JP2002084474A - Digital television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital television receiver provided with a means that informs a viewer about the type of broadcast format information of a received stream and allows the viewer to view a video signal with an optional resolution depending on the type of the broadcast format information. SOLUTION: A VBI(Vertical Blanking Interval) data slicer 16 extracts the broadcast format information including the received stream and sends it to a micro controller 11. The micro controller 11 compares and collates the broadcast format information with the broadcast format information up to now stored in a memory 11B and, when the result of comparison and collation indicates that both the broadcast format information sets are different, allows a CRT 10 to display a message denoting the revision of the broadcast format information and a guide for the viewer to select a mode for decoding output of the video signal onto the CRT 10 at the same time through a graphics processor 13, electronic switches 8R, 8G, 8B and CRT drivers 9R, 9G, 9B, thereby allowing the viewer to use a remote commander 17 to select an optional decoding output mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital television receiver and, more particularly, to a digital television receiver which receives a received stream according to a broadcast format (number of scanning lines, picture rate, resolution, etc.) included in the received stream. The present invention relates to a digital television receiver capable of switching and decoding and outputting a video signal.

[0002]

2. Description of the Related Art A digital television receiver for receiving a digital television broadcast is provided with a video decoder for decoding and outputting a received stream of the digital television broadcast. Can decode the broadcast format (number of scanning lines, picture rate, resolution, etc.) included in the received stream, automatically decode the received stream according to the broadcast format, and output a video signal. Various digital television receivers have been proposed or released.

[0003]

However, since the conventional digital television receiver does not have means for notifying the viewer of the broadcast format of the received stream, the broadcast of the currently received broadcast stream is not provided. Even if the broadcast format has been changed from the broadcast format of the previously received stream,
The change cannot be known, and there is no means for confirming the type of the broadcast format of the currently received reception stream, or the confirmation means is very complicated. For example, the type of a broadcast program currently received is a high definition television HDTV (High Definition Televisi).
on) broadcast or standard television SDTV (Standa
rd Definition Television), there has been no means for viewers to easily confirm whether the broadcast is broadcast.

Further, for example, when the broadcast format of a broadcast program currently being received is switched from HDTV broadcast to SDTV broadcast, a decoding output mode (for example, resolution ) Automatically switches to the SDTV decoding output mode. Therefore, even if the viewer himself / herself does not view the broadcast program in the selected decoding output mode,
For example, receiving up-conversion reception for viewing SDTV broadcasting at a resolution compatible with HDTV, or conversely,
Even if you try to perform down-conversion reception to watch HDTV broadcasts at a resolution compatible with SDTV,
Such a choice was difficult.

In a conventional analog television broadcast, an electronic program guide EPG (Electronic Program G) inserted using a vertical blanking interval (VBI) of an analog television signal is used.
uide List), it was possible for the viewer to know a list of broadcast programs to be broadcast. However, in digital television broadcasting, an electronic program list similar to analog television broadcasting is included in digital television broadcasting streams. E
PG is included and transmitted. Therefore, from the electronic program guide EPG information included in the received stream, the viewer can know a list of broadcast programs to be broadcast. However, the list of the electronic program guide EPG does not include information on a broadcast format for each broadcast program. Therefore, even if the electronic program guide EPG is displayed in a list, the viewer can determine whether the program is an SDTV broadcast program or an HDTV broadcast program by displaying the electronic program guide EPG in a list. Can not know from.

The present invention has been made in view of such a problem, and provides a viewer with broadcast format information of a received stream as format identification information indicating a resolution or the like so that the viewer can add the broadcast format information to the broadcast format information. The broadcast program can be viewed at a resolution or the like selected in accordance with the broadcast program. Further, information on the broadcast format can be displayed on the screen being viewed or the broadcast can be displayed when the electronic program guide EPG is displayed in a list. The display format information is also displayed.

[0007]

SUMMARY OF THE INVENTION The present invention provides technical means for solving the above-mentioned problems, and specifically comprises the following technical means.

