JPH0246066A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent a part of the picture signals of a sheet of original from being omitted by receiving the length information of the main scanning direction and the sub scanning direction of the original, deciding the continuation termination of communication from the comparison with the capacity of the vacant area of a storing means and transmitting requested information based on an applying deciding result to an opposite facsimile equipment. CONSTITUTION:When length information is received and is transferred from a communication control part 7 to a control part 5, the control part 5 retrieves a storing capacity table 103 possessed of it self and finds a storing capacity requested to store a picture signal. Next, the capacity of the vacant area of a storing part 4 is investigated, and it is detected whether storing is possible or not from the size relation with the storing capacity requested to store the picture signal. When it is detected that it is impossible to store, the control part 5 transmits a control signal to indicate that receiving is impossible to the communication control part 7 and communication is stopped to opposite facsimile equipment, the procedure of circuit cutting is taken and the communication is ended.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) This invention relates to an improvement in a facsimile machine.

(Prior Art) Conventional facsimile machines are known to be equipped with an image signal memory as a buffer for relay communication, so-called confidential communication, and when there is no recording paper.

Such facsimile machines are designed with a sufficient capacity for image signal memory, but as the amount of image signals received and stored increases, there is no space left to store the image signals during communication, and - Part of the manuscript is missing. In this case, on the sending side, it is necessary to identify and resend the missing part of the document, resulting in the problem of wasted communication.

Problems to be Solved by the Invention) As described above, according to the conventional facsimile machine, some of the image signals of the received original are not stored because the image signal memory is full, and some of the image signals of the original are not stored. This caused a problem in that some parts were missing, resulting in wasted communication.

The present invention was made to solve the problems of conventional facsimile devices, and its purpose is to provide a facsimile device that does not perform unnecessary communication such as missing part of the image signal of the original. It is to provide.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes an image signal storage means for storing an image signal, and receiving length information in the main scanning direction and sub-scanning direction of a document to be received; Continuing communication by obtaining the storage capacity required for storage based on the length information, determining whether to continue the communication by comparing it with the capacity of the free area of the storage means, and transmitting the necessary information based on the determination result to the other party's facsimile machine. The facsimile machine is equipped with a cancellation notification means.

(Function) According to the above configuration, the communication continuation cancellation notification means determines whether the received image signal can be stored each time it receives an image signal of one sheet of document, and the required information based on the determination result is transmitted. This is given to the other party's facsimile machine, and notification of the continuation or discontinuation of communication is notified each time one document is transmitted, so that a part of the image signal of the negative document is not lost.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a communication system including a facsimile machine 1 according to an embodiment of the present invention. The facsimile machine 1 is connected to facsimile machines 9 and 10 via a switching network 8. The facsimile machine 1 is equipped with a control section 5 consisting of a microcomputer or the like that controls the entire apparatus. A communication control section 7 is connected to the control section 5, and the communication control section 7 communicates with the other party's facsimile machine using, for example, the transmission control procedure of CCITT recommendation G3. A reading section 2 , a recording section 3 , a storage section 4 , and an image processing section 6 are connected to the control section 5 . The reading section 2 not only provides the document image as an image signal to the control section 5, but also detects length information of the document in the main scanning direction and the sub-scanning direction and sends it to the control section 5. Here, as a method of detecting length information, the length information in the main scanning direction is obtained by painting the document transport path black and counting the number of pixels (white) in the first line of the document obtained by COD. And also, COD
The number of lines in the sub-scanning direction and the reading interval (j
7/m) is the length information in the sub-scanning direction. The recording section 3 performs recording output based on the image signal given from the control section 5.

The storage unit 4 stores an image signal (encoded and compressed) sent from the control unit 5. The image processing unit 6 encodes and compresses the image signal, I! It includes a stupid vertical/horizontal conversion circuit that performs encoding and decompression, and performs processing to convert the arrangement of image signals. The communication control unit 7 includes a modem and an NCU, and also includes length information in the main scanning direction and sub-scanning direction of the original given from the control unit 5 in a control signal NSS and transmits it, and vice versa. The length information of the received control signal NSS is given to the control section 5.

FIG. 2 shows a functional block diagram when the facsimile machine 1 as described above functions as a receiver.

It is assumed that the other party's facsimile machine 20 has the same configuration as the facsimile machine 1. Reference numeral 102 indicates an image signal storage means corresponding to the storage section 4 in FIG. 1, where the shaded area is the area where image signals are stored, and the capacity of the empty area is indicated by W4. The control unit 5 transmits the communication continuation stop notification means 101 based on the program of the flowchart shown in FIG.
Work as. The communication continuation cancellation notification means 101 has a storage capacity table 103, receives length information (L2.H2) in the main scanning direction and the sub-scanning direction of the document 104 sent from the other party's facsimile device 20, and based on this, The storage capacity table 103 is searched to detect the corresponding capacity W2. In the storage capacity table 103, when the lengths (Li, Hi) in the main scanning direction and the sub-scanning direction are determined, assuming that the original has characters, figures, etc. written on it as standard, the corresponding image signal is stored. The capacity is determined, and the corresponding capacity (WHVbit) of the image signal storage means 102 is stored as a memory table. Note that the image signal storage means 102 stores encoded and compressed image signals. The communication continuation cancellation notification means 101 compares the capacity W2 obtained by searching the storage capacity table 103 with the capacity W4 of the empty area of the image signal storage means 102, and determines that W2≦W.
If it is 4, it is notified to continue the communication, and if W2>W4, it is notified to stop the communication. This notification is performed from the communication control unit 7 using a predetermined control signal (for example, DCN) of the transmission control procedure. When the notification of cancellation is given to the other party's facsimile machine 20, a line disconnection procedure is performed.

