JP2004207831A - Digital broadcast transmitting/receiving method and apparatus, proceeding subtitle transmitter, proceeding condition image transmitter, and computer software - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast transmitting/receiving method and apparatus, a proceeding subtitle transmitter, a proceeding image transmitter, and a computer software, which display the proceeding of a program just until now on the screen, when an audience selects a channel of the program on the way of the program, thereby transmitting/receiving subtitle information to precisely and quickly obtain the proceeding program. <P>SOLUTION: The digital broadcast transmitting method compression-multiplexes 106 videos and audios of a program, program information 101, etc., and transmits them. It adds proceeding subtitle data describing the proceeding of the program until its broadcasting time and its identification value to a data part 205 and identification information 206 in a header 204 of subtitle information, respectively. Thus, it compression-multiplexes and transmits the proceeding subtitle information, together with the videos and audios of the program, program information, etc. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital broadcast transmission / reception method and apparatus, a progress status subtitle transmission device, a progress status screen transmission device, and computer software, and a subtitle broadcast transmission / reception method and a digital broadcast transmission / reception device synchronously displayed with video and audio of a program. In particular, the present invention relates to a system for transmitting and receiving program progress information using captions and a digital broadcast transmitting and receiving apparatus.
[0002]
[Prior art]
In the current television broadcasting, closed caption broadcasting is performed for the hearing impaired or the elderly, in which the words of the performers are displayed as text information in synchronization with video and audio. Subtitle broadcasting is also performed in digital broadcasting represented by BS / CS digital broadcasting. FIG. 2 shows a digital stream of subtitle broadcasting in digital broadcasting. As shown in FIG. 2, in subtitle broadcasting, a video signal, an audio signal, subtitle information, and the like are time-multiplexed in one digital stream. 2, reference numeral 201 denotes a video packet obtained by packetizing a compressed video signal, 202 denotes an audio packet obtained by packetizing a compressed audio signal, and 203 denotes a caption packet obtained by packetizing subtitle information. The caption packet 203 can be divided into a header section 204 and a data section 205. The header section 204 includes identification information 206 indicating the content of the data section 205. The data section includes a bitmap in addition to normal subtitle data (hereinafter, referred to as “normal subtitle data”). Various data such as data, additional voice data, and external character data are described.
[0003]
A method for displaying subtitles in subtitle broadcasting will be described below. FIG. 3 is a block diagram showing a configuration of a subtitle broadcast transmitting / receiving apparatus in digital broadcasting. In FIG. 3, reference numeral 100 denotes the entire transmission device, 101 denotes a program material serving as a subtitle program material, 102 denotes an audio encoding unit that compresses and encodes audio obtained from the program material 101, and outputs the audio as an audio signal. A video encoding unit 104 that compresses and encodes the video obtained from the program material 101 and outputs the video signal as a video signal; and a caption generation unit 104 that converts the performer's dialogue and the like obtained from the program material 101 into subtitle data and outputs it as subtitle information , 106 are a signal multiplexing unit for time-division multiplexing the audio signal, the video signal, and the caption information output from the audio coding unit 102, the video coding unit 103, and the caption generation unit 104, and 107 is the signal multiplexing unit 107. A modulation unit 108 that modulates the multiplexed signal output from and outputs it as a digital broadcast signal is a digital broadcast signal output terminal. The output digital broadcast signal is transmitted to the receiving side via a wireless or wired transmission path such as a broadcasting satellite, cable, or the Internet. 150 is an entire receiving apparatus, 151 is a digital broadcast signal input terminal, 152 is a tuner demodulator that performs channel selection, demodulation, and the like, 153 is an audio signal encoded from the digital signal selected by the tuner demodulator 152, A multiplex signal separating unit 154 for separating the video signal and the subtitle information is an audio decoding unit for decoding the audio signal separated by the multiplex signal separating unit 153 into an original audio signal, 155 is an audio signal output terminal, and 156 is A video decoding unit for decoding the video signal separated by the multiplex signal separation unit 153 into an original video signal, 157 is a caption analysis unit for analyzing the caption information separated by the multiplex signal separation unit 153, and 159 is a video decoding unit. An OSD (on-screen display) processing unit for synthesizing the video decoded in 156 and the subtitle analyzed in the subtitle analysis unit 157, 160 is an OSD processing unit. An output terminal of the output subtitles precomposed video signal from the section 159.
