JP5131214B2 - Facsimile machine - Google Patents

Description

  The present invention relates to a facsimile machine.

  2. Description of the Related Art A configuration is known in which a facsimile apparatus has a multi-handset function that accommodates a plurality of lines and can make a call by calling from each line using a telephone.

  As a configuration for realizing such a multi-handset function, for example, a telephone (TEL) terminal is provided on the primary side of each facsimile (FAX) board that accommodates a line, a telephone is connected, and the telephone connected to the line to be called One phone can be configured by connecting a voice codec on the secondary side of each FAX board and connecting to the telephone via a switch for switching each VoiceCODEC on each FAX board. A second configuration is possible in which a call is received via VoiceCODEC using a line accommodated for any FAX board.

  Furthermore, in the first configuration, a telephone is required for each line, and in the second configuration, Voice CODEC is necessary, which increases the cost. A telephone is connected by providing a TEL terminal, and the primary side of each of the first and second FAX boards is selectively between the TEL terminal in the first FAX board and the line accommodated in the own FAX board. A third configuration is also conceivable in which a changeover switch that can be connected to each other is provided.

  As a telephone communication system in this type of conventional apparatus, the following Patent Document 1 discloses a configuration in which a handset is connected to a secondary side and a modem and a handset are switched in a facsimile apparatus having a DAA (Data Access Arrangement). ing.

Patent Document 2 below discloses a technique for recognizing a dial pulse by comparing a line voltage with a preset threshold value.
JP 2004-104557 A JP-A-3-285442

  SUMMARY OF THE INVENTION An object of the present invention is to provide a facsimile apparatus that uses one telephone and can make a call from any of a plurality of accommodated lines having different line types regardless of the dial type of the telephone.

  In order to achieve the above object, the invention of the facsimile apparatus according to claim 1 is characterized in that a network control device is provided on the primary side that accommodates the line, and a modem device is provided on the secondary side that is electrically separated from the primary side. A plurality of image transmission control boards provided, one of the boards having a main control board containing a telephone, and the other board being mounted as a sub-control board, and a network interface unit, The control board is provided on the primary side, the power supply means provided on the secondary side and the dial detection means or switching means for switching the connection between the accommodated lines, and the telephone so that the telephone is connected to the secondary side. The switching means is switched, the dial detection means detects the dial number inputted by the call operation of the telephone operated by the internal power supply from the power supply means, and the dial detection means Based on the issued dial number, call control means for performing call control for the accommodation line via the modem and the network control device, and when calling by a line other than the accommodation line of the main control board, Notification means for notifying the slave control board accommodating the line of a call instruction based on the dial number detected by the dial detection means, and the slave control board is notified from the notification means. Subordinate control board call control means for performing call control within the slave control board for the accommodation line via the modem and the network control apparatus based on the dial number included in the call instruction is provided.

  The invention according to claim 2 is the invention according to claim 1, wherein the switching means is a wide gap relay having a switching contact structure in which a separation distance for electrically separating the primary side and the secondary side is secured. Is done.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the dial detection means includes a dial tone signal [DTMF (Dual Tone Multiple Frequency) transmitted from the push button type telephone by the call operation. Including a DTMF receiver.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the dial detection means is a continuous continuation of an off-hook signal by a dial pulse transmitted by the dial pulse type telephone by the call operation. Hook detection means for detecting blockage is included.

  According to a fifth aspect of the invention, there is provided the line selection means for selecting an arbitrary line designated by the user from the respective lines accommodated on the respective boards in the invention according to any one of the first to fourth aspects. The call control means gives the call instruction when the line selected by the line selection means is an accommodation line of its own board, and the notification means determines whether the line selected by the line selection means When the line is accommodated in any other slave control board, the calling instruction is notified to the slave control board.

  The invention according to claim 6 is the invention according to any one of claims 1 to 4, further comprising an idle line detecting means for detecting an idle line among the lines accommodated on the respective boards, The control means issues the call instruction when the free line detected by the free line detection means is an accommodation line of its own board, and the notifying means determines that the line detected by the free line detection means is another When the line is accommodated in any of the slave control boards, the calling instruction is notified to the slave control board.

