JP3535568B2 - Facsimile machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is particularly applicable to subaddress signals, password signals, selective polling signals, etc.
The present invention relates to a facsimile device having a function of receiving an option signal and a facsimile communication method .

[0002]

2. Description of the Related Art In a conventional facsimile communication, for example, an initial identification signal (DIS signal), a digital command signal (DCS signal), and a digital transmission command signal (DTC signal) are formed in multi-frames so that they can be used as option signals. The frame is provided with an optional signal such as a sub-address signal (SUB signal), a password signal (PWD signal), or a selective polling signal (SEP signal).

[0003]

However, in the conventional facsimile communication, for example, DIS signal, DC
Even if the S signal and the DTC signal are transmitted in multi-frames, the fact cannot be notified by including them in the FIF (facsimile information field) of the DIS signal, the DCS signal, and the DTC signal.

Therefore, for example, when the transmitter transmits a DCS signal including a SUB signal, the partner receiver receives the SUB signal.
Judge that the operation specified by the signal is being performed. On the other hand, if the receiver cannot receive the SUB signal but can receive the DCS signal, the DCS signal does not include information indicating whether or not the SUB signal is transmitted.
Only the signal is correctly received and it is determined that there is no SUB signal. Due to the above, there is a drawback that the transmitter and the receiver are misjudged and malfunctions occur.

It is an object of the present invention to provide a facsimile apparatus which can clearly determine the presence / absence of an option signal between a transmitter and a receiver and can prevent malfunction.

[0006]

The first invention of the present application is
A digital transmission command signal is used to notify the partner device whether or not the transmission command signal includes an option signal. The second invention is whether or not the transmission command signal includes a password signal and a selective polling signal. Is notified to the other device by a digital transmission command signal.

In the third aspect of the invention, after the initial identification signal is transmitted, the presence of the password signal is declared by the digital transmission command signal, but when the password signal is not received, the initial identification signal is transmitted again. According to the fourth invention, after the initial identification signal is transmitted, the presence of the selective polling signal is declared by the digital transmission command signal, but when the selective polling signal is not received, the initial identification signal is transmitted again. It is a thing.

Further, in the fifth invention, after transmitting the initial identification signal, a password signal is transmitted by a digital transmission command signal,
Although the presence of the selective polling signal and the selective polling signal are declared, the initial identification signal is sent again when the password signal and the selective polling signal are not received.

According to the above first to fifth inventions, the option signal to be added to the DTC signal is clarified, and the DT signal is further added.
The C signal has made it clear which of the optional signals is added. Then, the control at the time of receiving the DTC group signal on the side of transmitting the initial identification signal has been clarified.

The sixth invention of the present application is to notify the partner device of whether or not the received command signal includes an option signal by a digital command signal. The seventh invention is the received command signal. A digital command signal notifies the partner device whether or not the password signal and the sub-address signal are included in.

In the eighth invention, after the initial identification signal is transmitted, the presence of the password signal is declared by the digital command signal, but when the password signal is not received, the initial identification signal is transmitted again. According to the ninth invention, after the initial identification signal is transmitted, the presence of the sub-address signal is declared by the digital command signal. However, when the sub-address signal is not received, the initial identification signal is transmitted again.

Further, in the tenth aspect of the invention, after the initial identification signal is transmitted, the presence of the password signal and the sub address signal is declared by the digital command signal. However, when two of the password signal and the sub address signal are not received, The initial identification signal is sent again.

The above sixth to tenth inventions are the patent applications filed by the applicant of the present invention on March 24, 1994 (Japanese Patent Application No.
No. 078,025), the option signal added to the DCS signal is clearly defined, and the control on the side of transmitting the initial identification signal is clarified.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a facsimile machine including the components of the respective embodiments of the present invention.

The NCU (network control unit) 2 is connected to the terminal of the line in order to use the telephone network for data communication and the like,
It controls the connection of the telephone switching network, switches to the data communication path, and holds the loop. If the signal level (signal line 36a) from the control circuit 36 is "0", the NCU 2 connects the telephone line 2a to the telephone 4 side, and if the signal level is "1", the telephone line 2a is connected. It is connected to the facsimile machine side.
In the normal state, the telephone line 2a is connected to the telephone 4 side.

The hybrid circuit 6 separates the transmission system signal and the reception system signal, sends the transmission signal from the addition circuit 16 to the telephone line 2a via the NCU 2, and receives the signal from the other side via the NCU 2. , V27te via signal line 6a
or to the V29 demodulator 20 and V21 demodulator 18.

The V21 modulator 8 is a modulator for performing the modulation based on the well-known ITU-T recommendation V21, modulates the procedure signal (signal line 36b) from the control circuit 36, and adds it through the signal line 8a. To be sent to.

The reading circuit 10 sequentially reads an image signal for one line in the main scanning direction from a transmission original, creates a signal string representing binary values of white and black, and sends this data from the signal line 10a to the encoding circuit 12. It is sent by an image pickup device such as a CCD (charge coupled device) and an optical system. Here, when the signal "0" is output to the signal line 36c, the reading in the standard mode is performed, and when the signal "1" is output, the reading in the fine mode is performed and the signal "2" is output. When output, it reads in super fine mode.