[0004]
Subtitle information generated from the program material on the transmission side is synchronously multiplexed with a video signal and an audio signal and transmitted. After being separated again as caption information on the receiving side, the caption analyzing unit 157 analyzes the caption data. The subtitles obtained as a result are combined with the video as an OSD and displayed. In digital broadcasting, subtitle broadcasting is realized through the above procedure.
[0005]
By the way, when the viewer selects a certain program from the middle, the progress of the program until immediately before selecting the program (for example, if it is a drama program, it is a rough line up to the present and a sports program) In such a case, it is difficult to immediately grasp the progress of the game so far. It is possible to grasp the progress of the program to some extent by checking on-screen the program description using the TV column of the newspaper or the program information multiplexed with video and audio. Lack.
[0006]
Conventionally, as a method of grasping the progress of a program, a description of a flow of a sentence that is smooth for the viewer is generated from the connection and relevance before and after the description generated in some way from each video scene of the program without a sense of discomfort for the viewer. (For example, see Patent Document 1). Further, there is a method in which a broadcast program is divided into a plurality of scenes, and a digest for each scene is transmitted to a receiving device to obtain a digest in accordance with the progress of the program (for example, see Patent Document 2). However, in this method, it is necessary to record a program in advance in order to obtain a fragmentary character string that describes each video scene used for generating a description and its contents, or to keep watching from the start of the program. In such a case, when a channel is switched one after another to search for a program to be viewed from now on, a description of the program cannot be obtained.
[0007]
[Patent Document 1]
JP 2001-275058 A
[Patent Document 2]
JP 2001-44948 A
[0008]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and when a viewer selects a program from the middle, the program progress status is displayed on the screen up to immediately before the program is selected. It is an object of the present invention to provide a digital broadcast transmission / reception method and apparatus capable of transmitting and receiving subtitle information for grasping the progress, a progress subtitle transmitter, a progress screen transmitter, and computer software.
[0009]
[Means for Solving the Problems]
The above-mentioned problem is solved on the transmitting side by: audio encoding means and video encoding means for compressing and encoding audio and video obtained from program material and outputting them as audio and video signals; A normal caption generating means for converting caption data into caption data and outputting it as caption information, and a progress status caption generating means for outputting caption data as caption data while updating the progress of the program obtained from the program material at any time, A signal multiplexing unit that time-multiplexes the normal subtitle information and the progress subtitle information output from the normal subtitle generation unit and the progress subtitle generation unit together with an audio signal and a video signal, and a multiplex signal output from the signal multiplexing unit Modulating means for modulating the signal and outputting it as a digital broadcast signal; Tuner demodulation means, multiplexed signal separation means for separating encoded audio signals, video signals, and subtitle information from digital signals selected by the tuner demodulation means, and audio separated by the multiplexed signal separation means. Signal and video signal, audio decoding means and video decoding means for decoding the original audio signal and video signal, respectively, caption analysis means for analyzing the caption information separated by the multiplex signal separation means, and from the caption analysis means Based on the acquired subtitle identification information, a subtitle control unit that controls whether the subtitle is displayed and an OSD processing unit that combines the video decoded by the video decoding unit and the subtitle analyzed by the subtitle analysis unit are provided. This can be solved by:
[0010]
That is, the present invention relates to a digital broadcast transmission method for compressing and multiplexing the video and audio of a program, program information, and the like. This is a digital broadcast transmission method in which progress status subtitle data to be described and its identification value are respectively added, and the subtitle information of the progress status subtitles is compressed and multiplexed together with video and audio of a program, program information, and the like, and transmitted.
[0011]
The present invention also provides a digital broadcast receiving method for receiving compressed multiplexed data transmitted by the above digital broadcast transmission method and separating and decoding video, audio, program information, and the like of a program. Is a digital broadcast receiving method for separating subtitles of subtitles and displaying subtitles of the progress status of the program using subtitle information whose identification value indicates the progress status subtitles with reference to the identification information of the separated subtitle information.
[0012]
The present invention provides a digital broadcast transmitting apparatus for transmitting compressed multiplexed data according to the above digital broadcast transmitting method, wherein subtitle data is converted while updating the progress status of a program up to the time of broadcasting by using a program material being broadcast. The present invention is a digital broadcast transmitting apparatus including a progress status subtitle generating means for generating progress status subtitle information, and a signal multiplexing means for multiplexing subtitle information generated together with compressed video, audio, program information, and the like.