  According to the invention of the facsimile apparatus of the first aspect, since the call types by the modem and the network control apparatus are already matched to the respective connection lines for each board, the Voice Control is not provided on the main control board. One connected telephone can be used to make a call from any of a plurality of accommodated lines with different line types, regardless of whether the telephone is a dial / pulse system or a push button system.

  According to the second aspect of the present invention, in the first aspect of the invention, the primary side and the secondary side can be electrically separated completely, and a dial input can be received on the primary side to make a call from the secondary side.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a call can be made by calling from any of a plurality of accommodated lines using a push button telephone.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, a call can be made by calling from any of a plurality of accommodated lines using a dial pulse type telephone.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the user can make a call by selecting an arbitrary line desired by the user.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to fourth aspects, a user can make a call over an empty line simply by lifting a telephone handset and inputting a dial.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing a functional configuration of a facsimile machine 10 according to the present invention.

  As shown in FIG. 1, a facsimile apparatus 10 stores a central processing unit (CPU) 11 that performs control processing of the entire apparatus, a work area used by a control program (system data for controlling the operation of the apparatus, and various information). RAM (Random Access Memory) 12, system control unit 13 having a program (ROM (Read-Only Memory)) for controlling the entire facsimile, a touch panel, etc. An operation / display unit 14 for performing an operation (calling operation, etc.), displaying various information, a reading unit 15 for reading a transmission original or a copy original, and recording received image data or read image data on a recording sheet Output the recording unit 16, received image data or read image data A network interface (NW I / F) unit including an image storage unit 17 to be stored, an image processing unit 18 that performs processing such as encoding, decoding, enlargement, and reduction for image data, a transmission control unit 19 and a network control unit 20 21. The system bus 22 is configured to exchange data between the above-described functional units.

  In this facsimile apparatus 10, the NW I / F unit 21 includes a plurality of telephone lines (hereinafter referred to as lines) in a public line network [(for example, analog public line network (PSTN) or digital public line network (ISDN)) 50. And one telephone 40 is connected, and interface functions (transmission control and network control) related to facsimile communication with each line, and the telephone 40 is operated as a multi-handset using each line. Interface functions (call control, line connection control).

  Specifically, as described below, the NW I / F unit 21 is mounted with a circuit corresponding to the transmission control unit 19 and a circuit corresponding to the network control unit 20 as a semiconductor integrated circuit for each of the lines. This is realized by a plurality of facsimile control boards (hereinafter abbreviated as FAX boards).

  FIG. 2 is a diagram showing a schematic configuration of the NW I / F unit 21 in the facsimile apparatus 10 of the present invention.

  As shown in FIG. 2, the NW I / F unit 21 includes a primary side circuit having DAA (Direct Access Arrangement) 304 (304a, 304b,..., 304n) connected to lines 1, 2,. The primary side circuit is isolated, and a MODEM (Modulator-DEModulator) 305 (305a, 305b,..., 305n), and a central processing unit (CPU) 306 (306a, 306b). ,..., 306n) and n FAX boards 30 (30a, 30b,..., 30n) each including a secondary circuit.

  In each FAX board 30, the DAA 304 is a semiconductor integrated circuit corresponding to the network control unit 20, and performs establishment of a call with the public line network 50 and control of network connection through each line accommodated (connected). .

  The MODEM 305 converts the digital data into an audio signal and sends it to the line, and performs data modulation / demodulation processing for converting the audio signal received through the line into digital data.

  The CPU 306 controls the operation of all the components in the FAX board 30 such as MODEM 305 and DAA 304.

  As one of the control functions of the CPU 306, the above-mentioned network connection control is executed by the DAA 304 in the corresponding FAX board 30 based on the call operation on the operation / display unit 14 by the user, and the other party connected by the network connection control There is a FAX transmission control function (corresponding to the transmission control unit 19 described above) that executes FAX protocol procedures such as G3 and G4 via the MODEM 305 with the terminal.

  In the present invention, the CPU 306 has a call control function related to a multi-handset function that allows the telephone 40 to operate as a multi-channel handset by selectively using a plurality of lines accommodated in the NW I / F unit 21. In addition.

