JPH11187349A - Receiver, transmitter and video server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply edit a video signal. SOLUTION: A transmitter 1 generates two kinds of video signals of different resolution by a video generation means 1a, adds index information to them and then transmits them. A video server 3 records the video signal of high resolution among the transmitted video signals in a recording means 3c. A portable receiver 2 receives the video signal of low resolution among the transmitted video signals, edits it at need and then, extracts index information on the video signal included in the edited picture to transmit to the server 3 when a required video exists. The server 3 reads the picture of high resolution corresponding to index information transmitted from the receiver 2 and transmits it to a high-resolution receiver 4, which reproduces the transmitted high- resolution video by a reproducing means 4c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving apparatus, a transmitting apparatus, and a video server, and more particularly to a receiving apparatus that transmits a plurality of video signals having different resolutions from a transmitting side and receives the signals at a corresponding receiving apparatus on the receiving side. The present invention relates to an apparatus and a video server.

[0002]

2. Description of the Related Art Conventionally, in television broadcasting, broadcast stations, such as terrestrial broadcasts and satellite broadcasts, provide video signals (moving pictures, audio,
In addition, a method of unilaterally transmitting a signal including character information and the like) is generally used.

As a method of recording the video signal transmitted in this way on the user side, a VTR (Vi
Deo Tape Recorder) is generally used.

[0004]

However, in the conventional broadcasting system, when there are a plurality of programs to be viewed at the same time, it is possible to record the counter-programs by the above-mentioned VTR or the like and watch them at a different time. It was done. By the way, it is difficult for a VTR to record a plurality of programs at a time, so that there is a problem that the number of viewable programs is limited by the number of VTRs owned by the user.

When a program recorded by a VTR is edited (for example, a commercial inserted between programs is deleted, or two programs are combined), at least two VTRs are used to communicate with a master. It was necessary to dub from one tape to the other. Accordingly, the operation becomes very complicated, and there is a problem that deterioration of the video signal at the time of dubbing is inevitable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and enables a plurality of programs to be viewed after the program is broadcast, and allows editing by a simple operation without deteriorating a video signal. It is an object of the present invention to provide a receiving device, a transmitting device, and a video server.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a transmitting apparatus which adds index information for indicating a mutual correspondence to each of a plurality of video signals having different resolutions and transmits the same. In a receiving device that receives a transmitted video signal, a receiving unit that receives a video signal transmitted from the transmitting device, and an extracting unit that extracts a video signal with the lowest resolution from among the received video signals, Recording means for recording the extracted video signal,
Editing means for editing a video signal recorded in the recording means, and an image which extracts index information included in the edited video signal and holds a video signal transmitted in the past by the transmitting device. An output unit that outputs the extracted index information to the server is provided.

[0008] Here, the receiving means receives the video signal transmitted from the transmitting device. The extracting means extracts a video signal having the lowest resolution from the received video signals. The recording means records the extracted video signal. The editing means edits the video signal recorded in the recording means. The output unit extracts the index information included in the edited video signal, and outputs the extracted index information to a video server holding the video signal transmitted in the past by the transmission device.

A receiving apparatus for receiving a video signal transmitted from a transmitting apparatus for transmitting by adding index information for indicating a mutual correspondence to each of a plurality of video signals having different resolutions. Receiving means for receiving a video signal transmitted from the device, extracting means for extracting a video signal having the highest resolution from the received video signals, and reproducing means for reproducing the extracted video signal A receiving device is provided.

[0010] Here, the receiving means receives the video signal transmitted from the transmitting device. The extracting means extracts a video signal having the highest resolution from the received video signals. The reproduction means reproduces the extracted video signal.

Further, in a transmitting apparatus for transmitting a video signal, video signal generating means for generating a plurality of video signals having different resolutions, and index information indicating a mutual correspondence is added to each of the video signals. Index information adding means, transmitting means for transmitting the video signal with the index information added to the receiving device, and output means for outputting the video signal with the index information added to the video server Is provided.

