JP2009232363A - Television receiver and broadcasting transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver and broadcast transmitter, for reducing power consumption, when there is fire. <P>SOLUTION: The television receiver is provided with: a broadcast wave receiving means 13 for receiving broadcasting means for detecting a warning signal, reporting an emergency warning broadcast, contained in the broadcast wave received by the broadcast wave receiving means 13; a power supply means 32 for supplying power to a display with the detection of the warning signal due to a signal-detecting means 12; a display means 24 for displaying the emergency warning broadcast on the display by the signal-detecting means 12, to which the power is supplied by the power supplying means, when the warning signal is detected by the signal detecting means 12; and a network communication means 35 which transmits a command for powering-off to an external device, over a network with the detection of the warning signal due to the signal detecting means 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a television receiver and a broadcast transmitter.

  In recent years, when a disaster such as an earthquake or a typhoon occurs, an emergency alert broadcast is transmitted at a digital television broadcasting station, and an emergency alert signal for notifying the emergency alert broadcast is transmitted. A digital television receiver capable of receiving such emergency alert broadcasts and emergency alert signals is equipped with a function for selecting an emergency alert broadcast program upon detection of the emergency alert signal.

  Among such digital television receivers, there is a digital television receiver having a function of reducing power consumption and enabling reception of emergency warning broadcasts.

For example, in Patent Document 1, information indicating that emergency broadcasting has been started is detected by the demodulation unit with the power supply of the configuration excluding a part of the configuration including the demodulation unit in the entire receiver turned off. Accordingly, a receiving apparatus is disclosed that can automatically receive an emergency broadcast without any user operation while suppressing power consumption by turning on the entire power supply accordingly.
JP 2007-243383 A

However, the apparatus disclosed in Patent Document 1 does not consider reducing power consumption when a disaster occurs.
When an emergency warning broadcast program is broadcast from a disaster area broadcast station in the event of a disaster, electrical devices such as digital television receivers installed in each household in the disaster area can receive power all at once. It is expected to enter. Therefore, when a disaster occurs, the power load due to the start-up process of these electric devices is concentrated, and there is a possibility that the power supply from the power distribution facility becomes insufficient.

  Therefore, an object of the present invention is to provide a television receiver and a broadcast transmitter that can reduce power consumption when a disaster occurs.

  To achieve the above object, the present invention provides a broadcast wave receiving means for receiving a broadcast wave from a broadcast station, and an alarm signal for notifying an emergency warning broadcast included in the broadcast wave received by the broadcast wave receiving means. A signal detection means for detecting; a power supply means for supplying power to the display display in accordance with the detection of the alarm signal by the signal detection means; and a power supply means for detecting the alarm signal by the signal detection means. Display means for displaying the emergency alert broadcast on the display display, and network communication means for transmitting a command to turn off the power to an external device via the network upon detection of the alarm signal by the signal detection means. It is characterized by providing.

  ADVANTAGE OF THE INVENTION According to this invention, the television receiver and broadcast transmitter which can reduce the power consumption at the time of disaster occurrence can be provided.

The communication apparatus of the present invention will be described below with reference to the drawings.
First, the configuration of a television receiver according to an embodiment of the present invention will be described with reference to FIG. The television receiver of the present embodiment receives, for example, terrestrial digital broadcasting from the broadcasting station 1 and supplies power to other electric devices such as the air conditioner 200, the heater 300, the rice cooker 400, and the refrigerator 500. This is realized by the digital television receiver 100 capable of network connection with the power supply control unit 150 to be controlled.

  This digital television receiver 100 has a function corresponding to an emergency warning system (EWS) as an emergency warning signal transmitted from a broadcasting station in the event of an emergency disaster such as an earthquake or tsunami. There is a function to select and receive warning broadcasts.

  In addition, the digital television receiver 100 has a function of turning on the display after waiting for a predetermined time from the detection of the emergency warning signal and displaying the emergency warning broadcast on the display, and other electric devices along with the detection of the emergency warning signal. Has a function of transmitting a power-off command to turn off the power to the power management unit 150 connected to the main power 170.

