JP2009105560A - Video data output device and broadcasting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video data output device that can make a lecture material correspond to various languages, and can change and transmit the lecture material as a lecture progresses, and a broadcasting system. <P>SOLUTION: This video data output device 1 can change pages of the lecture material displayed on a screen etc. since a lecturer makes a change indication, and generate video data of an English lecture material corresponding to the page change. Consequently, an attendance can confirm contents even at a distance from the lecturer by displaying the lecture material on a video display device 4 at hand, and can change the lecture material to a lecture material in a language different from that of the lecture material displayed on the screen etc. by operating an operation unit of a radio reception device 3 to confirm it. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for transmitting lecture materials to listeners in a lecture at a wide venue.

In lectures and the like, in general, a lecturer explains the content of a lecture material displayed on a screen by a projector or the like while showing the lecture material to the listener. However, when the venue for the lecture is large, it is difficult for the lecturer and the listener far away from the screen to see the lecture material projected on the screen and to hear the lecture contents. Become. In order to improve such a situation, a technique for transmitting an image obtained by photographing a screen with a video camera and sound collected by a microphone to a monitor and headphones at the listener's hand by infrared communication is disclosed in, for example, Patent Literature 1 is disclosed. Also, in international lectures, the listener may not understand the language of the lecturer, so by sending the speech through simultaneous interpretation, the listener can hear the simultaneous translated speech. You can also select and listen.
JP 2004-312214 A

  On the other hand, the information that the audience can see on the monitor at hand is the content of the screen shot, so depending on the language used for the lecture material used by the lecturer, the audience will hear the simultaneously interpreted speech. Even if I was able to do so, I could not understand the contents of the lecture material.

  The present invention has been made in view of the above circumstances, and a video data output device and a broadcasting system capable of corresponding lecture materials to various languages and switching and transmitting the lecture materials according to the progress of the lecture. The purpose is to provide.

  In order to solve the above-described problem, the present invention provides a first image data group having a plurality of image data, and a second image having image data associated with each image data of the first image data group. Storage means for storing a data group; switching signal acquisition means for acquiring a switching signal; and reading the image data of the first image data group from the storage means, and display contents of the display means based on the image data Display control means for controlling the display, and when the switching signal acquisition means acquires the switching signal, the display control means reads out the image data of the first image data group from the storage means, and is controlled by the display control means. First video data generation means for generating first video data in a streaming format including display content to be displayed, and image data read by the display control means. The second image data group corresponding to the image data is read out from the storage unit, and the second video data in the streaming format is generated based on the image data read out by the reading unit. A video data output device comprising: second video data generation means; and output means for outputting the first video data and the second video data to a transmission means capable of communicating with an external device. I will provide a.

  In another preferable aspect, when there are a plurality of image data of the second image data group corresponding to the read image data, the display control unit acquires the switching signal next. Then, the reading means performs the processing such that the image data to be read becomes the same image data as the image data read immediately before, by the number corresponding to the image data of the second image data group. When the display control means reads the same image data continuously, a plurality of image data corresponding to the same image data may be read in a preset order.

  In another preferred embodiment, the reading means reads the display control means when there are a plurality of image data of the second image data group associated with the image data read by the display control means. Of the plurality of pieces of image data of the second image data group corresponding to the image data to be set, preset image data may be read out.

  In another preferable aspect, the image processing apparatus further includes third video data generation means for generating third video data, and the display control means reads out the image data of the first image data group from the storage means. The display content of the display means is controlled based on the image data, and the third video data is acquired during the period in which the third video data generation means is generating the third video data. The display content of the display unit is controlled based on the third video data or the third video data and the image data, and the second video data generation unit is configured to control the third video data. In a period in which the third video data is generated by the generation unit, the third video data is acquired, and the third video data or the third video data Serial based on the reading means read the image data, may generate a second image data in a streaming format.

  In another preferred embodiment, the first sound collecting means, the second sound collecting means, and the first sound data in the streaming format are generated based on the sound collected by the first sound collecting means. 1 audio data generation means, and second audio data generation means for generating second audio data in a streaming format based on the sound collection of the second sound collection means, and the output means Further, the first audio data and the second audio data may be output.

  In another preferable aspect, the output means outputs the first video data and the first audio data as one channel, and the second video data and the second audio data. May be output as a channel different from the channel.

