JP3582788B2 - Facsimile machine and control method of facsimile machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is based on ITU-T Recommendation V. 8 relates to a facsimile apparatus capable of communication and a control method of the facsimile apparatus .
[0002]
[Prior art]
In 1994, in ITU-T, Recommendation V. 8 holds, and this V.8 is established. It is conceivable to apply the procedure specified in No. 8 to a facsimile machine.
[0003]
This V. As a facsimile apparatus to which the procedure according to V.8 is applied, V.V. The facsimile apparatus which supports the procedure and image transmission specified in 34 is targeted. Here, after that, 8, the V.I. Although there is a description of 17, there is no clear communication.
[0004]
[Problems to be solved by the invention]
However, if the receiver is V. 34, and transmits an ANSam signal when an incoming call is received. 17 when a CM signal designated to communicate is received. 8 Since the communication procedure has not been clearly determined, 8 communication, V.8 17 There is a problem that communication may not be established.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a facsimile apparatus that can reliably move to the next step without causing a communication failure.
[0006]
[Means for Solving the Problems]
The present invention is based on the ITU-T Recommendation V.4. A facsimile apparatus for executing an image transmission mode executable with the destination apparatus based on the above procedure, an ANSam signal transmitting means for transmitting an ANSam signal, and a CM signal And CM signal receiving means for receiving the ANSam signal, and 34 is a facsimile machine having control means for interrupting communication when receiving a CM signal designating that communication is disabled.
In addition, the present invention relates to the method described in ITU-T Recommendation V.4 between a destination device and a destination device. A ANSam signal transmitting step of transmitting an ANSam signal in a facsimile apparatus control method for performing an image transmission mode executable with the destination apparatus based on the above procedure. , CM signal receiving step of receiving the CM signal, and transmitting the ANSam signal. 34 is a control method of a facsimile apparatus having a control step of interrupting communication when receiving a CM signal designating that communication is disabled.
[0007]
Embodiments and Examples of the Invention
[First Embodiment]
First, V.1 recommended by the ITU-T. The procedure signal No. 8 will be described.
[0008]
V. The procedure signal 8 includes a CM signal (calling menu signal), a CJ signal, and a JM signal (common menu signal).
[0009]
The CM signal is a signal transmitted from the calling DCE, and is mainly used to indicate a modulation scheme available in the calling DEC. The CM signal is in accordance with Recommendation V. 21 defined in the low-frequency channel V.21. It consists of a 300-bit / s repetitive bit string modulated by 21 (L).
[0010]
The CJ signal is a signal indicating confirmation of detection of the JM signal and termination of the CM signal. The CJ signal has a V.I. of 300 bits / s. It is modulated by 21 (L), and is composed of three consecutive "0" octets including a start bit / s and a stop bit / s.
[0011]
The JM signal is a signal transmitted from the response DEC, and is mainly used to indicate an available modulation scheme common to the calling and the response DEC. The JM signal is described in Recommendation V. High-frequency channel V.21 defined in FIG. It consists of a repetitive bit string of 300 bit / s modulated by 21 (H).
[0012]
Next, the encoding format of each of the CM signal, the CJ signal, and the JM signal will be described.
[0013]
FIG. 8 is a diagram illustrating a configuration of a preamble included in a procedure signal of FIG.
[0014]
A common encoding format is used for the CM signal, the CJ signal, and the JM signal, and the CM signal, the CJ signal, and the JM signal are configured by a repeating bit sequence. As shown in FIG. 7, one sequence is composed of 10 "1s" at first, a 10-bit synchronization code following the "1", and an octet carrying the following information. Each octet has a preceding start bit ("0") and a subsequent stop bit ("1") added thereto.
[0015]
The same V.J. Recommendation T.21 using H.21 (H) modulation. In order to avoid confusion with 30, a bit constraint is imposed on the bit arrangement such that the HDLC flag (01111110) never appears.
