KR200171042Y1 - Trs terminal equipped with recording and playing speech - Google Patents

Abstract

The present invention relates to a mobile terminal of a frequency common communication system (TRS), and more particularly, to an automatic voice recording and reproducing function as an additional function of the terminal, including a radio frequency unit, an audio processing unit, a central processing unit, A frequency common communication terminal consisting of a keypad and a speaker, comprising: an analog / digital converter for converting an analog incoming message signal applied from the audio processor into a digital signal, and the analog / digital converter by a control signal of the central processing unit; A voice memory for recording or reading the output digital signal, a digital / analog converter for converting the digital signal output from the voice memory into an analog signal, and controlling the central processing unit to record and reproduce the voice signal in the voice memory. Equipped with record and play buttons And a voice recording / playback function configured to include a pad, and when the user is in a state in which the user cannot immediately receive a caller's message using a frequency common communication terminal, the received voice signal is transferred to the speaker. When the user recovers a state in which the user can receive the frequency common communication terminal without storing it immediately, the user can check the signal stored in the voice memory through the speaker.

Description

Frequency common communication terminal with voice recording / playback function

The present invention relates to a mobile terminal of a trunked radio system (TRS), and more particularly, to an automatic voice recording and reproducing function as an additional function of the terminal.

The common frequency communication system uses a single radio frequency as a common communication channel by a plurality of mobile terminals. In general, the transmit and receive frequencies are the same. In the case of transmission, a push-to-talk (PTT) switch is used. It is always in the waiting state for reception, and when it transmits from the other calling station, it can receive immediately without a call signal by an incoming bell. Each mobile terminal is assigned a unique ID (ID) number and controlled by the system so that each terminal can be individually called or collectively called, and the mobile terminal can be used while being carried in a small size. Low-power portable, fixed to the vehicle, using the vehicle's power supply, and using a high-power, fixed and hand free kit or booster, which is used as a vehicle in the vehicle. Apart from this, there is a form used as a portable.

Hereinafter, a common frequency communication terminal according to the prior art will be described with reference to the accompanying drawings.

1 is a functional block diagram of a frequency common communication terminal according to the prior art.

Referring to the accompanying drawings, the conventional frequency communication terminal according to the prior art includes an antenna (1) for radiating or absorbing a radio frequency signal;

A radio frequency unit (2) connected to the antenna (1) to perform frequency conversion, modulation, and demodulation of a signal;

An audio processor (3) connected to the radio frequency unit (2) for filtering, amplifying, and so on a signal;

A speaker (4) connected to the audio processor (3) to convert an electrical signal into a sound signal;

A keypad 7 in which a key button is input by a user;

A microphone 5 connected to the audio processor 3 and converting a voice signal into an electrical signal;

A central processing unit (6) connected to the audio processing unit (3) and the keypad (7) for processing data input from the keypad (7) and controlling the operation of the audio processing unit (3);

It is connected to the central processing unit 6, and receives a control signal, and consists of a liquid crystal display (LCD: Liquid Crystal Display) (8) for displaying information on the terminal and the current status information of the terminal used by the caller do.

Hereinafter, a common frequency communication terminal according to the related art having the above configuration will be described in detail with reference to the accompanying drawings.

The radio signal of the frequency common communication system (TRS) received through the antenna 1 is output to the speaker 4 via the radio frequency unit 2 and the audio processing unit 3, and inputted through the microphone 5. The audio signal is radiated from the antenna 1 via the audio processor 3 and the radio frequency unit 2.

Unlike a mobile phone of a cellular type mobile communication system, the frequency common communication system (TRS) has a function of group call by group call as well as one-to-one call. When the group to which the group belongs is called from one call terminal, the caller Immediately without driving the incoming ring signal to call, the caller's voice is immediately output through the speaker 4 of the called terminals belonging to the called group.

According to the frequency common communication terminal according to the prior art, even in the case of a group call, even when the called terminal cannot receive the call, the caller's voice is output through the speaker. There was a problem in that they could not hear and, if necessary, received the message through a private call with the caller.

The present invention has a voice recording unit comprising a voice memory of a digital / analog converter and an analog / digital converter in a common frequency communication terminal, and the voice recorder unit can not be immediately heard by using a function button on the keypad. It is an object of the present invention to provide a frequency common communication terminal having a voice recording / reproducing function capable of recording a caller's message and later reproducing the recorded message.

The present invention devised to achieve the above object is, in the frequency common communication terminal consisting of a radio frequency unit, an audio processing unit, a central processing unit, a keypad, a speaker, the analog incoming message signal applied from the audio processing unit An analog / digital converter for converting a signal, a voice memory for recording or reading a digital signal output from the analog / digital converter by a control signal of the central processing unit, and converting a digital signal output from the voice memory into an analog signal And a digital recording device, and a voice recording / playing function including a keypad having a recording button and a playback button for controlling the central processing unit to record and play back a voice signal in the voice memory. It features a terminal.

1 is a functional block diagram of a frequency common communication terminal according to the prior art,

2 is a functional block diagram of a frequency common communication terminal according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2, 12: radio frequency unit 3, 13: audio processing unit

4, 14: speaker 5, 15: microphone

6, 16: central processing unit 7, 31: keypad

21: voice recording unit 22: analog / digital converter

23: digital to analog converter 32, 33: function button

Hereinafter, with reference to the accompanying drawings will be described a frequency common communication terminal having a voice recording / playback function according to the present invention.

2 is a functional block diagram of a frequency common communication terminal equipped with a voice recording / playback function according to an embodiment of the present invention.

