KR101035730B1 - Home walkie talkie with auto squelch controller - Google Patents

Abstract

The present invention relates to a walkie-talkie, and more particularly, has an auto squelch controller that is automatically adjusted according to a noise level even if a user does not manually control an operation of a squelch unit for adjusting a noise suppression amount according to reception sensitivity. The present invention relates to a walkie-talkie radio and also displays a manual of the function key on the display or a speaker when each function key is operated to enhance the user's convenience by increasing the utilization of a plurality of function keys provided for the user's convenience. And a memory for storing the voice information of the user or the voice information input through the transmitting and receiving unit so as to reconfirm the received voice information or transmit the same to a plurality of other living radios, and stored in the memory. In case of the call signal among the voice information, the CQ call key is automatically The present invention relates to a living radio having an auto squelch controller that maximizes user convenience, such as allowing periodic repetitive transmission.

The walkie-talkie with an auto squelch controller of the present invention includes a transceiver for transmitting and receiving a signal for wireless communication, a microphone for receiving a voice for transmission, a speaker for outputting the received voice, and a plurality of user's manipulations. A living radio comprising an input unit including a function key, a display unit for displaying a radio communication state to a user, and a CPU electrically connected to the transceiver unit, the input unit, and the display unit to control the whole, wherein the receiver unit is an antenna RF amplifier for amplifying a wireless signal received through; A mixer for mixing the wireless signal amplified by the RF amplifier with a local oscillation frequency; An FM detector for extracting a voice signal from a wireless signal input through the mixer; A filter for filtering the voice signal extracted by the FM detector; A power amplifier for amplifying and outputting the voice signal filtered by the filter to a speaker; A squelch unit provided between the filter and the power amplifier to suppress noise in a voice signal transmitted; And a noise amplifier for amplifying the noise included in the voice signal extracted by the FM detector, a high pass filter for removing low frequency components of the noise amplified by the noise amplification, and an analog of noise passing through the high pass filter. An A / D converter for converting a signal into a digital signal, a comparator for extracting a level and frequency of noise converted into a digital signal in the A / D converter, and comparing the preset reference data with a reference data; And an autosquelch controller including an SQ control unit for receiving and controlling the noise suppression amount of the squelch unit accordingly.

Home Radio, Wireless Communication, Squelch, Noise, Function Key, Manual, Memory, CQ Call

Description

Household walkie talkie with auto squelch controller {FM CITIZENS BAND TRANSCEIVER}

The present invention relates to a walkie-talkie, and more particularly, has an auto squelch controller that is automatically adjusted according to a noise level even if a user does not manually control an operation of a squelch unit for adjusting a noise suppression amount according to reception sensitivity. The present invention relates to a walkie-talkie radio and also displays a manual of the function key on the display or a speaker when each function key is operated to enhance the user's convenience by increasing the utilization of a plurality of function keys provided for the user's convenience. And a memory for storing the voice information of the user or the voice information input through the transmitting and receiving unit so as to reconfirm the received voice information or transmit the same to a plurality of other living radios, and stored in the memory. In case of the call signal among the voice information, the CQ call key is automatically The present invention relates to a living radio having an auto squelch controller that maximizes user convenience, such as allowing periodic repetitive transmission.

In general, the walkie-talkie is a radio that can be easily used by general users without the permission of the radio station or the radio wave. The frequency is 27MHz, 448MHz or 462MHz, and the communication range is about approx. As it is 3km long, it is used not only by taxi drivers and club members but also by the general public for leisure activities such as hiking and fishing.

Since these radios transmit and receive radio signals directly in the radio period without relaying from the base station, noise (noise) is often introduced into the voice signals transmitted and received.

Therefore, the walkie-talkie is generally provided with a squelch to suppress the incoming noise so that the voice signal is clearly output through the speaker.

The squelch portion sacrifices the reception sensitivity of the voice signal as much as it suppresses noise. That is, as the squelch is operated to remove more noise, the voice signal with weak signal strength is also removed along with the noise, and only the voice signal with the strong signal is output.

As such, the squelch part satisfies the reception sensitivity of the voice signal by the amount of removing the noise. Therefore, the squelch must be adjusted so that more voice signals can be output to the speaker while minimizing the interference of the noise by appropriately adjusting the incoming noise.

