JP2001077775A - Data broadcasting retransmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a time for collection at a broadcast station without generating line congestion of an up link by return data and to make line connection of a viewer easier. SOLUTION: A CATV main station 3 retransmits received data broadcasting to a viewer 6 through a CATV line 5. In the case of bidirectional program, the viewer transmits return data to the CATV main station 3 through the CATV line 5 and a network filter 4. The network filter 4 accumulates the plural return data from the plural viewers as necessity arises, selects them, collects them, obtains the specific data and transmits them to a data broadcasting station 1 through a public line 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a data broadcast retransmission system, and more particularly to a data broadcast retransmission system suitable for processing reply data from a plurality of viewers.

[0002]

2. Description of the Related Art FIG. 2 is a diagram for explaining a conventional data broadcasting system. In FIG. 2, the data broadcasting station 1
Performs a data broadcast using the satellite 2, and the viewer 6 individually receives this radio wave (downlink). Although FIG. 2 shows a case where a data broadcast using a satellite is received, the same applies to a case of a data broadcast using a terrestrial wave.
Although only one viewer is shown in FIG. 2, a large number of viewers actually exist in parallel.

As is well known in data broadcasting, there are two-way programs. In such a case, it is necessary to return reply data (answers, responses, questionnaire results, etc.) from the viewer to the broadcast contents to the broadcasting station. . The viewer usually sends reply data via a public line (telephone line) (up line). The broadcasting station accumulates and compiles multiple reply data,
Use. An example of an interactive program is an auction. Used cars are displayed on the screen and can be purchased by the viewer with the highest price. All you have to do is send the price and username. In addition, a rock-paper-scissors tournament, a quiz program, and a program that gives seasonal words to make a haiku for a limited time are also conceivable.

[0004]

However, in the conventional data broadcasting system, a sufficient capacity is guaranteed in the downlink, but the reply data from the viewer reaches the data broadcasting station in a time-intensive manner. However, there is a problem that line congestion of a public line (telephone line) (uplink line) occurs, the line is not connected, and the total result of the highest auction price or the like cannot be collected within the broadcasting time.

[0005] Further, since all the reply data are accumulated and counted in the broadcasting station, there is also a problem that the number of data is large and a very long counting time is required. In addition, the viewer needs to separately connect to a satellite cable for receiving a broadcast and a public line, which is inconvenient to handle.
The present invention has been made in order to solve the above-described problems, and does not cause uplink line congestion due to return data,
It is an object of the present invention to provide a data broadcast retransmission system that can reduce the totaling time at a broadcasting station and can easily connect a viewer to a line.

[0006]

To achieve the above object, a data broadcast retransmitting means for receiving a data broadcast and retransmitting the data broadcast to a viewer is provided. A network filter for selecting and summarizing the return data to obtain specific data by summing up the specific data,
And a return means for returning the data broadcast to a broadcasting station.

[0007]

FIG. 1 is a diagram for explaining an embodiment of a data broadcast retransmission system according to the present invention. In FIG. 1, a data broadcasting station 1 performs data broadcasting using a satellite 2, and this radio wave is received by a CATV base station 3. The CATV backbone station 3 retransmits the received data broadcast to the viewer 6 via the CATV line 5 via the network filter 4. Network filter 4 retransmits to viewer 6
In the case of (downlink), nothing passes simply by passing. Although FIG. 1 shows the case where a satellite is used, the same applies to the case of data broadcasting using a terrestrial wave. Although only one viewer 6 is shown in FIG. 1, many viewers 6 actually exist in parallel.

As is well known in the data broadcasting, there are two-way programs. In this case, it is necessary to return reply data (answer, response, questionnaire result, etc.) from the viewer to the broadcast contents to the broadcasting station. . The viewer transmits reply data to the CATV backbone station 3 via the CATV line 5 and the network filter 4 (up line). Network filter 4
Collects a plurality of reply data from a plurality of viewers as needed, and sorts and totals to obtain specific data. Selection and counting (filtering) are performed based on a predetermined rule. The predetermined rule is that, for example, in the case of a used car auction program, reply data with the highest price is extracted. The highest price and the user (viewer) name, which are the extracted specific data, are transmitted to the data broadcasting station 1 via the public line 7 (telephone line).

The data broadcasting station 1 accumulates, aggregates, and uses specific data transmitted from a plurality of CATV backbone stations. For example, in the case of a used car auction program,
The highest priced specific data may be extracted from the specific data from the CATV backbone. Since the viewer does not directly transmit to the data broadcasting station, line congestion on the public line (telephone line) does not occur. Although transmission is performed from a CATV backbone station via a public line, congestion does not occur because the number of CATV backbone stations is very small compared to the number of viewers. In addition, in each CATV backbone station, sorting by a predetermined rule in the network filter 4,
Since the tallying is performed, the number of reply data to the data broadcasting station 1 is very small, and the tallying time at the data broadcasting station 1 is very short.

The predetermined rule in the network filter 4 naturally depends on the content of the interactive program, and it is convenient if the predetermined rule can be changed from the data broadcasting station. In the present invention, the network filter 4 is constituted by a CPU and a program storage means, and this program can easily change a predetermined rule in the network filter 4 by downloading a program transmitted from the data broadcasting station 1 as needed. I have to. In the present embodiment, the network filters 4 are described as being placed one by one in the CATV backbone station. However, if the subscribers are enormous in scale, it is of course possible to arrange them hierarchically.

In this embodiment, the data broadcasting station 1 and the CATV backbone station 3 have been described as being separate from each other. However, it is also possible that the CATV backbone station performs data broadcasting. And the public line 7 becomes unnecessary, and the download of the program of the predetermined rule in the network filter 4 becomes a download from the CATV backbone station, and the CA
It can be processed in the TV network and the structure is simplified. . As described in detail above, the present invention filters a data in advance by distributing a network filter for selecting and outputting specific data by applying a certain rule to a large number of data in a CATV backbone station, thereby filtering information in advance. It has a function to eliminate congestion due to

[0012] Furthermore, compared to a case where a viewer receives data broadcasts individually and each of them connects a down line (return line) to a public line, only one CATV line is required on the viewer side, and the CATV backbone. Captures the number of subscribers, the number of data broadcasting stations including its own station, and the content of data broadcasting, so that a network filter with the optimal input capacity can be constructed based on these data, and unnecessary capital investment can be avoided. The advantage is that the user can always secure a return line.

[0013]

According to the data broadcast retransmission system of the present invention,
There is an extremely excellent effect that the line congestion of the uplink due to the reply data does not occur, the counting time at the broadcasting station can be shortened, and the line connection of the viewer can be simplified.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an embodiment of a data broadcast retransmission system of the present invention.

FIG. 2 is a diagram for explaining a conventional data broadcasting system.

[Explanation of symbols]

 1 data broadcasting station 2 satellite 3 CATV backbone station 4 network filter 5 CATV line 6 viewer 7 public line

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Claims (2)

[Claims] 1. A data broadcast retransmitting means for receiving a data broadcast and retransmitting the data broadcast to a viewer, and a network for selecting and totaling reply data from a plurality of viewers to the retransmitted data broadcast to obtain specific data. A data broadcast retransmission system, comprising: a filter; and return means for returning the specific data to a broadcast station of the data broadcast. 2. The data broadcasting retransmission according to claim 1, wherein said network filter comprises a CPU and a program storage means, and said program downloads a program transmitted from a broadcasting station of said data broadcasting. system.