JPH0738588A - Data transmitting method - Google Patents

Abstract

PURPOSE:To complete entire processing in the shortest time by recognizing the remaining amount of data transmitted between data transmitters and possessing the excess data of the other device at the device provided with the margin of throughput. CONSTITUTION:A main controller 20 sends data to respective data transmitters 10-12 at respectively designated ratios. At such a time, the respective data transmitters 10-12 possess the data up to the maximum holding amount. When the data are exhausted at the main controller 20 or the possessed data reach the maximum holding amount, the possession of data from the main controller 20 is finished. On the other hand, the secured data are converted and the transmission is started. Since the throughput of the data transmitters 10-12 is hither than the transmission ability of a data line, there is the margin in processing until the data are decreased to the amount designated by a buffer. This margin is allocated to the request processing of a user or the processing of request supervisory from the other station. The data transmitter 10 that transmits all the data requests data to the main controller 20. When there is no data, the data are requested to the other transmitters 11 and 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention basically sends all data to a low speed data line (telephone line, etc.) by a plurality of data sending devices in the shortest time.
The present invention also relates to a data transmission method that enables control of the data transmission state according to the user's request.

[0002]

2. Description of the Related Art Conventionally, even if a plurality of data transmission devices are installed, the control right of data depends on the main control device side, and once the data is sent to the data transmission device of the main control device,
Even if there is a difference between the data transmission devices, there is no way to process the data, or data must be moved through the main control device.

[0003]

According to the above method, even if there is a difference in data between the data transmission devices, another data transmission device can be informed of the flexibility of the data, or the data is processed only through the main control device. However, there is a problem that the accommodation processing cannot be performed after the processing of the main control device is completed.

According to the present invention, data is transferred between each transmission device, and data is exchanged between the data transmission devices and used as long as the network between the data transmission devices is effective without passing through the main control device. It is an object of the present invention to enable the setting of the sending device corresponding to the request under the control of the person.

[0005]

To achieve this object, the present invention provides a local area network capable of transmitting and receiving data between data transmission devices.

It is assumed that the network is not occupied, but data can be transmitted / received to / from the main control unit or can coexist with other systems.

It is assumed that the data transmission capacity of the data transmission apparatus exceeds the transmission capacity of the data line, and the processing capacity of the apparatus is divided into network processing and data management processing by providing a buffer in the transmission section to the data line. It is supposed to be possible.

[0008]

With this configuration, by transmitting and receiving information between the data transmission devices, it is possible to know the difference in the remaining amount of the transmission data between the devices, so that the device having a margin of processing capacity is different from other devices. It becomes possible to acquire excess data and complete the entire process in the shortest time.

Further, according to the user's request, the data processing contents and the sending device can be set.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 10 is a data transmission device, and 1
Reference numeral 1 is a data transmission device, 12 is a data transmission device, 20 is a main control device, and 30 is a network.

Reference numeral 40 in FIG. 2 shows a block diagram of the data transmission device. The data transmission device is roughly divided into three blocks, and 41 is a network control unit for receiving data addressed to the own station from the network and transmitting data to other stations.

Reference numeral 42 analyzes the received data, stores the data, converts the data into a transmission form, then transmits the data to the transmission unit, determines whether or not to transmit the stored data to another station, and uses the data. It is a data management unit for analyzing and executing a request of a person.

Reference numeral 43 has a buffer for performing connection processing and a first-in first-out (FirstIn-FirstOut) buffer, and after fetching data up to the maximum holding amount,
This is a data transmission unit that transmits data from the buffer to the data line, and when the buffer has decreased to a certain amount, requests data to 42 to maintain continuity. The operation of the data transmission device group configured as described above will be described with reference to the flowcharts of FIGS. 3, 4 and 5 to 10.

Reference numeral 44 is a data line (telephone line) whose transmission speed is slower than that of a network for sending out from the data sending device.

First, a data request is issued from each data transmission device in FIG. 3 to S1 of the main control device 20.

Main controller 20 sends data to each data sending device at a specified ratio. Figure 3 at this time
Medium X%, Y% and Z% are distribution rates in the main controller 20.

At this time, each data transmission device acquires data up to the maximum holding amount. When there is no data in the main control device 20 or when the maximum holding amount is reached, the data acquisition from the main control device 20 ends.

On the other hand, the secured data is converted and transmission is started in S2. Since the processing capability of the data transmission device exceeds the transmission capability of the data line, there is room for processing until the buffer is reduced to the designated amount. This margin is allocated to the user's request processing and the processing of request monitoring from other stations.

FIG. 4 shows a state in which there is a data transmitting device which is a transmitting device and a data transmitting device which has lost stored data.

As shown in FIG. 3, the maximum number of items to be held in each data transmission device is designated as A in the data transmission device 10, B in the data transmission device 11, and C in the data transmission device 12. Even if there is a request from other stations for this maximum number of records, if the data is held only within this number,
The number of cases that can be passed to other stations is returned as 0.

