JP2001024959A - Digital broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a channel to be selected while displaying a channel selection picture when the selection from plural channels is available with signal format transition. SOLUTION: The channel selection picture is prepared/outputted by a selection picture preparing means 109 and a recipient operates the channel selection picture so that the selection from plural channels is enabled. Further, decoded video, channel or program information is displayed while being synthesized with the channel selection picture so that channel selection is enabled visually.

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, and more particularly to a digital broadcast receiving apparatus for receiving and reproducing digital broadcasts in which a signal format such as a high definition system or a standard definition system changes for each program time zone. It is about.

[0002]

2. Description of the Related Art FIG. 9 is a block diagram showing an example of a functional configuration of a conventional digital broadcast receiving apparatus. In the conventional digital broadcast receiving apparatus 900, 101 is a signal input, 1
02 is a signal receiving unit that performs channel selection, digital demodulation, error correction, etc., 103 is a separating unit that separates a signal into an audio signal, a video signal, and additional information, 104 is an audio decoding unit that decodes an audio signal, and 105 is a video signal A video decoding unit for decoding a signal; 106, an additional information analysis unit for analyzing channel control information such as channel number, audio / video identification information, and channel / program information such as a channel logo mark, a program title, and program contents; An information screen creating unit for creating a program information screen; 110, a video synthesizing unit for synthesizing a decoded image or the like with the channel / program information screen;
Reference numeral 113 denotes an audio output, and 114 denotes a video output.

[0003] An operation example of the conventional digital broadcast receiving apparatus 900 when receiving a digital broadcast will be described.

In a conventional digital broadcast receiving apparatus 900, a signal input from a signal input 101 is subjected to channel selection, digital demodulation, error correction, and the like in a signal receiving section 102, and is transmitted to a separating section 103. The separation unit 103 separates the audio signal, the video signal and the additional information of the currently selected channel, and outputs the audio signal and the video signal to the audio decoding unit 104 and the video decoding unit 105, respectively. Sent to Additional information analysis unit 10
6 analyzes the channel control information and the channel / program information. The separated audio signal and video signal are decoded by the audio decoding unit 104 and the video decoding unit 105, respectively. The information screen creation unit 108 also provides
Create a channel / program information screen based on the program information.
The channel / program information screen is combined with the decoded image by the image combining unit 110 as necessary. The synthesized video is output to an external display device, such as a monitor, via the video output 114. The decoded audio is output to an external playback device, for example, a speaker or the like via the audio output 113.

[0005]

The current television broadcasting is transmitted in a signal format according to a standard definition system.
Transmission using a high definition signal format is also performed by using a broadcasting satellite (hereinafter, referred to as a BS). These broadcasts are mainly performed in the analog system, and the broadcast in the analog high-definition system is currently being tested for practical use on BS-9 (ch).

[0006] On the other hand, from the viewpoint of effective use of frequency and the development of digital information compression technology, digitalization of broadcasting is rapidly progressing. In Japan, a communication satellite (C
Digital broadcasting by S) has started. Future trends include BS digital broadcasting and terrestrial digital broadcasting.
It is scheduled to begin in prospect in 2000.

[0007] The above-mentioned digital information compression technology makes it possible to improve the picture quality and the number of channels of a broadcast. Can be transmitted plurally, and there is a possibility that these signal formats are switched and transmitted for each program time zone.

An object of the present invention is to enable a channel selection screen to be displayed by selecting a channel from a plurality of channels in accordance with a signal format transition in a digital broadcast receiving apparatus.

Another object of the present invention is to facilitate channel selection by a receiver by synthesizing channel / program information such as video of each channel and a logo mark with a channel selection screen. It is in.

A further object of the present invention is to display a selection screen to facilitate selection of audio / video when a selectable or selected channel is constituted by a plurality of audio / video ESs. Is to do.

[0011]

In order to achieve the above object, in the digital broadcast receiving apparatus according to the present invention, in the conventional digital broadcast receiving apparatus 900, the additional information analyzing means determines a channel number, a signal format, and a sound from the additional information. Analyzing channel control information including video identification information, the separating unit separates a plurality of videos, the video decoding unit decodes the plurality of videos simultaneously, and the video synthesizing unit synthesizes the plurality of videos. Further, in addition to each means of the conventional digital broadcast receiving apparatus 900, a selection screen creation means for creating a channel selection screen, a storage means for storing channel / program information, etc., and a user input such as a remote controller operated by a receiver Means and channel control means for performing control related to channel selection based on user input and the channel control information.

With these means, the additional information analyzing means detects the transition of the signal format, and if it is possible to select a channel from a plurality of channels, the selection screen creating means creates a channel selection screen and receives The channel control means can select a channel based on the operation result of the user on the channel selection screen. Further, by creating the channel selection screen based on decoded video, channel / program information, and the like, visual channel selection becomes possible, and the above problem is solved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

A first embodiment of the present invention will be described.

The digital broadcast receiving apparatus according to the present embodiment receives a signal in which audio / video and additional information are multiplexed,
At the same time as outputting the separated and decoded audio and video, if it is possible to select a channel from a plurality of channels according to the transition of the signal format, a channel selection screen is displayed, and the receiver operates the channel selection screen to enable a plurality of channels. This makes it possible to easily select one channel from the channels.

FIG. 1 is a block diagram of a receiving apparatus according to a first embodiment of the present invention.

In FIG. 1, reference numeral 100 denotes a digital broadcast receiving apparatus main body; 101, a signal input; 102, a signal receiving unit for performing channel selection, digital demodulation, error correction, and the like; and 103, a signal separating and outputting an audio signal, a video signal, and an additional signal. A separating unit 104 for extracting information; an audio decoding unit 104 for decoding an audio signal;
Reference numeral 5 denotes a video decoding unit for decoding a video signal. Reference numeral 106 denotes channel control information such as a channel number, a signal format, audio / video identification information, and channel / program information such as a channel logo mark, a program title, and program contents. An additional information analysis unit for analyzing the channel control information and a channel / program information for each of the plurality of channels;
An information screen creation unit for creating a program information screen; 109, a selection screen creation unit for creating a channel selection screen; 110, a video synthesis unit for combining the channel / program information screen or the channel selection screen with video; A user input of a controller or the like; 112, a channel control unit for controlling channel selection based on the user input and the channel control information; 113, audio output;
Reference numeral 114 denotes a video output.

In FIG. 1, a signal input from a signal input 101 is subjected to channel selection, digital demodulation, error correction, and the like in a signal receiving section 102, and is transmitted to a separating section 103. The separation unit 103 separates the audio signal, the video signal, and the additional information of the currently selected channel, and separates the audio signal and the video signal into the audio decoding unit 104 and the video decoding unit 1, respectively.
At 05, the additional information is sent to the additional information analysis unit 106. The control information used as the additional information includes PMT (Progr
am Map Table: The audio and audio that make up the program being received
An identification number of a video or the like is described). The additional information analysis unit 106 analyzes the channel control information and the channel / program information. The analyzed channel control information and the analyzed channel / program information are stored in the storage unit 107.

In FIG. 1, when the additional information analysis unit 106 detects a transition of the signal format and, as a result, it is possible to select a channel from a plurality of channels, the selection screen creation unit 109
Creates a channel selection screen, and the channel selection screen is output via the video compositing unit 110. At this time, the image synthesized by the image synthesizing unit 110 can be a predetermined channel image of a plurality of channels, a blue-back screen, a still image of a channel before a signal format transition, and the like.

When the receiver selects one channel by the user input 111, the video signal of the selected channel is extracted by the signal receiving unit 102 and the separating unit 103 under the control of the channel control unit 112. The extracted video signal is decoded by the video decoding unit 105. The decoded video is output from the video output 114 via the video synthesis unit 110 again.

When the receiver selects one channel by the user input 111, the above-described channel selection processing is completed and one channel is displayed.

FIG. 3 shows an example of a display screen when a plurality of channels, especially three channels, can be selected in accordance with the transition of the signal format. Reference numeral 301 denotes an external display device for displaying an output screen of the present digital broadcast receiving device, 302 denotes a display screen of the external display device, 303 denotes a message screen accompanying a signal format transition, and 304 denotes a first list for displaying a list of selectable channels. The small screen, 305, 306, and 307 represent independently selectable channel buttons, and 308 represents a selection cursor.

In FIG. 3, for example, channel button 3
05, the channel number indicated by the channel button 305, ie, 200
It is assumed that the video of channel ch is displayed.

When the receiver moves the selection cursor 308 over the channel button 306 by performing an operation such as “move” of the user input 111, the channel number indicated by the channel button 306, ie, 2
The 01ch video is immediately displayed. Similarly, when the selection cursor 308 is moved over the channel button 307, the channel number indicated by the channel button 307, that is, the image of 202ch is immediately displayed.