  In order to realize this call control function, each FAX board 30 includes the DAA 304, MODEM 305, and the like described above, and the line to be accommodated in the FAX board 30 or across the other FAX boards 30 to the telephone 40. Functional elements (not disclosed in FIG. 2) for multi-handset calls such as a switching mechanism for switching connection (corresponding to a wide gap relay 311 described later) and the like are further provided.

  A specific circuit configuration of the NW I / F unit 21 including the functional elements for the multi-handset call will be described with reference to FIG.

  FIG. 3 particularly shows a configuration example of the NW I / F unit 21B that accommodates the lines 1 and 2 and enables the telephone 40 to be used as a multi-handset corresponding to these two lines [2 channels (CH)]. .

  In this example, the NW I / F section 21B (corresponding to the network interface section in the claims) is a FAX board for the channel 1 (CH1) that accommodates the line 1, as shown in FIG. (Corresponding to the control board) 30a and a FAX board (corresponding to the sub-control board in the claims) 30b for channel 2 (CH2) accommodating the line 2.

  The FAX board 30a is connected to the telephone 40 in addition to the DAA (corresponding to the network control device in the claims) 304a, MODEM (corresponding to the modem device in the claims) 305a and the CPU 306a having the above-described functional configurations. A telephone connection terminal (TEL terminal) 301 for connecting, a line connection terminal (LINE1 terminal) 302a for connecting the line 1, an extension line connection terminal 303a for connecting an extension line for telephone connection to the FAX board 30b, and the TEL terminal 301. Contacts S11 and S11 connected to the telephone 40, and a wide gap relay 311 (corresponding to the switching means in the claims) capable of selectively switching between the contacts S12 and S12 or the contacts S13 and S13, and a contact of the wide gap relay 311 Contacts S21 and S21 connected to S13 and S13, and extension line connection Between the contacts S22, S22 connected to the lead wire connected to the child 303a or the contacts S23, S23 connected to the line 1 can be selectively switched, and between the contacts S11, S11 of the TEL terminal 301 and the wide gap relay 311a. Connected to the telephone connection path of the telephone 40 and connected to the hook detector 313 for detecting the on-hook state and the off-hook state of the telephone 40 and the contacts S12 and S12 of the wide gap relay 311a. The wide gap relay 311a connects the telephone 40 to the secondary side. A power feeding unit (equivalent to power feeding means in claims) 314 that feeds, for example, a positive (+) voltage of 24 volts (V) to the telephone 40 when switched to the circuit, the power feeding unit 314 and a capacitor 315 inserted in a line between a dial detection unit 316 described later, a wide gap relay 3 A dial detector for detecting an input dial number based on a call operation by a user at the telephone 40 when the wide gap relay 311a is connected to the secondary side circuit by the wide gap relay 311a. (Equivalent to dial detection means in claims) 316, a dial storage unit 317 for storing an input dial number detected by the dial detection unit 316 is provided.

  In the wide gap relay 311a, the contacts S11 and S11, the contacts S12 and S12, and the contacts S13 and S13 are sufficiently long to electrically separate (separate) the primary side and the secondary side of the FAX board 30a completely. It has a contact structure that ensures a distance (wide gap).

  The relay 312 may also be configured with a wide gap relay having a contact structure equivalent to that of the wide gap relay 311a.

  The dial detection unit 316 and the dial storage unit 317 are provided on the secondary side, and are electrically insulated from the one side by the wide gap relay 311.

  The dial detection unit 316 includes a DTMF receiver that receives a dial tone signal [DTMF (Dual Tone Multiple Frequency)] sent by a push button (PB) type telephone by a call operation.

  The dial detection unit 316 includes hook detection means for detecting continuous interruption of an off-hook signal due to a dial pulse transmitted by a dial pulse (DP) telephone by a call operation.

  In the present embodiment, a hook detector 313 is used as the hook detecting means, and is realized by, for example, a photocoupler or a current sensor.

  In the dial detector 316 having such a configuration, when the telephone 40 is a PB type telephone, the dial number is detected by the DTMF receiver from the dial tone signal transmitted from the telephone 40, and the telephone 40 is a DP type telephone. In the case of a telephone, the dial number is detected from the DP signal sent from the telephone 40 by the photocoupler or current sensor via the hook detector 313.

