JP3882208B2 - Transmitting device and receiving device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transmission device and a reception device suitable for application to a broadcasting system or the like. Specifically, in addition to the main broadcast signal, multiple video materials produced from different viewpoints of the same program can be multiplexed and transmitted simultaneously, and identifiers for these video materials can be transmitted as additional information on the receiving side. By automatically selecting a channel in which the identifier specified in (1) matches the transmitted identifier, it is possible to enjoy a video from a viewpoint that suits the user's preference.
[0002]
[Prior art]
With the development of digital technology, an interactive integrated digital broadcasting system (referred to as an ISDB (Integrated Services Digital Broadcasting) system) in which various kinds of information including broadcast signals are digitized is being researched and developed in the broadcasting industry.
[0003]
More specifically, the ISDB system is used for not only current broadcast signals (standard television signals, high-definition signals), but also software and facsimile data, as well as multimedia information such as voice, text, graphics, and images. It is a broadcasting system in which each is digitized (encoded), integrated and multiplexed, and then subjected to a modulation process matching the transmission form for transmission.
[0004]
When various types of information including broadcast signals are integrated and multiplexed, in addition to these pieces of information, additional information used as control information on the receiving side can also be integrated and multiplexed at the same time. The integrated ISDB broadcast signal (digital signal) is transmitted using ground waves, satellite waves, optical cables, or the like.
[0005]
On the receiving terminal side, it is possible to receive the integrated ISDB broadcast signal, discriminate the target signal, display it on the monitor and enjoy it as a normal television broadcast. (Save) or transfer to another terminal. Further, if the received additional information is used, the received information can be used according to the user's preference, such as monitor control, recording control, and processing control on the monitored image. That is, an interactive broadcasting system can be constructed.
[0006]
[Problems to be solved by the invention]
Therefore, if this ISDB system is used, the service content for the user is improved and the more interactive broadcasting system can be constructed as the variety of additional information to be transmitted increases.
[0007]
Now, in the current broadcasting system, the received broadcast signal is simply received and demodulated and viewed on a TV monitor, and so on, so to speak, it is a passive and unilateral system, so the enjoyment of the user is limited. . For example, a drama on a television monitor is watching a compilation of multiple video materials. Based on the recorded video and audio material (called video material), the final film content (video and audio) The editing process is performed as follows. Therefore, the user can enjoy only one type of video and audio.
[0008]
However, even in the same program, such as a drama, there is a user participation type that demands to see the development of the drama from the viewpoint of the user's favorite characters, and that the story development itself differs depending on how it is viewed. A request is potentially present. As a response to such a demand, a broadcasting system is conceivable in which the same program is transmitted by multi-channel multiplex transmission, and only the channel designated by the user is selected and displayed. Since the above-mentioned ISDB broadcasting system handles multi-channel multiplex broadcast signals, the above-described broadcasting mode can be realized.
[0009]
In this way, in order to select or process a broadcast according to the user's preference or preference on the user side, it is necessary to predict what type of program will be broadcast on the user side, A considerable amount of energy will be spent on the selection, which will be burdensome.
[0010]
Therefore, the present invention can achieve such a problem, and allows the user to arbitrarily select and monitor a plurality of video materials having different viewpoints prepared in advance and designate the user. It automatically tracks the scene where the identifier matches the transmitted identifier, and can automatically select the channel that broadcasts the matching scene, thereby reducing the user's burden. .
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the transmission device according to the present invention described in claim 1, a first encoding means for encoding first program information corresponding to a broadcast program, and the first program information First additional information generating means for generating first additional information having identification information corresponding to each scene, and second program information corresponding to the broadcast program, for each scene arranged in time series Second encoding means for generating, and second additional information generating means for generating second additional information having identification information corresponding to each scene for each scene arranged in a time series in the second program information . At least first encoded information encoded by the first encoding means, first additional information generated by the first additional information generating means, encoded by the second encoding means Second encoded information and the second additional information And further comprising a transmission means for transmitting by multiplexing second additional information generated by the generating means.
[0012]
In the transmission apparatus according to the second aspect of the present invention, the transmission means packetizes the first and second encoded information, and adds the first and second packet information in each packet header in the packetized packet data. For each scene in the first program information and the second program information , identification information corresponding to each scene is inserted, multiplexed in units of transmission frames, and converted into a bit stream.
