JPS6281859A - Automatic dialing device for telephone - Google Patents

Abstract

PURPOSE:To realize the automatic dial function of a telephone with a simple and inexpensive constitution by utilizing effectively the external interface function of a pocketable computer or a personal computer, etc., that is objected as a line connection. CONSTITUTION:An input/output control part 13 having various external connection interface functions to enable a connection to an external equipment is provided at a computer main body, and a telephone line interface mechanism 4 is provided between the input/output control part 13 and a telephone line 2. At the telephone line interface mechanism 4, a relay contact Ryc connected to the telephone line 2, and a relay control part 21 are provided. The relay control part 21 breaks and connects the relay contact Ryc by a dial command from the computer main body, sending automatically a dial pulse onto a line.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a telephone automatic dialing system that realizes an automatic telephone dialing mechanism by effectively utilizing the external connection interface function of a pocket computer, personal computer, etc. to which a line is connected. Relating to dialing devices.

[Prior art and its problems] Conventionally, when attempting to realize an automatic dialing function in a system in which a pocket computer, personal computer, or other calculator is connected to a telephone line and data is sent and received via the same line, the line connection Each target computer required dedicated equipment such as an NCU (network control unit) and a modem (MODEM).

However, conventional H
l 2H type is a pocket computer to be connected,
Since it is much more expensive than computers such as personal computers and causes a significant increase in system price, it is not suitable for systems connected to pocket computers, personal computers, etc. as described above.

For these reasons, there has been a strong desire for an inexpensive and compact automatic dialing mechanism that can be connected to pocket computers, personal computers, and the like.

[Objective of Invention 1] This invention effectively utilizes the external connection interface function of a pocket computer, personal computer, etc. to which a line is connected, and provides a telephone automatic dialing machine N■ with a simple and inexpensive configuration. The purpose of this invention is to provide a telephone automatic dialing device that realizes the following.

[Summary of the Invention] The present invention effectively utilizes standard interfaces for external connections provided in pocket computers, personal computers, and other computers connected to telephone lines, and easily connects them to two telephone lines. 1i circuit and the same circuit.''
By controlling via the standard interface, it is easy to use (
This is a simple and inexpensive automatic telephone dialing device.

That is, the present invention provides a circuit between a telephone line and a calculator such as a pocket computer or a personal computer connected to the same line, and a relay contact circuit connected between a pair of lines of a bipedal telephone line; and a relay control circuit that constantly closes the relay contact according to a first control command from the computer main body, and intermittently opens and closes the relay contact according to a second control command from the computer main body, By interposing an automatic dialing device configured to put the telephone line into a line connection state by a first control command from the two-legged computer main body, and send a dial pulse onto the telephone line by the second control command, You can easily use the external connection interface function of the target computer for cargo movement without using expensive automatic dialing equipment or modifying the target computer or telephone. This realizes an automatic telephone dialing mechanism with a simple and inexpensive configuration.

[Example] (1), composition FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a computer body, such as a personal computer body, which transmits and receives data via a telephone line 2. CPUs 1 and L that control the entire device, a program area, a data area, a buffer area, etc. are secured. In addition to the internal structure including the internal memory 12 and the like, a human output control section 13 is provided which has various external connection interface mechanisms to enable connection with external devices. Here, as external connection interface mechanisms, in addition to CRT interfaces, keyboard interfaces, etc.
Cassette recorder interface (hereinafter referred to as CMT interface) 131, and RS-232e
It has an interface 132. Among these external connection interfaces, a C-IT interface 131 is used here to connect a telephone line interface mechanism 4, which is the gist of the present invention, to be described later, between the personal computer main body 1 and the telephone line 2. ing.

Reference numeral 2 is a telephone line for the local or general public, and reference numeral 3 is a dial type telephone with a fixed dial number connected to the telephone line 2.

Reference numeral 4 denotes a telephone line interface mechanism connected between the personal computer main body 1 and the telephone line 2, which is roughly divided into a switching circuit that controls line connection using a relay, and a signal circuit that performs transmission/reception; til+ control. .

FIG. 2 is a circuit diagram showing a specific circuit configuration of the telephone line interface mechanism 4 and its connection interface in one embodiment.

In FIG. 2, 21 is a switching relay consisting of a relay coil (Rc), a normally closed relay contact (Ryc), and a normally open relay contact (Ryo), which are operated by the excitation effect caused by energization of the coil. The relay coil (Re) of this switching relay 21 connects to the motor drive terminal (REMI) of the motor remote control 1 circuit provided in the CMT interface 131 of the personal computer
) and the ground terminal (GND) together with a back electromotive force prevention diode (D). Also, one end of the normally open relay contact (Ryo) of the switching relay 21 is connected to one line L1 of the telephone line 2 via an isolation transformer 23 and a resistor R1, which will be described later, and the other end is connected to one line L1 of the telephone line 2 via a resistor R2. It is connected to the other line L2 of the telephone line 2, and a normally closed relay contact (Rye) is interposed in one line L1 of the telephone line 2 connected to the telephone set 3.

