JPS62166457A - Information transmission system between information processors - Google Patents

Abstract

PURPOSE:To transmit information at a high speed without requiring any expensive modem by connecting plural facsimile equipments and providing a circuit means which enable compressed output data and compressed input data to be transmitted and received to respective input/output terminals. CONSTITUTION:Internal data on the internal data bus 113 of one information processor 111A on a transmission side is supplied to a facsimile equipment 117A through a data transfer means 137A. The data is compressed by a data compressing means 125 and the compressed output data 123 is supplied to the corresponding facsimile equipment 117B of an information processor 111B on a reception side. The received compressed input data 129 is restored by a compressed data restoring means 135 and the restored data 133 is supplied to the bus 113 of the processor 111B by a data transfer means 137B. Then, data processing parts 15A and 15B perform data processing based on the supplied data.

Description

[Detailed Description of the Invention] [Summary] This is an information transmission method between information processing devices, in which facsimile machines corresponding to each of a plurality of information processing devices are connected by a data transmission means, and the internal information within each information processing device is The internally processed data on the data bus is compressed by a facsimile device and sent to the line, and the compressed data on the line is decompressed by the facsimile device and provided to the internal data bus of the information processing device. There is no need to provide separate data conversion devices for each, and data can be transmitted quickly and without errors between information processing devices.

[Industrial application field]

The present invention relates to an information transmission system between information processing apparatuses, and more particularly to an information transmission system between information processing apparatuses in which internally processed data of each information processing apparatus is exchanged.

[Conventional technology]

2. Description of the Related Art In recent years, there has been a strong demand for information processing apparatuses such as office computers and personal computers that have become popular for office or home use to transmit and collect various types of information.

Conventionally, such information processing equipment has been equipped with a special modem to convert data and exchange information from a public perspective.

[Problem that the invention seeks to solve]

However, in this conventional method, the modem that must be specially prepared is extremely expensive.
It was not widely spread.

Furthermore, even if data is converted using a sheet metal modem, the error rate of data transmission over public lines is high, and high-speed, error-free data transmission is impossible. In particular, unlike the case of image data, the transmission of code data in an information processing device must be absolutely error-free.

The present invention was created in view of these points, and provides an information transmission method between information processing devices that does not require an expensive modem and enables high-speed information transmission. The purpose is to

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the present invention.

In the figure, a plurality of information processing devices 111A and 111B are provided so as to exchange information with each other. Each information processing device is capable of processing information independently.

The data processing sections 115A and 115B are connected via an internal data bus 113 so that processing data is transferred internally.

The plurality of facsimile devices 117A and 117B are provided corresponding to the plurality of information processing devices 111A and 111B.

Each facsimile device includes a data compression means 125 that compresses input data 121 from a first input/output terminal 119 to generate compressed output data 123, and outputs the compressed output data 123 to a second input/output terminal 127 and outputs the compressed output data 123 to a second input/output terminal 127. 2 input/output terminals 12
The compressed data input/output means 131 receives compressed input data 129 from 7, and the compressed data restoring means 135 decompresses the compressed input data 129 and outputs the restored data 133 to the first input/output terminal 119. .

The data transfer means 137A and 137B are the information processing device 111A.
, B's internal data bus 113 and facsimile device fi!
Data is transferred between the first input/output terminals 119 of 117A and 117H.

The line means 139 allows compressed output data 123 and compressed input data 129 to be exchanged between the second input/output terminals 127 of each facsimile machine.

Therefore, the overall configuration is such that the internal processing data of each information processing device is compressed and decompressed by the facsimile machine and transmitted by the line means 139.

[Effect]

Internally processed data on the internal data bus 113 in one information processing device 111A on the sending side is transferred to the data transfer means 1.
37A to facsimile machine 117A. Here, the data is compressed by the data compression means 125, and the compressed output data 123 is supplied via the line means 139 to the corresponding facsimile device 117B of the other information processing device 111B on the receiving side.

The received compressed input data 129 is restored by the compressed data restoration means 135, and the restored data 133 is supplied to the internal data bus 113 of the information processing device 111B by the data transfer means 137B. The data processing units 115A and 115B perform data processing based on the supplied data.

Such data transmission and reception is performed by the information processing device 111A,
This can also be done by reversing B.

In the present invention, a commonly used facsimile device 117A
By using data compression and decompression in the information processing devices 111A and 111B, the internally processed data in the information processing devices 111A and 111B is transmitted between each other, thereby eliminating the need for a special modem and eliminating errors at high speed. It becomes possible to transmit information without any information.

〔Example〕

FIG. 2 shows an embodiment of the present invention. Here, although only one set of information processing device 220 and facsimile device 230 are shown connected by public telephone line 210, it is assumed that a plurality of sets are installed.

In the figure, the information processing device 220 is, for example, a general-purpose personal computer, etc., which performs data processing by itself, and has a data processing unit inside it, and internal data containing the processed data. A bus shall be provided. Such an internal data bus (not shown) is connected to the facsimile machine 2 via an external interface 240 such as GPIB, R3232C, etc.
It is connected to 30.

In the facsimile machine 230, the reading section 251
．． Recording section 253. Compression/decompression section 255 and memory section 257
and a modem 259 are connected to the main control section 263 by a data bus 261.

Furthermore, this data bus 261 is connected to the external interface 24.
Connected to 0.

Furthermore, the main control section 263 controls the panel section 265. It is connected to the compression/decompression unit 255 and the line control unit 267 via control lines, respectively, in order to perform necessary control. The facsimile device 230 is coupled to the line 210 by a line control circuit (NCU) 269 .