[0016]
Each octet belongs to one information category. This coding format allows the information category to be extended for special applications if the simplicity of the signal is preserved by the majority of applications.
[0017]
The first information category in a sequence must be the calling function. The order is not particularly specified in the information categories that follow it. All information in a category is conveyed in one octet or, if necessary, one ordered octet sequence.
[0018]
Next, the category octet will be described.
[0019]
FIG. 8 shows ITU-T Recommendation V. 8 is a diagram showing a category octet form for determining an information category of a procedure signal of No. 8. FIG.
[0020]
The category octet is the first octet to be generated in a new information category, and includes a 4-bit code that determines the information category.
[0021]
This format is configured as follows, and the indicated bits are transmitted from left to right.
[0022]
Start bit (0) b0 b1 b2 0 10 b6 b7 Stop bit (1)
As shown in FIG. 8, bits b0 to b3 form a category with b0 being the least significant bit, and bit b4 is set to "0" so that the flag is not established. B5 to b7 are option bits of the information category.
[0023]
If three option bits are insufficient to represent a particular category, any number of extended octets can immediately follow the category octet.
[0024]
The format of this extended octet is configured as shown below.
[0025]
Start bit (0) b0 b1 b2 0 10 b6 b7 Stop bit (1)
Bits b0 to b2, b6, and b7 are five bits added to the category at that time. Bit b4 is set to "1" to distinguish extended octets from category octets, and bits b3 and b5 are set to "0" so that the flag is not established.
[0026]
Next, a calling function, a modulation mode, a protocol, and a GSTN access, which are information categories determined by bits b0 to b3, will be described.
[0027]
FIG. 9 is a diagram showing an example of using bits of the calling function octet.
[0028]
Three option bits in the calling function octet are used to specify a particular calling function, as shown in FIG.
[0029]
FIG. 10 shows ITU-T Recommendation V. FIG. 14 is a diagram showing a modulation mode designated by a procedure signal of No. 8;
[0030]
A V-series modulation mode that can be used in the GSTN is specified by three codes as shown in FIG. The setting to be available is limited only if the modulation mode is available in the displayed calling function and if one wishes to communicate the capability to the remote DCE.
[0031]
FIG. 11 shows ITU-T Recommendation V. 8 is a diagram illustrating a list of codes in a protocol category in a procedure signal of No. 8. FIG.
[0032]
A list of codes in the protocol category is shown in FIG. If the LAPM protocol code is indicated by a CM signal, and the responding DCE receiving the same wants to use the LAPM, the protocol octet indicating the LAPM is also displayed in the JM signal.
[0033]
FIG. 8 is a diagram illustrating a code indicating a cellular access connected to the GSTN of a procedure signal of No. 8. FIG.
[0034]
The code indicating the cellular access connecting to the GSTN is shown in FIG.
[0035]
Next, V. The information bits of INFO0 specified in 34 will be described.
[0036]
FIG. 34 is a diagram illustrating bit definitions of an INFO0 sequence of No. 34. FIG.
[0037]
INFO0 is a signal used to indicate the transmission capability, and the bits of the signal sequence are defined as shown in FIG.
[0038]
In this embodiment, INFO0a is a signal transmitted from the called side, and INFO0c is a signal transmitted from the calling side.
[0039]
Next, a first embodiment of the present invention will be described.
[0040]
FIG. 1 is a block diagram showing a configuration of a facsimile machine FS1 according to a first embodiment of the present invention.
[0041]
As shown in FIG. 1, the facsimile apparatus FS1 includes a network control device (hereinafter, referred to as NCU) 2 connected to a telephone line 2a.
[0042]
When the telephone network is used for data communication or the like, the NCU 2 controls connection of a telephone switching network such as connection to a line terminal, switches to a data communication path, and connects the telephone line 2a to the telephone 4 and The connection between the line 2b and the hybrid circuit 6 is selectively switched.
