KR101101279B1 - Wireless microphone recording device and method by record button operation - Google Patents

Abstract

PURPOSE: A wireless microphone recording device and a method by operating a record button are provided to record a voice by transmitting a control signal with a wireless microphone headset in a base receiver. CONSTITUTION: An Rx(Base Receiver)(200) stores and reproduces audio data. An Tx(HANDY)(100) transmits audio data through 2.4GHz ISM band WIMIC(Wireless Microphone) radio frequency channel with the Rx. If the record button of a wireless microphone handset is pressed, burns, the wireless microphone handset transmits the voice signal with the Rx. A recorder(310) is connected to the Rx. The recorder includes a player including A/V codec.

Description

Wireless microphone recording device and method by record button operation

The present invention relates to a wireless microphone recording apparatus and method, and more particularly, to form a wireless link by synchronization with the detachment of a wireless microphone handset (Tx: HANDY) mounted on a base receiver (Rx: Base Receiver). Automatic audio on and transmits the modulated voice signal from the wireless microphone handset (Tx: HANDY) separated within a certain distance (1000feet-2000feet) to the base receiver (Rx) through 2.4GHz ISM band WMIC RF frequency channel. When not recording, only the record button of the wireless microphone handset (Tx: HANDY) is pressed and the audio signal is transmitted and stored to the base receiver (Rx) in record mode (Audio Recording) and the base receiver (Tx) The present invention relates to a wireless microphone recording apparatus and method using a record button operation, which is reproduced by a connected speaker or stored in a recorder system.

Recently, a wireless microphone (WMIC) is composed of a microphone and a small transmitter, and is widely used in broadcast theaters and law enforcement places because it does not need to be noticed by the other party because the microphone cable is not required. For example, a wireless microphone (WMIC) is a structure in which a condenser microphone is directly used as a part of a radio transmitter modulation circuit, and a semiconductor small microphone is used to connect its output to a modulator of a small transmitter. Is used. In the semiconductor type small microphone, a microphone is inserted into a tie pin brooch or the like, and a transmitter is put on a belt or put in a top pocket.

Transmitters have a power output of about 600 meters and are widely used without the need for a license from the station. As a result, the transmitter body is smaller than the pack of cigarettes, so in the hand microphone it is in its cylindrical case and is powered by a battery. The antenna for transmission is used internally. The modulation method uses frequency modulation (FM).

Similar to the Wireless Microphone (WMIC), there is a radio microphone, which is used for voice recording and wireless transmission for business purposes. A radio microphone is a combination of a portable radio transmitter and a microphone using a radio band of 160 MHz or 460 MHz. The transmission power is large and a license of the radio station is required. Mobile microphone devices are called Handy Talkies or Walkie Talkies. A voice transceiver, commonly referred to as a transceiver, is a microphone, a wireless transmitter, a wireless receiver, a speaker, and an antenna in one case, and two or more units are treated as a pair.

1 is a block diagram of a wireless microphone handset system mounted on a conventional base receiver.

The wireless microphone transmission / reception system is mounted on the cradle of the base receiver 200, and when separated, the two devices are synchronized with each other and are automatically turned on at the same time, and amplify the voice signal of 200-4000 Hz recorded through the microphone. A wireless microphone handset (Tx: HANDY) 100 for transmitting a voice signal modulated by a specific modulation / demodulation (AM, FM, PCM, etc.) method to the base receiver 200 after A / D conversion and voice encoding; Frequency Hopping Spread Spectrum (FHSS), which is used as a cradle and a main body of a wireless microphone (WMIC) handset and transmits a modulated voice signal transmitted from the wireless microphone handset 100 through a 2.4 GHz ISM band WMIC radio frequency channel. A wireless microphone base receiver 200 which receives a signal using a spread spectrum), demodulates it, stores it as a memory, and outputs it to its own speaker; And a player connected to a base receiver (Rx) 200, the player including an audio codec for reproducing voice data received in real time or stored in flash memory. It is composed.

The modulated voice signal transmitted from the transmitting antenna of the wireless microphone handset (Tx: HANDY) 100 using a specific modulation and demodulation scheme is received by the receiving antenna of the base receiver 200 through the 2.4 GHz ISM band and demodulated by the corresponding demodulation scheme. (demodulation) to store, play back with the connected speaker, or play back by the recording system (300).