A first technical means is a digital television receiver for setting a decoding output mode in accordance with broadcast format information included in a received stream of digital television broadcasting, and decoding and outputting the received stream. In the determination means for determining whether or not the broadcast format information included in the received stream has been changed, and when it is determined that the change has been made, change display means for inserting the fact into a video signal and displaying the display, Mode selecting means for allowing a viewer to select an arbitrary decoding output mode from a plurality of decoding output modes provided in advance and to set the decoding output mode of the received stream in accordance with the display display. It is characterized by the following.

A second technical means is the first technical means, wherein the decoding output mode provided in advance has two decoding output modes of a high definition television display mode and a standard television display mode. It is characterized by doing.

[0010] The third technical means is a video output means for setting a decoding output mode according to the broadcast format information included in the received stream of the digital television broadcast, decoding and outputting the received stream, In a digital television receiver having program information receiving means for receiving electronic program guide information included in the received stream, broadcast format information of a broadcast program included in the received electronic program guide information is included in the received stream. Format information extracting means for detecting by extracting from the table information relating to the broadcast program to be broadcasted, and, based on the extracted broadcast format information, classifying the broadcast program list according to the type of broadcast format information, Program display means for inserting into a video signal and displaying on a display. It is obtained by the.

A fourth technical means is the third technical means, wherein the program display means inserts a list of the broadcast programs into a video signal and displays the list on a video signal for display on a display column for each broadcast program. It is characterized in that colors are displayed in different colors according to the type of broadcast format information.

A fifth technical means is a video output means for setting a decoding output mode in accordance with broadcast format information included in a received stream of digital television broadcasting, and decoding and outputting the received stream. In a digital television receiver having program information receiving means for receiving electronic program guide information included in the received stream, broadcast format information of a broadcast program included in the received electronic program guide information is included in the received stream. Format information extracting means for detecting by extracting from the broadcast format information to be selected, and selecting only a list of the broadcast programs matching the type of the broadcast format information specified by the viewer, inserting the list into the video signal, and displaying the selected program. And means for displaying a selected program to be displayed.

[0013] A sixth technical means is the communication device according to any one of the third to fifth technical means, wherein the broadcast format information extracted by the format information extracting means is a high definition television display mode and a standard television display mode. The present invention is characterized in that the display mode is one of the display modes.

[0014] A seventh technical means is a video output means for setting a decoding output mode in accordance with the broadcast format information included in the received stream of the digital television broadcast, decoding and outputting the received stream, Channel display means for inserting a channel number selected by a viewer into a video signal and displaying it as a display channel number on a display, in accordance with the type of the format information for broadcasting. The display character color of the number is changed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a digital television receiver according to the present invention will be described with reference to the drawings.
FIG. 1 is a functional block diagram illustrating an example of an embodiment of a digital television receiver according to the present invention. In FIG. 1, an intermediate frequency signal of a received stream received by an antenna 1 and output from a tuner 2 is separated and amplified into a video intermediate frequency signal and an audio intermediate frequency signal by an intermediate frequency amplifier 3, and the video intermediate frequency signal is amplified. The frequency signal is supplied to the video detector 4, and the audio intermediate frequency signal is supplied to the audio detector 21. The audio intermediate frequency signal is detected by an audio detector 21, converted into an analog audio signal, amplified by an audio amplifier 22, and output from a speaker 23. One video intermediate frequency signal is supplied to the video detector 4 and detected. The analog video signal output from the video detector 4 is amplified by the video amplifier circuit 5 and supplied to the matrix circuit 6.

The carrier chrominance signal C separated and output by the video amplifying circuit 5 is supplied to the color reproducing circuit 7 to form red and blue color difference signals, and the chrominance signals output from the color reproducing circuit 7 are formed. The signal is supplied to the matrix circuit 6. The red, green, and blue color signals R, output from the matrix circuit 6,
G and B are supplied to input terminals on the video signal side of the electronic switches 8R, 8G and 8B, respectively. The electronic switch 8
The color signals R, G, B output from R, 8G, 8B
Are supplied to the CRT 10 via the CRT drivers 9R, 9G, and 9B, respectively, and are displayed on the CRT 10 as video information.