[0013]
Further, the present invention provides a progress status subtitle generating means for generating progress status subtitle information by converting subtitle data while updating the progress status of a program from time to time using program materials provided at the same time as broadcasting from a digital broadcast transmitting apparatus. And a transmitting means for transmitting, via a transmission path, progress status caption information up to the time of broadcasting requested by the digital broadcast receiving device.
[0014]
Further, the present invention provides a progress screen generating means for directly generating a progress screen while updating the progress of a program at any time using program materials provided at the same time as broadcasting from a digital broadcast transmitting apparatus, The progress screen transmitting apparatus includes a transmitting unit that transmits progress screen data up to the time of broadcasting requested by the receiving apparatus via a transmission path.
[0015]
The present invention also provides a digital broadcast receiving apparatus which receives compressed multiplexed data transmitted from the digital broadcast transmitting apparatus and separates and decodes video, audio, and program information of a program. Separation means for separating the subtitle information, subtitle analysis means for analyzing the separated subtitle information, subtitle control means for controlling the subtitle analysis means, and synthesis means for synthesizing video and subtitles analyzed in the subtitle analysis means A digital broadcast receiving apparatus having a function of displaying subtitles for the first time with respect to subtitle information in which the identification value of the identification information obtained by the subtitle control unit from the subtitle analysis unit when the program is selected is the progress status subtitle.
[0016]
Further, the present invention provides a digital broadcast receiving apparatus that receives compressed multiplexed data transmitted from a digital broadcast transmitting apparatus and separates and decodes video, audio, program information, and the like of a program, and separates subtitle information from the received compressed multiplexed data. A subtitle analyzing unit that analyzes the separated subtitle information, a subtitle control unit that controls the subtitle analyzing unit, and a combining unit that combines a video and the subtitle analyzed by the subtitle analyzing unit. At the time of selecting a program, after the subtitle control means multiplexes the transmitted progress subtitle information again by requesting transmission of the program progress subtitle information to the progress subtitle transmitting device with the compressed multiplexed data, The subtitle control unit has a function of displaying the subtitle for the first time for a subtitle whose identification value of the identification information obtained from the subtitle analysis unit indicates a progress status subtitle. It is a digital broadcast receiver.
[0017]
Also, the present invention provides a digital broadcast receiving apparatus that receives compressed multiplexed data transmitted from a digital broadcast transmitting apparatus and separates and decodes video, audio, program information, and the like of a program. And a function of requesting transmission of the progress screen data to the progress screen transmitting apparatus at the time of selecting a program and displaying the transmitted progress screen.
[0018]
Further, the present invention provides computer software used for a digital broadcast transmitting apparatus for transmitting compressed multiplexed data by the above digital broadcast transmitting method, wherein a program up to the time of broadcast is broadcasted by using a program material being broadcast. A progress subtitle generation function that converts subtitle data into subtitle data while updating the progress status as needed to generate progress subtitle information, and a signal multiplexing function that multiplexes subtitle information generated together with compressed video, audio, program information, etc. Computer software consisting of programs to be implemented
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described.
Embodiments of a digital broadcast transmission / reception method and apparatus, a progress subtitle transmitting apparatus, and a progress screen transmitting apparatus of the present invention will be described with reference to the drawings.