Of these, it is assumed that the data transmission device 10 has immediately transmitted all the data, the data transmission device 11 has the number of data items within B remaining, and the data transmission device 12 has the number of data items greater than C. Is assumed to remain.

This difference occurs because the number of retries in data transmission varies depending on the error rate due to the line quality of the data line and the congestion rate of the connection destination line.

Even if it is dispersed by the main control unit, this changes significantly depending on the subsequent state.

The data transmission device 10 that has transmitted all the data first requests the data from the main control device 20 in S3 (a in FIG. 4). If there is no data in the main control device 20 or if the number of data is held, the data request is made to another station in S4.

The control procedure when this request is received is shown in FIG. First, it is assumed that a data request is made to the data transmission device 11 (b in FIG. 4).

Since the data transmission apparatus 11 holds only the number of cases within the maximum number of cases to be held, the data transmission apparatus 11
On the other hand, 0 data is returned in S8 (b 'in FIG. 4).

The data transmission device 10 then makes a data request to the data transmission device 12 (c in FIG. 4).

Since the data sending device 12 holds the data in excess of the maximum number of items to be held, the number of items exceeding the maximum number of items to be held is returned to the data sending device 10 in S9 (c 'in FIG. 4).

The data transmission device 10 calculates the difference between the number of data items currently held and the maximum number of retained data items A, and the estimated transmission time of the first data item out of the number of data items and the data items to be acquired at step S5. It is sent to S10 of 12 (c in FIG. 4).

The data transmission device 12 is the data transmission device 10.
The data to be passed to the data transmission device is calculated based on the information transmitted from S11 in S11.

This calculation is to determine the priority of data and the overall transmission time, and to find the data that can be transmitted in the shortest time when moving.

The data transmission device 12 transmits the data to S6 of the data transmission device 10 in S12 (c 'in FIG. 4).

At this time, the data transmission device 12 prioritizes the data transmission process. After the data movement is completed, the data transmission device 10 rearranges the entire acquired data in order of priority in S13.

When the main control unit 20 has no data and no data can be transmitted / received between the data transmission devices, the transmission device is in the standby state until the next data request for the designated time.

Further, the processing requested by the user is performed by receiving the data from the input device of the data transmission device and interactively via the output device according to the procedure shown in the flow charts of FIGS.

The contents that the user can request include changing the data transmission destination, changing the heading, re-transmitting, changing the order, canceling the transmission, and fixing the data transmission device.

Among these, regarding the past re-sending, only the information is held in the data sending devices 10, 11 and 12 for the past data, and when a request is made, the data is sent to the main control device 20. To request. At this time, if the main controller 20 also has no data, it responds to the request as an error.

[0039]

As described above, according to the present invention, in principle, a plurality of data transmission devices can cooperate to transmit all data in the shortest time, and the transmission data can be transmitted at the request of the user. It is possible to construct an excellent data transmission system that can change the conditions.

[Brief description of drawings]

FIG. 1 is a configuration example diagram of a main control device and a data transmission device using a data transmission method according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram of a data transmission device according to this embodiment.

FIG. 3 is a conceptual diagram of data transfer from the main control device to each data transmission device in this embodiment.

FIG. 4 is a conceptual diagram when the data transmission device in this embodiment issues a request to another device.

FIG. 5 is a flowchart showing a data request / transmission processing procedure according to the present embodiment.

FIG. 6 is a flowchart showing a data request / transmission processing procedure according to the present embodiment.

FIG. 7 is a flowchart showing a data request / transmission processing procedure in the present embodiment.

FIG. 8 is a flowchart showing a data request processing procedure from another station in this embodiment.

FIG. 9 is a flowchart showing a user request processing procedure in this embodiment.

FIG. 10 is a flowchart showing a user request processing procedure in this embodiment.

[Explanation of symbols]

 10 data transmission device 11 data transmission device 12 data transmission device 20 main control device 30 network 40 data transmission device 41 network control unit 42 data management unit 43 data transmission unit 44 low transmission data line

Claims (4)

[Claims] 1. When sending data from a data sending device, when there are a plurality of data sending devices, the main control device having master data disperses the data to some extent and sends the data to the respective data sending devices, Each data sending device sends data, but if there is a gap in the remaining amount of unsent data in each data sending device depending on the sending line and the state of the receiving side of the data, sending is completed or a certain amount of remaining data remains. A data transmission method characterized in that the data transmission device that has reached the amount makes a data request to the main control device and then makes a surplus data request to another data transmission device. 2. When the priority is raised on the data transmission device,
When there is a capture request from another station, the transmission time and status of its own station and the scheduled transmission time and status of the requesting other station are judged, and the data is moved to the one that can be transmitted earlier. The data transmission method according to claim 1. 3. The data sending method according to claim 1, wherein when resending is designated on the data sending device, a screen for changing a telephone number, a caption and a sending time is displayed, and resending conditions are changed. 4. When the data waiting to be sent is designated on the data sending device, a screen for changing a telephone number, a caption and a sending time is displayed to change sending conditions.
Or the data transmission method described in 3.