JP2003250112A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver capable of providing contents of an emergency warning broadcast to a user even when an emergency warning is broadcast when the user goes out. <P>SOLUTION: A CPU 13 executes automatic reception/video output processing when broadcast of an emergency warning is started, allows a remote control transmitter 18 for a video recorder to output a video recording start signal and allows a video recorder 19 to start video-recording of the emergency warning broadcast. When the emergency alarm broadcast is finished, the CPU 13 performs original channel restoration processing or television OFF (standby state) processing and allows the remote control transmitter 18 for the video recorder to output a video recording end signal so as to stop video recording of the video recorder 19. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiving apparatus for receiving digital broadcast.

[0002]

2. Description of the Related Art A digital broadcasting receiving apparatus for receiving digital broadcasting using satellites or terrestrial waves selects an arbitrary broadcasting wave from a plurality of broadcasting waves received through a dedicated antenna or a terrestrial antenna by a tuner. , Select any channel from the multiple channels included in the selected broadcast wave by demultiplexing, extract the digital signal of this selected channel, and decode it to output video / audio signals. .

By the way, such a digital broadcasting system is provided with a mechanism for transmitting an emergency alert broadcast when a disaster occurs and forcing the receiving device to receive the emergency alert broadcast. The receiving device has a transmission method, a frame structure, a T
TMC which is a signal for controlling transmission of S_ID and the like
C (Transmission and Multip)
lexing Configuration Cont
The start control bit included in the signal rol) is monitored, and when the start control bit changes from 0 to 1, the start control bit is set to 1
PMT (Program M
the emergency alert descriptor in the ap Table). At this time, if “start_end_flag = 1” and “area_code = prefectural area designated area designator set in the receiving device”, service_ in PMT
The channel described in id will be selected and received. When the emergency alert descriptor is deleted from the PMT of the receiving channel, the receiving device will receive the emergency alert broadcast (EW).
The reception process of S) is completed.

At the time of the emergency warning broadcast, if the user is watching television, the emergency warning broadcast automatically switched from the program being watched can be viewed.
Even if the receiving device is TV OFF (standby state), TMCC can be received by operating the tuner unit and the CPU, and during the emergency alert broadcast, the TV ON process is automatically executed to display the image of the emergency alert broadcast. It is possible to present. In this case, if the user is near the receiving device, the emergency alert broadcast can be viewed even if the television is turned off.

[0005]

However, when the user is not near the receiving device, or when the emergency alert broadcast is broadcast when the user is sleeping or going out, the emergency alert broadcast should be viewed. I can't.

In view of the above circumstances, the present invention provides a digital broadcast receiving apparatus capable of presenting the content of an emergency alert broadcast to a user even when the emergency alert is broadcast while the user is out. The purpose is to provide.

[0007]

In order to solve the above-mentioned problems, a digital broadcast receiving apparatus of the present invention provides an emergency alert under a predetermined condition when a signal indicating that an emergency alert broadcast is broadcast is detected. It is characterized by comprising means for executing a process for receiving a broadcast, and means for automatically outputting a recording start signal to a recording device for recording the received emergency warning broadcast.

With the above configuration, since the received emergency alert broadcast is automatically recorded, even if the emergency alert broadcast cannot be viewed because the user is out, for example, by playing back after returning home, the emergency alert broadcast is executed. You will be able to watch the warning broadcast.

A message notifying that the emergency alert broadcast has been recorded is preferably displayed on the screen. According to this, for example, when the television is turned on after returning home, the message is displayed, so that the user can know that the emergency alert broadcast is recorded.

The broadcast date and time of the emergency alert broadcast may be displayed together with the message. According to this, it is possible to know when the emergency alert broadcast was broadcast without executing the reproduction.

Also, the automatic recording of the emergency alert broadcast is turned on / off.
A menu for FF may be provided.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
Through FIG. 3, the user is the BS here.
(Broadcasting Satellite) A case of viewing a digital broadcast is illustrated. FIG. 1 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment, and FIG. 2 is an explanatory view of a menu screen for displaying various setting contents and changing settings in the receiving apparatus 30, and FIG. FIG. 7 is an explanatory diagram of a screen displaying a message informing that an emergency alert broadcast has been recorded.

