JPH0362767A - Communication method utilizing plural lines - Google Patents

Abstract

PURPOSE:To reduce the data transmission time inversely proportional to number of communication lines by dividing a sent data in response to the communication speed of plural communication lines in use and sending the split data through separate communication lines nearly simultaneously so as to send the data to be sent in parallel. CONSTITUTION:Selected communication lines 6a-6c are opened, a communication data being D1 data is sent through the communication line 6a, a communication data being D2 data is sent through the communication line 6b, and a communication data being D3 data is sent through the communication line 6c to a receiver side communication equipment 1b nearly simultaneously. Upon the receipt of the transmission data through the communication lines 6a-6c, the receiver side communication equipment 1b stores each transmission data to a memory 3 at first. Then an arithmetic processing unit 2 of the communication equipment 16 discriminate the configuration order of the communication data from the head information of each communication data. Each information is recognized from the sent data 11a, 11b, 11c to recognize the configuration order of the data D1, D2, D3, then the original compressed data is decoded by connecting the data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a communication method using multiple lines, and sometimes to a reduction in data transmission time.

[Conventional technology] Conventionally, when transmitting data between communication devices such as facsimiles, only one communication line such as a telephone line can be used at the same time, so one type of data was serially sent over one line. .

[Problem to be solved by the invention] As mentioned above, when transmitting data over a communication line, 1.
If different types of data are sent serially over a single line, the transmission time is extremely long when the amount of data is large, such as image data, and the transmission time becomes even longer especially when the image is in color. was there.

However, in recent years, ISDN networks, which have been built on the basis of digital integration of telecommunications networks, use versatile interfaces to comprehensively support communication services such as voice, character, and image. telecommunications network service was launched, and it became possible to use multiple communication lines at the same time.

Therefore, an object of the present invention is to propose a communication method that can reduce data transmission time by using multiple communication lines almost simultaneously and sending data in parallel over multiple lines. be.

[Means for Solving the Problems] A data communication method according to the present invention is such that each communication device is equipped with a plurality of modems for transmitting and receiving data over a plurality of communication lines. They open simultaneously, and the transmitting side divides and transmits the data according to the communication speed of multiple communication lines, and the receiving side restores the data sent from the multiple communication lines to the original data. .

[Operation] In this invention, the data to be transmitted is divided by keeping in mind the communication speed boundaries of the plurality of four communication lines that use the data (7. The divided data is transmitted almost simultaneously on each separate communication line. Transmit.

[Embodiment] FIG. 1 is a configuration diagram showing a communication device according to an embodiment of the present invention. In the figure, 1 is a communication device such as a facsimile, 2 is an arithmetic processing unit that decodes commands from the communication device 1, processes data, and performs communication processing, and 3
4a to 4c are modems that modulate and demodulate signals to be transmitted and received; 5a to 5e are connectors that connect the ItJ lines 6a to 6e and modems 4a to 4e; 7 is a data bus , 8 is an interface connected to an external device via a bus cable 9.

When transmitting and receiving data using this communication device I, the communication lines and identifiers that can be used on the receiving side and the transmitting line on the sending side are registered in advance, and the identifier on the receiving side can be opened manually. Determine the order of communication lines.

The operation of transmitting data from the transmitting side communication device 1a to the receiving side communication device 1b in this state as shown in FIG. 2 will be explained with reference to flowchart 1 shown in FIG.

First, for example, a TV camera,
Image data to be transmitted by a scanner camera, video camera, etc. is read into the transmitting side communication device 1a (step S
1. ). Communication lines used at the same time, for example 3 lines 6a
~6c is selected (Step S2), each communication line 6a~6
Check the communication speed of c (step S3). On the other hand, if the read image data, that is, the communication data has directionality, the number of dots in the horizontal direction is also stored in the memory 3 (step S4). Then, the read and created communication data is compressed by the arithmetic processing unit 2 and stored in the memory 3 as compressed data (step S5). After that, the selected communication line 6a
Divide the compressed data according to the communication speed ratio of ~6c (
Step S6). For example i! ! Translated communication speed of communication line 6a is 96 [10bps, communication speed of communication line 6b is 4800bps, communication speed of communication line 6c is 2.
400 bps, and if the compressed data is 1000 bits, the compressed data 10
is divided into 527-bit data, 286-bit D2 data, and 142-bit D3 data.