By providing these functions, the digital television receiver 100 of the present embodiment realizes a reduction in power consumption when a disaster occurs.
In this embodiment, the power supply to other electrical devices is controlled by transmitting a command to the power supply unit 150 connected to the main power supply 170. For example, LAN or HDMI (High-Definition Multimedia Interface)- A network connection by CEC (Consumer Electronics Control) or the like is performed, and a power ON / OFF process may be executed by transmitting a control signal to each electric device.

  Next, the system configuration of the digital television receiver 100 of the present embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing the internal configuration of the digital television receiver 100 as an embodiment of the present invention.

The digital television receiver 100 corresponds to terrestrial digital broadcasting, and includes a receiving unit 10, an output processing unit 20, a power control unit 30, and the like.
The receiving unit 10 constitutes an example of a receiving unit, receives an emergency alert signal, and selects an emergency alert broadcast. The receiving unit 10 includes, for example, a tuner unit 11 and a notification signal detection unit 12.

  The tuner unit 11 is connected to the antenna 13 and selects and receives a digital broadcast program transmitted from the broadcast station 1 and an emergency warning broadcast when a disaster occurs. For example, a broadcast signal by terrestrial digital broadcasting is received by the antenna 13, converted into a predetermined high-frequency signal by a built-in converter (not shown), and supplied to the tuner unit 11.

  The tuner unit 11 selects and receives a carrier (reception frequency) based on a control signal from the control unit 31. In addition, the tuner unit 11 obtains a transport stream (TS) by performing demodulation processing, error correction processing, and the like on the carrier specified by the control signal.

  Here, the transport stream according to the digital broadcasting standard is a combination of compressed data obtained by compressing video signals and audio signals of a plurality of broadcast programs and various additional information, for example, according to MPEG2 (Moving Picture Experts Group Layer 2) system. Has been. Further, as additional information inserted by the broadcasting station 1, program specific information (PSI: Program Specific Information) storing a table such as PAT (Program Association Table), PMT (Program Map Table), and the like can be cited.

  The multiplexing of each information is performed, for example, by forming a transport stream with 188-byte transport stream packets (hereinafter referred to as TS packets) and storing various additional information in the TS packets.

  The notification signal detection unit 12 is connected to the tuner unit 11 and detects an emergency alert signal transmitted from the broadcast station 1 in the emergency alert broadcast issuing system. For example, when an emergency alert broadcast is broadcast, the broadcast station 1 transmits an emergency alert signal (hereinafter referred to as an EWS signal) via a dedicated subchannel. In the digital television receiver 100, the receiver 10 transmits this emergency alert signal. Check the subchannel and detect the EWS signal.

  In the notification signal detection unit 12 of the present embodiment, for example, the start bit value of the transmission control signal (TMCC: Transmission and Multiplexing Configuration and Control) included in the program identification information acquired by the tuner unit 11 is referred to, and the value is predetermined. The EWS signal is detected by determining whether or not the value is a value. Further, the notification signal detection unit 12 outputs an EWS detection notification to the control unit 31 when detecting the EWS signal.

  In the digital television receiver 100, a separate power supply (not shown) is supplied to the receiving unit 10 so that a sub-channel notification signal can be detected even when the power is off. It is assumed that the unit 12 can always detect the EWS signal.

  The output processing unit 20 outputs the emergency alert broadcast selected by the receiving unit 10. The output processing unit 20 includes, for example, a demultiplexing unit 21, an audio decoder 22, a speaker 23, a video decoder 24, an LCD (Liquid Crystal Display) 25, and the like.

  The demultiplexing unit 21 separates specific TS packets from the transport stream. As a result, the demultiplexing unit 21 acquires video data and audio data for a specific broadcast program. Further, the demultiplexing unit 21 acquires program specifying information under the command of the control unit 31.