The encoding circuit 12 receives the read data output to the signal line 10a and encodes it (MR of K = 8).
(Encoding) and output from the signal line 12a.

Under the control of the signal line 36h, the memory circuit 38 stores the coded data output to the signal line 12a and outputs the stored information to the signal line 38a.

The decoding / magnification / encoding circuit 40 receives the MR-encoded information of K = 8 output to the signal line 38a, decodes it as needed, magnifies it, and encodes it again. The output information is output to the signal line 40a.

The V27ter or V29 modulator 14 inputs the coded data from the signal line 40a, and the known ITU
Modulation based on -T recommendation V27ter (differential phase modulation) or V29 (quadrature modulation) is performed, and this modulation data is output to the addition circuit 16 through the signal line 14a.

The adder circuit 16 is a circuit for adding the outputs of the modulators 8 and 14. The output of the adder circuit 16 is sent to the hybrid circuit 6.

The V21 demodulator 18 performs demodulation based on the well-known ITU-T recommendation V21. The demodulator 18 receives the procedure signal from the hybrid circuit 6 through the signal line 6a, performs V21 demodulation, and sends the demodulated data to the control circuit 36 through the signal line 18a.

The V27ter or V29 demodulator 20 performs demodulation based on the well-known ITU-T recommendation V27ter or V29. The demodulator 20 receives the modulated image signal from the hybrid circuit 6, demodulates it, and sends the demodulated data to the decoding circuit 22 through the signal line 20a.

The decoding circuit 22 receives the signal line 20 when the signal of the signal level "0" is output to the signal line 36d.
When the information output to a is input and the signal of the signal level "1" is output to the signal line 36d, the signal line 2
The information output to 6a is input, and the decoded (MH-decoded or MR-decoded) data is output to the encoding circuit 24 or the recording circuit 28 through the signal line 22a.

The encoding circuit 24 inputs the signal output to the signal line 22a, performs MR encoding of K = 8,
This encoded data is output to the memory circuit 26 via the signal line 24a.

Under the control of the signal line 36e, the memory circuit 26 stores the encoded data output to the signal line 24a, and outputs the stored data to the decoding circuit 22 via the signal line 26a.

The recording circuit 28 is in the standard mode when the signal "0" is output to the signal line 36f, and the signal "1" is output.
Is output in the fine mode, and when the signal "2" is output in the super fine mode, the data output to the signal line 22a is input, and recording is sequentially performed line by line.

The memory storage selection button 30 is a button used when the transmitter specifies that the receiver should store the memory. When the button 30 is pressed, a pressing pulse is generated on the signal line 30a.

The memory storage designation lamp 32 is a lamp that lights up when the transmitter side designates memory storage on the receiver side. The lamp 32 is extinguished when a clear pulse is generated on the signal line 36g, and thereafter, lighting-off-lighting is repeated every time a pressing pulse is generated on the signal line 30a. Then, when the light is off, the signal of the signal level "0" is output to the signal line 32a, and when the light is on, the signal of the signal level "1" is output to the signal line 32a.

The memory information output instruction button 34 is a button used when outputting the information stored in the memory circuit 26. When the button 34 is pressed, a pressing pulse is generated on the signal line 34a.

The memory box number designating button 42 is a button for designating a memory box number. Following this button 42, the information of the numeric keypad 43 is input,
Specify the memory box number. Specifically, on the transmitter side, designation of a memory box for storing data in the receiver on the partner receiver side (notified by the SUB signal to the partner receiver), and on the polling receiver side, the partner polling sender side It is used to specify which memory box of the memory box to receive the polling (the other party polling transmitter is notified by the SEP signal). When the designation button 42 is pressed, the signal line 42a
A press pulse is generated at.

The numeric keypad 43 is for inputting numerical data at the time of dialing, etc., and the numeric keypad information that has been pressed is output to the signal line 43a.

The memory polling selection button 44 is a button used when the polling receiver side designates polling reception of the information stored in the memory of the polling transmitter side. When the button 44 is pressed, a pressing pulse is generated on the signal line 44a.

The memory polling reception designation lamp 46 is
It is a lamp that specifies the memory polling reception. It turns off when a clear pulse occurs on the signal line 36i.
After that, each time the pressing pulse is generated on the signal line 44a, the light is turned on.
It goes off and on repeatedly. When it is off, it outputs a signal of signal level "0" to the signal line 46a, and when it is on, it outputs a signal of signal level "1" to the signal line 46a.

The password transmission selection button 48 is a button for selecting transmission of a password signal at the time of transmitting image information and at the time of polling reception.
When 8 is pressed, a pressing pulse is generated on the signal line 48a. Then, if it is selected to send out the password signal, if the password signal receiving side stores the password of the own device, and if it does not match the password signal sent from the transmitter side, Reject communication (reception).

Similarly, on the polling transmission side, if the password of its own machine is stored and it does not match the password signal sent from the polling receiver side, the communication (transmission) is rejected. Here, if the SUB signal is designated, the memory box for storing (receiving) the image information is determined on the receiving side, and the memory box for polling transmission is determined on the polling transmitting side.
If the SUB signal is not specified, it is selected from the memory boxes. Here, for example, 0 to 99 are considered as the memory box.

