JPS6326583B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a digital line control device that connects information processing devices such as facsimile devices, computers, and data terminal devices to a digital communication network, and in particular, the present invention relates to a digital line control device that connects information processing devices such as facsimile devices, computers, and data terminal devices to a digital communication network. control the connection to the digital communication network of the machine, and when transmitting, transmits a receiver number instruction code according to the operator's receiver specific operation, and controls the connection of the machine to the digital communication network. The present invention relates to a digital line control device for controlling.

In a digital communication network, a switching station informs the sending side of the receiving side number code to which it will connect, and also informs the receiving side of the sending side number code, but from the perspective of the sending side, it is When the receiving party number is different from the connecting party number received from the exchange station, it is preferable to disconnect the line as soon as possible. In addition, especially when the communication partner is specified, from the receiving side's perspective, even if the digital exchange connects the call from an information processing device other than the one that is planned as the communication partner, It is preferable to disconnect the line on the receiving side.

Japanese Patent Application Laid-Open No. 52-122413 discloses an analog method in which a key signal is transmitted by a combination of two-frequency signals by pressing a button on the transmitting side, and the line is disconnected on the receiving side when the key signal is not received. An answering facsimile device has been proposed.

However, according to this, the following problems can be considered.

(1) A facsimile communication group that is scheduled to communicate with each other must be configured, and all facsimile devices within the group must be equipped with a key signal transmitter and a key signal detector. This makes it impossible to communicate with facsimile machines outside the group, so the versatility of the facsimile machine is extremely low. When joining a group, it is necessary to replace the facsimile device or add a key signal emitting/detecting device, and installation of the facsimile device is less common. Furthermore, within a group, it is not possible to distinguish between what is scheduled to be received and what is not desired to be received.

(2) In order to increase versatility, if many unspecified facsimile devices are equipped with a key signal transmitter, the line will be connected whenever there is a call from a facsimile equipped with a key signal transmitter, which will improve communication. Receive unwanted communications from unscheduled fax machines. This results in that the original purpose of blocking unintended communications from unspecified persons by transmitting/detecting a key signal cannot be achieved.

As described above, it can be assumed that there is a problem that the versatility of the facsimile device is impaired or, conversely, that the intended effect is not obtained.

The present invention prevents an information processing device using a digital communication network from being sent to an unintended location, and
The purpose is to prevent unintended reception while maintaining communication versatility.

The digital line control device of the present invention that achieves the above object includes: a number code input means; a registration writing means for writing the number code inputted by the number code input means into a registration memory means; and a transmission to a digital communication network when a call is made. destination memory writing means for writing the destination number code into the destination memory means; after the call is made;
Transmission control means that compares the number code sent from the digital communication network with the number code written in the destination memory means and disconnects the line connection when the two do not match; and The receiving control means compares the calling party number code with the number code of the registration memory means and disconnects the line connection if the calling party number code is not written in the registration memory means.

According to this, when sending a call, the destination memory writing means writes the destination number code to be sent to the digital communication network into the destination memory means, and then the destination number code is sent from the digital communication network. Then, the transmission control means compares the sent number code with the number code written in the destination memory means, and when the two do not match, disconnects the line connection. Therefore, when a line is incorrectly connected, the line is automatically released and erroneous transmission is prevented.

At the time of reception, the reception control means compares the calling party number code received at the time of incoming call with the number code of the registration memory means, and if the calling party number code is not written in the registration memory means, connects the line. I refuse to do so. Therefore, there is no chance of receiving a transmission from a location that is not written in the registration memory means, that is, a location from which the user does not wish to receive. Since it is provided with a number code input means and a registration writing means for writing the number code inputted by the number code input means into the registration memory means, the number code of the destination to which you wish to send from there can be written in advance into the registration memory means. Bye.

This digital line device has high versatility because it automatically receives the number code from the device written in the registration memory means in this way. Moreover, when this digital line device is connected to a certain information processing device A,
Even if an attempt is made to send information to another information processing device B that also has this digital line device, B will not receive A unless B has written A's number code into the registration memory means. Therefore, even if many information processing devices are equipped with the same digital line device (of the present invention), transmissions from unwanted device A will not be received, and the destination selection function of the information processing device will always work. maintained high.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

FIG. 1a is a perspective view showing the appearance of an embodiment of the present invention. In Figure 1a, 1 is a keyboard, 2
is a translucent black cover. A number display unit and an indicator light, which will be described later, are housed inside the cover 2, and when they are off, the cover 2 appears completely black. This is because although the outside is bright, the inside of the cover 2 is dark, and moreover, the cover 2 is translucent and black.

However, when the display unit and/or indicator light is turned on, the light is emitted to the outside through the cover 2, so that the display can be clearly seen.

FIG. 1b shows an enlarged plan view of the keyboard 1. This keyboard 1 includes a dial function key K _D , numeric keys K ₀ to _{K 9} , spare keys K ₁₁ to K ₁₄ , a dial input end designation key K ₁₀ , and a specific machine designation key.
Equipped with SK ₀ to _{SK 10} , start key SK ₁₁ , recall key SK ₁₂ and clear key SK ₁₃ .
Further, indicator lights L ₀ to L ₁₀ , L ₁₁ to L ₁₃ and _LD are installed inside the display window.

In the power-on state (standby state), the indicator light
L ₁₁ is lit and this is the specific machine designation key SK _0
-SK10 is in a state of being read. In this state, reading is not performed even if any of the ten keys _K0 to _K9 , the dial input designation key, and the reserve keys _K11 to _K14 are pressed. When any of the specific machine designation keys SK ₀ to SK ₁₀ is pressed, one of the indicator lights L ₀ to _{L 10} above it lights up (for example, when SK ₁ is pressed, L ₁ lights up), and the number The display unit SDU displays the number of the specific machine assigned to the key _SK1 and stored in advance.

In this way, the mode for reading presses of the specific machine designation keys SK ₀ to _{SK 10} is in the standby state, and priority is given to specific machine calls.