  In another preferable aspect, the image processing apparatus further includes delay means for delaying the second video data for a predetermined time, and the second video data output from the output means is the second video delayed by the delay means. It may be data.

  In addition, the present invention provides at least one of the video data output apparatus described above, a transmission apparatus having a transmission means for transmitting each data output from the output means, and each data transmitted from the transmission means. A broadcasting system comprising: a receiving unit having a selecting unit that selects either the first video data or the second video data; and a receiving unit that receives the data selected by the selecting unit. I will provide a.

  Moreover, in another preferable aspect, it further comprises a video display device whose display content is controlled by an external device, wherein the receiving device is the external device, and the display content based on the video data received by the receiving means is displayed. You may have a video control means to perform the control displayed on the said video display apparatus.

  According to the present invention, it is possible to provide a video data output device and a broadcasting system that can make a lecture material compatible with various languages and can switch and transmit the lecture material according to the progress of the lecture.

  Hereinafter, an embodiment of the present invention will be described.

<Embodiment>
The video data output device 1 according to the embodiment of the present invention generates video data indicating lecture materials and the like, and wirelessly transmits the generated video data via the wireless transmission device 2 as shown in FIG. The wireless reception device 3 receives the video data transmitted from the wireless transmission device 2 and causes the video display device 4 to display a video related to the video data. Thus, the video data output device 1, the wireless transmission device 2, the wireless reception device 3, and the video display device 4 constitute a broadcasting system. Hereinafter, each configuration of the broadcasting system will be described in order.

  A hardware configuration of the video data output apparatus 1 will be described. FIG. 2 is a block diagram showing a hardware configuration of the video data output apparatus 1.

  A CPU (Central Processing Unit) 11 reads out a program stored in a ROM (Read Only Memory) 12, loads the program into a RAM (Random Access Memory) 13, and executes the program, whereby each unit of the video data output device 1 is read. Control through the bus 10. The RAM 13 functions as a work area when the CPU 11 processes each data stored.

  The storage unit 14 is a large-capacity storage unit such as a hard disk, for example, and stores image data indicating a still image. This image data is data indicating the contents of the lecture material in units of pages. In this embodiment, lecture materials are created in Japanese and English, and for Japanese lecture materials, each page has image data J1, J2,... As for English lecture materials, each page is stored as image data E1, E2,... (Hereinafter referred to as image data E when each page is not distinguished). As shown in FIG. 3, these image data are stored for each language together, image data J which is a Japanese lecture material is Japanese data, and image data E which is an English lecture material is It is memorized together as English data. Here, as an example of the image data, the contents of still images of the image data J1 and the image data E1 are shown in FIG. In this way, Japanese translations of lecture materials in English are stored as foreign language data indicating English lecture materials.

  The storage unit 14 stores a correspondence table. As shown in FIG. 4, the correspondence table defines the display order of lecture materials and shows the correspondence between image data in Japanese data and English data. Therefore, the correspondence table in FIG. 4 shows that the lecture material in Japanese is image data J1 for the first page, image data J2 for the third page, image data J3 for the third page, and image data J4 for the fourth page. The English lecture material has image data E1 for the first page, image data E2 for the second page, image data E4 for the third page, and image data E3 for the fourth page. That is, image data J1 and image data E1, image data J2 and image data E2, image data J3 and image data E4, and image data J4 and image data E3 are associated with each other.

  Returning to the description of FIG. The operation unit 15 is, for example, a keyboard, a mouse, a switching button, or the like. When the user operates the operation unit 15, data representing the operation content is output to the CPU 11. When the speaker presses the switching button, the operation unit 15 outputs a switching signal.

  The audio input unit 16 has a plurality of microphones to which channel numbers are assigned, and outputs the sound collection content from each microphone as audio data for each channel. In this embodiment, the microphone of channel 1 (hereinafter referred to as CH1) picks up the voice of the speaker speaking in Japanese, and the microphone of channel 2 (hereinafter referred to as CH2) speaks the speaker's speech in English. The voice of the interpreter who interprets at the same time is recorded. Hereinafter, the CH1 voice data indicating the Japanese speech generated by the sound collection of the CH1 microphone is referred to as voice data J, and the CH2 voice data indicating the English voice generated by the CH2 microphone sound is voiced. It is called data E.