Here, the video signal generating means generates a plurality of video signals having different resolutions. The index information adding means adds index information indicating a mutual correspondence to each of the video signals. The transmitting unit transmits the video signal to which the index information has been added to the receiving device. The output unit outputs the video signal to which the index information has been added to the video server.

Still further, in the video server for recording the video signal transmitted from the transmitting device for transmitting by adding index information for indicating a mutual correspondence to each of the plurality of video signals having different resolutions, Input means for inputting a video signal transmitted from the transmitting device, extraction means for extracting a video signal having the highest resolution from the received video signals, recording means for recording the extracted video signal, When a request to acquire a video signal is issued from the receiving device, a read unit that reads the corresponding video signal by referring to the index information, and reads the read video signal to the receiving device that has made the request. And an output unit for outputting to a receiving device capable of receiving a high-resolution video signal.

Here, the input means inputs the video signal transmitted from the transmitting device. The extracting means extracts a video signal having the highest resolution from the received video signals. The recording means records the extracted video signal. When a request to acquire a video signal is issued from a predetermined receiving device, the reading unit refers to the index information and reads a corresponding video signal. The output unit outputs the read video signal to another receiving device corresponding to the receiving device that has made the request and capable of receiving a high-resolution video signal.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating the principle of the present invention.
In this figure, the transmitting device 1 has a high resolution (for example, 6
40 × 400 pixels) and low resolution (for example, 320 × 2)
After adding index information to be described later to the two types of video signals (00 pixels), the video signals are transmitted to the portable receiving apparatus 2, the video server 3, and the high-resolution receiving apparatus 4.

The portable receiving device 2 is carried by a user, and receives and records a low-resolution video signal among the video signals transmitted from the transmitting device 1.
When the user desires to view from among the recorded video signals, a process of acquiring the corresponding program from the video server is performed by referring to the index information added to the video signal.

The video server 3 extracts and records a high-resolution video signal from the video signals transmitted from the transmission device 1 and, when the portable reception device 2 requests acquisition of a predetermined program. Reads the corresponding video signal with reference to the index information and
Output to

The high-resolution receiving device 4 reproduces a high-resolution video signal among the video signals transmitted from the transmitting device 1.
In addition to recording, the video server 3
If a high-resolution video signal is transmitted from
The signal is reproduced and recorded.

Next, details of each device will be described. The transmitting device 1 includes a video generation unit 1a that generates two types of video signals of high resolution and low resolution, index information (channel ID (Identification), program ID, program start time, program end time, current time, and the like). ), Transmitting means 1c for transmitting a video signal to the portable receiving apparatus 2 and the high-resolution receiving apparatus 4 by broadcast radio waves or the like, and transmitting the video signal via a network or the like. It comprises an output means 1d for outputting to the server 3.

The portable receiver 2 includes a receiving unit 2a for receiving a video signal, an extracting unit 2b for extracting a low-resolution video signal, a recording unit 2c for recording a video signal, and a recording unit 2c.
And an output unit 2e for outputting a request to acquire a predetermined program from the video server 3.

The video server 3 has input means 3a for inputting a video signal transmitted from the transmission device 1, and extraction means 3 for extracting a high-resolution video signal from the input video signals.
b, recording means 3c for recording the extracted high-resolution video signal, reading means 3d for reading the video signal in response to a request from the portable receiving device 2, and high-resolution receiving device 4 for reading the read video signal. Output means 3 for outputting to
e.

The high-resolution receiving device 4 includes a receiving means 4a for receiving a video signal transmitted from the transmitting device 1 and the video server 3, an extracting means 4b for extracting a high-resolution video signal from the received video signal, and It comprises a reproducing means 4c for reproducing a video signal.

In such a system, the user views the low-resolution video signal transmitted from the transmitting device 1 by the portable receiving device 2 and records the necessary program in the recording means 2c if necessary. If any of the recorded programs is desired to be viewed at a high resolution, the editing means 2d selects a corresponding program, extracts index information included in the program, and outputs the index information.
To the video server 3 via the.