[0020]
Example 1 will be described. In FIG. 1, reference numeral 100 denotes the entire transmission apparatus, 101 denotes a program material serving as a subtitle program material, 102 denotes an audio encoding unit that compresses and encodes audio obtained from the program material 101, and outputs the audio as an audio signal. A video encoding unit 104 that compresses and encodes the video obtained from the program material 101 and outputs the video signal as a video signal; and a caption generation unit 104 that converts the performer's dialogue and the like obtained from the program material 101 into subtitle data and outputs it as subtitle information , 105 is a progress status caption generation unit that converts the progress status of the program obtained from the program material 101 into caption data while outputting the caption information as needed, 106 is the audio encoding unit 102 and the video encoding unit 103, The audio signal and the video signal output from the subtitle generator 104 and the progress subtitle generator 105, the normal subtitle information, and the progress, respectively. Signal multiplexing unit for time-axis multiplexing curtain information, 107 a modulation unit for outputting a multiplexed signal outputted from the signal multiplexing section 107 as a modulated digital broadcast signal, 108 is a digital broadcast signal output terminal. The output digital broadcast signal is transmitted to the receiving side via a wireless or wired transmission path such as a broadcasting satellite, cable, or the Internet. 150 is an entire receiving apparatus, 151 is a digital broadcast signal input terminal, 152 is a tuner demodulation unit that performs channel selection, demodulation, and the like, and 153 is a digital audio signal selected by the tuner demodulation unit 152, A multiplex signal separation unit 154 for separating video signals and subtitle information is an audio decoding unit for decoding the audio signal separated by the multiplex signal separation unit 153 into an original audio signal, 155 is an audio signal output terminal, and 156 is an audio signal output terminal. A video decoding unit for decoding the video signal separated by the multiplex signal separation unit 153 into an original video signal, 157 is a caption analysis unit for analyzing the caption information separated by the multiplex signal separation unit 153, and 158 is a caption analysis unit Based on the subtitle identification information 206 obtained from the subtitle 157, the subtitle control unit 159 controls whether or not the subtitle can be displayed. An OSD (On Screen Display) processing unit for synthesizing the subtitles analyzed by the subtitle analysis unit 157, an output terminal 160 for the subtitle synthesized video signal output from the OSD processing unit 159, and a display unit 161 for displaying the progress status subtitles Is a subtitle display setting terminal for setting to the subtitle control unit 158.
[0021]
As described above, in the data section 205 of the caption packet 203, various data such as bitmap data, additional audio data, and external character data are described in addition to the normal caption data. In this embodiment, a new data type “progress status subtitle data” is added to this data. This progress status subtitle data has the same data structure as the normal subtitle data, but differs in the content of the subtitle sentence described. Normally, the caption text of the caption data describes the current situation of the program such as the dialogue of the performer, which is updated and updated every moment, but the progress of the caption data includes the progress of the program up to the present. (For example, if it is a drama program, it is the rough line up to the present, if it is a sports program, the progress of the game up to the present, etc.) is updated and described at any time.
[0022]
FIG. 4 shows an example of a digital stream of subtitle broadcasting in which the progress subtitle data is packetized and multiplexed. As shown in the figure, a progress status subtitle packet 401 is multiplexed in addition to a video packet 201, an audio packet 202, and a normal subtitle packet 203.
[0023]
As described above, the progress status subtitle data is multiplexed with normal subtitle data, and if the progress status subtitle is displayed first when the program is selected on the receiving side, even if the program is selected from the middle, the The progress of the program up to just before can be grasped in detail and quickly.
[0024]
The process will be described with reference to the flowchart of FIG. FIG. 5 is a flowchart showing a process of displaying a progress subtitle first when a program is selected on the receiving side, and thereafter displaying a normal subtitle. When a program is first selected, the caption analysis unit 157 acquires the caption information separated by the multiplex signal separation unit 153 (S1). The caption analysis unit 157 extracts the caption identification information 206 from the header section 204 of the caption packet 203 and transmits the caption identification information 206 to the caption control unit 158. The caption control unit 158 determines from the caption identification information 206 whether or not the caption information is the progress caption (S2).
[0025]
If the subtitle information is progress subtitles (Yes in S2), and the progress subtitles have not been acquired at this stage (No in S3), the subtitle control unit 158 displays the progress subtitles only for the first time. Issues an instruction to the caption analyzing unit 157 to analyze the caption information (progress status caption) (S4). The subtitle analysis unit 157 analyzes the progress subtitle information, and the analyzed progress subtitle is combined with a video and displayed by the OSD processing unit 159 (S7). If the subtitle information is the progress subtitle (Yes in S2), and the progress subtitle has already been acquired at this stage (Yes in S3), there is no need to display the progress subtitle, and the next subtitle is displayed. Wait for information.
[0026]
If the subtitle information is not the progress subtitle (that is, the normal subtitle) (No in S2), and if the progress subtitle has already been acquired at this stage (Yes in S5), the subtitle information is displayed in order to display the normal subtitle. The caption control unit 158 instructs the caption analysis unit 157 to analyze the caption information (normal caption) (S6). The subtitle analysis unit 157 analyzes the normal subtitle information, and the analyzed normal subtitle is combined with a video in the OSD processing unit 159 and displayed (S7). If the subtitle information is not the progress subtitle (that is, the normal subtitle) (No in S2), and if the progress subtitle has not been acquired at this stage (No in S5), the subtitle information is displayed until the progress subtitle is displayed. Wait for the next subtitle information so that no subtitle is displayed.