The password sending designation lamp 50 is a lamp for designating sending of a password signal at the time of transmitting image information and at the time of polling reception, and the signal line 36j.
When a clear pulse is generated on the
Every time a pressing pulse is generated in a, lighting-off-lighting-lighting is repeated. When the light is off, the signal of the signal level "0" is output to the signal line 50a, and when the light is on,
A signal of signal level "1" is output to the signal line 50a.

The password registration circuit 52 has a signal line 52a.
This is a circuit for registering the password of the device via the.

The operation section 54 has one-touch dial, speed dial, ten keys, start key, password registration key, set key, and other functions, and the pressed information is output to the signal line 54a.

In the case of transmitting, the control circuit 36 receives the initial identification signal, and if the communication specifying the memory box is selected, the DIS signal has the sub-address capability (D
If 49th bit of FIF of IS signal = 1), then SU
The memory box is designated by the B signal, and the sub address signal is designated by the DCS signal (F of the DCS signal is designated).
If the 49th bit of the IF = 1), and password communication is selected, if the DIS signal has a password capability (the 50th bit of the FIF of the DIS signal = 1),
The password registered in the apparatus is designated by the PWD signal, and the presence of the password signal is designated by the DCS signal (50th bit of FIF of DCS signal = 1).

Then, the communication designating the memory box is selected, and the DIS signal has no sub-address capability (DI
If the 49th bit of the FIF of the S signal is 0, the fact is displayed as a communication error, and password communication is selected, and the DIS signal has no password capability (the 50th bit of the FIF of the DIS signal is 0). ), It is displayed as a communication error.

On the receiver side, the 49th bit of the FIF of the DCS signal transmitted from the transmitter is input, and when the presence of the SUB signal is detected, the SUB signal cannot be received, or the DCS signal FIF is 50. In the case where the PWD signal is not received when the presence of the PWD signal is detected by inputting the bit number, the initial identification signal is transmitted again.

On the other hand, when performing polling reception, if the polling reception with the memory box specified is selected after receiving the initial identification signal, the DIS signal has a selective polling capability (there is a function for receiving the SEP signal, D
If 47th bit of FIF of IS signal = 1), SE
If the memory box is designated by the P signal, the selective polling transmission request is made by the DTC signal (the fact that the SEP signal is transmitted, the 47th bit of the FIF in the DTC signal = 1), and if the password communication is selected,
The DIS signal has a password capability (the DIS signal FIF
If the 50th bit of 1 is 1), the password registered in the device is designated by the PWD signal, and the password signal is designated by the DTC signal (FI of the DTC signal).
The 50th bit of F = 1).

Then, if the polling reception designating the memory box is selected and the DIS signal has no sub-addressing capability (the 49th bit of the FIF of the DIS signal = 0), the fact is displayed as a communication error. If password communication is selected and the DIS signal has no password capability (the 50th bit of the FIF of the DIS signal = 0), the fact is displayed as a communication error.

On the side of the polling reception, the PWD
When the signal is not sent, the 50th bit of the FTC of the DTC signal is set to 0, and when the SEP signal is not sent, the DT
The 47th bit of the FIF of the C signal is set to 0.

The polling transmitter side inputs the 50th bit of the FIF of the DTC signal transmitted from the polling receiver side and cannot detect the PWD signal when detecting the presence of the PWD signal or the FTC of the DTC signal.
If the 47th bit is input and the SEP signal is detected but the SEP signal cannot be received, the initial identification signal is sent again.

Next, DIS, DTC, D described above
Current I of 47, 49, 50 bits of FIF of CS signal
The TU recommendation and its countermeasures are explained below.

According to the ITU recommendation, DIS /
The 47th bit of the DTC FIF is assigned to the selective polling ability, the 49th bit is assigned to the sub-address ability, and the 50th bit is assigned to the password ability.
Actually, since it is possible to display the presence or absence of each capability only by each bit of DIS, the 47, 49 and 50 bits of DTC are
Both are set to "0". Also, DCS 47,
Both 49 and 50 bits are set to "0".

Therefore, under the present circumstances, the following (1)
There are problems as listed in (3).

(1) When the transmitter sends PWD / SUB / DCS and the receiver correctly receives only DCS, whether the PWD / SUB is not sent or there is an error on the line at the receiver side Unknown.

(2) Polling receiver is PWD / SEP
/ DTC is sent and the polling transmitter correctly receives only the DTC, the PWD is set on the polling transmitter side.
It is unknown whether / SEP has not been sent or an error has occurred on the line.

(3) The definition of the 47th, 49th and 50th bits of DTC is not clear.

Therefore, in this embodiment, DIS / D
The above problems are solved by defining 47 bits, 49 bits, and 50 bits of TC / DCS as follows.

First, the 47th bit of DIS is set to a bit indicating "selective polling capability = SEP receiving capability" and 4
The 9th bit is assigned to the bit indicating "sub-address capability = SUB reception capability", and the 50th bit is assigned to "password capability = PWD reception capability".