[0043]
NCU 2 and telephone 4 are connected by signal line 2b, and NCU 2 and hybrid circuit 6 are connected by signal line 2c. The switching operation of the NCU 2 is controlled by a control circuit 20 described later. When the control signal provided from the control circuit 20 is "0" via the signal line 20a, the telephone line 2a and the telephone 4 are connected. On the other hand, when the control signal is "1", the telephone line 2a and the hybrid circuit 6 are connected. In the normal state, the telephone line 2a and the telephone 4 are connected.
[0044]
The hybrid circuit 6 separates a transmission signal from the transmission system transmitted via the telephone line 2a from a reception signal to the reception system received via the telephone line 2a.
[0045]
The transmission system includes a reading circuit 14 and an ANSam transmission circuit 10 each including an imaging device such as a CCD (Electrically Coupled Device) and an optical system.
[0046]
The reading circuit 14 sequentially reads one line of image in the main scanning direction from the transmission document, and data indicating the read image is output to a signal line 14a.
[0047]
The ANSam sending circuit 10 outputs an ANSam signal to the signal line 10a when a signal of level "1" is given from the control circuit 20 via the signal line 20d. On the other hand, when a signal of level “0” is given from the control circuit 20 via the signal line 20d, the ANSam signal is not output to the signal line 10a.
[0048]
Data output from the reading circuit 14 via the signal line 14a is supplied to the control circuit 20. The control circuit 20 encodes the data taken in via the signal line 14a, and outputs the encoded data to the modem 8 via the signal line 20b.
[0049]
The modulator / demodulator 8 modulates the coded data received from the signal line 20b to generate a modulated signal, and also demodulates the received signal fetched from the hybrid circuit 6 via the signal line 6a to convert the demodulated data. Generate. This modulation processing and demodulation processing are described in ITU-T Recommendation V. 8, V.I. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I. 34.
[0050]
The content of the modulation and demodulation processing by the modulator / demodulator 8 is indicated by a signal provided from the control circuit 20 via the signal line 20c, and the transmission mode is determined by the indicated modulation and demodulation processing.
[0051]
The modulation signal generated by the modulator / demodulator 8 is supplied to the addition circuit 12 via the signal line 8a. The addition circuit 12 adds the modulation signal from the modem 8 and the ANSam signal from the ANSam transmission circuit 10. The added signal is output to the hybrid circuit 6 via the signal line 12a, and the hybrid circuit 6 sends the added signal as a transmission signal to the telephone line 2a via the NCU 2.
[0052]
On the other hand, in the receiving system, a signal received from the partner device via the NCU 2 is output from the hybrid circuit 6 to the modem 8 via the signal line 6a. As described above, the modem 8 demodulates the received signal fetched via the signal line 6a and generates demodulated data. Demodulated data generated by the modulator / demodulator 8 is supplied to the control circuit 20 via the signal line 8b. The control circuit 20 performs processing such as decoding on the demodulated data, and the decoded data is provided to the recording circuit 16 via the signal line 20e.
[0053]
The recording circuit 16 sequentially records the image indicated by the decoded data on a recording sheet line by line.
[0054]
The data read by the reading circuit 14, the data obtained by encoding the data, the received data, and the data obtained by decoding the data are stored in the memory circuit 18 as necessary.
[0055]
The control circuit 20 receives information from the partner device and performs transmission control for transmitting information to the partner device.
[0056]
The transmission control procedure that defines this transmission control includes ITU-T Recommendation V. 8, V.I. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I. 34 procedures are used.
[0057]
Specifically, the ITU-T Recommendation V.4 communicates with the destination device. 8. A facsimile apparatus that executes a procedure specified in 8 and sets an image transmission mode executable with the destination apparatus based on the procedure. The facsimile apparatus includes an ANSam signal transmitting unit and a CM signal receiving unit. After transmitting the ANSam signal, When a CM signal designating that communication is disabled is received, communication is interrupted.