Here, 11 is a CPU 11A and a memory 11
B is a microcontroller for a television system, comprising: The microcontroller 11 is connected to a remote control light receiving unit 12 for receiving an infrared remote control signal from a remote commander 17 operated by a viewer. The microcontroller 11 decodes and decodes the remote control signal, controls the tuner 2 and the entire television system based on the decoding result, and gives various operation instructions such as a channel selection operation of a viewer. In response, it controls the entire television system.

The video signal output from the video detector 4 is also supplied to a synchronization separation circuit 14, which extracts horizontal and vertical synchronization signals HD and VD. The horizontal and vertical synchronization signals HD and VD extracted by the synchronization separation circuit 14 are supplied as reference synchronization signals to a graphics processor 13 that generates graphics information to be displayed on a CRT 10. On the other hand, the operation of the graphics processor 13 is controlled by the microcontroller 11. For example, when the viewer powers on or performs a channel selection operation using the remote commander 17, the microcontroller 11 sets the selected channel number to C.
In order to display the selected channel on the RT 10, the selected channel number is sent to the graphics processor 13 to instruct the graphics processor 13 to generate character information.
G and 8B are controlled to be switched according to the reference synchronization signals of the horizontal and vertical synchronization signals HD and VD, and the selected channel number is inserted into the video signal composed of the color signals R, G and B,
It is displayed on the CRT 10.

That is, when the channel number is displayed, the graphics processor 13 responds to the character and display color specified by the microcontroller 11.
Generates the color signals Rc, Gc, and Bc as colored character information and displays the color channel numbers on the CRT 10 for a predetermined time.
R, 8G and 8B are switched and controlled. Therefore, for example, the microcontroller 11 has means for identifying the broadcast format information of the received stream, and changes the display character color of the channel number in accordance with the type of the broadcast format information to select it. If the generation of the character information of the station channel number is specified to the graphics processor 13, the viewer can know the broadcast format information of the current reception stream from the display character color of the selected channel number.

The video signal output from the video detector 4 is passed through a low pass filter LPF (Low Pass Filter) 15 to a vertical blanking interval VBI (Vertical Blanking Interv.).
al, hereinafter referred to as VBI). The VBI data slicer 16 includes, among various signals inserted in the received stream, text information,
That is, it has a function of extracting VBI data, and the VBI data includes a program information table PSI (Program Specific Information Format) in the MPEG-2 standard.
n) Information corresponding to information, information indicating a broadcast format of a received stream, and an electronic program guide EPG (Electronic P
rogram Guide List). The VBI data extracted from the VBI data slicer 16 is:
It is supplied to the microcontroller 11. The microcontroller 11 stores the VBI data in the memory 11B, and decodes and decodes the VBI data.

Therefore, the microcontroller 11
Identifies the information related to the scanning line or picture rate by decoding the broadcast format information of the received stream contained in the VBI data, and, as described above, selects a channel according to the level of the broadcast format information. By changing the display character color of the number, the color of the selected channel number can be displayed on the CRT 10 via the graphics processor 13.

For example, when identifying a broadcast program in a high-definition television HDTV mode or a broadcast program in a standard television SDTV mode from an identification signal related to a scanning line or a picture rate included in broadcast format information, In Japan, the number of scanning lines is 112
If there are five, HDTV mode, if 525, S
ATSC in DTV mode, approved by the US FCC
In the (Advanced Television Systems Committee) standard, if the number of scanning lines is 1080, the mode is the HDTV mode, and if the number is 480, the mode is the SDTV mode.
In the ATSC standard, 18 types of standards having different specifications such as resolution, picture rate, aspect ratio, and scanning method are defined, and such resolution, scanning line and picture rate included in the broadcast format information are defined. The other broadcast modes can be identified in the same manner from the identification signal for the other broadcast modes.