  The CPU 306a has a function of switching and controlling the wide gap relay 311a and the relay 312. When the wide gap relay 311a is switched and controlled so that the telephone 40 is connected to the secondary circuit, the CPU 306a dials based on the calling operation by the telephone 40. Based on the dial number detected by the detection unit 316 and stored in the dial storage unit 317, the modem 306a in the secondary circuit is instructed to make a call based on the dial number, and via the MODEM 306a and the DAA 304a in the primary circuit A call control function (corresponding to call control means in the claims) for controlling a call to the line 1 connected to the LINE1 terminal 302a, and a counterpart terminal device by a call to the line 1 by the call control function When the incoming call is answered, the wide gap relay 311a and the relay 3 Control function for switching 2 to connect telephone 40 to line 1, when line 1 is unusable (busy, etc.) and line 2 is free (when calling is made via a line other than the accommodation line on the main control board) The call instruction based on the dial number stored in the dial storage unit 317 is notified to the CPU 306b of the FAX board 30b that accommodates the line 2 (the CPU 306a and the CPU 306b are connected by a line for performing the notification. A calling instruction notification function (corresponding to the notification means in the claims).

  In addition to the DAA 304b, MODEM 305b, and CPU 306b having the above-described functional configurations, the FAX board 30b is connected to a line connection terminal (LINE2 terminal) 302b for connecting the line 2 and an extension line for connecting a telephone from the FAX board 30a. Extension line connection terminal 303b, contacts S31 and S31 connected to line 2 and contacts S32 and S32 connected to extension line connection terminal 303b or wide gap relay 311b capable of selectively switching between contacts S33 and S33 are provided. .

  As with the wide gap relay 311a on the FAX board 30a, the wide gap relay 311b has the contacts S31, S31, the contacts S32, S32, and the contacts S33, S33 electrically completely on the primary side and the secondary side of the FAX board 30b. It has a contact structure in which a sufficiently long separation distance (wide gap) is secured.

  The CPU 306b receives the dial number and the call instruction notification by the function for switching and controlling the wide gap relay 311b, the call instruction notification function in the CPU 306a of the FAX board 30a, and the secondary side based on the notified dial number. A call control function for instructing a call based on the dial number to the MODEM 306b in the circuit and controlling a call to the line 2 connected to the LINE2 terminal 302b via the MODEM 306b and the DAA 304b in the primary circuit (patented) The sub-control board call control means in the claims).

  Next, the multi-handset call operation of the facsimile apparatus 10 according to the present invention that implements the NW I / F 21B (see FIG. 3) will be described in detail with reference to FIGS.

  FIG. 4 is a flowchart showing the call control operation on the CH1-compatible FAX board 30a (CPU 306a) in the multi-handset call operation.

  FIG. 5 is a flowchart showing the call control operation on the CH2-compatible FAX board 30b (CPU 306b) in the multi-handset call operation.

  FIG. 6 is an operation explanatory diagram showing the flow of each process according to the flowcharts of FIGS. 4 and 5 using the circuit configuration of the CH1 compatible FAX board 30a (CPU 306a) and the CH2 compatible FAX board 30b (CPU 306b). .

  In FIG. 6, processing steps corresponding to the processing steps in the flowcharts of FIGS. 4 and 5 are denoted by the same step symbols.

  When performing the call control operation shown in FIGS. 4 and 5, in the facsimile apparatus 10, the CPU 306a sets the wide gap relay 311a to the telephone 40 in FIG. Switching control is performed in a state indicated by a solid line [a state in which the telephone 40 is connected to the secondary side (a state in which the contacts S11 and S11 and the contacts S12 and S12 are connected)].

  In the following description, it is assumed that the switching control for connecting the wide gap relay 311a to the secondary side of the telephone 40 is performed during standby, but the present invention is not limited to this. (Excluding) may be performed.

  Due to the switching control of the wide gap relay 311a, a voltage of + 24V is supplied from the power supply unit 314 to the telephone set 40 in the FAX board 30a, and the telephone set 40 can perform operations such as a call operation by receiving the power supply.

  In the standby state, the facsimile machine 10 (the CPU 306a of the FAX board 30a) monitors whether or not a hook switch (not shown) of the telephone 40 has been hooked off as shown in FIG. 4 (step S101).