[0027]
FIG. 6 shows an example of the display of the progress status subtitles. FIG. 6 shows a state in which a drama program has been selected from the middle of the program. As shown in the figure, progress subtitles (summary up to this point) are displayed first, and thereafter, normal subtitles are displayed, and conventional subtitle display is performed. The operation is the same. Of course, at this time, only the progress subtitles may be multiplexed and transmitted on the transmitting side, and after the progress subtitles are received and displayed on the receiving side, the program may be presented without subtitles.
[0028]
If the subtitle display setting terminal 161 is used, the subtitle control unit 158 may be set to display the progress subtitle each time the subtitle is updated.
[0029]
According to this embodiment, if the progress subtitle data is multiplexed with the normal subtitle data and the progress subtitle is displayed first when the program is selected on the receiving side, even if the program is selected from the middle, It is possible to grasp the progress of the program up to immediately before that in detail and quickly.
[0030]
Example 2 will be described with reference to FIG. 7, the configuration on the transmission side is the same as that in FIG. 3, and the configuration on the reception side is the same as that in FIG. That is, this embodiment shows a method for obtaining the same effect as that of the first embodiment by using the configuration on the transmission side in FIG.
[0031]
In FIG. 7, a progress status subtitle generation unit 105 is provided outside the transmitting apparatus and uses the program material 101 provided at the same time as the broadcast from the transmission side to update the progress status of the program up to the present time as needed. Data is output as subtitle information. Reference numeral 701 denotes a progress subtitle transmitting device that transmits the progress subtitle information in response to a request from the receiving side, and 702 denotes a network through which the output subtitle information is transmitted to the receiving side.
[0032]
When a program is first selected, the subtitle control unit 158 requests the progress subtitle transmitting device 701 to transmit the progress subtitle information of the selected program via the network 702. Upon receiving the request, the progress subtitle transmitting device 701 transmits the progress subtitle information to the receiving side via the network 702. The transmitted progress status subtitle information is multiplexed again with the digital stream transmitted from the transmission side, and becomes a digital stream including the progress status subtitle information as shown in FIG.
[0033]
The process of acquiring and displaying the progress status subtitles from this digital stream thereafter is the same as the process according to the flowchart of FIG. 5 in the first embodiment.
[0034]
When adding a new data type such as “progress status subtitle data” to the data portion 205 of the subtitle packet 203, first, the transmission side must cope with this addition, and the reception side that does not support this addition. Operation also becomes a problem. However, as in the present embodiment, the above-mentioned problem can be solved by keeping the configuration on the transmission side as conventional and transmitting the progress status subtitle information from outside using another transmission path.
[0035]
According to the present embodiment, while the configuration of the transmission side remains the same, the progress subtitle transmitting device that generates and transmits the progress subtitle from the program material provided at the same time as the broadcast from the transmission side, and the progress subtitle information Can be obtained by adding a network for transmitting to the receiving side to the entire configuration.
[0036]
Third Embodiment A third embodiment will be described with reference to FIG. This embodiment is different from the first and second embodiments in which a program progress status screen is displayed using subtitles. In this embodiment, a program progress status screen is directly generated based on a program material, and the screen data is transmitted and displayed. The method for is shown.
[0037]
In FIG. 8, reference numeral 801 denotes a progress screen generation unit for directly generating a progress screen while updating the progress of the program up to the present time as needed, using the program material 101 provided at the same time as the broadcast from the transmission side; Is a progress screen transmitting device for transmitting the progress screen data in response to a request from the receiving side, 803 is a transmission request for the progress screen data to the progress screen transmitting device 802, and the progress screen transmitting device 802 A progress screen control unit 804 for controlling the display of the progress screen received from the PC 804 is a screen display setting terminal for setting the display of the progress screen for the progress screen control unit 803.
[0038]
When a program is first selected, the progress screen control unit 803 requests the progress screen transmission device 802 via the network 702 to transmit the progress screen data of the program. Upon receiving the request, the progress screen transmitting apparatus 802 transmits the progress screen data to the receiving side via the network 702. The transmitted progress screen data is received by the progress screen control unit 803. Upon receiving the progress screen data, the progress screen control unit 803 transmits the progress screen data to the OSD processing unit 159. The OSD processing unit 159 suppresses the display of other OSDs such as normal subtitles, and combines the progress status screen with the video as an OSD and displays it.
[0039]
In the first and second embodiments, the progress of the program is displayed on the screen using the subtitle function. Therefore, it is impossible to display the progress of the program beyond the subtitle function. However, in the third embodiment, the screen data indicating the progress of the program is directly generated. Therefore, various progress screens can be displayed in comparison with the first and second embodiments. For example, if it is a drama program, it can be a rough screen including a photograph of the performer's face, and if it is a sports program, a game progress screen including a score table and various graphs can be displayed.
[0040]
If the screen display setting terminal 804 is used, the progress screen control unit 803 can be set to display the progress screen every time the progress screen is updated.
[0041]
According to the present embodiment, the configuration of the transmission side remains normal, and a progress status screen generation unit provided outside thereof for directly generating the progress status screen from the program material, and for transmitting the progress status screen data to the reception side Network and a progress screen control unit that receives the progress screen data and controls whether or not to display the progress screen data are added to the overall configuration to display a variety of progress screens compared to the first and second embodiments that use the subtitle function. be able to.
[0042]
As described above, according to the present invention, when a viewer selects a program from the middle, the progress of the program up to that point is displayed on the screen, so that the progress of the program can be grasped in detail and promptly. .
[0043]
In the above-described embodiment, the digital broadcast transmitting apparatus has been described. However, using the program material being broadcast, the progress of the program up to the time of broadcasting is updated as needed and converted into subtitle data to generate progress subtitle information. By using computer software that consists of a program that allows a computer to implement a situation subtitle generation function and a signal multiplexing function that multiplexes subtitle information generated together with compressed video, audio, and program information, the conventional digital The broadcast transmitting device can be the digital broadcast transmitting device of the present invention. The same applies to the digital broadcast receiving device, the progress subtitle transmitting device, and the progress screen transmitting device.
[0044]
【The invention's effect】
Advantageous Effects of Invention According to the present invention, when a viewer selects a program from the middle, subtitles for displaying the progress of the program up to that time on the screen so that the progress of the program can be grasped in detail and promptly. It is possible to obtain a digital broadcast transmitting / receiving method and device, a progress status subtitle transmitting device, and a progress status screen transmitting device capable of transmitting and receiving information.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a digital broadcast transmitting / receiving apparatus according to a first embodiment.
FIG. 2 is an explanatory diagram of a digital stream of subtitle broadcasting in digital broadcasting.
FIG. 3 is a block diagram showing a configuration of a subtitle broadcast transmitting / receiving apparatus in digital broadcasting.
FIG. 4 is an explanatory diagram of an example of a digital stream of subtitle broadcasting in digital broadcasting in which progress subtitle packets are multiplexed.
FIG. 5 is an explanatory diagram of an example of a flowchart showing a process in which a progress subtitle is displayed first when a program is selected on the receiving side, and thereafter, a normal subtitle is displayed.
FIG. 6 is an explanatory diagram of a display example of progress subtitles.
FIG. 7 is a block diagram illustrating a configuration of a digital broadcast transmitting / receiving apparatus according to a second embodiment.
FIG. 8 is a block diagram illustrating a configuration of a digital broadcast transmitting / receiving apparatus according to a third embodiment.
[Explanation of symbols]
100 overall transmitter
101 program material
102 Voice Encoding Unit
103 Video coding unit
104 Normal subtitle generator
105 Progress subtitle generator
106 signal multiplexing unit
107 Modulation unit
108 Digital broadcast signal output terminal
150 Entire receiver
151 Digital broadcast signal input terminal
152 Tuner demodulation unit
153 Multiplex signal separation unit
154 audio decoding unit
155 Audio signal output terminal
156 Video decoding unit
157 Subtitle analysis unit
158 Subtitle control unit
159 OSD processing unit
160 Video signal output terminal
161 Subtitle display setting terminal
201 Video Packet
202 voice packet
203 caption packet
204 Header
205 Data Division
206 Subtitle identification information
401 Progress Caption Packet
701 Progress subtitle transmission device
702 Network
801 Progress screen generation unit
802 Progress screen transmission device
803 Progress screen control unit
804 screen display setting terminal

Claims (9)

In a digital broadcast transmission method of transmitting a video and audio of a program by compressing and multiplexing the program information and the like,
Progress subtitle data describing the progress of the program up to the time of broadcasting and its identification value are added to the identification information of the data portion and the header portion of the subtitle information, respectively, and the subtitle information of the progress subtitle is added to the video or audio of the program. A digital broadcast transmission method characterized in that it is compressed and multiplexed with program information and transmitted. A digital broadcast receiving method for receiving compressed multiplexed data transmitted by the digital broadcast transmitting method according to claim 1 and separating and decoding video and audio of a program, program information, and the like,
Subtitle information is separated from the received compressed multiplexed data, and the identification value of the separated subtitle information is referred to, and the identification value is used to display the subtitle of the progress of the program using the subtitle information indicating the progress subtitle. Digital broadcast receiving method. A digital broadcast transmitting apparatus for transmitting compressed multiplexed data by the digital broadcast transmitting method according to claim 1,
Progress subtitle generating means for generating subtitle data and generating progress subtitle information by updating the progress of the program up to the time of broadcasting as needed using the program material being broadcast, and compressed video, audio, program information, etc. And a signal multiplexing unit for multiplexing the generated caption information. Progress subtitle generating means for generating progress subtitle information by generating subtitle data while updating the progress of the program as needed using program material provided at the same time as the broadcast from the digital broadcast transmitting device, and a digital broadcast receiving device Transmitting means for transmitting, via a transmission path, progress status caption information from the time of the broadcast to the requested broadcast time. Using a program material provided from the digital broadcast transmitting device at the same time as the broadcast, a progress status screen generating means for directly generating a progress status screen while updating the progress status of the program as needed, and a request from the digital broadcast receiving device. A progress screen transmitting apparatus, comprising: transmitting means for transmitting progress screen data up to the time of broadcasting via a transmission path. A digital broadcast receiving apparatus that receives compressed multiplexed data transmitted from the digital broadcast transmitting apparatus according to claim 3 and separates and decodes video and audio of a program, program information, and the like.
A separating unit that separates subtitle information from the received compressed multiplexed data, a subtitle analyzing unit that analyzes the separated subtitle information, a subtitle controlling unit that controls the subtitle analyzing unit, and a video that is analyzed by the subtitle analyzing unit. Combining means for combining captions, and having a function of displaying captions for the first time for caption information in which the identification value of the identification information obtained from the caption analyzing means by the caption control means at the time of selecting a program indicates the progress status caption A digital broadcast receiving device characterized by the above-mentioned. In a digital broadcast receiving apparatus that receives compressed multiplexed data transmitted from a digital broadcast transmitting apparatus and separates and decodes video and audio of a program, program information, and the like,
Separation means for separating caption information from the received compressed multiplexed data, caption analysis means for analyzing the separated caption information, caption control means for controlling the caption analysis means, and video and the caption analysis means And a synthesizing means for synthesizing the closed captions, wherein the closed caption control means requests the transmission of the progress status subtitle information to the progress status subtitle transmitting apparatus according to claim 4, and transmits the progress status transmitted when the program is selected. After the situation subtitle information is multiplexed with the compressed multiplexed data again, the subtitle control unit has a function of displaying the subtitle for the first time for the subtitle indicating the progress status subtitle in the identification information of the identification information obtained from the subtitle analysis unit. A digital broadcast receiving device characterized by the above-mentioned. In a digital broadcast receiving apparatus that receives compressed multiplexed data transmitted from a digital broadcast transmitting apparatus and separates and decodes video and audio of a program, program information, and the like,
6. A progress screen which is transmitted by requesting transmission of progress screen data to the progress screen transmitting apparatus according to claim 5, comprising a synthesizing means for synthesizing a video and a progress screen. A digital broadcast receiving apparatus having a function of performing Computer software used in a digital broadcast transmitting apparatus for transmitting compressed multiplexed data according to the digital broadcast transmitting method according to claim 1,
A progress subtitle generation function that generates subtitle data by generating subtitle data while updating the progress of the program up to the time of broadcasting from time to time using the program material being broadcast, compressed video, audio, program information, etc. Computer software comprising a program for causing a computer to realize a signal multiplexing function for multiplexing the generated subtitle information.

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