When dial function key _KD is pressed, indicator light _L11 goes out and indicator light _LD lights up, indicating that number input operations can be performed using the numeric keypad. In this state, if the ten keys (for example, _K1 to _K7 ) are pressed in sequence, a number ("1234567") is displayed on the number display unit SDU. When clear key SK ₁₃ is pressed, the indicator light L _D
disappears and L ₁₁ lights up, returning to the initial standby state. In other words, calling the other party by sequentially inputting 7 digits using the numeric keys K ₀ to _{K 9} , that is, calling the 7 digit dial, is as follows:
This can only be done after pressing the dial function key K _D and switching to the numeric keypad K ₀ to K ₉ reading mode.

If you press the specific machine designation keys SK ₀ to SK ₁₀ ,
While the reading is performed as is, the reading of the numeric keys K ₀ to _{K 9} is in a slave mode where the pressing of the dial key K _D is a condition.

FIG. 1c shows the arrangement of display devices within the cover 2. Inside the cover 2, a number display unit SDU, which is a 7-digit 7-segment display device, and 10 sets of indicator lights L ₁₄ to L ₂₃ are arranged.
L ₁₄ to _{L 23} are respectively arranged behind the transparent plate on which the characters shown in FIG. 1c are drawn.

The rear part of the digital line control device shown in FIG. 1a is shown in FIG. 1d. On the back of this is the power switch.
PSw, communication rejection switch RSw for specifying memory writing and communication rejection, call rejection switch RJw for specifying call rejection display, indicator light L ₂₅ that lights up when switch RSw is on, display that lights up when switch RJw is on A light L ₂₆ , a connector 3 for connecting to a digital communication network and a connector 4 for connecting to a facsimile or other terminal are installed.

FIG. 2a shows the overall configuration of the digital line control device shown in FIG. 1a. In this figure 2a,
The block indicated by the two-dot chain line 1 indicates the keyboard,
This is based on the aforementioned key switches K ₀ to K ₁₄ , K _D ,
SK ₀ ~ SK ₁₃ , RSw, RJw, indicator light L ₀ ~ L ₁₃ , L _D ,
L ₂₅ , L ₂₆ , a keyboard drive circuit 1a which gives a reading signal to the matrix circuit connected to these key switches to change the state of the signal line corresponding to the pressed key, and the signal line corresponding to each indicator light. It is comprised of a display drive circuit 1b that turns on the indicator light when there is a change in status.

The block indicated by the two-dot chain line 2I points to the inside of the cover 2, and the above-mentioned number display unit SDU,
Indicator lights L ₁₄ to _{L 23} , a number display drive circuit 2Ia that lights up and energizes each segment of the 7-digit segment, and a number display drive control circuit that disconnects the number display code and generates an energization signal by digit division and segment division. 2Ib,
A display drive circuit 2Ic that turns on the indicator lights when there is a state change in the signal line corresponding to each of the indicator lights _L14 to _L23 , and a display drive circuit 2Ic that deciphers the status display code,
It is composed of a display drive control circuit 2Id that changes the state of the signal line corresponding to the indicator light to be lit.

The two-dot chain line 5 indicates an input/output control unit that performs input/output control (keyboard input reading and control of indicator light display). The keyboard data control circuit (encoder) 5a generates a code representing a signal line (that is, a key) and latches it, latches an indicator light display code, and transmits the status to the signal line corresponding to the indicator light indicated by the code. A keyboard display control circuit (decoder) 5b that changes the number code, and a number display control circuit 5c that latches the number code and supplies it to the number display drive circuit 2Ib, which latches the indicator light display code and corresponds to the indicator light represented by that code. It is composed of an indicator light control circuit (decoder) 5d that changes the status of the signal line, and an input/output control circuit 5e that sends keyboard data, accepts each display code, and distributes it to circuits 5b, 5c, and 5d. . Designation of the input mode and output mode of the input/output control circuit 5e and distribution of code data to the circuits 5b, 5c, and 5e are performed using the address code and data code of the data & address bus. The data & address bus is connected to the input/output control circuit 5e of the input/output control unit 5, as well as to the data switching unit 6, the memory device 7, and the input/output control circuits 6f, 7d, and 8e of the microcomputer 8.

The data switching unit indicated by the two-dot chain line 6 includes an interface circuit 6a connected to the DCE of the digital communication network via the connector 3, an interface circuit 6b connected to the facsimile device via the connector 4, and an interface circuit 6a. , 6b and a data switching circuit 6c that switches between transmission mode and reception mode based on control data from the input/output control circuit 6f, and a serial/parallel conversion circuit 6d that converts serial data into parallel data and parallel data into serial data. , a timer circuit 6e that performs a timed operation for time monitoring and timing control, and an input/output control 6f.

The memory devices indicated by the two-dot chain line 7 include the keyboard 1, the input/output control unit 5, the display unit 2I,
Data switching unit 6, memory device 7, and read-only semiconductor memory (hereinafter referred to as ROM) 7 that fixedly stores operation control program data and timing constant data of the microcomputer.
a, a read/write semiconductor memory (hereinafter referred to as nonvolatile RAM) 7b that is backed up by a battery when the power is turned off, a battery backup circuit 7c that is charged when the power is turned on, and supplies power to the nonvolatile RAM while the power is turned off, and input/output. It is composed of a control circuit 7d.

The microcomputer indicated by the two-dot chain line 8 includes a central control unit (hereinafter referred to as CPU) 8a called a central processing unit or microprocessor, a semiconductor memory for reading and writing data (hereinafter referred to as RAM) 8b, an interrupt control circuit 8c, It is composed of a clock pulse oscillator 8d and an input/output control circuit 8e.

