JP2001211441A - Broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast receiver that allows a user to acquire contents of an emergency broadcast even when the emergency is broadcast while the user is out. SOLUTION: When detecting information denoting start of an emergency broadcast, a system controller 13 receives the emergency broadcast, reads data of a telephone number stored in a memory 14 and transmits the data to a phone communication processing circuit 15. The phone communication processing circuit 15 uses an automatic dial function to automatically makes a call to the telephone number so as to process transmission of a voice signal of the broadcast outputted from a voice processing circuit 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus for receiving, for example, digital television broadcasting and outputting video and audio, and further receiving an emergency warning broadcast and presenting an emergency warning to a viewer. About what you can do.

[0002]

2. Description of the Related Art Image compression using digital signal compression technology
There is digital broadcasting that compresses audio signals and broadcasts a stream (transport stream) obtained by time-division multiplexing of video and audio digital signals of a plurality of programs via a transponder (satellite repeater). On the other hand, a broadcast receiving apparatus that receives such a digital multi-channel broadcast selects one of a plurality of transponders of the digital broadcast received through a dedicated antenna by a tuner, and selects a plurality of channels included in the one transponder. One of them is selected by demultiplex processing, and a video / audio signal is output by decoding a digital signal of the selected channel.

[0003] In such digital television broadcasting, in addition to transmitting video and audio in the same manner as conventional analog broadcasting, it is possible to transmit other information. Other information includes program information and genre information, and may further include information notifying the start of emergency alert broadcasting.

Conventionally, for example, analog CATV
In broadcasting, a broadcast receiving device has a built-in dedicated receiving circuit for a broadcast start signal of an emergency alert, and can notify a viewer when the broadcast start signal is received. Also, in analog terrestrial broadcasting, a signal (64 bps data) also serving as an alarm sound is transmitted at the start of an emergency alarm broadcast, a receiver having a specific function is automatically operated, and attention is alerted by the alarm sound. Attempts have been made to communicate disaster information above.

[0005]

However, in the conventional broadcast receiving apparatus, it is necessary to view the emergency alert broadcast unless the user is watching the broadcast receiving apparatus or is near the broadcast receiving apparatus. Can not. That is, when an emergency alert is broadcast while the user is out of the office, there is a disadvantage that the user cannot know the emergency alert broadcast.

The present invention has been made in view of the above circumstances, and has as its object to provide a broadcast receiving apparatus that enables a user to know the contents of an emergency alert broadcast even when an emergency alert is broadcast while going out. I do.

[0007]

According to the present invention, there is provided a broadcast receiving apparatus comprising: an automatic communication unit for automatically connecting a line to a designated destination registered in advance by a user; Emergency alert broadcast determination means for detecting information indicating that an emergency alert is broadcast, and transmission control means for operating the automatic communication means and transmitting information generated by receiving an emergency alert broadcast to the designated destination, It is characterized by having.

With the above configuration, the received emergency alert broadcast information is transmitted to a mobile phone owned by the user through, for example, a telephone line. Therefore, even when an emergency alert is broadcast when the user is out, the user can know the contents of the emergency alert broadcast in real time using the mobile phone.

[0009] It may be so arranged that the user can arbitrarily set the validity / invalidity of the information transmission of the emergency alert broadcast.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to FIG.
In the following description, the user is BS (Br)
oadcasting via Satellite)
The case where digital broadcasting is received is illustrated. FIG. 1 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment for receiving a BS digital broadcast.

The antenna 1 is arranged outdoors in a predetermined direction, and receives a digital broadcast signal transmitted from a BS. The antenna 1 generally includes a frequency converter, and supplies a received / frequency-converted signal to a tuner 2.

The tuner 2 extracts a signal of a specific frequency from a high-frequency digital modulation signal including video and audio data. That is, a process of selecting one from a plurality of digital broadcast transponders is performed. In addition, the tuner 2 includes a deinterleave circuit, an error correction circuit, and the like, and thus demodulates the selected digital modulation signal and outputs a transport stream.

A demultiplexer (DEMUX) 3 converts the transport stream received from the tuner 2 into an MPEG2 (Moving Picture Ex
Parts Transport Group 2) Video Transport Packet, Audio Transport Packet, PSI
(Program Specific Information
), and a program data packet. The demultiplexer 3 supplies a video transport packet and an audio transport packet to the AV decoder 4, and supplies service information and program data included in the PSI to the system controller 13. As described above, a plurality of channels are multiplexed in the transport stream, and a process for selecting an arbitrary channel from the multiplexed channel is performed by selecting an arbitrary channel from the PSI in the transport stream. This becomes possible by extracting data such as whether the data is multiplexed by the packet ID. If a bit indicating that an emergency alert is to be broadcast is incorporated into the PSI and broadcast, it can be determined that an emergency alert is to be broadcast by checking whether a predetermined bit of the PSI is set. Further, selection of a transport stream (selection of a transponder) can also be performed based on PSI information.

