JP2015195504A - Facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an external telephone set to clearly receive an incoming call in the case where the external telephone set is connected and there is the incoming call from an outside telephone set via a line, in facsimile equipment executing facsimile mode processing that is processing originally dedicated to facsimile.SOLUTION: When a calling signal is received, regardless of whether a modem part receives a calling tone signal (CNG signal), an ASIC as a control section instructs the modem to transmit a called station identification signal (CED signal) and a digital identification signal (DIS signal) to a calling side (S153). In the case where the modem part does not receive a digital instruction signal (DCS signal) that the calling side transmits after receiving the called station identification signal (S154: N), when an off-hook current is detected (S162), the ASIC instructs the modem part to stop the transmission of the CED signal and the DIS signal (S175).

Description

  The present invention relates to a facsimile apparatus that receives an image signal transmitted from a calling party via a line via a modem, and more particularly to a facsimile apparatus to which an external telephone can be connected.

  Conventionally, this type of facsimile apparatus has been proposed with a facsimile mode in which priority is given to facsimile reception and a telephone mode in which priority is given to telephone calls. In such a facsimile apparatus, it has also been proposed to automatically switch between the facsimile mode and the telephone mode based on the ratio of the number of facsimile reception times to the total number of incoming calls (for example, see Patent Document 1). .

JP-A-9-200377

  However, in the facsimile mode, when a call signal is received from the line, a call tone signal (CNG, which is an identification signal used to notify a facsimile transmission) is received from the caller prior to receiving the image signal. There is a form in which a called station identification signal (CED signal) and a digital identification signal (DIS signal) are transmitted to the calling party regardless of whether or not the signal is received. Such a facsimile mode may be set as an initial state in a facsimile machine not equipped with a handset, and the following problems arise when an external telephone is connected to such a facsimile machine.

  That is, when the facsimile mode as described above is set, when a facsimile apparatus receives a call signal when an incoming call is received from the outside, a CED signal (that is, an image signal by facsimile can be received) is received. ) And a DIS signal indicating the capability of the facsimile apparatus (information signal indicating that the facsimile apparatus can receive up to A3 size / color) is started. Then, if the transmission from the outside which is the calling side is a transmission from the facsimile apparatus, when the calling side receives the CED signal, it indicates in what format (for example, A3 / monochrome document) the data is transmitted. Send a digital command signal. However, even if the modem starts transmitting CED and DIS signals, if the caller does not receive the CED signal and DIS signal and transmits a digital command signal, it may be an incoming call from a telephone from the outside. There is sex. If the incoming call is from the outside telephone, if the facsimile mode is set, even if the external telephone is connected to the facsimile machine, it will receive a call from the outside telephone and make a call. I could not.

  Of course, the user may cancel the facsimile mode of the facsimile apparatus and change the setting to a mode in which both the external telephone and the facsimile are used. However, there are some users who do not notice the necessity of such setting change.

  Therefore, the present invention provides, for example, a facsimile apparatus that executes facsimile mode processing as described above, and when an external telephone is connected and an incoming call is received from an external telephone via a line, the incoming call is received by the external telephone. It was made for the purpose of being able to receive well.

  The facsimile apparatus of the present invention made to achieve the above object is capable of connecting a modem that can be connected to a line and an external telephone, and is connected to the modem via an energization path connected to the line. A telephone connection terminal; a control unit; and an off-hook detection unit provided on the energization path, wherein the off-hook detection unit is connected to the telephone connection terminal and the external telephone is connected to the telephone connection terminal. When the handset is off-hook, the current flowing on the energization path is detected, and when the modem receives a call signal from the line, the control unit receives a call signal from the caller prior to receiving an image signal. Regardless of whether the modem has received a calling tone signal for identifying whether it is telephone communication or facsimile communication, the called station identification signal and the digital identification signal are When the modem receives a digital command signal that is transmitted to the call side and that is transmitted after the call side receives the called station identification signal and the digital identification signal. A facsimile mode process for receiving an image signal from the calling side via the modem, wherein in the facsimile mode process, the control unit includes the modem, the calling side sets the called station identification signal, and When the off-hook detection unit detects the current when receiving the digital identification signal and not transmitting the digital command signal, the calling station identification signal and the digital identification signal are transmitted to the modem. It is characterized by instructing to stop.

  In the facsimile apparatus of the present invention configured as described above, when the control unit executes the facsimile mode process, whether or not the modem has received a call tone signal (CNG signal) when receiving a call signal from the line. Regardless, the called station identification signal (CED signal) and the digital identification signal (DIS signal) are transmitted to the calling party. Further, this facsimile mode process is a facsimile-specific process in which the control unit receives an image signal from the calling side via the modem after the modem receives a digital command signal (DCS signal).

