JPH0831936B2 - Image signal transmission system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile (hereinafter referred to as FAX) communication device, and more particularly to an image signal transmission system capable of increasing a communication speed.

In recent years, fax communication has been put into practical use, which uses a communication line to transmit documents, figures, etc. to a remote location. In FAX communication, a transmission / reception device between users is usually connected through a communication line such as a subscriber telephone line via an exchange to perform document communication with each other. The image data read from the original on the transmitting side is transmitted as an electric signal and received. The document is reproduced by recording on a recording paper on the side.

With the progress of office automation, the use of FAX is rapidly increasing, and along with this, the development of high-speed FAX is also active, and it is desired to further increase the communication speed.

[Conventional technology]

 FIG. 4 shows a block diagram of the FAX communication device.

In the figure, a reading unit 2 has a function of reading the original 1 with an image sensor (not shown) and converting it into image data.

The main control unit 3 also controls transmission / reception sequence,
It has a function of establishing a pre-transmission / reception procedure with the transmission destination based on the transmission destination code input from the operation unit 5. Also, the image data transmitted from the reading unit 2 is binary-converted and compressed, and page by page. Code indicating the end of image data (Return to Control:
It has a function of adding and sending an RTC), a function of decompressing the received image data and sending it to the recording unit 5, a function of detecting the RTC and sending a recording paper cutting command signal to the recording unit 5.

The operation unit 4 includes a keyboard having a transmission button, a reception button, a transmission destination code, an operation button for inputting a transmission time, etc., which are not shown.

The recording unit 5 has a function of printing on a recording sheet in accordance with a received signal to form a recorded document.

The transmission control unit 6 has a function of controlling transmission / reception of image data.

The modem 7 has a function of modulating / demodulating image data and the like.

Network control unit (NCU) 8
Has a function of controlling connection and disconnection of the circuit switching network.

With such a configuration and functions, in the case of transmission, the operator first inputs the code of the transmission destination from the operation unit 5, calls the reception station and operates the transmission button, and is connected to the transmission destination and the original document 1 Is read by an image sensor, converted into image data, sent to the main control unit 4, binary-converted and compressed, and the image data is modulated by the modem 7 page by page under the control of the transmission control unit 6. It is sent to the line for the receiving station via NCU8.

At the receiving station (here, the operation of the receiving station will be described with the receiving function of FIG. 4), the received image data is decompressed by the main control section 3 and sent to the recording section 5 to be recorded on a recording sheet. Thus, when the RTC is detected at the end of the image data of one page, a recording paper cutting command is issued and the recording paper is cut to form a recorded document.

The last page of the original 1 is detected when the next original 1 is no longer present in the setting unit (not shown) where the original 1 was set.

 Transmission and reception can be performed in this way.

Here, when transmitting a plurality of originals 1, the RTC indicating the end of the image data for each page is transmitted, and the transmission of the image data of the next page is started, and then the transmission is continued.

[Problems to be solved by the invention]

As described above, in the conventional method, when transmitting a plurality of originals, the RTC is sent at the end of the image data for each page, and the pre-procedure for transmitting the image data of the next page is performed. There is a problem that it takes extra communication time. Therefore, there is a demand for a method of shortening this.

[Means for solving problems]

According to the present invention, an instruction means for instructing transmission of an original having a plurality of pages as a set, and a code indicating an end at the end of the last page of the original when instructed by the instructing means are added, and the end of pages other than the last page is added. A code giving means for giving a pseudo code, a code detecting means for detecting a code showing a termination and a pseudo code when receiving image data with a code showing a termination and a pseudo code, and a detection output by the code detecting means. In addition, the image signal transmission system is provided with a conversion means for converting the code indicating the end and the pseudo code into the recording medium cutting command signal. By doing so, the above problems can be solved.

[Action]

According to the present invention, all of the image data of a document of multiple pages
Instead of the conventional method of adding and transmitting RTC, when an operation instruction to send a multi-page document is given by the instruction means, the RTC is added to the end of the image data of the last page by the code addition means.
Is added, and the pseudo code is added to the end of the image data of pages other than the final page and transmitted. The recording medium can be cut by converting the RTC and the pseudo code detected by the code detecting means on the receiving side into the recording medium cutting command signal by the converting means. Therefore, it is possible to omit the pre-procedure for sending the RTC at the end of the image data of each page of a multi-page original and for sending the image data of the next page, and continue sending only with pseudo code, thus increasing the sending speed. be able to.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3 (a) and 3 (b). FIG. 1 is a block diagram showing an embodiment according to the present invention, FIG. 2 is a flow chart of FIG. 1, and FIGS. 3 (a) and 3 (b) are explanatory views of FIG. The same reference numerals denote the same objects throughout the drawings.