  When the user picks up the handset of the telephone 40 and the hook detector 313 detects that the telephone 40 is off-hooked (YES in step S101), the CPU 306a displays the line 1 accommodated in the FAX board 30a and the FAX. It is checked whether one or both of the lines 2 accommodated in the board 30b are vacant (step S102).

  Here, when both the line 1 and the line 2 are not vacant (NO in step S102), the CPU 306a sends a pseudo busy tone to the telephone 40 (step S131), and the user stops calling (YES in step S132). Wait and return to the standby state.

  On the other hand, when one or both of the line 1 and the line 2 are vacant (YES in step S102), the CPU 306a sends a pseudo dial tone to the telephone 40 (step S103), and accepts dial input from the telephone 40. Transition to processing.

  Here, when the user operates the telephone 40 to input a series of telephone numbers (dial numbers) of the counterpart terminal apparatus, the input series of telephone numbers is sent to the dial detection unit 316 via the wide gap relay 311a. .

  The dial detection unit 316 receives the dial number transmitted from the telephone 40, detects the dial number (steps S104 and S105), and stores the detected dial number in the dial storage unit 317 (step S106).

  When the series of telephone numbers detected by the dial detection unit 316 in step S105 has been stored in the dial storage unit 317 (step S106), the CPU 306a then determines that the line recognized as an empty line in step S102 is the line 1. It is checked whether or not there is (step S107).

  If it is determined that the free line is line 1 (YES in step S107), the CPU 306a makes a call to the MODEM 305a in the FAX board 30a based on the dial number stored in the dial storage unit 317. (Step S108), and control is performed to make a call to the line 1 connected to the LINE1 terminal 302a via the MODEM 305a and the DAA 304a in the FAX board 30a (step S109).

  When the partner terminal apparatus responds to the call in step S109, the CPU 306a causes the wide gap relay 311a to be in a state indicated by a dotted line in FIG. 3 [a state in which the telephone 40 is connected to the relay 312 (contacts S11, S11). And the contacts S13 and S13 are connected to each other)], and the relay 312 is switched to the state indicated by the solid line in FIG. 3 (the state where the contacts S21 and S21 and the contacts S23 and S23 are connected). As a result, the telephone set 40 connected to the TEL terminal 301 is connected to the line 1 via the wide gap relay 311a and the relay 312 (at a position closer to the LINE1 terminal than the DAA 304a) (step S110).

  Thereafter, the telephone 40 operates by receiving power from the line 1, and the user can make a call with the partner terminal device connected via the line 1 by the telephone 40 (step S201).

  During this time, the CPU 306a monitors whether or not the call on the line 1 is terminated from the hook state of the telephone set 40 detected by the hook detector 313 (step S111), and the call on the line 1 is terminated by detecting the on-hook of the telephone set 40. Is detected (YES in step S111), the standby state is restored.

  On the other hand, if it is determined in step S107 that the vacant line is not line 1 (NO in step S107), the CPU 306a sends the dial number stored in the dial storage unit 317 to the CPU 306b in the FAX board 30b. And a call instruction is notified (step S121).

  Further, when notifying the dial number and the calling instruction, the CPU 306a controls to switch both the wide gap relay 311a and the relay 312 to the state indicated by the dotted line in FIG. 3 (step S122).

  After that, the communication with the partner terminal device via the line 2 using the telephone 40 by the control of the CPU 306B on the FAX board 30b side which received the notification of the calling instruction in the step S121 (described in detail later with reference to FIG. 5). Is performed (step S211).

  During this time, the CPU 306a monitors whether or not the call on the line 2 has ended from the hook state of the telephone 40 (step S123), and if it is detected that the telephone call 40 has ended by detecting the on-hook of the telephone 40 (YES in step S123). Return to standby state.

  On the other hand, the CPU 306b of the FAX board 30b performs call control as shown in FIG. 5 based on the call instruction from the CPU 306 of the FAX board 30a in step S121.

  In FIG. 5, the CPU 306b of the FAX board 30b monitors whether or not a call instruction instruction including the dial number stored in the dial storage unit 317 is received from the CPU 306a of the FAX board 30a by the process of step S121 of FIG. (Step S141).