  This facsimile mode process is originally a process dedicated to facsimile. However, if the modem does not receive a digital command signal, there is a possibility of an incoming call from the telephone. Therefore, when the off-hook detection unit detects the current flowing through the energization path when the handset of the external telephone is off-hooked, transmission of the called station identification signal and the digital identification signal is stopped. It is possible to prevent waste of electric power due to wasteful transmission of the called station identification signal and the digital identification signal. Therefore, even in the facsimile mode, when an external telephone is connected, the user can make a call by receiving an incoming call from an external telephone via the handset of the external telephone.

  In the present invention, a relay unit for switching whether or not the telephone connection terminal is connected to the line is further provided, and in the facsimile mode processing, the control unit controls the relay unit to control the telephone connection terminal. Is disconnected from the line, and the modem is instructed to transmit the called station identification signal and the digital identification signal, the modem calling the calling station identification signal and the When the digital command signal transmitted after receiving the digital identification signal is not received, the telephone connection terminal may be connected to the line by controlling the relay unit.

  In the facsimile mode processing, when a called station identification signal (CED signal) and a digital identification signal (DIS signal) are transmitted, control of a relay unit that disconnects the telephone line connection terminal from the line is performed. In the case of the control, if the telephone line connection terminal is not connected to the line, the user cannot receive an incoming call from an external telephone via the handset of the external telephone and can talk.

  However, in the present invention, when the modem does not receive the digital command signal, there is a possibility that the incoming call is from the telephone from the outside. Therefore, the relay unit for connecting the telephone line connection terminal to the line is controlled. Therefore, if the telephone line connection terminal is connected to a line, the user can receive a call from an external telephone through the handset of the external telephone and can talk.

  The present invention further includes a display unit that performs display and an operation unit that is operated, and when the off-hook detection unit detects the current, the control unit sets the setting of the control unit. A setting change guidance display process for displaying on the display section guidance prompting to change from a facsimile setting in which facsimile mode processing is executed to an external telephone use setting that uses both the external telephone and the modem; Further, in the setting change guide display process, the control unit may continue to display the guide on the display unit until an instruction to cancel the display of the guide is given by an operation of the operation unit.

  In that case, the user who saw the guidance changed from the facsimile setting in which the facsimile mode is executed to the external telephone use setting that uses both the telephone reception by the external telephone and the facsimile reception through the modem. It is possible to know that the user can make a call by receiving an incoming call from an external telephone. Moreover, since the guidance is displayed when the off-hook detection unit detects the current flowing through the energization path when the handset of the external telephone is off-hooked, the external telephone is connected and the setting needs to be changed. Displayed when an error occurs. The display of the guidance is continued until the user gives an instruction to operate the operation unit to cancel the display. Therefore, in this case, the user can make a call by receiving an incoming call from an external telephone through the handset of the external telephone.

  Further, when an instruction to cancel the display of the guidance is made by operating the operation unit, in the setting change guidance display process, the control unit is configured to perform the facsimile setting and the off-hook detection unit. Even when the current is detected, the guidance may not be displayed on the display unit. That is, when the user gives an instruction to cancel the display by operating the operation unit, the user may feel annoyed if the same guidance is displayed many times. Therefore, when the instruction to cancel is given, the guidance is not displayed on the display unit by not displaying the guidance on the display unit even if the facsimile setting is made and the off-hook detection unit detects the current. It can suppress that a user feels troublesome.

  In addition, when the guidance is displayed, the information processing apparatus further includes a processing unit that processes an image, and the control unit further executes instruction processing for instructing the processing unit to execute processing, In the setting change guidance display process, the control unit continues to display the guidance on the display unit even after execution of the instruction process when the guidance is displayed on the display unit before the instruction process is performed. May be.

  When the control unit executes instruction processing for instructing the processing unit to execute image processing, the guidance display may be erased. In this case, the guidance is displayed on the display unit before the instruction processing is performed. Is displayed, the guidance continues to be displayed even after the instruction process is executed. For this reason, the user can better know that changing to the external telephone use setting can more smoothly receive incoming calls from an external telephone and make a call.

  In addition, when the guidance is displayed, the control unit, as an initial state, performs the setting change guidance display processing when the facsimile setting is made and the setting is changed from the facsimile setting to another setting. In this case, the guidance may not be displayed on the display unit.

  When the setting is changed from the facsimile setting set as the initial state to another setting, it can be inferred that at least the user intended to change the setting. For this reason, if the display is made even after such an intention is inferred, the user may feel annoying, but in such a case, by not displaying the guidance on the display unit, it is possible to display the guidance. In contrast, the user can be prevented from feeling bothersome.

  Further, the facsimile apparatus of the present invention made to achieve the above object is capable of connecting a modem that can be connected to a line and an external telephone, and can be connected to the modem via an energization path connected to the line. A telephone connection terminal, a control unit, an off-hook detection unit provided on the energization path, a display unit that performs display, and an operation unit that is operated, and the off-hook detection unit includes the telephone connection When the external telephone is connected to a terminal and the handset of the external telephone is off-hook, a current flowing on the energization path is detected, and the control unit is a facsimile setting that prioritizes use of the modem When the off-hook detection unit detects the current, the setting of the control unit is changed from the facsimile setting to that of the external telephone and the modem. A setting change guide display process for displaying on the display unit a guide prompting the user to change to an external telephone use setting that uses one of the methods. In the setting change guide display process, the control unit The guidance may be continuously displayed on the display unit until an instruction to cancel the display is given by an operation of the operation unit.