In FIG. 1, the main control unit 3a moves the function of adding RTC from the function of the main control unit 3 described in the conventional example to the code adding unit 9 and omits it.
When the mode instruction button 4b is operated, the reception side is notified, and when the reception side receives this notification, the mode instruction signal m
Is stored in the mode instruction signal memory 11, and when the pseudo code detector 10 detects the pseudo code d, the mode instruction signal m
A function of sending a recording paper cutting instruction signal to the recording unit 5 is newly added on the condition that the above is stored.

The operation unit 4a further includes a mode instruction button 4b for instructing the transmission of a plurality of pages of originals, that is, a plurality of sheets transmission mode in addition to the function of the operation unit 4 described in the conventional example.

The code assigning unit 9 adds a pseudo code d, for example, “white 0 black 0”, that is, “001101010” to the end of the image data of pages other than the final page.
000110111 "is added and RTC is added to the end of the image data of the last page.
It is a code giving means having a function of giving. The pseudo code d is added to the position where the RTC is conventionally added, and the code that does not affect the data and does not cause an error is set.

The pseudo code detection unit 10 has a function of detecting the pseudo code d of the received image data.

The mode instruction signal memory 11 stores the mode instruction signal m sent from the transmitting side.

With such a configuration and function, the operation when transmitting a plurality of originals 1 as a set will be described with reference to the flowchart of FIG.

First, the operator inputs the code of the transmission destination from the operation unit 5, calls the receiving station and connects, and then the mode instruction button 4
When b and the send button are operated, the mode instruction signal m is stored in the main control section 3a, sent to the destination, and stored in the mode instruction signal memory 11.

Then, the original 1 is read and converted into image data,
Further, the binary code is converted, and the pseudo code adding unit 9 adds the pseudo code d to the end of the image data of each page, compresses it, and sends it to the line for the receiving station. Thus, at the end of the image data of the last page, RTC is added and compressed and sent out.

The image data received at the receiving station (here, the operation of the receiving station will be described with the receiving function of FIG. 1) is the main control unit.
It is decompressed at 3a and sent to the recording unit 5 for recording.

When the pseudo code d at the end of the image data of each page is detected by the pseudo code detection unit 10, the detection signal a is sent to the main control unit 3a.
The main control section 3a outputs a recording sheet cutting command in response to the mode instruction signal m stored in the mode instruction signal memory 11 and the recording section 5 cuts the recording sheet.

Thus, because it is a pseudo code, the RTC transmission at the end of the image data for each page and the pre-procedure for transmitting the image data of the next page are omitted, the image data of the next page is transmitted, and Is recorded.

When the main control unit 3a detects the end of the image data of the final page, a recording paper cutting command is output and the recording paper is cut in the recording unit 5.

That is, as shown in FIG. 3 (a), a pseudo code d is added to the end of the image data of each page of the document 1 to continuously transmit and receive a plurality of pages, and as shown in FIG. 3 (b). , Is cut at the end of the image data of each page.

In this way, the end of each page and the procedure for starting the next page can be omitted in the transmission of the document 1 including a plurality of sheets as one set, so that the communication speed can be increased.

〔The invention's effect〕

As described above, according to the present invention, there is an effect that the communication speed can be increased.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow chart of FIG. 1, FIGS. 3 (a) and 3 (b) are explanatory views of FIG. 1, and FIG. It is a block diagram shown. In the figure, 1 is a document, 2 is a reading unit, 3 and 3a are main control units, 4 and 4a are operation units, 5 is a recording unit, 6 is a transmission control unit, 7 is a modem, and 8 is a network control unit (NCU). , 9 is a code assigning unit, 10 is a pseudo code detecting unit, 11 is a mode instruction signal memory, and d is a pseudo code.

Claims (1)

[Claims] 1. Sending image data read from an original,
In a communication device for recording the received image data on a recording medium and cutting the recording medium for each original, an instruction unit for instructing transmission of an original including a plurality of pages as a set, and an instruction unit for instructing the instruction by the instruction unit. Code giving means for giving a code indicating the end to the end of the last page of the manuscript and giving a pseudo code to the end of the pages other than the last page, and image data to which the code indicating the end and the pseudo code are added Detecting means for detecting the code indicating the end and the pseudo code at the time of reception of, and conversion means for converting the code indicating the end and the pseudo code into a recording medium cutting command signal based on the detection output by the detecting means. An image signal transmission method characterized by being provided.