JP6138516B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus, and more particularly to a broadcast receiving apparatus capable of receiving an emergency alert broadcast.

  In TV broadcasting, in the event of an emergency disaster such as an earthquake or tsunami, an emergency warning broadcasting system that sends emergency warning broadcasts and controls the television receiver side to receive emergency warning broadcasts for providing information related to emergency disasters have.

  As a television receiver that supports such an emergency warning broadcast issuing system, a circuit for receiving an emergency warning broadcast is operated even in a standby state (or “standby state”), and the emergency warning broadcast is received. When this happens, the power is turned on immediately and the broadcast reception state is entered. Thereby, even if the main power supply of the broadcast receiving apparatus is in an off state at the start of emergency warning broadcasting, it is possible to receive the broadcast.

  However, when receiving an emergency warning broadcast, there is a high possibility that it is after a disaster such as an earthquake, so if the broadcast receiving device overturns due to an earthquake and the broadcast receiving device itself is damaged If the automatic activation due to the reception of the emergency alert broadcast is activated, there is a risk of causing a secondary disaster such as a fire.

  For this reason, in Patent Document 1, in a television receiver that operates so as to be able to display the contents of an emergency alert broadcast in response to the reception of such an emergency alert broadcast, a disturbance (falling over) caused by an earthquake or the like Even if an emergency warning broadcast is received after that, if a fall of the television receiver is detected by the tilt sensor, control is performed so that at least the display drive power is not turned on thereafter. Is disclosed.

2006-31987

  In the television receiver disclosed in Patent Document 1, since the fall is caused by an earthquake and the emergency warning broadcast is received later, the power source for driving the display unit that becomes a relatively high voltage is not turned on. Even when the display drive unit or the like is damaged or destroyed, it is possible to reliably prevent the occurrence of electrical troubles such as smoke and fire.

  However, the television receiver disclosed in Patent Document 1 employs a method of determining a disturbance when there is an inclination of a certain angle or more from a predetermined reference posture. For this reason, when a user actually uses a television receiver, there are various installation cases such as inclining downward on the wall or mounting on the ceiling. There was a risk of judging that there was a disturbance. Furthermore, even though the television receiver actually falls, it may not be possible to detect the fall, and there is a possibility that the automatic activation due to the reception of the emergency warning broadcast may be activated.

  The present invention has been made in view of these circumstances, and by making it possible to accurately determine whether or not the broadcast receiving device has fallen down, a secondary disaster caused by automatic activation at the time of receiving an emergency warning broadcast is made. It is an object of the present invention to provide a broadcast receiving apparatus that can prevent the occurrence of the above.

  In order to solve the above-mentioned problem, a first technical means of the present invention is a broadcast receiving device including a display unit that displays broadcast contents of a received digital broadcast, and receives an emergency alert broadcast in the digital broadcast. A receiving unit that performs, an emergency alert broadcast determination unit that detects whether or not the receiving unit has received an emergency alert broadcast, a tilt sensor provided in the broadcast receiving device, and a detection result from the tilt sensor A fall determination unit that detects a fall of the broadcast receiving device, wherein the emergency alert broadcast determination unit detects reception of the emergency alert broadcast, and the fall determination unit detects a fall of the broadcast reception device. In the broadcast receiving device that displays the broadcast content of the emergency alert broadcast on the display unit when the user has not, the fall determination unit is set by the user as the reference value when measuring the inclination of the broadcast receiving device. It is obtained by and recording the value of the detection result from the tilt sensor measured when determining the installation position of view receiver.

  In the first technical means, when the registration of the initial setting information for the broadcast receiving device is completed, the second technical means displays a confirmation screen on the display unit for confirming the installation position for viewing the broadcast receiving device. It is characterized by that.

  According to a third technical means, in the second technical means, the initial setting information includes information indicating a use region of the broadcast receiving device and a digital broadcast providing the emergency warning broadcast in the use region of the broadcast receiving device. The channel frequency is characterized by

  According to a fourth technical means, in any one of the first to third technical means, when the fall determination unit determines that the broadcast receiving apparatus has fallen, the fourth technical means shifts to a standby state. .

