JP3518024B2 - Facsimile machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine, and more particularly to a facsimile machine which transmits and receives image information and the like based on a predetermined procedure preset with a specific facsimile machine.

[0002]

2. Description of the Related Art In a facsimile machine used in a telephone network or the like, transmission and reception are performed based on a transmission control procedure standardized in CCITT. Particularly in a facsimile machine capable of transmitting a large amount of data, the T.M. Thirty
The data transmission (communication) is performed based on the standardized transmission procedure (hereinafter referred to as "standard protocol").

In recent years, for the purpose of shortening the transmission time of a large amount of data such as image data, there is a facsimile machine in which a special protocol (Protocol) is set (hereinafter referred to as "shortening protocol"). . Such a shortened protocol is used, for example, in a facsimile machine manufactured by the same manufacturer.

Some facsimile machines equipped with a shortened protocol function can be stored by pre-registering a terminal of a partner station (hereinafter referred to as "remote machine") capable of communication according to the shortened protocol. When connected to the other device that remembers that communication is possible,
It is designed to communicate using a shortened protocol.

For example, when a call is made to a partner device, it is possible to perform communication using the shortened protocol by retrieving from stored data whether the called device is set to be capable of communicating using the shortened protocol. When registered, a special signal for shifting to the shortened protocol mode is transmitted. When the partner machine (called side) detects a special signal for shifting to the shortened protocol mode, it sends a confirmation signal for shifting to the shortened protocol mode to make a call,
After confirming the transition to the shortened protocol mode on each of the called sides, communication based on transmission control by the shortened protocol is performed.

By the way, when the partner machine is set to be capable of communication using the shortened protocol, a device that cannot communicate using the shortened protocol may be replaced by a device replacement or the like. In such a case, the special signal for switching to the shortened protocol mode and the signal based on the standard protocol are selectively transmitted, and the data of the partner device is rewritten or the data of the partner device is deleted depending on the content of the response signal from the partner device. Facsimile machines that do this have been proposed.

In this way, in the facsimile apparatus in which the data of the partner machine stored by the response signal from the partner machine is rewritten, the communication is performed based on the rewritten data when the call is made to the partner machine next time. It has become.

[0008]

However, if a special signal for shifting to the shortened protocol mode is sent to a facsimile machine which cannot communicate by the shortened protocol,
Due to this special signal, the facsimile machine of the other party may cut off the line (hang up) or cannot output the response signal. In such a case, since there is no response signal from the partner device, the data is not rewritten and remains stored as a partner capable of communication using the shortened protocol, which causes a problem that communication is always unsuccessful. .

The present invention has been made in consideration of the above facts, and when a partner set to be able to communicate using the shortened protocol cannot communicate using the shortened protocol, the communication is not established. It is an object of the present invention to propose a facsimile apparatus that does not cause the problem.

[0010]

[0011]

The invention according to claim 1 is
Storage means for storing information of a partner station equipped with a terminal capable of communicating based on a preset specific protocol, and information stored in the storage means when a line is connected to the terminal of the partner station. Signal output means capable of outputting a signal instructing transition to the specific protocol based on the above; response detection means for detecting a response signal from the terminal of the partner station when connected to the terminal of the partner station; A facsimile apparatus comprising: a communication control unit that performs communication by selecting the specific protocol or a standard protocol based on the detection result of the response detection unit, based on the response signal detected by the response detection unit. Storage updating means for rewriting the memory of the storage means for the terminal of the partner station and for rewriting the information for the partner station when the terminal of the partner station is unresponsive Only when the communication with the terminal of the partner station is not established, the communication control means re-communicates with the terminal of the partner station based on the information of the storage means updated by the storage update means. To do.

According to a second aspect of the present invention, in the facsimile apparatus according to the first aspect, the re-communication is performed after the communication based on the information in the storage means before the update by the storage update means is tried a predetermined number of times. Is characterized by.

[0013]

According to the invention described in claim 1, when the terminal of the partner station (hereinafter referred to as "partner machine") remembers that communication by the particular protocol is possible, the transition to the particular protocol is performed. Communication is performed by outputting an instruction signal. In addition, it determines whether or not communication according to a specific protocol is possible according to the response signal from the partner device, performs communication, and stores information on the partner device in the storage means.

Here, when there is no response from the partner device when the signal for instructing the transition to the particular protocol is sent, it is said that the partner device cannot perform communication based on the particular protocol. The information in the storage means is updated.
After this, re-communication is performed based on the rewritten information.

