JPS6267930A - Emergency alarm receiver - Google Patents

Abstract

PURPOSE:To confirm an operation by a test signal (or an end signal) by using the operation of an operation confirming switch so as to activate a display device or an acoustic generator and using a test signal so as to inactivate the display device or the acoustic generator thereby confirming the operation of the acoustic generator by the test signal or using the display device in common. CONSTITUTION:The display device 5 and the acoustic generator 6 are operated by the start signal 12 of an emergency alarm broadcast A and the end signal 14 inacitvates the display device 5 and the acoustic generator 6. When a receiver by the test broadcast is desired for confirmation and the operation confirmation switch 4 is turned on, the display device 5 and the acoustic generator 6 are activated at the same as the detection of the start signal by a detection circuit 3. In receiving the test broadcast 15, the detection circuit 3 detects the test signal to inactivate the acoustic generator 6 and the display device 5. The end signal offers the same operation as the test signal. Thus, the operation of the display operated when the emergency alarm is received is confirmed and it is used in common as the display of the test broadcast reception.

Description

DETAILED DESCRIPTION OF THE INVENTION To Industrial Application Field 2: The present invention relates to an emergency warning receiver that is compatible with broadcasting emergency warnings by television or radio broadcasting.

BACKGROUND OF THE INVENTION Emergency warning broadcasting for transmitting emergency information such as earthquakes and tsunamis has started. An example of the operation of a test signal or termination signal of a conventional emergency warning receiver will be described with reference to the drawings.

FIGS. 3 and 4 show block diagrams of conventional emergency warning receivers. In FIG. 3, 1 is an antenna, 2 is a tuner section, 3 is a detection circuit, 6 is an emergency warning broadcast reception indicator, 6 is a sound generator, and 9 is an indicator for receiving a test signal or final signal.

In the emergency warning broadcast, as shown in Fig. 6, if you want to broadcast emergency warning information while the conventional radio or television broadcast audio signal 11 is being performed, first, the conventional broadcast audio 11 is interrupted and a start signal is sent. 12 will be broadcast, followed by urgent warning information 13.
is broadcast, and a termination signal 14 is broadcast at the end. After that, the broadcast returns to the conventional audio 113. The period A in Figure 6 is called an emergency warning broadcast. The start and end signals are the mark signal (
It consists of an FSX (Frequency Shift Keying) signal that consists of a digital "1" signal) at 1024Hz and a space signal (digital ○" signal) at 640Hz, and the start signal and end signal are different signals. be.

The operation of the emergency warning receiver shown in FIG. 3 that corresponds to this broadcast will be explained. When the tuner section 2 is constantly receiving broadcasts,
When the emergency warning broadcast starts, a start signal is extracted from the output of the tuner section 2 and applied to the detection circuit 3. When this detection circuit 3 detects that it is a start signal, it operates the display 5 with the output of the detection circuit 3, and also operates the low frequency circuit in the sound generator 6, which had not been operated until now.
The output signal of the tuner section 2 is amplified by the low frequency circuit 7 and added to the speaker 8 to produce sound, allowing the user to listen to the emergency warning broadcast.

Next, when the end signal is detected by the detection circuit 3, the output of the detection circuit 3 deactivates the display 6 and changes the low frequency circuit 7 in the sound generator θ from the operational state to the non-operational state to return to the original standby state. Return to receiving state. That is, in this emergency warning receiver, even if they are not normally in operation, the display 6 and the sound generator 6 are activated only between the start signal and the end signal of the emergency warning broadcast, and the display 6 displays the emergency warning broadcast. You can display the information that the receiver is receiving and listen to the alert information from speaker 8.0 However, this emergency alert broadcast is not always broadcast, so you can check whether the receiver is operating normally. Test broadcasts are conducted periodically for emergency warning receivers. As shown in Figure 6, the test broadcast audio signal at this time is to interrupt the conventional broadcast audio 11, output the signal 16 "1-Announcing that the test broadcast is about to take place," and then broadcast the test signal 16. At the end, the signal 17 of "an announcement indicating that the current broadcast was a test broadcast" is broadcast, and the original conventional broadcast sound 11 is broadcast. This period B is called test broadcasting, and this test signal 16 is broadcasting the same signal as the end signal.

68- By detecting this test signal 16 with the detection circuit 3 and operating the display 9 for receiving the test broadcast for a certain period of time, it is possible to confirm that the receiver operates with the test signal and is normal.

Furthermore, the display 9 operates for a certain period of time even when the above-mentioned end signal is received, and the operation can be confirmed in the same way as in the test broadcast.

FIG. 4 shows another conventional example in which a buzzer or the like is used as the sound generator 6, which operates between the start signal and the end signal.

Problems to be Solved by the Invention However, with the above configuration, the operation of the sound generator cannot be confirmed by the test signal (or termination signal), and two indicators, 6 and 7, are required. It had

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides an emergency warning receiver that can confirm the operation and sound of a sound generator using a test signal of an emergency warning broadcast. The present invention also provides an emergency warning receiver that can also confirm operation by sharing the emergency warning broadcast reception display.

be.