In this embodiment, the data switching unit 6
a and 6b are figures 2b and 2c, respectively.
As shown in the figure, the data switching circuit 6c is composed of an amplifier, and the data switching circuit 6c connects a transmission data line T, reception data line R, control data line C, They are connected by an induction line I and a signal element timing line S. G is the signal ground or common return wire. The directions of signal transmission and reception are indicated by arrows in FIG. 2b. The data switching circuit 6c also connects the facsimile device with a transmission data line SD, a reception data line RD, a transmission request line RS, a data set ready indication line CS, a data set ready indication line DR, a data They are connected by a set line connection indication line CDL, a data channel reception carrier detection indication line CD, a transmission signal element timing line ST2, a reception signal element timing line RT, a call indication line CI and a test indication line TI. The direction of signal transmission and reception is the second
Indicated by an arrow in Figure c.

As explained above and illustrated, the digital line control device of the present invention is separate from an information processing device such as a facsimile device, computer, or data terminal device, and is connected to a connector to communicate with them and digital communication. It is designed to be easily connected to and easily removed from networks. Therefore, the digital line control device of the present invention does not require any special modification to the information processing device when installing/removing the device. In this way, it has high versatility. Also, one touch key
Since SK ₀ to SK ₁₀ and the dial numeric keys K ₁ to _{K 9} are arranged on the same board, it is easy to judge their mutual relationship and make selections. Furthermore, one-touch keys SK ₀ to SK ₁₀ , which are often used
The surface of the operation button is made larger than that of the numeric keypad _K1 to _K9 , making it easier to press one touch and reducing the chances of making a single touch error. Furthermore, when registering a specific machine number in one-touch keys SK ₀ to SK ₁₀ , as described later, one-touch keys SK ₀ to
The SK ₁₀ , numeric keys _K1 to _K9 , and spare keys are used, and each key is arranged on the same board for efficiency and ease of use. Furthermore, the communication speed (bits/sec) of the information processing device is specified by the digital communication network and a clock frequency is assigned accordingly (for example, 2.4, 4.8, 9.6, or 48 Kbits/sec), but data switching Unit 6 has the highest clock frequency (48Kbits/
sec) and is designed for memory devices 7
The operation of the microcomputer 8 is set at a speed that is higher than that speed and can sufficiently control the operation. As a result, the digital line control device of the present invention is compatible with all communication speeds of digital communication networks. In this sense, it is highly versatile.

Next, the number registration operation of the specific device in the above embodiment and the digital line control device (first
The operations shown in FIGS. 3a and 2a) will be explained with reference to the flowcharts shown in FIGS. 3a and 3b. First, when the power is on, the destination name indicator light indicates one-touch dial input waiting.
L ₁₁ is lit. Here, the operator first turns on the communication rejection switch RSw. As a result, the keyboard data control circuit 5a gives a code representing RSw to the input/output control circuit 5e, the microcomputer 8 reads the specific machine number writing program data from the ROM 7a, and based on this program data, the communication rejection indicator _L18 , L ₂₅ is turned on and a signal indicating communication rejection is given to the input/output control circuit 6f. As a result, the data switching circuit 6c
is set to a communication rejection mode in which it sends a code indicating communication rejection and does not accept calls. Calls made by the own machine are blocked. The operator must write the specific machine number (rewriting is the same) with the communication rejection indicators L ₁₈ and L ₂₅ lit.
, the key CHi,i assigned to that specific machine is
=Press 0 to 10. When the microcomputer 8 receives the code representing the key CHi (SKi) from the input/output control circuit 5e, it latches it as a write address in the RAM 7b, turns on the indicator Li, and stores the code previously assigned to CHi. hand
Specific machine number (7 digits) stored in RAM7b
is displayed on the display unit SDU. In this CHi reading, if different keys are pressed successively, for example, CH ₁ is pressed and then CH ₂ is pressed, the microcomputer 8 will not read the pressing of CH 1 and will not read the pressing of CH _{1 and} will RAM7 allocated
Display the specific machine number (7 digits) stored in b on the display unit SDU, wait for the next key operation, and then read the press of CH ₂ , canceling the reading of CH ₁ and resetting the number already assigned to CH ₂ . RAM7
Displays the specific machine number stored in b.
Display on SDU and wait for next key operation.

Therefore, the operator presses a certain key CHi to check the specific machine number already assigned to it on the SDU, and if it is the number that should be deleted, presses the dial key _KD to delete the incorrect number (the number that will not be deleted). If so, press the other keys CH ₀ to CH ₁₀ , confirm that the number to be erased is displayed on the SDU, and then press the dial key K _D. This means that the operator must check the illuminated indicator light Li and, if necessary, the display unit.
Look at the display number on the SDU and check whether the key operation CHi was correct. If it is incorrect, press the correct key.
Press CHi, and if correct, press dial key K _D.
In this way, the specific machine number to be deleted can be confirmed on the SDU. In other words, CH ₀ ~
By selectively pressing CH ₁₀ , the specific machine number already assigned to it can be checked on the SDU. When K _D is pressed, indicator light L ₁₁ turns off and
The indicator light L _D lights up and the SDU number display disappears.
The operator then presses the reserve key _K13 . This indicates that the specific machine number will now be input. The operator then keys in the specific machine number from _K0 to _K9 . The keyed-in numbers are sequentially displayed on the display unit SDU, and when the 7-digit number has been keyed in, the operator checks the displayed number on the SDU and the number of the specific machine that he/she tried to enter, and if there is a mistake, the CHi will Try keying in again, and if it matches, display "+" and press the spare key K ₁₀ . This key _K10 indicates that input of the seven-digit number has been completed. In response, the microcomputer 8 inputs the keyed-in 7-digit decimal number.
Store in memory at the address specified by key-in key CHi in RAM7b, erase the SDU display, and press "Complete".
Let L ₁₄ , which represents , be lit. If the operator presses CHi in this state, the code stored in the CHi address, that is, the specific machine number you just entered, will be displayed.
It is read from RAM7b and displayed on SDU.
Therefore, the operator sees that display on the SDU.
It is possible to check whether the memory data in the RAM 7b is correct.
If the display is incorrect, the above dial key
Perform number registration operations after pressing _KD . When the registration is completed, that is, when the writing to RAM7b is completed, the SDU disappears and L ₁₁ , L ₁₄ , and L ₁₈ are lit, and when CHi is pressed, the specific machine number is displayed on the SDU. These states continue until RSw is turned off and unless there is another key operation.
Therefore, the operator can see the judgment of what operations have been performed up to that point on the display. When the communication rejection switch RSw is returned to OFF, the microcomputer 8 displays the communication rejection display.
L ₁₈ and L ₂₅ are turned off, the data switching circuit 6c is set to the transmission/reception standby mode, and the destination name indicator L ₁₁ remains lit. Writing to RAM7b like this,
The rewrite operation is pre-programmed in ROM7a.
This is performed based on the write control program data to the RAM 7b. Thereafter, by operator operations as described above, one or more of the specific machine designation keys CH ₀ to _{CH 10} are assigned a specific facsimile number and/or a facsimile number of a broadcast communication group that has a large number of communications, and It is stored in RAM7b.

