KR101524801B1 - Wireless microphone receiver, wireless microphone transmitter, and wireless microphone system including the same - Google Patents

Wireless microphone receiver, wireless microphone transmitter, and wireless microphone system including the same Download PDF

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Publication number
KR101524801B1
KR101524801B1 KR1020140148069A KR20140148069A KR101524801B1 KR 101524801 B1 KR101524801 B1 KR 101524801B1 KR 1020140148069 A KR1020140148069 A KR 1020140148069A KR 20140148069 A KR20140148069 A KR 20140148069A KR 101524801 B1 KR101524801 B1 KR 101524801B1
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KR
South Korea
Prior art keywords
microphone radio
auto
microphone
radio transmitter
control signal
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KR1020140148069A
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Korean (ko)
Inventor
김정훈
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김정훈
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/034—Portable transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station

Abstract

The microphone radio receiver according to an embodiment of the present invention can wirelessly communicate with a microphone radio transmitter including a second auto-torque switch, wherein the microphone radio receiver includes a baseband processor, a second auto- A first auto-torque switch for generating an on-control signal capable of wirelessly turning on and off the second auto-torque switch and an off-control signal capable of wirelessly turning off the second auto-torque switch, An RF transmission amplifier for wirelessly transmitting the on-control signal or the off-control signal to the microphone radio transmitter under the control of the processor; and a plurality of radio transmitters, each of which can receive an audio signal transmitted from the microphone radio transmitter Diversity antennas, and a receiver for receiving the audio signal output from each of the plurality of diversity antennas, A processing circuit for processing the amplified audio signal output from the RF receiving amplifier, and an output circuit for outputting the audio signal processed by the processing circuit .

Description

TECHNICAL FIELD [0001] The present invention relates to a microphone wireless receiver, a microphone wireless transmitter, and a microphone wireless system including the same. BACKGROUND OF THE INVENTION [0002]

An embodiment according to the concept of the present invention relates to a microphone radio system, in particular to remotely control the power of a microphone radio transmitter by means of a microphone radio receiver and to automatically control the power of the microphone radio transmitter and the microphone radio transmitter automatically To a microphone radio receiver, a microphone radio transmitter, and a microphone radio system including the same that are synchronized and capable of simultaneously charging a microphone radio receiver and a microphone radio transmitter.

Generally, the 2.4 GHz wireless microphones of the prior art have limited transmission distances of up to 10 to 15 meters in the open space for small power (maximum output of 10 mW) for short-range wireless communication. In particular, the 2.4 GHz band ISM (industry- medical band, the actual usable distance is very limited due to crosstalk and noise when indoor and other wireless devices are mixed.

Also, when the user uses the 2.4GHz wireless microphone while on the move, if the wireless connection between the transmitter and the receiver is disconnected due to limited distance and other environmental factors, it will return to the usable area and re- Second, the transmitter and the receiver enter the connection off state, and there is a possibility that the continuity of the business is deteriorated and the business is disconnected.

In the case of the notification function due to the shortage of the transmitter battery during the use of the conventional technology at present, the user must check the battery condition of the transmitter every time with eyes, which may result in work interruption when the transmitter can not be used due to low work concentration and battery shortage .

In addition, in the prior art, in order to synchronize the transmitter and the receiver before using the battery or discharging or replacing the battery, each additional button must be pressed to enter the pairing mode, and a separate charger It is necessary to pay a burden of increasing the cost of the consumer due to an increase in manufacturing cost and inconvenience of carrying.

1. Published Patent Application No. 10-2001-0000459 (published on Jan. 5, 2001) 2. Open Patent Publication No. 10-2009-0028940 (Publication date: March 20, 2009)

SUMMARY OF THE INVENTION It is an object of the present invention to remotely control the power of a microphone radio transmitter using a microphone radio receiver and automatically synchronize the microphone radio receiver and the microphone radio transmitter without additional procedures for synchronization, A microphone radio receiver capable of simultaneously charging a microphone radio transmitter, a microphone radio transmitter, and a microphone radio system including the same.

