JP2004032341A - Plural video selection type terminal equipment and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize the synchronization of display pictures by temporarily storing video contents distributed from a video distributing device in a storage device, and displaying the video contents based on a display request from an operator. <P>SOLUTION: In this video distributing system, a plurality of user terminals are connected through a network to a video distributing device for simultaneously distributing a plurality of videos. Each user terminal displays a plurality of videos received on a screen as small pictures in response to a display request from a user, displays one of those videos as a main picture, and stores a part or whole part of videos by arranging time codes from the leading for synchronization. When the user performs a reproducing operation, the plurality of stored videos are simultaneously displayed and reproduced from the leading of each video. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a video terminal device and a program for efficiently selecting and viewing received content on a user terminal side in a system for simultaneously streaming a plurality of video contents to a plurality of user terminals.
[0002]
[Prior art]
Up to now, systems have been proposed for simultaneously streaming a plurality of video contents to a plurality of user terminals. However, there has been no system that synchronizes each video at the user terminals. In addition, dedicated video editing software, a dedicated device, and time required for editing were required to edit multiple video contents received and stored at the user terminal while maintaining synchronization. Delivery was difficult.
[0003]
[Problems to be solved by the invention]
In a system that has been proposed to stream multiple video contents simultaneously to multiple user terminals, the synchronization between each video is determined by the transmission delay on the network and the processing time between the video content distribution side and the receiving user terminal side. , Causing inconvenience in video viewing on the user terminal. In the multiple video selection type terminal device proposed in the present invention, the video content distributed from the video distribution device is stored and stored in a temporary storage device, and is displayed based on a display request from the operating device, thereby displaying a display screen. To be synchronized.
[0004]
In addition, editing multiple video contents received and stored at the user terminal while synchronizing them required dedicated editing software, dedicated equipment, specialized technology, and time related to editing. Simultaneous distribution of multiple video contents has been difficult. In the multiple video selection type terminal device proposed in the present invention, a plurality of video contents simultaneously received and recorded can be edited while automatically synchronizing with each other, so that individual distribution can be easily performed.
[0005]
[Means for Solving the Problems]
In the multiple video selection type terminal device proposed in the present invention, the video content distributed together with the time code based on the standard time from the video distribution device is stored in the temporary storage device together with the time code, and the video content is transmitted from the operating device. By aligning and displaying the time codes based on the display request, it is possible to synchronize the display screens on the terminal side.
[0006]
Further, in the multiple video selection type terminal device proposed in the present invention, a plurality of video contents simultaneously received and recorded can be edited while automatically synchronizing using the time code. Individual distribution can be easily performed by a transmission request from a user or a transmission process of a user.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a configuration example of a video distribution system of the present invention in which a plurality of video selection type terminal devices and a video distribution device that distributes a plurality of videos simultaneously are connected via a network. In the above system configuration, all devices are unified with Japan Standard Time acquired by a radio clock or the like, and the distribution time of video and audio from the video distribution device, the video display and audio output start time on the receiving terminal side Is determined based on a unified time in this system. The Japan Standard Time may be the World Standard Time. The point is that the devices in the required range only need to set the time, and the Japanese standard time and the world standard time can be easily adopted. Further, the device in the necessary range is a video distribution device, and it is not always necessary that even the terminal sets the time.
[0008]
A plurality of videos distributed from the video distribution device are simultaneously transmitted to a plurality of video selection type terminal devices together with a video display time via a network such as a LAN. In the multiple image selection type terminal device A (hereinafter, referred to as terminal A) in FIG. 1, the received multiple images are temporarily stored in a buffer in the terminal. When the video display time comes, the video data is decoded and displayed on a plurality of small screens, and one of them is displayed on the main screen.
[0009]
When the terminal A stores the plurality of images in a storage device in the terminal, each of the images is stored as a file together with a time code, and a video clip is created by synchronous editing using the time code. At this time, the time code is managed in another file. The video clip is transmitted to the terminal N based on a transmission instruction from the operation device of the terminal A or a transmission request from another multiple video selection type terminal device N (hereinafter, referred to as a terminal N). The terminal N also temporarily stores a plurality of received videos in a buffer in the terminal. In addition, in response to a display request from the user's operation device, the image is displayed on a plurality of small screens based on the transmitted image and time code, and one of the images is displayed on the main screen.