An external ink face control section 271 is installed in the external interface 240, and the control section 271 is connected to the main control section 263 of the facsimile machine 230 and the external control line 2.
73.

Next, the operation of the embodiment of the present invention having the above-described configuration will be described below.

The facsimile machine 230 connected to the telephone line 210 is already in general use, and its configuration and operation are well known. Here, we will focus on the operation when transmitting internally processed data in the information processing device 220.

First, internally processed data of the information processing device 220 on the sending side is supplied to the data bus 261 of the facsimile device 230 via the external interface 240 connected to its internal data bus. In that case, a control command is given from the main control section 263 to the external interface control section 271 via the control line 273. This command causes the information processing device 2 on the external interface 240 to
The sending operation of data from 20 is controlled.

The data supplied to the data bus 261 is transferred to the compression/decompression unit 25
5, and after being compressed by the data compression operation, the compressed data is given to the memory section 257 and stored therein. Incidentally, the data to be transmitted includes attribute information such as the destination telephone number indicating where to send, the compression method of the data, and the linear density, etc., in the attribute memory section 281 of the memory section 257 as well as storing the compressed data. is memorized.

Here, if the data to be sent from the information processing device 220 is image data, there is no problem even if the reproducibility on the receiving side is somewhat poor. Do this. however,
The code data is stored in the memory section 257 as it is without compression conversion. In this way, all the data to be transmitted is temporarily stored in the memory section 257.

Thereafter, the main control section 263 gives a command to the line control section 267. This line control unit 267 automatically sends a call to the other party's facsimile machine 230 to which data is to be transmitted, and also activates the modem 259 to transfer the stored data in the memory unit 257 to the telephone line 210 via the NCU 269 to transmit the data to the other party's facsimile machine 230. 230 sequentially. The other party's facsimile device 230 sequentially stores the data transmitted via the telephone line 210 in its memory section 257 using the NCU 269 and modem 259 within the other party's device 230 . At this time, attribute information on the transmitting side is also received and stored in the attribute memory section 281.

The line control unit 267 on the receiving side notifies the main control unit 263 of the fact that data has been received, and accordingly gives a command to the external interface control unit 271 to energize the external interface 240. A read request is issued to the information processing device 220 of. Next, when the information processing device 220 enters the reading state, the memory unit 25
A compression/decompression section 255 restores the received data once stored in the data bus 261 by a data decompression operation. This restored data is supplied to the internal data bus of the information processing device 220 via the external interface 240. Here, the data restoration operation is
Since the conversion is performed according to the compression encoding method given as the attribute information, the data sent from the information processing device 220 on the sending side is completely reproduced. However, the data reproducibility is
It is affected to some extent by the compression and decompression methods, and since the image data was compressed using a high-efficiency compression encoding method, the reproducibility is somewhat lowered, but visually there is almost no effect.

Since the code data is not compressed, it does not go through the compression/decompression section 255 and is sent directly to the data bus 255.
61. It is provided to the information processing device 220 via the external interface 240.

In this way, the information processing device 220 that has received the data
performs data processing on the data carried on its internal data bus.

Since the information processing device 220 and the facsimile device 230 are bidirectional, the above-described operation is performed both in sending and receiving data.

Note that when the internal processing data held by the information processing device 220 is image data and the image file is sent or received, the length of the image in the main scanning direction is variable, so the length in the main scanning direction is It is also possible to transfer information (length) sequentially followed as attribute information. This simplifies the data processing of the image file in the information processing device 220 on the receiving side.

Therefore, the general-purpose facsimile device 2 used as a communication medium
30 is inexpensive, and by using its error retransmission function and high-speed transmission function, internal processing data between the information processing words W 220 can be transmitted at high speed and without error.

〔Effect of the invention〕

As described above, according to the present invention, a general-purpose facsimile device is connected to an information processing device through an external interface, and the facsimile device is connected to a public line, thereby allowing information to be transmitted without using a special modem. Information can be exchanged between information processing devices at high speed and without error, and is extremely useful in practice.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the principle of an information transmission system between information processing devices according to the present invention, and FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. In FIG. 1, 111A and B are information processing devices, 113 is an internal data bus, 117A and B are facsimile devices, 125 is a data compression means, 131 is a compressed data input/output means, 135 is a compressed data restoration means, 137A and B is a data transfer means, 13"9 is a line means. In FIG. 2, 210 is a telephone line, 220 is an information processing device, 230 is a facsimile device, 240 is an external interface, 255 is a compression/decompression unit, and 257 is a memory unit. , 271 is an external interface control section.

Claims (1)

[Claims] A plurality of information processing devices (111A, B) provided to exchange information with each other; each of the plurality of information processing devices is capable of processing information independently; A data processing section (115A, B) connected via an internal data bus (113) so that processing data is transferred at Output end (119)
data compression means (125) for compressing input data (121) from the input terminal to generate compressed output data (123); outputting the compressed output data to a second input/output terminal (127); compressed data input/output means (131) for receiving compressed input data (129) from the compressed data input/output means, and decompressing the compressed input data received by the compressed data input/output means and transmitting the decompressed data (133) to the first input/output end; data transfer between a facsimile machine (117A, B) having a compressed data decompression means (135) for outputting compressed data to an internal data bus of each of the information processing apparatuses and a first input/output terminal of each of the facsimile machines; data transfer means (137A, B) for performing the above-mentioned data transfer means (137A, B); 139).