  The data output unit 17 is an output terminal that outputs output data generated by software processing described later to the wireless transmission device 2 connected to the video data output device 1.

  The display unit 18 is a display device such as a liquid crystal display that displays video on the screen, and performs display based on input video data. Further, by connecting a projector or the like to the outside, an image can be projected and displayed on the screen by the connected projector. Further, various screens such as a menu screen for operating the video data output device 1 are displayed.

  Next, functions realized by the CPU 11 executing programs stored in the ROM 12 will be described. FIG. 5 is a block diagram illustrating a software configuration showing functions realized by the CPU 11.

  The switching signal acquisition unit 101 acquires the switching signal output from the operation unit 15 and outputs an instruction signal indicating an image data reading instruction to the reading unit 102 at the acquired timing. Note that the timing at which the instruction signal is output to the reading unit 102 is not limited to the timing at which the switching signal is acquired, and may be a little later than that timing. The delay time of this timing may be set in advance. Good.

  After the program is executed by the CPU 11, the reading unit 102 acquires the correspondence table from the storage unit 14 and recognizes the image data J and image data E to be read and the reading order. Then, whenever the reading unit 102 recognizes the instruction signal output from the switching signal acquisition unit 101, the reading unit 102 reads the image data J and the image data E in the order specified by the correspondence table, and outputs them to the video data generation unit 103. To do. As described above, the image data J and the image data E are read by the reading unit 102 in conjunction with each other.

  For example, when the reading unit 102 acquires the correspondence table as shown in FIG. 4, when the first instruction signal is recognized, the reading unit 102 reads the image data J1 and the image data E1 and outputs them to the video data generation unit 103. Next, when the instruction signal is recognized, the next image data J2 and image data E2 are read out and output to the video data generator 103. At this time, the reading unit 102 outputs the image data J, which is Japanese data, as CH1, and the image data E, which is English data, as CH2, and outputs it to the video data generation unit 103, and generates Japanese data and English data as video data. To be recognized by the unit 103.

  The video data generation unit 103 generates streaming-format video data J based on the image data J output from the reading unit 102, and the streaming-format video data based on the image data E output from the reading unit 102. E is generated. The generated video data J is output to the display unit 18 and also output to the output data generation unit 104 as video data of CH1. On the other hand, the generated video data E is output to the output data generation unit 104 as CH2 video data.

  Specifically, the video data generated by the video data generation unit 103 is performed as follows. When image data is output from the reading unit 102, video data indicating a video that continues to display a still image indicated by the image data is generated. Then, when the next image data is output from the reading unit 102, video data indicating a video that continues to display the still image indicated by the image data is generated. Such video data is generated in each channel. The display unit 18 displays Japanese lecture materials in units of pages, and displays a page switching every time the speaker presses the switching button. When the video data is generated in this manner, the video data E is obtained by replacing the image data J related to the generation of the video data J output to the display unit 18 with the image data E corresponding to the image data J. It is video data that is generated.

  The output data generation unit 104 receives the video data J and video data E output from the video data generation unit 103 and the audio data J and audio data E output from the audio input unit 16. The output data generation unit 104 outputs the input data to the data output unit 17 as streaming format output data that is synchronized for each channel. That is, the output data is data in which CH1 is collected as video data J and audio data J, and CH2 is collected as video data E and audio data E.

  In this way, the video data output device 1 displays video data indicating the Japanese language lecture material that is the display content displayed on the display unit 18 based on the image data J that is changed according to the switching instruction of the speaker. J is generated, and video data E indicating English lecture material is generated based on the image data E corresponding to the image data J. Then, the video data J and the video data E are output from the data output unit 17 to the wireless transmission device 2. The above is the description of the video data output device 1.

  The wireless transmission device 2 transmits the output data output from the data output unit 17 of the video data output device 1 by wireless communication.

  The wireless reception device 3 receives the output data transmitted from the wireless transmission device 2. Hereinafter, the configuration of the wireless reception device 3 will be described with reference to FIGS. 6 and 7. FIG. 6 is a block diagram illustrating a hardware configuration of the wireless reception device 3. FIG. 7 is an external view showing the external appearance of the wireless reception device 3.