  According to a fifth technical means, in any one of the first to fourth technical means, the reception unit, the emergency warning broadcast determination unit, the tilt sensor, and the fall determination unit are used as modules in the broadcast reception device. On the other hand, it is configured to be detachable.

  According to the present invention, it is possible to accurately determine the fall of the broadcast receiving apparatus on the basis of the installation position when the user views the broadcast receiving apparatus, and the secondary based on the damage of the broadcast receiving apparatus itself due to an earthquake or the like. Disasters can be prevented more accurately.

It is a block diagram which shows one structural example of the broadcast receiver which concerns on one Embodiment of this invention. It is a flowchart for demonstrating the procedure at the time of setting the reference value of an inclination sensor at the time of the initial setting information registration of the broadcast receiver shown in FIG. It is a figure which shows an example of the display screen in a display part. It is a figure which shows the other example of the display screen in a display part. It is a flowchart for demonstrating an example of the process at the time of receiving the emergency alert broadcast in the broadcast receiver shown in FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment according to a broadcast receiving apparatus of the invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a broadcast receiving apparatus according to an embodiment of the present invention.

  The broadcast receiving apparatus 1 includes a first receiving unit 11, a video signal processing unit 15, a display unit 16, a main controller 14, a first sub controller 17, a remote control receiving unit 18, a power supply circuit 19, and an emergency warning broadcast monitoring module 20. Yes.

  The first receiving unit 11 includes a tuner unit 12 that receives a digital broadcast signal of a channel selected based on an operation signal or the like from an antenna or the like, and a demodulation unit 13 that demodulates the digital broadcast signal received by the tuner unit 12. Have. The video signal processing unit 15 performs various signal conversion processes for displaying the video signal output from the first receiving unit 11 and separated by a separation unit (not shown) on the display unit 16. The display unit 16 includes a display composed of a liquid crystal panel and a drive circuit for driving the display, and displays the video input as video data from the video signal processing unit 15 on the display. Although not shown, the broadcast receiving apparatus 1 also includes an audio signal processing unit and a speaker for processing an audio signal demodulated and separated from the digital broadcast signal.

  The main controller 14 is configured as a microcomputer including a CPU, a ROM, a RAM, and the like, and directly or indirectly controls the entire broadcast receiving apparatus 1 such as the first receiving unit 11, the video signal processing unit 15, and the display unit 16. . The power supply circuit 19 converts an alternating current input from a commercial alternating current power supply (not shown) into a direct current, and supplies power to each unit in the broadcast receiving apparatus 1. Like the main controller 14, the first sub-controller 17 is configured as a microcomputer including a CPU, ROM, RAM, and the like, but mainly from various users input from a remote controller (not shown) via the remote control receiver 18. It can be adapted to the operation signal.

  For example, if the operation signal is a signal indicating channel switching, the first sub-controller 17 passes the signal to the main controller 14, and the main controller 14 is selected as a channel selection target for the tuner unit 12 according to the signal. Select a channel (also called frequency band or transmission channel). Further, the volume control operation signal is also sent from the first sub-controller 17 to the main controller 14 so that the audio signal processing unit adjusts the output of the speaker.

  The first sub-controller 17 is in charge of controlling the power supply circuit 19, and the first sub-controller 17 and the power supply circuit 19 constitute a power supply control unit. For example, when an operation signal indicating that the power is off is received, the power supply circuit 19 is instructed to turn off the power to supply power to all but the first sub-controller 17, the remote control receiver 18, and the emergency alarm broadcast monitoring module 20. The broadcast receiving apparatus 1 is shifted to a standby state (standby state). For this reason, the first sub-controller 17 is activated even when the broadcast receiving apparatus 1 is in a standby state.

  Further, when the first sub controller 17 receives a power-on operation signal when the broadcast receiving apparatus 1 is in the standby state, the first sub controller 17 instructs the power circuit 19 to turn on the main power. As a result, power is supplied to each part of the broadcast receiving apparatus 1 including the main controller 14, and the state shifts to an operation state in which an image is displayed on the display unit 16. In order to keep power consumption in the standby state small, it is desirable to use a first sub-controller 17 that consumes less power than the main controller 14.