  The audio decoder 22 decodes audio data for the specific broadcast program separated and acquired by the demultiplex unit 21 and outputs the decoded audio data to the speaker 23. The video decoder 24 decodes video data for the specific broadcast program separated and acquired by the demultiplexing unit 21 and outputs it to the LCD 25.

  The power supply control unit 30 controls the power supplied to the output processing unit 20 when the reception unit 10 detects the EWS signal. The power control unit 30 includes a control unit 31, a power supply unit 32, a database 33, and the like.

  When the control unit 31 receives the EWS signal detection notification from the notification signal detection unit 12 in a state where the power supply to the output processing unit 20 is off, the control unit 31 outputs a command to the power supply unit 32 to output the output processing unit 20. Power is supplied to the tuner unit 11 and a control signal is output to the tuner unit 11 to execute emergency alert broadcast tuning.

  In addition, the control unit 31 in this embodiment has a function of waiting for the power supply unit 32 to supply power to the output processing unit 20 until the standby time has elapsed since the reception of the EWS signal detection notification. In this embodiment, the standby time is set by input from the user, or is set based on information included in the broadcast wave from the broadcast station 1. Information included in the broadcast wave from the broadcast station 1 will be described later with reference to FIG.

  In addition, the control unit 31 transmits a command to turn off the power of the other electric devices to the power supply unit 150 with the detection of the EWS signal. Furthermore, the control unit 31 transmits a power-on command to turn on the power of another electrical device that has been turned off to the power management unit 150 as a predetermined time elapses from the transmission of the power-off command.

  In this embodiment, even during the waiting time, an emergency warning broadcast is made to the user by turning on an LED (not shown) provided in the digital television receiver 100, for example. You may be able to show that it is broadcast.

  The power supply unit 32 receives a command from the control unit 31 and applies a voltage to the output processing unit 20. The database 33 stores and manages information related to the standby time, the electric device to be transmitted with the power-off command, and the like input from the interface unit 34. This management format will be described later with reference to FIG.

The interface unit 34 includes an operation key for receiving an operation input from a user, an infrared receiving unit for receiving a command from a remote controller, and the like.
The network communication unit 35 is connected to the power management unit 150 via a LAN, HDMI-CEC, or the like. In addition, the network communication unit 35 transmits the power-off command and the power-on command from the control unit 31 to the power management unit 150.

  Next, with reference to FIG. 3, the management format of the information regarding the other electric equipment stored in the database 33 in the present embodiment will be described. FIG. 3 is a table for managing information related to other electrical devices stored in the database 33 of this embodiment.

  In this embodiment, for example, for other electrical equipment connected to the power management unit 150, setting whether or not to stop the power supply by turning off the power in the event of a disaster, and once turning off the power supply and turning on the power again. You can set the time until it is raised again. It should be noted that, here, “○” is written in the column of the setting for turning off the power when a disaster occurs, for an electrical device that turns off the power when a disaster occurs.

  In FIG. 3, the example which set the air conditioner 200, the heater 300, the rice cooker 400, etc. as an electric equipment which turns off a power supply at the time of disaster occurrence is shown. The power supply to these electric devices is stopped by the power management unit 150 in response to a power off command transmitted when the digital television receiver 100 detects an EWS signal.

  In these electric devices, a time until the power is turned on again after the power is turned off by the power management unit 150 is set. For example, as shown in FIG. 3, the air conditioner 200, the heater 300, and the rice cooker 400 are set with a time of 2 hours, 3 hours, and 30 minutes, respectively, as the time until the power is turned on again. For example, in the air conditioner 200, when the digital television receiver 100 detects an EWS signal, the power supply unit 150 turns off the power once, but restarts after two hours.

  The digital television receiver 100 refers to the database 33 after transmitting the power-off command, and reads the time until the power is turned on again in each electric device. Then, after the elapse of the time from the transmission of the power-off command, a power-on command for re-powering each electric device is transmitted.

  As described above, in this embodiment, in another electrical device connected to the power supply control unit 150, it is possible to set a target device to stop power supply and a time to stop power supply when a disaster occurs.