22 is an amplifier for amplifying the transmission signal (serial data) from the personal computer main body l; 23 is for transmitting the transmission signal (serial data) that has passed through the amplifier 22 onto the telephone line 2; This is an isolation transformer for manually transmitting serial data (serial data) to a personal computer. The amplifier 22 is connected to the CMT interface 1 of the personal computer main body l.
The signal output terminal (OU
A transmission signal (serial data) is received through the T, and its amplified output is supplied to the isolation transformer 23 through a variable resistor (VRl) for output level adjustment. Fork,
L The signal input terminal (IN) of the signal input/output circuit provided in the CM T interface 131 receives the received signal (serial data) is input.

3 and 4 are for explaining the operation of the above-mentioned embodiment, respectively, with FIG. 3 being a flowchart and FIG. 4 being a time chart.

(2) 1 action C of the human output control section 13 of the personal computer main body 1
A telephone line interface device (134) is connected to the MT interface 131 with the circuit connection shown in FIG. 2 between the telephone line 2 connected to the telephone set 3.
The memory 12 of the personal computer main body l contains CM
A program including T interface control commands and data for automatic dial control including dial numbers are loaded in advance.

When transmitting data by automatic dialing from the personal computer main body 1, the telephone line interface mechanism 4 is activated under the control of the personal computer main body 1, first, the line is turned on (the receiver is lifted), and then the telephone line interface mechanism 4 is activated. Send a dial pulse to (dial turned).

That is, the personal computer main unit 1 starts the automatic dial control program stored in the memory 12 in accordance with an input instruction for automatic dial transmission by operating the operator's keyboard (KB), etc., and first, the motor drive terminal of the CMT interface 131 is activated. (REMI), and the relay coil (Rc) of the switching relay 21 is energized. This allows telephone line 2
A normally closed relay contact (Ry
c) is switched off and telephone 3 connects to telephone line 2.
The normally open relay contact (Ryo) is switched on instead, and the line Ll- of the telephone line 2 is disconnected from the telephone line 2.
A closed circuit consisting of resistor R1 - isolated transformer 23 - normally open relay contact (Ryo) - resistor R2 is formed between L2, and this short circuit of a predetermined impedance turns on the line of the telephone 3 ( Figure 3 Step St
).

Next, the personal computer main body l reads out the dial number of the destination one character at a time from the beginning, and reads the dial number of the destination one character at a time, and
RT), the relay coil (Re) is turned on and off the number of times according to the dial number, and a dial pulse is sent to the telephone line 2. That is, one character of the dial number of the destination is read from the beginning, and only when that value is "0", it is set to "10" and that value is set in a predetermined counter. Then, according to the value on the counter above, the relay coil (Rc) is de-energized a number of times.
Subsequently, a dial pulse according to the above numerical value is sent onto the telephone line 2. When the transmission of dial pulses for one character is completed, read out the next character of the dial number,
This value is set in the counter and a dial pulse is sent out in the same manner as above. This operation is repeated for all dial numbers (Snaps 82 to S8 in FIG. 3).

When all the dial pulses of the destination dial number have been sent, it is next determined whether the data should be sent or not, and if the data to be sent is -1-, C! The process continues 'tri' 81 for a certain period of time until a signal indicating "sendable" arrives from the destination called by the dial pulse (steps 89 to S11 in FIG. 3).

Then, confirm the arrival of the "send ready" signal from the destination 11 (in other words, if it is the data to be transmitted, the same data is bit serially moted and the signal input/output circuit provided in the CMT interface 131 is Output end 1'-(OUT
) to the telephone line 2I- via the amplifier 22 and the isolation transformer 23 (step S in Fig. 3).
L2).

After confirming the completion of data transmission, it sounds the buzzer (BZ) to notify that it is possible to make a call using telephone 3, waits for a certain period of time, and then determines whether the call made by telephone 3 is not possible. After confirming that there is no call (or has ended), disconnect the relay coil (Rc), turn off the normally open relay contact (Ryo), and turn off the normally closed relay contact (Rye).
is turned off and the buzzer (BZ) sounds to notify the end of the call (Steps 313 to S17 in Figure 3).
.

2. When there is no determination of the data to be transmitted (Step S10 in Figure 3), when it is determined that there is no data to be transmitted, the buzzer (BZ) sounds and the 1-I stuffing machine Step 51 in Fig. 3 to inform that it is possible to make a call by 3.
4) After waiting for a certain period of time, determining whether there is a call or not, and confirming the end of the call (or no call), the relay coil (Rc) is de-energized and the normally open relay contact (Ryo) is turned off, normally closed. Turn off the relay contact (Ryc) and turn off the buzzer (B).
Z) to notify the end of the call (steps S15 to S517 in FIG. 3).