FIG. 2 is a diagram illustrating an appearance of a base receiver of FIG. 1.

The base receiver 200 has a terminal for charging, an in-use LED (green LED: in-use, record), and a battery status indication LED (RED LED: charging, green LED: full charge) on the front surface. The rear side includes a receiving antenna connection unit, a modular jack connection unit, and an audio jack input unit for a car microphone.

FIG. 3 is a view illustrating the external appearance of the wireless microphone transmitter of FIG. 1.

The wireless microphone handset (Tx: HANDY) 100 has a record button on the top, an in-use button, an emergency button that is pressed during a low battery indicator and panic state. (Hereinafter referred to as panic button) (Emergency Button, Panic button), Lapel Microphone Cover (Lapel Microphone Cover) is provided, and the Power On / Off Switch (Power On / Off Switch) is provided on the left side.

In normal operation, the wireless microphone Transmitter 100 synchronizes the wireless link to the Base Receiver 200, presses the In-use button and starts recording with the microphone. At the start, the In-use LED is always green and you will hear a short beep.

The Low BATT indicator of the wireless microphone handset 100 transmits a flashing red or warning beeps when the battery is almost exhausted. When the wireless microphone handset Transmitter 100 is fully charged, the charge LED indicator is always displayed in green.

In Record mode, pressing the panic button (emergency button) of the wireless microphone handset (Tx: Handy, Transmitter) 100 generates a beep, and a relay triggers wireless communication in the base receiver 200. Triggered.

In Standby mode, the panic button (emergency button) on the wireless microphone handset (Tx: Handy, Transmitter) 100 is pressed to generate a beep, and the green In-Use indicator blinks (blink). A relay is triggered in the base receiver 200 for wireless communication.

In Standby mode, where a wireless link is not established with the wireless microphone handset (Tx: Handy, Transmitter) 100 and the base receiver (Rx: Base Receiver) 200, and no voice signal is transmitted, the user may select the wireless microphone handset (Tx: Pressing the panic button (Emergence button, Panic button) on HANDY (100) will generate an alarm, the green In-Use indicator will blink, and the relay will turn on the base receiver (Rx: Triggered at the base receiver (200).

The wireless microphone handset (Tx: HANDY) 100 mounted on the cradle of the base receiver (Rx: Base Receiver) 200 is detached and the synchronization of the wireless link is performed within a certain distance (1000 feet-2000 feet). When the audio is turned on and the wireless link is established, the recorded voice signal is transmitted to the base receiver (Rx) 200 through the frequency channel of the 2.4 GHz ISM band wireless microphone, and the base receiver (Rx) to play the speaker connected to (200) or stored in the recording system 300 to play.

4 is a diagram illustrating an internal configuration of a wireless microphone handset system mounted on a base receiver (Rx) connected to a conventional recorder.

A conventional wireless microphone system consists of a wireless microphone handset (Tx: Handy, Transmitter) 100, a wireless microphone base receiver (Rx: Base Receiver) 200, and a recorder system 300.

The wireless microphone handset 100 includes a WMIC control unit 110 for controlling each operation of the wireless microphone (WMIC); Record button, In-use button, Low BATT indicator, Panic button on the top (hereinafter called panic button) (Emergency Button, Panic button), Lapel Microphone Cover, Front-use LED (Green: In-use (Light On), Record (Flashing), RED LED: Out of Range), Battery Status LED (RED LED: A button and an LED 120 including an emergency button and a panic button, which are pressed in a low battery and a panic state; A microphone 130 for receiving an analog voice signal; An amplifier 131 which band-passes the electric analog voice signal received from the microphone 140 into a voice band and then amplifies the signal to a predetermined level; An A / D converter 132 for converting the amplified analog voice signal into digital voice data; A voice encoder 133 for compressing digital voice data by an audio codec; A memory 170 for temporarily storing compressed voice data; A battery 180 for supplying power to the DC 5V battery; And modulating the compressed voice data in real time by using either amplitude modulation (AM), frequency modulation (FM), or pulse code modulation (PCM). The RF transceiver 190 is transmitted to the 2.4GHz RF ISM band WMIC radio frequency channel.