  Here, when there is a call instruction instruction including a dial number from the CPU 306a of the FAX board 30a (YES in step S141), the CPU 306b temporarily holds the notified dial number and then executes the notification based on the held dial number. Instruct to make a call to the MODEM 305b in the FAX board 30b (step S142), and make a call to the line 2 connected to the LINE2 terminal 302b through the MODEM 305b and the DAA 304b in the FAX board 30b. Control is performed (step S143).

  When the counterpart terminal apparatus responds to the call in step S143, the CPU 306b displays the wide gap relay 311b in a state indicated by a solid line in FIG. 3 (a state where the contacts S31 and S31 and the contacts S32 and S32 are connected). )].

  By the switching control of the wide gap relay 311b and the switching control of the wide gap relay 311a and the relay 312 performed in step S122 of FIG. 4 by the CPU 30a in the FAX board 30a, it is connected to the TEL terminal 301 in the FAX board 30a. The telephone 40 includes a wide gap relay 311a, a relay 312, a lead line to the extension line terminal 303a, an extension line from the extension line terminal 303a to the extension line terminal 303b, an extension line terminal 303b in the FAX board 30b, and a wide gap relay 311b. (At a position closer to the LINE2 terminal than the DAA 304b) is connected to the line 2 accommodated in the LINE2 terminal 302b of the FAX board 30b (step S144).

  Thereafter, the telephone 40 operates by receiving power from the line 2, and the user can make a call with the partner terminal connected via the line 2 by the telephone 40 (step S211).

  During this time, for example, the CPU 306b receives the detection result in step S123 of FIG. 4 from the CPU 306a of the FAX board 30a and monitors whether or not the call on the line 2 is ended (step S145), and the call on the line 2 is ended. Is detected (YES in step S145), the process returns to the standby state.

  Next, a specific example of call control based on the flowcharts shown in FIGS. 4 and 5 will be described with reference to FIG.

  In FIG. 6, when the telephone 40 is a PB type telephone, if there is a free line after the telephone 40 is off-hooked (step S101), the input of the dial number (dial tone signal) from the user is accepted (step S104). The dial number is detected by a DTMF receiver (not shown) of the dial detection unit 316 (step S105) and stored in the dial storage unit 317 (step S106).

  When the vacant line is line 1, the CPU 306a on the CH1 side reads the dial number from the dial storage unit 317 and instructs the MODEM 305a to make a call (step S108).

  Based on the calling instruction, a call is made to the line 1 via the MODEM 305a and the DAA 304a based on the designated dial number (step S109), and when the other terminal apparatus answers, the wide gap relay 311a and the relay 312 are switched. The telephone set 40 is connected to the line 1 by the control (step S110), and the other terminal device can talk.

  When the available line is line 2, the CH1 CPU 306a notifies the CH2 CPU 306b of a call instruction based on the dial number stored in the dial storage unit 317 (step S121).

  The CPU 306b on the CH2 side holds the dial number notified from the CPU 306a on the CH1 side, reads the dial number, and instructs the MODEM 305b to make a call (step S142).

  Based on the call instruction, a call is made to the line 2 via the MODEM 305b and the DAA 304b based on the dial number notified from the CPU 306a on the CH1 side (step S143), and when the other terminal device answers, the wide gap relay 311b The telephone set 40 is connected to the line 2 by the switching control (step S144), and the other terminal device can talk.

  When the telephone set 40 is a DP type telephone set, the same call control as that performed when the telephone set 40 is a PB telephone set is performed except for the dial number detection processing in the dial detection unit 316.

  That is, when the telephone 40 is a DP telephone, after the telephone 40 is off-hooked (step S101), the dial number input from the user is accepted because there is a free line (step S104). The telephone 40 sends a dial pulse signal corresponding to the input dial number.

  Here, when the hook detector 313 is composed of a photocoupler, the photocoupler emits light only at the timing when the light emitting element is not cut off due to continuous interruption of the hook signal based on the dial pulse signal input from the telephone 40. The light receiving output of the light at the light receiving element is obtained, and the light receiving output is input to the dial detector 316.