  Next, with reference to FIG. 4, a power control method by the power control unit 150 in the present embodiment will be described. FIG. 4 shows an example of the internal configuration of the power supply control unit 150 in this embodiment.

  The power management unit 150 includes, for example, a reception unit 151 that receives a command from the digital television receiver 100, a command analysis unit 152 that analyzes a command received by the reception unit 151, and a power supply line from the main power supply 170 to each electrical device. And a switch unit 153 that opens and closes.

The receiving unit 151 receives the power-off command and the power-on command, and outputs each command to the command analysis unit 152.
The command analysis unit 152 analyzes the command received by the reception unit 151, and is specified to the switch unit 152 by a power supply line OFF request to each electric device specified by the power OFF command or by a power ON command. Outputs a power supply line ON request to each electrical device.

The switch unit 153 executes switching on and off of the power supply line to the designated electrical device in response to the line on request or the line off request from the command analysis unit 152.
As described above, in this embodiment, it is possible to control power supply to each electrical device connected to the power supply control unit 150.
In addition, the digital television receiver 100 according to the present embodiment has a function of turning on the display after waiting for a predetermined time from the detection of the emergency warning signal and displaying the emergency warning broadcast on the display. The standby time may be a time set by user input, or may be a time specified by information written from the broadcast station 1 to the emergency indicator in the PMT. Below, with reference to FIG.5 and FIG.6, the structure of the broadcast station 1 in a present Example and the standby time designation | designated method by the broadcast station 1 are demonstrated.

  FIG. 5 is a diagram schematically showing the configuration of the broadcast station 1 in the present embodiment. FIG. 6 is a diagram showing a standby time designation method using an emergency indicator in the PMT in the present embodiment. The broadcasting station 1 of this embodiment includes, for example, a broadcast program data input unit 601 that inputs video data and audio data to be broadcast as broadcast waves, an encoder 602 that encodes the input video data and audio data, and an EWS signal. The program specifying information generating unit 603 for generating the program specifying information including the multiplexer 604 for multiplexing the encoded broadcast data and the program specifying information, the transmitting unit 605 for transmitting the broadcast wave, and the like.

  In the broadcasting station 1 of the present embodiment, for example, when an emergency warning broadcast program at the time of a disaster is broadcast, the amount of information to be transmitted by compressing and encoding video data and audio data constituting the emergency warning broadcast program by the encoder 602 The multiplexer 604 multiplexes the program specific information into the compression-encoded broadcast program and transmits it.

  In the broadcasting station 1 of the present embodiment, for example, in consideration of the scale of the disaster and the area where the disaster occurred, standby time designation information for distributing the insertion time in the electrical equipment that is capable of receiving emergency alert broadcasts within the program specific information The function to write is provided. As a result, it is possible to avoid turning on all the electric devices for receiving emergency alert broadcasts in each household in the disaster area all at once, and to reduce power load concentration on distribution facilities such as substations.

  In the program specific information generation unit 602 of the present embodiment, for example, standby time designation information is written using an emergency indicator in the PMT. As shown in FIG. 6, the emergency information element in the PMT includes a service area (Service ID) 610 and an area code (Area Code) 620, and a reserved area 610 a in which 6-bit information is not written, 4 bits, respectively. There is a reserved area 620b in which no information is written.

  In this embodiment, waiting time designation information is written in these areas. For example, the program specifying information generating unit 602 writes information specifying a standby time together with a unique ID number of a B-CAS card that can specify a receiver that receives a broadcast wave.

  As described above, in this embodiment, the standby time from the broadcasting station 1 side until the restart of the electric device corresponding to the emergency warning broadcast reception is set, and it is possible to prevent the electric devices from being turned on at the same time when a disaster occurs.

  Next, with reference to FIG. 7, the flow at the time of emergency alert broadcast reception in the digital television receiver 100 of the present embodiment will be described. FIG. 7 is a flowchart showing a flow when the emergency alarm broadcast is received in the digital television receiver 100 of the present embodiment.

