JPH05284162A - Selective multi-address communication system - Google Patents

Abstract

PURPOSE:To ensure the effective use of communication channels and at the same time to perform the selective multi-address communication of the image information, etc., in a short time. CONSTITUTION:The information receivers 4-1-4-n previously transmit and receive the information via a 1:1 communication channel 3 for individual allotment of a key word 10 showing the contents of the desired information to be received. Then, the transmission subject information 20 like the image information corresponding to each key word is collectively transmitted together with an identifier 12 corresponding to each key word via the broadcast type multi-address communication channels 5. Then, each information receiver selectively receives the transmission subject information like the image information including an identifier equal to that received previously via the channel 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selective broadcast communication system, and more particularly to a selective broadcast communication system for selectively transmitting a large amount of information such as still picture information and moving picture information to a large number of communication partners. Regarding

[0002]

2. Description of the Related Art For example, as a conventional selective broadcast communication system for transmitting a large amount of still image information to a large number of destinations at night, and selecting and transmitting different information for each destination, FIG. There is one configured as shown in.

In FIG. 4, reference numeral 1 is a storage device which stores transmission target information 20 such as a large number of still images and moving images, and 2 is a storage device which reads the transmission target information stored in the storage device 1.
A plurality of information receiving devices 4-1 to 4 through the peer-to-peer type communication path 3
It is a center control device which transmits to -n.

In such a configuration, when the users of the information receiving devices 4-1 to 4-n want to receive the broadcast communication service by the center control device 2, the type or identification name of the information desired by the user. Enter a keyword such as. Then, the information receiving device adds the identification number of the device itself to the input keyword and transmits this as request information to the center control device 2 via the communication path 3.

Upon receiving the request information from each of the information receiving devices 4-1 to 4-n via the communication path 3, the center control device 2 temporarily stores the request information in the storage device 1.
Then, when it becomes a time zone such as nighttime when there is a lot of vacancy in the communication path 3, the request information stored in the storage device 1 is sequentially read, for example, in the order of arrival. Then, the transmission target information 20 such as the image information indicated by the keyword in the read request information is read and communicated to the information receiving devices 4-1 to 4-n indicated by the identification numbers in the request information. Transmit individually via path 3.

As a result, each of the information receiving devices 4-1 to 4-1
The user of -n can receive the image information requested by himself.

[0007]

However, in the above-mentioned conventional selective broadcast communication system, for the information receiving devices 4-1 to 4-n indicated by the identification number in the request information, Since the process of individually transmitting image information and the like via the communication path 3 must be repeated, there is no problem if the number of destinations or the amount of each information is small, but when transmitting a large amount of information nationwide As a result, the practical use efficiency of the communication path 3 becomes extremely poor. That is, the communication path 3
There is a problem that the occupation time becomes long and the practical use efficiency is extremely lowered.

Further, there is a problem that it takes a long time to complete the transmission to all the destinations because the transmission is repeated sequentially.

The present invention has been made in view of the above circumstances, and an object of the present invention is to selectively use a communication path and perform selective broadcast communication of image information or the like in a short time. It is to provide a broadcast communication system.

[0010]

In order to achieve the above object, the present invention provides a one-to-one communication channel capable of selectively transmitting and receiving information, a broadcast type broadcast communication channel, and a desired information reception. A plurality of information receiving devices that transmit a keyword indicating the content via a one-to-one communication path and a keyword from each information receiving device via a one-to-one communication path, and an identifier for the keyword is one-to-one After individually replying to each information receiving device via the communication path, the transmission target information such as image information corresponding to each keyword is added to the identifier corresponding to the same keyword via the broadcast type broadcast communication path. The information receiving device is the same as the identifier previously received via the one-to-one communication channel among the information transmitted via the broadcast type communication channel. Such as image information including an identifier And configured to receive and select the signal object information.