The wireless microphone base receiver (Rx) 200 receives a voice signal modulated to a 2.4 GHz RF ISM band WMIC radio frequency channel from the wireless microphone handset (Tx: Handy) 100 to filter noise, and to demodulate the demodulated signal. An RF transceiver 210 which demodulates in an (AM, FM, PCM, etc.) manner and detects voice; A WMIC base receiver controller 220 for controlling the synchronization, demodulation, voice storage, and output functions of the WMIC base; Speech decoder 230 for recovering compressed speech data: a D / A converter 231 for converting digital speech data into an analog speech signal; An amplifier 232 for amplifying the restored analog voice signal to a predetermined level; A speaker 233 for outputting an amplified analog voice signal; A power supply unit 270 for supplying a battery or power; And a flash memory 290 storing a control program and voice data.

Audio ON status automatically upon departure of the wireless microphone handset (Tx: HANDY) 100 mounted on the base receiver (Rx: Base Receiver) 200 used as a cradle of the main body of the wireless microphone (WMIC). Then, the recorded voice signal is transmitted to the base receiver 200 through the WMIC radio frequency channel of the 2.4 GHz ISM band and reproduced by the speaker connected thereto or stored in the recording system 300.

FIG. 5A shows the recording operation of the conventional wireless microphone (WMIC) handset (Tx: HANDY) of FIG. 4, and FIG. 5B shows the recording operation of the recorder system.

Referring to FIG. 5A, the recording operation of the wireless microphone (WMIC) handset (Tx: HANDY) is performed when the user presses the recording button of the wireless microphone (WMIC) handset (Tx: HANDY) (1), and the Tx / Rx Talk LED OFF ( From the state of 5V), press the TX Talk ON button and press the Tx Talk OFF button until the WMIC RX / TX TALK LED is ON (0V), and if you press the Tx Talk OFF button, it will be in the state of Tx / Rx Talk LED OFF (5V) again. 2), Press the TX Talk ON button and press the Tx Talk OFF button until you turn on the Audio ON (3) and the audio signal recorded from the microphone of the wireless microphone handset 100 to the 2.4GHz ISM band WMIC radio frequency channel. It is transmitted to the base receiver (Rx) 200 through the storage to continue recording (4), the audio signal (Audio Recording), and during the voice recording (6) pin 6 (in) of the recorder system of the base receiver (Rx) 200 ( The voltage from 300 to the base receiver (RX) 200 is maintained at 0V in a 5V state. 5V signal means record off of microphone, 0V signal means record on of microphone.

Referring to FIG. 5B, the recording operation of the recorder system 300 operates a button of the recorder system 300 connected to the base receiver 200 (1), and performs a voice until the system REC ON button is operated and the system REC OFF is performed. Audio recording is performed (2), and 6V pin (in) of the base receiver is maintained at 0V from the recorder system 300 to the base receiver 200 and is in the state of Tx / Rx Talk LED OFF (5V). WMIC Tx always audio signal is transmitted and WMIC RX / TX TALK LED is ON (0V) from REC ON state to System REC OFF state, and when it is in System REC OFF state, it becomes Tx / Rx Talk LED OFF (5V) state again (3 ), From the base receiver (RX) 200 of the 7th pin (out) of the base receiver (Rx) 200 to the recorder system 300 during Audio ON (Audio ON) 4, Audio ON. The voltage is kept at 0V in the 5V state. 5V signal means record off of microphone, 0V signal means record on of microphone.

However, the detached and portable wireless microphone handset (Tx: HANDY) 100 mounted on a base receiver (Rx) 200 connected to the recorder system 300 is automatically turned on at the same time as the detachment. The audio signal and the recorded voice signal are continuously transmitted from the microphone to the base receiver (Rx) through the 2.4 GHz RF WMIC frequency channel so that audio data is recorded and recorded according to the recorder operation of the recorder, and unwanted audio data is recorded. Or it takes up a lot of memory capacity.