  The emergency warning broadcast monitoring module 20 includes a second receiver 21, a tilt sensor 24, and a second sub controller 25. The second receiving unit 21 includes a tuner unit 22 and a demodulating unit 23 in the same manner as the first receiving unit 11, but the tuner unit 22 of the second receiving unit 21 is different from the tuner unit 12 of the first receiving unit 11. In contrast, the reception frequency is basically fixed to the frequency of a specific channel transmitting the emergency alert broadcast. For this reason, it is only necessary to have a configuration that can be set so as to receive only the frequency of the specific channel that transmits the emergency alert broadcast even when it corresponds to a plurality of channels. Also, unlike the demodulator 13, the demodulator 23 outputs only information that enables the second sub-controller 25 to detect the reception of an emergency warning broadcast, for example, TMCC and PMT described later, to the second sub-controller 25. Just keep it.

  In terrestrial digital broadcasting in Japan, the UHF (Ultra High Frequency) band of about 6 MHz (also referred to as a physical channel) is divided into 13 segments, of which 12 segments are used for fixed terminals such as television receivers. Broadcast is being carried out. The remaining one segment is implemented with a one-segment partial reception service (hereinafter also referred to as one-segment) for mobile phones and mobile terminals. In this one-segment partial reception service, when a video having a resolution of up to 320 × 240 pixels (QVGA: Quarter Video Graphics Array) is broadcast and the emergency warning broadcast is broadcast in one segment, the second receiver Reference numeral 21 can be configured as a receiving unit corresponding to one segment, which is a low-resolution receiving service.

  The inclination sensor 24 is a sensor that is attached to the broadcast receiving apparatus 1 and measures the inclination angle of the broadcast receiving apparatus 1 and is used to detect that the broadcast receiving apparatus 1 has fallen from the installation position. The inclination sensor 24 is preferably one that can measure the inclination of two orthogonal axes in consideration of the direction of the fall, and uses various types such as one that uses a magnet and a Hall element, one that measures the mass spring capacitance, and the like. Can be used.

  The second sub-controller 25 is configured as a microcomputer including a CPU, a ROM, a RAM, and the like, and includes an emergency warning broadcast determination unit 26 and a fall determination unit 27 as functional blocks. The emergency alert broadcast determination unit 26 receives information for enabling detection of the emergency alert broadcast from the second reception unit 21, determines whether the emergency alert broadcast is detected, and receives the emergency alert broadcast For example, an emergency warning broadcast signal “1” is transmitted to the first sub-controller 17.

  As a specific method for detecting an emergency alert broadcast, the second receiving unit 21 receives a broadcast on a preset channel, and acquires information identifying whether the broadcast is an emergency alert broadcast from the received broadcast wave. To do. In the current terrestrial digital broadcasting, as emergency warning broadcast identification information, an emergency information broadcast start flag for a TMCC (transmission multiplex control) signal and an emergency information descriptor in a PMT (Program Map Table) of PSI (Program Specific Information) There is. Then, the emergency alert broadcast determination unit 26 monitors the emergency alert broadcast flag multiplexed on the TMCC signal and first determines whether the flag is valid.

  Next, when the flag is valid, the emergency alert broadcast determination unit 26 analyzes the content of the emergency information descriptor described in the PMT included in the broadcast data of the emergency alert broadcast. As a result of the analysis, the emergency alert broadcast signal type and the area code indicating the alert target area are acquired. For example, the emergency information descriptor start_end_flag is “1”, and area_code is preset in the broadcast receiving apparatus. If it corresponds to a certain area code (for example, zip code, prefecture name, city name), the emergency alert broadcast determination unit 26 determines that an emergency alert broadcast has been detected.

The fall determination unit 27 stores the value of the detection result measured from the inclination sensor 24 as the reference value θ ₀ for fall determination when the user installs the broadcast receiving apparatus 1 and determines the installation position for viewing. Record in etc. Then, for example, it is determined that the broadcast receiving apparatus 1 has fallen when it is inclined at a predetermined angle, for example, 45 degrees, from the orientation of the reference value θ ₀ . When determining that the broadcast receiving device 1 has fallen, the second sub-controller 25 transmits, for example, a fall determination signal “1” to the first sub-controller 17. In addition, what is necessary is just to register into the fall determination part 27 beforehand as a default value about the magnitude | size of the predetermined angle for determining fall.