[0015]

As a result, when it is stored that the communication based on the specific protocol is possible, the information in the storage means cannot be communicated by the specific protocol unless the communication with the partner machine is established. If there is, the communication is updated and redialed (redial) is performed. Therefore, it is possible to prevent the communication from being unsuccessful. Also, the other station
Even when making a call, based on the updated information of the recording means
Prevents the communication from being unsuccessful
can do.

According to the second aspect of the invention, when the communication with the partner machine is not established, after a predetermined number of trials (redial), the memory update means updates the information in the storage means. And redial again. As a result, it is possible to prevent the information stored in the storage unit for the other device from being rewritten by mistake.

The specific protocol is a communication protocol preset between predetermined facsimile machines, and may be at least partly different from the standard protocol that enables communication with an arbitrary partner machine. Good.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic structure of a facsimile apparatus 10 applied to this embodiment. This facsimile machine 10 includes an MPU 1 for controlling the operation of each part on a bus 12.
4. A ROM 16 which is a read-only memory in which a program for controlling transmission of the facsimile apparatus 10 is recorded, and a RAM 18 which is a readable / writable memory in which various information is recorded while temporarily storing image data and the like are connected. Has been done.

The bus 12 also includes a reading / scanning section 20.
And a recording scanning unit 22 are connected to each other, a reading / recording processing unit 24 for reading and recording image data, a line memory control unit 26 having a line memory, a compression / decompression unit 28 for compressing and decompressing image data, and reading. Scanning unit 20 and recording scanning unit 22
A mechanical drive unit 30 for performing mechanical drive control such as, an operation panel unit 32 provided with operation switches and a display unit, a direct memory access (DMA) controller 34, a communication control unit 38 to which a modem 36 is connected, and an NCU ( network
A control unit (network control unit) 40 is connected.

In the facsimile apparatus 10, the image information read by the reading / scanning unit 20 and processed by the reading / recording processing unit 24 is data-compressed by the compression / decompression unit 28 to be modem 36.
Terminal (remote machine) equipped with a facsimile function of the partner station selected and connected via the line 42 (for example, telephone line) from
Send to. The information received by the modem 36 via the line 42 is decompressed into image information by the compression / decompression unit 28 and output from the recording / scanning unit 22. These operations are displayed while being operated on the operation panel unit 32.

The facsimile apparatus 10 is capable of communicating in a communication procedure based on a standard protocol capable of communicating with an arbitrary partner machine, and also with a specific partner machine set in advance. Only in a communication procedure based on a specific protocol (hereinafter, referred to as “shortened protocol ” or “short professional”) for performing efficient communication of image information is possible. Note that the facsimile machine 10 stores in advance a partner machine that can communicate with the shortened protocol.

Further, the facsimile machine 10 judges whether or not the partner machine has a shortening protocol function depending on the presence or absence of a response signal from the partner machine when it is connected to the partner machine, and shortens if necessary. The stored information such as registration and deletion of the partner device that can communicate by the protocol is rewritten.

The outline of the operation of the facsimile apparatus 10 applied to this embodiment will be described below with reference to the flowchart shown in FIG.

This flow chart shows the operation when the facsimile machine 10 is the calling side. When the dial number and abbreviated number of the partner machine are input, the first step 100 is executed to make a call. At the same time, the facsimile device 10 reads the data regarding the partner device (step 102) and confirms whether the partner device has a communication function (short professional function) according to the shortened protocol (step 104).

Here, when the partner machine is not registered as having the short professional function (negative determination), step 1
When the polarity reversal of the partner device is detected in 06, the presence or absence of a response signal from the partner device is then confirmed (step 108). When there is no response signal from the partner device, or when the line with the connected partner device is disconnected, the process proceeds to step 110 and the line is disconnected and this flowchart is ended.

When the response signal from the partner device is received (affirmative determination in step 108), it is confirmed from the received response signal whether the partner device has the short professional function (step 1).
12). For example, when the response signal includes a non-standard function identification signal (NSF), the presence or absence of the short professional function of the partner device can be determined from the code in the NSF.

When it is determined in this step that the partner machine does not have the short professional function (negative determination), step 1
Then, the process shifts to 14 to perform communication processing by the standard protocol. If it is determined that the partner machine has the short professional function (Yes in step 112), step 116
Then, the information stored as having the short professional function as the data for the partner device is rewritten, and the process proceeds to the next step.

On the other hand, when it is registered as the information stored in advance that the partner machine has the short professional function (affirmative determination in step 104), when the polarity reversal of the partner machine is detected in step 118, step 120 is executed. The special tone signal for instructing the transition to the short professional mode is transmitted. As the special tone signal, for example, a tone signal having a frequency different from that of a calling tone (CNG) signal in the standard protocol can be used.