The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to provide a wireless microphone handset (Rx) mounted to a base receiver (Rx: Base Receiver) used as a cradle and a main body of a wireless microphone (WMIC). When the Tx: HANDY is separated, the wireless link is established by the synchronization of the two devices in the standby mode, and the audio is automatically turned on at the same time, and the mobile microphone is separated and carried within a certain distance (1000feet-2000feet). In real time, the voice signal from the handset (Tx: HANDY) is transmitted and stored to the base receiver (Rx) via the 2.4 GHz ISM band WMIC RF frequency channel and the record button of the wireless microphone handset (Tx: HANDY) is not stored. Only when pressed, the record mode transmits the audio signal to the base receiver (Rx) at the same time and saves it with the speaker connected to the base receiver (Rx) or the recorder system for playback. If the recorder system is operated by an alarm or other method, it transmits a signal through the base receiver (Rx) to the wireless microphone handset (Tx) for voice recording. It is to provide a wireless microphone recording apparatus by the record button operation, which is indicated by.

Another object of the present invention is to provide a wireless microphone recording method by a record button operation which is particularly suitable for implementing the wireless microphone recording apparatus.

In order to achieve the object of the present invention, the wireless microphone recording apparatus by the record button operation is used as a cradle and the main body of the wireless microphone handset (WMIC), the voice is communicated in 2.4GHz ISM band WIMIC radio frequency channel within a certain distance A base receiver for storing and reproducing data and outputting the same to a speaker; It is mounted on the cradle of the base receiver Rx, and when detached, it is synchronized with the base receiver Rx and automatically turned on at the same time, and audio data is transferred through the 2.4 GHz ISM band WIMIC radio frequency channel. The wireless microphone handset Tx: HANDY, which is transmitted to the base receiver Rx and transmits and stores a voice signal to the base receiver Rx only when the record button of the wireless microphone handset Tx: HANDY is pressed. ); And a recorder coupled to the base receiver Rx, the player including an A / V codec for reproducing real-time or stored voice data.

In order to achieve the another object of the present invention, the wireless microphone recording method by the record button operation, (a) when the departure of the wireless microphone handset (Tx: HANDY) mounted on the base receiver (Rx: Base Receiver), the Synchronizing a wireless microphone handset (Tx: HANDY) with the base receiver (Rx) and simultaneously keeping the Audio ON automatically; (b) in a standby state, and transmits a voice signal to the base receiver (Rx) through a 2.4 GHz ISM band WMIC radio frequency channel in real time from the separately carried wireless microphone handset (Tx: HANDY); Not storing it; (c) Only when the record operation button of the wireless microphone handset (Tx: HANDY) is pressed (Record ON), the voice signal is transmitted to the record mode and the voice signal is stored in the memory of the base receiver Rx. step; (d) When the record off button of the wireless microphone handset Tx: HANDY is pressed (Record Off), the base receiver Rx from the wireless microphone handset Tx: HANDY through the 2.4 GHz ISM band WMIC radio frequency channel. Stopping recording of the audio signal to the memory in real time in a real time, and maintaining only the audio signal in the audio ON state. And (e) reproducing the voice signal by the speaker of the base receiver Rx or by the recorder system.

As described above, the wireless microphone recording apparatus and method by the record button operation according to the present invention in the standby mode of the departure of the wireless microphone handset (Tx: HANDY) mounted on the base receiver (Rx: Base Receiver) Synchronization and automatic audio ON at the same time, and continue to transmit voice signals from the wireless microphone handset (Tx: HANDY) separated within a certain distance (1000 feet-2000 feet) to the 2.4GHz ISM band. Transmit to the base receiver (Rx: Base) via the WMIC radio frequency channel, do not store it, and return to the base receiver (Rx: Base) in record mode only when you press the record button on the wireless microphone handset (Tx: HANDY). Send and store voice signals. A speaker connected to the base receiver (Tx) provides a function of storing and playing back audio by a playback or recording system. If the recorder system is operated by an alarm or other method, the base receiver (Rx: Base) transmits a control signal to the wireless microphone handset (Tx) to record the voice, and displays the standby mode and the record mode. It is effective to display recording status and charging status by LED and to recognize voice recording status.