Next, a first embodiment of a digital television receiver according to the present invention will be described with reference to FIG. In FIG. 2, the broadcast format information of the received stream is a high definition television HDTV (High Definition).
ition Television) broadcast to standard television SDTV
When switching to (Standard Definition Television) broadcasting, text information to that effect is inserted into the video signal on the CRT 10 to display an on-screen display OSD (On Screen).
n Display) to allow the viewer to select the output format of the video signal of the received stream to the CRT 10. In other words, the character string “Broadcast format has been changed. Do you want to switch the output format?” Is displayed on the display, and the viewer is provided with a CRT output format in either SDTV mode or HDTV mode as a decoding output mode. A guidance display for selecting whether to output an image to the CRT 10 is performed. Here, when the viewer selects “YES (SDTV)”, the CRT 1
0 is also displayed as the same resolution in the SDTV mode as the broadcast format of the received stream, but if the viewer selects “NO (HDTV)”, C
The output format to the RT 10 is up-converted to HDTV mode resolution and displayed.

Conversely, even when the SDTV broadcast is switched to the HDTV broadcast, SDTV and HTV shown in FIG.
A selection screen is displayed on which a guidance display in which the display of the DTV is reversed is displayed.
V) ", the output format to the CRT 10 is the same HDTV as the broadcast format of the received stream.
Is displayed as the resolution of the mode,
(SDTV) ", the output format to the CRT 10 is down-converted to the SDTV mode resolution and displayed.

Next, the above operation will be described in detail with reference to the functional block diagram shown in FIG. The intermediate frequency signal of the received stream output from the tuner 2 via the antenna 1 is separated into a video intermediate frequency signal and an audio intermediate frequency signal by an intermediate frequency amplifier 3, and the video intermediate frequency signal is supplied to a video detector 4. Is done. The video signal output from the video detector 4 is supplied to a VBI data slicer 16 via a reduction filter LPF 15, and text information inserted into the received stream, that is, VB
I data is extracted. The VBI data includes information indicating a broadcast format. The information of the broadcast format is stored in the CPU 1 in the microcontroller 11.
1A and decrypted. The CPU 11A compares the decrypted broadcast format information with the current broadcast format information stored in the memory 11B in order to execute a determination unit for determining whether or not the broadcast format information has been changed. Matched.

If it is determined that the broadcast format information is different from the current broadcast format information, the C
The PU 11A overwrites and saves the received new broadcast format information in the memory 11B, and displays on the display that the broadcast format information has been changed (that is, causes the change display means to be executed). The decoding output mode is displayed on the display to the viewer, and an arbitrary decoding output mode is selected from among them (that is, the mode selection means is executed). For example, when the decoding output modes provided in advance are a high definition television (HDTV) mode and a standard television (SDTV) mode, and the broadcasting format up to the present is the HDTV mode, As shown in FIG. 2, "The broadcast format has changed. Do you want to switch the output format? YES
(SDTV) / NO (HDTV) "is edited and sent to the graphics processor 13 to instruct to generate character information. The graphics processor 13 generates character fonts, character colors, and the like, controls the electronic switches 8R, 8G, 8B,
The generated character information is inserted into the video signal via the drivers 9R, 9G, and 9B, and is displayed on the CRT 10 on an on-screen display.

When the viewer selects “NO (HDTV)” with the remote commander 17 as the decoding output mode, which is a CRT output format, for the text message displayed on the on-screen display, the remote controller receiving unit 12 is used. The microcontroller 11, which has received the selection result, sets the output format of the video signal to the CRT 10 to the conventional HDTV mode,
In order to up-convert the received stream in the SDTV mode to the resolution in the HDTV mode, a switching control signal is transmitted to each of the received signal processing units such as the intermediate frequency amplifier 3, the video detector 4, and the detection amplifier circuit 5. On the other hand, if the viewer selects "YES (SDTV)" as the decoding output mode, the output format of the video signal to the CRT 10 is set to the same resolution as that of the received stream in the SDTV mode so that the display format can be displayed. The controller 11 sends a switching control signal to each of the reception signal processing units such as the intermediate frequency amplifier 3, the video detector 4, and the detection amplification circuit 5, and outputs the switching control signal to the CRT 10 in the SDTV mode. Normally, when there is a change in the broadcast format of the received stream, each received signal processing unit is switched so as to match the automatically changed broadcast format with the output format. If the viewer selects "YES (SDTV)", it is not always necessary to send the switching control signal again.