[0010]
FIG. 2 shows an example of the configuration of a multiple video selection type terminal device, in which video from a distribution server is stored in a video clip device for a certain period of time and displayed synchronously. A plurality of videos distributed from the video distribution device in the configuration example of the video distribution system shown in FIG. 1 are simultaneously transmitted via a network such as a LAN together with a video display start time based on a standard time such as the Japan Standard Time. It is transmitted to the multiple video selection type terminal device. The plurality of videos are received by the transmission / reception device in the multiple video selection type terminal shown in FIG. 2, and are temporarily stored in a buffer in the terminal until the video display start time. When the plurality of videos temporarily stored in the buffer arrive at the video display start time, each video is decoded by the decoding processing device in FIG. 2, and after being time-code aligned and synthesized into one screen by the screen synthesis device, It is displayed on the main screen of the display device and a plurality of small screens. During the decoding and display processing, the plurality of videos stored in the buffer are also sent to the video clip device, and are sequentially stored according to the time code. The stored video is managed at a certain time interval Tp, and after a lapse of Tp × 2, the video is deleted from the video clip device by Tp from the beginning. This is performed at Tp intervals. Attribute information such as the video display start time and the time code of the stored video is managed in a separate file. Then, the storage is ended by the distribution stop request from the user or the reception of the transmission stop message from the distribution server. At the end, the video is edited according to the time code of the video that arrives the latest of the plurality of videos.
[0011]
When a user requests a replay display from the operating device while video and audio are stored in the video clip device or the storage device, the reception of the video stored in the video clip device or the storage device until that time is started. Decoding is performed from the beginning, and the time code is displayed on the display device with the same time code. In the case of a video clip device, the displayed time is from the beginning of the stored video data to the time code of the video with the least storage amount among the stored videos. (FIG. 4) The end point is set to the time code of the video that is the latest in the stored video.
[0012]
While the above-described replay display is being processed, decoding and display processing are stopped for the video that has been displayed from the distribution server until then, and the received video is stored in the video clip device sequentially from the buffer. . When the replay display ends, the decoding process and the display process are started again.
[0013]
FIG. 3 shows a flow of recording and storing the received video in the storage device. A plurality of videos received by the transmission / reception device of the multiple video selection terminal are stored in the buffer, and temporarily stored in the video clip device of the multiple video selection terminal. Is stored in the storage device according to a storage request from the user. At this time, each video is stored as a file in the storage device. Attribute data describing a storage location, a storage time, a program name, and the like of each video clip is created, and each video clip is managed by the attribute data. . This attribute data is also listed and saved as a file. If there is no save request from the user, the data is deleted from the video clip device after a lapse of a predetermined time (every Tp). As a result, only necessary images can be stored.
[0014]
In addition, the user of the multiple video selection type terminal registers a plurality of video channels desired to be viewed in advance in the video distribution device, so that the video of the registered multiple channels is always displayed on the display device when the multiple video selection type terminal is activated. When the user selects one of the plurality of channel images from the operating device, the selected image is displayed on the main screen. Further, the user can enlarge and display a desired image by inputting coordinate information of a portion of the image to be enlarged and displayed through the input device from the operation device to the control device. In this case, the target image can be displayed. Are taken out of the branching device for each frame, enlarged by an image enlarging device, and displayed on a display device via an image synthesizing device.
[0015]
The other multiple video selection type terminal (for example, the terminal N in FIG. 1) can receive a plurality of videos from the video distribution device via the network in the same manner as the terminal A. The transmission request from the terminal N while the user of the terminal N refers to the transmission instruction from the user of the terminal A or the video clip list previously transmitted from the terminal A also for the plurality of stored video clips. By doing so, it can be received. The plurality of videos received by the terminal N can be stored, edited, and transferred to another terminal as in the case of the terminal A.
[0016]
[Example 1]
When performing baseball relay using a video distribution system in which a plurality of user terminals and a video distribution device that simultaneously distributes a plurality of videos are connected via a network, a plurality of video selection type terminals on the user side include: For example, (1) the image of the pitcher viewed from behind the backnet, (2) the image viewed from the first base, and (3) the image viewed from the third base, a small screen of the display screen of the terminal is sent. , The images of (1), (2), and (3) are displayed, and the image of (1) is displayed on the main screen. At this time, each video is transmitted together with a time code from the video distribution device, and each screen is displayed in a state where synchronization is maintained, so that the user can view the game scenery at the baseball stadium at a so-called multi-angle. Becomes possible. Also, when the user wants to view the desired angle, for example, the image viewed from the first base of (2) on the main screen, the user inputs an operation signal from an operating device connected to the multiple image selection type terminal. The main screen and the small screen are switched, and the image viewed from the first base in (2) on the small screen is displayed on the main screen.
[0017]
[Example 2]
In the case where all of the received video and audio are directly stored in the storage device without deleting all of the video of the video clip device, the time conditions are aligned with the attribute information file, and the end data is sequentially stored in the storage device sequentially from the head data in the same manner as described above. Stored until
[0018]
When the user requests the replay display from the operating device while the video and the audio are stored in the storage device, the time code of the latest video in the video stored in the storage device up to that point is set to Tr. Is decoded from the time before Tr to Tp, and displayed on the display device with the time code aligned. (FIG. 4)
The video data displayed during Tp can also be copied by the storage device and stored as another file in response to a user's request for storage.