The outline of the transmission call will be explained below. power switch
When the PSw is turned on, the microcomputer 8
The clear key is activated based on the power-on sequence program data stored in ROM7a.
In the same way as when SK ₁₃ is pressed, the destination name indicator L ₁₁
is turned on, the destination number display lamp _LD is turned off, and a standby state is entered in which the press of keys SK ₀ to SK ₁₀ is read.
Therefore, when the power is turned on or one of the specific machine designation keys SK ₀ to _{SK 10} is pressed while the power is on, the microcomputer 8
Based on the specific machine call control program data stored in the ROM7a, the number of the specific machine assigned to the pressed key SKi is sequentially read from the RAM7b at a predetermined timing starting from the upper digit and stored in the RAM8b. Latched. The number of the specific machine is then displayed on the display unit SDU. When several specific machine designation keys SK ₀ to SK ₁₀ are pressed for broadcast communication, this message is displayed each time one key is pressed.
Reading from RAM 7b, latching to RAM 8b, and display on SDU are performed. Then, when the operator presses the start key SK ₁₁ ,
The numbers latched in the RAM 8b are sequentially read out at predetermined timing starting from the most significant digits, and a calling operation is performed. When the recall key SK ₁₂ is pressed once, the indicator light L ₁₂ is turned on, and the calling operation is repeated a set number of times or for a predetermined time, and when the set value is exceeded, the call is returned to the standby state. When a call is made, the indicator light L ₁₇ lights up, and when a call is made and the other party is unable to communicate, is busy, or refuses communication, the indicator lights L ₂₀ , L ₁₉ or L ₁₈ are turned on, respectively.

When calling a facsimile not specified by keys SK ₀ to SK ₁₀ , press dial key K _D
Press , enter the 7-digit number using the numeric keys K ₀ to K ₉ , and
Next, press the key K ₁₀ displaying "+". When dial function key _KD is pressed, indicator light _L11 goes out and _LD lights up, making it possible to read the input operations of keys _K0 to _K14 , and pressing key _K10 indicates the end of seven-digit input. In this dial number designation using the numeric keypad, each time a key is pressed, a code is sent to display the number attached to the key. If the clear key SK ₁₃ is pressed while specifying a number using the numeric keypad or after 7 digits have been specified, a signal to cancel the previous operation will be sent to the digital communication network, and if the clear key SK ₁₃ is pressed during communication, a connection will be established. The line is disconnected and you are placed on standby. Therefore, when specifying a number using the numeric keypad again, press the dial key K _D again and turn on the indicator light L _D before doing so.

It has been proposed to perform number abbreviation registration such as speed dial registration, closed area connection service registration, and special line connection settings at the converter station of the digital communication circuit network, and in the above embodiment, these registrations and registration deletions are performed. Program data for performing this is stored in the ROM 7a. FIG. 3c shows a flowchart of closed connection service registration and deletion. For registration and deletion, press the dial key K _D and press the numeric key K ₁ , K ₃
and K ₂ in this order. This represents "133" and is a call to the closed connection service end of the switching station of the digital communications network. Next, press the spare key _K13 to notify the sending of registration or deletion data, and press _K2 on the numeric keypad in the case of registration. This will inform your registration. Then spare key
Press _K13 to inform that you will send the abbreviated number (2 digits), and enter the abbreviated number (2 digits) that you are about to register.
digit) using the numeric keys K ₀ to K ₉ . Then, use the spare key to indicate the separation between the abbreviated number and the specific number (7 digits), and input the number (7 digits) of the specific machine to be called using the abbreviated number using the numeric keys _K0 to _K9 . Thereafter, the user presses the "-" display key _K14 , and then presses the "+" display key _K10 to signal the end of the key input. As a result, the closed connection partner is registered (memory) in the exchange station of the digital communication network, and the specific device is subsequently called by announcing an abbreviated number (two digits) using the ten keys _K0 to _K9 . When erasing, press the numeric keypad that indicates erasure.
Press K ₉ , press the backup key K ₁₃ , enter the abbreviated number (2 digits) you want to delete, and press the "-" display key.
Just press K ₁₄ and press the "+" display key K ₁₀ .

FIG. 3d shows a flowchart for speed dial registration. This is the same as the above-mentioned closed connection service registration and deletion except for the key-in "131" representing speed dial registration, that is, pressing the keys _K1 - _K3 - _K1 , so a detailed explanation will be omitted.

Next, the confirmation operation of the calling (transmission) connection in the above embodiment will be explained with reference to FIGS. 4a and 4b. First, the confirmation operation when any one of the one-touch keys CH ₀ to CH ₁₀ is operated will be explained with reference to the flowchart shown in FIG. 4a. one touch key
When any CHi from CH ₀ to _{CH 10} is pressed, the switch SKi is momentarily closed, the microcomputer 8 detects this, turns on the indicator light Li, latches that CHi has been pressed, and then closes the start key SK. When ₁₁ is pressed, the program data for transmission based on the one-touch key number specification is read from the ROM 7a, and based on the program data, the data is transferred to the RAM 7b.
The specific machine number code addressed by CHi is read out and stored in the RAM 8b, and then the code is sent to the line starting from the higher digits. Then, from the digital communication network side, a code indicating the connection partner number (hereinafter referred to as
Wait for the arrival of ID). When this ID arrives, it is compared with the specific machine number code stored in the RAM 8b, and if the two match, the ID is displayed on the SDU and the process moves to the transmission routine. During and after sending,
The ID continues to be displayed on the SDU until the next transmit operation or reception.
If they do not match, this is an incorrect connection, so the returned incorrect ID is displayed on the SDU, L ₂₂ is lit, the line connection is disconnected, and the information processing device (facsimile: Fax) to inform you of the line disconnection.
The device returns to the standby state, but the ID display and L ₂₂ continue to be lit until the next key operation or reception call.

In this way, the ID continues to be displayed and the necessary indicator light L ₂₂ is turned on, both when the line connection is established normally and the transmission is completed, and when the line connection is abnormal and the transmission is not performed. The reason for continuing to do this is to make it easier for the operator to check what parties are connected and the resulting status without having to constantly monitor transmission operations.

The operation of confirming the call transmission using the numeric keys _K0 to _K9 will be explained with reference to the flowchart shown in FIG. 4b. When the dial function key K _D is pressed, the dial key call operation program data is read from the ROM 7a, and based on that data, the press detection of the lit dial keys K ₀ to _{K 9} of the _LD and the pressed key are executed. The code is stored and sent to the line, and when the "+" display key _K10 is pressed, it is assumed that the 7-digit key-in has been completed and the program jumps to F shown in Figure 4a, indicating the arrival of the connection partner No. code. wait. The subsequent flow is shown in FIG. 4a. The ID confirmation operation is the same as the one-touch key. In addition, when calling and confirming using these keys CH ₀ to _{CH 10} and K ₀ to _{K 9} , the operation if connection with the other party is not established within a predetermined time after sending the called party number code is as shown in the flowchart. will be described later with reference to.

Next, the confirmation operation of the answering (receiving) connection in the above embodiment will be explained with reference to FIG. 4c. RAM
7b contains the number registration operation (third
In addition to or instead of the specific machine number code written in (Figures a and 3b), speed dial registration and closed area connection services can be performed by operating the numeric keys K ₀ to K ₉ and spare keys K ₁₀ to _{K 14} . The number of the registered partner and/or the number of other communication partner using the numeric keypad is stored. This storing operation is performed by pressing the reserve key _K12 instead of CHi in the registration flow shown in FIGS. 3a and 3b.
Writing to the RAM 7b is performed to addresses other than those for specific machines CH ₀ to _{CH 10} , a flag is set at the written address, and data is sequentially written to addresses where no flag is set. To erase this written data,
In the flow shown in Figures 3a and 3b
It is performed by changing CHi to K ₁₂ and K ₁₀ to K ₁₄ .

Now, to explain with reference to FIG. 4c, when a call is received from the digital communication network, a response signal is returned to the digital communication network, and the number code (ID) from the sending side is waited for. And when the ID arrives, first do this
Store in RAM8b, display on SDU, RAM7b
sequentially compared with the ID stored in memory. The order of priority is the ID assigned to CH ₀ to CH ₁₀ , the abbreviated number registration ID, and the ID for inputting seven digits (decimal) using the numeric keypad. If the ID read from RAM 7b matches the ID given from the digital communication network, the process moves to the reception routine. If all IDs read from RAM 7b do not match, the line connection is disconnected and the standby state returns.
The ID remains displayed and the indicator light L ₂₀ remains lit.

When it moves to the reception routine and completes reception, it displays the reception ID on the SDU and remains in a standby state with _L14 lit. In this way, keeping the receiving ID displayed on the SDU and keeping L ₁₄ or L ₂₀ lit makes it easier to confirm what kind of call was received and how it was handled. It's for a reason.

Next, the recall operation in the above embodiment will be explained with reference to the flowchart shown in FIG. Make a call, call the other party, and check whether it is connected. This corresponds to the block "Did you receive the connection partner number code (ID)?" in the flow shown in FIG. 4a. When "Connected?" in Figure 5 is YES, "Compare ID with sending code stored in RAM", "Did it match?", and "Display ID on SDU" in the flow shown in Figure 4a. After the flow, the process moves to the flow of "Send start signal to FAX" in Figure 5.
When “Connected?” in Figure 5 is NO,
When the other party is busy, the system asks "Is L ₁₂ lit? (In other words, was switch SK ₁₂ closed?)"
Repeat the calling operation every 30 seconds after making the call, and
If the call is still not answered after several attempts, the L ₁₉ will light up.
Sends an abnormal end signal to the fax machine and returns to standby mode.

If the fax cannot be connected even though there is no response indicating "busy", that is, if there is no response at all, the L ₂₀ is lit, an abnormal end signal is sent to the fax machine, and the fax returns to the standby state. If the switch SK ₁₂ is not closed, it makes one call, lights up L ₁₉ when it is busy, issues an abnormal end signal to the fax machine, and returns to the standby state.

Next, the sequential automatic transmission operation to a plurality of destinations in the above embodiment will be explained with reference to the flowchart shown in FIG. First, to explain the premise, when making a call using one-touch keys CH ₀ to CH ₁₀ ,
Pressing one of them will allocate RAM7 to it
The specific machine number stored in b is displayed on the SDU, but as shown in Figure 4a, the start key
The call will not start unless you press SK ₁₁ . Then, press CHi, one of the one-touch keys, and then enter the number of originals to be sent using the numeric keys K ₀ to K _9. The number will be displayed on the SDU, and the one-touch key will be pressed on RAM8b.
The number and number of sheets are memorized, and one-touch key CH ₀ ~
By pressing CH ₁₀ and repeatedly inputting the number of originals to send,
A plurality of transmission destinations and the number of transmission originals to be sent to them are stored in the RAM 8b. In other words, the operator can enter multiple recipients and the number of originals for each recipient using the one-touch keys CH ₀ to _{CH 10} and numeric keys K ₀ to _{K 9.}
It can be programmed using the . and start key
When SK ₁₁ is pressed, one programmed destination will be read from RAM8b and its ID will be stored in RAM.
7b, a call is made, and the RAM
The number of originals stored in memory 8b is transmitted. Every time transmission of one location is completed or abnormally terminated (busy, ID mismatch, etc.), the next transmission destination and the number of documents to be transmitted are read from the RAM 8b and transmission is performed.

The transmission results for each transmission destination are stored in the RAM 8b, and when the transmission (including abnormal termination) for all transmission destinations stored in the RAM 8b is completed, the device returns to the standby state. When the operator performs an inquiry operation for transmission results, the transmission results for each transmission destination are sequentially displayed at a predetermined timing.

If the transmission ends normally, the ID indicator light will appear on the SDU, and the indicators L ₁₄ and L ₀ to L ₁₀ will appear, and if the transmission ends abnormally, the ID indicator will appear on the SDU again, and the indicators L ₁₈ to L will appear. ₂₀ and L ₀ to L ₁₀ appear.

In the above embodiment, the digital line control device issues a start signal to the information processing device when the line connection is normal and the process moves to the sending routine or the receiving routine, and sends an abnormal signal when the IDs do not match or when the call fails. and, in the receive mode, a signal indicating reception completion (this is based on the transmission completion signal received from the digital communication network). Therefore, the operation of the information processing device in response to these signals will be explained using a facsimile device as an example.

First, the outline of the facsimile apparatus is shown in FIG. 7a. In this, the facsimile reading scanning section 10 has a mechanism (automatic paper feeding) that automatically feeds out the transmitted original, and the facsimile reading and scanning section 10 has a mechanism (automatic paper feeding) that automatically feeds the transmitted original, and The reflected light emitted by the light source is focused on an image sensor via a lens, the image sensor converts the optical signal into an electrical signal, the converted analog signal is converted into a binary signal, and this binary signal is stored in the memory. Buffering is performed, and the original to be sent is fed out by a step motor.

The facsimile reading scanning control section 11 smoothly transmits and receives signals between the main operation panel section 18, the sub-operation panel section 19, and other sections, and has functions such as sub-scanning step control of the transmitted document and control of automatic paper feeding. .

The encoding unit 12 includes a facsimile reading scanning unit 10
The image signal is encoded according to the encoding algorithm instructed from the operation panel section, and the encoded information is passed to the transmission control section. The transmission control unit 13 has functions such as establishing a data link with the receiving unit of the other party, transferring encoded information, and releasing the data link. The facsimile recording/scanning unit 14 cuts electrostatic recording paper (roll shape) into A4 size, feeds out the recording paper with a step motor, buffers the image signal received from the decoding unit 16, and converts the image signal into electrostatic data using a multi-stylus. An electrostatic latent image is formed on recording paper, and the electrostatic latent image is converted into a visible image and becomes a permanent image.

The facsimile recording scanning control section 15 smoothly sends and receives signals to and from the transmission control section, etc., and performs recording paper cutter control, recording paper sub-scanning step control, developer control,
Performs recording paper ejection control, etc.

The decoding unit 16 decodes the encoded information received from the transmission control unit 17 in accordance with the instructed decoding algorithm to restore the original image information.
The transmission control unit 17 controls the detection of an incoming call from the other party's transmitter, establishes a data link, receives encoded information,
It has functions such as releasing data links.

The main operation panel section 18 provides linear density instructions, start,
It has the functions of switches normally used by operators such as stop commands, switch receivers, and indicator lights necessary for operation. The sub-scanning board section 19 has display and switch functions necessary for maintenance of the apparatus. The power supply section 20 has the function of supplying necessary voltage to the electrical and electronic components of the device. The frame cover section 21 has the function of mounting subunits such as a facsimile reading scanning section and a facsimile recording scanning section, and the function of a cover that encloses them. The interface control section 22 is located between the transmission control section and the digital line control device DXU, and controls the connection between the DXU and the FAX. The clock/timing section 23 supplies necessary clocks and timing signals to each section.

A particularly remarkable configuration of this facsimile apparatus is that the facsimile reading scanning unit 10 is configured to return the original and eject it, and when an abnormal end signal arrives from the digital line control unit DXU, the transmitted original is sent to the normal transmission end ejection line. In this case, if the start signal arrives while the document is in the standby position of the scanning unit, or if the start signal is sent from the DXU, When the document arrives, it automatically operates in transmit mode, and when the document is not in that position, it automatically operates in receive mode, and the scanner lamp lights up after the start signal arrives from DXU. point,
It is.

FIG. 7b shows the facsimile reading scanning section 10,
An outline of the document feed/discharge mechanism is shown, and FIG. 7c shows an outline of the document reading optical system. In the case of manual feeding, the original to be sent is inserted in the direction of arrow A1 in FIG. 7b, and in the case of automatic feeding, it is stored on the original cassette 24, which is constantly subjected to upward pushing force in the direction of arrow A2. When the auto feed switch AFS is closed, the feed roller motor is driven and the feed roller 25 rotates in the forward direction (counterclockwise) provided that the paper sensor S ₀ detects a document (S ₀ = ON). Manual feed original or cassette 2
The topmost sheet of the document No. 4 is sent in the direction of the paper guide 27. When this document is detected by the paper sensor S ₁ (S ₁ =ON), the step motor 28 is driven, and when the leading edge of the document is detected by the paper sensor S ₂ (S ₂ =ON), the step motor 31 is stopped. be done. The feed roller motor is stopped immediately after the tail end of one document passes under the roller 25. After that, it stops until a start signal arrives from the digital line controller DXU.

