JP3554015B2 - Facsimile machine - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to transmission of a multi-frame in a facsimile pre-procedure.
[0002]
[Prior art]
In conventional facsimile communication, for example, a DIS signal, a DCS signal, and a DTC signal are each configured by a multi-frame, so that a frame for an optional signal is provided, and an optional signal such as a subaddress signal, a password signal, or a selective polling signal is provided. The transmission including a signal is performed.
[0003]
[Problems to be solved by the invention]
However, in the conventional facsimile communication, for example, even if a DIS signal, a DCS signal, and a DTC signal are transmitted in multiframes, the fact is indicated in a FIF (facsimile information field) in the DIS signal, the DCS signal, and the DTC signal. It could not be included and notified.
[0004]
Therefore, for example, when the transmitter transmits a DCS signal including a sub-address signal (hereinafter, referred to as a SUB signal), it is determined that the other receiver is performing an operation specified by the SUB signal. On the other hand, when the receiver cannot receive the SUB signal and receives the DCS signal, the receiver does not include information on whether or not the SUB signal is transmitted in the DCS signal. Is correctly received, and it is determined that there is no SUB signal. As described above, there has been a defect that the judgment between the transmitter and the receiver is out of order, resulting in malfunction.
[0005]
Further, for example, when a transmitter transmits an NSS signal and a DCS signal and a certain mode is determined by these two signals, and the receiver can receive only the DCS signal, the transmitter and the receiver There is a drawback that the mode for judging goes wrong and malfunctions. For example, if the standard and fine modes are determined by the DCS signal and the super fine mode is determined by the NSS signal, in the above case, the line density determined by the transmitter and the receiver is different, and the image is stretched. Troubles, such as being recorded in a file, occur.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a facsimile apparatus which can effectively prevent malfunction due to omission of reception of an option signal.
[0007]
[Means for Solving the Problems]
According to the present invention, when the option signal of the transmission command signal or the reception command signal is transmitted, the transmission of the option signal is notified to the partner device by the digital transmission command signal or the digital command signal.
[0008]
According to the present invention, when a sub-address signal of a transmission command signal or a reception command signal, a password signal, or a selective polling signal is transmitted, the transmission of each signal is notified to a partner device by a digital transmission command signal or a digital command signal. Notice.
[0009]
According to the present invention, when the non-standard device setting signal of the reception command signal is transmitted, the transmission of the non-standard device setting signal is notified to the partner device by the digital command signal.
[0010]
According to the present invention, when the transmission station identification signal of the reception command signal is transmitted, the transmission of the transmission station identification signal is notified to the partner device by the digital command signal.
[0011]
According to the present invention, when the non-standard device signal of the initial identification signal or the called station identification signal is transmitted, the transmission of the respective signal is notified to the other party by the digital identification signal.
[0012]
According to the present invention, when the non-standard device command signal of the transmission command signal or the calling station identification signal is transmitted, the transmission of the respective signal is notified to the other party by the digital transmission command signal.
[0013]
【Example】
FIG. 1 is a block diagram showing a first embodiment of the present invention.
[0014]
In order to use the telephone network for data communication and the like, the NCU (network control unit) 2 connects to the terminal of the line, controls connection of the telephone switching network, switches to a data communication path, performs a loop, Is held. The NCU 2 connects the telephone line 2a to the telephone 4 when the signal level (signal line 36a) from the control circuit 36 is "0", and connects the telephone line 2a when the signal level is "1". It is connected to the facsimile machine. In a normal state, the telephone line 2a is connected to the telephone 4 side.
[0015]
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, receives the signal from the other party via the NCU 2, and The signal is sent to the V29 demodulator 20 and the V21 demodulator 18 via 6a.
[0016]
The V21 modulator 8 is a modulator that performs modulation based on the known CCITT recommendation V21, modulates a procedural signal (signal line 36b) from the control circuit 36, and sends it to the addition circuit 16 through the signal line 8a. is there.