In the next step 122, it is confirmed whether or not the partner machine responds to the special tone signal. When there is a response from the partner machine (affirmative determination), the process proceeds to step 124, and the partner machine responds from this response signal. Check for short professional features. Here, when it is confirmed that the partner machine has the short professional function (affirmative determination), the process proceeds to step 126 and communication in the short professional mode is performed. On the other hand, when it is determined that the partner device does not have the short professional function due to the replacement of the terminal of the partner station (step 12)
(No judgment in 4), move to step 128 and rewrite the information for the partner machine as "no short professional function", or delete the registration when the partner machine is registered as a model equipped with the short professional function. After updating the memory, the process proceeds to step 114, and communication in the standard protocol mode is performed.

By the way, even though it is judged from the stored information that the partner machine has the short professional function, the partner machine is replaced by a model which does not have the short professional function.
Further, when the partner machine cannot receive the response signal or disconnects the line (hangs up) by receiving the special tone signal sent in step 120, the reply from the partner machine is sent. No signal can be detected (negative determination in step 122).

At this time, the process proceeds to step 130 to disconnect the line. Further, in the facsimile apparatus 10, when the line with the partner machine is disconnected in step 130,
In the next step 132, the information stored as “no short professional function” as the information for the partner machine is rewritten, the information such as deletion from the registration that the short professional function is provided is updated, and this flowchart is ended. To do.

As described above, when the partner machine is registered as having the short professional function, when the special signal for instructing the partner machine to switch to the short professional mode is sent, If there is no response signal from the machine and communication with the other machine is not established, not only disconnecting the line,
Clarify that the other machine is not a model with a short professional function. As a result, when the line is connected to the other device for the next communication, the special tone signal for instructing the transition to the short professional mode is transmitted, and the communication with the other device is reliably prevented from being lost. can do.

When the partner machine returns to the model equipped with the short professional function, the NSF included in the response signal from the partner machine when the line is connected next time is said to be the model equipped with the short professional function. Since it is possible to make a judgment and update the stored information based on this judgment, it is possible to re-register as a model having a short professional function.

Next, the communication by the facsimile apparatus 10 will be described with reference to the flowcharts shown in FIGS. 3 to 12 and FIG.
An example of a specific operation of the facsimile apparatus 10 will be described in detail with reference to communication procedure diagrams shown in FIGS. 3 (A) to 13 (C).

FIG. 3 shows a transmission routine of the facsimile apparatus 10. When the dial number and abbreviated number of the partner machine are input, the processing corresponding to the transmission phase A of the first step 140 is executed.

FIG. 4 shows a transmission phase A. When a call is initiated by dialing the partner machine, the stored information is read in the first step 170, and then the partner machine Check if there is a short professional function (step 17
2) If the partner machine is not stored as a model equipped with a short professional function, the phase A timer is started (step 174), and the CNG based on the standard protocol is started.
A signal is transmitted (step 176). Next step 1
At 78, it is confirmed whether or not there is a response signal such as a called station identification signal (CED) or a command signal from the partner device with respect to the transmitted CNG signal, and when the response signal is detected (affirmative determination),
It is determined whether the response signal includes NSF (step 180). If the response signal includes NSF (affirmative determination), it is the in-house code NSF (step 18).
2) Is it equipped with a predetermined short professional function (step 18)?
4) is judged. When the affirmative determination is made in these steps, it is determined that the partner machine is not a model having the short professional function, but it is determined that the other machine has the short professional function, and the process proceeds to step 186 to provide the short professional function. The information stored as the model is updated.

That is, as an example of the transition to the shortened protocol mode, as shown in FIG. 13C, when the partner machine stores that it does not have short professional ability, it detects CED while transmitting a CNG signal. And the N from the other machine
When the SF is received, the presence or absence of the short professional function of the partner machine is judged from the NSF, and when it is judged that the short professional function is provided, the mode is shifted to the short protocol mode.

Also, steps 180, 1 shown in FIG.
When a negative determination is made in either 82 or 184, it is determined that the model does not have the short professional function and the process proceeds to step 188. In this step 188, it is confirmed whether or not it is registered as a model having a short professional function, and when it is registered as a model having a short professional function, information on the partner machine stored in step 190 is stored. Step 19 after updating such as rewriting "without short professional function" or deleting from registration that has short professional function.
Move to 2 and set to perform communication in the standard protocol mode. If the response signal cannot be detected in step 178 and it is confirmed in step 194 that the phase A timer has reached the predetermined time (time-out), step 19
Move to 6 and disconnect the line.

On the other hand, when it is stored that the partner machine has the short professional function (Yes in step 172),
In the next step 198, the presence / absence of the polarity reversing function of the own device is confirmed, and when the polarity reversing function is not provided (negative determination), the process proceeds to step 200 to start the phase A timer, and the normal operation based on the standard protocol is performed. A CNG signal is transmitted (step 202).

At the next step 204, the transmitted CNG is transmitted.
It is confirmed whether or not the CED sent from the partner device in response to the signal is received, and when the CED is received (affirmative determination), the process proceeds to step 206 and the short professional mode is set.

When the CED from the partner machine is not detected, the routine proceeds to step 208, where it is confirmed whether a predetermined low speed command based on the standard protocol has been received. After checking the function of the machine, rewrite the data for the other machine as no short professional function.

If there is no response signal to the CNG signal from the other party even after the lapse of a predetermined time (step 2)
If a negative determination is made in 04 and 208), and the process proceeds to step 210 and time-out occurs (measurement result of the phase A timer), the process proceeds to step 212 to disconnect the line.

On the other hand, when the own device has the polarity reversing function (Yes in step 198), step 214
Then, the timer for sending out the CNG signal based on the short program is started to confirm whether the polarity of the partner machine is reversed (step 216). When the polarity of the partner machine is reversed, the process moves to step 206. . That is, in FIG.
When a call is made as shown in (A) and the partner machine has a short professional ability and a polarity reversal of the line is detected, the mode shifts to the short protocol mode.

When the polarity reversal of the partner machine is not detected even after the lapse of a predetermined time (measured by the CNG transmission start timer) (affirmative determination at step 218), step 220 is performed.
Then, the phase A timer is started and the CNG signal based on the standard protocol is transmitted (step 22).
2).

In the next step, it is confirmed whether the partner machine has reversed the polarity (step 224) or has received the CED for the transmitted CNG signal (step 226).
Here, when either of them is detected (affirmative determination in step 224 or 226), the process proceeds to step 206. For example, as shown in FIG. 13B, even if the polarity reversal cannot be detected for some reason, when the CED is received, the shortened protocol mode is entered.

On the other hand, when a negative determination is made at steps 224 and 226, the process proceeds to step 228 to check whether the low speed command is sent from the partner machine, and when there is a response by the low speed command (affirmative determination). ), The process proceeds to step 180, the function of the partner device is confirmed, the data for the partner device is rewritten, and the communication is set in the standard protocol mode. Further, when there is no response from the partner device even after the lapse of a predetermined time (negative determination in step 229), the process proceeds to step 212 to disconnect the line with the partner device, which is the next step 142 in the flowchart shown in FIG. Then, in the transmission phase A, it is confirmed whether or not the line with the partner is disconnected. When the line is connected, the process proceeds to step 144 to confirm whether or not the short professional mode is set. When the standard protocol mode is set, a negative determination is made in this step, the flow proceeds to step 146, and communication in the standard protocol mode is performed. In this embodiment, the description of the communication in the standard protocol mode is omitted.

On the other hand, when the short professional mode is set in the transmission phase A (affirmative determination in step 144),
The process proceeds to step 148, and the process corresponding to phase B is performed.

As shown in FIG. 5, in the transmission phase B, when the timer is started in the first step 230, it is confirmed whether polling reception is set next (step 231). A transition is made to 232, and a special tone signal for instructing the transition to the shortened protocol is transmitted. In addition, the next step 233
Then, a high-speed non-standard function setting signal (high-speed NSS) based on the short program is transmitted, and then reception confirmation of a response signal from the partner is performed (step 234).

Here, there is a response signal from the partner machine (affirmative judgment in step 234), and in the next step 235, the high speed non-standard function setting signal (high speed NSF) based on the short program is received from the partner machine. If it is confirmed that the other device has shifted to the short professional mode, the process proceeds to step 236 to set the transmission in the short professional mode. In addition, high-speed NS
When F is not received (negative determination in step 235), the process proceeds to step 237 and the standard protocol mode transmission is set.