When the receiver selects a channel, an operation such as "enter" of the user input 111 is performed on a channel button to be selected, and the selected channel is selected.
Is displayed.

According to the present embodiment, when the signal format changes and it is possible to select a channel from a plurality of channels, a channel selection screen is displayed, and the receiver operates the channel selection screen to select one of the channels. One channel can be easily selected.

A second embodiment of the present invention will be described.

The digital broadcast receiving apparatus according to the present embodiment receives a signal in which audio / video and additional information are multiplexed,
At the same time as outputting separated and decoded audio and video, if the signal format changes and it is possible to select a channel from multiple channels, the channel / program information and the channel selection screen are combined to allow multiple or all receivers. It is possible to visually select a channel.

FIG. 2 is a block diagram of a digital broadcast receiving apparatus according to a second embodiment of the present invention. Parts corresponding to those in the block diagram of FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

In FIG. 2, reference numeral 201 denotes a separating unit that separates a signal to extract an audio signal, a plurality of video signals and additional information, 202 denotes a video decoding unit that simultaneously decodes a plurality of videos from the plurality of video signals, and 203 denotes a decoding unit. And a channel / program information screen or a channel selection screen.

In FIG. 2, if the additional information analysis unit 106 detects a transition of the signal format and, as a result, it is possible to select a channel from a plurality of channels, the information screen creation unit 108
Creates a channel / program information screen from the channel / program information. The selection screen creation unit 109 creates a channel selection screen, and the video / synthesis unit 110 combines the channel / program information screen with the channel selection screen. At this time, the image can be synthesized by the image synthesizing unit 110, but the image can be a predetermined channel image of a plurality of channels, a blue-back screen, a still image of a channel before a signal format transition, and the like.

When the receiver selects a plurality of channels by user input 111, the video signals of the selected plurality of channels are extracted by signal receiving section 102 and separating section 114 under the control of channel control section 112. The plurality of extracted video signals are simultaneously decoded in the video decoding unit 202. The decoded plurality of videos are sent to the video combining unit 20.
3 is combined as one image. The synthesized video is output from the video output 114.

When the receiver selects a plurality of channels by the user input 111, the above-described channel selection processing is completed and the plurality of channels are displayed.

FIGS. 4 (a) and 4 (b) show the case where the signal format changes and a channel can be selected from a plurality of channels, especially three channels.
It is an example of a display screen in the case of selecting a channel using channel / program information. Parts corresponding to the display screen of FIG. 3 are denoted by the same reference numerals, and redundant description will be omitted.

4 (a) and 4 (b), reference numeral 401 denotes a select button for selecting at least one channel from the plurality of channels, and reference numeral 402 denotes an all select button for selecting all of the plurality of channels. , 403 are second small screens displaying a list of selectable channels, 404, 40
Reference numerals 5 and 406 denote a plurality of selectable channel buttons.
Is a display button for selecting and displaying the selected channel,
Reference numeral 408 indicates a selected cursor indicating that the item has been selected.

In FIG. 4A, when selecting a plurality of channels, the receiver moves the selection cursor 308 onto the selection button 401 by an operation such as “move” of the user input 111, and When an operation such as "determine" is performed, a second small screen 403 is displayed in FIG. 4B.

In FIG. 4B, for example, the selection cursor 308 is located on the channel button 404, and the channel number indicated by the channel button 404, ie, 2
It is assumed that the video of 00ch is currently displayed.

In order for the receiver to select the 200 ch, the receiver inputs the user input 1 on the channel button 404.
By performing an operation such as "decide" of No. 11, the 200ch is selected as one of the viewing channels. At this time, a selected cursor 408 indicating that the 200 ch has been selected is displayed on the selected channel button. Further, it is possible to switch between selection and non-selection as a viewing channel every time an operation such as “determination” of the user input 111 is performed on the channel button selected at this time.

Next, the recipient enters the "move" of the user input 111.
When the selection cursor 308 is moved to the channel button 406 and an operation such as "OK" is performed, the channel number indicated by the channel button 406, that is, 202ch is newly set as one of the viewing channels. Selected. At this time, a selected cursor 408 indicating that the channel 202 has been selected is displayed on the selected channel button.

At this time, it is possible to divide the screen into two and simultaneously display the images of the two selected channels 200ch and 202ch. Also, it is possible to divide the screen further and display it each time the number of selected channels increases.