4. The transmission apparatus according to claim 3, wherein the first and second additional information generating means appear in each scene for each scene in the first and second program information . Identification information for identifying a person is generated.
5. The transmission apparatus according to claim 4, wherein when the broadcast program is a music image, the first and second additional information generation means are included in the first and second program information . For each scene, identification information for identifying a musical instrument corresponding to each scene is generated.
In the transmission device according to the fifth aspect of the present invention, the first and second additional information generating means may set a shooting angle of each scene for each scene in the first and second program information . The identification information for identification is generated.
[0013]
In the receiving apparatus according to the sixth aspect of the present invention , each scene is provided for each of a plurality of pieces of encoded information obtained by encoding a plurality of pieces of program information corresponding to a broadcast program, and scenes arranged in time series in the program information. An apparatus for receiving a broadcast signal transmitted by multiplexing additional information having identification information corresponding to the channel information, receiving a broadcast signal and selecting a specific broadcast signal; and A signal separating means for separating the specific broadcast signal selected by the means into at least first and second encoded information and additional information; and decoding the first encoded information into a specific broadcast program. First decoding means for outputting corresponding first program information, and second decoding means for decoding the second encoded information and outputting second program information corresponding to the specific broadcast program; , Sea arranged in time series in the first program information When the additional information having at least the identification information assigned to each scene arranged in series is supplied, with reference to the supplied the additional information in the identification information and the second program information is given for each, and a control means for outputting to the TV monitor and select the program information belongs scene corresponding to the additional information from at least the first program information and the second program information in response to a control signal input It is provided with.
[0014]
8. The receiving apparatus according to claim 7, further comprising an input means for inputting identification information, wherein the control means includes identification information inputted by the input means and at least the first and second program information. The first and second program information are selectively output to a television monitor each time a match with the identification information given to each scene is detected.
In the receiving apparatus according to the invention described in claim 8, wherein said control means, program information same identification information when present across each scene of the first and second program information, which has been selected just before Is continuously output to a television monitor.
The receiving device according to the present invention described in claim 9 is characterized in that the control means outputs a menu screen corresponding to a plurality of the identification information to the television monitor.
In the receiving device according to the invention described in claim 10, the control means combines at least a first divided screen of the first and second program information and outputs the first display mode, and at least the first and second a screen combining unit having a second display mode for outputting any one of the program information of the second program information in response to an input signal from the outside, to the screen combining unit, the first or second display And a control unit that transmits a control signal for selecting a mode.
The receiving device according to claim 11, wherein the screen composition unit outputs a menu screen corresponding to the plurality of identification information to the television monitor, and externally outputs one of the plurality of identification information. When a selection signal for selecting identification information is input, the control unit selects program information corresponding to a scene to which identification information that matches the one identification information is given, and is selected by the screen composition unit. The control signal for selecting the second display mode is transmitted so as to output the program information, and the screen composition unit outputs the selected program information to the television monitor in response to the control signal. Features.
13. The receiving device according to claim 12, wherein the screen composition unit outputs a menu screen for selecting the divided screen display to the television monitor, and a selection signal for selecting the divided screen display from the outside. Is input, the control unit transmits a control signal for selecting a first display mode for synthesizing and outputting at least the divided screens of the first and second program information to the screen synthesizing unit. The synthesizing unit synthesizes and outputs at least the divided screens of the first and second program information to the television monitor according to the control signal.
The receiving device according to claim 13, wherein the screen synthesis unit has a third display mode for synthesizing and outputting the other reduced screen to one of the first and second program information. It is characterized by having.
The receiving apparatus according to the fourteenth aspect of the present invention includes a remote control device that transmits a control signal for selecting the display mode to the control unit.
16. The receiving apparatus according to claim 15, wherein the identification information is identification information for identifying a character appearing in each scene in the first and second program information . .
17. The receiving apparatus according to claim 16, wherein when the specific broadcast program is a music video, the identification information is an instrument corresponding to each scene in the first and second program information . It is the identification information to identify.
In the receiving device according to the seventeenth aspect of the present invention, the identification information is identification information for identifying a shooting angle of each scene in the first and second program information .