  Here, it is highly likely that the user determines the installation position for viewing the broadcast receiving apparatus 1 when the broadcast receiving apparatus 1 is first installed and initial setting information is registered. Therefore, in the present embodiment, at the end of the registration of the initial setting information, a confirmation screen for confirming the installation position for viewing of the broadcast receiving apparatus 1 is displayed on the display unit 16. Also, emergency alert to receive the broadcast, it is necessary to register or may be monitored which monitoring channels advance the emergency warning broadcast monitoring module 20. Therefore, as the initial setting information, after the information indicating the channel frequency of the digital broadcast providing emergency alert broadcast in the use area of the broadcast receiving device and the use area used for determination of detection of the emergency alert broadcast is registered, A confirmation screen is displayed.

  As described above, in this embodiment, as a basic configuration, the first sub-controller 17 and the emergency warning broadcast monitoring module 20 that are activated even in the standby state are provided separately from the main controller 14. In addition to receiving the operation signal from the user and the power key signal, the emergency warning broadcast is detected and the broadcast receiving device 1 is turned over.

  Next, a procedure for setting the reference value of the tilt sensor 24 will be described. FIG. 2 is a flowchart for explaining the procedure for setting the reference value of the tilt sensor when the initial setting information of the broadcast receiving apparatus shown in FIG. 1 is registered.

  When initial setting information of the broadcast receiving apparatus 1 is registered, power is supplied to each part of the broadcast receiving apparatus 1 including the main controller 14. When the user first uses the broadcast receiving apparatus 1, the user determines the installation position of the broadcast receiving apparatus 1 for viewing, and uses various initial setting information from an initial setting registration screen (not shown) using, for example, a remote control device. It is normal to register. As described above, the initial setting information includes a monitoring channel and area information for receiving an emergency alert broadcast. First, the main controller 14 monitors whether or not the initial setting information of the broadcast receiving apparatus 1 has been registered (step S1). If the registration is not performed, the main controller 14 continues monitoring.

  Next, when the initial setting information is registered, an installation position confirmation screen 30 is displayed on the display unit 16 to confirm to the user whether or not to view at the current installation position of the broadcast receiving apparatus, as shown in FIG. (Step S2). The installation position confirmation screen 30 displays, for example, a “Yes” button 32 and a “No” button 33 together with a display 31 such as “Do you view the TV at the current installation position?”, And also a “No” button 33. Is selected, a caution sentence 34 indicating that the fall monitoring function cannot be used is displayed.

  Note that the monitoring channel and area information for receiving the emergency alert broadcast as the initial setting information are registered in the second sub-controller 25 and also stored in the main controller 14. After the monitoring channel and the area information for receiving the emergency alert broadcast are registered, the second sub-controller 25 receives the digital broadcast of the monitoring channel in which the tuner unit 22 of the second receiving unit 21 is registered. Thus, the emergency alert broadcast monitoring module 20 enters an emergency alert broadcast reception mode for detecting reception of an emergency alert broadcast.

Next, the main controller 14 determines whether or not the installation position has been determined (step S2). If the installation position has been determined, that is, if the “Yes” button 32 on the installation position confirmation screen 30 has been selected. The current measured output value from the tilt sensor 24, that is, the value of the detection result measured by the tilt sensor 24 when the “Yes” button is selected is the reference value θ ₀ when measuring the tilt of the broadcast receiving apparatus 1. Is recorded in the second sub-controller 25 (step S4). Subsequent to step S4, the emergency warning broadcast monitoring module 20 enters a fall monitoring mode for detecting the fall of the broadcast receiving apparatus 1 (step S5).