  In the present invention configured as described above, the user who sees the guidance displayed on the display unit is set to use the external telephone using both the telephone reception by the external telephone and the facsimile reception via the modem. It is possible to know that the person who changed can receive a call from an external telephone more smoothly. In addition, since the guidance is displayed when the off-hook detection unit detects the current flowing through the energization path when the handset of the external telephone is off-hooked, the external telephone is connected and the setting needs to be changed. Displayed when it occurs. The display of the guidance is continued until the user gives an instruction to operate the operation unit to cancel the display. Therefore, in the present invention, it is possible to favorably prompt the user to change to the external telephone use setting, and after the setting change, the user can connect from an external telephone through the handset of the external telephone. Receive incoming calls and talk well.

1 is a block diagram illustrating a configuration of a multifunction machine to which the present invention is applied. 6 is a flowchart illustrating processing executed by the multifunction machine. It is a flowchart showing the FAX mode process in the said process in detail. It is a flowchart showing the guidance display process in the said process in detail. It is a flowchart showing the telephone connection process in the said process in detail. It is a flowchart showing the OK button press process in the said process in detail. It is explanatory drawing showing the display screen in the guidance display process. It is a flowchart showing the setting change process in the process in detail.

[Configuration of MFP]
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a multifunction machine (MFC) 1 as an example of a facsimile machine to which the present invention is applied. As shown in FIG. 1, the multi function device 1 has a plurality of functions such as a facsimile communication function, an external telephone relay function, a copy function, and a scanner function. As shown in FIG. A line-side jack 10 for connecting (an example of a line) and a telephone-side jack 20 for connecting an external telephone 52 are provided. Each of these jacks 10 and 20 is configured as a modular jack having the same shape, and is provided on the side surface of the multifunction device 1.

  The multifunction device 1 includes an ASIC 3 (an example of a control unit), a modem unit 4 (an example of a modem), a relay 5 (an example of a relay unit), an off-hook detection unit 6 (an example of an off-hook detection unit), and an image reading unit. 7 (an example of a processing unit), an image forming unit 8, and a display unit 9 (an example of an operation unit and a display unit).

  As shown in FIG. 1, the ASIC 3 has a CPU 3A, to which a ROM 3B and a RAM 3C are connected. The display unit 9 is provided on the surface of the housing of the multifunction machine 1 and performs various displays. The display unit 9 is configured as a touch panel in which a pressure sensitive element is superimposed on a liquid crystal display screen, and receives various operation inputs by a user. The image forming unit 8 records (prints) various images such as a facsimile received image received by the facsimile communication function and an image read by the image reading unit 7 on a recording medium such as printing paper. The image reading unit 7 reads an image of a document to be read in copying or facsimile transmission.

  A telephone line 51 can be connected to the line-side jack 10. By connecting the telephone line 51 to the line-side jack 10, the multifunction machine 1 and the exchange 53 are electrically connected, and various communications can be performed between them. Although not shown in FIG. 1, the connection between the telephone line 51 and the multifunction device 1 is actually made via a line cord having a modular plug at the end (the modular plug of the line cord is connected to the line side jack). 10).

  The telephone line 51 includes a first line L1 and a second line L2 for supplying a DC voltage (for example, 48V) for communication from the exchange 53 to a terminal device such as the multifunction machine 1. The line-side jack 10 of the multi-function device 1 includes a first line connection terminal 11 to which the first line L1 of the telephone line 51 is connected and a second line connection terminal 12 to which the second line L2 of the telephone line 51 is connected. I have. Each line connection terminal 11, 12 is connected to the modem unit 4. That is, the first line connection terminal 11 is connected to the modem unit 4 by the first connection line L11, and the second line connection terminal 12 is connected to the modem unit 4 by the second connection line L12. Although not shown in the figure, the modem unit 4 detects a line closing / opening circuit for closing / opening the telephone line 51, detection of various input signals such as a call signal, and various output signals to the telephone line 51. The module etc. which perform sending etc. of are provided.

  An external telephone 52 can be connected to the telephone-side jack 20. The telephone-side jack 20 includes a first telephone connection terminal 21 and a second telephone connection terminal 22 (both are examples of telephone connection terminals). These telephone connection terminals 21 and 22 are connected to each other inside the multi-function device 1. It is connected to the lines L11 and L12. That is, the first telephone connection terminal 21 is connected to the first connection line L11 via the first relay line L21, and the second telephone connection terminal 22 is connected to the second connection line L12 via the second relay line L22. Yes. That is, the line side jack 10 and the telephone side jack 20 are electrically connected. Therefore, the external telephone 52 can also communicate with the exchange 53 via the relay lines L21 and L22 (an example of the energization path).

