KR960007586B1 - Remote synchronizing apparatus of time divison type - Google Patents

Abstract

a data modem 50 connected to the output of a high pass filter 40 with its transmission data TxData and to the input of the high pass filter 40 with its reception data RxData, and having a low pass filter 51; a data controller 60 connected to the data modem 50 with its transmission and reception outputs TXData and RXData, and having an 8-bit microcomputer for controlling the transmission and reception outputs TXData and RXData; a setting section 70 having a plurality of mode setting dip switches SW1-SW7 connected to the same number of photocouplers PC0.0-PC0.7; and a remote synchronizing device 100 associated with a TR drive 80 which photocouplers PC1.1-PC1.7 for driving the transmission data connected to the same number of outputs out1-out7.

Description

Time-division remote synchronization device using voice frequency band in private exchange with call path

1 is an overall system configuration of the present invention.

2 is a block diagram showing a schematic configuration of the present invention.

3 is a detailed view of the data modem of FIG.

4 is a detailed view of a second data control circuit.

5 is a time-division pulse waveform diagram of the microcomputer by the dip switch for mode setting.

* Explanation of symbols for main parts of the drawings

10,20: Hybrid circuit 30,40: High pass filter

50: data modem 60: data controller

70: setting unit 100: remote synchronization device

A: Main device side B: Terminal device side

The present invention relates to a remote synchronization device in which a call path is configured in various modes in response to a call and a call between a main device side subscriber and a remote terminal subscriber side in a private switching system having a call path.

Specifically, a call mode for telephone or broadcasting can be simultaneously or partially selected between subscribers by transmitting or receiving a time-division remote control signal on the upper or lower band of 300-3400HZ, which is a voice frequency band, on two-line communication paths. The present invention relates to a time division remote synchronizing device using a voice frequency band.

The modern society is being subdivided into various fields and at the same time, it is further subdivided into each unit and divided into headquarters and branches, and these headquarters and branches are distributed over a wide range of areas, so that communication facilities, which are administrative means of communication, are rapidly developed and geographically isolated. By effectively connecting spaces, it enables fast information transfer and interchange.

On the other hand, in a conventional private exchange facility, it is possible to selectively configure a 1: 1 or multi-party communication path, but it is used in a limited area, such as in a certain building, and thus can not be installed in a wide area. In addition, there is a disadvantage in that it is not possible to carry out the command or the remote control of the monitor through the partial broadcast.

In order to solve the various limitations of the prior art as described above, the present applicant is usually used as an MFC type electronic exchange, and when necessary, a remote control for constructing a partial or simultaneous telephone call path or controlling a terminal side through partial or simultaneous broadcasting. The device (patent 48382) was provided.

However, in particular in the case of heading 47.382, part, any telephone or room.

A call path is formed by transmitting / receiving a switch to the transmission mode through the call path of the DTMF signal between the main device side and the remote terminal device. Unlike a 4-wire telephone call path, a call of a remote control terminal without a separate signal line is used. After the DTMF signal is sent through the path, the terminal side confirms that the terminal side responds and sends the return tone again, and then configures the communication path. In this case, the terminal cannot call the main device side, and if the terminal side is busy, the call is made after the call transfer and thus there is a problem in that the usage efficiency is reduced by the call.

Therefore, the present applicant has been devised to solve all the problems of the prior art and the prior application has the following purposes.

The present invention consists of a main device and a terminal device, and the time division mode switching signal of the time division mode for the selective operation of 1: 1 or partial and Japanese telephone or broadcast mode between the main subscriber and the subscriber subscriber side. It is a main object of the present invention to provide a remote synchronization device that can make a telephone call or make a command through broadcast by selectively calling a terminal subscriber (or a host device subscriber) by forming and transmitting a call path.

In addition to the above object, the present invention transmits and transmits a mode switching signal to a voice frequency in a call path, so that the call can be made during a call, so that the call time can be minimized, and the call is possible between the main device and the terminal device. It is to provide a remote synchronization device that can be improved.

In order to implement the present invention as described above, a switch capable of selecting a mode on both the main device side and the terminal device side is configured to transmit and receive different time-division pulses on the upper and lower bands of voice frequencies according to the operation state of the switch. By means of the configuration so that the remote control can be made to call the terminal in the host device or claim value in the terminal.

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

In the present invention, as shown in FIG. 1, the main unit side (A) and the terminal unit side (B) are joined through a dedicated telephone station preference, and the number of line circuit lines, the main unit side subscriber, and the terminal unit side subscriber is not constant. It is basically composed of many.

The main device side A and the terminal device side B include telephones, broadcasts, amplifiers, monitors, and the like as in the prior art, and include a function card or a function card for simultaneous or partial calls.

This is not a detailed description of various sources other than the source (patent 48382) technology.

Examine the specific technical configuration.

