JPH04167856A - Facsimile transmitter-receiver - Google Patents

Abstract

PURPOSE:To prevent useless consumption of recording paper due to paper jam at a sender side by outputting a coincidence discrimination signal when a same picture signal is sent repetitively and stopping the print-out when the count exceeds a prescribed value. CONSTITUTION:When a call signal arrives, a line is connected to the facsimile equipment and a data is sent / received. A picture signal comparison section 11 compares a received picture signal with a picture signal of one preceding line for each line and when a picture signal of a current line is identical to that of the preceding line, a coincidence discrimination signal is outputted. Upon the receipt of the coincidence discrimination signal from the comparison section 11, a signal processing section 10 increments a line counter 12 and when the count does not reach a prescribed value L, the received picture signal is sent to a printing output section 18, in which the signal is printed out on recording paper. When the content of the counter 12 reaches the prescribed value L on the way of print-out, an alarm means 15 outputs an alarm signal, the line is interrupted and the mode restores the standby state and useless consumption of the recording paper is avoided.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a facsimile transmitting/receiving device, and more specifically, the present invention relates to a facsimile transmitting/receiving device, and more specifically, a method for automatically stopping print output when image signals of the same pattern are continuously transmitted. This is a feature that is characterized by the fact that the notification is made by

[Prior Art] Recently, facsimile transmitting/receiving devices (hereinafter referred to as facsimiles) that transmit and receive image information via telephone lines have been developed and used.

In this type of facsimile, the calling party reads the original to be sent, converts it into an image signal, and transmits this image signal to the called party via a telephone line to receive a copy. When multiple sent documents stick together due to static electricity and get jammed in the image reading section, or if the sent documents get caught in the image reading section, scanning in the sub-scanning direction (the suction direction of the sent documents) will not be performed. Since image signals of the same line are continuously transmitted to the called party, recording paper is wasted on the called party.

[Problems to be Solved by the Invention] The present invention, proposed in view of the above circumstances, automatically stops printing when the same pattern of image signals is continuously transmitted for a predetermined number of times, and thereby An object of the present invention is to provide a facsimile transmitting/receiving device that prevents wasteful consumption of facsimile data.

[Means for Solving the Problems] The present invention proposed to achieve the above object receives an image signal transmitted via a telephone line line by line and compares it with the image signal of the previous line. An image signal comparison section, a line counter that counts each time an image signal identical to the previous line is received, and resets when an image signal different from the previous line is received, and prints the received image signals sequentially on recording paper. On the other hand, when the count value of the line counter exceeds a predetermined value, the signal processing section is configured to stop the print output and issue a necessary notification.

[Function] In the facsimile transmitting/receiving apparatus of the present invention, the image signal comparison section receives the image signals transmitted through the telephone line line by line, and compares and discriminates the image signals of the current line and the previous line. In the signal processing section, when a mismatch determination signal is transmitted from the image signal comparison section, the line counter is reset and the image signal is printed out, while when a coincidence determination signal is transmitted, the line counter performs counting. The operation of printing out the image signal is repeated, and when the count value of the line counter exceeds a predetermined value, the printing output is stopped and necessary notification is performed.

[Example code] The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a facsimile machine 1 according to the present invention. In the figure, 11 is an image signal comparison section, 12 is a line counter, and 13 is a line control section for switching and connecting telephone lines. , 14 is a modem that transmits and receives image signals etc. via the telephone line l; 15 is an alarm means that outputs an alarm sound; 16 is a key operation section having various operation keys; 17 is a ROM 17a and a RAM.
17b, a memory section 18, a print output section that prints out the image signal received by the modem 14 on recording paper; 19;
Reference numeral 1 denotes an image reading section that reads a transmission document and converts it into an image signal, and the processing of each of these sections is centrally performed by the signal processing section 10.

The image signal comparison unit 11 receives the image signals transmitted through the telephone line l line by line and compares them with the image signals of the previous line, thereby determining whether the image signals of the current line and the previous line match. Determine discrepancies.

The line counter 12 counts each time a coincidence determination signal is transmitted from the image signal comparison section 11, and performs an operation of resetting when a mismatch determination signal is transmitted.

Further, the signal processing unit 10 sequentially prints out the received image signals on recording paper, and when the count value of the line counter exceeds a predetermined value, stops the printout and outputs an alarm sound using the alarm means. It is supposed to be done.

Figures 2 (a) to (g) show the counting status of the line counter in response to the received image signal for each line. In Figure 2 (a), the image signal for the first line is Therefore, since the previous line does not exist (because the image signal is different from the current line), the line counter 12 is reset, and then in FIGS.
Since it is the same image signal as , the line counter 12 increments the count value. Then, in FIG. 2(d), the image signal becomes different again, so the line counter 12
is reset to zero, which is repeated, so that when the same image signal is continuously transmitted on a predetermined line and the count value of the line counter 12 exceeds a predetermined value, The system determines that the image reading status on the sending side is abnormal and stops printing.

Next, the operation of the facsimile 1 of the present invention described above will be explained in the third section.
This will be explained with reference to the flowchart shown in the figure.

(2) When the calling signal is transmitted and the call arrives, the line is connected and the data necessary for communication is transmitted and received by hand shaking (see steps 1000 to 1002 in FIG. 3).

(2) The image signal comparator 11 receives the image signal transmitted through the telephone line 1 line by line and compares it with the image signal of the previous line. Then, when the image signal of the current line is the same as the image signal of the previous line, a coincidence determination signal is output, and conversely, when the image signal of the current line is different from the image signal of the previous line, a mismatch determination signal is output ( (See steps 1004 and 1005 in FIG. 3).

■When the signal processing unit 10 receives a match determination signal from the image signal comparison unit II, it increments the count value of the line counter 12 (increases by 1), and checks that the count value of the line counter 12 has not reached a predetermined value. Sometimes, the operation of transmitting the received image signal to the print output unit 18 and printing it out on recording paper is repeated (see steps 1003 to 1009 in FIG. 3). In addition, the image signal comparison section 1
When a match determination signal is received from 1, the count value of the line counter 12 is reset, and the received image signal is transmitted to the print output section 18 to be printed out on recording paper, which is repeated (steps in FIG. 4). 1005-10
(see 09).

■When the count value of the line counter 12 reaches a predetermined value while printing is being performed in this way, the alarm means 15 outputs an alarm sound, cuts off the line, and returns to the standby state. (Figure 3 step 1007~
1011.1010).

In this embodiment, the predetermined value is calculated as the number of scanning lines of A4 paper (
1145), and if the count value of the line counter 12 exceeds this value, it is determined that there is an abnormality and reception is stopped. That is, when an all-white signal for one sheet of A4 paper is transmitted, it is determined that an abnormality has occurred in image reading on the transmitting side, and printout is stopped.

As described above, according to the facsimile of the present invention, even if a paper jam occurs on the sending side and the same image signal is continuously transmitted, the printing operation on the recording paper is automatically stopped. This makes it possible to suppress wasteful consumption of recording paper.

[Effects of the Invention] According to the present invention, when the same image signal is repeatedly transmitted due to a paper jam on the transmitting side, reception is automatically stopped, thereby preventing wasteful consumption of recording paper. This makes it possible to provide a facsimile transmitting and receiving device with improved reliability.

[Brief explanation of the drawing]

FIG. 1 is a side view of the block configuration of a facsimile according to the present invention, FIG. 2 is a diagram illustrating the operation of the line counter, and FIG. 3 is a flowchart illustrating the operation. [Explanation of symbols...Facsimile transmitting/receiving device 10...Signal processing section 11...Image signal comparison section 12...Line counter

Claims (1)

[Claims] (1) An image signal comparison unit that receives image signals transmitted through a telephone line line by line and compares them with the image signal of the previous line, and counts each time the same image signal as the previous line is received. On the other hand, a line counter is reset when an image signal different from the previous line is received, and the received image signals are sequentially printed out on recording paper, and when the count value of the line counter exceeds a predetermined value, the line counter is reset. A facsimile transmitting/receiving device comprising a signal processing unit that stops the transmission and makes necessary notifications.