  In the digital television receiver 100, the receiving unit 10 is checked for a subchannel of the broadcast wave (S101), and it is confirmed whether an EWS signal has been detected (S102). When the EWS signal is not detected (No in S102), the digital television receiver 100 returns the process to S101.

  When an EWS signal is detected (Yes in S102), the digital television receiver 100, in another electrical device connected to the power management unit 150, and a target device to stop power supply when a disaster occurs and a time to stop power supply Information on (time until restart) is read from the database 33 (S113). If an electric device that turns off power when a disaster occurs is set, the digital television receiver 100 transmits a power off command to turn off the electric device to the power management unit 150 (S114).

  Next, the digital television receiver 100 checks whether or not the output processing unit 20 is turned on (S105). When the output processing unit 20 is turned on (Yes in S105), the digital television receiver 100 selects an emergency alert broadcast (S109) and causes the LCD 25 to display the broadcast program.

  When it is confirmed in S105 that the power of the output processing unit 20 is not turned on (No in S105), the digital television receiver 100 reads the program identification information included in the broadcast wave and supplies power from the broadcasting station 1 to the output processing unit 20. The information about the waiting time until supply is extracted (S106).

  Next, the digital television receiver 100 checks whether or not a standby time until the power is supplied to the output processing unit 20 has elapsed and whether the power of the output processing unit 20 is turned off (S107). When the standby time has elapsed and the power of the output processing unit 20 is off (Yes in S107), the digital television receiver 100 turns on the power of the output processing unit 20 (S108) and selects the emergency alert broadcast. (S109).

  If the standby time has not elapsed in S107, or if the power of the output processing unit 20 is turned on (No in S107), the digital television receiver 100 has restarted the external electrical device. It is confirmed whether or not (S110). If the restart time has not elapsed (No in S110), the digital television receiver 100 returns the process to S107. If the restart time has elapsed (Yes in S110), the digital television receiver 100 turns on the target device for which the restart time is set and restarts (S111).

  When the processing up to S111 is performed, the digital television receiver 100 has completed the restart of all the electric devices that are turned on when the output processing unit 20 is turned on and are set to be turned off when a disaster is read out in S103. (S112). When the power of the output processing unit 20 is not turned on, or when the restart has not been completed for the electric device set to turn off all the power (No in S112), the digital television receiver 100 moves the process to S107. return.

  Then, when all the restarts of the electric devices for which the output processing unit is turned on and are set to be turned off are finished (Yes in S112), the digital television receiver 100 finishes the process.

As described above, according to this embodiment, it is possible to provide a television receiver and a broadcast transmitter that can reduce power consumption when a disaster occurs.
The digital television receiver 100 of this embodiment turns on the display after waiting for a predetermined time from the detection of the emergency warning signal, and displays the emergency warning broadcast on the display. Also, a command to turn off the power of other electrical devices is transmitted with the detection of the emergency warning signal. As a result, it is possible to avoid turning on all the electric devices for receiving emergency alert broadcasts at the homes in the disaster area all at once, and to reduce power load concentration on distribution facilities such as substations.

  In this embodiment, for the electrical equipment connected to the power management unit 150, setting whether or not to stop the power supply by turning off the power in the event of a disaster, and the time from when the power supply is stopped to when it is restarted Can be set about.

  In addition, in the broadcasting station of the present embodiment, the function of writing standby time designation information for distributing the putting time in the electric equipment compatible with emergency alert broadcasting into the program specific information in consideration of the scale of the disaster and the region where the disaster occurred. Is provided. As a result, it is possible to avoid turning on all the electric devices that are capable of receiving emergency alert broadcasts at homes in the disaster area from the broadcasting station side, and to reduce power load concentration on distribution facilities such as substations.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine a component suitably in different embodiment.