  The relay 5 is provided on each of the relay lines L21 and L22, and conducts (turns on) and interrupts (off) each of the relay lines L21 and L22. That is, when the movable contacts 5A and 5B of the relay 5 are disposed at the position indicated by the symbol A in FIG. 1, the relay lines L21 and L22 are connected to the connection lines L11 and L12, respectively. On the other hand, when the movable contacts 5A and 5B are disposed at the position indicated by the symbol B in FIG. 1, the conduction between the relay lines L21 and L22 and the connection lines L11 and L12 is interrupted. The off-hook detection unit 6 has a current (hereinafter referred to as off-hook current) that flows through the trunk line L22 when the external telephone 52 is connected to the telephone-side jack 20 and the handset (not shown) of the external telephone 52 is off-hooked. (Also called).

  In addition to the detection signal of the off-hook detection unit 6, the ASIC 3 is input with a signal corresponding to the detection signal of the modem unit 4, the operation state of the display unit 9, and the image read by the image reading unit 7. Based on these signals, the ASIC 3 executes the following processing to control the operation of the modem unit 4, the relay 5, the image forming unit 8, and the display unit 9.

[Processing in MFP]
FIG. 2 is a flowchart showing a main routine of processing that is repeatedly executed by the CPU 3A of the ASIC 3 based on the program stored in the ROM 3B while the power of the multifunction device 1 is on.

  The multifunction device 1 of the present embodiment is in the following state at the time of shipment. The telephone line 51 is not connected to the line-side jack 10, and the external telephone 52 is not connected to the telephone-side jack 20. Further, the operation mode of the multifunction device 1 is set to the FAX mode. Furthermore, the movable contacts 5A and 5B of the relay 5 are disposed at a position indicated by a symbol A in FIG. 1 (hereinafter, the relay 5 is in the A position: the same applies to the B position). Further, a flag to be described later is set to off.

  As shown in FIG. 2, in this process, first, a setting change process (S10) and an OK button press process (S20) to be described later are executed in S10 and S20 (S represents a step: the same applies hereinafter).

  In S30, it is determined whether or not the modem unit 4 has received a call signal from the telephone line 51. If the modem unit 4 has not received a call signal (S30: N), the process proceeds to S40. In S40, it is determined whether or not the off-hook detection unit 6 detects an off-hook current. If the off-hook detection unit 6 has not detected an off-hook current (S40: N), the process proceeds to S50. In S50, it is determined whether or not the start of a telephone (TEL) or facsimile (FAX), that is, a call from the multifunction device 1 is instructed via the display unit 9 or the like.

  When a call from the multi-function device 1 is instructed (S50: Y), a call is instructed after a known transmission process to an external telephone or facsimile (an example of an instruction process) is performed in S60. If not (S50: N), the process proceeds to S10 described above. If it is determined in S40 that the off-hook detection unit 6 has detected an off-hook current (S40: Y), the process proceeds to S50 via S70.

  In S70, a guidance display process (an example of a setting change guidance display process) described later is executed. If there is no incoming call from an external telephone or an external facsimile machine (S30: N), the processes of S10 to S70 are repeated.

  When there is an incoming call from an external telephone or an incoming call from the external facsimile apparatus in the multi-function device 1 and a call signal is received via the modem unit 4 (S30: Y), the process proceeds to S80. In S80, it is determined whether or not the operation mode of the multifunction device 1 is the FAX mode. If it is not the FAX mode (S80: N), the process corresponding to the operation mode other than the FAX mode set at that time is executed in S90, and the process proceeds to S10 described above.

  However, the multi-function device 1 itself does not have a handset, and only when the external telephone 52 is connected to the telephone-side jack 20, a call with an external telephone can be made. For this reason, as described above, the operation mode of the multifunction device 1 is set to the FAX mode at the time of shipment. Therefore, if the setting has not been changed, an affirmative determination is made in S80, and the process proceeds to S100. In S100, ringing of a ringing tone is started using a ringing circuit (not shown). In continuing S110, it is judged whether the off-hook electric current was detected using the off-hook detection part 6, and when not detected (S110: N), a process transfers to S120. In S120, it is determined whether or not the ringing sound has reached a predetermined number of times. If not (S120: N), the process proceeds to S110 described above.

  Thus, when the off-hook detection unit 6 detects an off-hook current while the loop processing of S110 and S120 is executed (S110: Y), the process proceeds to S130, and a guidance display process similar to S70 described later is performed. Executed. In S140 following S130, a well-known manual process (Manual process) for switching whether to receive facsimile data or to make a call by the external telephone 52 is executed, and the process is temporarily ended.

  On the other hand, in the loop processing of S110 and S120, when a predetermined number of calls are made without detecting off-hook current (S110: N), the processing shifts to FAX mode processing of S150.