Squelch unit provided in the conventional walkie-talkie is to adjust the amount of noise suppression by the user directly turn the volume switch.

Therefore, at that time, the user needs to manually manipulate the squelch part to remove noise, and it is not easy to adjust the squelch part properly according to the noise level. In particular, some beginners are mistaken that the radio signal is fixed when the communication signal is slightly mixed with noise. .

Therefore, a means for automatically appropriately adjusting the amount of noise suppression in the squelch part is required according to the amount of noise introduced, which is not provided in conventional radios.

In addition to the key for basic operations such as channel setting and volume (sound volume) control, there are various function keys (for example, automatic transmission termination key) for the user's convenience. Transmission time limit key, squelch sensitivity control key, compander key, etc.) are provided.

In order to know the function of these function keys, the user must read and understand the manual booklet manually, but it is troublesome and cumbersome for the user to read the manual booklet.

As such, in order to enhance the user's convenience by increasing the utilization of various function keys provided for the user's convenience in the low utilization of the manual booklet, it is necessary to make the function of each function key readily available to the user at that time. have.

However, commercial radios currently on the market do not have such means.

And now, when the user calls the other party, the voice of the same (or similar) content is continuously repeated repeatedly until the other party answers or the user gives up the other party's call. It was inconvenient for the user to send directly through the microphone.

Therefore, in order to reduce the inconvenience of the user who needs to speak the same voice repeatedly and operate the radio, a means for automatically transmitting the call voice is required. However, the conventional radio does not have such a means.

In addition, when communication is received from another counterpart while communicating with a specific counterpart, it is inevitable to be neglected by one other party, and it is also common to remember the contents exactly. In addition, if the contents are to be delivered to other parties, accurate delivery is difficult and in some cases, there is a risk of delivering distorted contents.

Therefore, there is a need to solve this problem by providing a means for storing the communication contents coming from the other party during communication and confirming them later, and for transmitting the stored contents to the other parties.

The present invention has been made to solve the above problems, an automatic squelch controller that detects the level and frequency of noise introduced into the wireless signal during radio communication and automatically adjusts the sensitivity (sleep suppression amount) of the squelch part accordingly. An object of the present invention is to provide a domestic radio.

In addition, in order to maximize the user's convenience, the function manual of the various function keys can be displayed on the screen of the display unit at the same time as the function keys are pressed or heard through a speaker, and the user's input voice information or voice information received from the other party is displayed. It is an object of the present invention to provide a living radio which is stored in a memory and outputs a voice through various function keys or transmitted to other parties, and the call signal is transmitted periodically and repeatedly.

Life radio equipped with an auto squelch controller of the present invention for achieving the above object is

A communication unit for transmitting / receiving a signal for radio communication, a microphone for receiving a voice for transmission, a speaker for outputting the received voice, and an input unit including a plurality of function keys for a user's operation, and a radio communication state. In the living radio comprising a display unit for displaying to the user, and a CPU electrically connected to the transmission and reception unit, the input unit and the display unit to control them as a whole,

Receiving unit of the transceiver

An RF amplifier for amplifying a radio signal received through an antenna;

A mixer for mixing a wireless signal amplified by the RF amplifier and a local oscillation frequency;

An FM detector for extracting a voice signal from a wireless signal input through the mixer;

A filter for filtering the voice signal extracted by the FM detector;

A power amplifier for amplifying and outputting the voice signal filtered by the filter to a speaker;

A squelch unit provided between the filter and the power amplifier to suppress noise in a voice signal transmitted; And

A noise amplifier for amplifying noise included in the voice signal extracted by the FM detector;

A high pass filter for removing low frequency components of noise amplified by the noise amplification;

An A / D converter for converting an analog signal of noise passing through the high pass filter into a digital signal;

A comparator for extracting a level and frequency of noise converted into a digital signal in the A / D converter and comparing the preset reference data with a preset reference data;

And an auto squelch controller including an SQ control unit for receiving a comparison result from the comparator and controlling the noise suppression amount of the squelch unit accordingly.

