JP5814810B2 - Notification broadcast receiver - Google Patents

Description

  The present invention relates to a notification broadcast receiver that receives notification broadcasts.

  Notification broadcasting systems for performing various types of notification broadcasting from a center to a plurality of dwelling units are widespread. This notification broadcasting system is generally configured by connecting a center device arranged on the center side and a receiver installed in each dwelling unit via a transmission line such as CATV. When the local event is held or the general broadcast such as FM radio broadcast or the emergency broadcast when a disaster such as a fire or an earthquake occurs, the center device transmits a notification broadcast signal via the transmission line. The receiver receives the broadcast signal and outputs the announcement broadcast with a speaker (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-8753

  Here, the receiver in the above-described conventional notification broadcasting system has room for improvement in order to save energy. Specifically, in this receiver, power is constantly supplied to all the components provided in the receiver. For this reason, for example, even when a power failure occurs, power is supplied to all of the above components, so that there is a problem that the standby time of a backup power source (for example, a battery) provided in the receiver is shortened. It was.

  The present invention has been made in view of the above, and an object of the present invention is to provide a notification broadcast receiver that can reduce power consumption.

In order to solve the above-described problems and achieve the object, the notification broadcast receiver according to claim 1 receives the notification broadcast signal through the transmission line , and receives and broadcasts the radio broadcast signal. A notification broadcast receiver for performing predetermined processing including reception processing and output processing on the notification broadcast signal, wherein the notification broadcast signal and the radio broadcast signal are input to the first input means. An announcement broadcast system including: a radio broadcast system that performs predetermined processing including reception processing and output processing on the radio broadcast signal, the radio broadcast system including second input means to which the radio broadcast signal is input; A sound output means for outputting sound, and the notification broadcast signal input to the first input means and received by the notification broadcast system, or the notification broadcast system or the radio broadcast system On the basis of a predetermined operation, and switching means for selectively switching respect one of the announcement broadcast system or the radio broadcast system said voice output means, the plurality of components of at least a portion included in the announcement broadcast systems Power cutoff control means for performing power cutoff control for shutting off the power, wherein whether or not a predetermined condition for performing the power cutoff control is satisfied is input to the first input means and transmitted in the notification broadcasting system It received the announcement broadcast signal, or determined on the basis of a predetermined operation regarding the announcement broadcast systems, e Bei and a power cutoff control means for the power-off control when the predetermined condition is satisfied, the first When the notification broadcast receiver is unable to broadcast based on the notification broadcast signal input to the input means and received by the notification broadcast system, the power shut-off control means As satisfied, the radio broadcast system is controlled to perform the power shut-off control, and the radio broadcast system is broadcasted based on the radio broadcast signal input to the second input means and received by the radio broadcast system. The switching means is controlled to switch to the output means.

The notification broadcast receiver according to claim 2 is the notification broadcast receiver according to claim 1 , wherein only the power of the radio broadcast system is turned on, only the power of the notification broadcast system is turned on, or the notification broadcast receiver is set. Power supply switching means for switching on the power of the broadcast system and the radio broadcast system, and the power cutoff control means is configured to switch the power supply when only the power of the radio broadcast system is switched on by the power supply switching means. Blocking control is performed, and when only the power of the notification broadcasting system is switched ON by the power switching unit, the power of at least some of the plurality of components included in the radio broadcasting system is blocked.

The notification broadcast receiver according to claim 3 is the notification broadcast receiver according to claim 1 , wherein the notification broadcast system is a part of a plurality of parts included in the notification broadcast system, The power cutoff control means has a level measuring means for measuring the level of the notification broadcast signal on the upper side of the part that is the target of the power cutoff control, and the power cutoff control means is measured by the level measuring means. When the level of the notification broadcast signal falls below a predetermined value, the power cutoff control is performed.

Further, the notification broadcast receiver according to claim 4 is the notification broadcast receiver according to claim 2 , wherein the notification broadcast system is a part of a plurality of parts included in the notification broadcast system, Level measuring means for measuring the level of the notification broadcast signal on the upper stage side than the part to be subjected to power cutoff control by the power cutoff control means, and display means for displaying the reception status of the notification broadcast signal, The power cutoff control means has a level of the notification broadcast signal measured by the level measurement means equal to or higher than a predetermined value when only the power of the radio broadcast system is switched ON by the power switching means. In such a case, the display means displays that the notification broadcast signal is being received.

The notification broadcast receiver according to claim 5 is the notification broadcast receiver according to claim 1 , wherein the notification broadcast system is a part of a plurality of parts included in the notification broadcast system, The power cutoff control means has electric field strength measuring means for measuring the electric field strength of the notification broadcast signal on a lower stage side than a component to be subject to power cutoff control, and the power cutoff control means is the electric field strength measuring means. When the measured electric field strength of the notification broadcast signal is lower than a predetermined value, the power shut-off control is intermittently performed, and the power of the component subject to the power shut-off control is intermittently performed by the power shut-off control means. When the electric field intensity of the notification broadcast signal measured by the electric field intensity measuring means exceeds a predetermined value, the power supply of the component subject to the power interruption control is To return to the ON state.

The notification broadcast receiver according to claim 6 is the notification broadcast receiver according to claim 1 , wherein the notification broadcast system is configured to determine whether the notification broadcast receiver and the transmission line are connected. The power cutoff control means performs the power cutoff control when the detection means detects that the notification broadcast receiver and the transmission line are not connected.

According to the notification broadcast receiver according to claim 1, whether or not the predetermined condition for performing the power-off control is satisfied is determined based on the notification broadcast signal received by the notification broadcast system or the predetermined notification broadcast system. Since the power cut-off control means for performing the power cut-off control when the predetermined condition is satisfied is determined based on the operation, the power cut-off control is automatically performed according to the predetermined operation related to the notification broadcast signal or the notification broadcast system. The power consumption can be reduced compared to the case where power is constantly supplied to a plurality of parts included in the notification broadcasting system. In particular, the standby time of the backup power source of the notification broadcast receiver can be extended by performing the power shutoff control at the time of a power failure.
In addition, based on a notification broadcast signal received by the notification broadcast system or a predetermined operation related to the notification broadcast system or the radio broadcast system, either the notification broadcast system or the radio broadcast system is selectively selected for the audio output means. Switching means to automatically switch notification broadcast system or radio broadcast system according to notification broadcast signal or predetermined operation related to notification broadcast system or radio broadcast system, improving usability Can be made.

According to the notification broadcast receiver of the second aspect , the power cut-off control means performs the power cut-off control when only the power of the radio broadcast system is turned on by the power switch means, and the power switch means When only the power supply of the notification broadcast system is switched on, the power supply of at least a part of a plurality of parts included in the radio broadcast system is cut off. It is possible to shut off at least a part of power of a plurality of parts included or at least a part of power of a plurality of parts included in a radio broadcasting system, and perform power cut-off control according to user needs.

In addition, according to the notification broadcast receiver of claim 3 , the notification broadcast system includes a level measurement unit that measures the level of the notification broadcast signal on the upper side of the part that is the target of the power cutoff control by the power cutoff control unit. The power cutoff control means performs the power cutoff control when the level of the notification broadcast signal measured by the level measurement means falls below a predetermined value, so that the notification broadcast measured by the level measurement means The power shut-off control can be automatically performed according to the signal level, and the power consumption can be effectively reduced. Moreover, since the level measurement of the notification broadcast signal by the level measurement means can be continued, when the level of the notification broadcast signal measured by the level measurement means exceeds a predetermined value, the power supply of the parts subject to power shutdown control Can be returned to the ON state. Therefore, there is no need to provide a special part for returning the power supply of the part that is the target of the power shutdown control, so that the manufacturing cost can be reduced.

According to the notification broadcast receiver of claim 4 , the power cutoff control means is measured by the level measurement means when only the power of the radio broadcast system is switched ON by the power switching means. When the level of the notification broadcast signal exceeds a predetermined value, the display means displays that the notification broadcast signal is being received. Therefore, when only the power of the radio broadcast system is turned on, It is possible to indicate that the notification broadcast signal is received, and it is possible to prevent an emergency broadcast or the like from being missed.