The AV decoder 4 includes a video decoder for decoding video transport packets and an audio decoder for decoding audio transport packets. The video decoder is
The input variable length code is decoded to obtain a quantization coefficient and a motion vector, and inverse DCT transform and motion compensation control based on the motion vector are performed. The audio decoder generates audio data by decoding the input coded signal. The video data generated by the decoding is output to the video processing circuit 5, and the audio data is output to the audio processing circuit 6.

The video processing circuit 5 receives the video data from the AV decoder 4, performs D / A conversion, and performs, for example, NTSC.
Convert to a composite signal of the format. The audio signal processing circuit 6 receives the audio data output from the AV decoder 4, performs D / A conversion, and generates a right (R) sound analog signal and a left (L) sound analog signal. The video output circuit 7 and the audio output circuit 8 include an output resistor, an amplifier, and the like. A monitor 21 is connected to the AV output terminal 9. The monitor 21 includes an image receiving unit including the deflection circuit 17 and the high voltage circuit 18 for driving the cathode ray tube 19, a speaker 20, and the like.

An OSD (On Screen Display) display circuit 12 adds bitmap data based on the character information output from the system controller 13 to the adder 1.
6 is output. The adder 16 performs a process of incorporating the bitmap data into a video signal output from the video processing circuit 5. The OSD display circuit 12 receives an EPG (Electronic Pr) based on service information included in the PSI received by the system controller 13.
(Guide Guide) screen display can be realized, and also an operation guide screen can be displayed.

The remote control transmitter 10 is a transmitter for sending a command to the broadcast receiving device 30. When a key (not shown) provided on the remote control transmitter 10 is operated, a signal light (remote control signal) indicating a command corresponding to the key is transmitted from a light emitting unit (not shown). The remote control light receiver 11 receives the signal light, converts the light into an electric signal, and supplies the electric signal to the system controller 13.

The system controller 13 performs a program selection process by the user using the remote control transmitter 10 and the like. Then, as the process according to the present invention, the process of storing the numerical data indicating the telephone number input by the user in the nonvolatile memory 14 and the setting of enabling or disabling the transmission of the emergency alert broadcast are accepted. A process for storing the set information in the memory 14 is performed. The information input processing is performed by the OSD display circuit 12 on an operation screen (telephone number input instruction screen or communication setting valid / invalid screen).
Is displayed, and by detecting which key of the remote control transmitter 10 has been operated. Also,
When receiving a digital broadcast, the system controller 13
A process for detecting a bit state indicating the start of emergency alert broadcasting in the PSI is performed. Then, when the bit indicating the start of the emergency alert broadcast is detected, for example, if a dedicated channel on which the emergency alert is broadcast is prepared, the process of selecting the channel is performed and the emergency alert broadcast is received, When the transmission valid / invalid setting of the emergency alert broadcast is selected, the telephone number data stored in the memory 14 is read and transmitted to the telephone communication processing circuit 15.

The telephone communication processing circuit 15 starts operating in accordance with an instruction from the system controller 13, and receives telephone number data from the system controller 13.
A call is automatically made by an auto-dial function, and a process of transmitting a voice signal output from the voice processing circuit 6 through a telephone line is performed.

Thus, the received audio signal of the emergency alert broadcast is transmitted to, for example, a mobile phone owned by the user through the telephone line. Therefore, even when an emergency alert is broadcast when the user is out of the office, the user can know the contents of the emergency broadcast by the sound of the mobile phone.

The broadcast receiver is not limited to a digital broadcast receiver, but may be an analog broadcast receiver. The information transmitted by the telephone communication processing circuit 15 is not limited to the above-described audio, Data and character data can also be used. In this case, the telephone communication processing circuit 15 has a modem function or uses an externally installed TA (terminal adapter), and converts the digital image data generated by the AV decoder 4 into a format such as GIF for image data. The character data may be transmitted, for example, and character string data obtained by receiving a text broadcast may be transmitted. In the case of analog broadcast reception, an A / D converter for converting an image into digital data is required.
An A / D converter is unnecessary for a digital broadcast receiving device.

Also, in view of the fact that a large amount of power is consumed when the power of the broadcast receiving apparatus is always turned on,
In the standby state, a configuration may be adopted in which power is supplied only to a part necessary for starting emergency alert broadcast reception, or a configuration in which operation is automatically started by a specific signal to receive emergency alert broadcast is adopted. You may.

[0023]

As described above, according to the present invention, even when an emergency alert is broadcast when the user is out of the office, the user can know the contents of the emergency broadcast in real time. Play.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a digital broadcast receiving apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 2 Tuner 3 Demultiplexer (DEMUX) 4 AV decoder 5 Video processing circuit 6 Audio processing circuit 13 System controller 14 Memory 15 Telephone communication processing circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04H 1/00 H04N 5/44 A H04M 11/04 H04B 7/26 K H04N 5/44 109C

Claims (2)

[Claims] An automatic communication means for automatically connecting a line to a designated destination registered in advance by a user; an emergency alert broadcast determining means for detecting information indicating that an emergency alert is broadcast; A broadcast receiving apparatus, comprising: transmission control means for operating automatic communication means and transmitting information generated by receiving an emergency alert broadcast to the designated destination. 2. The broadcast receiving apparatus according to claim 1, wherein the user can arbitrarily set valid / invalid of information transmission of the emergency alert broadcast.