The 47th bit of the DTC is set as a bit indicating "whether or not the SEP signal is transmitted". When the SEP signal is transmitted, this bit is set to "1". When the SEP signal is not transmitted, This bit is set to "0". The 49th bit of DTC is fixed to "0". Further, the 50th bit of DTC is set as a bit indicating "whether or not the PWD signal is sent out". When the PWD signal is sent out, this bit is set to "1". When the PWD signal is not sent out, this bit is set. Set to “0”.

The 47th bit of DCS is fixed to "0". In addition, the 49th bit of DCS is set as a bit indicating "whether or not a SUB signal is transmitted". When a SUB signal is transmitted, this bit is set to "1". When a SUB signal is not transmitted, this bit is set. Set to “0”. Further, the 50th bit of the DCS is set as a bit indicating "whether or not the PWD signal is sent out". When the PWD signal is sent out, this bit is set to "1". When the PWD signal is not sent out, this bit is set. Set to “0”.

By defining as above, the above problems can be solved.

That is, in normal communication, the receiver (called) side checks the 49th bit and the 50th bit at the time of receiving the DCS. If the 49th bit and the 50th bit are checked, the SUB signal and the PWD signal are detected in the current multiframe. Whether or not it is sent can be correctly identified.

In the polling transmission, if the 47th bit and the 50th bit are checked on the polling transmitter (called) side at the time of receiving the DTC, the SEP signal and the PWD signal are transmitted in this multiframe. Whether or not it can be correctly identified.

Next, a concrete communication procedure of this embodiment based on the above definition will be described in comparison with a conventional procedure.

FIG. 2 is a sequence chart showing the procedure of this embodiment in comparison with the conventional procedure in normal communication. FIG. 2 (1) shows the case where the SUB signal and the PWD signal cannot be received. 2 shows the conventional procedure of FIG.
The procedure of this embodiment when the UB signal and the PWD signal cannot be received is shown.

As shown in the figure, in the conventional procedure of FIG. 2A, when the SUB signal and the PWD signal cannot be received,
Since both the 49th bit and the 50th bit of DCS are "0", it is determined that the other device does not send out the SUB signal and the PWD signal, but in the procedure of this embodiment of FIG.
Since both the 49th bit and the 50th bit of DCS are "1", the other device sends the SUB signal and the PWD signal, but since it judges that the reception has failed, the training (T
After receiving the r) signal and the training check (TCF) signal, the DIS signal is retransmitted, and the process proceeds to the retransmission procedure.

Further, FIG. 2C shows the SUB signal and PWD.
FIG. 2 shows a conventional procedure when no signal is transmitted, and FIG.
(4) shows the procedure of this embodiment when the SUB signal and the PWD signal are not transmitted.

In the conventional procedure of FIG. 2 (3), it is judged that the partner machine is not transmitting the SUB signal and the PWD signal as in the case of FIG. 2 (1). In this case, the judgment is correct. on the other hand,
In the procedure of the present embodiment of FIG. 2 (4), since both the 49th bit and the 50th bit of DCS are “0”, it is judged that the partner machine is not transmitting the SUB signal and the PWD signal, and the training ( Tr) signal, training check (TC
F) After receiving the signal, a reception preparation confirmation (CFR) signal is transmitted, and the process proceeds to image transmission.

As described above, in the present embodiment, it is possible to clearly determine whether or not the SUB signal and the PWD signal are transmitted in the normal image communication, and it is possible to obtain an appropriate operation.

Further, FIG. 3 shows that in polling communication,
FIG. 3A is a sequence chart showing the procedure of this embodiment in comparison with the conventional procedure. FIG. 3A shows an SEP signal and a PWD.
Fig. 3 shows a conventional procedure when a signal cannot be received.
(2) shows the procedure of this embodiment when the SEP signal and the PWD signal cannot be received.

As shown in the figure, in the conventional procedure of FIG. 3A, when the SEP signal and the PWD signal cannot be received,
Since the 47th bit and the 50th bit of DTC are both "0", it is determined that the partner machine does not send out the SEP signal and the PWD signal, but in the procedure of this embodiment of FIG.
Since the 47th bit and the 50th bit of DTC are both "1", the other device sends the SEP signal and the PWD signal, but judges that the reception has failed, so the DIS signal is retransmitted and the retransmission procedure is performed. Transition.

Further, FIG. 3 (3) shows the SEP signal and PWD.
FIG. 3 shows a conventional procedure when a signal is not transmitted, and FIG.
(4) shows the procedure of this embodiment when the SEP signal and the PWD signal are not transmitted.

In the conventional procedure of FIG. 3 (3), it is judged that the partner machine is not transmitting the SEP signal and the PWD signal as in the case of FIG. 3 (1), but in this case, the judgment is correct. on the other hand,
In the procedure of this embodiment shown in FIG. 3 (4), since the 47th bit and the 50th bit of DTC are both "0", it is judged that the partner machine does not send out the SEP signal and the PWD signal, and D
After transmitting the CS signal, the Tr signal, and the TCF signal, the process proceeds to image transmission by polling.

As described above, in this embodiment, it is possible to clearly determine whether or not the SEP signal and the PWD signal are transmitted in the polling image communication, and an appropriate operation can be obtained.