On the other hand, when performing polling reception (affirmative determination in step 231), the process shifts to step 238 and a special tone signal for instructing the shift to the shortened protocol mode is transmitted, and then in step 239, a high speed operation based on the short program is performed. The non-standard function command signal (high-speed NSC) is sent. In the next step 240, it is confirmed whether or not the response signal is received. When the response signal is received (affirmative determination), the process proceeds to step 241 and it is confirmed whether or not the high speed NSS is received. Here, when the high speed NSS is received from the partner device, the process proceeds to step 242 to set the reception in the short professional mode, and when the high speed NSS is not transmitted from the partner device, the process proceeds to step 243 and the standard protocol mode is set. Set to receive.

When the response signal from the partner machine is not detected in steps 234 and 240, steps 244 and 24 are performed.
8, it is confirmed whether or not the timer started in step 230 has timed out, and when it has not timed out (negative determination), each step 24
The process shifts to 5, 249 to detect whether the polarity of the line is reversed. That is, the polarity inversion of the line is also detected in the transmission phase B, and when polarity inversion is not detected (negative determination), fallback parameters are set in steps 246 and 250, respectively, and polarity inversion is detected (positive determination). Then, the process shifts to steps 247 and 251, respectively, and the communication speed of the initial value is reset, and then the signal of the special tone and the high speed NSS or the high speed NSC are transmitted to wait for the reception of the response signal from the partner device.

By the way, when the response signal from the partner machine cannot be received even after the lapse of a predetermined time, and a negative determination is made in steps 244 and 248, it is sent because the partner machine is registered or stored as having a short professional function. It is determined that the other machine hangs up due to the special tone signal for instructing the transition to the short professional mode and cannot respond, the process proceeds to steps 252 and 254, respectively, and the line is disconnected, and the next step 253, At 255, the stored data is updated.

That is, the data for the partner machine stored as having the short professional function is rewritten as no short professional function, or the partner machine is deleted from the data stored as having the short professional function. Update the data. As a result, the next time you communicate with this partner machine, you can judge that this partner machine does not have the short professional function, so the special signal instructing the transition to the short professional mode may cause the other machine to hang up. It is possible to prevent the communication from being unsuccessfully ended, and it is possible to surely establish the communication with the partner device.

Next, in the flow chart shown in FIG.
In step 149, it is confirmed whether or not the line with the partner device is disconnected. When the line is connected (affirmative determination), the process proceeds to step 150, and it is confirmed whether the transmission is in the short protocol mode. Here, when the transmission in the short professional mode is not set (negative determination), step 152
If it is set to the standard protocol transmission (negative determination), the process proceeds to step 146. If it is set to polling reception (affirmative determination), the process proceeds to a reception routine described later.

On the other hand, when the transmission in the short professional mode is set, the process proceeds to step 154 and the process corresponding to the transmission phase C is performed.

In the first step 260 of the transmission phase C shown in FIG. 6, it is confirmed whether or not the image information (PIX) is retransmitted, and if a negative determination is made, the process proceeds to step 262 and the frame number. After transmitting NSS information in 0, the image information (PIX) is transmitted in a facsimile encoded data (FCD) frame (step 264) (FIG. 13).
(A) to FIG. 13 (C)).

In the next step 266, step 264 is executed until the transmission of the image information is completed to confirm whether the transmission of the image information is completed, and when the transmission of the image information is completed, the partial page is next written in the RCP frame. A post message command (P.M.C.) such as a signal (PPS), a plurality of page signals (MPS), a procedure end signal (EOP), etc. is inserted and transmitted (step 268).

When the image information is retransmitted (Yes in step 260), the process proceeds to step 270 and the image information requested to be retransmitted (the image information to be retransmitted) is sent in the FCD frame, and the next If it is confirmed in step 272 that the transmission of the image information to be retransmitted is completed, step 26
Move to 8.

In the flowchart shown in FIG. 3, when the processing of the transmission phase C is completed, the process proceeds to step 156, and the processing corresponding to the transmission phase D is performed. In the flowchart of the transmission phase D shown in FIG. 7, in the first step 280, the P. M. C. Check if a response signal from the other device has been received. Here, the P. M. C. When there is no response to P.P. M. C. Is sent.

At the next step 284, it is confirmed whether a low speed message confirmation signal (MCF) is received, and the low speed M
When the CF is received, the process proceeds to step 286. In step 288, it is confirmed whether the low speed partial page request signal (PPR signal) is received, and step 290
Then, it is confirmed whether or not a low speed procedure interruption acknowledge signal (PIP) is received. Here, when the low speed PIP is received (affirmative determination in step 290), the line hold procedure is performed (step 292), and the process proceeds to step 286. When neither the low-speed PPR nor the low-speed PIP is received (negative determination in steps 288 and 290),
After performing a predetermined error process (step 294), the process proceeds to step 286.

