JPS6113869A - Facsimile communication system - Google Patents

Abstract

PURPOSE:To attain restart of transmission in a short time after repair of an error even no person attends to a transmission side equipment by commanding wait of transmission request to a transmitter by a command means based on a detection signal by means of a detection means and giving a transmission request to the transmitter with a fixed code stored in a storage means through the release of detection of the detecting means. CONSTITUTION:A main control part 14 has a command means commanding wait of transmission request to the transmitter with a detection signal of a sensor S1 together with a stop signal (f) and function reading a call number of the transmitter from a memory 12 with the detection release of the sensor S1 and an operating signal of a reception button 7b of an operation display part 7 and applying polling. A picture data (e) is transmitted from the transmitter. When a near end of the recording paper is detected by the sensor S1 during the reception of the picture data (e), a detection signal is transmitted to the main control part 14, alarm display is issued to an operation display section 7 and the stop signal (f) is transmitted to the transmitter when the recording of one page during reception is finished. The transmitter interrupts the transmission function by the stop signal (f), sets the transmission control procedure in the polling designation mode and the state is brought into the polling transmission standby state.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a retransmission method based on an abnormality such as out of paper that occurs during reception of a facsimile (hereinafter referred to as FAX) communication device, and in particular, to By polling,
The present invention relates to a FAX communication method that allows retransmission of remaining manuscripts.

2. Description of the Related Art In recent years, FAX communication, which uses communication lines to transmit documents, figures, etc. to remote locations, has become widespread. As shown in Figure 4, in FAX communication, the transmitting and receiving devices between users are connected via a communication line and document communication is carried out between the users. The document is reproduced by recording it on, for example, thermal recording paper (hereinafter referred to as recording paper). There is also a method that uses a subscriber telephone line for the line.

As usage increases, there is a demand for faster transmission, and in response to this demand, high-speed fax communication equipment is being developed and put into practical use. There is a demand for what can be done.

[Conventional technology]

Hereinafter, a FAX communication device will be explained as an example with reference to the block diagram of FIG.

In the figure, the reading section 2 includes a feed roller R1 that transports the fed document 1, a light emitting lamp 21, and a light emitting lamp 21. It consists of a lens system 22 and an image sensor 23, and has a function of reading the original 1. The image sensor 23 is, for example, a charge-coupled device (CO).
A line sensor such as D) performs main scanning and sub-scanning of the projected image and converts it into image data.

The reading control section 3 has a function of activating the reading section 2, converting the read image data into binary values, and sending the converted image data to the main control section 4.

The main control unit 4 controls the sequence of transmission and reception of the device, and also has the function of compressing and sending out the image data sent from the reading control unit 3, and the function of decompressing the received image data and sending it to the recording control unit 5. has. Furthermore, when the sensor S1 detects the near end of the recording paper 1a, the operation display section 7
It has a function of displaying an alarm at the end of the page and sending a stop signal to the transmitting device after the recording of the page being recorded is completed.

The recording control section 5 has a function of sending the received and decompressed image data to the recording section 6, and causing the recording section 6 to record it on the recording paper 1a.

The recording section 6 includes a thermal head 61. Paper feed section 62. Kanta part 63. and a feed roller R2, and has the function of controlling the thermal print head 1 according to the received signal to print on the recording paper 1a fed from the paper feed section 62, and cutting it with the cutter section 63 to create a recorded document. have The paper feed section 62 is provided with a sensor S1 that detects the near end of the recording paper 1a.

The operation display unit 7 includes a keyboard and a display, and the keyboard includes a send button. a. Receive button 7b.

and operation buttons for inputting data such as destination/request destination, etc., and data input from the keyboard, alarms, etc. are displayed on the display.

The transmission control unit 8 controls transmission and reception of image data.

The modem 9 has a function of modulating and demodulating image data and the like.

N CU (Network Control Uni
t: hereinafter referred to as NCU) 10 is the circuit switching network connection;
Has the function of controlling cutting.

The automatic transmission section 11 has a function of automatically dialing at a predetermined time according to a command from the transmission control section 8.