In FIG. 1, an antenna 1 is arranged outdoors in a predetermined direction and receives a digital broadcast signal sent from a BS. This antenna 1 is generally equipped with a frequency converter, and gives a received / frequency-converted signal to the tuner 2.

The tuner 2 extracts a signal of a specific frequency from the high frequency digital modulation signal containing video / audio data. That is, a process of selecting one from a plurality of transponders for digital broadcasting is performed. Further, the tuner 2 includes a demodulation circuit, a deinterleave circuit, an error correction circuit, etc., and demodulates the selected digital modulation signal to output a transport stream.

A demultiplexer (DEMUX) 3 converts the transport stream into MPEG2 (Mov).
ing Picture Experts Group
2) video stream, audio stream, and PSI / SI (Program Specific I)
nformation / Service Information
ation). The demultiplexer 3 receives the video stream and the audio stream from the AV decoder 4
Program information (program name, program name,
The program start time, program content information, program genre information, etc.) are supplied to the CPU 13. As described above, a plurality of channels are multiplexed in the transport stream, and the process for selecting an arbitrary channel from this is performed by selecting the desired channel from the PSI / SI in the transport stream. Then, it becomes possible by extracting the data (PAT, PMT, etc.) indicating which packet ID is used for multiplexing. In addition, transport stream selection (transponder selection) is PS
It can be performed based on the I / SI information.

The AV decoder 4 comprises a video decoder for decoding a video stream and an audio decoder for decoding an audio stream. The video decoder decodes the input variable length code to obtain a quantized coefficient and a motion vector, and performs inverse DCT conversion and motion compensation control based on the motion vector. The audio decoder decodes the input coded signal to generate audio data. The video data generated by 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 and performs D / A conversion to convert it into a composite video signal, for example. The audio processing circuit 6 receives the audio data output from the AV decoder 4 and receives the D / A
The conversion is performed to generate, for example, a right (R) sound analog signal and a left (L) sound analog signal.

The video output circuit 7 and the audio output circuit 8 are provided with output resistors and amplifiers. The AV output terminal 9 has an output section (a set of left and right audio output terminals, a video output terminal, etc.)
A monitor 16 having a picture tube 16a and a speaker 16b and a recording device 19 are connected to the output section by a video / audio code 17.

The OSD circuit 12 outputs to the adder 20 video data based on the character information and color information instructed by the CPU 13. The adder 20 performs a process of incorporating the video data into the received video data output from the AV decoder 4. The OSD circuit 12 causes the CPU 13 to receive an EPG (Electro) based on the program information described above.
nic Program Guide) display, menu display, message display, etc. can be performed.

The remote control transmitter 10 is a transmitter for sending a command to the broadcast receiving apparatus 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 sent from a light emitting unit (not shown). The remote control light receiver 11 receives the signal light, converts it into an electric signal, and gives it to the CPU 13. The user can also use the “up / down” direction keys and the “enter” key provided on the remote control transmitter 10 to select items and make various settings on the menu screen, for example.

Non-volatile memory (eg EEPROM etc.)
In 14 is stored data (program information) for displaying an EPG screen and the like, as well as various setting information of the receiving device 30.

The remote control transmitter 18 for the recording device is a transmitter for sending a command to the recording device 19, and the CPU 1
3, a signal light (remote control signal) indicating the content of the command is output from a light emitting unit (not shown). CPU13
Can perform command processing based on the remote control code in the recording device of each company. When issuing a command to the recording device 19, the remote controller transmitter 18 for the recording device is driven based on the remote control code used in the recording device 19. .

The CPU 13 performs the overall control of the digital broadcast receiving apparatus 30, and in particular, as the control according to the present invention, it executes the automatic recording process of the emergency alert broadcast. Hereinafter, such processing will be described.

FIG. 2 (a) is an explanatory view of a menu screen displaying various setting contents in the receiving device 30, and FIG. 2 (b) is a menu screen for selecting an item of "emergency alert automatic recording setting". It is explanatory drawing of the screen displayed when it does. In the menu screen of FIG. 2A, "○○○○
Various items such as “setting”, “ΔΔΔ setting”, “emergency alert automatic recording setting”, and the setting state of each item are described.

When "emergency alert automatic recording setting" is set to "not automatic recording" as shown in FIG. 2 (a),
As in the conventional case, the CPU 13 performs automatic reception / video output processing (under region matching conditions) when an emergency alert broadcast is performed and original channel restoration processing or television OFF (standby) processing when the emergency alert broadcast is finished. Will be done.

