JPH02143645A - Data transmission system - Google Patents

Abstract

PURPOSE:To transmit data with high priority without awaiting the end of the data during processing even when a transmission request of the data with high priority takes place by dividing a long routine data into some data and sending the resulting data. CONSTITUTION:Routine data transmitted from a data transmission equipment 1 to a data sink 2 is sent from a sender side routine data processing section 11 and divided into plural data blocks by a division processing section 13. A header is added to a divided block for identification and the result is sent to a transmission processing section 14, from which the data is sent to the sink 2 via a communication channel. When a data transmission request with high priority takes place, a data with high priority is sent to the processing section 14 from a sender side priority data processing section 12. The processing section 14 interrupts a data with high priority between data blocks of a routine data. A reception processing section 21 separates both the data and the data with high priority is sent to a receive side priority data processing section 24.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a data transmission system, and in particular, when a high priority data transmission request occurs when normal data is being transmitted on a single transmission line. The present invention relates to a data transmission method that interrupts normal data transmission with high-priority data transmission.

[Conventional technology]

Conventionally, when another high-priority data transmission request occurs during data transmission, and there is a conflict in the processing of the data transmission request with the preceding data transmission, the request is processed after the preceding data transmission is completed. In order to handle newly generated data transmission, one separate line was installed to process newly generated data transmission.

[Problem to be solved by the invention]

In the conventional data transmission method described above, if another data transmission request occurs during data transmission, the data transmission is processed in advance, even if the subsequent data transmission request is important data transmission. There is a problem in that it is necessary to wait until the process is completed, and in order to avoid this, it is necessary to provide a separate transmission line.

An object of the present invention is to provide a data transmission method that does not require waiting for the completion of transmission of the data being processed and does not require the provision of a separate transmission path when a request for transmission of other high-priority data occurs. It's about doing.

[Means for Solving the Problems] The data transmission system of the present invention includes: (A) a normal data processing section on the sending side that processes the transmission of normal data that is not a high priority; (B) a normal data processing unit that processes the transmission of data that has a high priority. a sending-side priority data processing unit that processes the data; (C) a division processing unit that divides the normal data into a plurality of data blocks and adds a header for identification to each of the divided data blocks; (D) the header; a transmission processing unit that inserts and transmits the high-priority data between data blocks to which the data is added; (F) a reception processing unit that receives the data block transmitted with high data interrupted and separates the priority data; (F) combines the data blocks of the normal data received from the reception processing unit and restores the original data; (G) a receiving-side normal data processing unit that performs reception processing of the normal data restored by the combination processing unit; (H) receiving and processing the priority data separated by the reception processing unit; and a data receiving device configured with a receiving side priority data processing section.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

The data transmission system shown in FIG. 1 is composed of a data transmitter 1 that transmits data and a data receiver 2 that receives data.

The data transmitting device 1 also includes a transmitting side normal data processing unit 11 that processes the transmission of normal data that does not have a high priority, a sending side priority data processing unit 12 that processes the transmission of high priority data, and a plurality of normal data processing units. The data block is composed of a division processing section 13 that divides the data into blocks and adds a header to each divided block, and a transmission processing section 14 that transmits the data block to which the header has been added.

The data receiving device 2 also includes a receiving processing unit 21 that receives data transmitted from the data transmitting device 1 and separates priority data.
, a combination processing unit 22 that combines the data blocks of the normal data received from the reception processing unit 21 and restores them to the original data, a receiving side normal data processing unit 23 that performs reception processing of the normal data restored by the combination processing unit 22, It is comprised of a receiving-side priority data processing section 24 that receives and processes the priority data separated by the reception processing section 21.

Next, the operation will be explained.

Normal data transmitted from the data transmitting device 1 to the data receiving device 2 is sent out from the sending side normal data processing section 11, and is divided into a plurality of data blocks by the division processing section 13. Then, an identification header is added to each divided block and sent to the transmission processing unit 14. The transmission processing unit 14 transmits the data block from the division processing unit 13 to the data receiving device 2 via the communication line.

The reception processing unit 21 of the data reception device 2 receives the data block transmitted from the data transmission device 1, and the combination processing unit 2 receives the data block transmitted from the data transmission device 1.
Send to 2. The combination processing unit 22 identifies the received data block by the header, combines it with the original data, and restores it. The restored data is sent to the receiving side normal data processing section 23 and processed.

Next, a case will be described in which a high priority data transmission request occurs while the above data transmission is still being performed.

High priority data is sent from the transmission side priority data processing section 12 of the data transmission device 1 to the transmission processing section 14 . The transmission processing unit 14 selects between a data block of normal data being transmitted to the data receiving device 2 and high-priority data between the data blocks. The data is interrupted and transmitted to the data receiving device 2.

The reception processing unit 21 that has received the data composed of normal data and high priority data separates the data blocks of the normal data and the data with high priority between the data blocks, and Send to 24. or,
The data block of normal data is sent to the combination processing section 22 and processed as described above.

〔Effect of the invention〕

As explained above, the present invention divides long normal data into several parts and transmits them, so that when a request to send other high-priority data occurs, the divided data blocks during data transmission can be Since the data is transmitted in between the data blocks, there is no need to wait until the data transmission in progress is completed, and there is no need to provide a separate transmission path.

[Brief explanation of the drawing]

The first panel is a diagram of a practical TJ example of the present invention. 1... Data transmitting device, 2... Data receiving device, 11... Transmitting side normal data processing unit,
12... Sending side priority data processing unit, 13...
...Division processing unit, 14...Transmission processing unit, 21
. . . Reception processing section, 22 . . . Combination processing section, 23 . . . Receiving side normal data processing section, 24.
...Receiving side priority data processing unit. Agent Patent Attorney Shinto Uchihara 7111

Claims (1)

[Scope of Claims] (A) A sending-side normal data processing unit that processes the transmission of normal data that is not a high priority; (B) a sending-side priority data processing unit that processes the transmission of high-priority data; (C ) a division processing unit that divides the normal data into a plurality of data blocks and adds a header for identification to each of the divided data blocks; (E) a data transmission device configured to include a transmission processing unit that interrupts and transmits high-priority data; a reception processing unit that receives data blocks and separates the priority data; (F) a combination processing unit that combines the data blocks of the normal data received from the reception processing unit and restores the original data; (G) the combination processing (H) a receiving side priority data processing unit that receives and processes the priority data separated by the reception processing unit; What is claimed is: 1. A data transmission method comprising: a data receiving device configured as shown in FIG.