1 is a block diagram of a wireless microphone handset system mounted on a conventional base receiver.
FIG. 2 is a diagram illustrating an appearance of a base receiver of FIG. 1.
FIG. 3 is a diagram illustrating an external appearance of the wireless microphone handset of FIG. 1.
4 is a diagram illustrating an internal configuration of a wireless microphone (WMIC) handset system mounted on a base receiver (Rx) connected to a conventional recorder.
5A and 5B illustrate the recording operation of the conventional wireless microphone (WMIC) handset (Tx: HANDY) of FIG. 4 and the recording operation of the recorder system.
6 is an internal configuration diagram of a wireless microphone (WMIC) handset system mounted on a base receiver (Rx: Base Receiver) connected to a recorder according to the present invention.
7A and 7B illustrate a recording operation of a conventional wireless microphone (WMIC) handset (Tx: HANDY) and a recording operation of a recorder system according to the present invention of FIG. 6.
8 is a flowchart illustrating a wireless microphone recording method by a record button operation according to an embodiment of the present invention.

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

FIG. 6 is a diagram illustrating an internal configuration of a handset system in which a wireless microphone (WMIC) mounted on a base receiver (Rx) connected to a recorder according to the present invention is embedded.

The wireless microphone recording apparatus by the record button operation according to the present invention is composed of a wireless microphone handset 101, a wireless microphone base receiver 202, and a recorder system 310.

The wireless microphone handset 101 includes a WMIC control unit 110, buttons and LEDs 120, a microphone 130, an amplifier 131, an A / D converter 132, a voice encoder 133, a vibration sensor 150, The A / D converter 151, the memory 170, the power supply unit 180, and the RF transceiver 190 are included.

The wireless microphone base receiver 202 includes an RF transceiver 210, a WMIC base receiver controller 220, a voice decoder 230, a D / A converter 231, an amplifier 232, a speaker 233, a power supply unit ( 270, and a flash memory 290.

Wireless microphone recording apparatus according to the record button operation according to the present invention is mounted on the cradle of the base receiver (Rx: Base Receiver) 202 and is synchronized with the base receiver (Rx: Base Receiver) in standby mode when the departure is made (Synchronization) A wireless link is established and automatically turned ON at the same time, and the wireless microphone handset (WMIC) 101 and the base receiver (Rx: Base Receiver) 202 are separated by a certain distance (1000 feet-2000 feet). Within 200-4000Hz of the audio signal recorded through the microphone of the wireless microphone, the base receiver (Rx: Base) using the frequency hopping spread spectrum (FHSS) method through the WMIC radio frequency channel of the 2.4GHz ISM band. Receiver 202 transmits the modulated voice signal to record mode only when the record button of the wireless microphone handset (Tx: HANDY) is pressed and not stored. A wireless microphone handset (Tx: HANDY) 101, which is stored in a memory of a receiver (Rx: Base) 202 (Audio Recording) and reproduces voice with its own speaker;

Used as a cradle and main body of a wireless microphone (WMIC) handset, the modulated voice signal transmitted from the wireless microphone handset 100 is received and demodulated by using the FHSS method through a 2.4 GHz ISM band WMIC radio frequency channel. A wireless microphone base receiver 202 for storing an audio signal, and outputting an analog audio signal to its own speaker after voice decoding, D / A conversion, and amplification; And

A recorder system 310 is connected to a base receiver (Rx) 202 and includes a player including an A / V codec such as an MP3 codec for reproducing stored data in real time or in real time. .

The wireless microphone handset (Tx: HANDY) 101 includes a WMIC control unit 110 for controlling each operation of the wireless microphone (WMIC); Record button for audio recording, usage indicator LED (Green: In-use (Light On), Record (Flashing), RED LED: Out of Range), battery status indicator LED (RED LED: Low Battery (flashing) a button and an LED 120 having an emergency button to be pressed during a warning beep, a green: fully charging, and a panic state, and indicating an audio recording state and a charging state; A microphone 130 for receiving an analog voice signal; An amplifier 131 which band-passes the electric analog voice signal received from the microphone 140 into a voice band and then amplifies the signal to a predetermined level; An A / D converter 132 for converting the analog voice signal amplified from the amplifier 131 into digital voice data; A voice encoder 133 which compresses the digital voice data received from the A / D converter 132 by an audio codec (MP3 codec, etc.); A vibration sensor 150 for detecting vibration of the handset; An A / D converter 151 for A / D converting the vibration signal detected from the vibration sensor 150; A memory 170 that temporarily stores compressed voice data when the distance from the base receiver Rx 202 is too long, when it is difficult to transmit a voice signal due to a long distance deviation; A battery 180 for supplying power to the DC 5V battery; And transmitting the modulated voice signal by using one of amplitude modulation (AM), frequency modulation (FM), or pulse code modulation (PCM) modulation in real time. An RF transceiver 190 transmits the WMIC radio frequency channel of the 2.4GHz ISM band of the antenna.