[0058]
Here, V. 34, upon receiving a CM signal designating that communication is disabled, communication is immediately interrupted due to line disconnection. And V. After the line is disconnected in the communication for receiving the CM signal designating that the communication is disabled, the response at the time of the incoming call based on the predetermined condition, without transmitting the ANSam signal, without transmitting the CANS signal and the V.34 signal. 21 DIS signal is transmitted. Here, the predetermined condition is a predetermined time thereafter.
[0059]
FIGS. 2, 3 and 4 are flowcharts showing the control operation of the above embodiment.
[0060]
At S2, V21RCV is set to 0, at S4, a signal of level "0" is output to the signal line 20a, and the CML signal is turned off. At step S6, a signal of level "0" is output to the signal line 20d. By doing so, it is set not to output the ANSam signal.
[0061]
At S8, it is determined whether or not an incoming call is selected. If no incoming call is selected, other processing is executed at S10, and the process returns to step S4. When an incoming call is selected, at S12, a signal line is sent. A signal of level "1" is output to 20a, the CML signal is turned on, and in S14, the timer T1 is set to 35 seconds.
[0062]
In S16, it is determined whether or not V21RCV is 0. If V21RCV is 0, the process proceeds to step S18, and if V21RCV is not 0, the process proceeds to step S56.
[0063]
In S18, the timer ANSTIM is set to 5 seconds, and in S20, a signal of level "1" is output to the signal line 20d, so that the ANSam signal is output.
[0064]
In S22, it is determined whether the timer ANSTIM has timed out. If the timer ANSTIM has timed out, the process proceeds to step S26. If the timer ANSTIM has not timed out, the process proceeds to step S24.
[0065]
In S24, it is determined whether a CM signal has been received. If a CM signal has been received, the process proceeds to step S44. If a CM signal has not been received, the process proceeds to step S22.
[0066]
In step S26, a signal of level "0" is output to the signal line 20d so that the ANSam signal is not output. In step S28, the T4 timer is set to 3 seconds. 21 (NSF / CSI /) DIS signal with the V.21 signal. 8 is received.
[0067]
In S32, V.V. 8 is determined, and whether or not V.8 CI signal is received is determined. If the CI signal of V.8 has been received, the process proceeds to step S34. If the CI signal of No. 8 has not been received, the process proceeds to step S36.
[0068]
In S34, it is determined whether or not the timer T1 has timed out. If the timer T1 has timed out, the process proceeds to step S4. If the timer T1 has not timed out, the process proceeds to step S18.
[0069]
In S36, V.V. It is determined whether or not the (NSS / TSI /) DCS signal has been received for the V.21 signal. If the (NSS / TSI /) DCS signal has been received, the process proceeds to step S38. If the (NSS / TSI /) DCS signal of the 21 signal has not been received, the process proceeds to step S40.
[0070]
In S38, V.V. 21, V.21 procedure. 27ter or V.I. 29, or V.I. 17 image signals are received.
[0071]
In S40, it is determined whether or not the timer T4 has timed out. If the timer T4 has timed out, the process proceeds to step S42. If the timer T4 has not timed out, the process proceeds to step S32.
[0072]
In S42, it is determined whether or not the timer T1 has timed out. If the timer T1 has timed out, the process proceeds to step S4, and if the timer T1 has not timed out, the process proceeds to step S28.
[0073]
In S44, it is determined based on the received CM signal. 34, it is determined whether half-duplex communication is possible or not. If the half-duplex communication of V.34 is possible, the process proceeds to step S46, and If half-duplex communication is not possible (here, V.21 communication is allowed, and V.27ter, V.29, or V.17 communication is allowed), the process proceeds to step S52. move on.
[0074]
In S46, V.V. In step S48, a CJ signal is received. In step S50, a V.34 signal is transmitted. In step S52, V21RCV is set to 1 and in step S54, the timer V21RCVTM is set to 5 minutes.
