JPS6318730A - Reception equipment - Google Patents

Abstract

PURPOSE:To dinstinguish emergent alarm information from a news or weather forecast by activating a generator with a delay of prescribed time in detecting a 2nd start signal rather than the detection of a 1st start signal. CONSTITUTION:When a signal '010100' of the 1st start signal to broadcast emergency alarm as a start signal 12 by a signal discrimination circuit 31 in a signal detection circuit 3 is detected four times, an output signal is extracted at a terminal 1 to activate a low-frequency amplifier 7 in a low-frequency circuit 6 and to activate a display device 4. On the other hand, when a signal a '001101' of the 2nd start signal to broadcast other news or weather forecast as the start signal 12 by the signal discrimination circuit 31 in the signal detection circuit 3 is detected four times, an output signal is extracted at a terminal B to activate the display device 5, the signal is fed to a timer circuit 32, which outputs a signal after a prescribed time to activate the low-frequency circuit 6. Thus, the reception equipment is operated immediately only when the emergent broadcast is received thereby listening to the broadcast start tone.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a receiver for receiving television or radio broadcasts.

BACKGROUND OF THE INVENTION Emergency warning broadcasts using radio broadcasts and television broadcasts have begun to transmit emergency information such as earthquakes and tsunamis.

An example of a conventional receiver for receiving emergency warning broadcasting will be described below with reference to the drawings.

FIG. 3 shows a block diagram of a conventional receiver for receiving emergency warning broadcasts. In the figure, 1 is an antenna, 2 is a tuner section, 3 is a signal detection circuit,
4 is a display, 6 is a low frequency circuit, 7 is a low frequency amplifier, and 8 is a speaker.

The operation of the receiver configured as described above will be explained below.

As shown in Fig. 4 (2L), when an emergency warning broadcast is to be broadcast while the conventional radio or television broadcast audio signal 11 is being broadcast, first the conventional broadcast audio signal 11 is broadcast. 11 is interrupted, a start signal 12 is broadcast, then urgent warning information 13 is broadcast, and finally an end signal 14 is broadcast. After that, the broadcast returns to the conventional audio 11, and this period for the person shown in Figure 4 is called an emergency warning broadcast.

The start signal 12 and end signal 14 at this time are mark signals (
It consists of an FSK (Frequency Shift Key Ink) signal consisting of a digital "1" signal), a 12° space signal (digital "Q" signal), and a 640[1z] start signal 12 and an end signal. 14 is a different signal.

The operation of the emergency warning receiver shown in FIG. 3 that corresponds to this broadcast will be explained. The tuner part 2 always receives broadcasts, and when an emergency warning broadcast starts, a start signal 12 is extracted from the output of the tuner part 2 and applied to the signal detection circuit 3. In this signal detection circuit 3, when the start signal 12 is detected, the output of the signal detection circuit 3 is used to drive the low frequency amplifier 7 in the low frequency circuit e.
is operated, the output signal of the china part 2 is amplified by the low frequency amplifier 7 in the low frequency circuit θ, and a sound is generated in addition to the speaker 8, so that emergency warning information can be heard.

At this time, if the start signal 12 uses the signal "ololoo" 15 times, when the signal detection circuit 3 detects this start signal rol 0100J 'i 4 times, the low frequency circuit 7 is activated by the output of the signal detection circuit 3. I have to. That is, during period D in FIG. 4, the signal detection circuit 3 detects the start signal 12 "010100J'i" four times, and during period E, the remaining signals of the start signal are detected as "Piro Piro..."
This sound is sounded by the speaker in the low frequency circuit 6, and acts like a bell as an alarm.

Next, when the end signal (a signal different from the start signal) 14 is detected by the signal detection circuit 3, the low frequency amplifier 7 in the low frequency circuit e is deactivated by the output of the signal detection circuit 3, and the original standby state is returned. Return to. At this time, the period F is the period for detecting the termination signal, and therefore the low frequency amplifier 7 operates during the period A' in ('b) of FIG. 4. In addition, the display 4 operates upon detection of the start signal 12 and the end signal 1.
4 makes it inactive.