The wireless microphone handset (Tx: HANDY) 101 is separated from the base receiver (Rx) 202 by more than a certain distance (1000 feet-2000 feet) and is out of synchronization with the base receiver (Rx) 202 when the call is out of range. If is not formed or if it is difficult to wirelessly transmit the voice signal recorded from the microphone to the base receiver (Rx) 202 as an obstacle, use the PANIC Emergency Button to minimize the compressed voice data. It provides a function of storing in its own flash memory 170 that can be stored for 8 hours.

The LED 280 is displayed in red when the wireless microphone transmitter (Tx: Handy) is at Low Battery, generates a beep, and is fully charged. Is displayed in green (or yellow).

The wireless microphone base receiver (Rx) 202 receives a modulated voice signal from a wireless microphone handset (Tx: HANDY) 101 on a 2.4 GHz ISM band WMIC radio frequency channel to filter noise and to perform corresponding demodulation (AM, FM). RF transmission / reception unit 210 for demodulating in a manner such as PCM and detecting a voice; A WMIC base receiver controller 220 for controlling synchronization, demodulation, voice storage and output functions of each block; Speech decoder 230 for decoding and restoring compressed speech data: a D / A converter 231 for converting digital speech data provided from speech decoder 230 into an analog speech signal; An amplifier 232 for amplifying the analog voice signal from the D / A converter 231 to a predetermined level; A speaker 233 which outputs an analog voice signal amplified from the amplifier 232; A power supply unit 270 supplying a battery or an AC voltage through an adapter; And a flash memory 290 for storing a control program and voice data; And an LED 280 for indicating a voice recording state and use state, and a charge state.

7A and 7B illustrate a recording operation of a conventional wireless microphone (WMIC) handset (Tx: HANDY) and a recording operation of a recorder system according to the present invention of FIG. 6.

Referring to FIG. 7A, the recording operation of the wireless microphone handset (Tx: HANDY) 101 is synchronized with the base receiver (Rx: Base Receiver) 202 when the user leaves the wireless microphone handset (Tx: HANDY) 101. (Synchronization) and automatically the wireless microphone handset (Tx: HANDY) 101 remains Audio ON (1), press the record button (Tx REC ON) (2), Tx / Rx From the REC LED OFF state, press the System REC ON button and press the System REC OFF button until the WMIC RX / TX REC LED is ON, and pressing the Tx REC OFF button turns the Tx / Rx REC LED OFF state again (3). In the (Audio ON) state, the audio signal is transmitted from the wireless microphone handset (Tx: HANDY) 101 to the base receiver (Rx) 202 in real time, and is not stored in the memory of the base receiver. From the microphone of the wireless microphone handset (Tx: Handy) 101 until you press the System REC OFF button. Eumdoen the audio signal receiver base via a 2.4GHz ISM band WMIC radio frequency channel: and recording (Audio Recording), the audio signal being sent to the (Rx Base Receiver) (202) stored in the memory 4.

Referring to FIG. 7B, when the recording operation of the recorder system 310 is in an audio on state (1), when the recording button or alarm of the system operates (2), the system REC ON button is operated and the system REC OFF is performed. The section is audio recording (3) until the 6x pin (in) of the base receiver is in the Tx / Rx REC LED OFF (5V) state from the recorder system 310 to the base receiver 202. WMIC RX / TX REC LED is ON (0V) from System REC ON state to System REC OFF state, and when it goes to System REC OFF state, it goes back to Tx / Rx REC LED OFF (5V) state (4) During recording, the voltage from the base receiver (RX) 200 of the 7th pin (out) of the base receiver (Rx) 200 to the recorder system 300 is maintained at 0V in the 5V state (5). 5V signal means record off of microphone, 0V signal means record on of microphone.

8 is a flowchart illustrating a wireless microphone recording method by a record button operation according to an embodiment of the present invention.