FIG. 2 is a block diagram showing a schematic configuration of the present invention, wherein a hybrid circuit is formed by combining a tip and a ring to separate or combine a transmission / reception signal between a line terminal and a telephone T. 10) 20 and a high pass filter 30, 40 for removing noise between the hybrid circuit 10, 20, the transmission data (TxData) at the output of the high pass filter 40 An output is connected to the input of the high pass filter (30) and a receive data (RxData) input is connected to the data modem (50) including a low pass filter (51), and a transmission output (TxD) to the data modem (50) A data controller 60 made up of an 8-bit microcomputer and the data controller 60 are configured such that an output RxD is connected and the transmission data TxData and the reception data RxData are controlled by a control output RXEN. I / O port to be inputted to the plurality of mode (P _0.0 ~ _0.7 P) Adjustment DIP switch (SW1 ~ SW7) has a setting section 70, which is connected to the photo coupler (PC _0.0 ~ PC _0.7) of equal numbers, I / O port that is configured in the data controller _{(60) (P 1.0 ~ P} 1.7 The photocoupler (PC _1.1 ~ PC _1.7 ) for driving the received data to be output to the) constitutes a remote synchronization device 100 so that the TR drive 80 connected to the same number of output terminals (out1 ~ out7) can be combined and driven. .

It will be described in more detail the effect of the present invention constituting the configuration as described above.

The remote synchronization device 100 of the present invention is formed in a line terminal on a plurality of main device side (A) subscribers and remote terminal side (B) subscribers.

The 8-bit microcomputer included in the data controller 60 of the remote synchronization device 100 generates a pulse having a constant duty cycle every 500 ms as the synchronization signal SS.

On the other hand, the mode signal S1-S7 which is time-divided within every 500ms is generated in the actual state of each switch SW1-SW7.

These signals (SS, S1-S7) are transmitted in the upper and lower bands of the 300-3400HZ, which is a voice frequency band, which is typically a frequency band that minimizes the impact on the voice call. To convey.

Specifically, the synchronization signal SS is preferably set at about 3250HZ and the mode signals S1-S7 are set at about 3300HZ.

As an example, the application examples of the dip switches SW1-SW7 of the main unit side (A) remote synchronization device 100 and the terminal unit side (B) remote synchronization device 100 are described in the following table.

When the dip switch is applied as shown in the above table, a telephone, an amplifier, a monitor, etc. will be connected to the micom output terminals corresponding to the main device side and the terminal device side.

Accordingly, in FIG. 4, when the dip switch SW1 is closed, the photocoupler PC is turned on and a mode signal S1, which is a time division pulse corresponding to the dip switch, is generated to generate a transmission output TXD. The output of the data collapsing controller 60 is transmitted via the data modem 50 by transmitting the transmission data TxData on the upper band of the voice frequency as described above.

When the synchronization signal SS and the mode signal S1 are input to the terminal shaft, the terminal receives the signal input through the hybrid circuit 10 as the received data RxData of the data modem 50 and receives the output signal. RXD) to receive the output to the data controller 60 to the input terminal (RXD) to output the corresponding porter coupler (PC) of the TR drive 80 by the data controller 60, which is an 8-bit microcomputer Accordingly, the function card (telephone LOOP) connected to the output out1 is operated.

At the same time, the terminal-side microcomputer carries the confirmation signal corresponding to the received mode signal S1 to the main device side A. The conveyance signal RS1 is the same as the transmission path of the above-described mode signal, and description thereof will be omitted. In addition, the signals of other control modes also operate in the same manner, and thus description thereof is omitted.

On the contrary, the same is true when the terminal device side B remotely calls the main device side A. On the other hand, the microcomputer output terminals 1 through 7 of the main device side A form on-line using a call path when various devices are connected. You may.

As described above, the present invention provides a terminal (or a main apparatus) by transmitting and carrying a time division type signal wave using an upper and lower band in a voice frequency band for mutual calling in a two-wire communication line system composed of a main apparatus and a terminal apparatus. The remote subscriber can be switched to the desired mode.

Therefore, in the present invention, in the case of remotely controlling a plurality of terminal subscribers subscribed to the terminal by a call to be transferred to a certain control mode, the call time is controlled by superimposing the voice signal by transmitting and receiving the synchronization and mode signals at the voice frequency. It is a very excellent invention that can be minimized, the remote synchronization between the two sides, the call can be made during the call to maximize the use efficiency.

Claims (1)

A high hybrid circuit 10 and 20 coupled with a tip and a ring to separate or combine a transmission / reception signal between the line terminal and the telephone T, and the high hybrid circuit 10 and 20 In the high frequency filter (30, 40) to remove the noise between the output, the transmission data (TxData) output is connected to the output of the high-pass filter 40, the received data (RxData) to the input of the high-pass filter (30) A data modem 50 having an input connected and including a low pass filter 51, a transmit output TXD, a receive output RXD connected to the data modem 50, and the transmit by a control output RXEN. Data controller 60 made of 8-bit microcomputer to control data (TxData) and received data (RxData) and a plurality of inputs to be input to I / O ports (P _0.0 to P _0.7 ) configured in the data controller 60. mode DIP switch (SW1 ~ SW7) for a set being connected to a photo coupler (PC PC _0.0 ~ _0.7) of the same number Setting unit 70 and an output stage of said data controller (60) I / O ports (P _0.0 P _0.7 ~) to the port to drive the data receiving coupler (PC1.1 PC ~ _1.7) to be output that is configured in the same number Time-division method using a voice frequency band in a private exchange having a call path characterized in that the remote synchronization device 100 is configured to be coupled to drive the TR drive 80 connected to the (out1 ~ out7) Synchronizer.