By the way, in the above explanation, non-emergency alerts are issued by a person using the start signal 12, alarm information 13, and end signal 14, but in the same way, broadcasting can be started by sending a start signal. It is being done. That is, in addition to emergency warning broadcasts, such as news flashes, weather forecasts, etc., a predetermined broadcast is performed after a start signal is played as a program identification signal.

The start signal is, for example, "use 001101J 10 times,
When made into audio, it makes a sound like "piro piro...j".Here, the start signal for the emergency warning broadcast is the first start signal, and the start signal for other news etc. is the second start signal. Use as a start signal.

Problems to be Solved by the Invention However, with the above configuration, the original purpose was to receive an emergency warning, and for that purpose, after detecting this in the preceding stage of the start signal, the remaining signals of the start signal are used to receive an emergency warning. A bell-like broadcast start sound is activated, which is a warning of "Piro piro...", but the same can be done by the start signal emitted when broadcasting news or weather forecasts other than the above emergency warnings. "Pilopiro...
. . .", which caused the problem that it could be misheard as the above-mentioned emergency warning broadcast.

In view of the above-mentioned problems, the present invention does not operate the receiver until the start signal is finished broadcasting when receiving broadcast contents other than emergency broadcasts, and operates immediately after detecting the start signal only when receiving all emergency broadcasts. To provide a receiver in which the broadcast start sound can be heard using the remaining signal of the start signal.

Means for Solving the Problems In order to solve the above problems, the receiver of the present invention has a tuner part for receiving broadcasts, a signal detection circuit, and a sound generating device, and the signal detection circuit has a first starting point. signal and a second start signal for broadcasting other news, weather forecasts, etc., and the output of this signal detection circuit controls the sound so that the second start signal is higher than when the first start signal is detected. The configuration is such that the audio signal is controlled a certain period of time later when a start signal is detected.

Operation The present invention has the above-described configuration, and the first
Using the start signal and the second start signal used for other Nice etc., when receiving an emergency warning broadcast, the remaining signal of the first start signal is used to make a "piro piro..." sound. When the second start signal used for other news, etc. is fully received, it will not make any sound until the second start signal is finished.

Embodiment Hereinafter, a receiver according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of an emergency warning broadcast receiver according to an embodiment of the present invention.

In FIG. 1, 1 is an antenna, 2 is a tuner section, 3 is a signal detection circuit, 4.5 is a display, 6 is a low frequency circuit, 7 is a low frequency amplifier, 8 is a speaker, 31 is a signal discrimination circuit, 3
2 is a timer circuit.

Regarding the emergency warning broadcast receiver configured as above,
The operation will be explained below using FIG. 2 showing the timing chart.

(&) (b) in Figure 2 is (a-) in Figure 4
This is the same content as (b), with the addition of (C) in FIG. Start signal 12 in Figure 2 (2L)
The first start signal for broadcasting an emergency warning and the second start signal for broadcasting other information such as Nice and weather forecasts are all displayed, but the two start signals use different signals. For example, in the first start signal [ololooJ is 15
times, and the second start signal is ``001101''.
It is assumed that υ is repeated 0 times.

Further, the emergency warning information 13 in FIG. 2 is when the first start signal is received, and the information 3 when the second start signal is received includes information such as Nice and the weather forecast.

The tuner part 2 of the emergency warning broadcast receiver of the present invention shown in FIG. 1 always receives broadcasts, and when the first or second start signal 12 is broadcast, the output of the tuner part 2 starts. signal 1
2 is taken out and added to the signal detection circuit 3. When the signal detection circuit 3 detects the start signal 12, the output of the signal detection circuit 3 operates the low frequency amplifier 7 in the low frequency circuit 6, amplifies the output of the channel 2, and adds it to the speaker 8. to make a sound.

