JP2556344B2 - Fax machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile device that performs facsimile communication via a facsimile communication network.

[Prior Art] Conventional facsimile communication networks did not handle documents larger than A4 size, but as a result of expanding the services of the facsimile communication network from February 20, 1987, the facsimile machine on the transmission side , If both of the facsimile machines on the receiving side are facsimile machines capable of sending and receiving B4 size, it has become possible to send and receive B4 size documents using a facsimile communication network.

A conventional facsimile machine capable of setting A4 size recording paper and B4 size recording paper can be used for initial communication both when using a telephone network and when using a facsimile communication network. The identification signal informs the other party of the currently set recording paper size.

When communicating using the telephone network, if the other side's original is B4 size and this side's recording paper is B4 size, B4 normal size transmission is performed and the other side's original is B4 size, this If the recording paper on the side is A4 size, reduce it to B4 → A4 and transmit, the original of the other side is A4 size, the recording paper on this side
If it is A4 size or B4 size, A4 size transmission is performed.

Also, when there is no B4 size, when communicating using a facsimile communication network, when the recording paper on this side is A4 size or B4 size, the other side's original is
If it is B4 size, it is reduced to B4 → A4 and transmitted. If the original of the other party is A4 size, it is transmitted at A4 size. In other words, when communicating using a facsimile communication network that did not have a B4 service, the facsimile machine on the called side sends it out.
The 17th bit information (information indicating whether or not the maximum document width is B4) of the FIF (facsimile information field) of DIS (digital identification signal) is received or ignored and regarded as 0.

By the way, consider a case where a facsimile machine capable of setting A4 size recording paper and B4 size recording paper joins a facsimile communication network under a B4 service contract.

Fig. 3 shows the registration size, original size, and recording paper size when a conventional facsimile machine that can set A4 size recording paper and B4 size recording paper joins the facsimile communication network under the B4 service contract. It is the figure shown about the corresponding transmission.

[Problems to be Solved by the Invention] In the above conventional apparatus, when communicating using a facsimile communication network, both the registered size of the calling side terminal and the original size are B4, and the registered size of the called side terminal is B4. However, there is a problem that a communication error occurs when the recording paper size of the called terminal is A4.

[Means for Solving Problems] The present invention is a facsimile apparatus capable of setting recording paper of a first size and recording paper of a second size.
In a facsimile machine that has a contract with the facsimile communication network as a second size registration terminal under the size service contract of No. 2, when communicating using the facsimile communication network, regardless of the currently set recording paper size, When the recording paper of the first size is set, the other device notifies the other device by the initial identification signal, the other device transmits the image information in the second size, and the image information is displayed when the recording paper of the first size is set. Is reduced and recorded.

[Operation] The present invention is a facsimile apparatus capable of setting recording paper of a first size and recording paper of a second size.
In a facsimile apparatus contracted to the facsimile communication network as the second size registration terminal under the size service contract of No. 2, when the communication is performed using the facsimile communication network, regardless of the currently set recording paper size, the second When the recording paper of the first size is set, the other device notifies the other device by the initial identification signal, the other device transmits the image information in the second size, and the image information is displayed when the recording paper of the first size is set. Since the registered size of the calling terminal and the original size are both the second size, the registered size of the called terminal is the second size, and the recording paper size of the called terminal is the first size. Does not cause a communication error.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention.

 The terminal in this embodiment is a type 2 connection terminal.

It is assumed that the facsimile apparatus of the above embodiment can set A4 size recording paper and B4 size recording paper, has a B4 service contract, and has a contract with the facsimile communication network as a B4 size registration terminal. .

The NCU (network control unit) 2 connects the telephone network to the terminal of the line to control the connection of the telephone switching network, switches to the data communication path, and loops in order to use the telephone network for data communication and the like. Is to hold. Also, NCU2
When the signal levels from the control circuit 40 are 0 and 1, the telephone line 2a is connected to the telephone 4 side and the facsimile machine side (the right side portion of the NCU 2 in FIG. 1), respectively. In the normal state, the telephone line 2a is connected to the telephone 4 side. Further, the NCU 2 outputs the level 1 signal to the control circuit 40 only when detecting the call signal of 16 Hz.

The hybrid circuit 6 separates the transmission system signal and the reception system signal, sends the transmission signal from the addition circuit 20 to the telephone line 2a via NCU2, and transmits the signal from the other side to V29 via NCU2.
It is sent to the demodulator 22, the V21 demodulator 30, and the tonal signal receiving circuit 32.

The reading circuit 8 sequentially reads an image signal for one line in the main scanning direction from a transmission document and creates an example of a signal representing binary values of white and black. The reading circuit 8 is an image pickup device such as a CCD (charge coupled device) and an optical device. It is composed of a system. The encoding circuit 12 encodes the read data (MH (Modified Huffman) encoding or MR (Modified Read) encoding).

The reduction circuit 10 inputs the data from the reading circuit 8 and outputs B4
This is a circuit that reduces information to A4 information.