The video server 3 records a video signal (a high-resolution video signal to which index information is added) output from the transmitting device 1 in the recording means 3 c, and outputs the index information from the portable receiving device 2. Then, the video signal (high-resolution video signal) to which the corresponding index information is added is extracted from the recording unit 3c,
Output via e.

The high-resolution receiving device 4 receives the high-resolution video signal output from the video server 3 by the receiving means 4a and reproduces it by the reproducing means 4c. Note that the extracting unit 4b extracts a high-resolution video signal from the video signal transmitted from the transmission device 1.

FIG. 2 is a block diagram showing a configuration example of the transmitting device 1 shown in FIG. The principle diagram shown in FIG. 1 and FIG.
The corresponding relationship with the configuration example shown in FIG.

That is, the function of the image generation means 1a is provided in the image generation unit 11. Index information adding means 1b
Is provided in the index information generation unit 12 and the index information index information addition unit 13. Also,
The function of the transmission unit 1c is included in the transmission unit 14. Further, the function of the output unit 1 d is provided in the interface unit 15.

In the above-described embodiment, the video generation unit 11 generates a low-resolution video signal from a video signal (high-resolution signal) output from, for example, a television camera or a VTR by performing processing such as thinning-out. Then, the obtained two kinds of video signals are output to the index information adding unit 13. The index information generator 12 generates and outputs index information (details will be described later) corresponding to the video signal output from the video generator 11. The index information adding unit 13 adds the index information generated by the index information generating unit 12 to the video signal. The transmitting unit 14 superimposes the video signal to which the index information has been added on the carrier wave,
Via the portable receiving device 2 and the high-resolution receiving device 4
Send to The interface unit 15 outputs the video signal to which the index information has been added to the video server 3 via a network (for example, the Internet).

Next, an example of the configuration of the portable receiver 2 shown in FIG. 1 will be described with reference to FIG. The correspondence between the principle diagram shown in FIG. 1 and the configuration example shown in FIG. 3 is as follows.

That is, the function of the receiving means 2a is provided in the tuner section 21. The function of the extracting means 2b is included in the low-resolution video signal extracting unit 22. The recording unit 24 has the function of the recording unit 2c. The function of the editing means 2d is
Editing unit 25, video signal reproducing unit 23, speaker (SP) 2
7 and the display unit 28. The interface unit 26 has the function of the output unit 2e.

In the embodiment described above, the tuner section 21 receives the broadcast radio wave transmitted from the transmitting device 1 via the satellite 18 and then performs a demodulation process to obtain a video signal. Low resolution video signal extraction unit 22
Extracts only a low-resolution video signal from the received video signal and supplies it to the video signal reproducing unit 23. The video signal reproducing unit 23 separates and extracts the audio signal and the image signal from the video signal, and supplies them to the SP 27 and the display device 28, respectively.
The SP 27 converts the audio signal output from the video signal reproducing unit 23 into audio and outputs it. In addition, the display unit 28
It is configured by a CD (liquid crystal display) or the like, and displays and outputs an image signal output from the video signal reproducing unit 23. The recording unit 24 includes, for example, a hard disk, and records the video signal reproduced by the video signal reproducing unit 23. The editing unit 25 includes a CPU (Ce
ntral Processing Unit), ROM (Read Only Memor)
y), a RAM (Random Access Memory), and the like. The video signal recorded in the recording unit 24 is read and edited, and when a user desires to view a high-resolution video, The index information included in the video signal (low-resolution video signal) to be read is read from the recording unit 24 and output to the video server 3 via the interface unit 26 and the network 17. The interface unit 26 modulates a video signal acquisition request command according to a predetermined communication protocol, and outputs the command to the video server 3 via the network 17.