[0011]

According to the above means, the information to be individually distributed such as the keyword indicating the content of the information desired to be received by the information receiving device is transmitted and received in advance using the one-to-one communication path, and thereafter, Information to be transmitted such as image information corresponding to each keyword is simultaneously transmitted using a broadcast type broadcast communication channel by adding an identifier corresponding to the keyword, and is received in advance via a one-to-one communication channel. Since information to be transmitted such as image information including the same identifier as the one that has been selected is selected and received by each information receiving device, the occupying time of the one-to-one communication channel and the broadcast type communication channel becomes short. , It is possible to efficiently use these communication paths and deliver necessary information in a short time.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the selective broadcast communication system of the present invention, and FIG. 2 is a block diagram showing an embodiment of the internal construction of the information receiving apparatus.

In FIG. 1, reference numeral 1 is a storage device that stores transmission target information 20 such as a large number of still images and moving images, and 2 is each information receiving device 4-1 to 4 through a one-to-one communication path 3. -N
The keyword 10 and the identification number 11 are received, and the identifier 12 for the keyword 10 is received together with the identification number 13 via the one-to-one communication path 3 to each information receiving device 4-.
After individually replying to 1 to 4-n, the transmission target information 20 such as image information corresponding to each keyword 10 is read from the storage device 1, and the identifier 12 corresponding to the keyword 10 is added to the broadcast type broadcast. The center control device 3 for transmitting all at once via the communication path 5 is a one-to-one type capable of selectively transmitting and receiving information.
Communication channels 4-1 to 4-n are a plurality of information receiving devices that transmit a keyword 10 indicating the content of information desired to be received via the one-to-one communication route 3 by adding the identification number 11 of the device itself. is there.

The information receiving devices 4-1 to 4-n are shown in FIG.
As represented by n, the broadcast communication path control device 4
1. Selection information extracting device 42 for extracting identifier 12 as selection information, comparison device 43, selection information storage device 4
4, a one-to-one communication path control device 45, a switching device 46, and a reception information storage device 47.

In such a configuration, when the users of the information receiving devices 4-1 to 4-n want to receive the broadcast communication service by the center control device 2, the type or identification name of the information desired by the user. Enter the keyword 10 expressed in a word that is easy to understand. Then, the information receiving device adds the identification number 11 of the device itself to the input keyword 10 and transmits this as request information to the center control device 2 via the communication path 3.

When the center control device 2 receives the request information from each of the information receiving devices 4-1 to 4-n via the communication path 3, the target information having the content indicated by the keyword 10 in the request information. A list of 20 identifiers is created for each information receiving device.

That is, when only the information receiving devices 4-1 and 4-2 are shown, as shown in FIG.
Keywords 10-1, 10-2 received from 1, 4-2
Identifier list 12-1 of the target information 20 having the content shown in
Create 12-2.

After that, the created identifier list 12-1 to 12-1
2-n together with the identification numbers 11 of the information receiving devices 4-1 to 4-n that have transmitted the respective keywords 10-1 to 10-n via the one-to-one communication path 3 −
Reply to n individually.

Each information receiving device 4-which selectively receives the list of identifiers 12-1 to 12-n by the identification number 11
The 1 to 4-n one-to-one communication path control device 45 stores the identifier list in the selection information storage device 44 as the selection information 22.

On the other hand, the center control device 2 uses the identifier list 1
In parallel with returning 2-1 to 12-n, the storage device 1
Among the target information 20 stored in the field, the information requested by the information receiving devices 4-1 to 4-n is read by each of the keywords 10-1 to 10-n, and this is read as an identifier corresponding to the keyword. 12 is added and transmitted simultaneously via the broadcast type broadcast communication path 5.

That is, if the identifier list 12-1 for the keyword 10-1 received from the information receiving device 4-1 is as shown in FIG. 3, the keyword 10-
“0”, “1”, and “2” are added to the target information 20 designated by 1 as the identifiers 12 and are transmitted all at once via the broadcast communication path 5.

The broadcast communication control devices 41 of the information receiving devices 4-1 to 4-n receive the target information including the identifier 12 all at once, but the selection information extracting device 42 extracts only the identifier 12 from them. Then, it is input to the comparison device 43.

The comparison device 43 is a selection information extracting device 42.
The currently input identifier 12 is compared with the identifier 12 currently stored in the selection information storage device 44, and the currently input identifier 1 is stored in the stored identifiers 12.
If there is a match with 2, it is determined that the target information 20 currently received is for the own device, and the switching device 4
Target information 2 currently being received after switching 6 to the passing state
0 is stored in the reception information storage device 47.