In order to automatically record the emergency alert broadcast, the remote controller transmitter 10 is operated on the menu screen of FIG. 2A to place the cursor on the item "Emergency alert automatic recording setting" ( Change the color) and press the "Enter" key. By this operation, as shown in FIG. 2B, since options such as “do not automatically record” and “automatically record” corresponding to “emergency alert automatic recording setting” are displayed, the user can “automatically record”. Item (change the color) and press the "Enter" key.

When the emergency alert broadcast is set to be automatically recorded, the CPU 13 executes the automatic reception / video output processing (under the region matching condition) when the emergency alert broadcast is started and the remote control transmission for the recording device. Machine 18
To output a recording start signal to cause the recording device 19 to start recording the emergency alert broadcast. When the emergency warning broadcast is finished, the original channel restoration process or the TV OFF (standby state) process is performed, and the recording end signal is output from the recording device remote control transmitter 18, and the recording device 1
Stop recording of 9.

When the above-mentioned emergency alert broadcast is received and recorded while the television is on, for example, the message "Emergency alert broadcast was automatically recorded" is superimposed on the received program image and displayed in the lower corner of the screen. indicate. When the user, after leaving the receiving device 30 while the television is on, does some business for a while and then returns to the receiving device 30 and sees the message, the emergency alert broadcast was broadcast and By knowing that the recording has been performed and playing it back on the recording device 19,
You will be able to watch the emergency alert broadcast.

When the above-mentioned emergency alert broadcast is recorded when the television is off (standby state), when the television is turned on after that, "Automatic recording of emergency alert broadcast is displayed in the center of the screen as shown in FIG. Message is displayed. If the message is displayed when the user returns from the place where he / she goes and turns on the television, by knowing that the emergency alert broadcast has been broadcast and that this has been automatically recorded, the recording device 19 can reproduce and execute it. , You can watch the emergency alert broadcast. It is desirable to display the broadcast date and time of the emergency alert broadcast together with the message. If the broadcast date and time is not displayed, it is necessary to confirm by playback the time when the emergency alert broadcast was broadcasted.If the broadcast date and time is displayed, at what time the emergency alert broadcast was broadcast You can know without playing. Here, if the emergency alert broadcast was broadcast one day ago, it is possible to select not to play the emergency alert broadcast.

In the above embodiment, an example in which the recording device remote control transmitter 18 controls the recording device 19 has been shown, but the recording device 19 may be controlled using a dedicated control line. . In addition, the recording device 19 is a digital
The configuration may be such that R is used and IEEE 1394 is used as an interface for control. Alternatively, the built-in recording device may be used to record the emergency alert broadcast.

[0031]

As described above, with the digital broadcast receiving apparatus of the present invention, even when an emergency alert broadcast is broadcast while the user is out, the emergency alert broadcast is automatically recorded and presented to the user. There is an effect that can be done.

[Brief description of drawings]

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

FIG. 2A is an explanatory diagram of a menu screen displaying various setting contents in the receiving device, and FIG.
[Fig. 7] is an explanatory diagram of a screen displayed when the item of "emergency alert automatic recording setting" is selected on the menu screen.

FIG. 3 is an explanatory diagram of a screen displaying a message notifying that an emergency alert broadcast has been recorded.

[Explanation of symbols]

1 antenna 2 BS digital tuner 3 Demultiplexer (DEMUX) 4 AV decoder 12 OSD circuit 13 CPU 14 Non-volatile memory 18 Remote control transmitter for recording device 19 Recording device

Claims (4)

[Claims] 1. A means for executing a process for receiving an emergency alert broadcast under a predetermined condition when a signal indicating that the emergency alert broadcast is broadcast is detected, and recording the received emergency alert broadcast. A means for automatically outputting a recording start signal to a recording device, the digital broadcast receiving device. 2. The digital broadcast receiving apparatus according to claim 1, wherein a message notifying that an emergency alert broadcast has been recorded is displayed on the screen. 3. The digital broadcast receiving device according to claim 2, wherein the broadcast date and time of the emergency alert broadcast is displayed together with the message. 4. The digital broadcast receiving apparatus according to claim 1, further comprising a menu for turning on / off automatic recording of an emergency alert broadcast. .