[FAX mode processing]
FIG. 3 is a flowchart showing the FAX mode process in detail. As shown in FIG. 3, in this FAX mode process, first, in S151, the relay 5 is switched from the A position to the B position. In the FAX mode process, when the relay 5 is switched to the B position, the first connection line L11 and the relay line L21 are not connected, and the second connection line L12 and the relay line L22 are not connected. Even if the handset of the external telephone 52 is off-hooked, the off-hook current detection unit 6 does not detect the off-hook current.

  This is because the FAX mode is a mode in which the modem unit 4 receives image data via the exchange 53 in the first place, and it is assumed that the external telephone 52 is not connected to the MFP 1. Is in the B position.

  Next, the line is closed in S152, and transmission of a CED signal (called station identification signal) and a DIS signal (digital identification signal) is started in S153. That is, in this FAX mode process, the multi function device 1 is concerned with whether or not the modem unit 4 has received a CNG signal, which is an identification signal used to notify the facsimile transmission from the calling side to the receiving side. First, the CED signal and the DIS signal are transmitted using the modem unit 4.

  In S154 following S153, the multifunction device 1 receives the DCS signal (digital command signal) transmitted after the calling facsimile apparatus receives the CED signal and the DIS signal within the predetermined time T0 (within about 10 seconds). It is determined whether or not. The DCS signal is a signal indicating in what format (for example, A3 / monochrome document) data is transmitted.

  When the DCS signal is received (S154: Y), after the transmission of the CED signal and the DIS signal is stopped in S155, after performing some well-known processing prior to the reception of the image signal in S156, Reception of a known image signal is started via the modem unit 4.

  In S157 following S156, it is determined whether the reception of the image signal is completed. If the reception has not ended (S157: N), the process is in a standby state by repeating S157, and when the reception ends (S157: Y), the process proceeds to S158. In S158, the line is released. In subsequent S159, the relay 5 is switched to the A position, and the process is temporarily ended.

On the other hand, when the DCS signal is not received within the predetermined time T0 (S154: N), the process proceeds to S161. In S161, the relay 5 is switched to the A position.
In the FAX mode, the relay 5 is located at the B position. When the multifunction device 1 does not receive the DCS signal within the predetermined time T0, it is conceivable that the reception of the DCS signal is delayed due to a defect in the telephone line 51, or the incoming call is from the outside telephone. Therefore, the relay 5 is switched from the B position to the A position, and the off-hook detection unit 6 is used to allow the CPU 3 to detect the current flowing through the relay line L22.

  In subsequent S162, CPU 3 determines whether or not an off-hook current is detected using off-hook detector 6. When the off-hook current is detected (S162: Y), the CPU 3 can determine that the external telephone 52 is connected regardless of the FAX mode.

  If the off-hook current is not detected (S162: N), the process proceeds to S163. In S163, it is determined whether or not a predetermined time T2 (about 25 seconds) has elapsed since the relay 5 was switched to the A position in S161. If the predetermined time T2 has not elapsed (S163: N), the process proceeds to S164. In S164, it is determined whether a DCS signal has been received. When the DCS signal is not received (S164: N), the process proceeds to S162 described above. In the loop processing including S162 to S164, it is determined whether or not an off-hook current is detected (S162) and whether or not a DCS signal is received (S164) before the predetermined time T2 elapses.

  When a DCS signal is received during this loop processing (S164: Y), since it is a FAX transmission from the outside to the multi function device 1, the CPU 3 switches the relay 5 to the B position again in S166. Then, the process proceeds to the process after S155 described above. That is, the multifunction device 1 receives image data transmitted from the outside to the multifunction device 1.

  If the predetermined time T2 elapses during the loop process consisting of S162 to S164 (S163: Y), the process proceeds to S167. In S167, the transmission of the CED signal and the DIS signal is stopped, and after the line is opened in S168, the process is temporarily ended. In other words, if the predetermined time T2 has elapsed during the loop processing consisting of S162 to S164 (S163: Y), timeout processing is executed.

  On the other hand, if an off-hook current is detected during the loop process consisting of S162 to S164 (S162: Y), a guidance display process (S170) similar to S70 is executed, and then the process proceeds to S171.

[Guidance display processing]
When the external phone 52 is connected to the multi-function device 1 even though the operation mode of the multi-function device 1 is the FAX mode, it is necessary to notify the user that the setting should be changed to an operation mode other than the FAX mode. There is.

  FIG. 4 is a flowchart showing the guidance display process in detail. As shown in FIG. 4, in this guidance display process, first, in S71, it is determined whether or not the flag is on. The flag will be described in the OK button pressing process described later. If the flag is off (S71: N), the process proceeds to S50 described above via S72. On the other hand, if the flag is on (S71: Y), the process proceeds to S50 as it is. In S72, a guidance display prompting the user to change the setting to an F / T mode (an example of setting for using an external telephone) using both the external telephone 52 and the modem unit 4 (that is, the facsimile function) (FIG. 7 ( A) reference) is performed on the display unit 9. By displaying this guidance display on the display unit 9, the user knows that the external telephone 52 should be set to the F / T mode or the like because the external telephone 52 is connected to the multifunction device 1.