According to the notification broadcast receiver of claim 5 , the notification broadcast system is configured to measure the electric field strength of the notification broadcast signal on the lower side of the part that is the target of the power cutoff control by the power cutoff control means. The power cutoff control means intermittently performs the power cutoff control when the electric field strength of the notification broadcast signal measured by the electric field strength measurement means falls below a predetermined value. The power shut-off control can be automatically performed according to the electric field strength, and the power consumption can be effectively reduced.
In addition, when the power supply of the parts subject to the power shutoff control is intermittently shut off by the power shutoff control means, the electric field strength of the notification broadcast signal measured by the electric field strength measuring means becomes a predetermined value or more. In this case, since the power supply of the part subject to the power shutoff control is returned to the ON state, the power supply of the part subject to the power shutoff control is turned on while continuing the measurement of the electric field strength of the notification broadcast signal by the electric field strength measuring means. Without providing a special part for returning, it is possible to return the power source of the part to be subjected to the power shutoff control, and to reduce the manufacturing cost.

Further, according to the notification broadcast receiver of claim 6 , the power cutoff control means performs the power cutoff control when the detection means detects that the notification broadcast receiver and the transmission line are not connected. The power cutoff control can be automatically performed according to the detection result of the detection means, and the power consumption can be effectively reduced while the transmission line is removed from the notification broadcast receiver.

It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 1. FIG. It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 2. FIG. It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 3. FIG. It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 4. FIG. It is a block diagram which shows the structure of the notification broadcasting system which concerns on Embodiment 5. FIG.

  Hereinafter, embodiments of a notification broadcast receiver according to the present invention will be described in detail with reference to the accompanying drawings. First, the configuration of the notification broadcast receiver will be described, then the operation of the notification broadcast receiver will be described, and finally, modifications to the embodiments will be described. However, the present invention is not limited by these embodiments. In addition, although the installation target and application target of the notification broadcast receiver according to each embodiment are arbitrary, the following description will be given by taking as an example the case of application to a notification broadcast receiver installed indoors in a dwelling unit.

[Embodiment 1]
First, the first embodiment will be described. This form is a form in which the power-off control is performed based on the measurement result of the electric field strength measuring means.

(Constitution)
First, the configuration of the notification broadcast receiver will be described. FIG. 1 is a block diagram showing a configuration of a notification broadcast receiver according to the first embodiment. As shown in FIG. 1, the notification broadcast receiver 1 includes a notification broadcast system 10, a radio broadcast system 20, switching units 30 a and 30 b, a speaker 40, an operation unit 50, and a control unit 60. .

(Configuration-Notification broadcasting system)
The notification broadcast system 10 is a broadcast system that performs predetermined processing including reception processing and output processing on the notification broadcast signal. As shown in FIG. 1, the announcement broadcasting system 10 includes an input terminal 11, a bandpass filter (hereinafter referred to as BPF) 12, amplifiers 13 a and 13 b, an automatic gain circuit (hereinafter referred to as AGC) 14, a mixer 15, The oscillator 16 and the detector (hereinafter referred to as DET) 17 are connected as shown in the figure.

The input terminal 11 is an input means for receiving an input of an announcement broadcast signal and a radio broadcast signal received via a transmission line (not shown).
The BPF 12 is a filtering unit that outputs only a signal in a predetermined band among the notification broadcast signal and the radio broadcast signal input to the input terminal 11.
The amplifier 13a is an amplifying unit that amplifies the signal output from the BPF 12.
The AGC 14 is an automatic gain adjustment unit that performs automatic gain adjustment of the signal amplified by the amplifier 13a.
The amplifier 13b is an amplifying unit that amplifies the signal whose gain has been adjusted by the AGC 14.
The mixer 15 converts the signal amplified by the amplifier 13b into a predetermined intermediate frequency signal that can be easily processed. The mixer 15 receives the notification broadcast signal and the transmission signal from the oscillator 16, and receives the intermediate frequency of the difference frequency. Generate a signal.
The oscillator 16 controls a reference oscillation frequency using an oscillator (not shown).
The DET 17 is an electric field strength measuring unit that measures the electric field strength (for example, RSSI (Received Signal Strength Indicator) level) of the intermediate frequency signal generated by the mixer 15, and is the lowest stage among the components included in the notification broadcasting system 10. On the side.

(Configuration-Radio broadcasting system)
The radio broadcast system 20 is a broadcast system that performs predetermined processing including reception processing and output processing on radio broadcast signals. As shown in FIG. 1, the radio broadcast system 20 is configured by connecting an input terminal 21, a BPF 22, and an FM tuner 23 as shown.

The input terminal 21 is input means for receiving an input of a radio broadcast signal such as FM radio received from an antenna (not shown).
The BPF 22 is a filtering unit that outputs only a signal in a predetermined band among radio broadcast signals input to the input terminal 21.
The FM tuner 23 is a tuning circuit for selecting a signal having a predetermined frequency from the signal output from the BPF 22 or the signal amplified by the amplifier 13a.

(Configuration-switching part)
The switching units 30a and 30b are switching means for selectively switching either one of the notification broadcast system 10 or the radio broadcast system 20 with respect to a speaker 40 described later.
Specifically, as shown in FIG. 1, the switching unit 30 a is provided below the amplifier 13 a and the BPF 22 and above the FM tuner 23, and the intermediate frequency signal measured by the DET 17 is displayed. Based on the electric field strength, either the amplifier 13a or the BPF 22 is selectively switched with respect to the FM tuner 23.
The switching unit 30b is provided below the DET 17 and the FM tuner 23 and above the speaker 40 described later, and the electric field strength of the intermediate frequency signal measured by the DET 17 or the operation unit 50 described later. Based on the predetermined operation, either one of the DET 17 and the FM tuner 23 is selectively switched with respect to the speaker 40 described later.
From the above, by the switching operation of the switching units 30a and 30b, either the intermediate frequency signal output from the DET 17 or the signal of the predetermined frequency output from the FM tuner 23 is selectively output to the speaker 40. Can be made.

(Configuration-Speaker)
The speaker 40 is a sound output unit that outputs various sounds based on the control of the control unit 60 described later. The specific output mode of the sound output from the speaker 40 is arbitrary. For example, when an emergency broadcast is included in the notification broadcast signal, the type and volume of the sound may be changed (specifically For example, when performing an emergency broadcast, the speaker 40 outputs the emergency broadcast at a maximum volume so as to surely notify the user of the emergency broadcast).
As shown in FIG. 1, an amplifier 41 for amplifying an intermediate frequency signal output from the DET 17 or a signal of a predetermined frequency output from the FM tuner 23 is provided in the front stage of the speaker 40.

(Configuration-operation unit)
The operation unit 50 is an operation unit that receives an operation input by a user. The specific configuration of the operation unit 50 is arbitrary. For example, the operation unit 50 can be configured using a push button, a rotation operation unit, or a remote operation unit such as a remote controller.

(Configuration-control unit)
The control unit 60 is a control unit that controls each unit of the notification broadcast receiver 1. Specifically, the control unit 60 includes a CPU (for example, a microcomputer) and various programs that are interpreted and executed on the CPU (a basic control program such as an OS, And a computer configured to include an internal memory such as a RAM for storing programs and various control data.

  Further, as shown in FIG. 1, the control unit 60 is configured to include a power shut-off control unit 61 in terms of functional concept. The power cut-off control unit 61 is a power cut-off control unit that performs power cut-off control that cuts off the power of at least some of the plurality of components included in the notification broadcast system 10. Here, “at least a part of a plurality of parts included in the notification broadcast system” is a part of a plurality of parts included in the notification broadcast system 10, and is a target of power shutdown control by the power shutdown controller 61. Specifically, in the first embodiment, the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the DET 17 are applicable. The details of the control executed by the power cutoff control unit 61 will be described later.