[0017]
The reading circuit 10 sequentially reads image signals for one line in the main scanning direction from a transmission document, creates a signal sequence representing binary values of white and black, and sends this data to the encoding circuit 12 from the signal line 10a. And 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, reading is performed in the standard mode, and when the signal “1” is output, reading is performed in the fine mode, and the signal “2” is output. When output is being performed, reading is performed in the super fine mode.
[0018]
The encoding circuit 12 receives the read data output to the signal line 10a, performs encoding (MH encoding or MR encoding), and outputs the encoded data from the signal line 12a.
[0019]
The V27ter or V29 modulator 14 receives the encoded data from the signal line 12a, performs modulation based on the known CCITT recommendation V27ter (differential phase modulation) or V29 (quadrature modulation), and converts the modulated data into a signal line. The signal is output to the adding circuit 16 through 14a.
[0020]
The addition circuit 16 is a circuit that adds the outputs of the modulators 8 and 14. The output of the adding circuit 16 is sent to the hybrid circuit 6.
[0021]
The V21 demodulator 18 performs demodulation based on the known CCITT recommendation V21. The demodulator 18 receives the procedure signal from the hybrid circuit 6 via the signal line 6a, performs V21 demodulation, and sends the demodulated data to the control circuit 36 via the signal line 18a.
[0022]
The V27ter or V29 demodulator 20 performs demodulation based on the known CCITT recommendation V27ter or V29. The demodulator 20 receives the modulated image signal from the hybrid circuit 6, performs demodulation, and sends out the demodulated data to the decoding circuit 22 via the signal line 20a.
[0023]
The decoding circuit 22 inputs the information output to the signal line 20a when the signal of the signal level "0" is output to the signal line 36d, and outputs the signal of the signal level "1" to the signal line 36d. In this case, the information output to the signal line 26a is input, and the decoded (MH decoded or MR decoded) data is output from the signal line 22a to the encoding circuit 24 or the recording circuit 28.
[0024]
The encoding circuit 24 receives the signal output to the signal line 22a, performs K = 8 MR encoding, and outputs the encoded data to the memory circuit 26 from the signal line 24a.
[0025]
The memory circuit 26 stores the encoded data output to the signal line 24a under the control of the signal line 36e, and outputs the stored data to the decoding circuit 22 from the signal line 26a.
[0026]
The recording circuit 28 operates in the standard mode when the signal “0” is output to the signal line 36f, the fine mode when the signal “1” is output, and the super fine mode when the signal “2” is output. The data output to the signal line 22a is input, and recording is performed line by line.
[0027]
The memory storage selection button 30 is a button used when the receiver specifies from the transmitter to store the memory. When the button 30 is pressed, a pressing pulse is generated on the signal line 30a.
[0028]
The memory storage designation lamp 32 is a lamp that is turned on when the transmission side designates that the memory storage is performed on the receiver side. The lamp 32 is turned off when a clear pulse is generated on the signal line 36g, and thereafter, every time a press pulse is generated on the signal line 30a, the lamp 32 is repeatedly turned on, turned off, and turned on. When the light is turned off, a signal of signal level "0" is output to the signal line 32a, and when the light is turned on, a signal of signal level "1" is output to the signal line 32a.
[0029]
The memory information output instruction button 34 is a button used to output information stored in the memory circuit 26. When this button 34 is pressed, a pressing pulse is generated on the signal line 34a.
[0030]
In the first embodiment, the control circuit 36 performs control for notifying the other party of whether or not a sub-address signal or a password signal is included in the received command signal by a digital command signal (DCS signal). Then, the receiver receives the DCS signal indicating that the sub-address signal or the password signal is included. If the receiver does not receive the specified sub-address signal or the password signal, the receiver transmits the signal of the DIS group again and then responds. Perform reception.
[0031]
Next, FIGS. 2 to 6 are flowcharts showing the operation of the control circuit 36 in the present embodiment.
[0032]
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 lit, the sub-address communication is designated.
[0033]
In S46, the information of the signal line 34a is input, and it is determined whether or not the output of the information stored in the memory circuit 26 is selected. When the output is selected, the process proceeds to S48, and when the output is not selected, Proceed to S50.
