KR900005359B1 - Room-monitoring system by sonic chips - Google Patents

Abstract

The room monitoring function in the automatic answering telephone is for listening the room state like children sleep or play through a microphone placed at the telephone. The voice analysis/synthesis chip (60) stores/provides the incoming/outgoing message whose data is read/writed in a memory (80). The circuit includes a DTMF receiver (20) converting the DTMF signal to the digital data.

Description

Room Monitoring Using Voice Synthesis Chip

1 is a circuit diagram according to the present invention.

2 is a flow chart in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: line interface 20: DTMF receiver

30: microprocessor 40: call circuit

50: speaker 60: voice synthesis chip

70,90,100: Analog switch 80: Memory

110: microphone

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for implementing room monitering in an answering phone, and more particularly, to a method for implementing room monitoring using a voice synthesis chip.

With the development of telephones, automatic answering telephones with remote control functions are being spread in the market.

The answering machine described above has various remote functions. For example, it has a function of recording a message from a remote place, checking a message left behind by a third party, a room monitor function, and other functions. Among the functions of the room monitor, the user can operate his own answering machine through an external telephone and monitor the status of the room as a microphone of the activated answering machine. Say.

For example, a child may go to sleep in the room for a while, whether or not the child has woken up, or nobody is in the absence of the function to monitor the state of the room while going out.

The conventional circuit for performing a room monitor function in an answering machine using a voice analysis chip (synthesis chip) performed the above function by using a separate hardware. That is, a speakerphone function chip having a speakerphone function and an amplifier for amplifying a voice signal of the speakerphone chip were separately required. Therefore, there is a problem that the cost of the answering machine when the room monitor is performed. Accordingly, an object of the present invention is to provide a method for implementing room monitoring by adding a predetermined switching circuit and software to an answering machine using a voice synthesis chip.

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

1 is a circuit diagram according to the present invention, which detects and outputs a ring signal input from a telephone line, forms a trunk line loop under a predetermined control, and interfaces an analog signal with the line interface 10, and the line interface ( The DTMF receiver 20 converts and outputs the DTMF signal received from the analog signal outputted from 10) into digital digital, and outputs a trunk line loop control signal by ring detection of the line interface 10 to the DTMF digit received. A microprocessor (hereinafter referred to as MPU) 30 for controlling the system, a communication circuit 40 for amplifying and outputting an output of the line interface 10 or an amplifying input audio signal current, and the communication circuit. A speaker 50 for converting the output of the 40 into an audible sound, and the lead and the light control signal and the command data of the MPU 30 A voice synthesis chip 60 which digitalizes the sex signal and outputs it with a predetermined address, amplifies and outputs the voice signal, converts the digitalized voice data into an analog voice signal, and outputs smearing filtering; A first analog switch connected between the analog signal output terminal of 60 and the analog output line of the line interface 10 to control the output of the audio signal of the speech synthesis chip 60 by a predetermined control signal ( 70, a memory 80 for writing and reading data by the address and control of the voice synthesis chip 60, the signal output of the control terminal of the voice synthesis chip 60, and the control signal of the memory 80. A second analog switch 90 connected between input terminals and switched by control of the MPU 30, a microphone 110 for converting a voice signal into an electrical signal, and an output of the microphone 110 for MPU ( By the control of 30) It consists of a third analog switch for switching.

2 is a flow chart of a room monitor function according to the present invention, which searches whether a received DTMF digit is a room monitoring code and performs a predetermined switching operation when the DTMF received digit is a room monitoring code, so that only the voice signal in the room is a line interface ( 10 is a flowchart for performing a switching operation to be output through an analog line, specifying a start address and a stop address of the voice synthesis chip 60, and outputting a voice signal while the designated address is sequentially assigned.

1 and 2 will be described below with respect to room monitoring according to the present invention. Now, when the user dials the telephone number of the home from the remote side to monitor the condition of the room with the answering machine installed in the home, the ring signal of the telephone line (1a) or 1b or 20Hz is 1 second and 2 seconds Signal is input. At this time, the line interface 10 detects a ring signal input through the telephone lines 1a and 1b and outputs it to the line 3.

When the ring detection signal carried on the line 3 reaches a predetermined number of times when the counter in the MPU 30 counts, the MPU 30 outputs a trunk line loop control signal through the line 4, and a line interface. Numeral 10 forms a loop in a hook-off state under the control of the MPU 30.

As described above, when the user remotely recognizes that the loop is formed and dials the room monitoring code with the DTMF signal, the line interface 10 outputs the analog lines 2a and 2b. The DTMF analog signal loaded on the analog line 3a is input to the analog input terminal AIN of the DTMF receiver 20. As a result, the DTMF receiver 20 converts the input of the DTMF analog signal into digital data. Input is made to the input ports I2-I5 of the MPU 30.

In this case, the MPU 30 searches whether the digit data input in the process of FIG. 2A is the room monitor code. When the predetermined data is continuously determined as the room monitor code data, the MPU 30 determines in the process of FIG. The control signal of the "high" state is output to the output port O2, and the first analog switch 70 is "on" switched from the "off" state. Therefore, the voice signal output terminal OUT of the voice synthesis chip 60 is connected to the analog line 2b.