And the auto squelch controller

A noise secondary amplifier for amplifying the output noise of the high pass filter;

And a secondary filter configured to rectify and filter the output noise of the noise secondary amplifier by a double voltage, and transmit the filtered noise to the A / D converter.

When the function key of the input unit is operated, the display unit or the speaker displays a manual of the function key or guides it by voice.

The CPU is connected to a memory for recording and storing the voice information input through the microphone or the voice information received through the transceiver, the input unit is provided with a recording key for recording the voice information in the memory,

The input unit includes a recording voice selection key for selecting voice information stored in the memory, and a CQ call key (Come Quickly Call) for periodically and repeatedly transmitting the selected voice information to other living radios sharing a frequency.

The CPU is provided with a blocker to block the output of the received voice information through the speaker while the voice information is stored in the memory when the recording key is operated in the state of receiving the voice information from the other radio during the communication It is characterized by.

The present invention having the above-described configuration automatically detects the level and frequency of noise flowing into the wireless signal to which the auto squelch controller communicates, and automatically adjusts the noise suppression amount (sensitivity) of the squelch unit continuously so that the best voice signal is output to the speaker. Because it adjusts, the user does not have to adjust the squelch part and the effort to match the sensitivity of the squelch part.

Even if the user does not exactly know the function of each function key, when the function key is pressed, the function manual of the function key is displayed on the display or notified by the speaker so that the user can check it and use the function key of the desired function immediately. When the other party calls, the user repeatedly speaks the same voice to the microphone and simply presses the CQ call key without the inconvenience of manipulating the life radio. When communication is received by the other party, simply press the record key, the contents are automatically stored in the memory, it is possible to check the contents afterwards, there is a convenience that can be transmitted to other parties as it is.

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

1 is a schematic block diagram of a living radio having an auto squelch controller according to the present invention, FIG. 2 is a schematic block diagram of a receiver of a transceiver, and FIG. 3 is a schematic block diagram of a transmitter.

As shown in FIG. 1, the walkie-talkie of the present invention includes a transceiver (transmitter 110 and receiver 120), a microphone 160, a speaker 150, an input unit 140, a display unit 130, and a CPU 190. , A memory 180, and an A / D converter 170.

As shown in FIG. 2, the receiver 120 of the transceiver unit is an RF amplifier 121, a mixer 122, an FM detector 123, a filter 124, a squelch 125, a power amplifier 126, and an auto squelch. It comprises a controller 20.

The RF amplifier 121 amplifies the radio signal received through the antenna,

The mixer 122 mixes the frequency of the radio signal passing through the RF amplifier 121 with the local oscillation frequency of the oscillator of the CPU 190 to synthesize an intermediate frequency,

The FM detector 123 extracts the voice signal carried on the carrier of the radio signal passing through the mixer 123,

The filter 124 filters the voice signal extracted from the FM detector 123,

The squelch unit 125 suppresses (blocks) noise included in the voice signal passing through the filter 124,

The power amplifier 126 amplifies the voice signal passing through the squelch unit 125 and outputs it through the speaker 150.

The auto squelch controller 20 extracts and amplifies the noise included in the voice signal extracted by the FM detector 123, extracts the level and frequency of the noise, and suppresses the amount of noise suppression of the squelch 125. Sensitivity) automatically.

The auto squelch controller 20 includes a noise amplifier 21 for amplifying noise included in the voice signal extracted by the FM detector 123,

A high pass filter 22 for removing low frequency components of noise amplified by the noise amplifier 21;

A noise secondary amplifier 23 for amplifying the noise passing through the high pass filter 22 again;

A secondary filter 24 for rectifying and filtering double-voltage rectification of the noise passing through the noise secondary amplifier 23;

An A / D converter 25 for converting an analog signal of noise passing through the secondary filter 24 into a digital signal;

A comparator 26 for extracting a level and a frequency of noise converted into a digital signal by the A / D converter 25 and comparing the preset reference data with preset reference data;

The SQ control unit 27 receives the comparison result from the comparator 26 and controls the noise suppression amount (sensitivity) of the squelch unit 125 according to the result.