  If the installation position is not determined in step S3, that is, if the “No” button 33 on the installation position confirmation screen 30 is selected, or even after a predetermined time has elapsed, the “Yes” button 32 or “No”. If the button 33 is not selected, a screen 40 for requesting input of setting position determination is displayed again on the display unit 16 when the installation position of the broadcast receiving apparatus is determined as shown in FIG. 4 (step S6). On the screen 40, a display 41 such as "If the installation position for viewing the television is determined, please determine it on the installation position confirmation screen" is displayed. Subsequent to step S6, the emergency alert broadcast monitoring module 20 ends the process without entering the fall monitoring mode for detecting the fall of the broadcast receiving apparatus 1 (step S7).

  Next, processing of the broadcast receiving apparatus 1 during normal use when the emergency alert broadcast monitoring module 20 enters the emergency alert broadcast monitoring mode and the fall monitoring mode will be described. FIG. 5 is a flowchart for explaining an example of processing when an emergency warning broadcast is received in the broadcast receiving apparatus shown in FIG.

  First, regardless of the supply of power to the main controller 14, the first sub-controller 17 and the emergency warning broadcast monitoring module 20 are activated, the broadcast receiving device 1 has not fallen down, and the emergency warning broadcast is not performed. Suppose that it is not broadcast. In this case, the emergency warning broadcast monitoring module 20 transmits a fall determination signal “0” to the first sub-controller 17 (step S11) and transmits an emergency warning broadcast reception signal “0” (step S11). S12). This can be realized by holding the potentials of the fall detection signal line and the emergency warning broadcast reception signal line connecting the second sub controller 25 and the first sub controller 17 at low level “0”.

  Next, it is determined whether or not the emergency alert broadcast determination unit 26 of the emergency alert broadcast monitoring module 20 has detected reception of the emergency alert broadcast (step S13). Whether or not the emergency alert broadcast has been received is described in the PMT included in the broadcast data, as described above, the emergency alert broadcast activation flag of the TMCC signal acquired from the second receiver 21 is valid. This determination can be made based on whether or not the start_end_flag of the emergency information descriptor is “1” and the area_code corresponds to an area code set in advance in the broadcast receiving apparatus 1.

Next, when the reception of the emergency warning broadcast is not detected (in the case of “NO” in Step S13), the second sub-controller 25 determines whether or not the fall determination unit 27 has detected the fall of the broadcast receiving device 1. Determination is made (step S14). The fall detection unit 27 detects the fall of the broadcast receiving apparatus 1 when the measurement result from the tilt sensor 24 exceeds a predetermined value from the reference value θ ₀ , for example, exceeds the range of θ ₀ ± 45 degrees. In this case, it is determined that the broadcast receiving apparatus 1 has fallen. When the fall determination unit 27 does not detect the fall of the broadcast receiving apparatus 1 in step S14, the process returns to step S13 and the subsequent processes are continued. In this case, the fall determination signal and the emergency warning broadcast reception signal for the first sub-controller 17 are maintained at the low level “0”.

  When the fall determination unit 27 detects the fall of the broadcast receiving apparatus 1 in step S <b> 14, the second sub controller 25 transmits a fall determination signal “1” to the first sub controller 17. This can be realized by holding the potential of the overturn determination signal line at a high level “1”. Next, the first sub-controller 17 detects that the fall determination signal is “1”, and determines whether or not the broadcast receiving apparatus 1 is in a standby state (step S16). When the broadcast receiving apparatus 1 is not in a standby state, that is, when power is supplied to the main controller 14 or the like and an image is displayed on the display unit 16, the first sub controller 17 is in a standby state. The power supply circuit 19 is controlled. If the broadcast receiving apparatus 1 is in the standby state in step S16, the standby state is maintained and the process is terminated.

  Returning to step S13, when the reception of the emergency alert broadcast is detected (in the case of “YES”), the second sub-controller 25 determines whether or not the fall determination unit 27 detects the fall of the broadcast receiving apparatus 1 (step S13). S18). When the fall determination unit 27 detects the fall of the broadcast receiving apparatus 1 in step S18, the process proceeds to step S15 and the subsequent processing is continued. Thereby, even when the emergency alert broadcast is received, when the broadcast receiving apparatus 1 is overturned, the broadcast receiving apparatus 1 is maintained in a standby state, and therefore the broadcast receiving apparatus 1 is turned on. It is possible to prevent secondary disasters such as fire due to automatic startup.