  In addition, when the hook detector 313 is constituted by a current sensor, the current value is detected by the current sensor only at the non-interruption timing due to continuous interruption of the hook signal based on the dial pulse signal input from the telephone 40, and the detection The current value is input to the dial detection unit 316.

  The dial detector 316 detects a dial number corresponding to the dial pulse signal at this time based on the light reception output of the photocoupler and the detected current value of the current sensor.

  According to the present invention, regardless of whether the telephone 40 is a PB telephone or a DP telephone, the input dial number from the telephone 40 is detected and stored, and both the CH1 side and the CH2 side Based on the dialed number, a call is made via the secondary MODEM 305 and the primary DAA 304.

  Here, the call type via the MODEM 305 and the DAA 304 is already set for each CH according to the connection line to the CH, and the call source telephone 40 is a PB type telephone or DP. Any type telephone can make a call to a line that accommodates each CH (depending on the type of the telephone 40, a line that can make a call and a line that cannot make a call do not occur).

  In the above embodiment, an empty line detecting means for detecting an empty line among the lines accommodated in each FAX board is provided (for example, provided in the CPU 306a of the main control board 30a), and the CPU 306a detects the empty line. When the free line detected by the means is the accommodation line (line 1) of the own board, a call instruction is issued via MODEM 305a and DAA 304a, and the line detected by the free line detection means is one of the other slave control boards. In the case of the line accommodated in the line (line 2), a call instruction notification based on the detected dial number is given to the slave control board (see claim 6 of the claims). However, as a modified example, the telephone 40 may be connected by arbitrarily selecting a line on which a call has been made.

  FIG. 7 is a flowchart showing a call control operation on the CH1-compatible FAX board 30a (CPU 306a) in the multi-handset call operation in the facsimile apparatus (referred to as 10B for convenience) according to this modification.

  In FIG. 7, the same process steps as those shown in FIG.

  As shown in FIG. 7, in the facsimile apparatus 10B according to the modification, steps S141, S102b, and S107b are processed differently from the facsimile apparatus 10 according to the above-described embodiment.

  That is, in the facsimile apparatus 10B according to the modification, the CPU 306a of the FAX board 30a receives the selection of the line to be connected after detecting the hook-off of the telephone 40 (step S101 YES) (step S141).

  In this line selection receiving process, for example, a line selection screen including a line to be selected is displayed on the display panel of the operation / display unit 14, and a line designated by the user on the line selection screen is received as a selected line. Can be realized.

  After accepting the selection of the line by the user, the CPU 306a checks whether or not the selected line is free (step S102b). If the line is not free (step S102b NO), the processing after step S131 is performed. If it is carried out and it is available (step S102b YES), the dial input from the telephone 40 is detected and stored (steps S103 to S106).

  Subsequently, the CPU 306a checks whether or not the line selected by the user in step S141 is the line 1 (step S107b), and if the line selected by the user is the line 1 (YES in step S107b), the step On the other hand, if the line selected by the user is line 2 (step S107bNO), the process after step S121 is executed.

  On the other hand, in the CPU 306b of the CH2-compatible FAX board 30b, on the basis of the call instruction from the CPU 306a of the CH1-compatible FAX board 30a in step S121 shown in FIG. (Call control equivalent to that of the facsimile apparatus 10 of the example).

  According to the facsimile apparatus 10B of this modified example, line selection means for selecting an arbitrary line designated by the user from among the lines accommodated in each FAX board is provided (for example, provided in the CPU 306a of the main control board 30a). ) When the line selected by the line selection unit is the accommodated line (line 1) of the own board, the CPU 306a issues a call instruction via the MODEM 305a and the DAA 304a, and the line selected by the line selection unit A configuration for notifying a calling instruction based on the detected dial number to the slave control board in the case of the line (line 2) accommodated in any of the slave control boards (30b). As a result, the user can make a call by selecting an arbitrary line among a plurality of lines accommodated in the NW I / F unit 21B. .

  In addition, the present invention is not limited to the embodiment described above and shown in the drawings, and can be implemented by being appropriately modified within a range not changing the gist thereof.

  For example, in the above-described embodiment, an example in which the telephone 40 is operated as a multi-handset by accommodating two lines has been described. However, the present invention is not limited to this, and three or more lines are accommodated. A configuration for realizing a multi-handset function by selecting a line designated by a user or automatically selecting a free line and making a call through the selected line or a free line with one board accommodated It can also be applied to.

