KR870002117B1 - Telephone set combined interphone - Google Patents

Abstract

In the invention, a button enables a circuit to dial a preset number in memory and drives a tape to transmit a buglar alarm to the police or transfer a gate-interphone communi. to a phone at the place of receiver's presence. High level pulse outputs in order in intervals of a second from a decode bring three optocouplers to make short circuits at resp. output terminals to the effect of pushing RESET, AUTO and #1, buttons on the key pad to dial the preset number in #1, while an automatic switch drives the tape to transmit the memory content to an impedance matching transistor.

Description

Intercom

1 is an overall circuit diagram of the present invention (the dotted line indicates the interlocking state of the switch).

FIG. 2 is a schematic diagram of the interphone circuit 1 of FIG.

3 is a schematic diagram of the telephone circuit 2 of FIG.

* Explanation of symbols for main parts of the drawings

1: Interphone Circuit 1a: Melody Generator

1b: timing circuit 1c: constant voltage circuit section

1d: voice amplifier 2: telephone circuit

2a: rectifier circuit part 2b: tone generating part

2c: call circuit 2d: phone number memory

3: tape player IC ₁ : multivibrator

IC ₂ : Decoder IC _3a -IC _3c : Optocoupler

IC ₄ : Timer Sla-Sld: Emergency Switch

HS ₁ , HS ₂ : Hook switch CS: Call button

The present invention relates to an interphone combined telephone which is capable of automatic dialing in emergency and absence by adding a separate circuit to connecting the interphone and telephone circuit.

In the prior art, since the interphone and the telephone were separately produced separately, the mold production had to be performed separately. This caused a price increase, and when the interphone rang while using the telephone, there was an inconvenience of moving to the place where the interphone was located. In the absence of visitors, there was a problem that can not be contacted because they do not know where to go out.

The present invention solves the above-mentioned problems, the built-in interphone and telephone circuit in one body, and by adding an automatic dialing function in case of emergency (thief, robbery intrusion) if you want to quickly save the intercom When the emergency button is pressed, the telephone number memorized in the telephone circuit is automatically dialed and the recording tape is operated so that the contents of the recording tape can be delivered to the relevant institution (police, police box). It is an object of the present invention to provide an interphone combined telephone with a special function that allows a telephone number of an outgoing place stored in the phone to be automatically dialed so that a call with a visitor can be made at the outgoing place.

Referring to the present invention in detail based on the accompanying drawings as follows.

1 is an overall circuit configuration diagram of the present invention, as shown in the drawing, to connect a known interphone circuit 1, a telephone circuit 2, and add a multivibrator to add a special function as described above. (IC1), decoder (IC2), optocoupler (IC3a, IC3b, IC3b ', IC3c), timer (IC4) and other accessory circuits.

When not using the present invention, the switches S-2a, S-2b, and S-2c are located at the contacts E, F, and R, and emergency switches S-1a, S-1b, S-1c, S-1d) is located at the contacts A, B, C, and D. If, in an emergency, the user presses the buttons of the switches S-1a, S-1b, S-1c, and S-1d, the switches S-1a, S-1b, s-1c, and s-1d are connected to the contact A. Hooks off the lines L5a and L5b of the third-degree telephone circuit 2 connected to the switch S-1c at positions ', B', C 'and D', and switches S -1a supplies power to pin 4 of the multivibrator IC1 so as to oscillate to the multivibrator IC1 at, for example, 1.2-1.3 Hz.

At this time, the multivibrator IC1 inputs a square wave oscillating output signal having a predetermined frequency through the output terminal pin 5 to the clock input terminal pin 14 of the decoder IC2, and pin 15 is a switch (S-2a) and a contact (E). Through the switch S-1b and the contact B ', the ground terminal is grounded to reset state.

Accordingly, the decoder IC2 sequentially outputs one high level pulse to the output terminals pin10, pin5, and pin9 at intervals of about one second. When this high level pulse is input to the input terminal pin1 of the optocoupler (IC3a, IC3b, IC3c), the output terminals pin4 and pin5 are short-circuited to each other, so that the RESET, AUTO, and 1 buttons of the keypad are automatically pressed. The phone number memorized in # 1 is automatically dialed.