[0075]
In S56, it is determined whether or not the timer V21RCVTM has timed out. If the timer V21RCVTM has timed out, the process proceeds to step S58. If the timer V21RCVTM has not timed out, the process proceeds to step S60.
[0076]
In S58, 0 is set to V21RCV. 21 (NSF / CSI /) DIS signal with the V.21 signal. 8 is notified that there is no reception function. In S62, V.V. 21 (NSS / TSI /) DCS signals are received. 21 procedure execution; 27ter or V.I. 29, or V.I. 17 image signals are received.
[0077]
Next, a transmission control procedure in the above embodiment will be described.
[0078]
First, after receiving the ANSam signal from the called terminal, the V.A. The procedure of Step 34 and the transmission control procedure up to execution of image transmission will be described.
[0079]
FIG. 5 is a diagram illustrating an example of a transmission control procedure applied to the facsimile machine FS1.
[0080]
Referring to FIG. 5, the called terminal transmits a signal (ANSam signal, which is a signal obtained by modulating 2100 Hz at 15 Hz) that enables full-duplex communication. The calling party has 8, a CM signal is transmitted, and a transmission mode executable at the time of image transmission is notified to the called terminal by the CM signal.
[0081]
The called terminal that has received the CM signal notifies the calling terminal of a receivable transmission mode (V.34) among the transmission modes specified by the CM signal, and the JM signal is used for this notification.
[0082]
The calling terminal that has received the JM signal notifies the called terminal of the transmission mode by transmitting the CJ signal.
[0083]
After transmitting the CJ signal, that is, After 50 msec elapses after the completion of the 8 procedures, the calling terminal returns to V.8. In step 34, a line probing signal (INFO0c is added at the beginning) for checking the status of the telephone line 2a is transmitted. The called terminal sends out a signal (prepended with INFO0a) in response to the line probing signal from the calling terminal, and uses this signal to send out the subsequent transmission level, amplitude level correction, and transmission baud rate. Notify the calling terminal.
[0084]
The calling terminal sends out a long training signal 50 msec after sending out the line probing signal, and the called terminal adjusts the equalizer of the modem and detects the timing based on the long training signal. And so on.
[0085]
The calling terminal sends out a parameter exchange signal after 50 msec has elapsed since sending out the long training signal. The called terminal sends out a signal in response to the parameter exchange signal, and uses this signal to notify the calling terminal of the subsequent link correction and bit rate.
[0086]
After responding to the parameter exchange signal, the called terminal sends the CSI and DIS signals, sends a flag until receiving the TSI and DCS signals from the calling terminal, and after receiving the TSI and DCS signals, sends the CFR signal. Send out. After receiving the CSI and DIS signals, the calling terminal sends out the TSI and DCS signals, and sends out the flag until receiving the CFR signal from the called terminal.
[0087]
After 50 msec elapses from the sending of the flag, the calling terminal returns to the V.110. The image transmission by the image signal is started and an image signal is transmitted. After a lapse of 50 msec from the end of the image signal transmission, V.V. 34, the calling terminal sends out a PPS-MPS signal, and sends out a flag until receiving an MCF signal from the called terminal. The called terminal sends an MCF signal after receiving the PPS-MPS signal.
[0088]
After 50 msec elapses after sending the flag, the V.V. The image transmission is performed by the call terminal 34, and the image signal is transmitted again from the calling terminal. After a lapse of 50 msec from the end of the image signal transmission, V.V. 34, the calling terminal sends out a PPS-EOP signal and sends out a flag until an MCF signal is received. The called terminal transmits an MCF signal after receiving the PPS-EOP signal. Thereafter, the same procedure as described above is repeated until the image transmission ends.
[0089]
Next, after receiving the ANSam signal from the called terminal, 21, V.21 procedure. A transmission control procedure up to the execution of the image transmission of No. 17 will be described.
[0090]
FIG. 6 is a diagram showing another example of the transmission control procedure applied to the facsimile apparatus FS1.