V27ter or V29 modulator 14 is a known CCITT recommendation V27ter
This is a modulator that performs modulation based on (differential phase modulation) or V29 (quadrature modulation). The V21 modulator 16 is a known CCITT
A modulator that performs modulation based on Recommendation V21, and modulates a procedure signal from the control circuit 40. The tonal signal transmission circuit 18 receives signals from the control circuit 40 from 1, 2, 3,
462Hz, 1090Hz, 1650Hz, 1 at 4, 5 respectively
It outputs a tonal signal of 850 Hz and 2100 Hz and outputs nothing when the signal from the control circuit 40 is zero.

The adder circuit 20 includes modulators 14 and 16 and a tonal signal transmission circuit.
It is a circuit that adds 18 outputs. The V27ter or V29 demodulator 22 performs demodulation based on the well-known CCITT recommendation V27ter or V29. The decoding circuit 24 is a circuit for decoding (MH decoding or MR decoding) the demodulated data from the demodulator 22.

The reduction circuit 26 inputs the signal from the decoding circuit 24 and outputs B4
This is a circuit that reduces information to A4 information.

The recording circuit 28, when receiving a level 0 signal from the control circuit 40, sequentially records a black and white signal line by line based on the decoded data, and also outputs a level 1 signal from the control circuit 40. It is a circuit for sequentially recording a black-and-white signal line by line based on the reduced data output from the reduction circuit 26 while receiving the data.

The V21 demodulator 30 performs demodulation based on the well-known CCITT recommendation V21. Tonal signal receiving circuit 32 is 462H
z, 1090Hz, 1300Hz, 1650Hz, 1850Hz, 2100Hz while detecting the tonal signal, 1, 2, 3,
It is a circuit that outputs 4, 5, and 6 and outputs 0 when a tonal signal is not detected.

The manual / automatic incoming call mode detection circuit 34 detects whether it is set to the manual incoming call mode or the automatic incoming call mode, and when it is set to the manual incoming call mode and the automatic incoming call mode, 0, 1 respectively. Is output.

The recording paper size detection circuit 36 is a circuit for detecting whether the set recording paper is A4 size or B4 size, and if A4 size or B4 size recording paper is set. , Which output signals of levels 0 and 1, respectively.

The document size detection circuit 38 is
This is a circuit for detecting whether the size is B4 size or B4 size, and outputs signals of level 0 and 1 if A4 size and B4 size documents are set, respectively.

In the case of communication using the telephone network, the control circuit 40 informs the partner of the currently set recording paper size by DIS, and in the case of communication using the facsimile communication network, what is the set recording paper size? Irrespective of the fact, DIS informs the other party that B4 size recording paper is set.

Then, the control circuit 40 transmits the transmitted information at the same size when the recording paper of B4 size is set or when the other party transmits the information of A4 size and the recording paper of A4 size is set. It will be recorded in. The A4 size information is information that the information of one line in the main scanning direction is 1728 bits (specifically, information in which 17 bits of FIF of DCS is set to 0).

In addition, the control circuit 40 transmits the A4
When the size-size recording paper is set, the transmitted B4 information is reduced to A4 information for recording control.
The B4 size information is information for one line in the main scanning direction.
Information that it is 2048 bits (specifically, DCS FIF 17
This is information in which the bit information is 1.

 Next, the operation of the above embodiment will be described.

2 (1), (2), (3), and (4) are flowcharts showing the control operation of the control circuit 40 in the above embodiment.

First, the control circuit 40 outputs a signal of level 0 to NCU2,
CML is turned off (S52), and it is determined whether or not a facsimile calling signal is detected (whether or not the signal regarding 1300 Hz output from NCU2 is 1) (S54). If the facsimile call signal is detected and the automatic incoming mode is selected (if the signal from the mode detection circuit 34 is 1) (S56), whether or not the 16 Hz call signal is detected (from the NCU2 to the control circuit 40). Look away
It is checked whether or not the 16 Hz signal is 1 (S58).

If 16Hz ringing signal is detected, turn on CML, set timer 1 for 2 seconds, timer 2 for 0.75 seconds (S60, S62, S64), and detect 1300Hz signal. The control circuit 40 determines whether or not (whether the signal from the tonal signal receiving circuit 32 is 3) (S66). When the 1300Hz signal is detected and timer 2 times out (that is, 0.
If 1300Hz is continuously detected for 75 seconds) (S68), control circuit 4
0 outputs the signal 5 to the tonal signal transmission circuit 18, transmits the called station identification signal (S70), waits for 75 ms (S72), and the control circuit 40 transmits the initial identification signal to the V21 modulator 16 (S74). ).

In this case, since communication is performed using the facsimile communication network, regardless of the recording paper size that is currently set, 1 is set in 17 bits of FIF of DIS and B4 size recording paper is set. Tell the other machine that it is Then, the remaining phase procedure is executed (S76), and the recording paper size detection circuit 36
The recording paper size is determined based on the signal from (S7
8) If the recording paper size is B4, check the DCS based on the procedure signal from the V21 demodulator 30, and if 17 bits of FIF of DCS is 1 (B4) (S80), B4 is the same size. The image signal is received (S82). Then, the post-procedure is performed (S92).