  The CPU 31 reads out a program stored in the ROM 32, loads it into the RAM 33 and executes it, thereby controlling each part of the wireless reception device 3 via the bus 30. The RAM 33 functions as a work area when the CPU 31 processes each data stored.

  The communication unit 34 is a communication unit that receives output data transmitted from the wireless transmission device 2.

  The operation unit 35 is a selection unit having a button for selecting a channel to be used from the output data received by the communication unit 34, and the operation buttons “+” and “−” as shown in FIG. Select a channel. In the present embodiment, CH1 or CH2 can be selected. The selected channel is displayed on the display unit 38 to be described later. Then, the operation unit 35 outputs information indicating the selected channel to the CPU 11. The operation unit 35 may include a switch for setting the wireless reception device 3 to a driving state or a non-driving state.

  The voice input unit 36 has a microphone and generates voice data indicating the collected sound contents. The generated audio data can be wirelessly transmitted together with a terminal ID for identifying the wireless reception device 3 via the communication unit 34. If the audio data to be transmitted is received by the other radio receiving device 3 and transmitted by the radio transmitting device 2, bidirectional audio data communication is possible.

  The audio output unit 37 receives the audio data of the channel selected by the operation of the operation unit 35 among the output data received by the communication unit 34, and is connected to an external terminal as shown in FIG. Supply to headphones.

  The display unit 38 is a display device such as a liquid crystal display, and performs display under the control of the CPU 31. As described above, in addition to the display of the channel selected by the operation of the operation unit 35, the display includes the contents of the channel, the intensity of radio waves for wireless communication, the remaining amount of secondary battery (not shown), and the like. . Here, the contents of the channel indicate Japanese and English (displayed as ENG in FIG. 7) in the present embodiment, and the correspondence between the channel and its contents is the output data generation unit of the video data output device 1 In 104, output data in which a channel and its contents are associated with each other may be generated, or may be set in the wireless reception device 3 in advance.

  The interface 39 is a connection terminal for connecting to an external device and transmitting and receiving various information, and is, for example, a USB (Universal Serial Bus) terminal. In the present embodiment, the video display device 4 is connected as an external device, and the video data of the channel selected by the operation of the operation unit 35 among the output data received by the communication unit 34 is displayed by the control of the CPU 31. Supplied to the device 4. Note that when connected to an external device, the secondary battery may be charged while driving power of each part of the wireless reception device 3 by receiving power supply from the external device. On the other hand, when not connected to an external device, the power supply from the secondary battery may be used as the driving power of each part of the wireless reception device 3, and the wireless reception device 3 is set to a driving state or a non-driving state. This may be determined by operating the operation unit 35.

  The video display device 4 includes a connection terminal such as a USB that can be connected to an external device, and display means such as a liquid crystal display. Then, it is controlled by the wireless reception device 3 that is a connected external device, and a video related to the video data supplied from the wireless reception device 3 is displayed.

  For example, when the video display device 4 is a general personal computer, the CPU 31 of the wireless reception device 3 starts up a browser of the video display device 4 and displays a video related to video data supplied to the video display device 4. Let If the video display device 4 is a simple monitor, the wireless reception device 3 converts the video data into a video signal suitable for the connected video display device 4 instead of supplying the video data. To be displayed on the video display device 4.

  In other words, the video display device 4 may be any device as long as it has a connection terminal and display means. The wireless reception device 3 is connected to the connection terminal of the video display device 4 and the CPU 31 By recognizing the device configuration of the video display device 4 and controlling the video display device 4, the video can be displayed on the display means. The above is the description of each configuration of the broadcasting system.

  Next, the operation of the video data output device 1 will be described.

  First, prior to the lecture, the lecturer creates Japanese and English lecture materials in units of pages, and stores each page as image data in the storage unit 14 of the video data output apparatus 1. In addition, a correspondence table indicating correspondence between image data (page) units of Japanese and English lecture materials and a page order (image data use order) is created and similarly stored in the storage unit 14.

  When the speaker operates the operation unit 15 to cause the CPU 11 to execute the program, the reading unit 102 reads the correspondence table and recognizes the reading order of the image data. Here, it is assumed that the correspondence table is the correspondence table shown in FIG. When the speaker presses the switching button of the operation unit 15, the reading unit 102 reads out the image data J1 and the image data E1 and outputs them to the video data generation unit 103. The video data generation unit 103 generates video data J, which is a video of CH1, and video data E, which is video data of CH2, indicating a video for displaying each still image.