At this time, when the signal discriminating circuit 31 in the signal detection circuit 3 detects the first start signal "01°100" as the start signal 12 four times, the output signal is taken out to the terminal 1 and the output signal is output to the low frequency circuit 6. The low frequency amplifier 7 is operated, and the display 4 is also operated.

The period of detecting the "01o100" signal of the first start signal four times and outputting the signal to the output (a) is D in (b) of Figure 2, and the period of E is the remainder of the first start signal. At the signal, a "piropiro..." sound is sounded, and then emergency warning information 13 is sounded.

On the other hand, when the signal discrimination circuit 31 in the signal detection circuit 3 detects the second start signal "0011o1" as the start signal 12 four times, the output signal is taken out to the terminal (b) and the display 6 is operated. In addition to the timer circuit 32 (which may also be a signal delay circuit), the timer circuit 32 outputs a signal after a certain period of time to operate the low frequency circuit 6. At this time, the period in which the second start signal "001101j signal is detected four times and output is in progress" is H in FIG. This is the period during which the signal is output.The period of H and G is set to be longer than the time for broadcasting the second start signal "oollol" ten times. For this reason, when the second start signal is detected by the signal detection circuit 3, the start signal is not emitted.

Next, when the end signal 14 (the same signal for either the first or second start signal) is detected by the signal detection circuit 3, the display 4 or 5 is made inactive by the output of the signal detection circuit 3, and The low-frequency amplifier 7 in the low-frequency circuit 6 is made inactive, and the original standby state is restored. After detecting the end signal 14 at this time, the low frequency amplifier 7 and the indicator 4 or 5
The period until non-operation is the period F in FIG. 2(b) or (e).

As described above, according to this embodiment, the signal detection circuit 3
The start signal and the second start signal are detected, and the audio signal is controlled by the output of this signal detection circuit 3. The timer circuit 32 can control the audio signal to be delayed by a certain period of time.

Note that the timer circuit shown in FIG. 1 may be replaced by any other circuit as long as it delays the signal output by a certain period of time, and the low frequency circuit 6 may be replaced by a sound generator such as a buzzer. be.

Furthermore, in the embodiment, the signal detection circuit 3 has been described as one that detects the first start signal for identifying emergency warning broadcasts and the second start signal for identifying programs such as news and weather forecasts. The detection circuit may be such as to detect a first start signal for a nice program and a second start signal for a music program. In other words, in the case of a broadcast that starts with the first start signal, a broadcast start sound such as [piropiro...] is reported following the first start signal, and in the case of a broadcast that starts with the second start signal, In this case, the broadcast start sound is not reported following the second start signal.

Effects of the Invention As described above, according to the present invention, when the second start signal is detected than when the first start signal is detected,
By making the sound generator operate after a certain period of time, it can be used to sound the start signal to call attention when receiving emergency warning information, but it can also be used to alert people when receiving emergency warning information. This is a very effective invention, since it is possible to suppress the sound of the start signal during a forecast to distinguish it from emergency warning information and avoid surprises.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a receiver in an embodiment of the present invention, FIG. 2 is a time chart explaining the operation of FIG. 1, and FIG. 3 is a block diagram of a conventional receiver.
FIG. 4 is a time chart explaining the operation of FIG. 3. 2...Tuner part, 3...Signal detection circuit, 6...Low frequency circuit, 7...Low frequency amplifier, 8... -Speaker, 31...signal discrimination circuit, 32...timer circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A tuner unit that receives broadcasts, and a signal detection circuit that detects different arbitrary first and second start signals for identifying urgent broadcasts, specific programs, etc. included in the signal output from the tuner unit. control means for controlling a sound generating device for notifying a signal output from the tuner section based on a control signal output from the signal detection circuit, the control means including a control signal output from the signal detection circuit; is the first
A receiver characterized in that the operation of the sound generator is controlled a certain period of time later when a second start signal is detected than when the second start signal is detected.