[0034]
In step S48, a 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. After the recording is completed, a signal of signal level "0" is output to the signal line 36d.
[0035]
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.
[0036]
In S52, it is determined whether or not transmission is selected. If transmission is selected, the process proceeds to S116, and if transmission is not selected, the process proceeds to S54 to perform other processing.
[0037]
In S60, a signal of signal level "1" is output to the signal line 36a to turn on the CML, and in S62, the timer T1 is set to 35 seconds.
[0038]
In S64, an NSF / CSI / DIS signal is transmitted. Here, the 47th bit (with the selective polling reception function), the 49th bit (with the subaddress reception function), and the 50th bit (with the password reception function) of the DIS FIF are set to 1.
[0039]
In S66, 4.5 seconds are set in the T4 timer for a manual incoming call and 3 seconds for an automatic incoming call. Then, in S68, it is determined whether or not the PWD / SUB / NSS / TSI / DCS signal has been received. If the signal has been received, the process proceeds to S72, and if not, the process proceeds to S70.
[0040]
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, and if the T4 timer has not timed out, the process proceeds to S68.
[0041]
In S72, it is determined whether or not the DCS signal has been received. If the DCS signal has been received, the process proceeds to S78, and if the DCS signal has not been received, the process proceeds to S74.
[0042]
In S74, it is determined whether or not the T1 timer has timed out. If the T1 timer has timed out, the process proceeds to S76, and if the T1 timer has not timed out, the process proceeds to S64.
[0043]
In S76, a signal of signal level "0" is output to the signal line 36a to turn off the CML. Then, the process returns to S46.
[0044]
In S78, it is determined whether or not the 49th or 50th bit of the FIF of the DCS signal is 1, and if YES, proceed to S80, and if NO, proceed to S98.
[0045]
At 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 reception is specified in the subaddress and password reception is not specified. , S82, and in the case of NO, the process proceeds to S92.
[0046]
In the CCITT acceleration recommendation, it is determined that the 47th, 49th, and 50th bits of the DCS signal FIF are all set to 0. However, in this embodiment, when the 49th bit of the FIF of the DCS signal is 1, it indicates that the SUB signal is also transmitted as a multiframe, and when it is 0, it indicates that the SUB signal is not transmitted as a multiframe. When the 50th bit of the FIF of the DCS signal is 1, it indicates that the PWD signal is also transmitted as a multiframe, and when it is 0, it indicates that the PWD signal is not transmitted as a multiframe. Above promises.
[0047]
In S82, it is determined whether or not the SUB signal is received. If the SUB signal is received, the process proceeds to S84 and thereafter, the memory reception is performed. If the SUB signal is not received, the reception of the SUB signal fails. Then, the process returns to S74.
[0048]
In S84, the remaining pre-procedure is performed, and in S86, the received information is stored in the memory circuit 26 via the signal line 36e. Then, in S88, a post-procedure is performed. In S90, a signal of the signal level "0" is output to the signal line 36a to turn off the CML, and the process returns to S46.
[0049]
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, there is no designation of receiving the sub-address and whether there is a designation of receiving the password. The process proceeds to S112 in the case of NO.
[0050]
In S94, it is determined whether a PWD signal has been received. If a PWD signal has been received, the process proceeds to S96. If a PWD signal has not been received, it is determined that the reception of the PWD signal has failed, and the process returns to S74.
[0051]
In S96, it is determined whether or not the PWD signal and the password set in the receiver match. If they match, the process proceeds to S98, and if they do not match, the process proceeds to S106.
[0052]
In S98, the remaining pre-procedure is performed, and in S100, the image signal is received and recorded. Then, in S102, a post-procedure is performed. In S104, a signal of the signal level "0" is output to the signal line 36a to turn off the CML, and the process returns to S46.
[0053]
In S106, the remaining pre-procedure is performed. Here, it is notified that the communication is interrupted because the passwords do not match. Then, in S108, a signal of the signal level "0" is output to the signal line 36a to turn off the CML, and in S110, the fact that the communication was interrupted because the password did not match is recorded in the communication result report.