However, if none of the stored identifiers 12 matches the currently input identifier 12, the target information 20 currently received is for something other than the own device. The determination is made, the switching device 46 is switched to the cutoff state, and the currently received target information 20 is not captured.

As a result, each of the information receiving devices 4-1 to 4-1
-N user is the target information 2 such as image information requested by himself.
Can receive 0.

As described above, in the present embodiment, the individually distributed information such as the keyword 10 indicating the content of the information desired to be received by the information receiving devices 4-1 to 4-n is transmitted through the one-to-one communication path 3. It is used and transmitted and received in advance, and thereafter, transmission target information 20 such as image information corresponding to each keyword 10 and an identifier 12 corresponding to the keyword 10 are added using the broadcast type broadcast communication path 5. Then, the transmission target information 20 such as image information including the same identifier 12 as the identifier 12 previously received via the one-to-one communication path 3 is transmitted to each of the information receiving devices 4-1 to 4-. In order to select and receive with n,
The occupying time of the one-to-one communication path 3 and the broadcast type broadcast communication path 5 becomes short, and these communication paths 3 and 5 are used efficiently,
Moreover, necessary information can be delivered in a short time.

Therefore, an extremely useful effect can be exerted when different information is transmitted to different communication partners.

In the above embodiment, the broadcast communication channel using satellite broadcasting is used as the broadcast communication channel, but an analog communication channel such as a television broadcasting network can be used, and a digital communication channel can be used. It is also possible to use the net. Moreover,
A communication network of a combination thereof can also be used.

Regarding the identifiers, an identifier list consisting of a plurality of identifiers is prepared for each information receiving device, and this is returned to each information receiving device. However, one unique identifier is returned for each information receiving device. It may be configured to.

[0031]

As described above, according to the present invention, information to be individually delivered such as keywords indicating the contents of information desired to be received by a plurality of information receiving devices uses a one-to-one communication path. It is transmitted and received in advance, and thereafter, transmission target information such as image information corresponding to each keyword is simultaneously transmitted by adding an identifier corresponding to the keyword using a broadcast type broadcast communication channel. In order for each information receiving device to select and receive transmission target information such as image information including the same identifier as the identifier previously received via the one-to-one communication path, the one-to-one communication path and the broadcast type same information are selected. The occupation time of the information communication path becomes short, and when transmitting a large amount of information to many transmission destinations, these communication paths can be used efficiently and necessary information can be transmitted in a short time.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a selective broadcast communication system of the present invention.

FIG. 2 is a block diagram illustrating a detailed configuration of an information receiving device according to an embodiment.

FIG. 3 is an explanatory diagram showing an example of an identifier list.

FIG. 4 is a configuration diagram showing an example of a conventional selective broadcast communication system.

[Explanation of symbols]

1 ... Storage device, 2 ... Center control device, 3 ... One-to-one communication path, 4-1 to 4-n ... Information receiving device, 5 ... Broadcast communication path,
10 ... Keyword, 11 ... Identification number, 12 ... Identifier, 4
2 ... Selection information retrieval device, 43 ... Comparison device, 44 ... Selection information storage device, 47 ... Reception information storage device.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical indication location H04N 7/10 8943-5C 7/173 8943-5C (72) Inventor Koji Miyata Toranomon, Minato-ku, Tokyo 1-26-5 NTT DATA Telecommunication Co., Ltd.

Claims (1)

[Claims] 1. A one-to-one communication channel capable of selectively transmitting and receiving information, a broadcast-type broadcast communication channel, and a keyword indicating the content of information desired to be received is transmitted through the one-to-one communication channel. After receiving a keyword from each information receiving device through a plurality of information receiving devices and a one-to-one communication path, and returning an identifier for the keyword individually to each information receiving device through a one-to-one communication path , A center device that simultaneously transmits transmission target information such as image information corresponding to each keyword by adding an identifier corresponding to the keyword, and a center device that simultaneously transmits the information through a broadcast type broadcast communication path. Selects the transmission target information such as image information including the same identifier as the identifier previously received via the one-to-one communication channel among the information transmitted via the broadcast type broadcast communication channel. Selection characterized by receiving Broadcast communication system.