  The present invention can be applied to a facsimile machine that accommodates a plurality of lines and realizes a multi-handset function with a single telephone.

1 is a block diagram showing a functional configuration of a facsimile apparatus according to the present invention. 1 is a diagram showing a schematic configuration of an NW I / F unit in a facsimile apparatus of the present invention. The figure which shows the specific circuit structure of the NW I / F part concerning this invention. The flowchart which shows the call control operation in the FAX board corresponding to CH1. The flowchart which shows the calling control operation in the FAX board corresponding to CH2. Operation | movement explanatory drawing which shows the flow of each process along the flowchart of FIG.4 and FIG.5. The flowchart which shows the call control operation | movement of the CH1 corresponding | compatible FAX board concerning a modification.

  DESCRIPTION OF SYMBOLS 10 ... Facsimile machine, 11 ... Central processing unit (CPU), 12 ... RAM (random access memory), 13 ... System control part, 14 ... Operation / display part, 15 ... Reading part, 16 ... Recording part, 17 ... Image storage unit, 18 ... Image processing unit, 19 ... Transmission control unit, 20 ... Network control unit, 21, 21B ... Network interface (NW I / F) unit, 30a, 30b ... Facsimile (FAX) control board, 302a, 302b ... Line connection terminal, 304a, 304b ... DAA (Data Access Arrangement), 305a, 305b ... MODEM (Modem), 306a, 306b ... CPU (Central Processing Unit), 311a, 311b ... Wide Gap Relay, 312 ... Relay, 313 ... Hook detector, 314 ... Power feeding unit, 316 ... Dial detection unit 317 ... dial storage unit, 22 ... system bus, 40 ... telephone, 50 ... public network

Claims (6)

A network control device is provided on the primary side for accommodating the line, and a plurality of modulation / demodulation devices are provided on the secondary side electrically separated from the primary side. One has a network interface unit in which a main control board that accommodates a telephone and another board is mounted as a sub control board,
The main control board is
Switching means provided on the primary side, for switching the connection between the telephone and the power supply means and dial detection means provided on the secondary side or the accommodated line;
The switching means is switched so as to connect the telephone to the secondary side, and the dial detection means detects the dial number input by the call operation of the telephone that operates by internal power supply from the power supply means. Call control means for performing call control for the accommodation line via the modem and the network controller based on the dial number detected by the detector;
A notification means for notifying a calling instruction based on the dial number detected by the dial detection means to the slave control board accommodating the line when making a call through a line other than the accommodation line of the main control board; Equipped,
The slave control board is
Based on the dial number included in the call instruction notified from the notification means, the call in the slave control board that performs call control in the slave control board for the accommodation line via the modem and the network controller. A facsimile apparatus comprising a call control means. The switching means is
2. The facsimile apparatus according to claim 1, comprising a wide gap relay having a switching contact structure in which a separation distance for electrically separating the primary side and the secondary side is ensured. The dial detection means includes
3. The facsimile apparatus according to claim 1, further comprising a DTMF receiver that receives a dial tone signal (DTMF (Dual Tone Multiple Frequency)) that is transmitted by the call operation by the push button telephone. 4. The dial detection means includes
The facsimile apparatus according to any one of claims 1 to 3, further comprising hook detecting means for detecting continuous interruption of an off-hook signal due to a dial pulse transmitted by the dial pulse type telephone. Line selection means for selecting an arbitrary line designated by the user from among the lines accommodated on each of the boards,
The call control means performs the call instruction when the line selected by the line selection means is an accommodation line of its own board,
The notification means notifies the calling instruction to the slave control board when the line selected by the line selection means is a line accommodated in any other slave control board. The facsimile apparatus according to any one of 1 to 4. A free line detecting means for detecting a free line of each line accommodated in each of the substrates;
The call control means performs the call instruction when the empty line detected by the empty line detection means is an accommodation line of its own board,
The notification means notifies the calling instruction to the slave control board when the line detected by the idle line detection means is a line accommodated in any other slave control board. Item 5. The facsimile apparatus according to any one of Items 1 to 4.

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