[0054]
In S112, it is determined whether or not a PWD signal has been received. If a PWD signal has been received, the process proceeds to S114. If a PWD signal has not been received, it is determined that reception of the PWD signal has failed. Return.
[0055]
In S114, it is determined whether or not the PWD signal matches the password signal set in the receiver. If they match, the process proceeds to S82, and if not, the process proceeds to S106.
[0056]
In S116, the signal of the 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.
[0057]
In S120, it is determined whether or not the NSF / CSI / DIS signal has been received. If the NSF / CSI / DIS signal has been received, the process proceeds to S126. If the NSF / CSI / DIS signal has not been received, the process proceeds to S122.
[0058]
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, and if the timer T1 has not timed out, the process returns to S120.
[0059]
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.
[0060]
In S126, it is determined whether or not the password communication is selected from the operation unit (not shown). If the password communication is selected, the process proceeds to S128, and if the password communication is not selected, the process proceeds to S138.
[0061]
In S128, it is determined whether the 50th bit of the FIF of the DIS signal is 1, that is, whether or not the FIF has a password receiving function. If YES, the process proceeds to S136, and if NO, the process proceeds to S130.
[0062]
In S130, the remaining pre-procedure is performed. Here, it is notified that password communication cannot be performed. In S132, a signal of signal level "0" is output to the signal line 36a to turn off the CML. In S134, the fact that password communication is not possible is recorded in the communication result report, and the process returns to S46.
[0063]
In S136, the 50th bit of the FIF of the DCS signal is set to 1 to notify the receiver that the PWD signal will be transmitted, and to transmit the PWD signal.
[0064]
In S138, it is determined whether the sub-address communication is selected, that is, whether the lamp 32 is lit. If YES, the process proceeds to S140, and if NO, the process proceeds to S150.
[0065]
In S140, it is determined whether or not the 49 bit of the FIF of the DIS signal is 1, that is, whether or not the partner receiver has a sub-address receiving function. If YES, proceed to S148, and if NO, proceed to S142. move on.
[0066]
In S142, the remaining pre-procedure is performed. Here, it is notified that the sub-address communication cannot be performed. In S144, a signal of signal level "0" is output to the signal line 36a to turn off the CML. In S146, the fact that sub-address communication cannot be performed is recorded in a communication result report, and the process returns to S46.
[0067]
In S148, the 49th bit of the DCS signal is set to 1 to notify the receiver of the transmission of the SUB signal, and to transmit the SUB signal. Then, in S150, a PWD / SUB / NSS / TSI / DCS signal is transmitted based on S136 and S148. Further, in S152, the remaining pre-procedure is performed, and in S154, the image signal is read and transmitted. Thereafter, in S156, a post-procedure is performed, and in S158, a signal of the signal level "0" is output to the signal line 36a to turn off the CML, and the process returns to S46.
[0068]
In the first embodiment described above, the PWD and SUB signals are transmitted as the reception command signal, and at this time, the fact is notified to the FIF of the DCS signal. However, as a second embodiment of the present invention, the PWD and SEP signals may be transmitted as the transmission command signal, and at this time, the fact that these signals are being transmitted may be notified by the DTC signal FIF. Here, the presence / absence of the PWD signal is assigned to the 65th bit of the FTC of the DTC signal, and the presence / absence of the SEP signal is assigned to the 66th bit of the FIF of the DTC signal.
[0069]
Also, as a third embodiment of the present invention, whether or not a non-standard device setting (NSS) signal is included in a received command signal is notified to a partner device by, for example, the 67th bit of the FIF of the digital command signal (DCS). May be.
[0070]
For example, this is effective when the DCS signal specifies the standard or fine mode and the NSS signal specifies the super fine mode.
[0071]
FIG. 7 is a flowchart showing a part of the control in this case that is different from the first embodiment.
[0072]
First, S160 represents YES in S72. Then, in S162, it is determined whether the 67th bit of the FIF of the DCS signal is 1, that is, whether or not the NSS signal is also transmitted. If YES, the process proceeds to S164, and if NO, the process proceeds to S168 (S78).