  Next, when the fall determination unit 27 does not detect the fall of the broadcast receiving device 1 in step S18, the second sub-controller 25 transmits the emergency alert broadcast reception signal “1” to the first sub-controller 17 ( Step S19). This can be realized by holding the potential of the emergency alert broadcast reception signal line at a high level “1”. The first sub-controller 17 detects that the emergency alert broadcast reception signal has become “1”, and determines whether or not the broadcast receiving device 1 is in a standby state (step S20).

  When the broadcast receiving apparatus 1 is in the standby state, the first sub-controller 17 controls the power supply circuit 19 to turn on the main power supply to the main controller 14 and the like (step S21), and then proceeds to step S22. As a result, the main controller 14 is activated and the broadcast content of the digital broadcast received by the first receiving unit 11 is displayed on the display unit 16. When the broadcast receiving apparatus 1 is not in the standby state in step S20, that is, the main controller 14 is activated, and the broadcast content of the digital broadcast received by the first receiving unit 11 is displayed on the display unit 16. If so, the process proceeds to step S22.

  In step S22, the main controller 14 determines whether or not the tuner unit 12 of the first receiving unit 11 has received a digital broadcast of a monitoring channel that transmits a pre-registered emergency alert broadcast. When the emergency alert broadcast is not received (in the case of “NO”), the main controller 14 controls the tuner unit 12 to select the channel of the emergency alert broadcast, and the display unit 16 is urgently notified. The broadcast content of the alarm broadcast is displayed (step S23). The channel providing the emergency alert broadcast is also recorded in the main controller 14 when the initial setting information described above is registered. In addition, when the emergency alert broadcast is received in step S22 (in the case of “YES”), the state is maintained.

  Thus, when the emergency alert broadcast determination unit 26 detects that the emergency alert broadcast has been received, if the fall determination unit 27 has not detected the fall of the broadcast receiving device 1, the broadcast content of the emergency alert broadcast is displayed. Displayed on the part 16.

  In the embodiment of the present invention described above, the fall determination signal and the emergency warning broadcast reception signal are transmitted from the second sub controller 25 to the first sub controller 17 in the lines of the fall determination signal and the emergency warning broadcast reception signal. The potential is changed by switching between a low level “0” and a high level “1”. However, the potential is not limited to this, and a predetermined code signal is transmitted from the second sub controller 25 to the first sub controller 17. May be.

  Further, in the above embodiment, even when the second sub-controller 25 detects the reception of the emergency warning broadcast, when the fall of the broadcast receiving apparatus 1 is detected, the emergency warning broadcast reception signal is set to “0”. "I keep it as it is. However, when the emergency alert broadcast determination unit 26 detects reception of the emergency alert broadcast, the emergency alert broadcast reception signal “1” may be transmitted to the first sub-controller 17 regardless of the detection of the fall. In this case, the first sub-controller 17 determines whether or not to set the broadcast receiving apparatus 1 to the standby state according to the state of the combination of the fall determination signal and the emergency warning broadcast reception signal.

  Further, the second sub controller 25 may be omitted by performing the processing of the second sub controller 25 by the first sub controller 17. Further, the emergency alert broadcast monitoring module 20 may be configured to be detachably attached to the broadcast receiving apparatus 1.

  As described above, the broadcast receiving apparatus according to the present invention is a broadcast receiving apparatus that includes a display unit that displays broadcast contents of a received digital broadcast, and that receives an emergency alert broadcast in the digital broadcast. An emergency warning broadcast determination unit that detects whether or not the reception unit has received an emergency warning broadcast, a tilt sensor provided in the broadcast receiver, and the broadcast reception based on a detection result from the tilt sensor A fall determination unit that detects a fall of the device, wherein the emergency alert broadcast determination unit detects reception of the emergency alert broadcast, and the fall determination unit does not detect a fall of the broadcast receiving device In addition, in the broadcast receiving device that displays the broadcast content of the emergency alert broadcast on the display unit, the fall determination unit is configured to allow the user to receive the broadcast as a reference value when measuring the inclination of the broadcast receiving device. It is obtained by and recording the value of the detection result from the tilt sensor measured when determining the installation position of view device. As a result, it is possible to accurately determine whether the broadcast receiving device has fallen on the basis of the installation position when the user views the broadcast receiving device, and to prevent a secondary disaster based on the damage of the broadcast receiving device itself due to an earthquake or the like. Can be prevented accurately.