(Broadcast receiver operation)
Next, the operation of the notification broadcast receiver 1 configured as described above will be described. The operation of the notification broadcast receiver 1 includes three operations: an operation for performing an announcement broadcast when an announcement broadcast can be performed, an operation for performing a radio broadcast when an announcement broadcast is possible, and an operation when an announcement broadcast cannot be performed. I can take it. In this notification broadcast receiver 1, a notification broadcast signal and a radio broadcast signal are always input from the input terminal 11 via a transmission line (not shown), and a radio broadcast signal is input from the input terminal 21. Further, when the notification broadcast receiver 1 is turned on, all components included in the notification broadcast receiver 1 are turned on.

(Operation of notification broadcasting receiver-operation of performing notification broadcasting when notification broadcasting is possible)
First, the operation of performing notification broadcasting when notification broadcasting is possible will be described.
First, when the user performs an operation of switching to the notification broadcast using the operation unit 50 after the notification broadcast receiver 1 is turned on, the switching unit 30a connects the amplifier 13a and the FM tuner 23, and the switching unit 30b. By this, the DET 17 and the speaker 40 are connected.
Next, the announcement broadcast signal inputted to the input terminal 11 is outputted only by a signal of a predetermined band by the BPF 12, amplified by the amplifier 13a, and then gain-adjusted by the AGC.
Next, the gain-adjusted signal is amplified by the amplifier 13b, converted to an intermediate frequency signal by the mixer 15, and output to the DET 17.
Subsequently, the intermediate frequency signal output from the DET 17 is amplified by the amplifier 41 and output by the speaker 40.

In this operation, the notification broadcast signal input to the input terminal 11 is detected by the DET 17. The detected signal is output toward the control unit 60.
Here, the power cutoff control unit 61 monitors the electromagnetic strength of the signal detected by the DET 17, and if the electromagnetic strength of the signal detected by the DET 17 is equal to or greater than a predetermined value, the notification broadcast reception is performed. Since the machine 1 can perform the announcement broadcast, the power supply of all parts included in the announcement broadcast receiver 1 is maintained in the ON state.

(Operation of notification broadcast receiver-operation of performing radio broadcast when notification broadcast is possible)
Next, the operation of performing radio broadcasting when notification broadcasting is possible will be described.
First, after the notification broadcast receiver 1 is turned on, when the user performs an operation of switching to radio broadcasting using the operation unit 50, the switching unit 30a connects the amplifier 13a and the FM tuner 23, and the switching unit 30b. Thus, the FM tuner 23 and the speaker 40 are connected.
Next, the radio broadcast signal input to the input terminal 11 is output only in a predetermined band by the BPF 12, and is amplified by the amplifier 13a.
Subsequently, after the FM tuner 23 selects only a signal having a predetermined frequency among the amplified signals, the signal having the selected predetermined frequency is amplified by the amplifier 41 and output by the speaker 40. .

  Further, in this operation, the electromagnetic intensity is monitored by the power cut-off control unit 61 in the same manner as described in the operation of performing the notification broadcast when the notification broadcast can be performed, and all components included in the notification broadcast receiver 1 are performed. Is maintained in the ON state.

(Operation of notification broadcasting receiver-Operation when notification broadcasting is not possible)
Finally, the operation when notification broadcasting cannot be performed will be described. This operation is performed when the user performs an operation of switching to notification broadcast (or radio broadcast) using the operation unit 50 after the notification broadcast receiver 1 is turned on, so that the switching unit 30a and the amplifier 13a are switched. This operation is applied when the FM tuner 23 is connected and the DET 17 (or the FM tuner 23 in the case of radio broadcasting) and the speaker 40 are connected by the switching unit 30b.

In this operation, when the notification broadcast receiver 1 is turned on, the electromagnetic intensity is monitored by the power cut-off control unit 61 in the same manner as described in the operation of performing the notification broadcast when the notification broadcast is possible.
Here, when the electromagnetic intensity of the signal detected by the DET 17 is lower than a predetermined value, the notification broadcast receiver 1 cannot perform the notification broadcast, so the power consumption of the notification broadcast receiver 1 is reduced, In addition, in order to be able to monitor the electromagnetic intensity of the signal detected by the DET 17, the power cutoff control unit 61 intermittently shuts off the power sources of the amplifiers 13a, 13b, AGC 14, oscillator 16, and DET 17 (for example, Intermittently cuts every 1 msec). Along with this, the power cutoff control unit 61 connects the BPF 22 to the FM tuner 23 by the switching unit 30a and connects the FM tuner 23 to the speaker 40 by the switching unit 30b.
Next, the radio broadcast signal input to the input terminal 21 is output only by a BPF 22 in a predetermined band.
Subsequently, after the FM tuner 23 selects only a signal having a predetermined frequency among the signals in the predetermined band, the signal having the selected predetermined frequency is amplified by the amplifier 41 and output by the speaker 40.

Thereafter, when the power of the amplifiers 13a, 13b, AGC 14, oscillator 16, and DET 17 is intermittently cut off, and the electric field strength of the signal detected when the power of the DET 17 is ON is greater than or equal to a predetermined value. Since the notification broadcast receiver 1 can perform the notification broadcast, the power cutoff control unit 61 returns the power supplies of the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the DET 17 to the ON state. Accordingly, in order to shift the operation of the notification broadcast receiver 1 to the operation of performing the notification broadcast when the notification broadcast can be performed, the power cutoff control unit 61 causes the switching unit 30a to switch the amplifier 13a to the FM tuner 23. And the DET 17 is connected to the speaker 40 by the switching unit 30b.
Next, the announcement broadcast signal inputted to the input terminal 11 is outputted only by a signal of a predetermined band by the BPF 12, amplified by the amplifier 13a, and then gain-adjusted by the AGC.
Next, the gain-adjusted signal is amplified by the amplifier 13b, converted to an intermediate frequency signal by the mixer 15, and output to the DET 17.
Subsequently, the intermediate frequency signal output from the DET 17 is amplified by the amplifier 41 and output by the speaker 40.

(effect)
As described above, according to the first embodiment, whether or not the predetermined condition for performing the power-off control is satisfied is determined based on the notification broadcast signal received by the notification broadcast system 10, and the predetermined condition is determined. Since the power cut-off control unit 61 that performs the power cut-off control when satisfied is provided, the power cut-off control can be automatically performed according to the notification broadcast signal, and a plurality of components included in the notification broadcast system 10 can be performed. Power consumption can be reduced compared to the case where power is constantly supplied. In particular, by performing power-off control during a power failure, it is possible to lengthen the standby time of a backup power source (specifically, a dry battery or the like) of the notification broadcast receiver 1 (not shown).

  In addition, since the broadcast broadcast system 10 includes switching units 30a and 30b that selectively switch either the broadcast broadcast system 10 or the radio broadcast system 20 to the speaker 40 based on the broadcast notification signal received by the broadcast notification system 10. The notification broadcast system 10 or the radio broadcast system 20 can be automatically switched according to the notification broadcast signal, and the usability can be improved.

The notification broadcasting system 10 has a DET 17 on the lower side of the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the mixer 15, and the power cutoff control unit 61 has a predetermined electric field strength of the signal detected by the DET 17. Since the power cutoff control is intermittently performed when the value is lower than the value, the power cutoff control can be automatically performed according to the electric field strength of the intermediate frequency signal, and the power consumption can be effectively reduced. .
Also, when the power supply of the amplifiers 13a, 13b, AGC 14, oscillator 16, and DET 17 is intermittently cut off by the power cut-off control unit 61, the electric field strength of the intermediate frequency signal detected by the DET 17 is a predetermined value or more. In this case, the amplifiers 13a, 13b, AGC 14, oscillator 16 and the power of the DET 17 are restored to the constantly supplied state. And the power supply of the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the DET 17 can be restored without providing a special part for restoring the power of the DET 17, and the manufacturing cost can be reduced.

[Embodiment 2]
Next, a second embodiment will be described. This form is a form which performs power-off control based on the detection result of a detection means. The structure not particularly described is the same as that of the first embodiment, and the components and operations substantially the same as those of the first embodiment are used in the first embodiment as necessary. The same reference numerals or names are assigned and the description thereof is omitted.