Next, a second embodiment of the digital television receiver according to the present invention will be described with reference to FIG. In FIG. 3, when a list of broadcast programs of the electronic program guide EPG information extracted from the received stream is displayed on a display, an information table PSI (Program Specific Informa) related to the broadcast program extracted from the received stream is displayed.
), the broadcast format information for each broadcast program in the electronic program guide EPG information is extracted from the PSI information, and the background color of the display column of the broadcast program is color-coded according to the type of the broadcast format information. An example is shown in which a list is displayed. That is, V in the received stream
A list of electronic program guide EPG broadcast programs extracted from the BI data is associated with the broadcast format information of each broadcast program extracted from the program information table PSI in the received stream so as to correspond to the type of the broadcast format information. By displaying the list of broadcast programs in different colors (for example, displaying the background color of the display column of the broadcast program in the HDTV mode as red and the background color of the display column of the broadcast program in the SDTV mode as green), This enables the user to easily recognize the broadcast format information of each broadcast program.

In the above description, the background color of the display column of the broadcast program is changed by the information of the broadcast format. However, the present invention is not limited to this. For example, the character color of the broadcast program name may be changed. Alternatively, a symbol or the like for identifying the broadcast format may be added. Alternatively, according to the type of broadcast format information of each broadcast program extracted from the program information table PSI, the list of broadcast programs in the electronic program guide EPG is classified, and re-grouped for each type of broadcast format information. Alternatively, it can be inserted into video information and displayed as a list. Furthermore, only a list of broadcast programs matching the type of broadcast format information designated by the viewer can be selected from the broadcast programs in the electronic program guide EPG, inserted into the video information, and displayed on the display.

Next, the above operation will be described in detail with reference to the functional block diagram shown in FIG. The intermediate frequency signal of the received stream output from the tuner 2 via the antenna 1 is dispersed by the intermediate frequency amplifier 3 into a video intermediate frequency signal and an audio intermediate frequency signal, and the video intermediate frequency signal is sent to the video detector 4. Supplied. The video signal output from the video detector 4 is supplied to a VBI data slicer 16 via a low-pass filter LPF 15 and text information inserted into a received stream, that is, VBI,
The data is extracted. The VBI data includes an electronic program guide E
PG information is included, and the information of the electronic program guide EPG is sequentially stored in the memory 11B in the microcontroller 11. On the other hand, the information of the program information table PSI is also included in the VBI data, and is stored in the memory 11B in the microcontroller 11 via the VBI data slicer 16.

In order to execute format information extraction for detecting broadcast format information of a broadcast program in the electronic program guide EPG by extracting it from the program information table PSI information (that is, to execute format information extraction means), CPU 11A of microcontroller 11
Extracts the information of the electronic program guide EPG and the information of the program information table PSI periodically stored in the memory 11B, and extracts the broadcast format and the broadcast format included in the information of the program information table PSI. Based on the correspondence information with the program, the broadcast format information of each broadcast program in the electronic program guide EPG is extracted and associated (that is, the format information extracting means is executed), and the associated broadcast program is extracted. Classified according to the type of broadcast format information, for example, HDTV broadcast program and SD
The program is classified into two categories, that is, a TV broadcast program, and stored in the memory 11B as an edited electronic program guide. When the microcontroller 11 detects via the remote control receiver 12 that the viewer has instructed the remote commander 17 to display a list of broadcast programs in the electronic program guide EPG, the microcontroller 1
1 converts the edited electronic program guide stored in the memory 11B into a format that can be displayed on the CRT 10. Further, for example, the background color of the display column of the HDTV mode broadcast program is set to red, and the SDTV mode broadcast is set. The background color of the program display section is designated as green, and the graphics processor 13 is driven to generate a character font, a character color and each background color, and the electronic switches 8R, 8G, 8B and the CRT drivers 9R, 9G. , 9B, CRT1
As shown in FIG. 3, for example, the broadcast program is classified into HDTV mode broadcast programs and SDTV mode broadcast programs, the background color of the display field of the former broadcast program list is displayed in red, and the latter broadcast program list is displayed. The background color of the column is colored green and inserted into the video signal to be displayed on the display (that is, as a program display means, the broadcast program in the electronic program guide is displayed on the display in association with the broadcast format information).