On the other hand, when the low-speed PPR is received (affirmative determination in step 288), it is confirmed whether or not a correction continuation (CTC) signal needs to be transmitted (step 296).
When the affirmative determination is made, after sending the low-speed CTC signal (step 298) and confirming the low-speed correction continuation response (CTR) signal from the partner device (step 300), the setting to shift to the transmission phase C is made. Do (Step 30)
2).

When it is not necessary to transmit the CTC signal (negative determination in step 296), the retransmission is finished (EO).
R) It is judged whether or not the signal needs to be transmitted (step 304),
When the determination is affirmative, the low-speed EOR signal is sent (step 306), and then the low-speed retransmission end response (ERR) signal (step 308) or the low-speed procedure longitudinal negation signal (PI).
N) It waits for any of the steps (step 310) to be sent from the partner machine. Here, if it is confirmed that the low speed ERR signal is transmitted from the partner machine (Yes in step 308), the process proceeds to step 286, and if it is confirmed that the low speed PIN is transmitted, the line hold procedure is performed (step 312) and then to step 286.

In step 286, the P. M. C. Depending on the setting, which one of the transmission phases B, C or the transmission phase E is to be performed next is set.

In the next step 158 of the flowchart shown in FIG. 3, the transfer destination set in the transmission phase D is confirmed, and the process shifts to any of the transmission phases B, C and E. Here, when the transition to the transmission phase E is set, the low-speed disconnection command signal (DCN) is sent to the partner machine to disconnect the line and end (step 160).

On the other hand, FIG. 8 shows a reception routine of the facsimile machine 10, and when the facsimile machine 10 is called or performs polling reception, the reception phase A of the first step 320 is executed. It Figure 9
In the first step 340 of the reception phase A flowchart shown in FIG.
In the next step 342, it is confirmed whether a call is made.

When a call is made, step 3
After shifting to No. 44 and connecting the line with the partner device, the timer for sending the CNG signal is started, and it is confirmed whether the partner device has sent the signal based on the short professional mode and received this signal (step 346). At this time, if a predetermined signal corresponding to the short professional mode is received, step 3
At 48, the short professional mode reception is set (see FIG. 13A).

When the predetermined signal based on the short professional mode is not received (negative determination in step 346), the process proceeds to step 350, and it is confirmed whether the CNG signal from the partner is received. After a predetermined time has passed, CED
Is sent. At the next step 356, it is confirmed whether or not a predetermined signal is transmitted from the partner device, and when the signal based on the short professional mode is transmitted from the partner device, the CED transmission is terminated (step 358) and the process proceeds to step 348. The process is transferred (see FIG. 13B).

When the predetermined signal has not been transmitted from the partner machine even after the predetermined time has elapsed, the CED transmission is terminated (confirmed in step 360) and the NSF or digital identification signal (DIS) is transmitted (step 362). , It is confirmed whether a predetermined signal is transmitted from the partner device (step 36).
4) When the predetermined signal for instructing the transition to the short professional mode is received from the partner machine, the process proceeds to step 348 (see FIG. 13C). On the other hand, when the predetermined signal is not received in step 364 (negative determination), the process proceeds to step 366 to set the reception in the standard protocol mode.

Next, in step 322 of the flowchart shown in FIG. 8, it is confirmed whether the short professional mode is set. If the short professional mode is not set, the process proceeds to step 324 and communication based on the standard protocol is performed. . When the short professional mode is set, the process shifts to step 326 and the process corresponding to the reception phase B is performed.

In the reception phase B flow chart shown in FIG. 10, it is confirmed in the first step 370 whether the high speed NSS is received, and in the next step 372, whether the high speed non-standard function command (NSC) signal is received. To confirm.

When the high speed NSS is received (Yes at step 370), the process proceeds to step 374 and the high speed NSF is transmitted. When the high-speed NSC signal is received (affirmative determination in step 372), the process proceeds to step 376, and it is confirmed whether the called device shifts to the polled transmission side. At this time, if it is determined to shift to poled, the process proceeds to step 378 to set the transmission in the short professional mode, and if negative determination is made, the line is disconnected after performing error processing.

In the next step 328 of the flowchart shown in FIG. 8, it is confirmed whether an error has occurred and the line is disconnected. If the line is in the connected state (affirmative determination), the process proceeds to step 330 and the short professional mode is executed. Check if it was set to send. When the transmission in the short professional mode is set, the above-mentioned transmission routine is executed to execute the transmission phase C.
Move to. Further, when the reception in the short professional mode is set, the process shifts to step 332 and the process corresponding to the reception phase C is performed.