(Constitution)
FIG. 2 is a block diagram showing the configuration of the notification broadcast receiver according to the second embodiment. As shown in FIG. 2, the notification broadcast receiver 101 according to the second embodiment is configured by adding a detection unit 70 to the components of the notification broadcast receiver 1 of the first embodiment and omitting the DET 17. Has been.
Here, the switching unit 30a determines whether or not a detection result of the detection unit 70 (more specifically, whether or not a transmission line attachment or removal operation (not shown) has been performed on the notification broadcast receiver 101). Based on the detection result), either the amplifier 13a or the BPF 22 is selectively switched with respect to the FM tuner 23.
The switching unit 30b selectively switches either the DET 17 or the FM tuner 23 with respect to the speaker 40 based on the detection result of the detection unit 70 or a predetermined operation of the operation unit 50.

(Configuration-detection unit)
The detection unit 70 is detection means for detecting whether the notification broadcast receiver 101 and a transmission line (not shown) are in a connected state. For example, the connection structure between the notification broadcast receiver 101 and a transmission line (not shown) is configured by using the input terminal 11 provided in the notification broadcast receiver 101 as a pin jack, and a pin (not shown) at the end of the transmission line (not shown). When the jack terminal is provided, the detection unit 70 detects whether or not this pin jack terminal (not shown) is connected to the input terminal 11.

(Broadcast receiver operation)
Next, the operation of the notification broadcast receiver 101 configured as described above will be described.

(Operation of notification broadcasting receiver-operation of performing notification broadcasting when notification broadcasting is possible)
First, the operation of performing notification broadcasting when notification broadcasting is possible will be described.
In this operation, the notification broadcast receiver 101 uses the operation unit 50 after the notification broadcast receiver 101 is turned on, as described in the operation of performing the notification broadcast when the notification broadcast of the first embodiment is possible. When switching to broadcasting is performed, the amplifier 13a and the FM tuner 23 are connected by the switching unit 30a, and the amplifier 13b and the speaker 40 are connected by the switching unit 30b via the mixer 15. Thereby, the announcement broadcast signal input to the input terminal 11 is output by the speaker 40 via the mixer 15 and the amplifier 41.

In this operation, when the notification broadcast receiver 101 is turned on, the power shut-off control unit 61 determines whether or not a pin jack terminal (not shown) is connected to the input terminal 11 in the detection unit 70. Monitor.
Here, when the detection unit 70 detects that a pin jack terminal (not shown) is connected to the input terminal 11, the power shutoff control unit 61 includes all components included in the notification broadcast receiver 101. The power supply of is maintained in the ON state.

(Operation of notification broadcast receiver-operation of performing radio broadcast when notification broadcast is possible)
Next, the operation of performing radio broadcasting when notification broadcasting is possible will be described.
In this operation, as described in the operation of performing the radio broadcast when the notification broadcast of the first embodiment is possible, after the notification broadcast receiver 101 is turned on, the user uses the operation unit 50 to perform the radio broadcast. When an operation for switching to broadcasting is performed, the amplifier 13a and the FM tuner 23 are connected by the switching unit 30a, and the FM tuner 23 and the speaker 40 are connected by the switching unit 30b. Thereby, the radio broadcast signal input to the input terminal 11 is output by the speaker 40 via the FM tuner 23.

  Further, in this operation, as described in the operation of performing the notification broadcast when the notification broadcast of the second embodiment is possible, the input terminal 11 is monitored by the power cutoff control unit 61 and the notification broadcast receiver 101 is monitored. Are maintained in the ON state.

(Operation of notification broadcasting receiver-Operation when notification broadcasting is not possible)
Finally, the operation when notification broadcasting cannot be performed will be described. Note that this operation is similar to the operation in the case where the notification broadcast in the first embodiment is not possible, and the user uses the operation unit 50 to perform the notification broadcast (or radio broadcast) after the notification broadcast receiver 101 is turned on. ), The switching unit 30a connects the amplifier 13a and the FM tuner 23, and the switching unit 30b connects the amplifier 13b, the mixer 15 (or FM tuner 23 in the case of radio broadcasting) and the speaker 40. This is the action that is applied when connected.

In this operation, when the notification broadcast receiver 101 is turned on, the input terminal 11 by the power cut-off control unit 61 is the same as described in the operation of performing the notification broadcast when the notification broadcast of the second embodiment is possible. Is monitored.
Here, when a detection line 70 detects that a pin jack terminal (not shown) is not connected to the input terminal 11 because the transmission line (not shown) is removed from the notification broadcast receiver 101 by the user. The power cutoff control unit 61 shuts off the power sources of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16. Accordingly, as described in the operation in the case where the announcement broadcasting of the first embodiment is not possible, the power shutoff control unit 61 connects the BPF 22 to the FM tuner 23 by the switching unit 30a, and The FM tuner 23 is connected to the speaker 40 by the switching unit 30b. As a result, the radio signal input to the input terminal 21 is output by the speaker 40 via the FM tuner 23.

  Thereafter, when a transmission line (not shown) is reattached to the notification broadcast receiver 101 by the user, and the detection unit 70 detects that a pin jack terminal (not shown) is connected to the input terminal 11, The power cutoff control unit 61 restores the power of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16 to the ON state. Accordingly, as described in the operation in the case where the notification broadcast of the first embodiment is not possible, the power shut-off control unit 61 connects the amplifier 13a to the FM tuner 23 by the switching unit 30a. Then, the amplifier 13b is connected to the speaker 40 via the mixer 15 by the switching unit 30b. Thereby, the notification broadcast signal input to the input terminal 11 is output by the speaker 40 via the amplifiers 13b and 41.

(effect)
As described above, according to the second embodiment, whether or not the predetermined condition for performing the power-off control is satisfied is determined based on the predetermined operation related to the notification broadcast system 10, and the power is supplied when the predetermined condition is satisfied. Since the power cut-off control unit 61 that performs the cut-off control is provided, the power cut-off control can be automatically performed in accordance with a predetermined operation related to the notification broadcast system 10, and power is supplied to a plurality of components included in the notification broadcast system 10. As compared with the case where is always supplied, power consumption can be reduced.

  Moreover, since the switching units 30a and 30b for selectively switching either the notification broadcast system 10 or the radio broadcast system 20 with respect to the speaker 40 based on a predetermined operation related to the notification broadcast system 10, the notification broadcast system 10 The notification broadcast system 10 or the radio broadcast system 20 can be automatically switched in accordance with a predetermined operation related to, and usability can be improved.

  The power cutoff control unit 61 performs power cutoff control when the detection unit 70 detects that the notification broadcast receiver 101 and the transmission line (not shown) are not connected, and accordingly, according to the detection result of the detection unit 70. Thus, the power cutoff control can be automatically performed, and the power consumption can be effectively reduced while the transmission line (not shown) is removed from the notification broadcast receiver 101.

[Embodiment 3]
Next, Embodiment 3 will be described. This form is a form in which the power cut-off control is performed based on the switching operation of the power switching means. The structure not particularly described is the same as that of the first embodiment, and the components and operations substantially the same as those of the first embodiment are used in the first embodiment as necessary. The same reference numerals or names are assigned and the description thereof is omitted.

(Constitution)
FIG. 3 is a block diagram showing the configuration of the notification broadcast receiver according to the third embodiment. As shown in FIG. 3, the notification broadcast receiver 201 according to the third embodiment further includes a power switch 51 in the operation unit 50 in addition to the components of the notification broadcast receiver 1 according to the first embodiment. Is omitted.
Here, the switching unit 30 a selectively switches either the amplifier 13 a or the BPF 22 with respect to the FM tuner 23 based on the switching operation of the power supply switching unit 51.
Further, the switching unit 30 b selectively switches either the mixer 15 or the FM tuner 23 with respect to the speaker 40 based on a switching operation of the power switching unit 51 or a predetermined operation of the operation unit 50.
In addition, the power shutoff control unit 61 performs power shutoff control for shutting off at least a part of power of a plurality of parts included in the notification broadcasting system 10 or at least a part of power of a plurality of parts included in the radio broadcasting system 20. Do. Note that “at least a part of a plurality of parts included in the radio broadcast system” is a part of a plurality of parts included in the radio broadcast system 20 and is subject to power-off control by the power-off control unit 61. This means a part, and specifically, in the third embodiment, the FM tuner 23 corresponds.