Next, each divided data is formed into transmission data bit information for each communication port line 6a to 6c by the arithmetic processing unit 2 (step S7). Transmission data of this communication line charge] Ia, 1
As shown in FIG.
IIIJ, r02+1Jr 03 ]-1J as in 8
The number of divisions of the single set data 10 is expressed as r
It is indicated by 8 bits such as O:3 II J. In addition,"
II" indicates a hexadecimal number.

I)1 data, D2 data I)3 divided into subsequent stages
Number of each bit of data r572 J, r286 J
r 142J are each represented by 7 bytes, and the number of dots in the horizontal direction is represented by 5 bytes in transmission data i whose configuration order is number 1 j. Then, the divided compressed data, D data, D2 data, and 1)2 data are respectively displayed at the last stage of each transmission data and stored in the memory 3.

In this state, the selected communication lines 6a to 6C are opened, and the communication data is transferred from the communication line 6a to the communication line 6b.
From 1), the communication data of the two data are transmitted from the communication line 6C to the communication device 11) on the receiving side almost simultaneously (step S8). Upon receiving the transmission data from each of the communication lines 68 to 6c, the receiving side communication device 1)) first stores each transmission data in the memory 3 (
Step S9). Next, the arithmetic processing unit 2 of the communication device 11) determines the composition order of the communication data from the beginning of each communication data, and in the next stage, 3 stages 1], the arithmetic processing unit 2 of the communication device 11) judges the composition order of the communication data from the beginning of each communication data, and in the next stage, 3 stages 1]
The number of bits of the divided T)1 data, D2 data, D, and data are recognized, and furthermore, the number of traverses 1 to 1 in the horizontal direction is confirmed from the transmission data lla having the first configuration order. Each of these pieces of information is transmitted as data 1. I allb, IIc
D1 data divided by recognition from 1) 2
Data, I),] Since the composition of the emperor is known, the original compressed data 10 is restored by concatenating this data (step 5tO). Thereafter, the restored compressed data is subjected to the inverse process of compression to create the same data as the original image data, taking into account the number of dots in the horizontal direction, and stores it in the memory 3. Step Sli'), the stored image Print out and record the data.

Thereafter, the transmitting side communication device 1a determines whether there is any more data that should not be sent.2) If there is data to be sent and the communication data has not been read yet, it is re-read. The communication data is read and the above process is repeated (step S l
3. l4). Then, when all communication data has been transmitted, the process ends.

[Effects of the Invention] As explained below, this invention divides data to be transmitted according to the communication speed of a plurality of communication lines used, and transmits the divided data almost simultaneously through separate communication lines. As a result, the data to be transmitted can be sent in parallel, and the data transmission time can be shortened in inverse proportion to the number of communication lines.

Furthermore, since the transmission time can be shortened, data communication involving a large amount of data, such as data such as moving images and color images, can be transmitted in a short time, and waiting for communication time can be eliminated.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a communication device according to an embodiment of the present invention, FIG. 2 is a block diagram showing data transmission according to the second embodiment, and FIG. 3 is a flowchart showing the operation of the second embodiment.
FIG. 4 is a block diagram showing the compressed data of the above embodiment, and FIG. 5 is a block diagram showing the retired data of the actual example. 1,], a, Ib...communication equipment, 2...arithmetic processing unit, 3...memory, 48-40...modem, 5a-5 b...connector, 6a ~6e...
Communication line, ]0... Compressed data, lla, 1.1.
bllc...Transmission data.

Claims (1)

[Claims] Each communication device is equipped with multiple modems to send and receive data over multiple communication lines, and when communicating, multiple communication lines are opened almost simultaneously, and the sending side transmits data according to the communication speed of the multiple communication lines. A communication method that uses multiple lines, in which the data is divided and transmitted, and the receiving side restores the data sent from multiple communication lines to the original data.