Next, a configuration example of the video server 3 shown in FIG. 1 will be described with reference to FIG. The correspondence between the principle diagram shown in FIG. 1 and the configuration example shown in FIG. 4 is as follows.

The function of the input means 3a is provided in the interface unit 31. The function of the extracting means 3b is included in the high-resolution video signal extracting unit 32. The function of the recording unit 3c is included in the recording unit 34. The function of the reading means 3d is as follows: the reading unit 35 and the index information extracting unit 36
Has. Further, the function of the output unit 3 e is provided in the interface unit 31.

In the embodiment described above, the interface unit 31 receives and demodulates the video signal transmitted from the transmitting device 1. High resolution video signal extraction unit 3
2 extracts a high-resolution video signal from the video signal. The writing unit 33 records the extracted high-resolution video signal in the recording unit 34. When a request to acquire a video is made from the portable receiving device 2, the reading unit 35 outputs the video signal corresponding to the index information (index information corresponding to the requested video signal) supplied from the index information extracting unit 36. And outputs it to the interface unit 31. When a request for transmitting a video signal is made from the portable receiving device 2, the index information extracting unit 36 extracts index information from the received acquisition request command.

Next, an example of the configuration of the high resolution receiver 4 shown in FIG. 1 will be described with reference to FIG. The correspondence between the principle diagram shown in FIG. 1 and the configuration example shown in FIG. 5 is as follows.

That is, the function of the receiving means 4a is provided by the tuner section 41 and the interface section 47. The function of the extraction means 4b is included in the high-resolution video signal extraction unit 42. The function of the reproducing means 4c is as follows.
The VTR 44, the speaker 45, and the monitor 46 have.

In the embodiment described above, the tuner section 41 receives the broadcast radio wave transmitted from the transmitting device 1 via the satellite 18 and then performs a demodulation process to obtain a video signal. High resolution video signal extraction unit 42
Extracts only a high-resolution video signal from the received video signal and supplies it to the video signal reproducing unit 43. The video signal reproducing unit 43 separates and extracts an audio signal and an image signal from the video signal, and supplies them to the speaker 45 and the monitor 46, respectively. The speaker 45 converts the audio signal output from the video signal reproducing unit 43 into audio and outputs the audio. Also, monitor 4
Reference numeral 6 denotes a CRT (Cathode Ray Tube) monitor or the like, which displays and outputs an image signal output from the video signal reproducing unit 43. The VTR 44 includes a video signal reproducing unit 4
3 to record and reproduce the video signal reproduced. The interface unit 47 receives and demodulates the video signal transmitted from the video server 3 via the network 17, and outputs the demodulated video signal to the video signal reproducing unit 43.

Next, the operation of the above embodiment will be described with reference to FIGS. Now, assuming that a video signal captured by a television camera (not shown) is input to the transmission device 1 shown in FIG.
For example, a low-resolution video signal is generated by thinning out pixels of the original video signal (high-resolution video signal) at a predetermined rate, for example. At this time, the audio signal included in the video signal may be subjected to compression processing by a predetermined method.

The two types of video signals, high resolution and low resolution, output from the video generation unit 11 are input to an index information addition unit 13 where index information is added.

FIG. 6 shows an example of the index information. The index information includes a channel ID 51 for specifying the number of channels of the broadcast station, a program ID 52 for specifying a program name, a start time 53 indicating a start time of the program, an end time 54 indicating an end time, and , And the current time 55 indicating the time.
Therefore, by referring to the index information, it is possible to know the mutual correspondence between the high-resolution image and the low-resolution image.

Such index information is generated by the index information generating section 12, and is added to the high resolution and low resolution video signals in the index information adding section 13, respectively.

The two types of video signals to which the index information has been added are supplied to the transmission unit 14 and the interface unit 15. The transmitting unit 14 superimposes two types of video signals to which index information has been added, for example, on a carrier in a satellite broadcast band, and transmits the signals via the antenna 16. as a result,
The transmitted radio wave is relayed by the satellite 18 and then transmitted to the portable receiver 2 or the high-resolution receiver 4. The interface unit 15 modulates two types of video signals according to a predetermined transmission protocol, and
To the video server 3 via the.