When the receiver selects a channel, an operation such as "move" of the user input 111 is performed, and the display button 4
07, the selection cursor 308 is moved to “OK”.
By performing such operations, the selected channel is selected and displayed.

At this time, even if the receiver does not perform a channel determination operation, it is also possible to automatically select and display a channel if there is no input for a predetermined period by means such as a timer (not shown).

In FIG. 4A, an all select button 402
When an operation such as "determination" of the user input 111 is performed above, it is possible to select and display all the channels.

In this example, channel numbers are used as symbols representing selectable channels in the first small screen 304 and the second small screen 403. Instead of the channel numbers, channel logos and program titles are used. It is also possible to use.

FIGS. 5A and 5B show an example of a screen display when a plurality of channels, particularly three channels, are selected. Parts corresponding to the display screen of FIG. 3 are denoted by the same reference numerals, and redundant description will be omitted.

5A and 5B, reference numeral 501 denotes a first simultaneous decoded image, 502 denotes a second simultaneous decoded image, 503 denotes a third simultaneous decoded image, and 504, 505, and 506 denote respective ones. Channel's channel logo, 507, 508, 50
Reference numeral 9 denotes a channel number of each channel.

In FIG. 5 (a), when the size of the image is changed and displayed, the size is given a higher priority in the order of selection, or a priority is given in ascending or descending order in the channel number. And so on.

In FIG. 5B, each display screen 501, 50
Although the channel logo and the channel number are combined on 2,503, a program title or the like can be displayed instead of the channel logo or the channel number. At this time, it is also possible to automatically delete the combined channel / program information after a predetermined time by means such as a timer (not shown).

According to this embodiment, when the signal format changes and it is possible to select a channel from a plurality of channels, the channel / program information and the channel selection screen are synthesized.
It may allow the receiver to visually tune to some or all channels.

A third embodiment of the present invention will be described.

The digital broadcast receiving apparatus according to the present embodiment receives a signal in which video and additional information are multiplexed,
At the same time as outputting the decoded audio and video, if the signal format changes and it is possible to select from multiple channels, by synthesizing the simultaneously decoded video of multiple channels and the channel selection screen, multiple This makes it possible to visually select all channels.

In FIG. 2, when the additional information analysis unit 106 detects a transition of the signal format and, as a result, it is possible to select a channel from a plurality of channels, the channel control unit 11
2 controls the signal receiving unit 102 and the separating unit 201 to extract a plurality of video signals, and the extracted plurality of video signals are simultaneously decoded in the video decoding unit 202. Further, the selection screen creation unit 109 creates a channel selection screen, and combines the plurality of videos decoded by the video synthesis unit 203 with the channel selection screen.

When the receiver selects at least one channel by the user input 111, the above-described channel selection processing is completed and the channel is displayed.

FIGS. 6 (a) and 6 (b) show the display in the case where the signal format changes and it is possible to select from a plurality of channels, especially three channels, and the channel is selected using the decoded video of the plurality of channels. It is an example of a screen. Figure 3, Figure 4 (a), Figure 4 (b),
Parts corresponding to the display screens of FIGS. 5A and 5B are denoted by the same reference numerals, and redundant description will be omitted.

In FIG. 6A, it is assumed that the selection cursor 308 is located on the first simultaneous decoded video 501, for example. In order to select the channel number pointed to by the first simultaneous decoded video 501, that is, 200ch, the receiver selects “decision” of the user input 111 on the first simultaneous decoded video 501.
By performing such operations, the 200 ch is selected as one of the viewing channels. At this time, a selected cursor 408 indicating that the 200 ch has been selected is displayed on the selected decoded video. Further, it is possible to switch between selection and non-selection as a viewing channel each time an operation such as “determination” of the user input 111 is performed on the decoded video selected at this time.

Next, the receiver inputs “move” in the user input 111.
When the operation such as “decide” is performed by moving the selection cursor 308 over the third simultaneous decoded image 503 and performing the operation such as
2ch is newly selected as one of the viewing channels.

At this time, the above-mentioned 2
Selected cursor 408 indicating that 02ch has been selected
Is displayed.

When the receiver selects a channel, an operation such as “move” of the user input 111 is performed, and the display button 4
07, the selection cursor 308 is moved to “OK”.
By performing such operations, the selected channel is selected and displayed.