(Configuration-power supply switching unit)
The power supply switching unit 51 is a power supply switching unit that turns on only the power supply of the radio broadcast system 20, turns on only the power supply of the notification broadcast system 10, or turns on the power supply of the notification broadcast system 10 and the radio broadcast system 20.
Here, “switching only the power of the radio broadcast system ON” means that all the power supplies of the plurality of parts included in the radio broadcast system 20 are turned on, and at least a part of the plurality of parts included in the notification broadcast system 10. This means that the power source switching unit 51 is switched so that the power source is cut off. Specifically, in the third embodiment, the power supply of the FM tuner 23 is turned on, and the power supplies of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16 are cut off.
“Switching only the power supply of the notification broadcast system to ON” means that all the power supplies of a plurality of parts included in the notification broadcast system 10 are turned on and at least some of the plurality of parts included in the radio broadcast system 20 are turned on. This means that the power source switching unit 51 is switched so that the power source is shut off. Specifically, in the third embodiment, the power supply of the FM tuner 23 is cut off, and the power supplies of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16 are turned on.
“Switching the power of the notification broadcasting system and the radio broadcasting system to ON” means that the power switching unit is turned on so that all the power supplies of a plurality of parts included in the notification broadcasting system 10 and the radio broadcasting system 20 are turned on. This means that 51 is switched. Specifically, in the third embodiment, the power sources of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16, and the power source of the FM tuner 23 are turned on.

  Further, the specific configuration of the power supply switching unit 51 is arbitrary. For example, the power supply switching unit 51 is configured by using a push button type switch or a rotary operation type switch that can be switched to the above-described three stages. be able to.

(Broadcast receiver operation)
Next, the operation of the notification broadcast receiver 201 configured as described above will be described.

(Operation of notification broadcasting receiver-operation of performing notification broadcasting when notification broadcasting is possible)
First, the operation of performing notification broadcasting when notification broadcasting is possible will be described.
In this operation, when the user performs an operation to switch to the notification broadcast using the operation unit 50 after the notification broadcast receiver 201 is turned on, the power cutoff control unit 61 monitors the switching state of the power switching unit 51. To do.
Here, when the user's operation of the power supply switching unit 51 is switched so that “only the power supply of the notification broadcast system 10 is turned on”, the notification broadcast receiver 201 does not need to perform the radio broadcast. In order to reduce the power consumption of the radio broadcast system 20, the power cutoff control unit 61 shuts off the power of the FM tuner 23. Accordingly, the power cutoff control unit 61 connects the amplifier 13a to the FM tuner 23 by the switching unit 30a and connects the mixer 15 to the speaker 40 by the switching unit 30b. As a result, the notification broadcast signal input to the input terminal 11 is output by the speaker 40 via the mixer 15.

  In addition, when the user operates the power supply switching unit 51 to switch the power supply of the notification broadcast system 10 and the radio broadcast system 20 to ON, the power cutoff control unit 61 includes the amplifiers 13a and 13b. , The power supply of the AGC 14 and the oscillator 16, and the power supply of the FM tuner 23 are turned on. Accordingly, similarly to the case where switching is performed so that only the power supply of the notification broadcast system 10 is turned on, the power cutoff control unit 61 is connected to the amplifier 13a, the FM tuner 23, and the like by the switching unit 30a. And the mixer 15 and the speaker 40 are connected by the switching unit 30b. As a result, the notification broadcast signal input to the input terminal 11 is output by the speaker 40 via the mixer 15.

(Operation of notification broadcast receiver-operation of performing radio broadcast when notification broadcast is possible)
Next, an operation for performing notification broadcasting when notification broadcasting is possible will be described.
In this operation, when the user performs an operation of switching to radio broadcasting using the operation unit 50 after the notification broadcast receiver 201 is turned on, the power cutoff control unit 61 monitors the switching state of the power switching unit 51. To do.
Here, when the user's operation of the power supply switching unit 51 is switched so that “the power supply of the notification broadcast system 10 and the radio broadcast system 20 is turned on”, the power cutoff control unit 61 includes the amplifier 13a, 13b, the power supply of the AGC 14 and the oscillator 16, and the power supply of the FM tuner 23 are turned on. Accordingly, the power cutoff control unit 61 connects the amplifier 13a to the FM tuner 23 by the switching unit 30a and connects the FM tuner 23 to the speaker 40 by the switching unit 30b. Thereby, the radio broadcast signal input to the input terminal 11 is output by the speaker 40 via the FM tuner 23.

(Operation of notification broadcasting receiver-Operation when notification broadcasting is not possible)
Finally, the operation when notification broadcasting cannot be performed will be described.
In this operation, when the user performs an operation of switching to radio broadcasting using the operation unit 50 after the notification broadcast receiver 201 is turned on, the power cutoff control unit 61 monitors the switching state of the power switching unit 51. To do.
Here, when the user's operation of the power supply switching unit 51 is switched so that only the radio broadcast system 20 is turned on, the notification broadcast receiver 201 does not need to perform notification broadcast. In order to reduce the power consumption of the notification broadcast system 10, the power cutoff control unit 61 shuts off the power to the amplifiers 13 a and 13 b, the AGC 14 and the oscillator 16. Along with this, the power cutoff control unit 61 connects the BPF 22 to the FM tuner 23 by the switching unit 30a and connects the FM tuner 23 to the speaker 40 by the switching unit 30b. As a result, the radio broadcast signal input to the input terminal 21 is output by the speaker 40 via the FM tuner 23.

(effect)
As described above, according to the third embodiment, either one of the notification broadcast system 10 or the radio broadcast system 20 is selectively switched with respect to the speaker 40 based on a predetermined operation related to the notification broadcast system 10 or the radio broadcast system 20. Since the switching units 30a and 30b are provided, the notification broadcast system 10 or the radio broadcast system 20 can be automatically switched according to a predetermined operation related to the notification broadcast system 10 or the radio broadcast system 20, thereby improving the usability. be able to.

  In addition, when only the power of the radio broadcast system 20 is switched ON by the power switching unit 51, the power cutoff control unit 61 shuts off the power of the amplifiers 13a, 13b, the AGC 14 and the oscillator 16, and the power switching unit 51 When only the power supply of the notification broadcasting system 10 is switched ON, the power supply of the FM tuner 23 is cut off, so that the power supplies of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16 based on the switching operation of the power supply switching unit 51, or The power supply of the FM tuner 23 can be cut off, and the power cut-off control according to the user's needs can be performed.

[Embodiment 4]
Next, a fourth embodiment will be described. This form is a form in which power-off control is performed based on the measurement result of the level measuring means. The structure not particularly described is the same as that of the first embodiment, and the components and operations substantially the same as those of the first embodiment are used in the first embodiment as necessary. The same reference numerals or names are assigned and the description thereof is omitted.

(Constitution)
FIG. 4 is a block diagram showing a configuration of a notification broadcast receiver according to the fourth embodiment. As shown in FIG. 4, the notification broadcast receiver 301 according to the fourth embodiment further includes a level measuring unit 80 and omits the DET 17 from the components of the notification broadcast receiver 1 according to the first embodiment. It is configured.
Here, the switching unit 30a selectively switches either the amplifier 13a or the BPF 22 to the FM tuner 23 based on the level of the signal measured by the level measuring unit 80.
The switching unit 30b selectively switches either the amplifier 13b or the FM tuner 23 with respect to the speaker 40 based on the level of the signal measured by the level measuring unit 80 or a predetermined operation of the operation unit 50. .