It is a figure which shows the structural example of the digital television receiver 100 in a present Example. It is the block diagram which showed the internal structure of the digital television receiver 100 in a present Example. It is a table which manages the information regarding the other electric equipment stored in the database 33 in a present Example. It is a figure which shows an example of an internal structure of the power supply supervision part 150 in a present Example. It is the figure which showed simply the structure of the broadcasting station 1 in a present Example. It is a figure which shows the standby time designation | designated method using the emergency indicator in PMT in a present Example. It is the flowchart which showed the flow at the time of emergency alert broadcast reception in the digital television receiver 100 in a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Broadcasting station 10 ... Reception part 11 ... Tuner part 12 ... Notification signal detection part 13 ... Antenna 20 ... Output processing part (output means)
21 ... Demultiplexing unit 22 ... Audio decoder 23 ... Speaker 24 ... Video decoder 25 ... LCD
30 ... Power supply control unit 31 ... Control unit 32 ... Power supply unit 33 ... Database 34 ... Interface unit 35 ... Network communication unit 100 ... Digital television receiver 150 ... Power supply unit 170 ... Main power supply

Claims (10)

Broadcast wave receiving means for receiving broadcast waves from a broadcast station;
Signal detection means for detecting an alarm signal for notifying emergency warning broadcast included in the broadcast wave received by the broadcast wave receiving means;
In accordance with detection of the alarm signal by the signal detection means, power supply means for supplying power to the display,
Display means for displaying the emergency alert broadcast on the display for supplying power by the power supply means upon detection of the alarm signal by the signal detection means;
A television receiver, comprising: network communication means for transmitting a command to turn off power to an external device via a network in accordance with detection of the alarm signal by the signal detection means. An input means for receiving an input for designating an external device to be turned off;
The said network communication means transmits the command which turns off the said power to the external apparatus designated by the input from the said input means with the detection of the said alarm signal by the said signal detection means. Television receiver. The input means receives an input for designating a power-off time until the power is turned on again after turning off the power;
The network communication unit transmits a command to turn on an external device as the power-off time designated by the input from the input unit elapses after the command to turn off the power is transmitted. The television receiver according to claim 2. The signal detection means detects a standby time designation signal that designates a standby time from the reception of the alarm signal to the start of power supply to the display display, which is included in the broadcast wave received by the broadcast wave reception means,
The power supply means supplies power to the display as the standby time designated by the standby time designation signal elapses from detection of the alarm signal by the signal detection means. The described television receiver. A display for displaying broadcast programs;
An antenna for receiving broadcast waves from a broadcasting station;
A signal detection unit for detecting an alarm signal for notifying an emergency alarm broadcast included in the broadcast wave received by the antenna;
With the detection of the alarm signal by the signal detection unit, a power supply unit that supplies power to the display;
A television communication device, comprising: a network communication unit that transmits a command to turn off power to an external device via a network when the alarm signal is detected by the signal detection unit. An input unit for receiving an input for designating an external device to be turned off;
The said network communication part transmits the command which turns off the said power to the external apparatus designated by the input from the said input part with the detection of the said alarm signal by the said signal detection part. Television receiver. The input unit receives an input for designating a power-off time from turning off the power to turning on the power again,
The network communication unit transmits a command to turn on an external device as the power-off time designated by the input from the input unit elapses after the command to turn off the power is transmitted. The television receiver according to claim 6. The signal detection unit detects a standby time designation signal for designating a standby time from the reception of the warning signal to the start of power supply to the display included in the broadcast wave received by the antenna,
The said power supply part supplies electric power to the said display with progress of the standby time designated by the said standby time designation | designated signal from the detection of the said alarm signal by the said signal detection means. Television receiver. A signal generating means for generating a standby time designation signal for designating a time to wait from the reception of an alarm signal notifying emergency broadcast to the receiver that receives the broadcast wave until the start of power supply to the display of the receiver;
A broadcast transmitter comprising: broadcast wave transmission means for transmitting a broadcast wave including the standby time designation signal and the warning signal generated by the signal generation means. 10. The broadcast transmitter according to claim 9, wherein the signal generating means generates the standby time designation signal by writing information relating to the standby time in an emergency indicator in a program map table.

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