Here, each output terminal pin4, pin5 is configured in parallel to each button, RESET button, AUTO button # 1 button, so shorting pin4, pin5 will have the same effect as the corresponding button. In addition, in order to perform the automatic dialing function, the RESET button and the AUTO button # 1 button must be pressed sequentially so that the telephone number stored in the storage location corresponding to # 1, for example, the police station telephone number, is automatically dialed by the telephone circuit (2). do.

At the same time, the switch (S-1d) is also turned ON at the same time, so that the power recorded to the tape player is connected to the output terminal (L2) of the interphone circuit (1). Transmitted to the impedance matching transformer T1, the coupling capacitor C6, the resistor R8, and the transmission line L3a and L3b of the telephone circuit 2, the call circuit portion 2C of FIG. (2b), the audio signal flows to the trunk lines T and R through the rectifier circuit 2a.

If you leave the house and go out, explain the process of the call between the visitor and the landlord at the place of departure.

When going out, press the button so that the switches (S-2a, S-2b, S-2c) are located at the contacts (E ', F', R '), and the switches (S-3a, S-3b, S-) of the hand cell. 3c, S-3d, S-3e, and S-3f are located at the contacts (G, H, I, J, K, L), and the phone number of the place to go out at # 2 is memorized before going out. .

When the visitor presses the call button CS of FIG. 2 when going out, since the power supplied from the timing circuit 1b is grounded through the ground terminal of the speaker SP1b, a low pulse is output to the line L6. It is input to the resistor R6, the diode D1, the noise canceling choke coil RF, and the pin 8 of the timer IC4 via the call signal input terminal of FIG.

At this time, the timer IC4 operates as a one shot mode, and the time constant is determined for about 4-5 minutes by the value of the resistor R5 and the capacitor C4, and the output terminal pin9 of the timer IC4 is the time constant. Output a high level signal during the period. This high level signal is inputted through the resistor R4 to the base of the transistor Q1 to conduct the transistor Q1 to reset pin15 of the decoder IC2 connected to the switch S-2a in case of emergency. As shown in the figure, high signals are sequentially output from pin 10, pin 5, and pin 9 and input to pin 1 of optocouplers fC3a, IC3b, and IC3c, respectively.

Therefore, pin4 and pin5 form a contact point, which in turn causes the effect of automatically pressing RESET, AUTO, and 2 of the keypad of FIG. 3 so that the telephone number of # 2 stored in the telephone number storage section 2d of FIG. 3 is automatically dialed. The dial signal is sent to the trunk line terminal TR via the tone generator 2b and the rectifier circuit 2a.

At the same time, the high signal output from the output terminal pin9 of the timer IC4 operates the relay RL1 via the contact L and the switch S-3f via the diode D2.

By operation of the relay RL1, as shown in FIG. 2, the switches S-4a, S-4b, S-4c, and S-4d of the interphone circuit 1 are connected to the contacts M ', N', O ', When the visitor speaks through the microphone combined speaker SP2b of FIG. 2, the voice signal is inputted to the voice amplifier 1d and amplified, and then the lead signal L2 is used. It is transmitted to the transformer T1 of FIG. 1 and is connected to the transmission lines L3a and L3b of the third-degree telephone circuit 2 via the capacitor C6 resistor R8. Therefore, the voice signal is sent to the trunk line terminal T.R through the call circuit section 2c, the tone generating section 2b, and the rectifier circuit section 2a of the telephone circuit 2.

The voice signal spoken by the landlord at the outing place is input to the old terminal TR, and the impedance of FIG. 1 is passed through the receiving lines L4a and L4b through the rectifying circuit unit 2a, the tone generating unit 2b, and the communication circuit unit 2c. It is transmitted to the matching transformer T2 and input to the lead wire terminal L1 of the second intercom circuit 1, and thus the contact N ', the switch S-4b, the amplifier OP1 switch S-4C. It is delivered to the speaker SP1b via the contact point O 'so that the visitor can talk to the landlord.

The following describes the operation process when using as an interphone.

In general, the hand cell should be in the hook-on state, so the hook switches HS1 and HS2 are positioned at the contacts S 'and T'.

When using an interphone, the switches S-3a, S-3b, S-3c, S-3d, S-3e, and S-3f are positioned at the contacts G ', H', I ', J', and L '. When the hand cell is lifted, the hook switches HS1 and HS2 are switched to the contacts S and T so that the power supply of B + is the contact point. (S), the relay RL1 is operated through the hook switch HS2, the contact L ', and the switch S-3f.

At this time, the switches S-4a, S-4b, S-4c, and S-4d are positioned as the contacts M ', N', O ', and P', as shown in FIG. When a voice signal is transmitted to the lead wire L1 of FIG. 2 through the switch S-3d and the contact J ', the contact N', the switch S-4b, the amplifier OP1, and the switch are input. (S-4c) and the speaker O1, the speaker is delivered to the speaker SP1b. When the voice signal is transmitted to the microphone speaker SP2b, the voice amplifier 1d passes through the lead line L2. It is transmitted to the 1 degree contact point H 'switch s-3b and the speaker SP1a of a hand cell.

The switches S-1a, S-1b, S-1c, S-1d, switches S-2a, S-2b, S-2c, and switches S-3a, S-3b, S-3c, S -3d, S-3e, S-3f), switches (S-4a, S-4b, S-4c, S-4d) and hook switches (HS1, HS2) are connected to one button each, It is configured to be linked in one operation.

The switch S-5 of FIG. 1, which is not described, is used to make the phone compatible with the tone and pulse methods. The speaker SP1c connected to the contact point 0 of FIG. A melody-only speaker for transmitting a melody signal generated in the melody generating unit 1a, and 1c is a constant voltage circuit unit.

As described above, the present invention is to use the interphone and the telephone to enable the automatic dialing of the price increase in the mold making by the operation of the button switch in the case of the emergency and absent Ringo, and to make a call with the visitor outside the gate and the landlord who goes out. .

Claims (1)

In the connection between the known interphone circuit 1 and the known telephone circuit 2, the interlock switch S-1a, S-1b, S-1c, S-1d is connected to the contacts A, B, C, When switching from D) to contacts A ', B', C ', and D', the telephone circuit 2 is hooked off and the multivibrator IC1 is oscillated to output the output terminal pin5 of the multivibrator IC1. The oscillator output signal is sent to the clock terminal pin14 of the decoder IC2, and the pin15 of the decoder IC2 is reset to the output terminals pin10, pin5, and pin9 of the decoder IC2. Outputs high signal pulses one by one and inputs them to the input terminals (pin1) of the optocouplers (IC3a, IC3b, IC3c), and the output terminals (pin4, pin5) make contacts and reset the telephone circuit (2) and keypad , AUTO and 1 are automatically dialed, and at the same time, the tape player 3 is operated so that the recorded contents are recorded through the impedance matching transformer (T1), capacitor (C6) and resistor (R8). Connect to the telephone line L3a, L3b of the telephone circuit 2, and use the interlock switches S-2a, S-2b, S-2c to the contacts E ', F', R '. F ', R'), when a low signal pulse is input to the call signal input terminal, the input terminal of the timer IC4 is passed through the resistor R6, the diode D1 and the noise canceling choke coil RF. The high signal pulse is output from the output terminal pin9 of the timer IC4 during the time constant of the resistor R5 and the capacitor C4 connected to pin8 and pin13 to decode the transistor Q1. Connect pin 15 of order IC2 to reset, and interlock switches S-3a, S-3b, S-3c, S-3d, S-3e, and S-3f are contacts G, H, I, J, If the high signal pulse is output from the output terminal pin9 of the timer IC4 when the signal is located at K and L), the relay RL1 is operated through the diode D2 to operate the interphone circuit 1 interlock switch S-4a, Position the switch (S-4d) of the hook (S-4d) of the S-4b, S-4c, and the contact (M, N, O) and the contact (P) position. To switch to the position of contact (M ', N', O ') and contact (P'), and hook switch (HS.1 HS.2) at contact (S, T) Interphone combined telephone, characterized in that the interconnection is configured to be hooked on when switching to the position of ').

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