  As a result, the video data J is supplied to the display unit 18 and a still image related to the image data J1 is displayed. When a projector is used, the still image is also displayed on the screen. When the speaker speaks while viewing the still image displayed on the display unit 18, the voice input unit 16 generates the voice data J from the sound collected by the CH1 microphone used by the speaker. Also, voice data E is generated from the sound collected by the CH2 microphone used by the interpreter who interprets the speech of the speaker at the same time.

  The output data generation unit 104 generates output data having CH1 (video data J, audio data J) and CH2 (video data E, audio data E), and outputs the output data to the data output unit 17. At this time, the video indicated by the output data CH1 is a still image of the image data J1, and the video indicated by the output data CH2 is a still image of the image data E1.

  When the speaker presses the switching button of the operation unit 15, the reading unit 102 reads the image data J 2 and the image data E 2 that are image data to be read next recognized from the correspondence table, and outputs them to the video data generation unit 103. To do. As a result, the display content of the display unit 18 is switched to the still image related to the image data J2. The video indicated by the output data CH1 is switched to the still image of the image data J2, and the video indicated by the output data CH2 is switched to the still image of the image data E2.

  The output data generated in this way and output from the data output unit 17 is transmitted by wireless communication via the wireless transmission device 2.

  On the other hand, the wireless reception device 3 receives the output data transmitted from the wireless transmission device 2, and among the output data, the audio data of the channel selected by the operation unit 35 is input to the audio output unit 37 and the video data is input to the interface 39. Output. For example, as shown in FIG. 7, when CH 2 is selected, audio data E is output to the audio output unit 37 and video data E is output to the interface 39.

  As a result, the listener using the wireless reception device 3 can listen to the speech in which the speaker's Japanese speech is simultaneously translated into English using the headphones connected to the speech output unit 37. In addition, it is possible to view a video related to the video data E displayed on the display unit of the video display device 4 to which the wireless reception device 3 is connected. That is, English lecture material corresponding to the Japanese lecture material displayed on the display unit 18 is displayed on the video display device 4 according to the instruction of the lecturer. Specifically, when the video displayed on the display unit 18 is a still image related to the image data J3, a still image related to the image data E4 corresponding to the image data J3 is displayed on the video display device 4. Will be. If the listener operates the operation unit 35 and switches the channel to CH1, the voice of the speaker can be heard and the lecture material in Japanese can be viewed. Further, since the output data is not the image data itself but in the streaming format, the output data received by the wireless reception device 3 cannot be stored, so that the lecture material is not easily duplicated, and the security effect Can be increased.

  As described above, the video data output device 1 can switch the page of the lecture material displayed on the screen or the like in accordance with the switching instruction of the lecturer, and each page for the Japanese lecture material and the English lecture material. Video data corresponding to switching can be generated. As a result, even if the listener is at a position far from the lecturer, he / she can confirm the contents by displaying the lecture material on the video display device 4 at hand, and also by operating the operation unit 35 of the wireless reception device 3. It is also possible to switch to a lecture material in a language different from the one displayed on the screen.

  As mentioned above, although embodiment of this invention was described, this invention can be implemented in various aspects as follows.

<Modification 1>
In the embodiment described above, the correspondence table stored in the storage unit 14 has a one-to-one correspondence between the image data J of Japanese data and the image data E of English data. For example, FIG. In this way, the image data J2, J3 and the image data E2 may be associated in a one-to-many manner. In this case, when the reading unit 102 reads the image data J2 and J3, both read the image data E2. Therefore, the switching button is pressed by the speaker, and the video related to the video data J changes. However, the video related to the video data E is merely a still image related to the image data E2 and does not change.

<Modification 2>
In the embodiment described above, the correspondence table stored in the storage unit 14 has a one-to-one correspondence between the image data J of Japanese data and the image data E of English data. A plurality of one-to-one associations such that the image data E2 and E3 are associated with each other may be used. In this case, the correspondence table can be stored in the storage unit 14 in two modes.