(Configuration-level measurement unit)
The level measuring unit 80 is a level measuring unit that measures the level of the notification broadcast signal, and is a part of the parts of the notification broadcast system 10. Specifically, as shown in FIG. 4, the level measuring unit 80 measures the level of the notification broadcast signal branched by a branching device (not shown) provided between the BPF 12 and the amplifier 13a in the vicinity of the BPF 12. . The specific configuration of the level measuring unit 80 is arbitrary. For example, the level measuring unit 80 can be configured using a known detector (the same applies to the level measuring unit 80 of the fifth embodiment described later). .

(Broadcast receiver operation)
Next, the operation of the notification broadcast receiver 301 configured as described above will be described.

(Operation of notification broadcasting receiver-operation of performing notification broadcasting when notification broadcasting is possible)
First, the operation of performing notification broadcasting when notification broadcasting is possible will be described.
In this operation, the notification broadcast receiver 301 is turned on by using the operation unit 50 after the notification broadcast receiver 301 is turned on, as described in the operation of performing the notification broadcast when the notification broadcast of the first embodiment is possible. When switching to broadcasting is performed, the amplifier 13a and the FM tuner 23 are connected by the switching unit 30a, and the amplifier 13b and the speaker 40 are connected by the switching unit 30b via the mixer 15. Thereby, the notification broadcast signal input to the input terminal 11 is output by the speaker 40 via the amplifier 13b.

In this operation, when the notification broadcast receiver 301 is turned on, the power cutoff control unit 61 monitors the level of the notification broadcast signal measured by the level measurement unit 80.
Here, when the level of the notification broadcast signal measured by the level measurement unit 80 is equal to or higher than a predetermined value, the power cutoff control unit 61 turns on the power of all the components included in the notification broadcast receiver 301. To maintain.

(Operation of notification broadcast receiver-operation of performing radio broadcast when notification broadcast is possible)
Next, the operation of performing radio broadcasting when notification broadcasting is possible will be described.
In this operation, as described in the operation of performing the radio broadcast when the notification broadcast of the first embodiment is possible, after the notification broadcast receiver 301 is turned on, the user uses the operation unit 50 to perform the radio broadcast. When an operation for switching to broadcasting is performed, the amplifier 13a and the FM tuner 23 are connected by the switching unit 30a, and the FM tuner 23 and the speaker 40 are connected by the switching unit 30b. Thereby, the radio broadcast signal input to the input terminal 11 is output by the speaker 40 via the FM tuner 23.

  In addition, in this operation, the level monitoring is performed by the power shutoff control unit 61 and included in the notification broadcast receiver 301 in the same manner as described in the operation of performing the notification broadcast when the notification broadcast of the fourth embodiment is possible. The power supply of all the parts to be operated is maintained in the ON state.

(Operation of notification broadcasting receiver-Operation when notification broadcasting is not possible)
Finally, the operation when notification broadcasting cannot be performed will be described. Note that this operation is similar to the operation in the case where the notification broadcast of the first embodiment is not possible, and the user uses the operation unit 50 to perform the notification broadcast (or radio broadcast) after the notification broadcast receiver 301 is turned on. ), The amplifier 13a and the FM tuner 23 are connected by the switching unit 30a, and the amplifier 13b (or FM tuner 23 in the case of radio broadcasting) and the speaker 40 are connected by the switching unit 30b via the mixer 15. This is the operation applied when and are connected.

In this operation, when the notification broadcast receiver 301 is turned on, the level monitoring by the power cut-off control unit 61 is the same as described in the operation of performing the notification broadcast when the notification broadcast of the fourth embodiment is possible. Is done.
Here, when the level of the notification broadcast signal measured by the level measuring unit 80 falls below a predetermined value, the power cutoff control unit 61 shuts off the power sources of the amplifiers 13a, 13b, AGC 14 and oscillator 16. Accordingly, as described in the operation in the case where the announcement broadcasting of the first embodiment is not possible, the power shutoff control unit 61 connects the BPF 22 to the FM tuner 23 by the switching unit 30a, and The FM tuner 23 is connected to the speaker 40 by the switching unit 30b. As a result, the radio signal input to the input terminal 21 is output by the speaker 40 via the FM tuner 23.

  Thereafter, the power supply of the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the DET 17 is cut off by the power cut-off control unit 61, and the level of the notification broadcast signal measured by the level measurement unit 80 is equal to or higher than a predetermined value. In this case, the power cutoff control unit 61 restores the power sources of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16 to the ON state. Accordingly, as described in the operation in the case where the notification broadcast of the first embodiment is not possible, the power shut-off control unit 61 connects the amplifier 13a to the FM tuner 23 by the switching unit 30a. Then, the amplifier 13b is connected to the speaker 40 via the mixer 15 by the switching unit 30b. Thereby, the notification broadcast signal input to the input terminal 11 is output by the speaker 40 via the amplifier 13b.

(effect)
As described above, according to the fourth embodiment, the notification broadcasting system 10 includes the level measurement unit 80 on the upper side of the amplifiers 13a and 13b, the AGC 14, and the oscillator 16, and the power cutoff control unit 61 includes the level measurement unit 80. Since the power shut-off control is performed when the level of the notification broadcast signal measured at is lower than a predetermined value, the power shut-off control is automatically performed according to the signal level measured by the level measuring unit 80. Power consumption can be effectively reduced. In addition, since the level measurement of the signal by the level measurement unit 80 can be continued, when the level of the notification broadcast signal measured by the level measurement unit 80 becomes equal to or higher than a predetermined value, it becomes a target for power shutdown control. The power supply of the component can be returned to the ON state. Therefore, there is no need to provide a special part for returning the power supply of the part that is the target of the power shutdown control, so that the manufacturing cost can be reduced.
[Embodiment 5]
Next, a fifth embodiment will be described. This form is a form provided with the display means which displays the reception state of a notification broadcast signal. The structure not particularly described is the same as the structure of the third embodiment, and the components and operations substantially the same as those of the third embodiment are used in the third embodiment as necessary. The same reference numerals or names are attached and the description thereof is omitted.

(Constitution)
FIG. 5 is a block diagram showing a configuration of a notification broadcast receiver according to the fifth embodiment. As shown in FIG. 5, the notification broadcast receiver 401 according to the fifth embodiment further includes a level measurement unit 80 and a display unit 90 in addition to the components of the notification broadcast receiver 201 of the third embodiment. Configured.
Here, the switching unit 30 a selectively switches either the amplifier 13 a or the BPF 22 with respect to the FM tuner 23 based on the switching operation of the power supply switching unit 51.
In addition, the switching unit 30 b selectively switches either the amplifier 13 b or the FM tuner 23 with respect to the speaker 40 based on a switching operation of the power switching unit 51 or a predetermined operation of the operation unit 50.
Since the level measuring unit 80 is the same as the level measuring unit 80 of the fourth embodiment described above, description of the configuration of the level measuring unit 80 is omitted.

(Configuration-display section)
The display unit 90 is a display unit that displays the reception state of the notification broadcast signal. The specific configuration of the display unit 90 is arbitrary. For example, the display unit 90 can be configured using a known LED lamp, fluorescent lamp, or the like.

(Broadcast receiver operation)
Next, the operation of the notification broadcast receiver 401 configured as described above will be described. This operation is an operation applied to the operation in the case where the announcement broadcasting of the third embodiment is not possible.

In this operation, when the user performs an operation to switch to radio broadcasting using the operation unit 50 after the notification broadcast receiver 401 is turned on, the power cutoff control unit 61 monitors the switching state of the power switching unit 51. At the same time, the level of the notification broadcast signal measured by the level measuring unit 80 is monitored.
Here, when only the power supply of the radio broadcast system 20 is switched ON by the user's operation of the power supply switching unit 51, the power supply is the same as described in the operation in the case where the notification broadcast of the third embodiment is not possible. The shut-off control unit 61 shuts off the power sources of the amplifiers 13a and 13b, the AGC 14 and the oscillator 16 and performs switching control of the switching units 30a and 30b, and then transmits the radio broadcast signal input to the input terminal 21 by the speaker 40. Output via the FM tuner 23.
At this time, if the level of the notification broadcast signal measured by the level measuring unit 80 is lower than a predetermined value, the notification broadcast receiver 401 has not received the notification broadcast signal to the user. In such a case, the power-off control unit 61 causes the display unit 90 to display that the notification broadcast signal has not been received (specifically, the display unit 90 is turned off or blinked).