At this time, even if the receiver does not perform a channel determination operation, it is also possible to perform automatic channel selection and determination by a means such as a timer (not shown) when there is no input for a predetermined period.

In FIG. 6A, an all select button 402
When an operation such as "determination" of the user input 111 is performed above, it is possible to select and display all the channels.

In FIG. 6A, a plurality of decoded pictures are used as symbols representing selectable channels. Instead of the plurality of pictures, a channel logo mark or a program title included in channel / program information is used. Etc. can be selected. In FIG. 6B, a channel logo mark is used as a symbol representing a selectable channel.

6 (a) and 6 (b) are the same as those in FIG. 5 (a) and FIG. 5 (b).

Next, FIGS. 7A and 7B show examples of channel selection screen display in various forms in this embodiment. FIGS. 3, 4 (a), 4 (b), 5 (a), 5 (b), 6 (a),
Parts corresponding to the display screen of FIG. 6B are denoted by the same reference numerals, and redundant description will be omitted.

In FIGS. 7A and 7B, reference numeral 701 denotes a program title and broadcast time, and 702 denotes program content information.

If the signal format changes and it is possible to select from a plurality of channels, especially three channels, the screen is divided into four in FIGS. 7 (a) and 7 (b), and simultaneously decoded video is displayed on three of them. A channel / program information screen including a channel logo, a program title, program contents, and the like relating to the channel indicated by the selection cursor 308 is synthesized and displayed on the remaining one screen. The channel information screen is updated whenever the receiver selects a channel.

7 (a) and 7 (b) are the same as those in FIG. 5 (a) and FIG. 5 (b).

According to the present embodiment, when the signal format changes and channel selection from a plurality of channels is possible, simultaneous decoding of the video of the plurality of channels and the channel selection screen allows at least one receiver to be selected. The above or all channels can be visually selected.

A fourth embodiment of the present invention will be described.

The digital broadcast receiving apparatus of this embodiment receives a signal in which video and additional information are multiplexed,
If the signal format changes and it is possible to select a channel from multiple channels at the same time as outputting the decoded audio and video, select the channel indicated by the previously stored channel number without operating the receiver. Is what makes it possible.

In FIGS. 1 and 2, the additional information analysis unit 106
Detects the transition of the signal format, and as a result, when it is possible to select a channel from a plurality of channels, the channel control unit 112 refers to the channel number stored in the storage unit 107 in advance and selects the channel indicated by the channel number. Bureau.

According to the present embodiment, when the signal format changes and channel selection from a plurality of channels is possible, it is possible to select the channel indicated by the previously stored channel number without operating the receiver. It is possible.

The figures used for describing all of the above embodiments
4 (a), FIG. 4 (b), FIG. 6 (a), FIG. 6 (b), FIG. 7 (a), FIG. 7 (b), tuning from three channels, or FIG. 5 (a), Figure 5
In (b), an example is shown in which three channels are displayed, but the number of channels handled by this is not particularly limited to three.

A fifth embodiment of the present invention will be described.

The digital broadcast receiving apparatus in this embodiment receives a signal in which audio / video and additional information are multiplexed,
At the same time that the separated and decoded audio and video are output, the channels that can be selected or the channels selected by the receiver, etc.
When configured by video ES, an ES selection screen is displayed, and the receiver operates the ES selection screen,
It is possible to select at least one or all of the viewing audio / video ESs from the plurality of audio / video ESs.

In FIGS. 1 and 2, the additional information analysis unit 106
Analyzes the audio / video ES that constitutes the channel that can be selected due to the transition of the signal format or the channel that the receiver has selected, and as a result, when it is possible to select from a plurality of audio / video ESs, The selection screen creation unit 109
An S selection screen is created, and the ES selection screen is displayed on the video synthesizing unit 1.
It is output via 10.

Here, in addition to the transition analysis of the signal format, the additional information analysis unit 106 analyzes that a selectable or tuned channel is composed of a plurality of audio / video ESs, 109 can apply all channel selection operations of the first to fourth embodiments to the audio / video ES selection operation only by creating an ES selection screen instead of creating a channel selection screen. .

That is, the receiver operates the ES selection screen to select at least one or all or all audio / video ESs.
Can be selected. The ES selection screen displays each audio
It can be created based on information about the video ES or the decoded video ES.

As an example to which the above-mentioned application is applicable, the channel selection operation in the second embodiment is performed by using the audio / video E
FIG. 8 shows a display screen when applied to the selection operation of S. Parts corresponding to the display screens in FIGS. 3, 4A and 4B are denoted by the same reference numerals, and redundant description will be omitted.

In FIG. 8, reference numeral 801 denotes a message screen associated with ES selection, and reference numerals 802, 803, and 804 denote individually selectable video ES buttons.

Thus, the receiver can view audio / video ES
Can be selected in the same manner as channel selection.

According to the present embodiment, when a channel which can be selected by a transition of a signal format or a channel which is selected by a receiver is constituted by a plurality of audio / video ESs, an ES selection screen is displayed. Then, when the receiver operates the ES selection screen, the plurality of voices /
At least one or all of the viewing audios from the video ES
It is possible to select the video ES.

Although all of the above embodiments have been described with respect to a single digital broadcast receiving apparatus, the present invention can be similarly applied to a device such as a TV or VTR having a built-in function of the digital broadcast receiving apparatus. It is possible.

[0083]

According to the present invention, in a digital broadcast receiving apparatus, when a signal format changes and a channel can be selected from a plurality of channels, a channel selection screen is displayed so that a channel can be easily selected by a receiver. It is possible to

Further, by combining the channel / program information such as the video and logo of each channel with the channel selection screen, it is possible to facilitate the channel selection by the receiver.

Further, when a selectable or selected channel is constituted by a plurality of audio / video ESs, a selection screen can be displayed to facilitate selection of audio / video.

[Brief description of the drawings]

FIG. 1 is a block diagram of a receiving device according to first, fourth, and fifth embodiments of the present invention.

FIG. 2 is a block diagram of a receiving device according to second, third, fourth, and fifth embodiments of the present invention.

FIG. 3 is an example of a channel selection screen displayed at the time of channel selection in the first embodiment of the present invention.

FIG. 4A is an example of a first channel selection screen displayed at the time of channel selection in the second embodiment of the present invention. (b) is an example of a second channel selection screen displayed at the time of channel selection in the second embodiment of the present invention.

FIG. 5A is an example of a first display screen displayed when a channel is determined in the second and third embodiments of the present invention. (b) in the second and third embodiments of the present invention,
It is a 2nd example of a display screen displayed at the time of channel determination.

FIG. 6A is an example of a first channel selection screen displayed at the time of channel selection in the third embodiment of the present invention. (b) is a second channel selection screen example displayed at the time of channel selection in the third embodiment of the present invention.

FIG. 7A is an example of a third channel selection screen displayed at the time of channel selection in the third embodiment of the present invention. (b) is a fourth channel selection screen example displayed at the time of channel selection in the third embodiment of the present invention.

FIG. 8 is an example of an ES selection screen displayed when a viewing ES channel is selected in the fifth embodiment of the present invention.

FIG. 9 is a block diagram of a conventional receiving device.

[Description of Reference Numerals] 100 ... Digital broadcast receiving apparatus according to the present invention, 10
1 ... signal input terminal 102 ... signal receiving unit, 103
... Separator, 104 ... Speech decoder, 105 ...
Video decoding unit, 106 ... additional information analysis unit, 107 ...
・ Storage unit, 108 ・ ・ ・ Information screen creation unit, 109 ・ ・ ・
Selection screen creation unit, 110 ... Video synthesis unit, 111 ...
-User input, 112 ... channel control unit, 113
... Audio output, 114 ... Video output, 201 ...
Separation unit, 202: video decoding unit, 203: video synthesis unit, 301: external display device, 302: display screen of the external display device, 303: message screen accompanying signal format transition, 304: first small screen, 3
05 ... Channel button that can be selected independently (200c
h), 306... independently selectable channel button (201 ch), 307... independently selectable channel button (202 ch), 308.
401 ... select button, 402 ... all select button,
403: second small screen, 404: multiple selectable channel buttons (200 ch), 405: multiple selectable channel buttons (201 ch), 406
..Multiple selectable channel buttons (202ch)
407: display button, 408: selected cursor, 501: first simultaneous decoded image, 502: second simultaneous decoded image, 503: third simultaneous decoded image,
504: Channel logo mark (200 ch), 5
05 ... channel logo mark (201 ch), 50
6 ... Channel logo mark (202ch), 507
... channel number (200ch), 508 ... channel number (201ch), 509 ... channel number (202ch), 701 ... program title and broadcast time, 702 ... program content information, 801・ ・
Message screen associated with ES selection, 802: multiple video ES buttons (video 1), 803 ... multiple video ES buttons (video 2), 804 ...
Video ES button (Video 3) with multiple selections, 900
-A conventional digital broadcast receiving device.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/035 (72) Inventor Takumi Okamura 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Digital Hitachi, Ltd. Inside the Media Development Division (72) Inventor Hiroyuki Koeda 292, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside Digital Media Development Division, Hitachi, Ltd. (72) Inventor Takanori Eda 292, Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa, Japan (72) Inventor Naoki Fujimatsu 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term (reference) 5C025 BA01 BA25 BA27 BA28 CA06 CA09 CB05 CB08 CB09 DA01 DA04 5C063 AA01 AA06 AB03 AC01 AC05 AC10 CA23 CA40 DA03 DA07 EB33 EB38 5K061 AA09 BB06 BB07 BB10 DD02 DD11 HH08 JJ07