[0091]
Referring to FIG. 6, first, the called terminal transmits ANSam, and the calling terminal transmits the ANSam. 34 transmits a CM signal that cannot be communicated. At this time, the receiver interrupts the transmission of the ANSam signal and immediately disconnects the line. Then, for the incoming call for a predetermined time thereafter, the CED signal, V.P. The NSF / CSI / DIS signal of the 21 procedure (here, the DIS signal indicates that there is no V.8 reception function) is transmitted.
[0092]
In response to this signal, the calling terminal transmits an (NSS / TSI /) DCS signal, and subsequently determines the speed by a training check signal, and 27ter or V.I. 29, or V.I. 17 is executed.
[0093]
[Second embodiment]
The second embodiment of the present invention is different from the first embodiment in that the V.V. After the line is disconnected in the communication for receiving the CM signal designating that communication is disabled, based on predetermined conditions, the response at the time of the incoming call does not transmit the ANSam signal, but transmits the CED signal and the V.34 signal. In this embodiment, the DIS signal is transmitted in the number of 21 times, and the predetermined condition is that the receiving operation has been performed a predetermined number of times thereafter.
[0094]
FIG. 6 shows that, for the first embodiment, the called terminal transmits ANSam, and the calling terminal transmits the ANSam. After receiving a CM signal that cannot be communicated and disconnecting the line, a predetermined number of calls are received as a CED signal and a V.34 signal. The NSF / CSI / DIS signal of the 21 procedure (here, the DIS signal indicates that there is no V.8 reception function) is transmitted.
[0095]
In response to this signal, the calling terminal transmits an (NSS / TSI /) DCS signal, and subsequently determines the speed by a training check signal, and 27ter or V.I. 29, or V.I. 17 is executed.
[0096]
FIG. 14 is a flowchart showing a control operation of a portion different from the flowcharts shown in FIGS. 2, 3 and 4 in the second embodiment.
[0097]
In S72, 3 is set to the counter V21RCVCNT, S74 represents S4, S76 represents NO in step S16, and in S78, it is determined whether or not the counter V21RCVCNT is 0 or less, and the counter V21RCVCNT is 0 or less. If so, the process proceeds to step S80 (S58), and if the counter V21RCVCNT is not 0 or less, the process proceeds to step S82.
[0098]
In S82, the value of the counter V21RCVCNT is decremented by one, and S84 represents S60.
[0099]
[Third embodiment]
The third embodiment of the present invention is the same as the first embodiment, except that after transmitting the ANSam signal, When receiving a CM signal designating that communication is disabled, V.34 is received. 34 is an embodiment in which a JM signal indicating that communication is impossible is transmitted, and thereafter, when a CJ signal is received, communication is interrupted due to line disconnection.
[0100]
FIG. 6 shows that, in the first embodiment, the called terminal transmits ANSam, and the calling terminal transmits VANS. FIG. 34 is a diagram illustrating transmission of a CM signal that is not capable of communication.
[0101]
The receiver has 34 After transmitting a JM signal that cannot communicate and receiving a CJ signal from the transmitter, the line is disconnected.
[0102]
FIG. 15 is a flowchart showing a control operation of a portion different from the flowcharts shown in FIGS. 2, 3 and 4 in the third embodiment.
[0103]
In step S90, the V.V. In S92, transmission of a JM signal is indicated. Here, a JM signal indicating that all communication is disabled is set.
[0104]
S94 represents the reception of the CJ signal, and S96 represents S52.
[0105]
[Fourth embodiment]
The fourth embodiment is different from the second embodiment in that after transmitting the ANSam signal, the V.11 signal is transmitted. When receiving a CM signal designating that communication is disabled, V.34 is received. 34 is an embodiment in which a JM signal indicating that communication is impossible is transmitted, and thereafter, when a CJ signal is received, communication is interrupted by disconnecting the line.