In such a program display, the present invention is not limited to the case where the background color of the display column is changed according to the type of the broadcast format information, but the change is made so that the character color of the broadcast program name is changed. Alternatively, it may be specified that the broadcast format information is displayed with a symbol or the like that can be identified by a viewer attached to a broadcast program table. Alternatively, as described above, it may be specified that the broadcast format information is regrouped for each type and displayed.
Furthermore, when the viewer has specified the broadcast format information for displaying the broadcast program from the remote commander 17, the CPU 11 </ b> A of the microcontroller 11 that has detected the specification via the remote control receiving unit 12 stores the information in the memory 1.
Only the broadcast program of the designated broadcast format information may be selected from the edited electronic program table stored in 1B and converted to a format that can be displayed on the CRT 10 (that is, the selected program display means). Only the broadcast program of the broadcast format information selected by the viewer is extracted from the edited electronic program guide and displayed).

Next, a third embodiment of the digital television receiver according to the present invention will be described with reference to FIG. FIG. 4 shows an example in which the display color of the channel number is changed and displayed according to the type of the broadcast format information of the received stream. For example, when the broadcast format information of the received stream is in the HDTV mode, the display color of the channel number is displayed in red, and in the SDTV mode, the display color of the channel number is displayed in green. Therefore, since the channel display color is changed according to the type of the broadcast format information, the viewer can recognize the broadcast format information of the currently viewed broadcast program. To check the broadcast format information of the broadcast program.

The operation of the embodiment shown in FIG. 4 for changing the display character color of the display channel in accordance with the type of the broadcast format is shown in the functional block diagram of FIG. 1 as follows. By the same operation as that described in the first embodiment, the microcontroller 1
1 is supplied with the information of the broadcast format included in the received stream, the CPU 11A of the microcontroller 11 identifies, for example, whether the broadcast format information is the HDTV mode or the SDTV mode, and responds. By specifying the display color of the channel number (ie, specifying the display character color of the display channel number according to the type of the broadcast format information as the channel display means), driving the graphics processor 13 4 is generated on the CRT 10 via the electronic switches 8R, 8G, and 8B and the CRT drivers 9R, 9G, and 9B.
As in the example shown in FIG. 1, a channel number of a display color corresponding to the type of broadcast format information is inserted into a video signal and displayed on a display.

[0035]

According to the digital television receiver of the present invention, the viewer himself / herself can change the setting of the output format to the CRT according to the change of the broadcast format information of the received stream. For example, if a broadcast program in the SDTV mode is
It is possible to up-convert to a resolution output format, down-convert an HDTV mode broadcast program to an SDTV resolution output format, and freely select a resolution.

[0036] In the digital television receiver according to any one of the third to sixth aspects of the present invention, the information of the received broadcast program list based on the electronic program guide EPG is converted into the broadcast program list according to the type of the broadcast format information. By classifying and displaying the broadcast program, or by changing the background color of the display column of the broadcast program or the character color of the broadcast program name and displaying the broadcast program, for example, each broadcast program can be in HDTV mode broadcast or SD broadcast.
The viewer can easily grasp the TV mode broadcast.