  When the FAX mode is set, the external telephone 52 is connected to the telephone jack 20, and the off-hook current that flows when the handset of the external telephone 52 is off-hook is detected (S40: Y, S110: Y, S162: Y) and guidance display processing (S70, S130, S170) are executed.

  The guidance display displayed on the display unit 9 is displayed until an instruction for deleting the guidance display from the display unit 9 is issued from the CPU 3 in S22 of an OK button pressing process and S14 of a setting change process which will be described later.

  In S171, it is determined whether or not a DCS signal is received. If no DCS signal is received, the process proceeds to S172. In S172, it is determined whether or not a predetermined time T1 has elapsed since the detection of the off-hook current (S162: Y). If the predetermined time T1 (about 5 seconds) has not elapsed (S172: N), the process proceeds to S171 described above. If a DCS signal is received during the loop processing composed of S171 and S172 (S171: Y), the relay 5 is switched to the B position in S173, and then the processing proceeds to S155 described above.

  When the DCS signal is not received within the predetermined time T0 (S154: N), there is a high possibility of a telephone call from the outside, but the external DCS signal is delayed due to the malfunction of the telephone line 51. It is also possible that Therefore, when an off-hook current is detected (S162: Y), the CPU 3 is connected to the external telephone 52 in spite of being in the FAX mode, but it is a FAX transmission to the MFP 1 from the outside. There is a little possibility. Therefore, if an external DCS signal arrives within a predetermined time T1 (about 5 seconds) after the off-hook current is detected, the process proceeds from S171 to S173. Further, if the DCS signal from the outside does not reach the modem unit 4 within a predetermined time T1 (about 5 seconds) after the off-hook current is detected, the process proceeds to S175 assuming that the call is from the outside. .

  In S175, the transmission of the CED signal and the DIS signal is stopped, and the following telephone connection process is executed in S180. By this telephone connection process, even in the FAX mode, the user can make a call from the outside using the external telephone 52.

  FIG. 5 is a flowchart showing the telephone connection process in detail. As shown in FIG. 5, in this telephone connection process, first, in S181, it is determined whether or not an off-hook current is detected. If an off-hook current is detected (S181: Y), the process goes into a standby state by repeating S181. If no off-hook current is detected (S181: N), the process proceeds to S182. In S182, the modem unit 4 releases the connection with the exchange 53 to open the line, and the process executed by the multifunction machine of FIG. 2 and the FAX mode process of FIG. As long as the power of the multifunction device 1 is not turned off, the multifunction device 1 repeats the processing executed by the multifunction device of FIG. 2 again from the beginning, and executes the setting change processing in S10 and the OK button pressing processing in S20.

[OK button press processing]
A flowchart representing the OK button pressing process in detail will be described with reference to FIG. In this OK button pressing process, first, in S21, it is determined whether or not the OK button 9A displayed as follows is pressed. In the above-described guidance display processing S72 of FIG. 4, as shown in FIG. 7A, the F / T mode (external telephone use setting) using both the external telephone 52 and the modem unit 4 (ie, facsimile function) as shown in FIG. A guidance display prompting the user to change the setting is displayed on the display unit 9.

  In addition, the guidance display displays guidance for prompting the setting change, an OK button 9A that is pressed when the user approves the guidance, and a close button 9B for closing the guidance. When the close button 9B is pressed, a menu screen for selecting a facsimile, copy, or scan function is displayed on the display unit 9 as shown in FIG. . This screen displays a function selection button 9C for selecting various functions and a detail button 9D for instructing detailed operation display when the external telephone 52 is connected to the product. When the detail button 9D is pressed, the above-described screen of FIG. 7A is displayed on the display unit 9 by processing of another routine (not shown).

  When the OK button 9A on the screen of FIG. 7A is pressed, an affirmative determination is made in S21 (FIG. 6), and the process proceeds to S22 of FIG. In S22, the guidance display shown in FIG. In subsequent S23, the flag is set to ON, and the process proceeds to the above-described S30 (FIG. 2).

  If the determination in step S21 is affirmative, that is, if the user presses the OK button 9A with the display unit 9 configured as a touch panel, the user once confirms that the setting needs to be changed when the telephone is connected. After that, the OK button 9A is pressed.

  It is not always necessary to display the guidance display on the display unit 9 many times. The user may confirm the guidance display once. Therefore, in S23 of FIG. 6, when a positive determination is made in the process of S21, the flag is set to ON (S23). Then, in the guidance display processing (S70, S130, S170), the flag is turned on (S71: Y) because the user presses the OK button 9A and confirms that setting change is necessary when the telephone is connected. Applicable if

[Setting change processing]
Next, the setting change process of S10 will be described using the flowchart of FIG. In this process, it is determined whether or not the operation mode has been changed to a setting other than the FAX mode (S11). In the initial setting, the FAX mode is set, and when the user changes from the FAX mode to the F / T mode, for example, the user understands that the setting needs to be changed when the telephone is connected. The flag is set to ON (S12).