[0073]
In S164, it is determined whether or not the NSS signal has been received. If the NSS signal has been received, the process proceeds to S168 (S78), and if the NSS signal has not been received, the process proceeds to S166 (S74).
[0074]
S170 represents YES in S120. Then, in S172, it is determined whether or not the NSF signal has been received. If the NSF signal has been received, the process proceeds to S174. If the NSF signal has not been received, the process proceeds to S178 (S126).
[0075]
In S174, it is determined whether or not to transmit the NSS signal. When transmitting the NSS signal, the process proceeds to S176, and when not transmitting the NSS signal, the process proceeds to S178 (S126).
[0076]
In step S176, the 67th bit of the FIF of the DCS signal is set to 1, the transmission of the NSS signal is specified to the other receiver, and the transmission of the NSS signal is set.
[0077]
Further, as a fourth embodiment of the present invention, whether or not the reception command signal includes a transmission station identification (TSI) signal is notified to the other party by using, for example, the 68th bit of the FIF of the digital command signal (DCS). Is also good. The operation in this case is almost the same as that of the third embodiment shown in FIG. 7, and the description is omitted.
[0078]
In the third and fourth embodiments, an initial identification signal is applied to determine whether or not a non-standard equipment (NSF) signal or a called station identification signal (CSI) is included. May be notified to the other party. For example, the presence / absence of NSF uses the 67th bit of the DIS FIF, and the presence / absence of CSI uses the 68th bit of the DIS FIF.
In the third and fourth embodiments, a transmission command signal is applied to determine whether or not a non-standard equipment command (NSC) signal or a calling station identification (CIG) signal is included in a digital transmission command (DTC). ) The other device may be notified by a signal. For example, the presence / absence of NSC uses the 67th bit of the DTC FIF, and the presence / absence of CIG uses the 68th bit of the DTC FIF.
[0079]
【The invention's effect】
As described above, according to the present invention, for example, when a DCS signal, a DIS signal, a DTC signal, and the like have a multi-frame configuration, this is indicated by the FIF (facsimile) in the DCS signal, the DIS signal, and the DTC signal. Information field) and the like, which can be notified to the other party. The DCS signal, DIS signal, DTC signal, and the like are transmitted in multiframes, and a part of the multiframe is transmitted on the receiver side of these signals. Is not received, this can be correctly recognized, and the judgment of the transmitter side and the receiver side of these signals does not differ from each other, which has the effect of eliminating malfunction.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a facsimile apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing the operation of the first embodiment of the present invention.
FIG. 3 is a flowchart showing the operation of the first embodiment.
FIG. 4 is a flowchart showing the operation of the first embodiment.
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 second embodiment of the present invention.
[Explanation of symbols]
2 ... NCU,
4: Phone,
6 ... Hybrid circuit,
8, 14 ... modulator,
10 ... Reading circuit,
12, 24 ... coding circuit,
16 ... addition circuit,
18, 20 ... demodulator,
22 ... Decoding circuit,
26 ... memory circuit,
28 ... Recording circuit,
30 ... memory storage selection button
32: memory storage designation lamp,
34 ... memory information output instruction button
36 Control circuit.

Claims (4)

Communication means for performing facsimile communication;
Notifying means for notifying the other terminal of the transmission of the option signal by a digital command signal when transmitting the option signal of the reception command signal ;
Facsimile machine characterized by having: Communication means for performing facsimile communication;
Notifying means for notifying to the partner device by a digital command signal that each signal has been transmitted when a sub-address signal or a password signal of the received command signal has been transmitted;
Facsimile machine characterized by having: Communication means for performing facsimile communication;
Notifying means for notifying, when the sub-address signal SUB or the password signal PWD, which is an optional signal, is transmitted together with the digital command signal DCS, to the other party by means of the digital command signal DCS that the respective signals have been transmitted;
Facsimile machine characterized by having: In claims 1 to 3,
A facsimile apparatus for notifying that a sub-address signal has been transmitted by an FIF bit of a digital command signal DCS having the same number as a bit number of a FIF indicating whether or not a digital identification signal DIS has a sub-address signal receiving function.

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