[0106]
FIG. 6 shows that, in the fourth embodiment, the called terminal transmits ANSam, and the calling terminal transmits the ANSam. FIG. 34 is a diagram illustrating transmission of a CM signal that is not capable of communication.
[0107]
The receiver has 34 After transmitting a JM signal that cannot be communicated and receiving a CJ signal from the transmitter, the line is disconnected.
[0108]
【The invention's effect】
According to the first and seventh aspects of the present invention, after transmitting the ANSam signal, the V.V. 34, when a CM signal designating that communication is disabled is received. 8 procedures, V.I. 21 procedures, V.I. 27ter or V.I. 29, or V.I. There is an effect that the line can be disconnected without proceeding to the image information receiving sequence of No. 17 and a communication failure does not occur, and the process can be reliably shifted to the next step.
[0109]
According to the second and eighth aspects of the present invention, after transmitting the ANSam signal, the V.V. 34, when a CM signal designating that communication is disabled is received. 8 procedures, V.I. 21 procedures, V.I. 27ter or V.I. 29, or V.I. When the CM signal is received without proceeding to the image information receiving sequence of No. 17, the line can be disconnected immediately, and there is an effect that the communication can be reliably shifted to the next step without causing a communication failure.
[0110]
According to the third and ninth aspects of the present invention, after transmitting the ANSam signal, the V.V. 34, when a CM signal designating that communication is disabled is received. 8 procedures, V.I. 21 procedures, V.I. 27ter or V.I. 29, or V.I. 17 before transmitting the JM signal and after receiving the CJ signal, At an appropriate timing after the completion of the eight protocols, the line can be disconnected, no communication failure occurs, and it is possible to surely shift to the next step.
[0111]
Claim 4,5, according to the invention described 10,11, after transmitting the ANSam signal, V. 34, when a CM signal designating that communication is disabled is received. 8 procedures, V.I. 21 procedures, V.I. 27ter or V.I. 29, or V.I. In this case, the line can be disconnected without proceeding to the image information receiving sequence of No. 17 and no communication trouble occurs. Further, when an incoming call is received within a predetermined time, the ANSam signal is not transmitted and the CED signal and V . 21 enables transmission of the DIS signal. 21 procedures, V.I. 27ter or V.I. 29, or V.I. This provides an effect that the seventeenth image information can be reliably received.
[0112]
According to the sixth and twelfth aspects of the present invention, after transmitting the ANSam signal, the V.V. 34, when a CM signal designating that communication is disabled is received. 8 procedures, V.I. 21 procedures, V.I. 27ter or V.I. 29, or V.I. 17 can be disconnected without proceeding to the image information receiving sequence, no communication failure occurs, and when there is an incoming call within a predetermined number of times, the ANSam signal is not transmitted and the CED signal, V. 21 enables transmission of the DIS signal. 21 procedures, V.I. 27ter or V.I. 29, or V.I. This has the effect that the seventeenth image information can be reliably received.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a facsimile machine FS1 according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing a control operation of the embodiment.
FIG. 3 is a flowchart showing a control operation of the embodiment.
FIG. 4 is a flowchart showing a control operation of the embodiment.
FIG. 5 is a diagram showing an example of a transmission control procedure applied to the facsimile machine FS1.
FIG. 6 is a diagram showing another example of the transmission control procedure applied to the facsimile apparatus FS1.
FIG. 7: ITU-T Recommendation V. 8 is a diagram illustrating a configuration of a preamble included in a procedure signal of FIG.
FIG. 8: ITU-T Recommendation V. 8 is a diagram showing a form of a category octet for determining an information category of a procedure signal of No. 8. FIG.
FIG. 9 is a diagram illustrating an example of use of bits of a calling function octet.
FIG. 10: ITU-T Recommendation V. FIG. 14 is a diagram illustrating a modulation mode specified by the procedure signal of FIG.