Next, FIGS. 4 to 12 are flow charts showing the operation of the control circuit 36 in this embodiment.

First, in S42, a signal of signal level "0" is output to the signal line 36a, and the CML is turned off. next,
In S44, a clear pulse is generated on the signal line 36g to clear the memory storage designation lamp 32. In this embodiment,
When the lamp 32 is on, sub-address communication is designated.

Next, in S160, a clear pulse is generated on the signal line 36i to turn off the memory polling designation lamp 46, and in S162, a clear pulse is generated on the signal line 36j to turn off the password signal transmission designation lamp 50. .

Next, in S164, the information of the signal line 54a is input, and it is judged whether or not the registration of the password of the device is selected. When the registration is selected, the process proceeds to S166, and the password of the device is input to the circuit 52. If it is registered and registration is not selected, the process proceeds to S46.

In S46, the signal lines 34a, 42a, 43
When the output of the information stored in the memory circuit 26 is selected, the process proceeds to S48, and when the output is not selected, the process proceeds to S50. .

In S48, the signal of the signal level "1" is output to the signal line 36d, and the information stored in the memory circuit 26 is output via the signal line 36e. Where SU
If the memory box is specified by the B signal, the information of the specified memory box is output, and if the password is specified by the PWD signal, the password is input,
Output information. After the recording is completed, the signal of the signal level "0" is output to the signal line 36d.

In S50, it is determined whether or not reception is selected. If reception is selected, the process proceeds to S60, and if reception is not selected, the process proceeds to S52.

In S52, it is determined whether or not the transmission is selected. If the transmission is selected, the process proceeds to S116, and if the transmission is not selected, the process proceeds to S54 and other processes are performed.

In S168, it is determined whether or not the storage of the polling transmission information in the memory is selected. If the storage is selected, the process proceeds to S170, and the information to be polled is stored in the memory circuit 38. Here, the information of the signal lines 42a and 43a can be input to specify the memory box to store. If the storage in the memory is not selected, the process proceeds to S172.

In S172, it is determined whether polling reception is selected, and if polling reception is selected, S2 is selected.
If the polling reception is not selected in S06, S4 is executed.
Go to 4.

In S60, a signal of signal level "1" is output to the signal line 36a to turn on the CML, and in S62,
Set the timer T1 to 35 seconds.

At S64, NSF / CSI / DIS signals are transmitted. Here, the 47th bit (with selective polling reception function), the 49th bit (with subaddress reception function), and the 50th bit (with password reception function) of the FIF of DIS are set to 1.

In S66, the T4 timer is set to 4.5 seconds for a manual incoming call and 3 seconds for an automatic incoming call. And
In S68, it is determined whether or not the PWD / SUB / TSI / DCS signal is received, and if it is received, the process proceeds to S72,
If not received, the process proceeds to S174. In S174, PW
It is determined whether or not the D / SEP / CIG / DTC signal is received. If the signal is received, the process proceeds to S176, and if not, the process proceeds to S70.

In S70, it is determined whether or not the T4 timer has timed out. If the T4 timer has timed out, the process proceeds to S74. If the T4 timer has not timed out, the process proceeds to S68.

In S72, it is judged whether or not the DCS signal is received. When the DCS signal is received, the process proceeds to S78 and D
If the CS signal is not received, the process proceeds to S74.

In S74, it is determined whether or not the T1 timer has timed out. When the T1 timer times out, the process proceeds to S76, and when the T1 timer has not timed out, the process proceeds to S64.

In S76, the signal of the signal level "0" is output to the signal line 36a to turn off the CML. And S
Return to 44.

In S78, it is determined whether the 49th bit or the 50th bit of the FIF of the DCS signal is 1, and if YES, the process proceeds to S80, and if NO, S98.
Proceed to.

In S80, it is determined whether the 49th bit of the FIF of the DCS signal is 1 and the 50th bit is 0, that is, whether subaddress reception is designated and password reception is not designated. If YES, If NO, the process proceeds to S82. If NO, the process proceeds to S92.

In the ITU-T acceleration recommendation, it is decided that the 47th, 49th and 50th bits of the FIF of the DCS signal are all set to 0. However, in this embodiment, when the 49th bit of the FIF of the DCS signal is 1,
The SUB signal also indicates that the SUB signal is transmitted as a multi-frame, and when 0 indicates that the SUB signal is not transmitted as a multi-frame. In addition, the FIF of the DCS signal
When the 50th bit of is 1, the PWD signal is also transmitted as a multiframe, and when it is 0, PWD signal is transmitted.
It means that the WD signal is not transmitted as a multi-frame. I promise the above.

In S82, it is judged whether or not the SUB signal is received, and when the SUB signal is received, the S8
When the memory reception is performed after 4 and the SUB signal is not received, it is determined that the reception of the SUB signal has failed, and the process returns to S74.

In S84, the remaining pre-procedures are performed, and S86 is executed.
Then, the received information is sent to the memory circuit 26 via the signal line 36e.
To store. That is, the data is stored in the memory box designated by the SUB signal. Then, in S88, the post-procedure is performed, and in S90, the signal level "0" is applied to the signal line 36a.
Signal is output to turn off CML, and the process returns to S44.