In this example, two types of video signals are output to the video server 3 via the network 17, but only high-resolution video signals are transmitted via the network 17. It may be.

The two types of video signals output via the network 17 are transmitted to the interface unit 31 of the video server 3.
Input from After demodulating the signal, the interface unit 31 outputs the signal to the high-resolution video signal extraction unit 32. The high-resolution video signal extraction unit 32 extracts a high-resolution video signal from the two types of video signals output from the interface unit 31 and supplies the high-resolution video signal to the writing unit 33. Writing unit 33
Writes information in a predetermined area of the recording unit 34 after compressing information of a high-resolution video signal according to a predetermined method, for example.

As described above, the high-resolution video signal transmitted from the transmission device 1 is recorded in the recording unit 34 of the video server 3. When there are a plurality of transmission devices 1, a plurality of high-resolution video signal extraction units 32 and a plurality of writing units 33 may be prepared according to the number.
Alternatively, as many video servers 3 as the number of transmission devices 1 may be arranged on the network 17.

On the other hand, the radio wave transmitted from the transmitting section 14 of the transmitting apparatus 1 is also received by the portable receiving apparatus 2 shown in FIG. The tuner unit 21 of the portable receiving device 2 receives and demodulates a radio wave relayed by the satellite 18. From the demodulated video signal, only the low-resolution video signal is extracted by the low-resolution video signal extraction unit 22 and supplied to the video signal reproduction unit 23. The video signal reproducing unit 23 extracts an audio signal and an image signal from the video signal and supplies them to the SP 27 and the display unit 28, respectively. As a result, the user can view the program currently being transmitted (broadcast) by the transmission device 1 using a low-resolution video signal. It should be noted that the video signal viewed by the user is stored in the recording unit 24 sequentially after a predetermined compression process is performed. At this time, the index information (see FIG. 6) included in the video signal is also recorded in the recording unit 24.

Note that the viewed program may not be automatically recorded, but may be recorded in the recording unit 24 only when specified, for example. The video signal recorded in the recording unit 24 of the portable receiver 2 can be edited by performing a predetermined operation from the editing unit 25.

FIG. 7 shows an example of an interface screen displayed when an editing process is performed. This display screen is displayed when the user performs a predetermined input from an operation unit (for example, a touch panel) connected to the editing unit 25.

In this display example, the channel to be edited (in this example, "182c
h "), the program name ("Today's Asia "in this example), the start time of the program (" 16:00:00 "in this example), and the end time of the program (" 17: 00: 0 "in this example) , And the time corresponding to the currently displayed image (hereinafter,
(Referred to as the current time) (in this example, "16:32:01")
Is displayed.

In the window 100 at the center of the screen, the image currently being edited is displayed. A dial 101 is displayed in the upper right part of the screen, and is operated when moving the part to be reproduced forward or backward. The “start transmission” button 102 is operated when acquiring a high-resolution video corresponding to the edited video from the video server 3. The “stop” button 103 is operated when transmission of a high-resolution video signal is started from the transmission device 1 and then stopped.

The "edit" button 104 is a button operated when an edit menu (not shown) is displayed. By selecting a predetermined command from the menu displayed as a result of operating this button, an image is displayed. It is possible to delete a predetermined portion of the signal or to join a plurality of different video signals. It should be noted that various kinds of video editing processes have been conventionally known, and a description thereof will be omitted. The pointer 105 indicates a currently displayed portion of the video signal.

In such a display screen, the recording unit 24
When the “transmission start” button 102 is pressed after the video signal recorded in the recording section 24 is edited, the editing section 25 reads the corresponding index information from the recording section 24 and adds predetermined information. The data is transmitted to the video server 3 via the interface unit 26 and the network 17.