The microphone radio receiver according to an embodiment of the present invention can wirelessly communicate with a microphone radio transmitter including a second auto-torque switch, wherein the microphone radio receiver includes a baseband processor, a second auto- A first auto-torque switch for generating an on-control signal capable of wirelessly turning on and off the second auto-torque switch and an off-control signal capable of wirelessly turning off the second auto-torque switch, An RF transmission amplifier for wirelessly transmitting the on-control signal or the off-control signal to the microphone radio transmitter under the control of the processor; and a plurality of radio transmitters, each of which can receive an audio signal transmitted from the microphone radio transmitter Diversity antennas, and a receiver for receiving the audio signal output from each of the plurality of diversity antennas, A processing circuit for processing the amplified audio signal output from the RF receiving amplifier, and an output circuit for outputting the audio signal processed by the processing circuit .

Wherein the microphone radio receiver comprises: a Bluetooth module capable of wirelessly communicating with a Bluetooth device; and a Bluetooth module for enabling the microphone radio receiver and the Bluetooth device to communicate wirelessly when the microphone radio receiver and the Bluetooth device are in close proximity, And an NFC module for detecting a field detection signal from the field detection signal. The maximum output of the RF transmit amplifier may be 23 dBm.

The baseband processor may adjust the output of the RF transmit amplifier according to a received signal strength indication (RSSI) packet transmitted from the microphone radio transmitter.

The microphone radio transmitter according to an embodiment of the present invention can wirelessly communicate with a microphone radio receiver including a first auto-torque switch, wherein the microphone radio transmitter includes a baseband processor, a first auto- Control signal or an off-control signal from the microphone radio receiver; and a control unit for turning on the microphone radio transmitter in response to the on-control signal, and in response to the off- A second auto-torque switch for turning off the microphone radio transmitter; a processing circuit for processing an audio signal input from the outside in accordance with the control of the baseband processor; and a control circuit for amplifying the audio signal processed by the processing circuit An RF transmission amplifier for generating an amplified audio signal; And a diversity antenna for transmitting to the microphone radio receiver. The maximum output of the RF transmit amplifier may be 23 dBm.

The baseband processor may adjust the output of the RF transmission amplifier according to an RSSI packet transmitted from the microphone radio receiver.

The microphone radio system according to an embodiment of the present invention includes a microphone radio transmitter including a microphone radio receiver including a first auto-torque switch and a second auto-torque switch, A first RF transmission amplifier for wirelessly transmitting an on-control signal or an off-control signal generated from the first auto-torque switch to the microphone radio transmitter under the control of the first baseband processor; A plurality of diversity antennas, each of which can receive an audio signal transmitted from the microphone radio transmitter; a first antenna for amplifying the audio signal output from each of the plurality of diversity antennas and outputting an amplified audio signal; A receiving amplifier for receiving the amplified audio signal output from the first RF receiving amplifier, And a first output circuit for outputting an audio signal processed by the first processing circuit, wherein the first auto-torque switch is adapted to switch the second auto- Control signal that can be wirelessly turned on and off and the second auto-torque switch can be remotely turned off wirelessly

The microphone radio transmitter includes a second baseband processor, a second RF receiving amplifier for receiving an on-control signal or an off-control signal generated from the first auto-torque switch from the microphone radio receiver, A second processing circuit for processing an audio signal inputted from outside according to the control of the band processor; a second RF transmission amplifier for amplifying the audio signal processed by the second processing circuit and generating an amplified audio signal; And a diversity antenna for transmitting the amplified audio signal to the microphone radio receiver, wherein the second auto-torque switch turns on the microphone radio transmitter in response to the on- And can turn off the microphone radio transmitter in response.

The microphone radio system may simultaneously charge the microphone radio transmitter and the microphone radio receiver by mounting the microphone radio transmitter on the microphone radio receiver.

Upon charging, the microphone radio system may transmit a random encryption code for synchronization to the microphone radio transmitter and store the random encryption code for synchronization.

The microphone radio transmitter may transmit a receive complete signal for the random encryption code to the microphone radio receiver and store the random encryption code.

A microphone radio system according to an embodiment of the present invention controls the power of a microphone radio transmitter remotely by using a microphone radio receiver and is automatically synchronized with a microphone radio receiver and a microphone radio transmitter without additional procedures for synchronization, It is possible to simultaneously charge the receiver and the microphone radio transmitter.