  First, as a first mode, there is a mode as shown in FIG. In this aspect, the image data J associated with a plurality of image data E is read out in a number that is continuously associated (in this case, twice). Reading is performed in the set order. That is, in order 2 and 3, the image data J2 is read from the Japanese data, but the English data is read in the order of the image data E2 and E3. In this case, the reading unit 102 reads the image data E2 and E3 while reading the image data J2 twice. Therefore, the switching button is pressed by the speaker, and the video related to the video data J does not change. Even so, the video related to the video data E changes to still images related to the image data E2 and E3.

  Next, as a second mode, there is a mode as shown in FIG. In this aspect, the image data E2 and E3 corresponding to the image data J2 are separately associated with each other. That is, the association between the image data J2 and the image data E2 is performed as English data 1, the association between the image data J2 and the image data E3 is performed as English data 2, and the other image data is associated with the same. The correspondence table is stored.

  In this case, when reading the image data J2, the reading unit 102 reads both the image data E2 and E3 and outputs them to the video data generation unit 103. In the case of such a correspondence table, the video data generation unit 103 generates video data E1 and E2 instead of the video data E, and based on the image data of the English data 1 in the correspondence table. The video data E1 is generated, and the English data E2 is generated based on the image data of the English data 2 in the correspondence table. That is, the video data E1 is video data indicating a still image that changes as image data E1, E2, E4, E5..., And the video data E2 changes as image data E1, E3, E4, E5. This is video data indicating a still image.

  When the wireless receiver 3 receives the output data and selects CH2, the video data E1 is normally selected as the video data of CH2. On the other hand, when CH2 is selected in the specific wireless receiving device 3, video data E2 is selected as the video data of CH2. Here, the specific wireless receiving device 3 is different from normal (in this case, video data E1) when a plurality of data is included in the same channel by a program stored in the ROM 32. This refers to the wireless receiver 3 in which data (in this case, video data E2) is selected. In this way, only the listener who has the specific wireless reception device 3 can view the video related to the video data E2. As a result, the image data E2 is used as a general still image, the image data E3 is used as a still image for an invitee, and the like. Can also be seen.

  The wireless receiver 3 stores an identification number such as a terminal ID in the ROM 32, the RAM 33, etc., and the output data generator 104 of the video data output device 1 identifies the wireless receiver 3 that selects the video data E2. Information indicating a number may be included in the output data. In this case, when the wireless reception device 3 selects CH2 for the received output data, the CPU 31 determines that the identification number indicated by the output data matches the identification number stored by itself. When the video data E2 is selected and it is determined that they do not match, the video data E1 may be selected. In this way, the program stored in the ROM 32 need not be special.

<Modification 3>
In the above-described embodiment, the correspondence table shows the correspondence between the image data of the Japanese data and the English data, and shows the correspondence between the two types of data, but may be three or more types. For example, the image data is associated with each other as Japanese data, English data, Chinese data, etc., the reading unit 102 reads out the respective image data, and the video data generating unit 103 is based on the respective image data. Video data may be generated. Then, the output data generation unit 104 may generate output data such that CH1 is Japanese, CH2 is English, and CH3 is Chinese.

<Modification 4>
In the above-described embodiment, the correspondence table shows the correspondence between the image data of the Japanese data and the English data. However, this correspondence is not limited to the case where the correspondence is made in different languages. For example, correspondence is made as data for general use and data for invitee, and the data for invitee is made up of image data of still images showing more detailed contents of the data for general use, and the degree of importance is different. It is good also as correspondence. Then, the output data generation unit 104 generates output data in which the general data is CH1 and the inviter data is CH2. Then, the general listener may use the wireless reception device 3 in which CH1 is forcibly selected, and the invitee may use the wireless reception device 3 in which CH1 and CH2 can be selected. As described in the second modification, both the general data and the inviter data may be set to the same channel, and the selected data may be different depending on the wireless reception device 3 to be used. Here, Japanese data and English data may be further used for the general data and the inviter data, respectively, and a correspondence table for associating these may be stored in the storage unit 14.

<Modification 5>
In the above-described embodiment, the audio data is included in the output data. However, the output data may not necessarily be used, and the output data only needs to be composed of a plurality of video data.

<Modification 6>
In the embodiment described above, the video data J and the video data E are data indicating videos in which still images are switched at the same time. However, as shown in FIG. The data E may be delayed for a preset time. In general, simultaneous interpretation by interpreters is often performed slightly later than the speaker's remarks, so the listener feels uncomfortable because he / she hears the explanation before switching after the page changes. In some cases, such a configuration can reduce the sense of discomfort because the page switching is delayed for a predetermined time even if simultaneous interpretation is delayed.

<Modification 7>
In the above-described embodiment, the interface 19 may be provided as shown by a broken line in FIG. The interface 19 has a connection terminal that can be connected to various external devices. For example, a DVD (Digital Versatile Disc) playback device, a video camera, or the like can be connected to the interface 19, and video data output from these devices (hereinafter referred to as an external device). Video data). And it can be set as a structure as shown in FIG. Hereinafter, this configuration will be described.

  A DVD playback device is connected to the interface 19, and a DVD can be played back and stopped by operating the operation unit 15. During playback of the DVD, external video data is input to the interface 19 and output to the video data generation unit 103.

  The video data generation unit 103 generates video data J based on the image data J output from the reading unit 102, and generates video data E based on the image data E output from the reading unit 102. On the other hand, while the external video data is input from the interface 19, each video data is generated so that the video related to the video data J and the video data E becomes the video related to the external video data. In this way, when it is desired to use a video reproduced on the external device as part of the lecture material, this video can be interrupted into the video data J and video data E.

  Note that the video data J and the video data E may not be completely replaced with the video related to the external video data, but may be displayed so as to be superimposed on the video displayed immediately before. May be displayed in such a manner as to be divided into two. In addition, some DVDs are multilingual for each channel. In this case, external video data is channelized and output, and each of video data J and video data E is a different channel. A video related to the external video data may be shown.

<Modification 8>
In the modified example 7, when a video camera is connected to the interface 19, external video data obtained by photographing the lecturer with the video camera can be used. In this case, the video data generation unit 103 may generate a video obtained by combining a video related to the external video data with a still image based on the image data output from the reading unit 102 as video data.

<Modification 9>
In the embodiment described above, the wireless reception device 3 selects the video data and the audio data together for each channel. However, the video reception device 3 can select different channels for the video data and the audio data. Also good.

<Modification 10>
In the embodiment described above, the video data supplied to the display unit 18 is the video data J generated by the video data generation unit 103. However, even if video data H dedicated to supply to the display unit 18 is used. Good. In this case, the video data generation unit 103 may generate the video data H based on the image data J output from the reading unit 102. Alternatively, the image data J may be directly output from the reading unit 102 to the display unit 18 so that the display unit 18 displays a still image related to the image data J. That is, the display on the display unit 18 may be performed in any manner as long as there is a display control means for controlling the display contents based on the image data read by the reading unit 102.

<Modification 11>
In the above-described embodiment, the correspondence table also defines the order in which the reading unit 102 reads image data. However, the order may not be defined as long as image data is associated. . In this case, the lecturer may operate the operation unit 15 and specify the image data to be read next.

<Modification 12>
In the embodiment described above, the communication between the wireless transmission device 2 and the wireless reception device 3 is performed wirelessly, but may be communication performed by wire.

<Modification 13>
In the embodiment described above, the data stored in the storage unit 14 and associated by the correspondence table is image data indicating a still image, but may be video data. In this case, when the data to be read by the reading unit 102 is video data, the video data is read and output to the video data generating unit 103, and the video data generating unit 103 is output from the reading unit 102. The video data to be displayed may be generated based on the video data.

<Modification 14>
In the above-described embodiment, the program executed by the CPU 11 of the video data output device 1 is a program stored in the ROM 12. However, the program is provided with a data input unit that can read data on various recording media. The program may be acquired from various stored recording media, or may be acquired from the outside by providing a communication unit and acquiring the program through communication with an external device such as a server.

