JP2016092764A - Radio receiver for emergency broadcast - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable radio receiver for emergency broadcast free from malfunction and capable of transmitting emergency broadcast accurately by using broadcast, without being affected by noise such as lightning surge.SOLUTION: A radio receiver 1 for emergency broadcast includes a signal processing section 23 for saving a DTMF signal when a predetermined number of DTMF signals, included in a broadcast signal received by a receiving section 22, are detected in a predetermined time, a code input processing section 202 for determining whether a prescribed number of code information match, when the code information consisting of a combination of a predetermined number of DTMF signals obtained from the signal processing section 23 is inputted predetermined number of times, a storage section 21 for storing disaster information displayed corresponding to a predetermined combination of the DTMF signals out of the code information, and a code determination processing section 203 for determining whether or not the DTMF signals out of the code information, determined to match in the code input processing section 202, is a predetermined combination.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an emergency broadcast radio receiver capable of reporting emergency broadcasts related to disaster prevention or disasters.

  In Japan, natural disasters such as earthquakes, tsunamis, typhoons, and torrential rains occur every year. To prepare for such disasters, it is necessary to provide disaster prevention or disaster-related information to residents in the target area accurately and quickly. It has been requested.

  Provision of information related to disaster prevention or disaster is transmitted to residents in the target area through television broadcasting, radio broadcasting, and disaster prevention administrative radio, but the receiver is turned off at midnight. If this is the case, there is a problem that information is not transmitted and the response to the disaster is delayed. In addition, in the case of a disaster that occurs locally, such as torrential rain, providing information through wide-area broadcasting often causes highly urgent information to be provided to unrelated areas. There is a demerit that the response at the time when the residents' perception of information declines is delayed.

  For this reason, it has been proposed to provide disaster information using community FM broadcasts established in various places in Japan in recent years. For example, in Patent Document 1, a predetermined DTMF signal (Dual-Tone Multi-Frequency) is formed corresponding to the operation of a switch that is input when an emergency broadcast is performed, and is broadcast in an FM broadcast signal. It is described that when a predetermined DTMF signal included in the FM broadcast is detected in the broadcast receiver, the power is automatically turned on to output at a large volume. Further, in Patent Document 2, when at least one of a DTMF signal and an EWS signal indicating an emergency broadcast is included in an FM broadcast signal due to the occurrence of a disaster, the receiver is automatically turned on. The point that emergency broadcast messages are output at high volume is described. In Patent Document 3, after detecting a DTMF signal included in a radio broadcast signal, a DTMF signal detected when the next DTMF signal is detected within a predetermined time is stored, and a plurality of stored DTMF signals are stored. Describes an emergency broadcast radio receiver that displays disaster information corresponding to a predetermined combination on a liquid crystal display panel and an LED display and outputs sound from a speaker.

Registered Utility Model No. 3118188 JP 2009-232247 A JP 2012-182686 A

  When the emergency broadcast is broadcast by detecting a predetermined DTMF signal as in Patent Documents 1 and 2 described above, there is a problem that a signal similar to the DTMF signal is generated in the broadcast signal and malfunctions. Therefore, in Patent Document 3, it is possible to solve such a malfunction by broadcasting a corresponding emergency broadcast based on a predetermined combination of a plurality of DTMF signals.

  However, when a radio receiver for emergency broadcasting is installed in each home and trial operation is performed, a malfunction occurs in which the emergency broadcast is broadcast even though the emergency broadcast signal composed of the DTMF signal is not transmitted. was there. As a result of analyzing the cause of such malfunction, it was confirmed that a signal similar to the DTMF signal exists in the noise generated with the lightning surge. In situations where emergency broadcasts such as disaster information are required, the weather conditions often involve lightning in the surrounding area, and if they are not broadcast accurately in areas where emergency broadcasts are necessary, they will cause social confusion and emergency broadcasts. Therefore, the malfunction of emergency broadcasting must be surely prevented.

  Accordingly, the present invention provides a highly reliable emergency broadcast radio receiver that can accurately transmit an emergency broadcast using a broadcast signal without being affected by noise such as a lightning surge and has no malfunction. It is for the purpose.

  An emergency broadcast radio receiver according to the present invention is based on a reception unit that receives a broadcast signal, a display unit that displays disaster information about the emergency broadcast, the received broadcast signal, and the emergency broadcast signal included in the broadcast signal. An emergency broadcast radio receiver having an output unit for outputting sound, and storing a DTMF signal when a predetermined number of DTMF signals included in the broadcast signal received by the receiving unit are detected within a predetermined time And a code input processing unit that determines whether or not a predetermined number of pieces of code information match when code information composed of a predetermined number of DTMF signals obtained from the signal processing unit is input a predetermined number of times. It is determined that the code input processing unit matches the storage unit that stores disaster information to be displayed corresponding to a predetermined combination of DTMF signals in the code information A code determination processing unit for determining whether or not the DTMF signal is a predetermined combination in the code information, and disaster information corresponding to the combination when the DTMF signal is determined to be a predetermined combination on the display unit A display processing unit for displaying, and an output processing unit for outputting audio from the output unit when it is determined that the DTMF signal is a predetermined combination. Furthermore, the code input processing unit determines whether a majority of the code information among the predetermined number of input code information matches. Furthermore, the code information includes a combination of DTMF signals related to specific information, the storage unit stores a predetermined combination of DTMF signals related to the specific information, and the code determination processing unit Control is performed so that emergency broadcasting is performed when the combination of DTMF signals relating to specific information matches a predetermined combination stored. Further, an operation processing unit for changing the setting of the combination of the stored DTMF signals of the code information is provided.

  The present invention has the above-described configuration, so that the code information composed of a combination of a predetermined number of DTMF signals corresponding to the emergency broadcast signal is input a predetermined number of times with respect to the emergency broadcast signal transmitted a predetermined number of times. Since the emergency broadcast is performed based on the code information determined to match, it is possible to make an emergency using a broadcast signal without being affected by noise such as lightning surge. Broadcast can be transmitted accurately.

It is an external appearance perspective view regarding embodiment which concerns on this invention. It is a block block diagram regarding the control processing of the radio receiver for emergency broadcasts. It is a table | surface which shows the correspondence of the combination of a DTMF signal, and a display character. It is explanatory drawing regarding the code information which combined the some DTMF signal corresponding to an emergency broadcast signal. It is a processing flow regarding the detection process of a DTMF signal. It is a processing flow regarding interrupt processing. It is a processing flow regarding emergency broadcast processing. It is a processing flow regarding emergency broadcast processing.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. FIG. 1 is an external perspective view showing an example of an embodiment according to the present invention. In this example, an emergency broadcast radio receiver 1 has a speaker 2 that outputs sound on the front surface, a display of settings such as time and frequency, a display panel 3 that displays the contents of an emergency broadcast, and a plurality of different colors. An LED display 4 that includes LED elements and displays the contents of emergency broadcasts in light color, a reception button 5 that is set to receive emergency broadcasts manually, and a power button 6 that turns on and off the radio receiver 1 Is provided. Further, on the upper surface of the emergency broadcast radio receiver 1, there are provided a channel selection knob 7 and a volume adjustment knob 8 for receivable broadcasts such as AM broadcast, FM broadcast, and multimedia broadcast. A manual generator 10 having an LED light 9 for illumination and a handle for turning is provided.

  Although not shown, the back of the emergency broadcast radio receiver 1 contains an outlet and a power cord for connecting to a commercial power source, an antenna connection terminal for connecting to an external antenna, and a plug for charging a mobile phone. . Moreover, the emergency broadcast radio receiver 1 has a built-in storage battery, and the storage battery is charged when a commercial power source is connected or when the generator 10 generates power.

  Since the emergency broadcast radio receiver 1 has such a configuration, it can be used as a normal radio receiver by operating the tuning knob 7 and the volume adjusting knob 8 when used in a house. In the event of a disaster, emergency broadcasts can be received and the contents of those broadcasts transmitted reliably, and when evacuated, they can be taken out and listen to emergency broadcasts at the evacuation center. Even in the event of a power outage or outdoor use, it can be used continuously while charging the storage battery with a generator, and can also be used to charge a mobile phone.

  Also, the emergency broadcast signal is an emergency broadcast signal that is transmitted when the same signal is transmitted a predetermined number of times, and when the predetermined number of signals are received after receiving the predetermined number of transmitted signals. Therefore, the emergency broadcast is performed and the influence of noise such as a lightning surge can be suppressed as much as possible.

  FIG. 2 is a block configuration diagram relating to control processing of the emergency broadcast radio receiver 1. The emergency broadcast radio receiver 1 includes a control unit 20 that performs control processing of the entire apparatus, a storage unit 21 that stores programs and data necessary for control processing, AM broadcast, FM broadcast, television broadcast, multimedia broadcast reception, and the like. A receiving unit 22 for receiving a possible broadcast signal, a signal processing unit 23 for processing a received signal from the receiving unit 22 for receiving a broadcast signal and detecting a DTMF signal included therein, and amplifying the received broadcast signal An operation unit 25 for outputting operation signals to the control unit 20 such as an amplification unit 24 to be output to the speaker 2, a reception button 5, a power button 6, a tuning knob 7 and a volume adjustment knob 8, and a control signal from the control unit 20 LED display section 26 that causes LED display 4 to emit light based on the above, and panel display section 27 that displays display panel 3 based on a control signal from control section 20. There. In this example, the speaker 2 and the amplification unit 24 correspond to an output unit.

  The control unit 20 determines whether an operation processing unit 201 that performs an operation process based on an operation signal input from the operation unit 25, and whether code information including a combination of a plurality of detected DTMF signals has been input a predetermined number of times. A code input processing unit 202 that determines whether or not a prescribed number of pieces of code information matches, and a code decision processing unit 203 that determines a combination of DTMF signals among the pieces of code information that are determined to match the prescribed number. Based on the combination of the display processing unit 204 that performs display control of the LED display unit 26 and the panel display unit 27 based on the combination of the DTMF signal of the code information, the operation signal from the operation unit 25 and the DTMF signal of the determined code information. An output processing unit 205 that controls the receiving unit 22 to output a desired broadcast sound to the speaker 2 is provided.Then, even when the power button 6 is set to OFF, the control unit 20 receives the emergency broadcast signal and sets the standby state in which the emergency broadcast can be automatically output.

  The storage unit 21 stores a table relating to code information composed of a combination of a plurality of DTMF signals. For example, a specific combination of DTMF signals in code information set as each emergency broadcast signal in a plurality of broadcast signals for transmitting emergency broadcasts is stored in association with information related to emergency broadcast contents such as target area and disaster information. A specific combination of DTMF signals in the corresponding code information is stored in association with the display information. For example, the storage unit 21 stores specific information corresponding to the location (prefecture, municipality) where the radio receiver is installed and the attribute (a public facility such as a hospital or school, an elderly person, a person who needs support). This makes it possible to communicate disaster information in detail according to the specific information.

  The receiving unit 22 includes three tuners 22a, 22b, and 22c. The tuners 22a and 22b are detection tuners that are set to constantly receive broadcast signals that transmit emergency broadcast signals, respectively. Is a setting tuner that can arbitrarily set the broadcast signal to be received and can adjust the volume of the received broadcast. The tuners 22a and 22b are preset to a predetermined broadcast frequency by the output processing unit 205. For example, the tuner 22a is set to the frequency of the community FM broadcast to which the emergency broadcast signal is transmitted, and the tuner 22b is set to the frequency of the FM broadcast in the prefecture where the emergency broadcast signal is transmitted. Thus, the receiving unit 22 has a function of always receiving a broadcast signal for transmitting an emergency broadcast signal, together with a function for arbitrarily setting a broadcast signal to be received. Therefore, even when an emergency broadcast signal is transmitted in any of a plurality of types of broadcasts, the emergency broadcast signal can be reliably received.

  The signal processing unit 23 detects a DTMF signal included in a reception signal from the reception unit 22 that receives a broadcast signal, and stores a predetermined number of DTMF signals detected when a predetermined number of DTMF signals are detected within a predetermined time. To do. The detection of the DTMF signal is performed on the broadcast signals received by the tuners 22a and 22b, which are detection tuners set to receive the emergency broadcast signal. The tuner 22a includes a decoder 23a that detects the DTMF signal. Connected to the tuner 22b is a decoder 23b for detecting a DTMF signal.

  The DTMF signals detected and stored in the decoders 23a and 23b are transmitted to the code input processing unit 202 to determine the number of times code information is input consisting of a combination of a plurality of DTMF signals and the number of coincidence of input code information. Is done.

  In this example, when 12 DTMF signals are stored in the decoder 23 a or 23 b, the combination data is transmitted to the code input processing unit 202. Note that the number of combinations of DTMF signals can be appropriately set as necessary, and may be set to a number other than 12.

  As shown in FIG. 3, the DTMF signal is defined by a combination of two according to the recommendation of CCITT (International Telegraph and Telephone Consultative Committee), and is composed of four frequencies in the voice band corresponding to the push button of the telephone. Two frequencies respectively selected from the high group and the low group are combined to form one DTMF signal. The DTMF signal is given a total of 16 types of codes including numbers from 0 to 9 and symbols of *, #, and A to D corresponding to combinations of four types of frequencies of the high group and the low group. Yes. By combining a plurality of such DTMF signals, a large number of individually identifiable signals can be created.

  FIG. 4 shows an example of code information obtained by combining a plurality of DTMF signals corresponding to an emergency broadcast signal. In this example, code information including a 12-digit code is obtained based on a series of 12 DTMF signals. The first digit is set as the start key, and the last 12 digits are set as the end key. Two to six digits are information about the local government that is the target of emergency broadcasting, and information corresponding to prefectures and municipalities is set. 7-9 digits are set for the target districts and target persons (hospitals, public facilities such as schools, supporters required, elderly people, etc.) and can be specified in detail based on the contents of the emergency broadcast. It can be done. The 10th to 11th digits set information related to control such as volume control and activation control of the radio receiver.

  The operation processing unit 201 performs processing so that the specific information stored in the storage unit 21 is changed by a button operation. For example, when the power is off, the setting change mode can be set by a predetermined button operation, and the button can be easily changed according to the place where the specific information is installed. Further, when setting the frequency of the tuner, processing is performed so as to set the frequency by operating a preset button provided in advance. For example, when the preset button is continuously pressed for a predetermined time, it is possible to easily set the frequency of the preset button by performing processing for setting the frequency being received to the frequency of the preset button.

  The code input processing unit 202 acquires code information composed of a combination of a plurality of DTMF signals transmitted from the signal processing unit 23, counts the number of input code information, and determines whether a predetermined number of times is input. A series of DTMF signals corresponding to such code information is transmitted the same number of times as an emergency broadcast signal. Therefore, by determining whether a predetermined number of code information has been input, It can be determined whether there is. Therefore, even if a series of DTMF signals are detected due to the influence of noise such as a lightning surge, they are not processed as emergency broadcast signals unless they are detected a predetermined number of times, and it is possible to reliably prevent malfunction due to noise.

  In addition, the code input processing unit 202 determines whether or not a predetermined number of pieces of code information match among the pieces of code information input a predetermined number of times. Even if the same signal transmitted a predetermined number of times becomes a partly different signal due to noise, it is transmitted if it is determined that it is an emergency broadcast signal transmitted when the prescribed number of pieces of code information match among the predetermined number of times. The contents of the emergency broadcast signal can be received almost accurately as code information. The prescribed number to be set is preferably set to a majority of the predetermined number of times. Specifically, the same code information is transmitted three times or more as an emergency broadcast signal, and the majority (3 Code information that is determined to be identical) can be processed as an emergency broadcast signal.

  The code determination processing unit 203 determines whether or not it is a combination of DTMF signals in the code information stored in the storage unit 21 based on the code information determined to match the prescribed numbers transmitted from the code input processing unit 202. In the case of the stored combination, the display processing unit 204 and the output processing unit 205 are made to perform control based on the combination data.

  For example, when it is determined that the combination of DTMF signals in the code information corresponds to a preset broadcast start key, the determination result is transmitted to the display processing unit 204 and the output processing unit 205. The display processing unit 204 controls the light emission so that the LED display unit 26 blinks red, and the output processing unit 205 controls the tuner 22c, which is a setting tuner, to switch to the set broadcast frequency and the speaker. The volume from 2 is controlled to increase.

  When it is determined that the combination of DTMF signals in the code information corresponds to the contents related to emergency broadcasting such as the target area and disaster information, the determination result is transmitted to the display processing unit 204. Then, the display processing unit 204 controls the corresponding character information to be displayed on the panel display unit 27.

  When it is determined that the combination of DTMF signals in the code information corresponds to a preset broadcast end key, the determination result is transmitted to the display processing unit 204 and the output processing unit 205. The display processing unit 204 controls the LED display unit 26 so as to stop the blinking display and also controls the panel display unit 27 so as to stop displaying the character information. Further, the output processing unit 205 controls to return to the frequency of the broadcast before the emergency broadcast is started and controls the volume from the speaker 2 to return to the level before the emergency broadcast is started.

  When the code determination processing unit 203 determines that code information corresponding to an emergency broadcast signal of another broadcast is input during the broadcast in which the emergency broadcast is started, the display processing unit is based on the start key in the code information. 204 and the output processing unit 205 are controlled to switch to another broadcast emergency broadcast. Then, display control is performed on the display processing unit 204 based on the control information regarding the contents of the emergency broadcast in the code information, and the display processing unit 204 and the output processing unit 205 are stopped based on the end key in the code information. Take control.

  Therefore, even when emergency broadcasts transmitted from a plurality of broadcasts overlap, the latest emergency broadcast is always transmitted. For example, when there is an emergency broadcast related to the first report of disaster information in a narrow target area from a community FM broadcast, even if there is an emergency broadcast related to disaster information in a wide target area from a prefectural FM broadcast Broadcast can be transmitted. When it is desired to listen to the emergency broadcast of the community FM broadcast as it is, by operating the reception button 5, it is possible to manually switch to a plurality of broadcasts that transmit the emergency broadcast and set the community FM broadcast.

  FIG. 5 is a processing flow relating to detection processing of DTMF signals broadcast as emergency broadcast signals and input processing of code information. First, in order to receive an emergency broadcast signal, an initial setting for inputting setting data of a use region and the like is performed (S100), and an interrupt processing timing for detection is set (S101). The timing of interrupt processing may be set so that interrupt processing is performed at detection intervals such as 0.125 seconds, 0.25 seconds, 0.5 seconds, and 1 second, for example. By counting the number of interrupt processes, the detection interval can be set to a predetermined time, and it is possible to determine whether or not a DTMF signal has been detected within the predetermined time.

  After setting the interrupt processing, it is checked whether or not a DTMF signal serving as an emergency broadcast start signal has been transmitted (S102). If transmission of the DTMF signal is detected (S102-YES), the number N of inputs of the DTMF signal is less than 12. Is checked (S103). When transmission of the DTMF signal is not detected (S102-NO), the presence / absence of repeated transmission is detected. If the signal input count N is less than 12 (S103-YES), the detected DTMF signal is stored (S104), and the count is incremented by adding 1 to the signal input count N (S105).

  Then, the interrupt count W is reset (S106), and it is checked whether timeout is permitted (S107). If the timeout is not permitted (S107-NO), the process returns to step S102 to check whether there is a DTMF signal transmission. If the timeout is permitted in step S107 (S107-YES), the signal input count N is reset (S108) and the code input count C is reset (S109), and the process returns to step S102 to transmit the DTMF signal. Check if it exists.

  If the number N of inputs is 12 or more in step S103 (S103-NO), the stored combination of DTMF signals is stored as code information, and it is checked whether the number C of code inputs is less than 3 (S110). In this example, since the predetermined number of times the code information is input is set to 3, when the code input number C is less than 3 (S110-YES), a count up to add 1 to the input number C is performed. (S111), the signal input count N is reset (S112), and the process proceeds to step S106.

  When the code input count C is 3 or more (S110-NO), it is determined whether or not the specified number of code information matches among the stored three pieces of code information. In this example, it is determined whether or not the two code information of the majority as the prescribed number match (S113). If the two code information matches (S113-YES), the process proceeds to an emergency broadcast process described later (S114). ). Then, the signal input count N is reset (S115) and the code input count C is reset (S116). Next, the interrupt count W is reset (S117), and the process returns to step S102 to check whether there is a DTMF signal transmission. If the two pieces of code information do not match (S113-NO), the process proceeds to step S115 without performing the emergency broadcast process. It should be noted that the number N of input DTMF signals can be set to a number other than 12, and the number C of code information inputs can be set to 3 or more. For example, the code input count C may be set to 5 or more, the specified number may be set to a majority of 3 or more, and it may be set to determine whether the specified number of code information matches. The specified number may be set to 2 or more and half or less of the code input number if the influence of noise such as lightning surge can be surely removed. For example, when the input number is 4 The specified number can be set to 2 or the specified number can be set to 2 when the number of inputs is 5.

  FIG. 6 is a processing flow regarding interrupt processing. First, an interrupt process is performed at the set timing (S200), and the detection process shown in FIG. 5 is performed. When the interrupt process is performed, a count-up is performed by adding 1 to the interrupt count W. (S201). Then, it is checked whether or not the interrupt count W is equal to or greater than the predetermined count T (S202). If the interrupt count W is equal to or greater than the predetermined count (S202-YES), a setting is made to allow timeout (S203), and the process ends. If the interrupt count W is smaller than the predetermined count T in step S202, the process is terminated without setting for permitting timeout.

  By performing the above processing, the DTMF signal is detected every time the interrupt processing is performed, and when the DTMF signal is detected, the DTMF signal is stored, and the number of inputs N is 12 or more-that is, 12 When the DTMF signal is stored, it is stored as code information. When the interrupt count W is equal to or greater than the predetermined count T between the detection of the DTMF signal and the detection of the next DTMF signal, the time set by the interrupt processing setting timing and the predetermined count T It is set so that timeout is allowed assuming that three pieces of code information are not detected. In the emergency broadcast, since the same three pieces of code information are set in advance, the emergency broadcast will not be advanced unless the three pieces of code information are detected, and malfunction of the emergency broadcast can be prevented. . Even if three pieces of code information are detected, the emergency broadcast processing will not proceed unless the majority of the two pieces of code information match, so even if code information is detected by mistake due to lightning surges or other noise. The same code information is not repeatedly detected. For this reason, it is possible to reliably remove the influence of noise, and it is possible to accurately transmit emergency broadcasting to a necessary area.

  7 and 8 are process flows related to emergency broadcast processing. First, determination processing of code information obtained by the above-described code input processing is performed (S300). In the determination process, it is determined whether the combination of the DTMF signals in the obtained code information matches a predetermined combination stored in advance. For example, it is determined whether the broadcast is an emergency broadcast corresponding to the installation location of the radio receiver by determining whether specific information such as the start key, local government information, and regional information in the code information matches the stored combination. Can do. It is checked whether the combination of DTMF signals is code information corresponding to an emergency broadcast signal of any broadcast related to specific information such as an installation location (S301). In this example, community FM broadcasts and prefecture FM broadcasts are set as broadcasts for transmitting emergency broadcasts. For example, it is determined from which broadcast the emergency broadcast signal is based on a start key of code information. If it is not the code information corresponding to the emergency broadcast signal related to the specific information such as the installation location (S301-NO), the process ends as it is.

  If the code information corresponds to the emergency broadcast signal (S301-YES), it is checked whether the code information corresponds to the community FM broadcast (S302). If the code information corresponds to the community FM broadcast (S302-YES) Then, it is checked whether the radio receiver is turned on (S303). If the code information corresponding to the emergency broadcast signal does not correspond to the community FM broadcast (S302-NO), the process proceeds to step S318 in FIG.

  If the power is on (S303-YES), a switching process is performed to set the tuner 22c to the frequency of the community FM broadcast (S304). Based on the combination of the DTMF signals related to the control information in the code information, the character display on the display panel 3 and the light emission display on the LED display 4 are performed (S305), and the voice output process is performed from the speaker 2 with a predetermined large volume ( S306).

  Next, a determination process of the code information obtained after the display process is performed (S307), and it is checked whether the code information corresponds to the emergency broadcast signal of the prefecture area FM broadcast (S308). If the code information corresponds to the prefectural FM broadcast (S308-YES), the process proceeds to step S319 in FIG. If it is not the code information corresponding to the prefectural FM broadcast (S308-NO), it is checked whether the emergency broadcast is stopped based on the end key of the code information (S309), and if the emergency broadcast is stopped (S309-YES) ) The character display on the display panel 3 and the light emission display on the LED display 4 are not displayed, and a switching process for returning to the frequency and volume of the broadcast before the emergency broadcast is performed (S310). When the emergency broadcast is not stopped (S309-NO), the process returns to step S305, and the broadcast transmitting the emergency broadcast is continuously output.

  If the power is off in step S303 (S303-NO), the power is automatically turned on (S311), and then a channel selection process is performed to set the frequency of the community FM broadcast corresponding to the emergency broadcast signal ( S312). Then, based on the combination of the DTMF signals related to the control information in the code information, the character display on the display panel 3 and the light emission display on the LED display 4 are performed (S313), and the sound output process is performed from the speaker 2 at a predetermined large volume ( S314).

  Next, determination processing of the code information obtained after the display processing is performed (S315), and it is checked whether the code information corresponds to the emergency broadcast signal of the prefectural area FM broadcast (S316). If the code information corresponds to the prefectural FM broadcast (S316-YES), the process proceeds to step S319 in FIG. When it is not the code information corresponding to the prefectural area FM broadcast (S316-NO), it is checked whether the emergency broadcast is stopped based on the end key of the code information (S317), and when the emergency broadcast is stopped (S317-YES). ), And a stop process for setting the character display on the display panel 3 and the light emission display on the LED display 4 to the non-display process and setting the standby state before the emergency broadcast (S318). When the emergency broadcast is not stopped (S317-NO), the process returns to step S313, and the broadcast for transmitting the emergency broadcast is continuously output.

  When the emergency broadcast signal is not code information corresponding to the community FM broadcast in step S302 (S302-NO), it is checked whether the emergency broadcast signal is code information corresponding to the prefecture FM broadcast (S319). (S319-YES), it is checked whether the radio receiver is powered on (S320). If the emergency broadcast signal is not code information corresponding to the prefectural FM broadcast (S319-NO), the process is terminated as it is.

  When the power is on (S320-YES), the switching process is performed so that the tuner 22c is set to the frequency of the prefectural FM broadcast (S321). Then, based on the combination of the DTMF signals related to the control information in the code information, the character display on the display panel 3 and the light emission display on the LED display 4 are performed (S322), and the sound output process is performed from the speaker 2 with a predetermined large volume ( S323).

  Next, determination processing of code information obtained after the display processing is performed (S324), and it is checked whether the code information corresponds to an emergency broadcast signal of community FM broadcasting (S325). If the code information corresponds to the community FM broadcast (S325-YES), the process proceeds to step S303 in FIG. If it is not the code information corresponding to the community FM broadcast (S325-NO), it is checked whether the emergency broadcast is stopped based on the end key of the code information (S326), and if the emergency broadcast is stopped (S326-YES) ) The character display on the display panel 3 and the light emission display on the LED display 4 are not displayed, and a switching process for returning to the frequency and volume of the broadcast before the emergency broadcast is performed (S327). When the emergency broadcast is not stopped (S326-NO), the process returns to step S322, and the broadcast for transmitting the emergency broadcast is continuously output.

  If the power is off in step S320 (S320-NO), the power is automatically turned on (S328), and then the prefectural FM broadcast tuning process corresponding to the emergency broadcast signal is performed (S329). Then, based on the combination of the DTMF signals related to the control information in the code information, the character display on the display panel 3 and the light emission display on the LED display 4 are performed (S330), and the sound output process is performed from the speaker 2 with a predetermined large volume ( S331).

  Next, determination processing of the code information obtained after the display processing is performed (S332), and it is checked whether the code information is a combination corresponding to the emergency broadcast signal of the community FM broadcast (S333). If the code information corresponds to the community FM broadcast (S333-YES), the process proceeds to step S303 in FIG. If it is not the code information corresponding to the community FM broadcast (S333-NO), it is checked whether the emergency broadcast is stopped based on the end key of the code information (S334), and when the emergency broadcast is stopped (S334-YES) ), A display unit 3 character display and an LED display 4 light-emitting display are not displayed, and a stop process is performed to set the standby state before the emergency broadcast (S335). When the emergency broadcast is not stopped (S334-NO), the process returns to step S330, and the broadcast that transmits the emergency broadcast is continuously output.

  By processing as described above, when the power is turned on in the standby state, it starts in the normal arbitrary reception state (a state that can be set by the operation knob). Is automatically switched to the broadcast corresponding to the determined code information, the emergency broadcast is output at a high volume, and the characters on the display panel and the LED display are lit to display the user's attention. Arouse. Even when an emergency broadcast signal is received in the standby state when the power is turned off, it automatically starts based on the determined code information, receives the corresponding broadcast, outputs the emergency broadcast at a loud volume and displays it Character display on the panel and light emission display on the LED display are performed.

  Then, the emergency broadcast automatically activated with the power on is automatically stopped based on the determined code information and returned to the broadcast set before the emergency broadcast. The emergency broadcast automatically activated with the power off is automatically stopped based on the determined code information and returned to the standby state before the emergency broadcast.

  Also, if you want to receive an emergency broadcast signal of another broadcast during an emergency broadcast, determine the transmitted emergency broadcast signal in real time and automatically switch to another broadcast emergency broadcast based on the obtained code information It is set so that the latest information is always transmitted by switching.

DESCRIPTION OF SYMBOLS 1 ... Radio receiver for emergency broadcasts, 2 ... Speaker, 3 ... Display panel, 4 ... LED indicator, 5 ... Receive button, 6 ... Power button, 7 ... Tuning knob, 8 ... Volume adjusting knob, 9 ... LED light, 10 ... Generator, 20 ... Control unit, 21 ... Storage unit, 22 ... Receiving unit, 23 ... Signal processing section, 24 ... Amplification section, 25 ... Operation section, 26 ... LED display, 27 ... Panel display section

Claims (4)

  For emergency broadcasting, comprising: a receiving unit that receives a broadcast signal; a display unit that displays disaster information related to emergency broadcasting; and an output unit that outputs audio based on the received broadcast signal and the emergency broadcast signal included in the broadcast signal A radio receiver that stores a DTMF signal stored in the broadcast signal received by the receiver when a predetermined number of DTMF signals are detected within a predetermined time, and a signal processor that stores the DTMF signal. A code input processing unit for determining whether or not a predetermined number of pieces of code information match when code information comprising a predetermined number of combinations of DTMF signals is input a predetermined number of times, and a predetermined combination of DTMF signals in the code information The DTMF signal of the storage unit that stores the disaster information to be displayed corresponding to the code information and the code information that has been determined to match in the code input processing unit is predetermined. A code determination processing unit for determining whether the combination is a combination, a display processing unit for displaying disaster information corresponding to the combination on the display unit when the DTMF signal is determined to be a predetermined combination, and a DTMF signal An emergency broadcast radio receiver comprising: an output processing unit that outputs audio from the output unit when it is determined to be a predetermined combination.   2. The emergency broadcast radio receiver according to claim 1, wherein the code input processing unit determines whether a majority of the code information matches a predetermined number of input code information.   The code information includes a combination of DTMF signals related to specific information, the storage unit stores a predetermined combination of DTMF signals related to the specific information, and the code determination processing unit includes the specific information The radio receiver for emergency broadcasting according to claim 1 or 2, wherein control is performed so that emergency broadcasting is performed when a combination of DTMF signals relating to the same matches a stored predetermined combination.   The radio receiver for emergency broadcasting according to any one of claims 1 to 3, further comprising an operation processing unit configured to change a setting of a combination of DTMF signals of the stored code information.

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