The microphone radio receiver according to the embodiment of the present invention can wirelessly communicate with the Bluetooth device by incorporating the Bluetooth module and the NFC module, thereby improving the reception efficiency and transmitting the high-quality audio signal to a long distance.

The microphone radio transmitter according to the embodiment of the present invention has an effect that it is easy to check the state of the microphone radio transmitter and can transmit a high quality audio signal to a long distance.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to more fully understand the drawings recited in the detailed description of the present invention, a detailed description of each drawing is provided.
1 shows a block diagram of a microphone radio transmitter according to an embodiment of the present invention.
2 shows a block diagram of a microphone radio receiver according to an embodiment of the present invention.
3 illustrates a microphone radio system in accordance with an embodiment of the present invention.
4 is a flow chart illustrating the operation of the microphone radio receiver remotely controlling the microphone radio transmitter.
5 is a flowchart for explaining the operation of the microphone radio system when the power of the microphone radio transmitter is turned on.
6 shows a microphone radio system according to another embodiment of the present invention.
7 is a view for explaining how a microphone radio transmitter is mounted on a microphone radio receiver according to an embodiment of the present invention.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element may be referred to as a second element, The component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like are used to specify that there are features, numbers, steps, operations, elements, parts or combinations thereof described herein, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings attached hereto.

FIG. 1 shows a block diagram of a microphone radio transmitter according to an embodiment of the present invention, and FIG. 2 shows a block diagram of a microphone radio receiver according to an embodiment of the present invention.

The microphone radio receiver 200 may wirelessly communicate with the microphone radio transmitter 100 to output an output signal corresponding to the audio signal transmitted from the microphone transmitter 100. The microphone radio transmitter 100 may receive the first audio signal from the outside and convert the first audio signal to a digital signal to transmit the intermediate audio signal to the microphone radio receiver 200. The microphone radio receiver 200 receives the intermediate audio signal from the microphone radio transmitter 100 and converts the intermediate audio signal, which is a digital signal, to a final audio signal, which is an analog signal, and output the intermediate audio signal.

1, a microphone radio transmitter 100 includes an auto talk switch 101, processing circuits 102, 103, 104 and 106, a baseband processor 105, an RF transmit amplifier 107, a diversity antenna An RF receive amplifier 109, an LCD and notification function module 110, a button input module 111, and a battery and charging module 112. [

The auto torque switch 101 may control the power of the microphone radio transmitter 100 according to the control signals (the on-control signal or the off-control signal) transmitted from the microphone radio receiver 200. The auto torque switch 101 turns on the power of the microphone radio transmitter 100 in response to the on-control signal transmitted from the microphone radio receiver 200 and outputs the off-control signal transmitted from the microphone radio receiver 200 And can turn off the power of the microphone radio transmitter 100 in response.

The present invention can remotely control the power of the microphone radio transmitter 100 under the control of the microphone radio receiver 200 by applying the auto talk function to each of the microphone radio transmitter 100 and the microphone radio receiver 200 .

When the auto talk switch 101 powers on the microphone radio transmitter 100 in response to the on-control signal transmitted from the microphone radio receiver 200, the microphone radio transmitter 100 and the microphone radio receiver 200 And the microphone radio receiver 200 transmits the auto torque-on data signal to the microphone radio transmitter 100 at predetermined intervals, thereby making it possible to perform a wireless connection in a shortest time in the case of a data error due to surrounding environment factors And prevent the disconnection of business continuity.

The processing circuits 102, 103, 104 and 106 may include an audio input module 102, an audio amplifier 103, an audio codec 104, and an RF transceiver 106.

The processing circuits 102, 103, 104, and 106 may process the externally input initial audio signal under control of the baseband processor 105 and transmit the processed initial audio signal to the RF transmit amplifier 107 .

The audio input module 102 can receive an initial audio signal of an analog type input from the outside. At this time, the frequency of the initial audio signal may be within the audible frequency range (20 Hz to 20 KHz).

The audio amplifier 103 may filter and amplify the initial audio signal to a signal having a constant frequency bandwidth. For example, the audio amplifier 103 may filter the initial audio signal within a range of 200 Hz to 14 KHz, but the present invention is not limited thereto.

The audio codec 104 may convert the amplified initial audio signal into a digital signal. For example, the audio codec 104 may convert an initial audio signal amplified at a sampling rate of 24 bits / 44.1 KHz to a digital signal, but the present invention is not limited thereto.

The baseband processor 105 can encode the digital signal converted by the audio codec 104 and convert the digital signal into a radio frequency form by lossless compression.

The baseband processor 105 includes an auto talk switch 101, processing circuits 102, 103, 104 and 106, an RF transmit amplifier 107, a diversity antenna 108, an RF receive amplifier 109, The notification function module 110, the button input module 111, and the battery and charging module 112. [

The baseband processor 105 controls the amplification level of the RF transmission and reception amplifiers 104 and 105 through audio mute processing, transmission data error recovery and random code generation for transmission and reception synchronization, frequency hopping wireless protocol control, transmission and reception sensitivity detection, Output control, signal processing, and the like.

The baseband processor 105 may adjust the output of the RF transmit amplifier 107 in accordance with a received signal strength indication (RSSI) packet transmitted from the microphone radio receiver 200. [ The baseband processor 105 may reduce battery consumption of the microphone radio transmitter 100 by adjusting the output of the RF transmit amplifier 107 according to the strength of the signal transmitted from the microphone radio receiver 200. [ At this time, the baseband processor 105 can adjust the output of the RF transmission amplifier 107 step by step according to the intensity of the signal transmitted from the microphone radio receiver 200.

For example, the baseband processor 105 can adjust the output of the RF transmission amplifier 107 within a range of -35 dBm to 23 dBm according to the RSSI packet transmitted from the microphone radio receiver 200. The baseband processor 105 increases the output of the RF transmission amplifier 107 when the intensity of the signal transmitted from the microphone radio receiver 200 is small and the intensity of the signal transmitted from the microphone radio receiver 200 is large , The output of the RF transmission amplifier 107 can be reduced.

The RF transceiver 106 may generate a digital signal and a transmission frequency that are converted into a radio frequency form, and may mix the transmission frequency with a digital signal of the radio frequency form. According to an embodiment, the RF transceiver 103 may use a gaussian frequency-shift keying (GFSK) modulation scheme.

The RF transmission amplifier 107 may amplify the mixed transmission frequency to a specific output level. According to an embodiment, the maximum output of the RF transmit amplifier 107 may be 23 dBm.

The diversity antenna 108 is connected to the RF transmission amplifier 107 and the RF reception amplifier 109 and is capable of outputting the transmission frequency amplified by the RF transmission amplifier 107 to the microphone radio receiver 200.

The RF receiving amplifier 109 can receive and amplify the on-control signal or the off-control signal transmitted from the microphone radio receiver 200. [ According to the embodiment, the RF receive amplifier 109 can amplify the signal with a gain value of 25 dB.

The LCD and alert function module 110 may be configured to display the current state of the microphone radio transmitter 100 (e.g., a battery state) and to determine the current state of the microphone radio transmitter 100 (e.g., battery state) Vibration, sound, and silence). For example, the microphone radio transmitter 100 incorporates a vibration motor, and the user can easily confirm the display function of the microphone radio transmitter 100, such as the battery state and deviation of the communicable area, from the vibration.

The button input module 111 can control the microphone radio transmitter 100 by the user inputting a button.

The battery and charging module 112 may provide power for driving the microphone radio transmitter 100 and may charge the microphone radio transmitter 100.

2, the microphone radio receiver 200 includes an auto torque switch 201, an RF transmission amplifier 202, a plurality of diversity antennas 203, an RF receive amplifier 204, processing circuits 205 and 207 208, and 209, a baseband processor 206, a Bluetooth module 210, an NFC module 211, a loop antenna 212, a peripheral device connection module 213, an LCD display module 214, A module 215, and a button input module 216.

The auto-torque switch 201 includes an on-control signal that can remotely turn on and off the auto-torque switch 101 implemented in the microphone radio transmitter 100, An off-control signal can be generated that can wirelessly turn off the switch 101 remotely. That is, the microphone radio receiver 200 can control the power of the microphone radio transmitter 100 remotely by sending control signals to the microphone radio transmitter 100.

The RF transmit amplifier 202 may transmit the on-control signal or the off-control signal to the microphone radio transmitter wirelessly under the control of the baseband processor 206. According to an embodiment, the maximum output of the RF transmit amplifier 202 may be 23 dBm.

Each of the plurality of diversity antennas 203 may receive the intermediate audio signal transmitted from the microphone radio transmitter 100. Each of the plurality of diversity antennas 203 may perform a function of minimizing a high-frequency fading effect of the intermediate audio signal transmitted from the microphone radio transmitter 100.

The RF receiving amplifier 204 may amplify the intermediate audio signal output from each of the plurality of diversity antennas 203 and output the amplified intermediate audio signal. According to an embodiment, the RF receive amplifier 204 may amplify the signal with a gain value of 25 dB.

The processing circuits 205, 207, 208 and 209 may include an RF transceiver 205, an audio codec 207, an audio amplifier 208, and an audio input and output module 209. The processing circuits 205, 207, 208, and 209 may process the amplified intermediate audio signal output from the RF receive amplifier 204.

The RF transceiver 205 may demodulate (or convert) the amplified intermediate audio signal in a form of a frequency that can be processed by the baseband processor 206 in the RF receiving amplifier 204.

The baseband processor 206 can inverse encrypt the decompressed (or translated) data, decompress and transmit the decompressed audio signal to the audio codec 207.

The baseband processor 206 includes an auto talk switch 201, an RF transmit amplifier 202, a plurality of diversity antennas 203, an RF receive amplifier 204, processing circuits 205, 207, 208, and 209, The Bluetooth module 210, the NFC module 211, the peripheral device connection module 213, the LCD display module 214, the battery and charging module 215, and the button input module 216.

The baseband processor 206 controls the amplification level of the RF transmission and reception amplifiers 202 and 204 through audio mute processing, transmission data error recovery and random code generation for transmission and reception synchronization, frequency hopping wireless protocol control, transmission and reception sensitivity detection, Output control, signal processing, and the like.

The baseband processor 206 may adjust the output of the RF transmit amplifier 202 according to the RSSI packet transmitted from the microphone radio transmitter 100. The baseband processor 206 may reduce battery consumption of the microphone radio receiver 200 by adjusting the output of the RF transmit amplifier 202 according to the strength of the signal transmitted from the microphone radio transmitter 100. [ At this time, the baseband processor 206 can adjust the output of the RF transmission amplifier 202 in stages according to the intensity of the signal transmitted from the microphone radio transmitter 100.

For example, the baseband processor 206 may adjust the output of the RF transmit amplifier 202 within a range of -35 dBm to 23 dBm, according to the RSSI packet transmitted from the microphone radio transmitter 100. The baseband processor 206 increases the output of the RF transmit amplifier 202 when the intensity of the signal transmitted from the microphone radio transmitter 100 is small and the intensity of the signal transmitted from the microphone radio transmitter 100 is high , The output of the RF transmission amplifier 202 can be reduced.

The audio codec 207 can convert the decompressed digital audio signal into an analog audio signal in the baseband processor 206. [ The audio amplifier 208 amplifies the audio signal converted into the analog form and can perform noise filtering.

The audio input / output module 209 can output the amplified audio signal. That is, the audio input / output module 209 can output the audio signal processed by the processing circuits 205, 207, 208, and 209.

The Bluetooth module 210 can communicate with the Bluetooth device wirelessly and the NFC module 211 can communicate with the microphone radio receiver 200 and the Bluetooth radio device 200 when the microphone radio receiver 200 and the Bluetooth device are close to each other, It is possible to detect the field detection signal from the Bluetooth device. The NFC module 211 may detect the field detection signal so that the microphone radio receiver 200 is automatically paired or wirelessly connected to the Bluetooth device.

The loop antenna 212 may function to drive the NFC module 211 by receiving power from the Bluetooth device when the microphone radio receiver 200 and the Bluetooth device are close to each other.

The peripheral device connection module 213 can output the analog audio signal received from the audio codec 207 to the audio input / output module 209 without connecting the audio input / output module 209 to the external device.

The LCD display module 214 may display the current state of the microphone radio receiver 200 (e.g., the battery state).

 The battery and charging module 215 may provide power for driving the microphone radio receiver 200 and may charge the microphone radio receiver 200.

The button input module 216 may control the microphone radio receiver 200 by the user inputting a button.

FIG. 3 is a flowchart illustrating a microphone radio system according to an embodiment of the present invention, FIG. 4 is a flowchart illustrating a remote operation of a microphone radio transmitter for controlling a microphone radio transmitter, FIG. And when it is turned on, the operation of the microphone wireless system.

The microphone radio system shown in FIG. 3 may include the microphone radio transmitter 100 shown in FIG. 1 and the microphone radio receiver 200 shown in FIG.

1 to 3, a microphone wireless transmitter 100 includes an LCD and a notification function module 110 and an audio input module 102, and the audio input module 102 includes a microphone (or microphone) 102 Can be implemented. The microphone radio receiver 200 includes an LCD display module 214 and audio input and output modules 209-1 and 209-2 and the audio input and output modules 209-1 and 209-2 include speakers 209-1 and 209-2. And a microphone (or microphone) 209-2.

Referring to FIGS. 1 to 4, the microphone radio receiver 200 may generate an on-control signal or an off-control signal capable of remotely controlling the power of the microphone radio transmitter 100 (S100).

The microphone radio receiver 200 may wirelessly transmit the on-control signal or the off-control signal to the microphone radio transmitter 100 (S110).

The microphone radio transmitter 100 may turn on the power of the microphone radio transmitter 100 in response to the on-control signal or may turn off the power of the microphone radio transmitter 100 in response to the off- (S120).

According to an embodiment, when the auto-torque switch 201 in the microphone radio receiver 200 is in the ON mode, the baseband processor 206 in the microphone radio receiver 200 wirelessly transmits the on-control signal to the microphone radio transmitter 100 ). At this time, the microphone radio receiver 200 and the microphone radio transmitter 100 can be synchronously connected wirelessly. While the auto-torque switch 201 remains in the ON mode, the microphone radio receiver 200 always monitors the state of the microphone radio transmitter 100 by transmitting an on-control signal to the microphone radio transmitter 100 at regular intervals , A stable wireless communication environment can be established.

According to another embodiment, when the auto-torque switch 201 in the microphone radio receiver 200 is in the OFF mode, the baseband processor 206 in the microphone radio receiver 200 wirelessly transmits the off-control signal to the microphone radio transmitter 100). At this time, the wireless connection between the microphone radio receiver 200 and the microphone radio transmitter 100 can be released.

1 to 5, the microphone radio receiver 200 generates an on-control signal that can power on the microphone radio transmitter 100 and transmits the on-control signal to the microphone radio transmitter 100, (S200).

The microphone radio transmitter 100 is turned on in response to the on-control signal and may process the initial audio signal input from the outside to transmit the intermediate audio signal to the microphone radio receiver 200 (S210). At this time, the intermediate audio signal may be a transmission frequency amplified by the RF transmission amplifier 107.

The microphone radio receiver 200 may receive the intermediate audio signal using a plurality of diversity antennas 203, process the intermediate audio signal, and output the final audio signal (S220). At this time, the final audio signal may be a signal corresponding to the initial audio signal.

6 shows a microphone radio system according to another embodiment of the present invention.

The microphone radio system shown in FIG. 6 is substantially the same as or similar to the microphone radio system shown in FIG. 3 except that the microphone radio transmitter 100 is replaced with the mobile communication terminal 300. The mobile communication terminal 300 may serve as the microphone radio transmitter 100 illustrated in FIGS.

The mobile communication terminal 300 refers to a wireless communication terminal capable of communicating with the microphone radio receiver 200. The mobile communication terminal 300 may be a smart phone, a tablet PC, a mobile internet device (MID), an Internet tablet, a digital camera, an Internet of things (IO) everything " device, or a wearable computer.

1 to 6, when the Bluetooth module built in the mobile communication terminal 300 and the Bluetooth module 210 built in the microphone radio receiver 200 are connected, 300) Bluetooth speaker, and handsfree.

7 is a view for explaining how a microphone radio transmitter is mounted on a microphone radio receiver according to an embodiment of the present invention.

1 to 7, a user may place the microphone radio transmitter 100 on the microphone radio receiver 200 and use the charging adapter 220 to transmit the microphone radio transmitter 100 and the microphone radio receiver 200 It can be charged at the same time.

The baseband processor 206 in the microphone radio receiver 200 recognizes that the microphone radio transmitter 100 has been mounted to the microphone radio receiver 200 via the battery and charging module 215, The receiver 200 may transmit a random encryption code for synchronization to the microphone radio transmitter 100 and the microphone radio receiver 200 may store the random encryption code in an internal memory.

The microphone radio transmitter 100 receives the randomization code and the baseband processor 105 in the microphone radio transmitter 100 transmits a reception completion signal for the randomization code to the microphone radio receiver 200, The random encryption code can be stored in the internal memory.

The baseband processor 206 in the microphone radio receiver 200 compares the received complete signal with the random encryption code and performs pairing and synchronization automatically without any additional procedure for pairing each time according to the result of the comparison, Wireless systems can improve reliability in terms of security.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: microphone radio transmitter 110: LCD and notification function module
101, 201: Auto torque switch 111, 216: Button input module
102: audio input module 112, 215: battery and charging module
103, 208: audio amplifier 200: microphone radio receiver
104, 207: audio codec 203: a plurality of diversity antennas
105, 206: Baseband processor 209: Audio input / output module
106, 205: RF transceiver 210: Bluetooth module
107, 202: RF transmission amplifier 211: NFC module
108: diversity antenna 213: peripheral device connection module
109, 204: RF receiving amplifier 300: mobile communication terminal

Claims (12)