[0015]
When it is confirmed that the same program is broadcast on a plurality of channels, the user selects an identifier (keyword) that matches his / her preference or preference while viewing the menu screen. The identifier may be a character or an actor when the broadcast program is a drama, or an instrument part when the broadcast program is a music program. In addition, when a picture is taken from a specific angle, a keyword indicating the picture angle is used.
[0016]
When an identifier is designated, it is discriminated from the identifier on the transmission side, and when there is the same identifier inserted in the scene, the channel is automatically selected. Therefore, for example, when an actor that the user likes appears, if this actor is designated as a keyword, a channel broadcasting a scene showing the actor is selected and displayed for each scene in sequence. As a result, the drama is developed mainly by the characters. If you want to watch a drama from another character's point of view, select another character. Then, even if it is the same program, it seems that the impression received will be quite different.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Subsequently, an embodiment of a transmission device and a reception device according to the present invention will be described in detail with reference to the drawings.
[0018]
FIG. 1 is a system diagram of a main part showing an embodiment of an ISDB transmitting apparatus 10 according to the present invention. In this example, the main information transmitted in an integrated manner is the same as that of a standard television signal. It is assumed that it is a broadcast signal of a multi-channel multiplex program that transmits a program using a plurality of channels. Additional information such as control information is added to each of them for multiplexing. Various kinds of additional information can be considered. For a standard television signal, a time code can be considered.
[0019]
Referring to FIG. 1, the video signal SVN of the standard television signal is supplied to the terminal 12a, and the audio signal SAN associated therewith is supplied to the terminal 12b. The encoding unit 14 performs appropriate encoding processing including compression and the like. Is given. In synchronization with this encoding process, the additional information generating means 16 operates to generate additional information such as control information. In this example, a time code is illustrated as additional information, and thus the time code generating unit 16 is configured. The encoded standard television signal and time code TC are supplied to the multiplexing unit 20 and multiplexed together with other information.
[0020]
Sources include broadcast signals for multi-channel multiplex programs in addition to standard television signals. The multi-channel multiplex program is assumed to be composed of 4 channels. In addition, this multi-channel multiplex program is a drama produced based on the viewpoint from the main characters (in this example, A, X, α, and A), and finally, including these characters, 1 It is assumed that the signal edited in the book program is not broadcast.
[0021]
Assuming these, there are four source sources as the video material, and the video materials S1 to S4 mainly composed of different characters produced from the respective viewpoints at the respective input terminals 24a to 24d and 26a to 26d. Is supplied (see FIG. 2). It is assumed that the main character of the video material S1 is A, and that many actors appear in addition.
[0022]
In FIG. 2A, it is assumed that the video material S1 is produced in which the sub-main characters B, C, and D appear in addition to the main character A. Similarly, in FIG. 3 (3), the main character is X, and is produced as a video material S2 composed of a plurality of semi-main characters Y, Z and A (here, A is a side role). In the video material S3 shown in FIG. 5A, α appears as a leading role, β, γ, and A and B appear as side roles. In the video material S4 shown in FIG. 7 (7), the former is the leading role, and the second and the second, and A appears as the side role.
[0023]
The video materials S1 to S4 are composed of video signals S1V to S4V and audio signals S1A to S4A, respectively. The video materials S1 to S4 are subjected to the same encoding process as described above by the corresponding encoding units 22A to 22D.
[0024]
In synchronization with this encoding process, the additional information generating means 28A to 28D are activated to generate additional information suitable for the video materials S1 to S4. The additional information is used as an identifier (selector, keyword) for selecting / processing or automatically selecting the video material. Specifically, in addition to the channel number, an identifier corresponding to the video material is used. Is used. In the case of a drama, the names of main characters, actors, etc. are considered as identifiers. When the video material is a music video such as orchestra or rock, the video material is produced in which the attributes of the conductor, the concert master, and the part of the musical instrument that plays the music are developed around each attribute. At that time, the attributes such as the conductor, the name of the conductor, the concert master, the name of the concert master, and the musical instrument can be used as the identifier.
[0025]
FIG. 2 shows an example of assigning an identifier when a drama is considered, and attribute information A, B, C, X, Y, α, A, B, etc. that function as identifiers of the video materials S1 to S4 are selected. . These attributes can be added while the video operator sees the video material while synchronizing with the corresponding scene of the video material (FIGS. 2 (2), (4), (6), (8)).
