6.

607 is a level meter used for re-adjusting the level. If you turn on the test mode setting switch 60♂i,
The audio test signal output from the level controller is superimposed in the mixer 1.03 on the television broadcast audio signal output from the audio detector/10 in the television section and output to the detection section.

FIG. μ shows a second embodiment according to the present invention. In this embodiment, in addition to the breaking news detection section 200 described above, an emergency warning broadcast detection section 2!0 and an activation signal output control section 7θθ are provided. In addition, in this embodiment, the same television section as in the first embodiment,
Detailed descriptions of the trial piece section, IF report section, etc. are omitted.

The activation signal output control unit 700 performs controls such as changing the content of the warning announcement depending on whether the detection result is breaking news or an emergency warning broadcast, changing the type of the warning lamp, or changing the way it flashes. . It goes without saying that the test section not only stores the warning chime sound described in the first embodiment, but also stores signals associated with emergency warning broadcasts.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to accurately and automatically detect breaking news on television broadcasts, issue an alarm, and automatically record the contents of the breaking news.

Therefore, even if the handler is absent or taking a nap, a wide range of information such as accidents, disasters, and social news can be provided at an early stage.
The information can be collected reliably, and a system to deal with it can be established at an early stage.

[Brief explanation of drawings]

FIG. 1 shows a first embodiment according to the invention. Figure 2 shows
FIG. 2 is a diagram illustrating in detail a detection section and a test section in the first embodiment shown in FIG. 1. FIG. FIG. 3 is a diagram explaining the principle and effect of providing compensation time. FIG. φ shows a second embodiment according to the present invention. 100...TV section, λθO...detection section, 300...
...Alarm section, ≠00...External sickle drawing device activation section, 200
...External TV start control section, too...Test section, 1
0/...antenna input terminal, IO2...chainer,
103...Channel selection switch, 10IA...
Video intermediate frequency amplifier, 10J-...Video detector, 10
1. ...Video amplifier, 107...Video output circuit, 1
01...Monitor control unit, lθri...internal video monitor, l10...audio detector, lll...audio amplifier, l12...internal monitor speaker, 201...audio amplifier, 202...・Specific frequency extraction unit, 203...
Waveform shaping section, 201A...Reference pulse generation section, 20J
-...Counter reset timer, 206...Comparison section, 207...Pulse number setting switch, -Or...
Start signal output section, 20...Pulse number counter, 21
0...Compensation time provision unit, Coll...Compensation time provision timer, 2J-0...Emergency warning broadcast detection unit, 301...
- Alarm announcement control unit 1.302...Speech synthesizer, 303...System reset button, 30≠...Internal speaker, JOJ-...Audio amplifier, 306...External speaker, 307... Alarm lamp control unit, 301r
...Internal alarm lamp, 30ri...External alarm run''
:j, IAO/...external recording device, IAO2...signal line, ≠03...signal line, jol...power line, yoO
-...External TV, lsO/...Audio input terminal, 6
0.2...Test mode setting switch, l03...Mixing section, 60≠...Audio test signal generation section, tOS...
Signal generator using ROM, 60 level controller,
607... Repel meter, to! r...Test mode setting switch, 700...Start signal output control section.

Claims (1)

[Scope of Claims] (1) A device for detecting so-called breaking news, in which information to be reported is superimposed on a general broadcast program during a television broadcast, followed by a warning chime sound that is repeatedly hit, and then superimposed with subtitles. A pre-specified specific frequency signal having a high intensity among the frequency components constituting the warning chime sound is extracted from the television audio signal, and the extracted signal is transmitted within a pre-set time for a pre-set allowable time. A television specific signal detection device characterized in that when counting a preset number at intervals, it determines that the breaking news has started and outputs a start signal. (2) During television broadcasting, a so-called breaking news is detected, in which information to be reported is superimposed on the general broadcast program using subtitles following a continuous warning chime sound, and an alarm is issued and the recording device is activated. (a) Extracts from a television audio signal a pre-specified specific frequency signal with a high intensity among the frequency components constituting the warning chime sound, and the extracted signal is activated for a pre-set time (b) a detection unit that determines that the breaking news has started and outputs a start signal when counting a preset number at a preset allowable time interval;
) an alarm unit that issues an alarm based on the activation signal; (c) an external recording device based on the activation signal;
1. A television specific signal detection device, comprising: a recording activation section that outputs a recording activation signal. (8) During television broadcasting, a so-called news bulletin is detected, in which information to be reported is superimposed on a general broadcast program using subtitles following a continuous warning chime sound, and an alarm is issued and a recording device is activated. (a) Extracts from a television audio signal a pre-specified specific frequency signal with a high intensity among the frequency components constituting the warning chime sound, and the extracted signal is activated for a pre-set time (b) a detection unit that determines that the breaking news has started and outputs an activation signal when counting a preset number at a preset allowable time interval; and (b) outputs an alarm based on the activation signal. (c) to an external recording device based on the activation signal;
(d) a test section that superimposes the same audio signal as the warning chime sound on the audio signal of general television broadcasting and inputs it to the detection section to perform a test. A television specific signal detection device characterized by: