JP6314780B2 - Emergency notification broadcast receiver - Google Patents

Description

  The present invention relates to an emergency notification broadcast receiving apparatus that automatically measures reception intensity of radio waves and receives an emergency notification broadcast without being conscious of the broadcast area.

  Conventionally, as a means of notifying disaster information, disaster prevention radio is applied in each municipality. However, in disaster prevention radio, there are places where the sound of the speaker does not reach, and it is impossible for everyone to listen to disaster information. To compensate for this, when an emergency notification broadcast, which is a broadcast that conveys information about disasters, is broadcast in the event of a disaster such as an earthquake or tsunami, it has a specific function that is installed in a receiver such as a radio or a television. There is a technique for automatically operating a receiver (for example, Patent Document 1).

  However, according to the method of Patent Document 1, there is a problem that in emergency notification broadcasting in which a plurality of frequencies exist for each municipality, disaster information cannot be received when the receiver is moved or moved to another municipality. . The means of transportation is by foot, car, train, ship, airplane, etc.

JP 2008-160789 A

  Therefore, an object of the present invention is to automatically measure the reception intensity of the frequency at which disaster information is broadcast for each region, and to let the operator select a frequency with a reception intensity equal to or higher than a certain value, or to receive the maximum reception intensity. The frequency is set as a broadcast reception frequency.

  In order to solve the above-described problems, the present invention is a broadcast receiving apparatus that receives any of a plurality of predetermined broadcast radio waves, and relates to a frequency of the plurality of broadcast radio waves, a broadcasting area, and a series of broadcasting stations. Broadcast information storage means for storing information in association with each other in advance, and a plurality of broadcast radio waves corresponding to all or some of the plurality of frequencies stored in the broadcast information storage means for sequentially receiving the received broadcast Received intensity measuring means for measuring the received intensity of each radio wave, received intensity measurement starting means for activating the received intensity measuring means regularly or irregularly, and information on the received intensity measured by the received intensity measuring means. A reception intensity presenting means for presenting to the operator; an operator frequency selecting means for causing an operator operating the own receiving apparatus to select one of the plurality of frequencies; and the plurality of frequencies. Receiving frequency setting means for setting any one as a broadcast receiving frequency, and the reception intensity measurement starting means determines whether or not a predetermined time has elapsed since the currently set broadcast receiving frequency is set. When the determination is made and it is determined that a predetermined time has elapsed, the reception intensity measurement unit is activated, and the reception intensity presentation unit is configured to determine a predetermined reception intensity of a broadcast radio wave at a currently set broadcast reception frequency. If the received signal strength is less than the received signal strength, the information about the received strength of the plurality of broadcast radio waves measured by the received signal strength measuring means is presented, and the received frequency setting means When an operation for selecting a frequency within a predetermined time is performed, the selected frequency is set as the broadcast reception frequency, and an operation for selecting a frequency within the predetermined time is performed. When it is not, among the plurality of broadcast waves which the reception intensity measuring means has measured, characterized in that it automatically sets the frequency of the highest reception intensity is high airwaves as a broadcast receiving frequency.

  According to the present invention, even if the receiver is moved, the reception intensity of the frequency at which disaster information is broadcast for each region is automatically measured, and the frequency with the maximum reception intensity is set as the broadcast reception frequency. Alternatively, it is possible to provide a receiving device that allows the operator to select a frequency having a reception intensity equal to or higher than a certain value.

It is a block block diagram in connection with the emergency notification broadcast receiver by this invention. It is a broadcast reception frequency table of the emergency notification broadcast receiving apparatus by this invention. 3 is an operation flowchart of the emergency notification broadcast receiving apparatus according to the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The emergency notification broadcast receiving apparatus according to the present invention may be abbreviated as this apparatus.

  FIG. 1 is a block diagram showing an emergency notification broadcast receiving apparatus 1 according to the present invention. The apparatus 1 includes a reception unit 2, a reception intensity presentation unit 3, an operation unit 4, a reception intensity measurement activation unit 5, a reception intensity measurement unit 6, a reception frequency setting unit 7, a broadcast information storage unit 8, an audio output unit 9, a control The unit 10 is configured.

  Here, the emergency notification broadcast is a broadcast of emergency information related to a disaster or the like by a local community radio station or the like. At the start / end of the emergency notification broadcast, the operator that performs the emergency notification broadcast transmits a DTMF signal for start / end, thereby starting or returning the standby receiver to the standby state. In addition to the DTMF signal, there are systems using natural sound as the start / end signal. The emergency notification broadcast signal includes disaster type information (earthquake, tsunami, storm and flood, etc.) and area selection information for providing emergency notification broadcasts in addition to disaster start / disaster information. . The information on the emergency notification broadcast can be changed arbitrarily by the operator who performs the emergency notification broadcast.

  The reception intensity measurement starting unit 5 is means for starting the reception intensity measurement unit 6. When a certain time has passed since the broadcast reception frequency was set (for example, 2 hours), or when the power is turned on, the reception intensity measurement unit 6 is activated.

Here, as a method for determining whether or not a certain period of time has passed, for example, the broadcast reception frequency is set in a memory (not shown) (for example, EE-PROM, FLASH-ROM or the like in which information is not lost even when the power is turned off). The time is stored, and the time set for the broadcast reception frequency stored in the memory when determining whether a certain time has elapsed may be compared with the current time using a real time clock (not shown).

  The reception intensity measurement unit 6 is activated when the control unit 10 receives from the reception intensity measurement activation unit 5 the timing at which the reception intensity measurement unit 6 is activated. The reception intensity of the frequency stored in the broadcast reception frequency table (described later in FIG. 2) of the broadcast information storage unit 8 is measured, and the measured reception intensity is updated.

  The broadcast information storage unit 8 stores a broadcast reception frequency table.

  The reception intensity presentation unit 3 is a display device that presents information related to a frequency having a reception intensity equal to or higher than a certain value measured by the reception intensity measurement unit 6 to the user using an LCD or the like.

  The operation unit 4 is an input device configured with buttons, a keyboard, a touch panel, and the like for operating the apparatus 1.

  The reception frequency setting unit 7 sets the selected frequency as a frequency to be received and is selected when the frequency presented by the reception intensity presentation unit 3 is selected within a certain time (for example, several minutes) from the operation unit 4. If not, a frequency having the strongest reception strength among frequencies having a reception strength of a certain value or more is set as a frequency to be received.

  The receiving unit 2 is means for receiving a predetermined broadcast frequency, and receives a frequency set by the receiving frequency setting unit 7 or a frequency specified by the reception intensity measuring unit 6.

  The sound output unit 9 outputs the sound having the reception frequency set by the reception frequency setting unit 7.

  The control unit 10 is a means for controlling the entire apparatus 1, and includes each unit and data of the receiving unit 2, the received strength presentation unit 3, the received strength measurement starting unit 5, the received strength measuring unit 6, and the received frequency setting unit 7. Give and receive control. For example, a predetermined frequency is received from the reception unit 2, a timing for starting the reception intensity measurement unit 6 is received from the reception intensity measurement activation unit 5, and the reception intensity measurement unit is activated.

  FIG. 2 is a diagram schematically showing an example of contents stored in the broadcast reception frequency table of the emergency notification broadcast receiving apparatus 1 according to the present invention. The broadcast reception frequency table 200 includes a column 201 indicating the frequency of a broadcast station for emergency notification broadcasting, a column 202 indicating information on a region where the frequency of the column 201 is used, and a broadcast station broadcasting in the region of the column 202. , A column 203 indicating the frequency set by the reception frequency setting unit 7, a column 205 indicating the reception intensity measured by the reception intensity measurement unit 6, and a reception intensity measured by the reception intensity measurement unit 6 Is composed of a column 206 indicating selectable frequencies having a reception intensity of a certain value or more, and is stored for each row 207.

  The broadcast reception frequency table 200 stores a column 201, a column 202, and a column 203 in advance. For example, the broadcasting stations with a frequency of 76.3 Mhz are A city and B city, the broadcasting stations of A city are ABC affiliated A community broadcasting stations, and the broadcasting station of B city is a DEF affiliated B community broadcasting station.

  FIG. 3 is an operation flowchart performed by the control unit 10 of the emergency notification broadcast receiving apparatus 1 according to the present invention. Hereinafter, this flowchart will be described with reference to FIGS. This flowchart starts with the power on.

  In S300, the control unit 10 activates the reception intensity measurement unit 6, and the reception intensity measurement unit 6 measures the reception intensities of all frequencies stored in the broadcast reception frequency table 200 and stores them in the broadcast information storage unit 8. . For example, the reception strength of 76.3 MHz is measured, and 40 dB is stored in the column 205 as the reception strength. Next, the reception strength of 78.2 MHz is measured, and 60 dB is stored (for example) in the column 205 as the reception strength. In this way, the reception intensity is measured and stored for all reception frequencies stored in the broadcast reception frequency table 200.

  In S301, the frequency with the received intensity stored in the column 205 of the broadcast reception frequency table 200 is stored in the column 206 as a selectable frequency. For example, marking (stores 1) is performed on the column 206 for 76.3 MHz, 78.2 MHz, and 90.0 MHz, which are frequencies with a reception intensity of 40 dB or more.

  In S <b> 302, the control unit 10 activates the reception strength presentation unit 6, and the reception strength presentation unit 6 displays the columns 201, 202, 203, and 205 marked in the column 206 of the broadcast reception frequency table 200. .

In S303, when the frequency presented from the reception strength presenting unit 3 is selected within a certain time (S303, YES), the selected frequency is set as the broadcast reception frequency and marked (stores 1) in the column 204. (S304). If it is not selected within a certain time (S303, NO), 78.2 MHz, which is the frequency with the highest reception intensity among the frequencies marked in the column 206, is set as the broadcast reception frequency (S305).

  In S306, the reception intensity measurement starting unit 5 determines whether or not a certain time (for example, 2 hours) has elapsed since the broadcast reception frequency is set, and if it is determined that the certain time has elapsed (S306, YES), Return to S300 and measure all frequencies again. When it is determined that the predetermined time has not elapsed (S306, No), the process proceeds to S307.

  In S307, the reception strength of the currently set broadcast reception frequency marked in the column 204 is measured, and the reception strength in the column 205 is updated.

  In S308, when the reception intensity updated in S307 is less than a certain value (for example, less than 40 dB) (S308, YES), the process proceeds to S309. If the received intensity is equal to or greater than a certain value (for example, 40 dB or more) (S308, NO), the process returns to S306, and S306 to S308 are repeated until a certain time (for example, 2 hours) elapses.

  In S309, the reception strengths of all frequencies stored in the column 206 are updated.

  In S310, when the reception strengths of the frequencies stored in the column 206 are all less than a certain value (for example, less than 40 dB) (S310, YES), the process returns to S300 and all frequencies are measured again. If all the reception strengths of the frequencies stored in the column 206 are not less than a certain value (for example, less than 40 dB) (S310, NO), the process returns to S302.

  The embodiment of the present invention has been described above. The present invention can be variously modified within the scope of the gist, and is not limited to the present embodiment.

  For example, only the reception strength of the currently set frequency is updated in S307, but considering that this device has changed, the reception strength of the frequency set as the selectable frequency in S309 is changed first. You may update to

  Further, even when the reception intensity of the frequency currently set in S308 is equal to or less than a certain value, or even when the frequency set as the selectable frequency in S310 includes a certain frequency or more, the reception intensity presenting unit 3 The user may be presented with an option of selecting from the selectable frequencies or re-measuring all frequencies, and returning to S300 according to the user's selection to measure all frequencies.

DESCRIPTION OF SYMBOLS 1 ... Emergency notification broadcast receiver 2 ... Reception part 3 ... Reception intensity presentation part 4 ... Operator part 5 ... Reception intensity measurement starting part 6 ... Reception intensity measurement part 7 ...・ Receiving frequency setting unit 8 ... Broadcast information storage unit 9 ... Audio output unit

Claims (2)

A broadcast receiving device that receives one of a plurality of predetermined broadcast radio waves,
Broadcast information storage means for preliminarily associating and storing information related to the frequency of the plurality of broadcast radio waves and the broadcasting area and broadcasting station series, and all or part of the plurality of frequencies stored in the broadcast information storage means Receiving intensity measurement means for sequentially receiving a plurality of broadcast radio waves corresponding to the frequency of the received signal and measuring the reception intensity of each of the received broadcast radio waves, and reception intensity measurement activation for periodically or irregularly activating the reception intensity measurement means Means, a reception intensity presenting means for presenting information related to the reception intensity measured by the reception intensity measuring means to the operator, and an operator for selecting one of the plurality of frequencies by an operator who operates the reception apparatus. A frequency selection means; and a reception frequency setting means for setting any one of the plurality of frequencies as a broadcast reception frequency,
The reception intensity measurement starting means determines whether or not a predetermined time has elapsed since the currently set broadcast reception frequency is set, and when it is determined that the predetermined time has elapsed, the reception intensity measurement means Start
The reception intensity presenting means is configured to receive a plurality of broadcast radio waves measured by the reception intensity measurement means when the reception intensity of the broadcast radio waves at the currently set broadcast reception frequency is less than a predetermined reception intensity. Present information about the received strength,
The reception frequency setting means sets the selected frequency as the broadcast reception frequency when an operation for selecting a frequency within a predetermined time is performed on the information presented by the reception intensity presentation means, When an operation for selecting a frequency is not performed within a predetermined time, the frequency of the broadcast radio wave having the strongest reception intensity among the plurality of broadcast radio waves measured by the reception intensity measuring means is automatically set as the broadcast reception frequency. An emergency notification broadcast receiver characterized by being set. The broadcast receiving device according to claim 1,
The broadcast broadcast receiving apparatus according to claim 1, wherein the broadcast radio wave is a broadcast radio wave for broadcasting emergency notification information.

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