FIG. 11: ITU-T Recommendation V. 8 is a diagram illustrating a list of codes in a protocol category in a procedure signal of No. 8. FIG.
FIG. 12: ITU-T Recommendation V. 8 is a diagram illustrating a code indicating a cellular access connected to the GSTN of the procedure signal of No. 8. FIG.
FIG. 13 is a diagram illustrating the V.1 standard according to the ITU-T recommendations. 34 is a diagram illustrating bit definitions of an INFO0 sequence of No. 34. FIG.
FIG. 14 is a flowchart showing a control operation of a portion different from the flowcharts shown in FIGS. 2, 3 and 4 in the second embodiment.
FIG. 15 is a flowchart showing a control operation of a portion different from the flowcharts shown in FIGS. 2, 3, and 4 in the third embodiment. .
[Explanation of symbols]
FS1: facsimile machine,
2 ... NCU,
10 ... ANSam sending circuit,
14 ... Reading circuit,
16. Recording circuit,
18. Memory circuit,
20: control circuit.

Claims (12)

In accordance with ITU-T Recommendation V.5 A facsimile apparatus that executes a procedure specified in 8 and sets an image transmission mode executable with the destination apparatus based on the procedure.
ANSam signal transmitting means for transmitting an ANSam signal;
CM signal receiving means for receiving a CM signal;
After transmitting the ANSam signal, 34 control means for interrupting communication when receiving a CM signal designating that communication is disabled;
Facsimile machine characterized by having: In claim 1,
V. 34. A facsimile apparatus characterized in that upon receiving a CM signal designating that communication is disabled, communication is interrupted immediately by disconnecting the line. In claim 1,
V. When receiving a CM signal designating that communication is disabled, V.34 is received. 34. A facsimile apparatus which transmits a JM signal indicating that communication is impossible and thereafter interrupts communication as a line disconnection when receiving a CJ signal. In any one of claims 1 to 3,
V. After the line is disconnected in the communication for receiving the CM signal designating that the communication is disabled, the response at the time of the incoming call based on the predetermined condition, without transmitting the ANSam signal, without transmitting the CANS signal and the V.34 signal. 21. A facsimile apparatus for transmitting 21 DIS signals. In claim 4,
The facsimile apparatus, wherein the predetermined condition is a condition that a predetermined time elapses thereafter. In claim 4,
The facsimile apparatus according to claim 1, wherein the predetermined condition is a condition that a receiving operation is performed a predetermined number of times thereafter. In accordance with ITU-T Recommendation V.5 8 and executes an image executable with the destination device based on the above procedure. In a control method of a facsimile apparatus for setting a transmission mode,
An ANSam signal transmitting step of transmitting an ANSam signal;
Receiving a CM signal for receiving a CM signal;
After transmitting the ANSam signal, 34 a control step of interrupting communication when receiving a CM signal designating that communication is disabled;
A method for controlling a facsimile apparatus, comprising: In claim 7,
V. 34. A control method for a facsimile apparatus, wherein upon receiving a CM signal designating that communication is disabled, communication is immediately interrupted by disconnecting the line. In claim 7,
V. When receiving a CM signal designating that communication is disabled, V.34 is received. 34. A method for controlling a facsimile apparatus, comprising: transmitting a JM signal indicating that communication is impossible, and then interrupting communication as a line break when a CJ signal is received. In any one of claims 7 to 9,
V. After the line is disconnected in the communication for receiving the CM signal designating that the communication is disabled, the response at the time of the incoming call based on the predetermined condition, without transmitting the ANSam signal, without transmitting the CANS signal and the V.34 signal. 21. A method for controlling a facsimile apparatus, comprising transmitting a DIS signal. In claim 10,
The facsimile apparatus control method according to claim 1, wherein the predetermined condition is a condition that a predetermined time elapses thereafter. In claim 10,
The facsimile apparatus control method according to claim 1, wherein the predetermined condition is a condition that a receiving operation is performed a predetermined number of times thereafter.

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