[0019]
As described above, the invention made by the inventor has been specifically described based on the configuration examples and the embodiments. However, the present invention is not limited to the configuration examples and the embodiments, but departs from the gist of the invention. Of course, various changes can be made without departing from the scope.
[0020]
【The invention's effect】
As described above, in a video distribution system in which a plurality of video selection type terminals and a video distribution device that distributes a plurality of videos at the same time are connected via a network, transmission delay on the network, video distribution device side, Even if there is a synchronization shift between the respective videos due to the processing time of the multiple video selection type terminal, the user can save and reproduce the synchronized multiple videos at the receiving terminal.
[0021]
In addition, since the multiple video selection type terminal has a function of storing multiple videos as video clips and collectively managing the video clips, it is easy to edit or transmit the multiple videos to another multiple video selection type terminal. In addition, only a necessary portion can be stored in a storage device having a small storage capacity.
[0022]
Also, in the multiple video selection type terminal, a plurality of video channels desired to be viewed can be registered in advance in the video distribution device, so that the video of the registered multiple channels is always displayed on the display device when the multiple video selection type terminal is activated. Can be displayed.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration example of a video distribution system in which a plurality of video selection terminals and a video distribution device that distributes a plurality of videos simultaneously are connected via a network.
FIG. 2
It is a figure which shows the example of a structure of the multiple video selection type terminal proposed by this invention.
FIG. 3 shows an example of a flow from reception of a plurality of videos to storage in a storage device in the multiple-video selection terminal proposed in the present invention.
FIG. 4 is a diagram showing a replay reproduction section.

Claims (8)

A video distribution system in which a plurality of user terminals and a video distribution device that distributes a plurality of videos at the same time are connected via a network, wherein each of the user terminals is received on a screen by a user's display request. Multiple images are displayed as small screens, one of which is displayed as the main screen, and at the same time, some or all of the multiple images are synchronized in time code from the beginning and stored in a storage device for use. A video terminal device comprising means for simultaneously displaying and reproducing a plurality of video images from the beginning of each video image stored when the user performs a reproduction operation. A plurality of videos transmitted from the video distribution device according to claim 1 are simultaneously stored in the video clip device temporarily for a certain period of time with time codes aligned, and sequentially deleted from information after a certain period of time, When a user performs a reproduction operation, the video terminal device includes means for synchronizing and displaying a plurality of videos by aligning time codes from the beginning of the temporarily stored video and reproducing the plurality of videos. 3. A video clip according to claim 1 or 2, wherein each video is stored as a video clip file, attribute data of each video clip file is created, and these attribute data are managed as a list. A video terminal device comprising means for creating a list file. A plurality of videos transmitted from the video terminal device according to claim 1 are simultaneously stored in the video clip device temporarily for a certain period of time with time codes aligned, and the video information after a certain period of time is sequentially set as one time block. When the user performs a reproducing operation, a clip list of the videos stored up to that point is displayed on the screen, and a plurality of videos from the beginning of the video clip selected by the user are stored. Characterized in that it comprises means for synchronously displaying and playing back. A program for a video terminal device in a video distribution system in which a plurality of video terminal devices and a video distribution device that distributes a plurality of videos at the same time are connected via a network. Display multiple images received on the screen as a small screen, and display one of them as the main screen, and at the same time, synchronize some or all of the multiple images by aligning the time code from the beginning and storing it in the storage device And a program for functioning as a means for simultaneously displaying and reproducing a plurality of videos from the beginning of each video previously stored when the user performs a playback operation. 6. The program according to claim 5, wherein the computer temporarily saves a plurality of videos transmitted from the video distribution device in a video clip device only for a certain period of time with time codes aligned. Deleting sequentially from the elapsed information, and when the user performs a playback operation, it will function as a means to synchronously display and play multiple videos with the time code aligned from the beginning of the temporarily saved video until then A program that includes 7. The program according to claim 5, wherein when the computer stores a plurality of videos, each video is stored as a video clip file, and the attribute data of the video clip file is created. A program including a function of creating a file of a video clip list that manages attribute data as a list. Means for temporarily storing a plurality of videos transmitted from the program according to claim 5 in a video clip device for a certain period of time in a time-aligned manner in a video clip device; A file of each video clip is sequentially stored in the storage device as a time block as a file of each video clip, and the attribute data of the file of each video clip is created. Means of saving to the device, and when the user performs a playback operation, displays the clip list of the video saved so far on the screen, and synchronously displays and plays multiple videos from the beginning of the video clip selected by the user A program to function as a means to do.

Images