In the digital television receiver according to the present invention, the display character color of the channel number is changed according to the type of the broadcast format information, so that the viewer can view the current broadcast program broadcast. The format can be easily grasped. For example, if the current broadcast program is H
It is possible to easily determine whether the broadcast is the DTV mode broadcast or the SDTV mode broadcast.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating an example of an embodiment of a digital television receiver according to the present invention.

FIG. 2 is a diagram showing an example of a display screen for explaining the first embodiment of the digital television receiver according to the present invention.

FIG. 3 is a diagram showing an example of a display screen for explaining a second embodiment of the digital television receiver according to the present invention.

FIG. 4 is a diagram showing an example of a display screen for explaining a third embodiment of the digital television receiver according to the present invention.

[Description of Signs] 1 ... antenna, 2 ... tuner, 3 ... intermediate frequency amplifier,
4 ... Video detector, 5 ... Video amplification circuit, 6 ... Matrix circuit, 7 ... Color reproduction circuit, 8R, 8G, 8B ... Electronic switch, 9R, 9G, 9B ... CRT driver, 10 ... CR
T, 11: microcontroller, 11A: CPU, 1
1B: Memory, 12: Remote control light receiving unit, 13: Graphics processor, 14: Sync separation circuit, 15: Reduction filter, 16: VBI data slicer, 17: Remote commander, 21: Voice detector, 22: Voice amplifier , 23 ...
Speaker.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 7/083 7/087 7/088

Claims (7)

[Claims] 1. A digital television receiver for setting a decoding output mode in accordance with broadcast format information included in a received stream of digital television broadcast, and decoding and outputting the received stream. Determining means for determining whether or not the broadcast format information included in the broadcast format information has been changed; and, if it has been determined that the change has been made, inserting the fact into a video signal and displaying the result on a display; And a mode selecting means for allowing the viewer to select an arbitrary decoding output mode from a plurality of decoding output modes provided in advance and to set the decoding output mode of the received stream. Digital television receiver. 2. The digital television receiver according to claim 1, wherein the decoding output modes provided in advance include two decoding output modes: a high-definition television display mode and a standard television display mode. A digital television receiver, comprising: 3. A video output means for setting a decoding output mode in accordance with broadcast format information included in a received stream of digital television broadcasting, decoding and outputting the received stream, and A digital television receiver having program information receiving means for receiving electronic program guide information to be received, wherein the broadcast format information of the broadcast program in the received electronic program guide information is stored in a table relating to the broadcast program included in the received stream. Format information extracting means for detecting by extracting from the information, and, based on the extracted broadcast format information, classifying the broadcast program list according to the type of the broadcast format information and inserting it into the video signal. And a program display means for displaying the program on a display. Revision receiver. 4. The digital television receiver according to claim 3, wherein the program display means inserts the broadcast program list into a video signal and displays the list on a display.
A digital television receiver, wherein a background color of a display column for each broadcast program is displayed in different colors according to a type of broadcast format information. 5. A video output means for setting a decoding output mode according to broadcast format information included in a reception stream of a digital television broadcast, decoding and outputting the reception stream, and comprising: A digital television receiver having program information receiving means for receiving electronic program guide information to be received, wherein the broadcast format information included in the received stream includes broadcast format information of a broadcast program in the received electronic program guide information. Format information extracting means for detecting by extracting from the information, and a selected program display for selecting only a list of the broadcast programs matching the type of broadcast format information specified by the viewer, inserting the list into the video signal, and displaying the selected program on the display And a digital television receiver. 6. The digital television receiver according to claim 3, wherein said broadcast format information extracted by said format information extracting means includes a high definition television display mode and a standard television. A digital television receiver, which is in one of display modes. 7. A video output means for setting a decoding output mode in accordance with broadcast format information included in a received stream of digital television broadcast, decoding and outputting the received stream, and selecting a video output means by a viewer. Channel display means for inserting a channel number into a video signal and displaying the same as a display channel number on a display, in accordance with a type of the broadcast format information, a display character color of the display channel number. A digital television receiver characterized by changing the following.