A microphone radio receiver capable of wirelessly communicating with a microphone radio transmitter comprising a second auto-torque switch,
A baseband processor;
A first auto-torque switch for generating an on-control signal capable of remotely turning on and off said second auto-torque switch and an off-control signal capable of remotely turning off said second auto- Torque switch;
An RF transmit amplifier that wirelessly transmits the on-control signal or the off-control signal to the microphone radio transmitter under the control of the baseband processor;
A plurality of diversity antennas, each of which can receive an audio signal transmitted from the microphone radio transmitter;
An RF receiving amplifier for amplifying the audio signal output from each of the plurality of diversity antennas and outputting an amplified audio signal;
A processing circuit for processing the amplified audio signal output from the RF receiving amplifier; And
And an output circuit for outputting an audio signal processed by the processing circuit,
The on-mode signal is generated when the first auto-torque switch is in the ON mode and the microphone radio receiver maintains the on-control signal at regular intervals while the first auto- Monitoring the state of the microphone radio transmitter by transmitting to the microphone radio transmitter,
Control signal is generated when the first auto-torque switch is in the OFF mode, and the radio connection between the microphone radio receiver and the microphone radio transmitter is released according to the off-control signal. The method according to claim 1,
The microphone radio receiver includes:
A Bluetooth module capable of wirelessly communicating with a Bluetooth device; And
And an NFC module for detecting a field detection signal from the Bluetooth device so that the microphone radio receiver and the Bluetooth device can communicate wirelessly when the microphone radio receiver and the Bluetooth device are in close proximity. The method according to claim 1,
Wherein the RF transmission amplifier has a maximum output of 23 dBm. The method according to claim 1,
Wherein the baseband processor adjusts the output of the RF transmit amplifier in accordance with a received signal strength indication (RSSI) packet transmitted from the microphone radio transmitter. A microphone radio transmitter capable of wireless communication with a microphone radio receiver including a first auto-torque switch,
A baseband processor;
An RF receiving amplifier for receiving an on-control signal or an off-control signal generated from the first auto-torque switch from the microphone radio receiver;
A second auto-torque switch for turning on the microphone radio transmitter in response to the on-control signal and for turning off the microphone radio transmitter in response to the off-control signal;
A processing circuit for processing an audio signal inputted from outside according to the control of the baseband processor;
An RF transmission amplifier for amplifying the audio signal processed by the processing circuit and generating an amplified audio signal; And
And a diversity antenna for transmitting the amplified audio signal to the microphone radio receiver,
Wherein the on-mode control signal is generated when the first auto-torque switch is in the ON mode and the microphone radio transmitter receives the on-mode signal from the microphone radio receiver while the first auto- Receiving the on-control signal, the microphone radio transmitter informs the microphone radio receiver of the status of the microphone radio transmitter,
Wherein the off-control signal is generated when the first auto-torque switch is in the OFF mode and the wireless connection between the microphone radio receiver and the microphone radio transmitter is released in accordance with the off-control signal. 6. The method of claim 5,
Wherein the RF transmission amplifier has a maximum output of 23 dBm. 6. The method of claim 5,
Wherein the baseband processor adjusts the output of the RF transmit amplifier according to an RSSI packet transmitted from the microphone radio receiver. A microphone radio system comprising a microphone radio transmitter including a first auto-talk switch and a microphone radio transmitter comprising a second auto-talk switch,
The microphone radio receiver includes:
A first baseband processor;
A first RF transmission amplifier for wirelessly transmitting an on-control signal or an off-control signal generated from the first auto-torque switch to the microphone radio transmitter under the control of the first baseband processor;
A plurality of diversity antennas, each of which can receive an audio signal transmitted from the microphone radio transmitter;
A first RF receiving amplifier for amplifying the audio signal output from each of the plurality of diversity antennas and outputting an amplified audio signal;
A first processing circuit for processing the amplified audio signal output from the first RF receiving amplifier; And
And a first output circuit for outputting an audio signal processed by the first processing circuit,
Wherein the first auto-torque switch is operable to remotely wirelessly turn on the second auto-torque switch and to turn off the second auto-torque switch to wirelessly turn off the second auto- - generating a control signal,
The on-mode signal is generated when the first auto-torque switch is in the ON mode and the microphone radio receiver maintains the on-control signal at regular intervals while the first auto- Monitoring the state of the microphone radio transmitter by transmitting to the microphone radio transmitter,
Wherein the off-control signal is generated when the first auto-torque switch is in the OFF mode and the wireless connection between the microphone radio receiver and the microphone radio transmitter is released in accordance with the off-control signal. 9. The method of claim 8,
The microphone radio transmitter includes:
A second baseband processor;
A second RF receiving amplifier for receiving an on-control signal or an off-control signal generated from the first auto-torque switch from the microphone radio receiver;
A second processing circuit for processing an audio signal input from the outside according to the control of the second baseband processor;
A second RF transmit amplifier that amplifies the audio signal processed by the second processing circuit and generates an amplified audio signal; And
And a diversity antenna for transmitting the amplified audio signal to the microphone radio receiver,
The second auto-torque switch turns on the microphone radio transmitter in response to the on-control signal and turns off the microphone radio transmitter in response to the off-control signal. 9. The method of claim 8,
Wherein the microphone radio transmitter is connected to the microphone radio receiver to simultaneously charge the microphone radio transmitter and the microphone radio receiver. 11. The method of claim 10,
Upon charging, the microphone radio receiver transmits a random encryption code for synchronization to the microphone radio transmitter, and stores the random encryption code. 12. The method of claim 11,
Wherein the microphone radio transmitter transmits a receive complete signal for the random encryption code to the microphone radio receiver and stores the random encryption code.
KR1020140148069A 2014-10-29 2014-10-29 Wireless microphone receiver, wireless microphone transmitter, and wireless microphone system including the same KR101524801B1 (en)

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JP2002135156A (en) * 2000-10-20 2002-05-10 Matsushita Electric Ind Co Ltd Digital wireless microphone system
KR100931566B1 (en) * 2009-04-02 2009-12-14 주식회사 엠디아이 Audio receiving apparatus using bluetooth and method thereof
KR20100046821A (en) * 2008-10-28 2010-05-07 주식회사 베라텍 Wireless microphone having ability channel access
JP2012085146A (en) * 2010-10-13 2012-04-26 Kyocera Corp Communication device, circuit component, and transmission power control method

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JP2002135156A (en) * 2000-10-20 2002-05-10 Matsushita Electric Ind Co Ltd Digital wireless microphone system
KR20100046821A (en) * 2008-10-28 2010-05-07 주식회사 베라텍 Wireless microphone having ability channel access
KR100931566B1 (en) * 2009-04-02 2009-12-14 주식회사 엠디아이 Audio receiving apparatus using bluetooth and method thereof
JP2012085146A (en) * 2010-10-13 2012-04-26 Kyocera Corp Communication device, circuit component, and transmission power control method

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