Referring to the accompanying drawings, a frequency common communication terminal equipped with a voice recording / reproducing function according to the present invention, a radio frequency (RF) communication signal in the space (Radiation) or transmit (TX) or receive (RX) An antenna 11;

A radio frequency unit 12 connected to the antenna 11 to perform frequency conversion, modulation / demodulation, etc. of the data signal;

An audio processor (13) for filtering, removing an unnecessary portion of the signal applied from the radio frequency unit (12), amplifying the level of the signal, and the like;

A microphone 15 for converting a voice signal applied by a terminal user into an electrical signal and applying the same to the audio processor 13;

An analog / digital converter 22 connected to the audio processor 13 for converting an analog voice signal received in a voice recording mode into a digital voice signal; A voice memory 24 for storing or recording a digital voice signal applied from the analog / digital converter 22 in a voice recording mode by a control signal and outputting a digital voice signal stored or recorded by a control signal in a reproducing mode. ; A voice recording section 21 comprising a digital-to-analog converter 23 for converting a digital voice signal applied from the voice memory 24 in a reproduction mode into an analog voice signal;

It is connected to the digital / analog converter 23 of the audio processor 13 and the voice recording unit 21. In the normal mode, the electrical voice signal applied from the audio processor 13 is converted into the acoustic wave sound. A speaker 14 for converting an electric voice signal applied from the digital-to-analog converter 23 of the voice recording unit 21 into an acoustic wave sound;

A keypad 31 for making a user's mode selection by including a voice recording function button 32 for switching the frequency common communication terminal to a voice recording mode and a voice playback function button 33 for switching to a playback mode;

The voice memory 24, the audio processor 13, and the keypad 31 of the voice recording unit 21 are connected to process dialing and mode selection data input from the keypad 31, and the voice memory ( A central processing unit (16) for controlling the processing of the transmission and reception signal processing of the audio processing unit (13) by controlling the recording and recording the voice data and the recorded voice data;

It is connected to the central processing unit 16 is composed of a liquid crystal display screen 18 to display and confirm the information about the call terminal and the current status information of the terminal.

In the normal mode in which the voice recording button 32 and the voice reproducing button 33 do not operate, the voice recording unit 21 does not operate by operating in the same manner as the conventional frequency common communication terminal.

The voice recording and reproducing operation of the frequency common communication terminal according to the present invention having the above-described configuration will be described in detail with reference to the accompanying drawings.

The terminal user in a state in which communication or reception is not possible using the frequency common communication terminal presses the voice recording button 32 of the keypad 31, and the central processing unit 16 receiving the signal of the button 32 receives the signal. Switch the terminal to voice recording mode.

In the voice recording mode, a signal received through the antenna 11 and the radio frequency unit 12 is applied to the audio processor 13, and the audio processor 13 receives the caller's call signal. The call signal is notified to the voice recording unit 21, and at the same time, the control signal is received from the central processing unit 16 and the incoming message signal whose output level is adjusted is applied to the voice recording unit 21.

The voice recording unit 21 converts the analog voice signal applied from the audio processor 13 into the digital voice signal after being applied by the analog / digital converter 22 and outputs the digital voice signal to the voice memory 24.

The voice memory 24 receiving the address signal and the recording control signal from the central processing unit 16 writes the digital voice signal received from the analog-to-digital converter 22 to the address by the address signal, or It is stored and displayed on the liquid crystal display 18 to indicate that there is a recorded message.

In addition, when the terminal user recovers to the reception state, the terminal enters the voice playback mode by inputting the voice playback button 33 of the keypad 31.

That is, the central processing unit 16, which has received the button 33 signal, enters a voice reproduction mode, and applies an address signal and a read signal in which a voice signal to be reproduced is recorded to the voice memory 24, The digital voice signal recorded at the corresponding address is read and output to the digital-to-analog converter 23.

The digital-to-analog converter 23 converts the applied digital voice signal into an analog voice signal, and then applies the speaker 14 to convert the digital voice signal into an acoustic wave sound that can be heard by the human ear.

If the caller's call message arrives again while playing the message recorded in the voice memory 24 in the voice playback mode, the central processing unit 16 temporarily switches to the voice recording mode and receives the received message. Write to memory 24.

The voice memory 24 uses a dual port memory capable of reading and writing at the same time.

Further, in the normal mode that the terminal user can immediately receive, the audio processing unit 13 is in the normal mode of the central processing unit 16 by releasing the function of the voice recording button 32 by the user. After receiving a control signal, the signal applied from the radio frequency unit 12 is audio-processed and then output to the speaker 14.

Therefore, when the caller's message is not immediately received using the frequency common communication terminal, the user can check the contents of the message when necessary by switching to the voice recording mode.

The present invention as described above, when the user is in a state that can not receive the caller's message immediately by using the frequency common communication terminal, by storing the received voice signal in the voice memory without immediately outputting to the speaker, In the case of recovering the state which can be received by the common frequency communication terminal, there is an effect of confirming the signal stored in the voice memory through the speaker.

Claims (1)

A frequency common communication terminal comprising a radio frequency unit, an audio processing unit, a central processing unit, a keypad, and a speaker, comprising: an analog / digital converter for converting an analog incoming message signal applied from the audio processing unit into a digital signal; A voice memory for recording or reading a digital signal output from the analog / digital converter by a control signal, a digital / analog converter for converting a digital signal output from the voice memory into an analog signal, and controlling the central processing unit to control the central processor. And a keypad having a recording button and a playback button for recording and playing back a voice signal in a voice memory.