Wireless microphone recording method according to the record button operation according to the present invention is a certain distance (1000feet-2000feet) of the wireless microphone handset (Tx: HANDY) 101 mounted on the base receiver (Rx: Base Receiver) 202 used for police cars, etc. ), The wireless microphone handset (Tx: HANDY) 101 and the base receiver (Rx: Base Receiver) 202 are synchronized (step S10) and at the same time automatically turned on. (Step S11), the base station (Rx: Base) transmits the voice signal modulated in real time from the wireless microphone handset (Tx: HANDY) 101 that is in a stand-by state and is separated through a 2.4 GHz ISM band WMIC radio frequency channel. Receiver (202) (step S12) do not store, but press the record operation button of the wireless microphone handset (Tx: HANDY) (Record ON) (step S13) only 200 ~ 4000Hz voice signal in Record mode At the same time the base receiver (Rx: The voice signal is stored in the memory of the base receiver 202 (step S14).

When the user presses the record off button of the wireless microphone handset (Tx: HANDY) 101 (Record Off), the detached portable microphone handset (Tx: HANDY) 101 is connected via a 2.4 GHz ISM band WMIC radio frequency channel. The base receiver (Rx: Base Receiver) 202 stops audio recording in which a voice signal is stored in a memory in real time, and maintains a state in which only the voice signal is received in the audio ON state again ( Step S15). In this case, the wireless microphone handset (Tx: HANDY) 101 and the base receiver (Rx: Base Receiver) 202 are respectively marked with a recording state and a charging state with LEDs.

At this time, when event conditions such as sound fluctuation and vibration detection of the base receiver (Rx) 202 are detected, the recording state and the charging state are respectively indicated by LEDs (step S16), and the recorder system is turned on in the reverse direction (step S16). Simultaneously with step S17), the base receiver (Rx) 202 enters the HANDY Record ON state (step S18) of the wireless microphone handset (Tx: HANDY) 101 and receives a voice signal.

Then, the base receiver (Rx: Base Receiver) 202 reproduces the analog voice signal by its own speaker after voice decoding, D / A conversion, and amplification, or reproduces the voice signal by the recorder system 310 (step S19). .

Similarly, the base receiver (Rx: Base Receiver) 202 may be powered by an event ON, or the like, when the recorder system 310 operates in other ways, via the base receiver (Rx: Base Receiver) 202. The voice is recorded by transmitting a signal to (Tx) 101 and at this time, the recording status, the charging status is indicated by the LED, and the standby mode and the record mode are displayed and recognized.

As described above, the present invention has been described in detail through preferred embodiments, but the present invention is not limited thereto, and various changes and applications are apparent to those skilled in the art without departing from the technical spirit of the present invention. Accordingly, the true scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same should be construed as being included in the scope of the present invention.

101: wireless microphone handset 110: WMIC control
120: buttons and LEDs 130: microphone
131: amplifier 132: A / D converter
133: voice encoder 150: vibration sensor
151: A / D converter 170: memory
180: power supply unit 190: RF transceiver
202: wireless microphone base receiver 210: RF transceiver
220: WMIC base receiver control unit 230: voice decoder
231: D / A converter 232: amplifier
233: speaker 270: power supply
280: LED 290: flash memory
310: recorder system

Claims (8)