Amplifying the noise in the second and third order through the noise amplifier 21, the noise secondary amplifier 23, and the secondary filter 24 improves the detection of weak noise and the accuracy of the level detection. It is for.

The reference data set in the comparator 26 is set by the user through the CPU 190 and the input unit 140, and is set in various stages according to the degree of amplification.

For example, if the reference data has a size from 0V to 5V, and the step is divided into 10 steps, the first step is a state in which there is little noise introduced into the voice signal, and the squelch unit (SQ controller 27) is used. In step 125, the noise is output without being suppressed (blocked), and in step 10, the noise is so severe that it is difficult to hear the audio signal output to the speaker. It will be completely suppressed (blocked), and in the intermediate stage, the amount of noise suppression of the squelch 125 will be adjusted step by step.

In addition, the noise suppression amount of the squelch unit 125 is adjusted in consideration of the occurrence frequency of the detected noise. Sometimes, when a certain level of noise flows in, there is no effect on radio communication. Therefore, it is not necessary to adjust the amount of noise suppression of the squelch unit 125, and the schedule is fixed several times or more (eg, three times) within a predetermined time (eg, one second). It is preferable to adjust the amount of noise suppression of the squelch unit 125 only when noise above the level is detected.

As shown in FIG. 3, the transmitter 110 of the transceiver includes an input amplifier 111, a modulator 113, and an output amplifier 115.

The input amplifier 111 amplifies a voice signal input through the microphone 160, and the modulator 113 amplifies the voice signal amplified through the input amplifier 111 in a frequency of a living frequency band (CB band). The output amplifier 115 amplifies the voice signal modulated in the living frequency band and transmits the radio signal through an antenna.

The microphone 160 is a device that receives a user's voice, and is provided with a transmission button that is used to press when transmitting, and an up-down button for UP / DOWN channel.

The speaker 150 is mounted inside the main body as outputting a received voice signal, but may be separately mounted outside through a cable.

The display unit 130 and the input unit 140 are mounted so as to be exposed on the front of the main body, the display unit 130 displays a variety of information of the communication state so that the user can confirm the radio communication state, the input unit 140 ) Is composed of a plurality of function keys (a concept including a button, a rotary switch, etc.) to receive a user's operation for wireless communication and transmit it to the CPU 190 to perform a corresponding function.

The function key of the input unit 140 basically includes a power key for turning on and off a power, a volume key for adjusting a volume, a channel setting key for setting a channel, a channel memory key for mainly using a memory for a channel, and the like;

As a function key to enhance the user's convenience, when the transmission button provided in the microphone 160 is pressed, a transmission end sound (a beep sound replacing 'Roger' or 'Over' attached at the end of communication) is automatically output. RB (Roger Beep) key, TOT (Time Of Time) key which forcibly blocks transmission when transmission exceeds certain time (communication should be done within 3 minutes at one time by the Ministry of Information and Communication). TSQ key to suppress and communicate with only the other party who has been promised (communication is impossible if the TSQ channel is different even though the communication channel is the same), SQ (SQuelch) key to adjust the squelch sensitivity (linked to the squelch) SW (Sub-channel Warch) key to search for and receive other sub-channels besides the main channel already in operation. There is CMP (CoMPander) keys, and the like to remove unnecessary noise.

The memory 180 stores voice information of the other party received through the receiver 120 or voice information of the user input through the microphone 160, and the A / D converter 170 is the receiver 120 or the microphone. The analog voice signal input through the 160 is converted into a digital form and stored in the memory 180, and the digital voice signal stored in the memory 180 is converted into an analog form and output to the speaker 150. .

The input unit 140 is provided with a recording key for storing (recording) the input voice information for storing the voice information in the memory 180, and among the various types of voice information stored in the memory 180. A selection key for selecting the voice information to be output is provided, and a voice output key for outputting the selected voice information to the speaker 150 is provided, and the living radio of the other party sharing the selected voice information with a frequency (communication channel) A voice transmission key for transmitting a voice signal is provided, and a CQ call (Come Quickly Call) key is provided for periodically repeating this when the selected voice information is a call signal.

The CPU 190 is electrically connected to the transceivers 110 and 120, the microphone 160, the speaker 150, the input unit 140, the display unit 130, the A / D converter 170, and the memory 180. Control them globally.