  The broadcast receiving apparatus according to the present invention displays a confirmation screen on the display unit for confirming a setting position for viewing the broadcast receiving apparatus to a user when registration of initial setting information to the broadcast receiving apparatus is completed. It is said. Thereby, when the user uses the broadcast receiving apparatus 1 for the first time, an accurate reference value of the tilt sensor can be set reliably.

  The initial setting information may be information indicating a use area of the broadcast receiving apparatus and a channel frequency of a digital broadcast providing the emergency alert broadcast in the use area of the broadcast receiving apparatus. . As a result, it is possible to reliably detect the reception of the emergency alert broadcast in the area where the broadcast receiving apparatus is used.

  The broadcast receiving apparatus according to the present invention is characterized in that when the fall determination unit determines that the broadcast reception apparatus has fallen, the broadcast reception apparatus shifts to a standby state. Thereby, even if it is a case where an emergency alert broadcast is not received, when a broadcast receiver falls down, a broadcast receiver can be maintained in a standby state.

  Furthermore, the receiving unit, the emergency warning broadcast determining unit, the tilt sensor, and the fall determining unit are configured as modules so as to be detachable from the broadcast receiving device. This makes it possible to add these functions to a broadcast receiver that does not have an emergency warning broadcast determination function or a fall determination function.

DESCRIPTION OF SYMBOLS 1 ... Broadcast receiving apparatus, 11 ... 1st receiving part, 12 ... Tuner part, 13 ... Demodulation part, 14 ... Main controller, 15 ... Video signal processing part, 16 ... Display part, 17 ... 1st sub-controller, 18 ... Remote control Receiving unit, 19 ... power supply circuit, 20 ... emergency warning broadcast monitoring module, 21 ... second receiving unit, 22 ... tuner unit, 23 ... demodulating unit, 24 ... tilt sensor. 25 ... 2nd sub controller, 26 ... Emergency warning broadcast determination part, 27 ... Fall determination part, 30 ... Installation position confirmation screen, 40 ... Screen.

Claims (5)

A broadcast receiving device comprising a display unit for displaying the broadcast content of a received digital broadcast,
A receiver for receiving an emergency alert broadcast in the digital broadcast;
An emergency alert broadcast determination unit that detects whether the receiver has received an emergency alert broadcast; and
A tilt sensor provided in the broadcast receiver;
A fall determination unit that detects a fall of the broadcast receiving device based on a detection result from the tilt sensor;
When the emergency warning broadcast determination unit detects the reception of the emergency warning broadcast and the fall determination unit does not detect the fall of the broadcast receiving device, the broadcast content of the emergency warning broadcast is displayed on the display unit. In the broadcast receiving device to display,
The fall determination unit uses a value of a detection result from the tilt sensor measured when a user determines an installation position for viewing the broadcast receiving device as a reference value for measuring the tilt of the broadcast receiving device. A broadcast receiving apparatus for recording.   2. The broadcast receiving apparatus according to claim 1, wherein when the registration of the initial setting information with respect to the broadcast receiving apparatus is completed, a confirmation screen for confirming an installation position for viewing the broadcast receiving apparatus is displayed on the display unit. .   The initial setting information is information indicating a use area of the broadcast receiving apparatus and a channel frequency of a digital broadcast providing the emergency warning broadcast in the use area of the broadcast receiving apparatus. 2. The broadcast receiving apparatus according to 2.   The broadcast receiving apparatus according to any one of claims 1 to 3, wherein when the fall determination unit determines that the broadcast reception apparatus has fallen, the fall determination unit shifts to a standby state.   5. The receiver according to claim 1, wherein the receiver, the emergency warning broadcast determination unit, the tilt sensor, and the fall determination unit are configured to be detachable from the broadcast receiver. The broadcast receiving apparatus according to 1.

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