In the wireless microphone recording apparatus by the record button operation,
A base receiver (Rx: Base Receiver), which is used as a cradle and a main body of a wireless microphone handset (WMIC), and stores and reproduces voice data communicated on a 2.4 GHz ISM band WIMIC radio frequency channel within a predetermined distance to a speaker;
Mounted on the cradle of the base receiver (Rx), when detached is synchronized with the base receiver (Rx) and at the same time automatically audio ON (Audio ON) state, the voice data via the 2.4GHz ISM band WIMIC radio frequency channel The wireless microphone handset Tx, which is transmitted to the base receiver Rx and transmits and stores a voice signal to the base receiver Rx only when the record button of the wireless microphone handset Tx: HANDY is pressed. HANDY); And
A recorder having a player connected to the base receiver (Rx) and including an A / V codec for reproducing stored voice data;
Wireless microphone recording device by a record button operation comprising a. The method of claim 1,
The wireless microphone handset
A WMIC control unit controlling each operation of a wireless microphone (WMIC);
Record button, usage indicator LED (Green: In-use (Light On), Record (Flashing), RED LED: Out of Range), battery status indicator LED (RED: Low Battery, Green: fully charging), A button and an LED having an emergency button (Panic Button) pressed in a panic state and indicating a voice recording state and a charging state;
A microphone receiving an analog voice signal;
An amplifier for band-passing the electric analog voice signal received from the microphone into a voice band and then amplifying the signal to a predetermined level;
An A / D converter for converting an analog voice signal amplified from the amplifier into digital voice data;
A voice encoder for compressing the digital voice data received from the A / D converter by an audio codec;
A vibration sensor for detecting vibration of the handset;
An A / D converter for A / D converting the vibration signal detected from the vibration sensor;
A memory for temporarily storing compressed voice data;
A battery for supplying power;
An RF transceiver for modulating the compressed voice data in real time by amplitude modulation or frequency modulation (FM) or PCM (Pulse Code Modulation), and transmitting the modulated voice signal to the 2.4 GHz ISM band WMIC radio frequency channel of a transmission antenna; And
LED for indicating voice recording status and charging status;
Wireless microphone recording device by a record button operation comprising a. The method of claim 1,
The wireless microphone base receiver,
An RF transceiver for receiving a modulated voice signal through a 2.4 GHz ISM band WMIC radio frequency channel from the wireless microphone handset, filtering the noise, and demodulating the demodulated signal according to a demodulation (AM, FM, PCM, etc.) method;
A WMIC base receiver controller for controlling synchronization, demodulation, voice storage and output functions of each block;
Speech decoder that decodes and restores compressed speech data:
A D / A converter for converting digital voice data provided from the voice decoder into an analog voice signal;
An amplifier for amplifying the analog voice signal from the D / A converter to a predetermined level;
A speaker for outputting an analog voice signal amplified from the amplifier;
A power supply unit supplying power; And
A flash memory for storing a control program and voice data;
Wireless microphone recording device by a record button operation comprising a. The method of claim 3,
The wireless microphone base receiver,
Wireless microphone recording apparatus by the record button operation further comprising an LED indicating the voice recording status and use, and the charging status. The method of claim 1,
The wireless microphone handset (Tx),
If the distance from the base receiver (Rx) is too far, if it is difficult to transmit the voice signal in a long distance, the record button operation, characterized in that to provide a function for storing the compressed voice data in its own memory to temporarily store By wireless microphone recording device. In the wireless microphone recording method by the record button operation,
(a) When the wireless microphone handset (Tx: HANDY) mounted on the base receiver (Rx: Base Receiver) is detached, the wireless microphone handset (Tx: HANDY) and the base receiver (Rx) are synchronized at the same time and automatically. Keeping Audio ON;
(b) in a standby state, and transmits a voice signal to the base receiver (Rx) through a 2.4 GHz ISM band WMIC radio frequency channel in real time from the separately carried wireless microphone handset (Tx: HANDY); Not storing it;
(c) Only when the record operation button of the wireless microphone handset (Tx: HANDY) is pressed (Record ON), the voice signal is transmitted to the record mode and the voice signal is stored in the memory of the base receiver Rx. step;
(d) When the record off button of the wireless microphone handset Tx: HANDY is pressed (Record Off), the base receiver Rx from the wireless microphone handset Tx: HANDY through the 2.4 GHz ISM band WMIC radio frequency channel. Stopping recording of the audio signal to the memory in real time in a real time, and maintaining only the audio signal in the audio ON state. And
(e) reproducing a voice signal by a speaker of the base receiver Rx or by a recorder system;
Wireless microphone recording method by a record button operation comprising a. The method of claim 6,
When event conditions such as sound fluctuations and vibration detection of the base receiver Rx are detected, the recording state and the charging state are respectively indicated by LEDs, and the base receiver Rx is simultaneously turned on at the same time as the recorder system is turned on in the reverse direction. The recording of the wireless microphone handset (Tx: HANDY) through the wireless microphone recording method by the record button operation further comprising the step of receiving a voice signal. The method of claim 6,
The wireless microphone handset (Tx: HANDY) and the base receiver (Rx) is a wireless microphone recording method according to the record button operation further comprising the step of displaying the recording state, the charging state by LED, respectively.

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