JPS63116545A - Telephone terminal equipment for tele writing - Google Patents

Abstract

PURPOSE:To confirm the data received at a receiving side with a transmitting side when an automatic receiving is executed with a depicted image communication by being equipped with a means to stored receiving data received automatically and a means to return the stored receiving data to the transmitting side. CONSTITUTION:When an automatic receiving switch in an operating switch 3 is on, a control part 1 supervises an incoming call detecting circuit 6, detects that a calling signal is inputted to the incoming call detecting circuit 6, and then, a main terminal and a telephone line are connected and the off-hooking condition is obtained. Next, a MODEM 5 is supervised, the data are received, and then, the data are stored in the received sequence on a RAM 4 while an address is updated, the data are processed and outputted to a printer 2. When the receiving of the picture drawing data is completed and the input from a trouble sensor 8 is not executed, a signal to show that the transmitting data are obtained is sent and the data stored on the RAM 4 are transmitted in the received sequence.

Description

[Detailed Description of the Invention] [Industrial Field of Application] [Prior Art] A conventional device is described in the Research Report on Telewriting, Research Group on Telewriting, April 17, 1985. In order to detect transmission errors, a parity check method is adopted, but half-duplex communication is used and emphasis is placed on real-time transmission, and the means to notify the sending side of transmission errors and retransmission requests is audio. There is only one.

Therefore, when a transmission error such as a parity error occurs, the receiving side notifies the transmitting side by voice. FIG. 3 shows a configuration diagram of a conventional example when a display is used as an output device.

That is, in the conventional example, on the receiving side, the NCUIO separates audio data and drawing data, and outputs the audio to the telephone and the drawing data to the modem 5.

When the control unit J receives the drawing data through the demo 5, it confirms that there are no errors and displays it on the display 9. The flow of processing when an error occurs is as shown in FIG.

[Problem that the invention seeks to solve]

The above conventional technology does not take automatic reception into consideration.

That is, in the above conventional example, the incoming call detection circuit.

It is possible to have an automatic reception function by adding a timer counter, etc. However, in image communication, communication errors are confirmed by the voice of the receiving side, so if the receiving side is unattended such as automatic reception, it is possible to have an automatic reception function. , the sending side could not confirm whether the data was accurately received.

An object of the present invention is to enable the transmitting side to check the data received by the receiving side when automatically receiving data through graphical image communication.

[Means for solving problems]

The above object is achieved by the telephone terminal device for graphical image communication being provided with a storage means for storing received data and a means for returning the received contents to the transmitting side.

[Effect]

The f'li communication terminal device for graphical image communication stores the sent data in the storage medium when automatic reception is activated.

When the drawing data transmission end signal is received from the sending side, or when no drawing data is received for a certain period of time, the system detects that the drawing data transmission has ended, and then it If there is no input from the rubble sensor, the sent data will be sent from the beginning in the order in which it was sent.
The data is sent back to the data sending side. The data sending side compares the sent data with the data sent back and the data sent back by the data receiving side, and only if the two data do not match and the difference is fatal, The data is retransmitted or only the difference is partially retransmitted, and the procedure is repeated.

Thereby, the data transmitting side can confirm that the intended data has been accurately received.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. This telephone terminal device for image communication includes a control section 1, a printer 2 as an output section, and a printer 2 as an output section. Operation switch 3. Memory (RAM) as a storage medium4. Modem 5° Incoming call detection circuit 6. It is composed of a timer counter 7.

When the automatic reception switch in the operation switch 3 is turned on, automatic reception is controlled according to the procedure shown in the flowchart of FIG. That is, the control unit 1 monitors the incoming call detection circuit 6, and when it detects that a paging signal is input to the incoming call detection circuit 6, it connects the terminal to the telephone line and puts it into an off-hook state. , monitor model lz 5, wait until drawing data is received, and when data is received,
The data is stored in the R, A M 4-1 in the order received while updating the address, processed, and output to the printer 2. This procedure is repeated until the reception of drawing data is completed. The reception of drawing data is completed when a data transmission completion code indicating the end of one page is received.
Also, the timer counter 7 is monitored and a certain period of time (t
l) When drawing data is not received. After receiving the drawing data, if there is no input from the trouble sensor 8, it sends a signal indicating that the data is being sent.
Next, the data stored in RAMJ is transmitted in the order in which it was received. The sender who sent data to this terminal reproduces the data sent back from this terminal, compares the reproduced image with the transmitted drawn image, and if the two images do not match and the difference is fatal. Retransmit drawing data only, partially or completely. When the retransmission is performed, the terminal device repeats the procedure of receiving, storing, and processing data, as shown in the flowchart of FIG. If retransmission is not performed, the telephone line is disconnected and communication is terminated.

The determination that retransmission will not occur is determined when the line is disconnected on the sending side, and a special code called SSO is sent from the sending side, so if this code is received, or after this terminal sends back the data, It is assumed that data is not received within a certain period of time (t2) (SSO is an abbreviation for "Speech Only" and is a code indicating the end of the image communication mode.

).

According to this embodiment, the end of transmission and whether or not to retransmit are determined based on the status and time of the code or line, so it is possible to cope with cases where a code is forgotten or the line is turned off, making it easy to use. It has a good effect.

〔Effect of the invention〕

According to the present invention, since the data automatically received is sent back to the terminal device of the communication partner, it is possible to confirm whether or not the data has been received with certainty.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of a graphic communication terminal with an automatic reception function according to an embodiment of the present invention, FIG. 2 is a control flow diagram of the terminal during automatic reception, and FIG. 3 is the configuration of a conventional example. The block diagram, FIG. 4, is a flow diagram showing processing when an error occurs in a conventional example. 1... Control unit, 2... Printer, 3... Operation switch, 4... Memory (RA, M), 5... Modem, 6... Incoming call detection circuit, 7... Timer Counter, 8...1~Rabble sensor, 9...Display, 10...NCU, 11...Telephone. 1st section 2nd picture start PJ. Goguchi Line≦#Eel 1J Te2Tanno double...Ni1%X
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Claims (1)

[Claims] 1. In a telephone terminal device for graphic communication comprising an output section, a control section, and a communication section, a means for storing automatically received received data, and a means for sending the received data stored in the means back to the transmitting side of the data. What is claimed is: 1. A telephone terminal device for image communication, characterized by comprising: