KR910001084Y1 - Multifrequency remote control adaptor - Google Patents

Abstract

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Description

Compound Sound Dual Frequency Remote Control Adapter

1 is an exploded perspective view of the present invention.

2 is an operating waveform diagram of each part of FIG.

* Explanation of symbols for main parts of the drawings

ICI: Tone / Pulse Generator IC2: Regulator

IC3: CALL PROCESS DETECTOR

IC4-IC9: Inverter buffer IC10: JK flip-flop

TR1-TR4: Transistor D1-D6: Diode

R1-R11: register C1-C3: capacitor

SW1: Hook switch XTAL1,2: Oscillator

LED1: Light emitting diode MC: Microphone

SP: Speaker 100: Phone circuit part

The present invention relates to a DTMF remote control adapter, and in particular, a mechanical switching station in a system for remote control (TELE CONTROL) using various public telephone networks in the fields of home automation (HA) and office automation (OA). It also relates to a DTMF remote control adapter that enables remote control over telephone lines in these installed areas.

Conventionally, in order to use the remote control function of HA, the remote operation area had to be a tone dialing area using a DTUAL (DUAL TONE MULTI FREQUENCY) method, that is, an area corresponding to an electronic switching center.

Therefore, existing telephones are sold only to tone dials or pulse dials for the region, or both tone pulse phones are available, but the selection switch is not easy to operate, and it is not possible to automatically switch to tone mode after dialing. This has become difficult in reality.

Therefore, the object of the present invention is to solve the above-mentioned drawbacks, and in the mechanical telephone use area, the HA receiver first performs pulse dialing for remote control purposes and transmits a bell signal to the other party before receiving the other party's reception. It automatically switches to the tone dialing mode at this time, and when the dial board is pressed, it can generate a DTMF signal, which is a tone signal, to provide a DTMF remote control adapter that enables remote control of HA even in the area of mechanical telephone use. Is in.

The present invention for achieving the above object is interposed by a hook switch from a telephone line, connected to a rectifying circuit composed of a diode, and configured to be connected to a tone signal terminal and a pulse signal terminal of a tone / pulse generator by transistors. The first pulse dialing is performed according to the output of the pulse signal terminal, and a predetermined ringback tone is inputted from the telephone line through the capacitor to the signal input terminal of the call progress detector circuit, so that the inverter buffer, resistor and diode are connected in series. And a logic signal in a logic " low " state only during a first period of at least one cycle of the ringback tone through a resistor and a capacitor which are an inverter buffer and a time constant circuit, while the output of the call progress detector circuit is connected in series. Inverter buffers, resistors, diodes and inverter buffers and resistors and capacitors Generating a logic signal in a logic " high " state for a second period longer than the first period, wherein the logic signal output according to the first period is supplied to the clock input of the JK flip-flop and also according to the second period. Is applied to the J input terminal to detect the reception state of the opponent after the periodic output of the call progress detector is stopped, and the output of the JK flip-flop, which is the detection output, is a control function state by driving a light emitting diode through a resistor. On the other hand, the inverting output is applied to the control signal terminal of the tone / pulse generator to change the state to the tone mode, so that the composite sound dual frequency signal, which is a tone signal, can be transmitted.

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

1 is a circuit diagram of the present invention, which is interrupted by a hook switch SW1 from a telephone line and connected to a rectifying circuit composed of diodes D1-D4 and ton / pulse generator IC1 by transistors TR1-TR3. The first pulse dialing is performed according to the output of the pulse signal terminal, and a predetermined ringback tone is transmitted from the telephone line through the capacitor C1 to the call progress detector (C1). Inverter buffer IC4 (IC5), resistor R7, diode D5 and inverter buffer IC7 connected to the signal input terminal SIG of IC3) and resistor R9 which is a time constant circuit. And a logic signal in a logic " low " state only during the first period? 2 of one or more cycles of the ringback tone through the capacitor C2, while the output DET of the call progress detector circuit IC3 Inverter buffer (IC4) (IC6) and resistor (T8) connected in series The logic signal is in a logic "high" state for a second period τ2 longer than the first period through the diode D6 and the inverter buffer IC8 (IC9), the resistor R10 and the capacitor C3, which are time constant circuits. Is generated, and the logic signal output according to the second period is applied to the J input terminal so as to detect a reception state of the counterpart after the cycle output (DET) of the call progress detector is stopped, and the detection output is the JK flip. The output Q of the flop IC10 is configured to drive the light emitting diode LED1 through the resistor R6 to indicate that it is in a control function while the inverted output Q controls the tone / pulse generator IC1. Is applied to the signal terminal (CONT) to convert the state to the tone mode is configured to transmit a complex sound dual frequency signal, which is a tone signal.

Waveforms of Figs. 2A-E are operating waveform diagrams of the respective parts in the first diagram.

Therefore, looking at the operation relationship and the effect of the present invention as described above are as follows.

In FIG. 1, when a telephone line is connected to terminal R and T, and SW1, which is a hook switch or a general switch, is turned on, the telephone line is rectified by a bridge circuit constituted by diodes D1 to D4 so that the polarity is reversed. It is fixed. When the dial board is pressed for remote control operation, the control terminal (CONT) input of IC1, a tone / pulse generator, is initially logic "high" so that the output of the pulse stage outputs a pulse signal in the "high" state. This signal is input through the resistor R4 to the base of the transistor TR2 to interrupt the current flowing from the emitter of the transistor to the base to transmit a pulse signal to the telephone line. Now, when the other party's telephone number is transmitted as a pulse signal, the other party's ring back tone signal is input to the telephone line. This ringback tone signal is inputted through the bridge circuit of diodes D1-D4 through the capacitor C1 to the signal input terminal SIG of IC3, the call progress detector, to detect the corresponding frequency of ringback tone 305-640HZ. Each time, the output "DET" outputs a logic "high" signal.

Now when the other party picks up the receiver or the HA system is in the receiving state, the intermittent output at the DET output stops "low", which requires switching to tone mode. Accordingly, the output waveforms of the ring back tone detection circuit IC3 and the input / output waveforms of the inverter buffers IC7 and IC8 are shown in FIG. In other words, when the DET output by the ring back tone is equal to the waveform (a), the DET output becomes "low". At this time, the previous periodic output is driven into the buffer by IC4 and IC5, respectively, and generates charge / discharge operation by resistor R9 and capacitor C2 via diode D5. Here, when the charge / discharge cycles of the resistor R9 and the capacitor C2 are τ1, τ1 is greater than the duty cycles T1 and T2 of the DET output so that the output inverted by IC7 is the same as the waveform (c). You can do that. Similarly, the DET output is driven by the inverter buffers IC4 and IC6, and the charge / discharge operation occurs by the resistor R10 and the capacitor C3 via the resistor R8 and the diode D6. τ2 may be greater than τ1 so that the output of the inverter buffer IC9 is longer than the output of IC7 as shown by the waveform (e). That is, the output of the inverter buffer IC9 remains “high” until a little later than the rising edge of IC7, so it is input to the terminal J of the JK flip-flop IC10 and is in the “high” state of this waveform. Since the rising edge output of the inverter buffer IC7 is input to the terminal CK of the IC10, the output Q of the IC10 is inverted to "low" in the "high" state so that the control (CONT) input of the tone pulse generator (I C1) is low. The high output of the output Q indicates that the transistor TR4 turns on the light emitting diode LED1 through the resistor R6 to indicate that it is in a controllable state. TR3) and (TR1), and are transmitted to the telephone line via diodes D1-D4.

As described above, the present invention enables remote operation using a telephone line, which has not been possible in the past, even in a corresponding area where a mechanical switching center is installed. Therefore, it is possible to increase the practical utility value of the HA system through this, if the present invention is applied to the telephone, the HA system will be able to obtain the effect that the ease of dissemination of the HA system is easily removed.

Claims (3)

In the composite sound dual frequency remote control adapter for home automation, it is interrupted by a hook switch (SW1) from a telephone line, connected to a rectifying circuit composed of diodes (D1-D4), and connected by a transistor (TR1-TR3). It is configured to be connected to the tone signal terminal and the pulse signal terminal of the pulse generator IC1, and the first pulse dialing is performed according to the output of the pulse signal terminal, and a predetermined ringback tone is passed through the capacitor C1 from the telephone line. Inverter buffers IC4 (IC5), resistors R7, diodes D5, inverter buffers IC7 and time constant circuits connected in series by being configured to be input to the signal input terminal SIG of the logless detector IC3. The resistor R9 and the capacitor C2 generate a logic signal in a logic " low " state only during the first period τ1 of one or more cycles of the ringback tone, while in the call progress detector circuit IC3. Output (DET) is serial Through the inverter buffer IC4 (IC6), resistor R8, diode D6, and inverter buffer IC8 (IC9) and the resistor R10 and capacitor C3 which are time constant circuits, Generates a logic signal in a logic " high " state for a long second period < RTI ID = 0.0 > (2) < / RTI > and the logic signal output according to the first period is applied to the clock input terminal CK of the JK flip-flop IC10 and The logic signal output is applied to the J input terminal and configured to detect the reception state of the counterpart after the periodic output DET of the call progress detector stops, and the output Q state of the JK flip-flop IC10 serving as the detection output. The inverting output Q is applied to the control signal terminal CONT of the tone / pulse generator IC1 to switch the state to the tone mode so as to display a controllable state in response to the control signal. Compound sound dual frequency signal characterized by being configured to transmit a signal A dual sound dual frequency remote control adapter circuit, characterized in that the call is configured to be transmitted. The method of claim 1, wherein the call circuit 110 and the amplifier 120 is a compound sound double, characterized in that it comprises a call circuit unit 100 to form an acoustic coupler by acoustic coupling through the speaker (SP) and the microphone (MC) Frequency remote control adapter circuit. 2. The diode LED1 of claim 1, wherein the output Q of the JK flip-flop IC10 is configured to be applied to the base of the transistor TR4 through the resistor R6 and to correspond to an operating state of the transistor TR4. And dual conduction remote control adapter circuit, characterized in that to configure the conduction to display the control function status.