Further, in S92, it is determined whether the 49th bit of the FIF of the DCS signal is 0 and the 50th bit is 1, that is, whether subaddress reception is not designated and password reception is designated, and YES. If NO, the process proceeds to S94, and if NO, the process proceeds to S112.

In S94, it is determined whether or not the PWD signal is received. When the PWD signal is received, the process proceeds to S96, and when the PWD signal is not received, it is determined that the reception of the PWD signal has failed, and S74 Return to.

In S96, it is determined whether or not the PWD signal and the password set in the receiver (registered in the circuit 52) match, the process proceeds to S98 if they match, and the process proceeds to S98 if they do not match. It proceeds to S106.

In S98, the remaining pre-procedures are performed, and S10
At 0, image signals are received and recorded. And S1
In 02, a post-procedure is performed, and in S104, the signal line 36a.
Output a signal of signal level "0" to the CML to turn off,
Return to S46.

In step S106, the remaining pre-procedure is performed.
Here, since the passwords do not match, it is notified that the communication will be interrupted. Then, in S108, a signal having a signal level "0" is output to the signal line 36a to turn off the CML, and S1
In 10, the fact that the communication is interrupted because the passwords do not match is recorded in the communication result report.

In S112, it is judged whether or not the PWD signal is received, and if the PWD signal is received, S114.
If the PWD signal has not been received, it is determined that the reception of the PWD signal has failed, and the process returns to S74.

In S114, it is determined whether or not the PWD signal and the password signal (registered in the circuit 52) set in the receiver match, and if they match, S8
2, the process proceeds to S106 if they do not match.

In S116, a signal of signal level "1" is output to the signal line 36a to turn on the CML, and in S118, the timer T1 is set to 35 seconds.

In S120, it is determined whether or not the NSF / CSI / DIS signal is received, and the NSF / CSI / DIS signal is received.
When the signal is received, the process proceeds to S126 and NSF / CSI /
If the DIS signal is not received, the process proceeds to S122.

In S122, it is determined whether or not the timer T1 has timed out. If the timer T1 has timed out, the process proceeds to S124. If the timer T1 has not timed out, the process returns to S120.

In S124, a signal of signal level "0" is output to the signal line 36a to turn off the CML, and the process returns to S46.

At S126, the information on the signal line 50a is input to judge whether or not the password communication is selected.
If password communication is selected, the process proceeds to S128, and if password communication is not selected, the process proceeds to S138.

At S128, the FIF of the DIS signal is set to 50.
It is determined whether the bit is 1, that is, whether or not the password reception function is provided. If YES, the process proceeds to S136,
If NO, the process proceeds to S130.

At S130, the remaining pre-procedures are performed. Here, it is notified that the password communication cannot be performed. S132
Then, the signal of the signal level "0" is output to the signal line 36a to turn off the CML. Then, in S134, the fact that password communication is not possible is recorded in the communication result report, and S4
Return to 4.

At S136, the FIF of the DCS signal is set to 50.
The bit is set to 1 so that the receiver is notified that the PWD signal is to be transmitted, and the PWD signal is to be transmitted.

In S138, the signal lines 32a, 42a, 4 and
3a is input and whether sub-address communication is selected, that is, specifically, the lamp 32 is turned on,
At the same time, it is determined whether or not the memory box for storing is specified. If YES, the process proceeds to S140, and if NO, the process proceeds to S150.

In S140, the FIF of the DIS signal is set to 49.
It is determined whether or not the bit is 1, that is, whether or not the partner receiver has a sub-address receiving function, and YES
If NO, the process proceeds to S148, and if NO, the process proceeds to S142.

At S142, the remaining pre-procedures are performed. Here, it is notified that the sub-address communication cannot be performed. Then, in S144, the signal of the signal level "0" is output to the signal line 36a to turn off the CML, and in S146, the fact that the sub-address communication cannot be performed is recorded in the communication result report,
Return to S44.

Further, in S148, the 49th bit of the DCS signal is set to 1 to notify the receiver that the SUB signal is to be transmitted, and the SUB signal is to be transmitted. Then, in S150, based on S136 and S148, P
WD / SUB / TSI / DCS signals are transmitted. Further, in S152, the remaining pre-procedure is performed, and in S154, the image signal is read and transmitted. After this, S156
Then, the post-procedure is performed, and in S158, the signal of the signal level “0” is output to the signal line 36a to turn off the CML, and S4
Return to 4.

In S176, it is judged whether or not the DTC signal is received. When the DTC signal is received, the process proceeds to S178,
If the DTC signal is not received, the process proceeds to S74.

In S178, the DTC signal FIF 47 is set.
It is determined whether or not the 1st bit or the 50th bit is 1, the process proceeds to S180 if YES, S 180 if NO.
Proceed to 188.

In the ITU-T accelerated recommendation, the 47th and 50th bits of the FTC of the DTC signal are defined as the selective polling ability and the password ability, respectively. However, in this embodiment, when the 47th bit of the FTC of the DTC signal is 1, it means that the SEP signal is also transmitted as a multiframe, and when it is 0, it means that the SEP signal is not transmitted as a multiframe. Further, when the 50th bit of the FTC of the DTC signal is 1, it means that the PWD signal is not transmitted as a multiframe, and when it is 0, it means that the PWD signal is not transmitted as a multiframe. I promise the above.