[0026]
The encoded information and additional information obtained from each are multiplexed in the multiplexing unit 20 shown in FIG. In the multiplexing unit 20, for example, a process is performed in which each piece of encoded information is packetized and multiplexed for error correction is multiplexed in units of transmission frames to form a bit stream. The types of additional information and main information described above can be inserted into a header (packet header) when packetized or inserted into a non-video period (such as a blanking period).
[0027]
The multiplexed data is modulated by the transmission unit 34 into an ISDB broadcast signal having a transmission form suitable for transmission means (for example, a broadcasting satellite), and in this example, the data is multiplexed by an up-converter 36 and a transmission antenna (parabolic antenna) 38. Sent to the broadcasting satellite.
[0028]
FIG. 3 shows an example of a receiving apparatus 40 according to the present invention for receiving the ISDB broadcast signal as described above.
[0029]
The satellite wave received by the receiving antenna (parabolic antenna) 42 is down-converted to a 1 GHz band by the down converter 44 and then supplied to the ISDB tuner 46 for channel selection processing. Therefore, the ISDB broadcast signal of a specific channel including the character broadcast is selected by the channel selection signal SC from the terminal 48.
[0030]
The selected ISDB broadcast signal is supplied to the signal separation unit 50 and separated into original main information and additional information. For example, when a specific channel of a standard television signal is selected, the standard television signal and additional information (time code or the like) associated with the specific channel are separated. The separated main information is supplied to the decoding unit 52 and subjected to decoding processing. The decoding unit 52 includes N decoding units 52A to 52N. As described above, when one program is configured by 4-channel multiplexing, at least four decoding units 52A to 52D are used, and the video materials S1 to S4 of the corresponding channels are supplied to perform decoding processing. Done at the same time.
[0031]
Since the decoding unit 52 is configured to be used in common for the main information, any one predetermined decoding unit 52 is selected when the program is not a multi-channel multiplex program.
[0032]
Of the video material, the decoded video signal is supplied to a screen composition unit 54 configured by a frame memory or the like. Further, the additional information separated by the signal separation unit 50 is decoded by the dedicated decoding unit 56 and then supplied to the screen synthesis unit 54 and the control unit 58, and the control from the control unit 58 while referring to the obtained additional information. Based on the signal, the screen composition unit 54 performs a predetermined screen composition process, and the result is displayed on the television monitor 60. As will be described later, the audio signal decoded by the decoding unit 52 described above is selected by the audio processing unit 62, and an audio signal (main audio signal or sub audio signal) corresponding to the image content being monitored is selected. Sound is emitted from the speaker 66 through the amplifier 64.
[0033]
The control unit 58 constituted by a microcomputer generates a control signal for changing the display mode and selecting the monitor contents by remote control from the commander 68. As shown in FIG. 4, for example, the commander 68 as an input device is provided with a channel selection numeric keypad (10 key) 72, a sequential channel selection switch 74, and a volume switch 76 in addition to a power switch 70, and further displays on the monitor 60. A mode selection switch 78 is provided. The cursor key 80 is a key for moving the cursor K displayed on the screen, and an identifier is designated.
[0034]
In the screen composition unit 54 described above, the following processing is performed under the intervention of the control unit 58, but the processing example is merely an example, and is not limited to the presentation example.
[0035]
When a standard television signal or the like is displayed, the screen is displayed as usual. When a multi-channel multiplex program is selected, first, in order to confirm what kind of video is transmitted from each channel, as described above, when the 4-channel configuration is used, a split screen display as shown in FIG. It becomes. A menu screen M is displayed at the lower end of the screen.
[0036]
In the menu screen M shown in FIG. 5, the selector is displayed so that the above-described plural identifiers A, B, C,... A selector (entire / divided) for selecting whether to enlarge and display one screen is displayed.
[0037]
In order to display each video material by dividing the screen into four as shown in FIG. 5, it is necessary to compress each video signal to ½ in both horizontal and vertical directions. Thinning processing can be used. Therefore, when the split display is selected, a control signal for compression processing is given to the screen composition unit 54, and the four-divided video signals (processed video signals) are arranged as shown in FIG. It will be output while being controlled.