FIG. 4 shows the ringing timing of each line type deaf and the buzzer (BZ) at this time.

The pulse width of the dial pulse during dialing is specified in the technical standards of the Ordinance of the Ministry of Posts and Telecommunications, and must be adjusted to satisfy these standards. In the above embodiment, the pulse width is controlled by software and can be easily adjusted with high precision. Specifically, this can be easily adjusted by increasing or decreasing the number of times the dummy command is executed to buy time in the pulse generation off/off control routine in step S6 of FIG. 3 above. Similarly, line on time and the like can be easily adjusted.

Also, the telephone line interface mechanism 4 and the telephone 1111
, @2 can be connected by horizontally connecting the telephone 3 with the .lp rows, similar to a so-called parent-child telephone, and therefore the connection of the telephone line interface mechanism 4 is extremely easy.

By controlling the line connection including the automatic dialing function as described above, the automatic dialing machine t1η can be provided at a low cost and in a small size. Also, since the standard interface is used, it is easy to create software. Easy and easy to achieve.

1- In the embodiment, the CUT interface 1
31 is used to connect the telephone line interface mechanism 4 between the personal computer main body 1 and the telephone line 2, which is the gist of the present invention. Shown in the figure.

Here, instead of the CMT interface 131, R
A telephone line interface mechanism 4, which is the gist of the present invention, is connected between the personal computer main body 1 and the telephone line 2 using an S-232c interface 132. In this case, the R5 terminal of the modem control circuit of the RS-232c interface 132 may be used to excite and control the relay coil (Rc) of the switching relay 21, and its operation can be easily understood from the above embodiment. Therefore, its explanation will be omitted.

In this way, by realizing an automatic dialing device using the 232C interface 132, personal computers, minicomputers, office computers, etc. that do not have a CMT interface can also use the cheap f11ti and An automatic dialing mechanism can be easily realized.

Incidentally, the connection interface between the personal computer main body 1 and the telephone line interface mechanism 4 is the above-mentioned CMT interface 131 and R
Not only the S-232c interface 132 but also other external connection interfaces can easily be used to
``Q's automatic dialing mechanism is possible.

In the above embodiment, the normally closed relay contact (Rye) of the switching relay 21 is interposed in one line L1 of the telephone line 2 of the telephone 3, so that the telephone 3 can be used as a telephone when the line of the personal computer main body l is used. Although it is disconnected from the line 2, this relay contact is not necessarily necessary.For example, it can be used to display the line usage status of the personal computer main unit 1, and to inform the user whether or not the telephone 3 can be used. 1-The relay contact described above was omitted (14
May be completed.

[Effects of the Invention] As described in 1-1 below, according to the automatic telephone dialing device of the present invention, the telephone line is connected between the telephone line and a computer such as a pocket computer or a personal computer connected to the same line. A relay contact is connected in a circuit between a pair of lines, and a first control command from the computer main body causes the relay contact to be in a steady closed state, and a second control command from the computer main body causes the relay contact to be closed. and a relay control circuit that intermittently opens and closes the telephone line, and by a first control command from the computer main body, the telephone line is brought into a line connection state, and by a second control command, the telephone line is dialed. By intervening an automatic dialing device configured to send out pulses, it is possible to modify the computer main unit and telephone set to be connected without using expensive automatic dialing equipment. By effectively utilizing the external connection interface function of the computer to be connected, an automatic telephone dialing mechanism can be realized with a simple and inexpensive configuration.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the telephone line interface mechanism in the above embodiment, and FIG. 3 is a block diagram for explaining the operation of the above embodiment. FIG. 4 is a flowchart, FIG. 4 is a time chart, and FIG. 5 is a block diagram showing the configuration of a telephone line interface mechanism in another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Personal computer body, 2...Telephone line, 3...Telephone, 4...Telephone line interface mechanism, 11...CPU, 12...Memory, 13
...Person output control section, 21...Switching relay,
22...Amplifier, 23...Isolation transformer, 1
31...CMT interface, +32...R
S-232c interface, Re...relay coil, Ryo...normally open relay contact, Rye...normally closed relay contact, R1, R2...resistance. Applicant's agent Patent attorney Takehiko Suzuru Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] It is interposed between the external connection interface section of the computer main body and the telephone line, and includes a relay contact that is circuit-connected between a pair of lines of the telephone line, and a relay contact that is connected in a circuit between a pair of lines of the telephone line, and the relay is activated by a first control command from the computer main body. a relay control circuit that keeps the contacts in a steady state and opens and closes the relay contacts intermittently according to a second control command from the computer main body; An automatic telephone dialing device that connects a line and sends a dial pulse onto the telephone line in response to the second control command.