Means for Solving the Problems In order to solve the above problems, the emergency warning receiver of the present invention, when a start signal is detected by the detection circuit, uses the output of the detection circuit to display a display for receiving emergency warning broadcasts or to generate sound. When the device is in the operating state from 1 to 1 and the end signal is detected by the detection circuit,
The output of this detection circuit causes the display device or the sound generator to become inactive and in a standby state, and
In the standby state, by operating the operation confirmation switch, the display or sound generator is operated in the same way as when the detection circuit detects a start signal, and when the test signal is detected by the detection circuit, the display or sound generator is activated. It is equipped with a configuration that makes the device inactive.

Effects The present invention has the above-described configuration so that the operation of the acoustic generator can be confirmed using a test signal, or the operation can be confirmed using a test signal (or end signal) by sharing a display.

Embodiment Hereinafter, an emergency warning 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 receiver according to a first embodiment of the present invention.

In Figure 1, 1 is an antenna, 2 is a tuner section, 3
4 is an operation confirmation switch, 5 is a display for receiving an emergency alert and for operation confirmation, 6 is a sound generator, 7 is a low frequency circuit, and 8 is a speaker.

Regarding the emergency warning receiver configured as above, the first
This will be explained using figures.

FIG. 1 shows the conventional example shown in FIG. 3 with an operation confirmation switch 4 added.
The display 9 is omitted. The display 6 and the sound generator 6 are activated by the start signal 12 for emergency warning broadcasting, and the display 5 and the sound generator 6 are deactivated by the end signal 14, which is the same operation as in the conventional example shown in FIG. do.

However, when it is desired to check the receiver by test broadcasting, turning on the operation check switch 4 puts the display 6 and the sound generator 6 into the operation state in the same way as when the detection circuit 3 detects the start signal. When the test broadcast 16 is received, the detection circuit 3 detects the test signal and makes the sound generator 6 and display 5 inactive. At this time, the end signal operates in the same way as the test signal.

As described above, according to this embodiment, the display 6 and the sound generator 6 are put into the operating state in the same way as when the detection circuit 3 detects the start signal by operating the operation confirmation switch Y switch 4, and the test signal 1
By disabling the sound generator 6 and the display 6 by 6, it is possible to confirm the volume of sound when the sound generator is in operation and the operation using the test signal. In addition, it is possible to check the operation of the display that operates when an emergency warning is received, and it can also be used as a display for test broadcast reception.

Next, a second embodiment of the present invention will be described with reference to a block diagram of an emergency warning receiver shown in FIG. FIG. 2 shows an example in which the sound generator 6 in FIG. 1 is used as a buzzer, and other operations are the same as those in FIG. 1.

The operation of the detection circuit 3 used in FIGS. 1 and 2 can be defined by software using one microcomputer.

On page 9, in Figures 1 and 2, both the display 6 and the sound generator 60 are operated at the same time, but when the emergency warning broadcast reception and test broadcast are notified only by light, the sound generator 6 is not present. Good too. On the other hand, it goes without saying that the display 6 may not be needed when the notification is made only by sound.

Effect of the invention As described above, the present invention relates to a tuner section and a detection circuit.

It has a display or sound generator for receiving the emergency warning broadcast, and when the detection circuit detects the start signal of the emergency warning broadcast, the display or sound generator is activated by the output of the detection circuit and an end signal is sent. When detected by the detection circuit, the display device or the sound generator is deactivated by the output of this detection circuit to enter a standby state, and the detection circuit is started by operating an operation confirmation switch while in the standby state. The test signal (or termination signal) is detected by activating the indicator or sound generator in the same manner as when a signal is detected, and by deactivating this indicator or sound generator by detecting the test signal in the detection circuit. ) From page 10, you can check the volume of the sound generator and its operation by sound, you can check the display operation of the emergency warning broadcast reception, and you can also check the operation by test signal (or end signal). This allows you to check the operation of the receiver.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an emergency warning receiver according to the first embodiment of the present invention, FIG. 2 is a block diagram of the second embodiment, and FIGS. 3 and 4 are conventional emergency warning receivers. Pro 1. FIG. 6 is a waveform diagram of the audio signal of the emergency warning broadcast, and FIG. 6 is a waveform diagram of the audio signal of the test broadcast. 1...Antenna, 2...Tuner section, 3
...Detection circuit, 4...Operation confirmation switch, 5
...Display device, 6..Sound generator, a. Low frequency circuit, 8..Speaker. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
--Antenna? ---Teenar Kidedo 1--Acoustic Helmet Number 7-11 Maintenance Decay 8-11 Speeder Otsu, 5' Fig. 2 IZ 6 r/, 3 Fig. 3 Fig. 4

Claims (1)

[Claims] It has at least a tuner section for receiving an emergency warning broadcast, a detection circuit, and a display or a sound generator for receiving the emergency warning broadcast, and when the start signal of the emergency warning broadcast is detected by the detection circuit, the output of the detection circuit causes the When the display device or the sound generator is put into an operating state and an end signal is detected by the detection circuit, the display device or the sound generator is operated to be inactive and put into a standby state by the output of the detection circuit, and In the standby state, by operating the operation confirmation switch, the display or sound generator is operated in the same way as when the detection circuit detects a start signal, and when the test signal is detected by the detection circuit, the display or sound generator is activated. An emergency warning receiver characterized in that a generator is made inoperative.