[0038]
When one screen, for example, a screen related to the video material S1 is selected, an enlarged display as shown in FIG. 6 is displayed. In this video selection, since only the video material S1 is selected, for example, when it is a drama, it is possible to enjoy the drama development focusing on a specific character. Thus, even when a channel is selected, the personal preference is reflected.
[0039]
In the present invention, when a specific identifier is specified, a scene having the identifier is automatically selected and displayed. For this reason, the control unit 58 constantly monitors the additional information, performs a matching search with the identifier given from the commander 68 to the control unit 58, and finds that the same identifier exists as additional information in the broadcast scene. Immediately switch to the channel sending the scene immediately. For example, when attribute A is selected as an identifier, channel selection as shown in FIG. 2 (9) is made. By realizing automatic channel selection in this way, the burden of identifier selection on the user side can be greatly reduced.
[0040]
Here, in the example of FIG. 2, when the same attribute exists across a plurality of channels, the channel selected immediately before is continuously selected as it is. It is clear that the software can be configured to force change to the next channel instead of such selection. Further, the selection attribute can be easily confirmed by switching the area of the menu screen M indicating the selected attribute to another color.
[0041]
Although it does not exist in the menu, picture-in-picture processing for reducing and displaying another screen, for example, S2, as a sub-screen on the enlarged screen S1 as shown in FIG. 7 is also possible. In this case, since the development of the drama can be confirmed with another character as the subject, further interest in the drama is aroused.
[0042]
In the application example described above, the video material is divided according to the characters. For example, when creating a video developed for each musical instrument (part) and enjoying a multi-channel multiplex program, The video can be selected for each part, or two or more parts can be selected at the same time, and the screen can be combined to construct a music program full of realism by the user's own hands. Therefore, the video material is not limited, and an identifier is added according to the video material.
[0043]
【The invention's effect】
As described above, in the transmission device and the reception device according to the present invention, as one aspect of the broadcast signal , when a plurality of video materials produced from different viewpoints are transmitted as a single program by multi-channel multiplexing, Once a specific attribute related to a material is specified, a video material including this attribute can be automatically selected.
[0044]
According to this, even when watching a drama from different viewpoints due to changes in characters in the same program such as a drama, once the attribute is specified, the automatic tracking method is used thereafter, so the user can select the attribute. It has the feature that the burden of is greatly reduced. It is not necessary for the user to predict the contents of the broadcast program. In this way, since the user-intentional broadcast can be selected, a kind of user participation type entertainment broadcast can be realized, and the television broadcast can be enjoyed from various aspects. Therefore, the present invention is very suitable when applied to an ISDB system for digital broadcasting.
[Brief description of the drawings]
FIG. 1 is a system diagram of an essential part showing an embodiment of an ISDB transmission device according to the present invention.
FIG. 2 is a diagram illustrating a relationship between video material and attributes.
FIG. 3 is a system diagram of an essential part showing an embodiment of an ISDB receiver according to the present invention.
FIG. 4 is a configuration diagram illustrating a specific example of a commander.
FIG. 5 is a diagram illustrating an example of multi-channel division display.
FIG. 6 is a diagram illustrating an example of one-screen display.
FIG. 7 is a diagram illustrating an example of picture-in-picture.