The operation of the communication continuation termination notification means 101 as described above is performed by the control unit 5 according to the program shown in the flowchart of FIG. 3, and will therefore be explained with reference to FIG. The process starts with the arrival of a call, and the length information is received and passed from the communication control unit 7 to the control unit 5 (3Ql). The control unit 5 searches its own storage capacity table 103 to find the storage space required to store the image signal (302). Next, the capacity of the free space in the storage unit 4 is checked (303), and it is detected whether storage is possible based on the size relationship between the capacity of the free space in the storage unit 4 and the storage space required to store the image signal. (304)
. If storage is possible here, the control unit 5
A control signal indicating that reception is possible is transmitted to the other party's facsimile machine (305), and the process proceeds to image signal reception and storage processing (306). When the reception and storage processing of the image signal of one page of the document is completed, the control signal sent from the other party's facsimile device is given from the communication control unit 7 (for example, in G3, MPS.

It is determined whether the next page is sent from the data corresponding to the EOP) (307), and if the next page is present, the process returns to step 301, and if there is no next page, the communication control unit 7 takes steps to disconnect the line. It will be the end. On the other hand, if it is detected in step 304 that storage is not possible, the control unit 5 sends a control signal to the communication control unit 7 indicating that reception is impossible and to stop communication. The message is transmitted (30B), and the line is disconnected.

In this way, notification is made as to whether the document can be received or not for each page of the document, and unnecessary communication can be eliminated.
B) is characterized in that the operation shown in the flowchart of FIG. 4 is performed. First, a received image signal is sent to the image processing unit 6, decoded and expanded, and subjected to error correction, etc., and then encoded and compressed again and stored in the storage unit 4 (401).

Then, based on the length information of the stored image signal in the sub-scanning direction and the main scanning direction of the document, it is detected whether printing on a smaller recording paper is possible (402). For example, if the length of the original to be sent in the main scanning direction is 250 m and the length in the sub-scanning direction is 180 s, printing will be performed on the smaller A4 recording paper instead of the A3 recording paper set. is possible, so the process branches to YES.

In the case of branching to YES, the image signal is read from the storage unit 4, decoded and expanded by the image processing unit 6, and then converted vertically and horizontally by the vertical/horizontal conversion circuit (in the above example, the main scanning direction is 180AI11,
Conversion to set the sub-scanning direction to 250#1I11) is performed,
It is encoded and compressed again and stored in the storage unit 4 (403 input, then
It is determined whether to record the image signal of the original document immediately or to keep it stored because there is relay communication, confidential communication, no recording paper, etc. (404). The data for this determination is either included in and sent in a control signal from the other party's facsimile machine, or input in advance from an operation panel (not shown) of the facsimile machine 1. If it is not recorded immediately, the process immediately proceeds to step 307 in Figure 3, but
When immediate recording is specified, the recording paper (standard size paper) is selected based on whether or not the orientation has been converted (405).
, the image signal is read out from the storage section 4, sent to the image processing section 6, decoded and expanded, and further sent to the recording section 3 for recording output (
406).

In this embodiment, when communication is to be continued, a notification to that effect is provided, but in this case, the notification may be indicated by continuing the transmission control procedure normally, and the notification itself may not be made.

Furthermore, information such as length information and notification cancellation may be transmitted using a DTMF signal. In this case, the sending side has DTMF
A signal transmitting circuit and a DTMF signal receiving circuit are required on the receiving side. Furthermore, it would be more convenient to send the necessary information based on the judgment result, such as the serial number assigned to each communication and the number of pages received, so that the other party's facsimile machine can print it out or display it on the display. Become.

[Effects of the Invention] As explained above, according to the present invention, by sending the length information about each manuscript, it is possible to notify the discontinuation of communication based on whether it can be memorized or not. This eliminates communication waste such as loss of part of the image signal.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a communication system including an embodiment of the present invention, Fig. 2 is a block diagram of an embodiment of the invention, and Figs. 3 and 4 explain the operation of an embodiment of the invention. This is a flowchart for 1.9.10...Facsimile device 2...Reading unit 3...Recording unit 4...Storage unit 5...Control unit 6...Image processing unit 7...
・Communication control unit 8... Switching network 20... Other party's facsimile device 101... Communication continuation cancellation notification means 102... Image signal storage means 103... Storage capacity table agent Patent attorney Book 1) Souichi Figure 3

Claims (1)

[Scope of Claims] Image signal storage means for storing image signals; receiving length information in the main scanning direction and sub-scanning direction of a document to be received; and obtaining storage capacity required for storage based on this length information. a facsimile apparatus further comprising communication continuation termination notification means for determining whether to continue communication based on a comparison with the capacity of an empty area of the storage means and transmitting necessary information based on the determination result to the other party's facsimile apparatus.