FIG. 8 shows an example of information transmitted to the video server 3 at this time. In this example, a user address 61 indicating a user address on the network 17, a user ID 62 for specifying the user,
A channel ID 63 for specifying a channel desired to be transmitted, a program ID 64 for specifying a program name, a start time 65 for specifying a first time of a portion of the program desired to be obtained, and a last time At the end time 66.

For example, if all of the program “Today's Asia” currently displayed in FIG. 7 is to be acquired from the video server 3, the user address 61 and the user ID 62 are used as the high-resolution receiving device 4 (high-resolution video). Destination)
The user address and user ID of the user are selected,
"182" is selected as the channel ID 63, and "Today's Asia", "16:00:00", "1" as the program ID 64, the start time 65, and the end time 66.
7: 00: 00: 00 "will be selected.

When transmitting a plurality of programs continuously or when trying to delete a commercial or the like, the data shown in FIG. 8 must be transmitted by the number corresponding to the continuous video signal. become. Further, even when the user can view only a part of the program, all video signals of the program can be obtained by appropriately setting the start time and the end time.

The data transmitted from the portable receiving apparatus 2 as described above is received by the video server 3 shown in FIG. Video server 3
The interface unit 31 receives the data transmitted from the portable receiving device 2, demodulates the data, and supplies the demodulated data to the index information extracting unit 36.

The index information extracting unit 36 extracts index information from the data supplied from the interface unit 31 and supplies the index information to the reading unit 35. As a result, the reading unit 35 reads the high-resolution video signal corresponding to the index information from the recording unit 34, adds predetermined header information thereto, and then outputs the high-resolution video signal via the interface unit 31 and the network 17 to the high-resolution receiving device. Send to 4.

FIG. 9 shows an example of header information added to the video signal at this time. In this example, a user address 71 (= user address 61) indicating the address of the user of the transmission destination (high-resolution receiving device 4), a user ID 72 (= user ID 62) for specifying the user, and a channel to be transmitted are specified. Channel ID 73 for
A program ID 74 for specifying the program, a start time 75, an end time 76, and a current time 77 indicating the start time, end time, and current time of the transmitted program are included.

For example, in the above example, "Today's Asia" is used as the program ID 64, and "16: 00: 0" and "17: 00: 0" are used as the start time and the end time.
“0” is extracted, and the corresponding video signal is read from the recording unit 34. As the header information, the address of the user of the high-resolution receiving device 4 on the network and the ID of the user are selected as the user address 71 and the user ID, respectively.
3. Program ID 74, start time 75, and end time 7
6, “182ch”, “Today's Asia”, “1
6: 00: 00: 00 "and" 17:00:00 "are respectively selected, and the current time 55 included in the index of the read video signal is selected as the current time 77, and the generated header is The added video signal is output to the high-resolution receiving device 4 via the network 17.

As a result, the high-resolution receiver 4 shown in FIG.
Then, after the transmitted video signal is received and demodulated by the interface unit 47, the video signal is reproduced by the video signal reproducing unit 43, so that the video edited by the portable receiving apparatus 2 is recorded on the VTR 44. Or
The speaker 45 and the monitor 46 allow the user to directly view.

According to the above embodiment, the information recorded in the recording section 24 (hard disk) of the portable receiving apparatus 2 can be randomly accessed, so that the video editing work can be performed quickly. Becomes possible.

Further, even when the user is out of the office, the portable receiver 2 can save or edit the image while referring to the actual image. Even when the broadcast time of a program is changed due to, for example, the desired program can be reliably recorded.

Further, since the portable receiving device 2 performs the editing operation using the low resolution video signal, the size of the device can be reduced, and the editing operation can be performed quickly. Becomes

Further, after the editing is completed, the high-resolution image corresponding to the low-resolution video can be viewed and recorded by the high-resolution receiving device 4. In the above embodiment, the transmitting device 1 is connected to the video server 3, the portable receiving device 2 is connected to the video server 3, and the video server 3 is connected to the high-resolution receiving device 4 via the network 17.
The transmitting device 1 and the portable receiving device 2 and the transmitting device 1 and the high-resolution receiving device 4 are transmitted by radio waves via a satellite or the like, but the present invention is limited to only such a case. It goes without saying that, for example, an optical cable or a digital line can be used.

[0065]

As described above, according to the present invention, a transmitting apparatus transmits video signals of a plurality of resolutions to which index information has been added, a video server records a high-resolution video signal, and a portable receiving apparatus. After receiving and editing the low-resolution video signal, the device transmits the index information to the video server when there is a required video, and as a result, the desired video edited by the high-resolution receiving device is transmitted. Since the image can be viewed, the video can be edited with respect to a low-resolution video signal having a small amount of information. As a result, the editing operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a block diagram illustrating a configuration example of a transmission device illustrated in FIG. 1;

FIG. 3 is a block diagram illustrating a configuration example of the portable receiving device illustrated in FIG. 1;

FIG. 4 is a block diagram illustrating a configuration example of a video server illustrated in FIG. 1;

FIG. 5 is a block diagram illustrating a configuration example of a high-resolution receiver illustrated in FIG. 1;

FIG. 6 is an example of index information added to a video signal transmitted from a transmission device.

FIG. 7 is a display example of a screen displayed when editing work is performed in the portable receiving device shown in FIG. 3;

8 is an example of an acquisition request command transmitted to a video server when acquiring a video signal from the portable receiving device shown in FIG.

9 is an example of header information added to a video signal transmitted by a video server as a result of receiving the data shown in FIG. 8;

[Explanation of symbols]

1a ... video generating means, 1b ... index information adding means, 1c ... transmitting means, 1d ... output means,
2a ... receiving means, 2b ... extracting means, 2c ... recording means, 2d ... editing means, 2e ... output means,
3a ... input means, 3b ... extraction means, 3c ... recording means, 3d ... readout means, 3e ... output means, 4a ... reception means, 4b ... extraction means, 4c
...... Reproduction means

Claims (4)

[Claims] 1. A receiving apparatus for receiving a video signal transmitted from a transmitting apparatus for transmitting by adding index information for indicating a mutual correspondence to each of a plurality of video signals having different resolutions, wherein the transmitting apparatus Receiving means for receiving a video signal transmitted from a video signal, extracting means for extracting a video signal having the lowest resolution from the received video signals, recording means for recording the extracted video signal, and recording means Editing means for editing the video signal recorded in the, the index information included in the edited video signal is extracted, and the video server holding the video signal previously transmitted by the transmitting device And output means for outputting the extracted index information. 2. A receiving apparatus for receiving a video signal transmitted from a transmitting apparatus for transmitting by adding index information for indicating a mutual correspondence to each of a plurality of video signals having different resolutions, Receiving means for receiving a video signal transmitted from the device, extracting means for extracting a video signal having the highest resolution from the received video signals, and reproducing means for reproducing the extracted video signal. A receiving device, characterized in that: 3. A transmitting apparatus for transmitting a video signal, wherein: a video signal generating means for generating a plurality of video signals having different resolutions; and index information indicating a mutual correspondence is added to each of the video signals. Index information adding means, transmitting means for transmitting the video signal to which the index information is added to the receiving device, and output means for outputting the video signal to which the index information is added to the video server A transmission device characterized by the above-mentioned. 4. A video server that records a video signal transmitted from a transmitting device that transmits index information for indicating a mutual correspondence to each of a plurality of video signals having different resolutions and transmits the video signal. Input means for inputting a video signal transmitted from the apparatus; extracting means for extracting a video signal having the highest resolution from the received video signals; recording means for recording the extracted video signal; When a request to acquire a video signal is issued from the device, a read unit that reads the corresponding video signal by referring to the index information, and the read video signal corresponds to the receiving device that made the request, And an output unit for outputting to a receiving device capable of receiving a high-resolution video signal.