In the flow chart of the reception phase C shown in FIG. 11, it is confirmed at the first step 390 whether or not the facsimile coded data (FCD) frame transmitted from the partner machine is received. ． Check whether NSS of 0 is received,
If not received, the process proceeds to step 394 to receive and store the image information sent from the partner device.

On the other hand, when NSS is received (step 3
If the affirmative determination is made in step 92), the process proceeds to step 396 and the NS
The information contained in S is analyzed. This flowchart is executed until it is confirmed in step 398 that the reception of the predetermined FCD frame is completed, and after the negative determination is made in step 390, the P. M.
When it is confirmed that the RCP frame including C is received, the process ends.

At the next step 334 in the flow chart shown in FIG. 8, a process corresponding to the reception phase D is performed. In the first step 410 of the reception phase D shown in FIG. M. C. It is confirmed whether or not an RCP frame including is received, and at 412, it is confirmed whether or not a low speed command is received. When an affirmative determination is made in any step, the process proceeds to step 414, and it is confirmed whether all FCD frames have been received in the reception phase C.

When an affirmative decision is made in this step 414, it is decided whether or not the line hold is to be carried out in step 416. When line hold is to be made (affirmative decision), the line is held in step 418. After the execution, go to step 420. On the other hand, when a negative determination is made in step 416, the process proceeds to step 352, low-speed MCF is sent out, and then the process proceeds to step 420.

On the other hand, when a negative determination is made in step 414, the flow proceeds to step 424 to send out the low speed PPR, and then it is confirmed in step 426 whether the CTC signal is received. When the CTC signal is received, step 428
After shifting to (4) and transmitting the low-speed CTR signal, shift to receiving phase C is set (step 430).

When the CTC signal has not been received (negative determination in step 426), the process proceeds to step 432 to check whether the EOR signal has been received. If not, the process proceeds to step 430, When the EOR signal is received, the process proceeds to step 434. In this step 434, it is determined whether or not the line hold is performed,
When the line hold is performed, the process proceeds to step 436, the line hold procedure is performed, and then the process proceeds to step 420. When the line hold is not necessary, step 4 is performed.
After shifting to 38 and transmitting the low speed ERR signal, the routine proceeds to step 420.

In this step 420, the P. M. C. Based on, set the phase to move to next.

When the processing of the reception phase D is completed, FIG.
In the flowchart shown in FIG. 3, the transfer destination set in the reception phase D is selected and executed (step 33).
6). Here, when the reception phase E is selected and the next DCN is received, the line is disconnected and the reception is ended.

As described above, in the facsimile machine 10,
Not only communication based on a standard protocol but also communication based on a predetermined protocol (abbreviated protocol) set in advance with a specific partner device is possible. In addition, a partner machine capable of communication using the shortened protocol is input to the facsimile device 10 in advance, and when making a call to the partner machine, it is determined whether communication by the short stay protocol is possible and the connection status with the partner machine is established. According to the above, data is appropriately rewritten to the partner device capable of communicating with the shortened protocol, so that efficient communication with the partner device is possible. In addition, as the facsimile device 10,
A redial function may be provided to call the partner device again when the communication is not established because the caller device is not properly connected. This point will be described with reference to the flowchart shown in FIG. In addition,
The basic configuration of the flowchart shown in FIG. 14 is the same as that of the flowchart shown in FIG. 2, and the same steps are designated by the same reference numerals and the description thereof will be omitted.

In this flowchart, when a partner station for communication is set, a call is made, and it is confirmed from the stored data for the partner machine whether there is a communication function by the shortened protocol of the partner machine.

When the line is connected to the partner device that does not have the communication function in the short professional mode, the reply signal from the partner device according to the standard protocol is confirmed, and the reply signal from the partner device is confirmed. If not, step 11
When the line is switched to 0 and the connected line is disconnected, it is checked in the next step 111 whether or not redialing is performed a preset number of times (for example, N ₂ times). The process shifts to 100, and the call is made again.

On the other hand, when it is stored that the partner machine with which the communication is made has a short professional function, in step 120, a special tone signal based on the short professional character is transmitted, and then in step 122, a response signal from the partner machine. When there was no
It is determined that the partner machine has hung up due to the special tone signal, and the process proceeds to step 130 to disconnect the line. Here, the process proceeds to step 131, the number of redials is counted, and when the number of redials has not reached a predetermined number (for example, N ₁ times), the process proceeds to step 100 again to make a call.