[Explanation of symbols]
10 ISDB Transmitter 14, 22A-22D Encoding Unit 16 Time Code Generation Unit 20 Multiplexing Units 28A-28D Additional Information Generation Unit 46 ISDB Tuner 52, 56 Decoding Unit 54 Screen Synthesis Unit 60 Monitor

Claims (17)

First encoding means for encoding first program information corresponding to a broadcast program;
First additional information generating means for generating first additional information having identification information corresponding to each scene for each scene arranged in time series in the first program information ;
Second encoding means for encoding second program information corresponding to the broadcast program;
Second additional information generating means for generating second additional information having identification information corresponding to each scene for each scene arranged in time series in the second program information ;
At least the first encoded information encoded by the first encoding means, the first additional information generated by the first additional information generating means, and encoded by the second encoding means and second encoded information, and transmitting apparatus characterized by comprising a transmission means for transmitting by multiplexing second additional information generated by the second additional information generating means. The transmission means is
Packetizing the first and second encoded information;
For each scene in the first and second program information , identification information corresponding to each scene is inserted into each packet header in the packetized packet data,
The transmission apparatus according to claim 1, wherein the transmission apparatus multiplexes each transmission frame to form a bit stream. The first and second additional information generating means are
The transmission apparatus according to claim 1, wherein identification information for identifying a character appearing in each scene is generated for each scene in the first and second program information . When the broadcast program is a music video, the first and second additional information generating means are
The transmission apparatus according to claim 1, wherein identification information for identifying a musical instrument corresponding to each scene is generated for each scene in the first and second program information . The first and second additional information generating means are
The transmission apparatus according to claim 1, wherein identification information for identifying a shooting angle of each scene is generated for each scene in the first and second program information . A plurality of encoded information obtained by encoding a plurality of program information corresponding to a broadcast program, and additional information having identification information corresponding to each scene are multiplexed for each scene arranged in time series in the program information. An apparatus for receiving a broadcast signal to be transmitted,
Channel selection means for receiving the broadcast signal and selecting a specific broadcast signal;
Signal separating means for separating the specific broadcast signal selected by the channel selecting means into at least first and second encoded information and additional information;
First decoding means for decoding the first encoded information and outputting first program information corresponding to a specific broadcast program;
Second decoding means for decoding the second encoded information and outputting second program information corresponding to the specific broadcast program;
The additional information having at least the identification information assigned to each scene arranged in time series when the said identification information and said second program information is given for each scene arranged in series in the first program information is supplied, with reference to the supplied the additional information, and belongs from among at least the first program information and the second program information in response to a control signal input of the scene corresponding to the additional information program receiving apparatus characterized by comprising a control means for outputting to a television monitor by selecting the information. An input means for inputting the identification information,
The control means sequentially detects the first and the second each time a coincidence between the identification information input by the input means and at least the identification information provided for each scene in the first and second program information is detected. The receiving apparatus according to claim 6, wherein the second program information is selectively output to a television monitor. The control means includes
The same identification information when present across each scene of the first and second program information, according to claim 7, wherein the continuing the program information that has been selected immediately before and outputting the television monitor Receiver device . The control means includes
The receiving apparatus according to claim 6, wherein a menu screen corresponding to a plurality of the identification information is output to the television monitor. The control means includes
At least the first display mode to the split screen combining outputs of the first and second program information, and at least a second display to output any one of the program information of said first and second program information A screen composition unit having a mode;
The receiving device according to claim 6, further comprising: a control unit that transmits a control signal for selecting the first or second display mode to the screen synthesis unit in accordance with an input signal from the outside. . The screen composition unit outputs a menu screen corresponding to a plurality of the identification information to the television monitor,
When a selection signal for selecting one of the plurality of identification information is input from the outside,
The control unit selects the program information corresponding to the scene identification information coincides with the one of the identification information is applied, the second display to output the program information the selected on the screen combining unit Send a control signal to select the mode,
The receiving apparatus according to claim 10, wherein the screen composition unit outputs the selected program information to the television monitor in response to the control signal. The screen composition unit outputs a menu screen for selecting the split screen display to the television monitor,
When a selection signal for selecting the split screen display is input from the outside,
The control unit transmits a control signal for selecting a first display mode for synthesizing and outputting at least the divided screens of the first and second program information to the screen synthesis unit;
The receiving apparatus according to claim 10, wherein the screen composition unit synthesizes and outputs at least the divided screens of the first and second program information to the television monitor in accordance with the control signal. The receiving apparatus according to claim 10, wherein the screen composition unit has a third display mode in which one of the first program information and the second program information is combined with the other reduced screen and output. The receiving apparatus according to claim 10, further comprising a remote control device that transmits a control signal for selecting the display mode to the control unit . The receiving apparatus according to claim 6, wherein the identification information is identification information for identifying a character appearing in each scene in the first and second program information . When the specific broadcast program is a music video,
The receiving apparatus according to claim 6, wherein the identification information is identification information for identifying a musical instrument corresponding to each scene in the first and second program information . The receiving apparatus according to claim 6, wherein the identification information is identification information for identifying a shooting angle of each scene in the first and second program information .

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