Since it has such a configuration and function, it is possible to send one document to the receiving station.
When transmitting a document, the operator first inputs the code of the receiving station from the operation display section 7, inserts the document I into the device, and then operates the send button 7a. The image data is transferred, read by the image sensor 23, converted into image data, and sent to the main control unit 4.

The main controller 4 instructs the transmission controller 8 to establish a transmission control procedure with the receiving station.

The image data thus compressed by the main control section 4 is modulated by the modem 9 according to a command from the transmission control section 8, and sent out to the line for the receiving station via the NCUIO. In the case of automatic transmission, by marking the document 1 and then marking the transmission time, the automatic transmission section 11 automatically dials the document at a predetermined time, connects the line, and transmits the document.

At the receiving station (here, the operation of the receiving station will be explained using the receiving function shown in FIG. 4), the received image data is sent to the main controller 4.
is elongated and sent to the recording section 6 under the control of the recording control section 5, where a heating resistor (not shown) of the thermal head 61 is selectively heated and recorded on the recording paper 1a. The received document is then cut off.

When the transmission of the image data is completed and a termination signal is sent from the receiving station, the communication is completed.

During such transmission and reception, if an unreceivable state occurs on the receiving device side 5, for example, if the sensor s1 detects the near end of the recording paper 1a, an alarm is displayed on the operation display section 7 of the receiving device, and the transmitting device An abnormal signal is sent to stop transmission, and the line is released. After the receiving device replenishes the recording paper 1a by displaying an alarm, it calls the transmitting device and requests it to resume transmission. In this way, the sending side performs the sending operation again and sends the message.

[Problem that the invention seeks to solve]

According to the conventional method described above, in order to restart transmission, human intervention is required on both the sending side and the receiving side, and especially in the case of time-specific transmission such as at night, the sending side may be unmanned. There is a problem in that it may not be possible to restart communication in a short period of time.

On the other hand, in order to prevent the recording paper 1a from running out during communication, the receiving side prepares a spare recording paper 1a, and when the recording paper 1a reaches the near end, it automatically transfers the backup paper 1a to the spare recording paper 1a. A method of switching is also conceivable, but it requires an automatic replenishment mechanism and control, resulting in high costs and a disadvantage that the device becomes large.

[Means for solving problems]

According to the present invention, the receiving device is provided with a storage means for storing a unique code for calling the transmitting device, a detecting means for detecting a failure occurring during reception, and an instruction means for instructing the transmitting device to wait for a transmission request signal. , a FAX communication method in which the instruction means instructs the transmitter to wait for a transmission request based on a detection signal from the detection means, and when the detection means releases the detection, a transmission request is issued to the transmitter according to a unique code stored in the storage means. In this way, the above problem can be solved.

[Effect]

According to the present invention, instead of the conventional method of disconnecting the line and interrupting communication when an abnormal reception state occurs on the receiving device side, the receiving device is provided with a storage means and an instruction means, and the receiving device is provided with a storage means and an instruction means to transmit data to the storage means. A unique code for calling the device, such as a telephone number, is stored, and when an abnormality occurs, the instruction means instructs the transmitting device to wait for a transmission request, that is, to wait for polling. When the abnormality is corrected and normal operation can be resumed, the telephone number stored in the storage means is automatically dialed to call the transmitting device and perform polling, restarting transmission, and receiving the remaining manuscripts. This makes it possible to resume transmission in a short time even if the transmitting side is unattended, and it is also possible to support time-specified transmission such as at night.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the transmission control procedure of FIG. 1, and FIG. 3 is a flowchart of FIG. 1. The same reference numerals indicate the same objects throughout the figures.

In FIG. 1, memory 12 is a storage means for storing a unique code of the transmitting device, for example a telephone number, or a unique number (ID number), ie a calling number.

The main control unit 14 has the same function as the main control unit 4 described in the conventional example, and includes an instruction unit that instructs the transmitting device to wait for a transmission request along with a stop signal f based on the detection signal of the sensor S1.
It has a function of reading out the calling number of the transmitting device from the memory 12 and performing polling in response to the detection cancellation of the sensor S1 and the operation signal of the receive button 7b of the operation display section 7.