It is a block diagram which shows the structure of the broadcast system using the video data output device which concerns on embodiment. It is a block diagram which shows the structure of the hardware of the video data output device which concerns on embodiment. It is explanatory drawing of the image data memorize | stored in the memory | storage part of the video data output device which concerns on embodiment. It is explanatory drawing which shows the corresponding | compatible table which concerns on embodiment. It is a block diagram which shows the software structure of the video data output device which concerns on embodiment. It is a block diagram which shows the structure of the hardware of the radio | wireless receiving apparatus which concerns on embodiment. It is an external view which shows the external appearance of the radio | wireless receiver which concerns on embodiment. It is explanatory drawing which shows the corresponding | compatible table which concerns on the modification 1. FIG. It is explanatory drawing which shows the corresponding | compatible table which concerns on the modification 2. It is explanatory drawing which shows the correspondence table which concerns on the modification 2. It is a block diagram which shows the software structure of the video data output device which concerns on the modification 6. FIG. FIG. 16 is a block diagram showing a software configuration of a video data output device according to Modification 7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Video data output device, 2 ... Wireless transmission device, 3 ... Wireless reception device, 4 ... Video display device, 11, 31 ... CPU, 12, 32 ... ROM, 13, 33 ... RAM, 14 ... Storage part, 15, 35 ... operation unit, 16, 36 ... voice input unit, 17 ... data output unit, 18, 38 ... display unit, 19, 39 ... interface, 34 ... communication unit, 37 ... voice output unit, 101 ... switching signal acquisition unit, 102 ... Reading unit, 103 ... Video data generating unit, 104 ... Output data generating unit, 105 ... Delay unit

Claims (9)

Storage means for storing a first image data group having a plurality of image data and a second image data group having image data associated with each image data of the first image data group;
A switching signal acquisition means for acquiring a switching signal;
Display control means for reading image data of the first image data group from the storage means and controlling display contents of the display means based on the image data, wherein the switching signal acquisition means acquires the switching signal. Display control means for reading out image data of the first image data group from the storage means;
First video data generation means for generating first video data in a streaming format including display content controlled by the display control means;
Read means for reading out image data of the second image data group corresponding to the image data from the storage means in conjunction with the image data read by the display control means;
Second video data generating means for generating second video data in a streaming format based on the image data read by the reading means;
An image data output device comprising: output means for outputting the first image data and the second image data to a transmission means capable of communicating with an external device. When there are a plurality of image data of the second image data group corresponding to the read image data, the display control means reads the image data to be read immediately before the switching signal acquisition means acquires the switching signal. The processing to be the same image data as the read image data is continuously performed by the number corresponding to the image data of the second image data group,
The reading means reads a plurality of image data corresponding to the same image data in a preset order when the display control means reads the same image data continuously. 2. The video data output device according to 1. In the case where there are a plurality of image data of the second image data group associated with the image data read by the display control means, the reading means has the first corresponding to the image data read by the display control means. The video data output device according to claim 1, wherein preset image data is read out from a plurality of image data of the two image data groups. Further comprising third video data generating means for generating third video data,
The display control means reads the image data of the first image data group from the storage means, controls the display content of the display means based on the image data, and performs the third video data generation means by the third video data generation means. In the period in which the video data 3 is generated, the third video data is acquired, and the display means is configured based on the third video data or the third video data and the image data. Control what is displayed,
The second video data generating means acquires the third video data during the period in which the third video data is generated by the third video data generating means, and obtains the third video data. Alternatively, the second video data in a streaming format is generated based on the third video data and the image data read out by the reading unit. The video data output device described. A first sound collecting means;
A second sound collecting means;
First audio data generation means for generating first audio data in a streaming format based on the sound collection of the first sound collection means;
Further comprising: second audio data generation means for generating second audio data in a streaming format based on the sound collection of the second sound collection means;
The video data output device according to any one of claims 1 to 4, wherein the output means further outputs the first audio data and the second audio data. The output means outputs the first video data and the first audio data as one channel, and sets the second video data and the second audio data as channels different from the channel. The video data output device according to claim 5, wherein the video data output device outputs the video data. Delay means for delaying the second video data for a predetermined time;
The video data output device according to claim 5 or 6, wherein the second video data output by the output means is the second video data delayed by the delay means. The video data output device according to any one of claims 1 to 7,
A transmission device having transmission means for transmitting each data output from the output means by communication;
A selection unit that selects at least either the first video data or the second video data among the data transmitted from the transmission unit; and a reception unit that receives the data selected by the selection unit. A broadcasting system comprising: a receiving device. It further comprises a video display device whose display content is controlled from an external device,
The said receiving apparatus is an said external apparatus, Comprising: The video control means which performs the control which displays the display content based on the video data received by the said receiving means on the said video display apparatus is characterized by the above-mentioned. Broadcasting system.

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