As described above, the MPU 30 having the first analog switch 70 "on" switched to the control signal of "low" and "high" to the output ports O3 and O4 in the process of FIG. Outputs the second analog switch 90 to " off " and at the same time the third analog switch 100 is ounce-shifted.

At this time, by the off switching 90 of the second analog switch 90, the outgoing message of the user or the incoming message data recorded by a third party (In caming message) is controlled by the voice synthesis chip 60. The control line 7 of the memory 80 to be recorded or read by is opened and is kept in the state of storing the data currently stored, and the voice signal generated in the room is an electrical signal by the microphone 110. Is converted to and input to the audio signal input terminal AIN of the speech synthesis chip 60.

As described above, the MPU 30 which switches all of the first, second, and third analog switches 70, 90, and 100 transmits a recording command through the data input / output port (DI / O). And start address and stop address data of the memory space full address of the memory 80 in the memory allowable range of the voice synthesis chip 60, and then the second address (E) (F). In the process).

The recording command data and the start address and stop address data of the memory 80 which are sequentially output in the process of FIG. 2 (D) (E) (F) are the CPU (Central Processor Unit) interface of the voice synthesis chip 60. Input to the circuit respectively. At this time, the voice synthesis chip 60 which inputs the recording command and the memory space address data of the memory 80 from the MPU 30 amplifies the signal input to the analog signal input terminal AIN, and ADM (Adaptive) Delta Modulation) modulates and quantizes the MPU 30 to be input to the memory 80 together with an increment address and a predetermined write control signal by an address command designated by the MPU 30 to convert the quantized voice data into an analog signal and smooth it. Filter and output to the analog audio signal output terminal (OUT).

The signal output to the voice synthesis chip 60 is loaded on the analog line 2b through the first analog switch 70 switched on in line 11 so that the remote user can use the line interface 10. ), And the status of the home plan is monitored through an exchanger not shown.

On the other hand, the memory 80 for inputting the voice data output simultaneously with the increment address from the voice synthesis chip 60 switches the lead / write control signal line 7 of the voice synthesis chip 60 under the control of the MPU 30. The second analog switch 90 keeps the " off " state so that the audio data in the room monitoring state is not recorded.

Therefore, when the room monitoring command is input from the remote place, the voice signal in the room by the microphone 110 is transmitted to the remote user through the voice synthesis chip 60 under the control of the MPU 30.

While the room monitoring is in operation as described above, the MPU 30 determines whether the address has been stopped because the stop command input or the voice synthesis chip 60 is increased from the start address to the stop address in the process of FIG. When the address stop data is input from the stop command or the voice synthesis chip 60 from 20, the function is stopped.

As described above, the present invention can implement a room monitoring function by adding a simple switch and software to an answering machine using a voice synthesis chip, thereby improving the function of the system and at the same time, satisfying the user's function. There is this.

Claims (1)

A method of implementing room monitoring using a voice synthesis chip, comprising: a line interface (10) for detecting and outputting a ring signal input from a telephone line and forming a trunk line loop through a predetermined control and interfacing analog signals; DTMF receiver 20 which converts and outputs DTMF signals received from analog signals output from interface 10 into digital digital, and DTMF received while simultaneously outputting trunk line loop control signals by ring detection of the line interface 10. A microprocessor 30 for controlling the system by digits, a communication circuit 40 for amplifying and outputting an output of the line interface 10 or an amplifying input voice signal current, and an output of the communication circuit 40 The speaker 50 converts to an audible sound, and the lead, the write control signal and the command data of the microprocessor 30 are inputted. A voice synthesis chip 60 which digitalizes the voice signal to be output together with a predetermined address, amplifies and outputs the voice signal, converts the digitalized voice data into an analog voice signal, and outputs smearing filtering; It is connected between the analog signal output terminal of the chip 60 and the analog output line of the line interface 10 to control the output of the audio signal of the voice synthesis chip 60 by the control signal of the microprocessor 30. A first analog switch 70, a memory 80 for writing and reading data under the address and control of the voice synthesis chip 60, a signal output from the control terminal of the voice synthesis chip 60, A second analog switch 90 connected between control signal input terminals of the memory 80 and switched by the control of the microprocessor 30, and a microphone 110 for converting a voice signal into an electrical signal; ) And a third analog switch 100 for switching the output of the microphone 110 under the control of the microprocessor 30, and is input through the line interface 10 to be input by the DTMF receiver 20. A first step of searching whether the converted output data is a room monitoring command code, and a signal electrically converted by the microphone 110 determines that the voice monitoring chip 60 is the room monitoring code in the first step. A second step of outputting through the line interface 10 through the second step, a third step of sequentially writing the start address and the stop address of the recording command and the memory space on the voice synthesis chip 60, and the DTMF; Search whether the room monitoring command is input from the receiver to stop the room monitoring operation or the sequential address of the voice synthesis chip 60 when the input is stopped. Method characterized by made of an a fourth step of stopping the stop when W function.

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