When the start signal arrives, the scanner lamp 3
2 ₁ and 32 ₂ are lit, and the document is fed at a predetermined sub-scanning speed. This is done by driving the step motor 31 in pulses. Count the step pulses that serve as the reference, and the count value is N.
In this case, it is assumed that scanning is finished and the document is placed in tray 3.
The step motor 31 is driven by high-speed pulses until the document is ejected to zero, and after the tail end of the document is detected at _S2 ( _S2
= OFF), and paper ejection is completed after a predetermined length (number of pulses M). Then, the state of the paper sensor _S0 that detects the document on the cassette 24 is checked, and if there is a document, the drive of the feed roller 25 is started again. FIG. 8a shows the flow of document feeding operation during this reading. As shown in FIG. 7c, the document is illuminated by scanner lamps 32 ₁ and 32 ₂ between the feed rollers 28 and 29 driven by the step motor 31, and the reflected light from the document is slit, the first reflecting plate 35, the imaging lens 36, The image is projected linearly onto a solid-state scanning element (one-line CCD element) 38 through a second reflector 37 and a slit, so that the document is projected at a predetermined distance (1/16, 1/8 or 1/14 mm). ) Each time the image information is sent, one line of image information is read out from the element 38, stored in the buffer memory, and provided to the encoding unit 12 at a predetermined timing.

The document detection state of paper sensors S ₁ and S ₂ is the 7th d
It is applied to the transmission/reception determination circuit 40 shown in detail in the figure, and in this, when the DXU issues a start signal,
If S ₁ =ON and S ₂ =ON (document present) at the change point, a transmission mode start signal and scanner lamp lighting instruction signal are given to the interface 22, and S ₁ =OFF and/or S ₂ =OFF (document present). none)
, the reception start signal is
given to 2. As a result, the facsimile apparatus itself determines whether to perform a transmission operation or a reception operation depending on whether or not the operator has set a document, and the transmission designation switch is omitted.

FIG. 8b shows the flow of the reception operation when the reception start signal is received. When the reception start signal arrives, the recording sheet is conveyed to a predetermined position in the recording scanning control section 15 under the control of the facsimile recording scanning section 14. When the recording paper reaches a predetermined position, paper sensor S ₄ detects this (S ₄
= ON), in response to this, the power for multi-stylus recording is turned on, and the recording paper is advanced one step for each line of decoding, and when the recording of N lines is finished, the copy recording of one page of the original is finished. Eject the recording paper. This ejection operation is similar to that in the reading section 10.

Next, the operation of the above-mentioned facsimile machine when receiving an abnormal end signal from the DXU will be explained with reference to the flowchart shown in FIG. 8c. When receiving an abnormal end signal from the DXU during reception or transmission preparation, standby, or operation, it determines whether it is in transmission mode or reception mode. Similar to the transmission/reception mode selection described above, this determination is based on whether the paper sensor S ₂ detects a document (S ₂ =ON) or not (S ₂ =OFF), as shown in the flowchart in Figure 8d. It is carried out. When in reception mode, check whether reception has ended (whether the paper sensor S ₅ in the discharge section is ON or not, or whether the count value = N is the count value ≠
N), if it has finished, follow the operation flow when reception has finished normally, and if it has not finished, turn on the power for multi-stylus recording.
Turn it OFF, connect the electromagnetic clutch, and eject the recording paper in the recording section or the recording standby position in fast forward motion. When in transmit mode, S ₂ = ON or S ₂ =
By checking OFF, or by checking whether the count value ≠ N or count value = N, you can check whether the transmission has finished or not. Continuing, if the step motor 31 is not finished, first stop the forward rotation of the step motor 31,
Next, the step motor 31 is reversed to return the document, the feed roller 25 is further reversed to return the document to the insertion slot, and the return roller ₃₃₁ is driven to eject the document onto the document table (operator's work table) 41. do. In this way, returning the document to the table 41 in the case of an abnormal termination and ejecting it onto the tray 30 only in the case of a normal transmission termination makes it easy for the operator to know that complete transmission was not performed due to a transmission abnormality. This is to make a judgment. An operator who was not present during the transmission sees the document being ejected onto table 41 and knows that the document has not been completely transmitted.

As shown in the flowcharts of FIGS. 4a, 5, and 8c, the digital line control device DXU of the present invention, which has already been described in detail, operates when a call fails during transmission (when setting a single call,
(When setting a total of 3 re-calls with key switch SK ₁₂ pressed), if the calling ID and the connected party's ID notified from the digital line network are different, the line will be connected from the digital line network. When the clear key switch SK ₁₃ is closed, an abnormal termination signal is sent to the above-mentioned facsimile device, which is an information processing device, so the facsimile device will not respond in any of these cases. The document is also discharged onto the table 41. The document is ejected onto this table 41, and furthermore, in the DXU,
After that, unless there is a key operation or external input, the transmission status will continue to be displayed on the SDU and L ₀ to _{L 23} , and the operator, especially, will be able to load the original into the facsimile machine and start the process. An operator who leaves the place after making a call and waiting for the transmission to be completed can easily grasp the situation up to that point. Note that the document is ejected when the document is terminated abnormally using the table 41.
The paper is not limited to the top, but may be discharged to a location other than the tray 30. Also, in reception, it is preferable to eject the recording paper to a different location when the reception ends abnormally than when it ends normally.

The reason why the scanner lamps 32 ₁ and 32 ₂ are turned on after the start signal arrives from the DXU, instead of turning them on when the document is set in the facsimile machine, is mainly for repeat calls (up to 3 times). ), since it takes a relatively long time to establish a line connection, the purpose is to reduce power consumption during that time and extend lamp life.

In the above embodiment, a non-volatile storage device is used to store the number (7 digits) of the specific machine.
Although RAM 7b is used, it may be replaced by core memory, floppy disks, or other similar storage operations. Furthermore, in the case of an information processing device such as a computer that has its own non-volatile memory, or even a facsimile device that has a non-volatile read/write memory, the RAM 7b can be omitted and they can be used on a specific machine. It may also be used for number memory.