Claims (9)

[Claims] 1. In a plurality of predetermined channels,
A digital broadcast receiving apparatus for receiving and reproducing digital broadcasting in which a signal format such as a high-definition system or a standard-definition system changes for each program time zone, and receives the signal to perform channel selection, digital demodulation, error correction, and the like. Signal receiving means, separating means for separating a signal output from the signal receiving means into an audio signal, a video signal and additional information, audio decoding means for decoding an audio signal output from the separating means, Video decoding means for decoding the video signal output from the means, and additional information analysis means for analyzing channel control information including channel number, signal format, audio / video identification information from the additional information output from the separation means, Storage means for storing the channel control information for each of the plurality of channels, and a selection screen for creating a channel selection screen. Surface creating means, video synthesizing means for synthesizing the channel selection screen with video and the like, user input means such as a remote controller operated by a receiver, and control relating to channel selection based on user input and the channel control information. The additional information analysis means detects the transition of the signal format,
As a result, when it is possible to select a channel from a plurality of channels, the selection screen creation means creates a channel selection screen, and based on the operation result of the channel selection screen by the receiver, the channel control means selects one channel. A digital broadcast receiving apparatus characterized in that it has been made possible. 2. The digital broadcast receiving apparatus according to claim 1, wherein said channel control means is capable of selecting at least two or all channels. 3. The digital broadcast receiving apparatus according to claim 1, wherein said additional information analysis means analyzes channel / program information including a channel logo mark, a program title, program contents, and the like, and said storage means includes: An information screen creating unit that stores the channel / program information for each channel, and creates a channel / program information screen from the channel / program information, wherein the video combining unit combines the channel selection screen and the channel / program information screen A digital broadcast receiving apparatus characterized in that it has been made possible. 4. The digital broadcast receiving apparatus according to claim 2, wherein said separating means separates a plurality of video signals, said video decoding means decodes said plurality of video signals simultaneously, and said video synthesizing means outputs said channel. A digital broadcast receiving apparatus wherein a selection screen and a plurality of decoded images can be combined. 5. The digital broadcast receiving apparatus according to claim 3, further comprising information screen creating means for updating / creating a channel / program information screen every time a receiver selects a channel, wherein said video synthesizing means comprises: A digital broadcast receiving apparatus, wherein a program information screen can be combined with the channel selection screen or video. 6. The digital broadcast receiving apparatus according to claim 1, wherein the storage means stores a preset channel number among the plurality of channels, and can select a channel from the plurality of channels according to a transition of a signal format. Wherein the channel control means is capable of selecting a channel indicated by the channel number. 7. The digital broadcast receiving apparatus according to claim 1, wherein said additional information analysis means comprises an audio / video element constituting a channel which can be selected by a transition of a signal format. If a channel is composed of a plurality of audio / video ESs as a result of analyzing a mental stream (hereinafter, an elementary stream is referred to as an ES), the selection screen creating means creates an ES selection screen, and A digital broadcast receiving apparatus, wherein the channel control means can select at least one or all audio / video ESs by a receiver operating a selection screen. 8. The digital broadcast receiving apparatus according to claim 7, wherein said additional information analyzing means analyzes an audio / video ES constituting a channel selected by a receiver. 9. A digital broadcast receiving apparatus for receiving a digital broadcast whose signal format changes over time, detecting means for detecting a change in the signal format and detecting whether a plurality of channels can be selected. And a selection screen creating means for creating a channel selection screen when the plurality of channels can be selected, and an arbitrary channel can be selected by a user operation on the channel selection screen. A digital transmission / reception device characterized by the above-mentioned.