On the other hand, if the 17th bit of FIF of DCS is 0 (A4),
Image signals are received at A4 size (S84).

If the recording paper size is A4 (S78) and the 17 bits of the DCS FIF is 0 (S86), the information from the other party is A4 size information, so the image signal is received at A4 normal size (S88). ).

If 17 bits are 1 in S86, the information transmitted from the other party is B4 information, so the B4 information is reduced to A4 information and the image signal is received (S90). In this case, the facsimile machine performs the above reduction.

As a result, it is possible to prevent a communication error that has conventionally occurred when the document size is B4 and the recording paper size is A4.

When a facsimile calling signal is detected in S54, CML is turned on (S94), and the process proceeds to S70. If the facsimile call signal is not detected, the incoming mode is manual (S54, S56), and the facsimile communication is not selected (S96), the process returns to S54. In S66, 130
If 0 Hz is not detected, the timer 2 is set to 0.75 seconds (S98) and the timer 1 time-out is detected (S10).
0).

If a facsimile call signal is not detected and the manual call reception mode is selected and facsimile communication is selected (S54, S56, S9
6), CML is turned on, timer 1 is set to 2 seconds, and timer 2 is set to 0.75 seconds (S102, S104, S106). Then, when 1300 Hz is detected but 1300 Hz is not continuously detected for 0.75 seconds set in the timer 2 (S108, S11
0), 2 seconds after the timer 1 is set, and if the original is set (S114, S116), that is, in the transmission mode, the initial identification signal is received and the remaining pre-procedures are executed.
Send the image signal and execute the post-procedure (S118, S120, S12
2, S124).

On the other hand, in S116, if the transmission original is not set (not in the transmission mode) and the recording paper size is A4 (S126), the DIS
Set the FIF 17 bit of to 0 to transmit the initial identification signal (S12
8) Perform the remaining pre-procedures, receive the image signal (this facsimile does not reduce it), and execute the post-procedures (S1).
30, S132, S134). If the recording paper size is B4 in S126, 17 bits of FIF of DIS are set to 1 and an initial identification signal is transmitted (S136).

On the other hand, in S66, the signal of 1300Hz is not detected, and after 2 seconds set by the timer 1 has elapsed (S100), the called station identification signal is transmitted and waits for 75ms (S138, S140) to judge the recording paper size. Yes (S142). Here, if the recording paper size is A4, 17 bits of FIF of DIF are set to 0 and an initial identification signal is transmitted (S144). If the chart paper size is B4, DIS F
The 17 bits of IF are set to 1 and an initial identification signal is transmitted (S146), the remaining pre-procedures are executed, image signals are transmitted, and post-procedures are performed (S148, S150, S152). When transmitting the image signal in S150, the facsimile apparatus does not reduce the image signal when receiving the image signal.

The present invention can also be applied to a facsimile machine capable of setting a plurality of recording sheets at the same time. For example, A4,
When both B4 size recording papers can be set at the same time, when communicating using a facsimile communication network, the other party is notified by the initial identification signal that the B4 size recording paper is set. In this case, if you run out of B4 size recording paper and communicate using the telephone network,
Informs that a standard size recording paper is set, and when using a facsimile communication network, informs that a B4 size recording paper is set.

EFFECT OF THE INVENTION According to the present invention, there is provided a facsimile apparatus capable of setting a first size recording sheet and a second size recording sheet, the second size registration terminal having a second size service contract. In the facsimile machine contracted to the facsimile communication network as the above, both the registered size of the sending side terminal and the original size are the second size, and the registered size of the receiving side terminal is the second size.
Therefore, even if the recording paper size of the called terminal is the first size, the communication error does not occur.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment in which the present invention is applied to a facsimile machine. 2 (1), (2), (3), and (4) are flowcharts showing the control operation of the control circuit 40 in the above embodiment. FIG. 3 shows a registered size when a conventional facsimile machine capable of setting A4 size recording paper and B4 size recording paper is subscribed to a facsimile communication network under a B4 service contract.
FIG. 6 is a diagram showing transmission according to a document size and a recording paper size. 2 ... NCU, 4 ... Telephone, 10, 22 ... Reduction circuit, 34 ... Manual / automatic incoming mode detection circuit, 36 ... Recording paper size detection circuit, 38 ... Original size detection circuit, 40 ... Control circuit.

Claims (2)

(57) [Claims] 1. A facsimile apparatus capable of setting recording paper of a first size and recording paper of a second size, the facsimile machine comprising:
In a facsimile machine that has a contract with the facsimile communication network as a second size registration terminal under the size service contract of the above, when communicating using the facsimile communication network, regardless of the currently set recording paper size, When the recording paper of the size is set is notified to the other machine by the initial identification signal, the other machine transmits the image information in the second size, and the recording paper of the first size is set. A facsimile apparatus characterized in that the image information is reduced and recorded. 2. A facsimile machine according to claim 1, wherein when communicating using a telephone network, the size of the recording paper currently set is notified to the other machine by an initial identification signal.