The CPU 190 receives an input command from the input unit 140 to execute a corresponding function, and describes other control functions.

First of all, when the function key is operated, the manual of the function key is displayed on the display unit 130 or the voice is output through the speaker 150 so that the user can immediately know the manual (use, function, etc.) of each function key. The display unit 130 and the speaker 150 simultaneously display and output audio. In this case, the function limit key may be provided in the input unit 140 to prevent the actual function of the function key from being operated.

When the recording key is operated to store the received voice in the memory 180, the received voice is blocked so that the voice recorded in the memory 180 is no longer output through the speaker 150. To this end, the CPU 190 is provided with a blocking unit.

In the above description of the present invention has been described with reference to the accompanying drawings, a living radio having an auto squelch controller having a specific structure, but the present invention can be variously modified and changed by those skilled in the art, such variations and modifications It should be interpreted as falling within the protection scope of the invention.

1 is a schematic configuration diagram of a life radio according to the present invention.

2 is a schematic configuration diagram of a receiver.

3 is a schematic configuration diagram of a transmitter.

<Description of the symbols for the main parts of the drawings>

20: Auto Squelch Controller 21: Noise Amplifier

22: high pass filter 25: A / D converter

26: comparator 27: SQ control unit

110: transmitter 120: receiver

121: RF amplifier 122: mixer

123 FM Detector 125: Squelch Section

130: display unit 140: input unit

150: speaker 160: microphone

170: A / D converter 180: memory

190 CPU

Claims (4)

A communication unit for transmitting / receiving a signal for radio communication, a microphone for receiving a voice for transmission, a speaker for outputting the received voice, and an input unit including a plurality of function keys for a user's operation, and a radio communication state. In the living radio comprising a display unit for displaying to the user, and a CPU electrically connected to the transceiver, the input unit and the display unit to control all of them, Receiving unit of the transceiver An RF amplifier for amplifying a radio signal received through an antenna; A mixer for mixing a wireless signal amplified by the RF amplifier and a local oscillation frequency; An FM detector for extracting a voice signal from a wireless signal input through the mixer; A filter for filtering the voice signal extracted by the FM detector; A power amplifier for amplifying and outputting the voice signal filtered by the filter to a speaker; A squelch unit provided between the filter and the power amplifier to suppress noise in a voice signal transmitted; And A noise amplifier for amplifying noise included in the voice signal extracted by the FM detector; A high pass filter for removing low frequency components of noise amplified by the noise amplification; An A / D converter for converting an analog signal of noise passing through the high pass filter into a digital signal; A comparator for extracting a level and frequency of noise converted into a digital signal in the A / D converter and comparing the preset reference data with a preset reference data; And an auto squelch controller including an SQ controller for receiving a comparison result from the comparator and controlling the noise suppression amount of the squelch part accordingly. The auto squelch controller A noise secondary amplifier for amplifying the output noise of the high pass filter; And a secondary filter configured to rectify and filter the output noise of the noise secondary amplifier by a double voltage, and transmit the filtered noise to the A / D converter. When the function key of the input unit is operated, the display unit or the speaker displays a manual of the function key or guides it by voice. The CPU is connected to a memory for recording and storing the voice information input through the microphone or the voice information received through the transceiver, the input unit is provided with a recording key for recording the voice information in the memory, The input unit includes a recording voice selection key for selecting voice information stored in the memory, and a CQ call key (Come Quickly Call) for periodically and repeatedly transmitting the selected voice information to other living radios sharing a frequency. The CPU is provided with a blocker to block the output of the received voice information through the speaker while the voice information is stored in the memory when the recording key is operated in the state of receiving the voice information from the other radio during the communication A walkie talkie with an auto squelch controller, characterized by the above-mentioned. delete delete The method of claim 1, The transmitter and the transmitter transmits an input amplifier for amplifying the voice signal input through the microphone, a modulator for modulating the output voice signal of the amplifier to a CB band frequency, and amplifies the output voice signal of the modulator. A walkie-talkie with an auto squelch controller, characterized in that it comprises an output amplifier for transmitting through an antenna.

Images