At S180, the DTC signal FIF 47
Whether the bit is 1 and the 50th bit is 0, that is, it is determined whether the partner device specifies the transmission of the SEP signal as a multiframe and does not specify the transmission of the PWD signal, and the determination is YES. And S182, and if NO, S
Proceed to 196.

At S182, it is determined whether or not the SEP signal is received. When the SEP signal is received, S1 is received.
84. When no SEP signal is received, go to SEP
It is determined that the signal reception has failed, and the process returns to S74.

In S184, the remaining pre-procedures are performed, and S1
At 86, polling transmission of information stored in the memory circuit 38 is performed via the signal line 36h. Where SE
The data stored in the memory box designated by the P signal is polled and transmitted.

In S188, the remaining pre-procedures are performed, and S1
At 90, polling transmission of the information stored in the memory circuit 38 is performed via the signal line 36h. Here, polling transmission of the data stored in the memory box 0 is performed. In S192, a post-procedure is performed, and in S194, a signal of signal level "0" is output to the signal line 36a to turn off the CML and return to S44.

In S196, the DTC signal FIF 47 is set.
Whether the bit is 0 and the 50th bit is 1, that is, the other device determines whether or not the transmission of the PWD signal is designated as the multiframe and the transmission of the SEP signal is not designated, and the determination is YES. The process proceeds to S198, and if NO, S2
Go to 02.

In S198, it is determined whether or not the PWD signal is received. When the PWD signal is received, S2 is selected.
00, PWD when no PWD signal is received
It is determined that the signal reception has failed, and the process proceeds to S74.

In S200, it is determined whether or not the PWD signal and the password set in the device (registered in the circuit 52) match, and if they match, S188.
If not, go to S106.

In S202, it is determined whether or not the PWD signal is received, and when the PWD signal is received, S2 is selected.
04, when no PWD signal is received, PW
It is determined that the reception of the D signal has failed, and the process proceeds to S74.

In S204, it is determined whether or not the PWD signal and the password set in the device (registered in the circuit 52) match, and if they match, S182.
If not, the process proceeds to S106.

Step S206 represents steps S116 and S118 in FIG. 7, in which the CML is turned on and the timer T1 is set to 3 seconds.
Set 5 seconds.

S208 represents S120 of FIG. 7, and when an NSF / CSI / DIS signal is received, S212.
If no NSF / CSI / DIS signal is received, the process proceeds to S210.

In S210, which represents S122 of FIG. 7, if the timer T1 times out, the process proceeds to S124, and if not, the process proceeds to S208.

Step S212 represents step S126 in FIG. 7. When the information of the circuit 50 is input and the password communication is selected, the process proceeds to S214, and when the password communication is not selected, the process proceeds to S218.

S214 represents S128 of FIG. 7, and if the 50th bit of the DIS FIF is 1, S21 is set.
If the 50th bit of the DIS FIF is 0, the process proceeds to S130.

In step S216, the FTC of the DTC signal is set to 50.
The 1st bit is set to 1 to notify the partner device that the PWD signal is to be transmitted and to send the PWD signal.

In S218, the signal lines 46a, 42a, 4
The information of 3a is input, and it is determined whether or not the memory box to be polled is designated, that is, whether or not the lamp 46 is turned on and the memory box to be polled is designated. If YES, S2
If NO, proceed to S228.

In S220, the FIF of the DIS signal is set to 47.
It is determined whether or not the bit is 1, that is, whether or not the partner machine has the selective polling transmission function (function of receiving the SEP signal), and when YES, S2
28, and if NO, proceed to S222.

At S222, the remaining pre-procedures are performed. Here, it is notified that selective polling communication cannot be performed. Then, in S224, the signal of the signal level "0" is output to the signal line 36a to turn off the CML, and in S226, the fact that selective polling communication cannot be performed is recorded in the communication result report.

In step S228, the DTC signal FIF 47 is set.
The bit is set to 1 so that the partner device is notified that the SEP signal is to be sent and the SEP signal is to be sent.

In S230, the PWD / SEP / CIG / DTC signal is transmitted based on S216 and S228. Further, in S232, the remaining pre-procedures are performed, and S23 is performed.
In 4, the polling reception / recording of the image signal is performed. After that, in S236, the post-procedure is performed, and in S238, the signal of the signal level "0" is output to the signal line 36a to turn off the CML, and the process returns to S44.

The method of using the SEP signal and the SUB signal may be used to specify a terminal connected to the LAN or the like.

[0138]

According to the inventions of claims 1 to 4 and 9 to 12,
In this case, the initial identification signal is sent and then received from the other party.
With digital transmission command signals, there is an option signal
If it is declared but cannot receive the optional signal
Option, the initial identification signal is sent again.
If the signal fails, have the option signal retransmitted.
The effect of being able to prevent malfunctions
Play the fruit.