  In subsequent S13, it is determined whether or not the guidance shown in FIG. If the guidance is displayed (S13: Y), after the guidance display is erased from the display unit 9 in S14, if the guidance is not displayed (S13: N), the CPU 3 changes the setting. The process ends.

  When the operation mode is changed to a setting other than the FAX mode (S11: Y), it is not necessary to continuously display the guidance display of FIG. Therefore, when the operation mode is changed to a setting other than the FAX mode (S11: Y), when the guidance of FIG. 7A is displayed on the display unit 9 (S13: Y), in S14 The guidance display is deleted from the display unit 9. Conversely, if the operation mode has not been changed to a setting other than the FAX mode (S11: N), since the external telephone 52 is connected to the multi-function device 1 in spite of the FAX mode, the display is displayed. It is necessary to continue displaying the guidance display of FIG. 6A is deleted when the OK button 9A in FIG. 6 is pressed (S21: Y) or when the setting is changed to a setting other than the FAX mode in FIG. 8 (S11: N).

[MFP effect]
As described above, in the MFP 1 according to the present embodiment, when the FAX mode process (S150) is started, the modem unit 4 transmits the CED signal to the calling side regardless of whether the CNG signal is received. (S153). This FAX mode process is originally a process dedicated to facsimile. However, if the modem unit 4 does not receive the DCS signal within the predetermined time T0 (S154: N), there is a possibility that the incoming call is from the telephone from the outside. Therefore, in this case, an off-hook current is detected (S162: Y), and if the DCS signal is not received before the predetermined time T1 elapses (S171: N, S172: Y), the transmission of the CED signal and the DIS signal is stopped. (S175). For this reason, even if the FAX mode in which the FAX mode processing of S150 is executed is set as the operation mode (S80; Y), when the external telephone 52 is connected, the user can connect the external telephone 52. The user can receive a call from an external telephone through the handset (S180).

  That is, when the FAX mode is set as the operation mode (S80: Y), the user must take the handset of the external telephone 52 before the ringing sound is made a predetermined number of times (for example, 4 times) (S120: Y). ), FAX mode processing (S150) is executed. This FAX mode process is originally a process exclusively for facsimile, and there is a form in which the conventional machine does not accept the off-hook of the handset of the external telephone 52 at all. On the other hand, in this embodiment, even if the FAX mode is set as the operation mode, the user can receive an incoming call from an external telephone through the handset of the external telephone 52, and the user can You can talk even if you don't realize the need to change settings.

  In the FAX mode processing in this embodiment, when the CED signal and the DIS signal are transmitted (S153), the control for switching the relay 5 to the B position (S151) is performed in advance. When the relay 5 is maintained at the B position by the control, the external telephone 52 is kept disconnected from the telephone line 51 and the user receives an incoming call from an external telephone via the handset of the external telephone 52. I cannot receive a call. Therefore, in the FAX mode processing in this embodiment, if the DCS signal is not received within the predetermined time T0 (S154: N), there is a possibility that the incoming call is from the telephone from the outside, so the relay 5 is switched to the A position. (S161). If the relay 5 is maintained at the A position, after the CED signal and the DIS signal are stopped, the user can receive a call from an external telephone through the handset of the external telephone 52 and make a call ( S180).

  Further, in the multifunction device 1 of the present embodiment, when the external telephone 52 is connected to the telephone side jack 20 and an off-hook current that flows when the handset of the external telephone 52 is off-hooked is detected (S40). : Y, S110: Y, S162: Y), guidance display processing (S70, S130, S170) is executed. In this guidance display processing, a guidance display that prompts the user to change the setting by operating the display unit 9 in the F / T mode or the like that uses both the external telephone 52 and the modem unit 4 (that is, the facsimile function) It is displayed on the display unit 9 (S72). For this reason, the user can know that it is more appropriate to change the setting to the F / T mode or the like when receiving a call from an external telephone and making a call.

  In addition, since the guidance display is made when the handset of the external telephone 52 is off-hooked, it is displayed when the external telephone 52 is connected and the setting needs to be changed. The guidance display is repeatedly executed until the user depresses the OK button 9A to cancel the display (S21: Y) or the user changes the setting (S11: Y) (S71). : N). Further, the guidance display may be erased at the time of facsimile transmission or the like (S60), but in this embodiment, when the guidance display is made before execution of such processing, facsimile transmission or the like is performed. The guide continues to be displayed even after the process. For this reason, the user can know better that the setting change to the F / T mode or the like can receive a call from an external telephone more smoothly and can make a call.

  Conversely, in the present embodiment, when the user presses the OK button 9A to cancel the display (S21: Y) or the user changes the setting (S11: Y), the off-hook current is detected. Even if this is done, the guidance display is not executed (S71: Y). For this reason, it can suppress that a user feels troublesome with respect to the display of guidance. That is, when the OK button 9A is pressed, it is suggested that the user has accepted the guidance, and when the setting is changed, it is suggested that the user intended to change the setting. Therefore, in such a case, it is possible to prevent the user from feeling troublesome with respect to the guidance display by preventing the guidance display from being executed.