  On the other hand, if the level of the notification broadcast signal measured by the level measuring unit 80 is equal to or higher than a predetermined value, the user is notified that the notification broadcast receiver 401 is receiving the notification broadcast signal. Therefore, the power shutoff control unit 61 displays on the display unit 90 that the notification broadcast signal is received (specifically, the display unit 90 is turned on or the notification broadcast signal is not received). Blink at a different interval than the display).

(effect)
As described above, according to the fifth embodiment, the power cutoff control unit 61 notifies the level measurement unit 80 when the power switching unit 51 switches only the power of the radio broadcast system 20 to ON. When the level of the broadcast signal becomes equal to or higher than a predetermined value, the display unit 90 displays that the notification broadcast signal is being received. Therefore, when only the radio broadcast system 20 is turned on, On the other hand, the fact that the announcement broadcast signal is received can be presented, and missed listening to emergency broadcasts can be prevented.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.

(About distribution and integration)
Each electrical component described above is functionally conceptual and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each part is not limited to the one shown in the figure, and all or a part thereof may be functionally or physically distributed / integrated in arbitrary units according to various loads and usage conditions. Can be configured.

(Subject to power shutdown control)
In each embodiment, among the components included in the notification broadcasting system 10, it has been described that the power cutoff control targets are the amplifiers 13a, 13b, the AGC 14, the oscillator 16, and the DET 17. Not limited. For example, the power cutoff control target may be the amplifiers 13a and 13b and the AGC 14.

(About the configuration of the announcement broadcast receiver)
In the first, second, and fourth embodiments, it has been described that the notification broadcast receiver includes the radio broadcast system 20, but the radio broadcast system 20 may be omitted, for example. In this case, the target of power shutdown control is not limited to the amplifiers 13a, 13b, AGC 14, oscillator 16, and DET 17. For example, in addition to the components described above, the amplifier 41 and the speaker 40 are also subject to power shutdown control. Also good.

(About mutual combination of each embodiment)
The configurations and controls of the first to fifth embodiments may be combined with each other. For example, the notification broadcast receiver 301 according to the fourth embodiment may be combined with the detection unit 70 according to the second embodiment.
In this case, the power cutoff control unit 61 monitors the level of the signal measured by the level measurement unit 80 and the connection state between the notification broadcast receiver 1 and a transmission line (not shown) by the detection unit 70. When the level of the signal measured by the level measurement unit 80 is lower than a predetermined value, or when the detection unit 70 detects that the notification broadcast receiver 1 and the transmission line (not shown) are not connected, The power cutoff control unit 61 shuts off the power to the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the DET 17.
Further, when the power supply of the amplifiers 13a and 13b, the AGC 14, the oscillator 16, and the DET 17 is cut off by the power cut-off control unit 61, the level of the signal measured by the level measurement unit 80 becomes a predetermined value or more, and When the detection unit 70 detects that the notification broadcast receiver 1 and a transmission line (not shown) are connected, the power cutoff control unit 61 turns on the power of the amplifiers 13a, 13b, the AGC 14, the oscillator 16, and the DET 17. Return to the ON state.

(About operation of announcement broadcast receiver)
In the operation of the notification broadcast receiver 401 according to the fifth embodiment, when the level of the signal measured by the level measurement unit 80 becomes a predetermined value or more, the power shutoff control unit 61 uses the display unit 90 to notify the notification broadcast. Although it has been described that the signal reception is displayed, for example, the speaker 40 outputs a sound indicating that the notification broadcast signal is received (specifically, a buzzer sound “Peepy”). Also good.
(Appendix)
The notification broadcast receiver according to supplementary note 1 is a notification broadcast receiver that receives and broadcasts a notification broadcast signal via a transmission line, and performs a predetermined process including a reception process and an output process on the notification broadcast signal. A power shut-off control means for performing power shut-off control for shutting off power of at least a part of a plurality of parts included in the broadcast system and the notification broadcast system, and whether a predetermined condition for performing the power shut-off control is satisfied Determining whether or not based on the notification broadcast signal received by the notification broadcast system or a predetermined operation related to the notification broadcast system, and performing the power shutdown control when the predetermined condition is satisfied Means.
An announcement broadcast receiver according to attachment 2 is the announcement broadcast receiver according to attachment 1, wherein the announcement broadcast receiver receives and broadcasts the announcement broadcast signal and the radio broadcast signal. Radio broadcast system for performing predetermined processing including reception processing and output processing, audio output means for outputting sound, the notification broadcast signal received by the notification broadcast system, or the notification broadcast system or the radio broadcast And switching means for selectively switching either the notification broadcast system or the radio broadcast system with respect to the audio output means based on a predetermined operation relating to the system.
Further, the notice broadcast receiver according to supplementary note 3 is the notice broadcast receiver according to supplementary note 2, wherein only the power of the radio broadcast system is turned on, only the power of the notice broadcast system is turned on, or the notice broadcast system and the Power supply switching means for switching on the power to the radio broadcast system is provided, and the power cutoff control means performs the power cutoff control when only the power of the radio broadcast system is switched on by the power switching means. When only the power supply of the notification broadcast system is turned ON by the power supply switching means, the power supply of at least some of the plurality of components included in the radio broadcast system is shut off.
Further, the notice broadcast receiver according to appendix 4 is the notice broadcast receiver according to appendix 1 or 2, wherein the notice broadcast system is a part of a plurality of parts included in the notice broadcast system, and The control means has level measuring means for measuring the level of the notification broadcast signal on the upper side of the part that is subject to power cutoff control, and the power cutoff control means is the notification measured by the level measuring means. When the level of the broadcast signal falls below a predetermined value, the power cutoff control is performed.
Further, the notification broadcast receiver according to supplementary note 5 is the notification broadcast receiver according to supplementary notes 3 and 4, wherein the notification broadcast system has a display means for displaying a reception state of the notification broadcast signal, and the power cutoff control In the case where only the power of the radio broadcast system is switched ON by the power switching unit, the level of the notification broadcast signal measured by the level measuring unit is a predetermined value or more. The display means displays that the notification broadcast signal is being received.
Further, the notice broadcast receiver according to appendix 6 is the notice broadcast receiver according to appendix 1 or 2, wherein the notice broadcast system is a part of a plurality of parts included in the notice broadcast system, and the power cut-off The control means has electric field strength measuring means for measuring the electric field strength of the notification broadcast signal at a lower stage side than a component to be subjected to power cutoff control, and the power cutoff control means is measured by the electric field strength measuring means. When the electric field strength of the notification broadcast signal is lower than a predetermined value, the power shut-off control is intermittently performed, and the power of the component subject to the power shut-off control is intermittently shut off by the power shut-off control means. In the case where the electric field strength of the notification broadcast signal measured by the electric field strength measuring means exceeds a predetermined value, the power supply of the component to be subjected to the power shutoff control is turned on. To return to the state.
Further, the notification broadcast receiver according to appendix 7 is the notification broadcast receiver according to appendix 1 or 2, wherein the notification broadcast system detects whether or not the notification broadcast receiver and the transmission line are connected. The power cutoff control means performs the power cutoff control when the detection means detects that the notification broadcast receiver and the transmission line are not connected.
(Additional effects)
According to the notification broadcast receiver described in Supplementary Note 1, whether or not the predetermined condition for performing the power-off control is satisfied is determined based on the notification broadcast signal received by the notification broadcast system or the predetermined operation related to the notification broadcast system. Power cut-off control means for performing power cut-off control when the predetermined condition is satisfied, so that power cut-off control is automatically performed according to a predetermined operation related to a notification broadcast signal or a notification broadcast system. The power consumption can be reduced compared to the case where power is constantly supplied to a plurality of parts included in the notification broadcasting system. In particular, the standby time of the backup power source of the notification broadcast receiver can be extended by performing the power shutoff control at the time of a power failure.
Further, according to the notification broadcast receiver described in Appendix 2, based on the notification broadcast signal received in the notification broadcast system or the predetermined operation related to the notification broadcast system or the radio broadcast system, the notification broadcast system or the radio broadcast system Switching means for selectively switching either one of the sound output means to the notification broadcast signal, or switching between the notification broadcast system or the radio broadcast system in accordance with a predetermined operation relating to the notification broadcast system or the radio broadcast system Can be performed automatically, and usability can be improved.
Further, according to the notification broadcast receiver described in appendix 3, the power cutoff control means performs power cutoff control when only the power of the radio broadcast system is switched ON by the power switching means, and the power switching means When only the power of the notification broadcasting system is switched ON, the power of at least some of the parts included in the radio broadcasting system is cut off. Therefore, it is possible to shut off at least some of the power supplies of the plurality of components or at least some of the power supplies of the plurality of components included in the radio broadcasting system, and perform power cutoff control according to the user's needs.
Further, according to the notification broadcast receiver described in appendix 4, the notification broadcast system includes level measurement means for measuring the level of the notification broadcast signal on the upper side of the part that is the target of power cutoff control by the power cutoff control means. The power cutoff control means performs the power cutoff control when the level of the notification broadcast signal measured by the level measurement means falls below a predetermined value, so that the notification broadcast signal measured by the level measurement means The power shut-off control can be automatically performed according to the level of power, and the power consumption can be effectively reduced. Moreover, since the level measurement of the notification broadcast signal by the level measurement means can be continued, when the level of the notification broadcast signal measured by the level measurement means exceeds a predetermined value, the power supply of the parts subject to power shutdown control Can be returned to the ON state. Therefore, there is no need to provide a special part for returning the power supply of the part that is the target of the power shutdown control, so that the manufacturing cost can be reduced.
Further, according to the notification broadcast receiver described in appendix 5, the power cut-off control means includes the notification measured by the level measurement means when only the power of the radio broadcast system is switched ON by the power switching means. When the level of the broadcast signal exceeds a predetermined value, the display means displays that the notification broadcast signal is being received. Therefore, when only the power of the radio broadcast system is turned on, The fact that the notification broadcast signal has been received can be presented, and missed listening to emergency broadcasts and the like can be prevented.
Further, according to the notification broadcast receiver described in appendix 6, the notification broadcast system is configured to measure the electric field strength of the notification broadcast signal on the lower side of the part that is the target of the power cutoff control by the power cutoff control means. The power shutoff control means intermittently performs power shutoff control when the electric field strength of the notification broadcast signal measured by the electric field strength measurement means falls below a predetermined value. The power cutoff control can be automatically performed according to the electric field intensity, and the power consumption can be effectively reduced. In addition, when the power supply of the parts subject to the power shutoff control is intermittently shut off by the power shutoff control means, the electric field strength of the notification broadcast signal measured by the electric field strength measuring means becomes a predetermined value or more. In this case, since the power supply of the part subject to the power shutoff control is returned to the ON state, the power supply of the part subject to the power shutoff control is turned on while continuing the measurement of the electric field strength of the notification broadcast signal by the electric field strength measuring means. Without providing a special part for returning, it is possible to return the power source of the part to be subjected to the power shutoff control, and to reduce the manufacturing cost.
Further, according to the notification broadcast receiver described in appendix 7, the power cutoff control means performs the power cutoff control when the detection means detects that the notification broadcast receiver and the transmission line are not connected. The power cutoff control can be automatically performed according to the detection result of the detection means, and the power consumption can be effectively reduced while the transmission line is removed from the notification broadcast receiver.