After that, even if the redialing is performed a predetermined number of times, if the line with the partner machine is disconnected (affirmative determination in step 131), the process proceeds to step 132, and the data for the partner machine is changed to "no short professional function". After rewriting "," the process proceeds to step 100 to make a call. At this time, since it is determined in step 104 that there is no short professional function, the process proceeds to step 106 and communication is performed in a procedure based on the standard protocol.

As described above, even though the partner machine is set to have the communication function based on the shortened protocol, the model does not have the shortened protocol function and the special tone signal for instructing the shift to the shortened protocol is used. Even if the model causes a hang-up, it is possible to prevent the communication from becoming unsuccessful. Further, after redialing a predetermined number of times (N ₁ times), the data is corrected with respect to the function of the partner device, so that the data is prevented from being rewritten by mistake even though the communication function is provided by the shortened protocol. be able to.

Note that these flowcharts show an example of the operation of the facsimile apparatus 10 applied to this embodiment, and do not limit the operation of the facsimile apparatus to which the present invention is applied. INDUSTRIAL APPLICABILITY The present invention can be applied to a facsimile apparatus that performs communication using any protocol other than the standardized protocol, and may perform communication in a procedure based on the protocol set between the respective facsimile apparatuses.

[0089]

As described above, in the facsimile apparatus of the present invention, the terminal of the partner station, which remembers that the communication by the specific protocol is possible, cannot communicate by the specific protocol and the specific protocol is not possible. when the communication becomes impossible or response would cut the line has not been established by a signal that instructs the transition to, for updating and re-communicate rewrites the memory storage means, reliably communicate Is established
It has an excellent effect that can be made.

Further, in the present invention, communication with the terminal is next made.
When performing, communication can be surely established.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a facsimile apparatus.

FIG. 2 is a flowchart showing an outline of the operation of the facsimile apparatus applied to this embodiment.

FIG. 3 is a flowchart showing an example of a transmission routine of the facsimile apparatus.

FIG. 4 is a flowchart showing a transmission phase A.

FIG. 5 is a flowchart showing a transmission phase B.

FIG. 6 is a flowchart showing a transmission phase C.

FIG. 7 is a flowchart showing a transmission phase D.

FIG. 8 is a flowchart showing an example of a reception routine of the facsimile apparatus.

FIG. 9 is a flowchart showing a reception phase A.

FIG. 10 is a flowchart showing a reception phase B.

FIG. 11 is a flowchart showing a reception phase C.

FIG. 12 is a flowchart showing a reception phase D.

13A to 13C are communication procedure diagrams showing the operation of the facsimile apparatus.

FIG. 14 is a flowchart showing another example of the operation of the facsimile device.

[Explanation of symbols]

10 Facsimile machine 14 MPU 18 RAM 36 modem 20 scanning unit 22 Recording scanning unit 38 Communication control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Sakayama 3-7-1, Iwatsuki City, Saitama Prefecture Fuji Xerox Co., Ltd. Iwatsuki Plant (72) Inventor Yoshiaki Tezuka 3-7-1, Iwatsuki City, Saitama Prefecture Fuji Xerox Co., Ltd. Iwatsuki Works (72) Inventor Kosuke Sakaki 3-7-1, Fuuchi, Iwatsuki City, Saitama Prefecture Fuji Xerox Co., Ltd. Iwatsuki Works (56) Reference JP-A-5-136965 (JP, A) Kaihei 6-225042 (JP, A) JP-A-3-129950 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04N 1/32-1/36 H04N 1/42- 1/44

Claims (2)

(57) [Claims] 1. A storage unit for storing information of a partner station including a terminal capable of communicating based on a preset specific protocol; and a memory unit for storing information when a line is connected to the terminal of the partner station. Signal output means capable of outputting a signal instructing transition to the specific protocol based on the information being transmitted, and a response for detecting a response signal from the terminal of the partner station when connected to the terminal of the partner station A facsimile apparatus comprising: a detection unit; and a communication control unit that performs communication by selecting the specific protocol or a standard protocol based on the detection result of the response detection unit, wherein the response detection unit detects Based on the response signal, the memory of the storage means for the terminal of the partner station is rewritten and the information for the partner station is rewritten when the terminal of the partner station does not respond. Includes a storage updating means, communication is not established with the communication control means terminal of the counterpart station
The memory updated by the memory update means at
A facsimile apparatus, characterized in that re-communication with a terminal of a partner station is performed based on information of means . 2. The re-communication is updated by the storage update means.
Tried a certain number of times based on the information in the storage means before new communication
The fax machine according to claim 1, wherein the fax machine is performed after the operation .