As described above, the digital line control device of the present invention includes:
Number code input means 1; said number code input means 1
registration writing means 8a for writing the input number code into the registration memory means 7b; destination memory writing means 8a for writing the destination number code to be sent to the digital communication network at the time of a call into the destination memory means 8b;
After the call is made, a transmission control means 8a compares the number code sent from the digital communication network with the number code written in the destination memory means 8b and disconnects the line connection when the two do not match; , compare the calling party number code received at the time of incoming call with the number code in the registration memory means 7b, and disconnect the line connection if the calling party number code is not written in the registration memory means 7b. reception control means 8a;
When sending a call, the destination memory writing means 8a writes the destination number code to be sent to the digital communication network into the destination memory means 8b, and then the destination number code is sent from the digital communication network. When the received number code is received, the transmission control means 8a stores the received number code in the destination memory means 8b.
The line is compared with the number code written in the line, and if the two do not match, the line connection is disconnected. Therefore, when a line is incorrectly connected, the line is automatically released and erroneous transmission is prevented.

At the time of reception, the reception control means 8a registers the calling party number code received at the time of incoming call and stores it in the memory means 7.
The number code of the calling party is compared with the number code of b, and if the calling party number code is not written in the registration memory means 7b, the line connection is disconnected. Therefore, the registration memory means 7b
Transmissions from information processing devices that have not been written to, that is, information processing devices that you do not wish to receive, will not be received. It is equipped with a number code input means 1 and a registration writing means 8a for writing the number code inputted by the number code input means 1 into the registration memory means 7b. All you have to do is write it in the means 7b.

The digital line device of the present invention has high versatility because it automatically receives the number code from the device written in the registration memory means 7b in this way. Moreover, even if this digital line device is connected to a certain information processing device A and an attempt is made to send data to another information processing device B that is also equipped with this digital line device, B has not written A's number code into the registration memory means. , B does not receive A. Therefore, even if many information processing devices are equipped with the same digital line device (of the present invention), transmissions from unwanted device A will not be received, and the destination selection function of the information processing device will always work. maintained high.

[Brief explanation of the drawing]

FIG. 1a is a perspective view showing the external appearance of an embodiment of the present invention, FIG. 1b is an enlarged plan view of the keyboard 1,
Fig. 1c is a front view showing the arrangement of display devices inside the cover 2, Fig. 1d is a rear view showing the arrangement of switches on the rear side, Fig. 2a is a block diagram showing the internal circuit configuration, and Fig. 2b is a , FIG. 2c is a circuit diagram showing the interface circuit 6a shown in FIG. 2a, and FIG. 2c is a circuit diagram showing the interface circuit 6b shown in FIG. 2a. Figures 3a, 3b, 3c and 3d illustrate a first
This is a flowchart showing the operation flow and operator operations of the digital line control device shown in Fig. 3a, Figs. 3a and 3b show the flow of writing a specific machine number to the RAM 7b, and Fig. 3c shows the closed area connection service registration. , shows the release flow, and FIG. 3d shows the speed dial registration flow. Figures 4a and 4b
The figure is a flowchart showing the ID comparison operation of calling the receiving party using one-touch key action and numeric key action, and comparing the calling operation number and the connected device number. Figure 4c shows the case when there is a receiving call 3 is a flowchart illustrating an ID comparison operation for comparing an ID on the sending side and a communication partner ID on the receiving side. FIG. 5 is a flowchart showing a recall operation, and FIG. 6 is a flowchart showing a transmission program setting flow for automatic transmission to multiple locations. FIG. 7a is a block diagram showing the configuration of a facsimile device connected to the digital line control device of the present invention.
Figure b, Figure 7c, and Figure 7d are a schematic side view and a circuit diagram showing a part of the configuration, respectively. 8th
FIG. 8A is a flowchart showing the main transmission operations of the facsimile apparatus, and FIG. 8B is a flowchart showing the main reception operations. 8th
Fig. 8c is a flowchart showing the facsimile operation when an abnormal end signal is received from the digital line control device, and Fig. 8d is a flowchart showing the transmission/reception mode determination operation. 1: Keyboard (number code input means), 2:
Cover, 2I: Display device, 3, 4: Connector,
5: Input/output control unit, 6: Data switching unit, 7: Memory device (registration memory means), 8: Microcomputer, 8a: Central control unit (registration writing means, destination memory writing means, transmission control means, reception control means), 8b: RAM (destination memory means), 24: Original cassette, 25, 28, 2
9,33 ₁ : Feed roller, 26: Suction fan,
27: Paper guide, 30: Paper output tray, 31:
Step motor, 32 ₁ , 32 ₂ : Scanner lamp, 34 : Pressure plate, 35 , 37 : Reflector, 36 : Imaging lens, 38 : Solid state scanning element, 40 : Transmission/reception determination circuit, S ₀ , S ₁ , S ₂ ... :Paper sensor.

Claims (1)

[Scope of Claims] 1. A device that is inserted between an information processing device such as a facsimile device, a computer, or a data terminal device and a digital communication network, and connects the information processing device to the digital communication network in response to an incoming call from the digital communication network. In a digital line control device that connects to a digital communication network, transmits a call to a digital communication network in response to a transmission instruction, and connects the information processing device to a designated destination information processing device via the digital communication network, a number code is used. Input means; Registration writing means for writing the number code input by the number code input means into the registration memory means; Destination memory writing for writing into the destination memory means the destination number code to be sent to the digital communication network when a call is made. Transmission control means that compares the number code sent from the digital communication network with the number code written in the destination memory means after the call is made, and disconnects the line connection when the two do not match; , a reception control that compares the calling party number code received at the time of an incoming call with the number code in the registration memory means, and disconnects the line connection if the calling party number code is not written in the registration memory means; A digital line control device comprising: means;