  In addition, this invention is not limited to the said embodiment at all, It can implement with a various form in the range which does not deviate from the summary of this invention. For example, various forms can be considered as to when the guidance display is canceled. That is, even after the OK button 9A or the like is operated, the guidance display may be performed every time the off-hook current is detected, or the guidance display may be performed only once when the off-hook current is first detected. Such guidance display may not be made at all from the beginning. Either one of the flag-on processes in S12 or S23 may be omitted.

DESCRIPTION OF SYMBOLS 1 ... MFP 3 ... ASIC 4 ... Modem part 5 ... Relay 6 ... Off-hook detection part 7 ... Image reading part 8 ... Image formation part 9 ... Display part 9A ... OK button 9B ... Close button 9C ... Function selection button 9D ... Detail button DESCRIPTION OF SYMBOLS 10 ... Line side jack 20 ... Telephone side jack 51 ... Telephone line 52 ... External telephone 53 ... Switch

Claims (7)

A modem that can be connected to the line;
An external telephone can be connected, and a telephone connection terminal connected to the modem via an energization path connected to the line;
A control unit;
An off-hook detector provided on the energization path;
With
The off-hook detection unit detects a current flowing on the energization path when the external telephone is connected to the telephone connection terminal and the external telephone handset is off-hook,
The controller is
When the modem receives a call signal from the line, the modem receives a call tone signal for identifying whether the call is a telephone communication or a facsimile communication from the caller prior to receiving the image signal. Instructing the modem to transmit a called station identification signal and a digital identification signal to the calling party, regardless of whether or not
And,
When the modem receives a digital command signal to be transmitted after the calling side receives the called station identification signal and the digital identification signal, it receives an image signal from the calling side via the modem. Facsimile mode processing is executed,
In the facsimile mode process,
The control unit detects the current when the modem detects the current when the calling party receives the called station identification signal and the digital identification signal but does not receive a digital command signal. The facsimile apparatus characterized by instructing the modem to stop transmitting the called station identification signal and the digital identification signal. A relay unit for switching whether to connect the telephone connection terminal to the line;
In addition,
In the facsimile mode process,
The control unit instructs the modem to transmit the called station identification signal and the digital identification signal after controlling the relay unit to disconnect the telephone connection terminal from the line. The modem controls the relay unit to connect the telephone connection terminal to the line when the caller does not receive a digital command signal transmitted after receiving the called station identification signal and the digital identification signal. The facsimile apparatus according to claim 1, wherein the facsimile apparatus is connected. The facsimile apparatus according to claim 1 or 2,
A display unit for displaying, and
An operation unit to be operated;
Further comprising
The controller is
When the off-hook detection unit detects the current, the setting of the control unit is changed from a facsimile setting for executing the facsimile mode processing to an external telephone use setting for using both the external telephone and the modem. Further executing a setting change guide display process for causing the display unit to display a guide prompting the user to
In the setting change guidance display process,
The facsimile apparatus, wherein the control unit continues to display the guidance on the display unit until an instruction to cancel the display of the guidance is given by an operation of the operation unit. The facsimile apparatus according to claim 3,
When an instruction to cancel the display of the guidance is made by operating the operation unit, in the setting change guidance display process, the control unit is configured to perform the facsimile setting, and the off-hook detection unit is configured to output the current. The facsimile apparatus, wherein even if detected, the guidance is not displayed on the display unit. The facsimile apparatus according to claim 3,
Furthermore,
A processing unit for processing images,
Have
The controller is
Instruction processing for instructing the processing unit to execute processing,
Perform further,
In the setting change guidance display process,
The control unit continues to display the guidance on the display unit even after the instruction process is executed when the guide is displayed on the display unit before the instruction process is executed. . The facsimile apparatus according to claim 3,
The controller is
In the initial state, when the facsimile setting is made and the setting is changed from the facsimile setting to another setting, the guidance is not displayed on the display unit in the setting change guidance display processing. apparatus. A modem that can be connected to the line;
An external telephone can be connected, and a telephone connection terminal connected to the modem via an energization path connected to the line;
A control unit;
An off-hook detector provided on the energization path;
A display unit for displaying, and
An operation unit to be operated;
With
The off-hook detection unit detects a current flowing on the energization path when the external telephone is connected to the telephone connection terminal and the external telephone handset is off-hook,
The controller is
When the facsimile setting that gives priority to the use of the modem is made, when the off-hook detection unit detects the current, the setting of the control unit is changed from the facsimile setting to both the external telephone and the modem. Executing a setting change guidance display process for causing the display unit to display guidance prompting the user to change to the external telephone use setting to be used;
In the setting change guidance display process,
The facsimile apparatus, wherein the control unit continues to display the guidance on the display unit until an instruction to cancel the display of the guidance is given by an operation of the operation unit.

Images