The invention according to claims 5-8 and 13-16 is also provided.
According to Ming, after sending the initial identification signal,
There is an option signal in the received digital command signal
Is declared but the optional signal cannot be received.
Option, the initial identification signal is sent again.
If the signal fails, have the option signal retransmitted.
The effect of being able to prevent malfunctions
Play the fruit.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a sequence chart showing a part of a normal image communication procedure in the above embodiment, in comparison with a conventional example.

FIG. 3 is a sequence chart showing a part of a polling image communication procedure in the above embodiment in comparison with a conventional example.

FIG. 4 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the first embodiment.

FIG. 6 is a flowchart showing the operation of the first embodiment.

FIG. 7 is a flowchart showing the operation of the first embodiment.

FIG. 8 is a flowchart showing the operation of the first embodiment.

FIG. 9 is a flowchart showing the operation of the first embodiment.

FIG. 10 is a flowchart showing the operation of the first embodiment.

FIG. 11 is a flowchart showing the operation of the first embodiment.

FIG. 12 is a flowchart showing the operation of the first embodiment.

[Explanation of symbols]

2 ... NCU, 4 ... phone, 6 ... hybrid circuit, 8, 14 ... Modulator, 10 ... reading circuit, 12, 24 ... Encoding circuit, 16 ... Adder circuit, 18, 20 ... Demodulator, 22 ... Decoding circuit, 26 ... Memory circuit, 28 ... recording circuit, 30 ... Memory storage selection button, 32 ... Memory storage designated lamp, 34 ... Memory information output instruction button, 36 ... Control circuit, 38 ... Memory circuit, 40 ... Decoding / magnification / encoding circuit, 42 ... button for specifying the memory box number, 43 ... numeric keypad, 44 ... Memory polling selection button, 46 ... Memory polling designated lamp, 48 ... Password signal transmission selection button, 50 ... Lamp for sending out password signal, 52 ... Password registration circuit, 54 ... Operation Department.

Claims (16)

(57) [Claims] 1. After sending an initial identification signal, the other party
The digital transmission command signal received from
No signal is declared, but the optional signal can be received.
If it is not present, the initial identification signal is sent again.
And a facsimile machine. 2. After the initial identification signal is transmitted, the other party
Although it is declared that there is a password signal in the digital transmission command signal received from the
A facsimile machine characterized in that if it is not present, the initial identification signal is transmitted again . 3. After sending the initial identification signal, the other party
In the digital transmission command signal has et received, but selective polling signal there is declared, it can not receive a selective polling signal, an initial identification signal,
A facsimile machine characterized by sending again . 4. After sending the initial identification signal, the other party
In the digital transmission command signal has et received password signal, and selective polling signal there is declared, can not receive the two passwords signals and selective polling signal, an initial identification signal, again,
A facsimile machine characterized by sending. 5. After sending the initial identification signal, the other party
Digital command signal received from
Has been declared, but cannot receive the optional signal
In this case, the initial identification signal is transmitted again.
Facsimile machine. 6. After sending the initial identification signal, the other party
In the digital command signal has et received, although there password signal is declared, it can not receive the password signal
In this case, the facsimile machine is characterized in that the initial identification signal is transmitted again . 7. After sending the initial identification signal, the other party
In al the received digital command signal, but there subaddress signal is declared, it can receive sub-address signal
A facsimile machine characterized in that if it is not present, the initial identification signal is transmitted again . 8. After sending the initial identification signal, the other party
In the digital command signal has et received password signal,
And the sub address signal is declared, but if the password signal and the sub address signal cannot be received.
In the case of a facsimile machine , the initial identification signal is transmitted again . 9. After sending the initial identification signal, the other party
The digital transmission command signal received from
No signal is declared, but the optional signal can be received.
If it is not present, the initial identification signal is sent again.
Facsimile method. 10. The other party after sending the initial identification signal
The digital transmission command signal received from the password
Signal is declared, but password signal is received
If not, the initial identification signal should be sent again.
Facsimile communication method to collect. 11. After sending the initial identification signal, the other party
The digital transmission command signal received from
It is declared that there is a polling signal, but
If the polling signal cannot be received, the initial identification signal
Facsimile transmission characterized by sending again
Method. 12. The method according to claim 12, After sending the initial identification signal, the other party
The digital transmission command signal received from the password
Signal and selective polling signal present
Password password and selective polling
If two of the signals cannot be received, the initial identification signal is
A facsimile communication method characterized by transmitting once. 13. After sending the initial identification signal, the other party
The digital command signal received from the
Although it is declared to exist, the option signal cannot be received.
If not, the initial identification signal is transmitted again.
Facsimile communication method. 14. After sending the initial identification signal, the other party
The digital command signal received from the password signal
Yes, but no password signal can be received
If not, the initial identification signal is transmitted again.
Surufu Aximili communication method. 15. After sending the initial identification signal, the other party
The digital command signal received from
Although it has been declared that there is a sub-address,
If not, the initial identification signal should be sent again.
Facsimile communication method to collect. 16. After sending the initial identification signal, the other party
The digital command signal received from
No. and sub address signal is declared,
I cannot receive the password signal and the sub-address signal
If not, the initial identification signal is transmitted again.
Facsimile communication method.