With such a configuration and function, the transmission method will be explained using the transmission control procedure shown in Figure 2 and the flowchart shown in Figure 3. ■First, the transmission device sends the original to be sent, and automatically sends the destination, transmission time, etc. The necessary preparations will be made. After this, it is assumed that there is no operator on the transmitting device side.

(2) In this state, at the designated time, a connection signal a including a dial signal etc. is automatically issued from the transmitting device.

■The receiving device becomes activated and sends a response signal back to the transmitting device.

■Subsequently, the transmitting device outputs a FAX control signal such as a detailed specification including the telephone number of the transmitting device and a training signal for the modem 9, and the receiving device prepares for reception based on this signal. The telephone number of the transmitting device currently being used is stored in the memory 12. Then, a response signal d is sent back.

(2) Subsequently, the transmitting device transmits the image data e.

■When the sensor S1 detects the near end of the recording paper 1a while receiving this image data e, a detection signal is sent to the main control unit 14.
, an alarm is displayed on the operation display section 7, and a stop signal f is sent to the transmitting device when the recording of the one page currently being received is completed.

■This stop signal f causes the transmitting device to interrupt the transmitting function,
The transmission control procedure is set to polling specification mode, and a polling transmission standby state is entered.

■Subsequently, a line release signal g is sent to release the line.

In the above communication, the transmitting device is the calling device and the receiving device is the called party.

- On the receiving device side, an alarm is displayed and the operator replenishes the recording paper 1a, and normal reception becomes possible. When the near-end detection of sensor S1 is canceled and the reception button 7b is pressed, the main control unit 14 The calling number of the transmitting device is read out from 12, automatically dialed in the automatic calling section 11, and a connection signal is sent out to start up the transmitting device.

From this point on, the receiving device is the calling device, and the transmitting device is the called party.

[Phase] Then, the transmitting device sends out a response signal 1, and the receiving device sends out a FAX control signal j as a polling command signal.

The transmitting device that receives the "FAX control signal" sends out a FAX control signal k that includes communication mode settings such as scanning line density and a modem training signal.

@After receiving the response signal 1, the transmitting device sends the remaining original l
When the communication of the FAX message is completed, the end signal n is sent, and the response signal 0. is sent from the receiving device. Communication is then completed based on normal FAX transmission control procedures such as line release signal p and the like.

In this way, when transmission is temporarily interrupted due to a failure such as near-end of the recording paper 1a, the transmitting device makes a reservation for polling, and polling is performed after the failure is repaired.
Since the remaining manuscript can be automatically sent, no human intervention is required on the sending side.

〔Effect of the invention〕

As explained above, according to the present invention, when transmission is temporarily interrupted due to a failure such as near-end recording paper in the receiving device, it is possible to resume transmission in a short time after the failure is repaired even if the transmitting side is unattended. This has the advantage that it can also support time-specified transmission.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment according to the present invention, Fig. 2 is an explanatory diagram showing the transmission control procedure of Fig. 1, Fig. 3 is a flowchart of Fig. 1, and Fig. 4 is an explanatory diagram showing facsimile communication. , FIG. 5 is a block diagram showing a conventional method. In the figure, 1 is the original, la is the recording paper, 2 is the reading section, 3
is a reading control section, 4.14 is a main control section, 5 is a recording control section,
6 is a recording section, 7 is an operation display section, 8 is a transmission control section, 9 is a modem, 10 is an NCU, 11 is an automatic transmission section, 12 is a memory, and Sl is a sensor. 5 to 2nd K half 3 to tea 4 prisoner 5 field

Claims (1)

[Claims] In a communication system comprising a transmitting device that reads images written on a document and transmits image data for each document, and a receiving device that receives and records the image data transmitted from the transmitting device, the receiving device further comprising a storage means for storing a unique code for calling the transmitting device, a detecting means for detecting a failure occurring during reception, and an instruction means for instructing the transmitting device to wait for a transmission request signal, and the detecting means The instruction means instructs the transmitter to wait for a transmission request based on a detection signal obtained by the controller, and when the detection means cancels the detection, a transmission request is issued to the transmitter according to a unique code stored in the storage means. A facsimile communication method characterized by