1, 101, 201, 301, 401 Notification broadcast receiver 10 Notification broadcast system 11, 21 Input terminal 12, 22 BPF
13a, 13b, 41 Amplifier 14 AGC
15 Mixer 16 Oscillator 17 DET
DESCRIPTION OF SYMBOLS 20 Radio broadcast system 23 FM tuner 30a, 30b Switching part 40 Speaker 50 Operation part 51 Power supply switching part 60 Control part 61 Power supply cutoff control part 70 Detection part 80 Level measurement part 90 Display part

Claims (6)

An announcement broadcast receiver for receiving an announcement broadcast signal via a transmission line and receiving and broadcasting a radio broadcast signal ,
A notification broadcast system that performs predetermined processing including reception processing and output processing on the notification broadcast signal, the notification broadcast system including first input means to which the notification broadcast signal and the radio broadcast signal are input ,
A radio broadcast system that performs predetermined processing including reception processing and output processing on the radio broadcast signal, the radio broadcast system including second input means to which the radio broadcast signal is input;
Audio output means for outputting audio;
The notification broadcast system or the radio broadcast system based on the notification broadcast signal input to the first input means and received by the notification broadcast system or a predetermined operation related to the notification broadcast system or the radio broadcast system Switching means for selectively switching any one of the audio output means,
A power shutoff control means for performing power shutoff control for shutting off at least a part of the power of a plurality of components included in the notification broadcast system, and whether or not a predetermined condition for performing the power shutoff control is satisfied. Determination based on the notification broadcast signal input to the first input means and received by the notification broadcast system or a predetermined operation related to the notification broadcast system, and the power-off control when the predetermined condition is satisfied Bei example and a power cutoff control means for,
When the notification broadcast receiver cannot broadcast based on the notification broadcast signal input to the first input means and received by the notification broadcast system, the power shutoff control means assumes that the predetermined condition is satisfied. The radio broadcast system is connected to the audio output means for performing the power cutoff control and performing broadcasting based on the radio broadcast signal input to the second input means and received by the radio broadcast system. To control the switching means to switch,
Announcement broadcast receiver. Power supply switching means for turning on only the power of the radio broadcast system, turning on only the power of the notification broadcast system, or turning on the power of the notification broadcast system and the radio broadcast system;
The power cutoff control means includes
When only the power source of the radio broadcast system is switched ON by the power source switching means, the power cutoff control is performed,
When only the power of the notification broadcasting system is switched ON by the power switching means, the power of at least some of the plurality of parts included in the radio broadcasting system is shut off.
The notification broadcast receiver according to claim 1 . The announcement broadcast system is
Level measurement means that is a part of a plurality of parts included in the notification broadcast system and that measures the level of the notification broadcast signal on the upper side of the part that is subject to power cutoff control by the power cutoff control means. And
The power cutoff control means includes
When the level of the notification broadcast signal measured by the level measuring means falls below a predetermined value, the power cutoff control is performed .
The notification broadcast receiver according to claim 1 . The announcement broadcast system is
A part of a plurality of parts included in the notification broadcast system, and a level measurement unit that measures the level of the notification broadcast signal on the upper side of the part that is the target of power cutoff control by the power cutoff control unit;
Display means for displaying the reception status of the notification broadcast signal ,
The power cutoff control means includes
In the case where only the power source of the radio broadcast system is switched ON by the power source switching unit, the display unit when the level of the notification broadcast signal measured by the level measuring unit exceeds a predetermined value By displaying that the notification broadcast signal is received ,
The notification broadcast receiver according to claim 2 . The announcement broadcast system is
Electric field strength measuring means for measuring the electric field strength of the notification broadcast signal on the lower side of the parts that are part of the plurality of parts included in the notification broadcasting system and are subject to power cutoff control by the power cutoff control means Have
The power cutoff control means includes
When the electric field strength of the notification broadcast signal measured by the electric field strength measuring means is lower than a predetermined value, the power cutoff control is intermittently performed ,
When the power supply of the component that is the target of the power shutdown control is intermittently shut off by the power cutoff control means, the electric field strength of the notification broadcast signal measured by the electric field strength measurement means is a predetermined value or more. In such a case, the power supply of the parts subject to the power shutdown control is returned to the ON state .
The notification broadcast receiver according to claim 1 . The announcement broadcast system is
Having detection means for detecting whether the notification broadcast receiver and the transmission line are in a connected state,
The power cutoff control means includes
When it is detected by the detection means that the notification broadcast receiver and the transmission line are not connected, the power cutoff control is performed .
The notification broadcast receiver according to claim 1 .

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