KR20100046821A - Wireless microphone having ability channel access - Google Patents

Abstract

The present invention comprises a receiver having a charging function and a plurality of wireless microphones, and a liquid crystal panel capable of displaying a channel on the front of the receiver body, a tack switch capable of changing the channel, and a plurality of charging grooves for charging a wireless microphone on the top. By inserting it into the charging groove to charge the wireless microphone, the channel information and the unique number can be delivered automatically along with the power supply for charging. If the voice signal is not input from the wireless microphone transmitter for more than 3 minutes, the power is automatically turned on. The present invention relates to a wireless microphone having an automatic channel access function and a power off function to be turned off.

The present invention described above,

When the wireless microphone and the receiver are inserted into the charging groove of the receiver to charge the wireless microphone, the wireless microphone and the receiver recognize this through the charging terminal, and the wireless microphone enters a standby state for receiving channel data and a unique number (ID). When the channel information and the unique number (ID) are converted into switching data through the charging power line (+ line), and the data and the charging power are transmitted to the wireless microphone at a time difference, the wireless microphone receives the data and stores the data in the memory device. It can be supplied and charged to the internal battery, allowing the user to automatically adjust the channel and frequency of the wireless microphone and receiver during charging, without the user having to cumbersomely select or manipulate each receiver and wireless microphone channel and frequency setting. Allow the setting to be made.

And if the input of the audio signal to the transmitter of the wireless microphone does not pass for about 3 minutes, the power of the wireless microphone (transmitter) is automatically turned off (off), it is characterized by having power efficiency, efficiency of radio wave propagation and productivity.

Description

Wireless microphone having ability channel access with channel access and power off

The present invention relates to a wireless microphone having a channel access function and a power-off function. Specifically, a liquid crystal display panel and a channel configured to display a channel on a front surface of the receiver body while being configured with a receiver having a charging function and a plurality of wireless microphones are provided. By creating a plurality of charging grooves for charging the wireless microphone at the top of the tack switch that can be changed, and inserting the charging groove to charge the wireless microphone, the channel information and the unique number along with the charging power are automatically set up. The present invention relates to a wireless microphone having a channel access function and a power off function that automatically turn off the power when a voice signal is not input for more than 3 minutes.

In general, wireless microphones are widely used in various event venues, academic classrooms and karaoke, churches, etc. because of the convenience that users can use while moving freely without any obstacles caused by lines.

In the case of RF frequency type wireless microphone, communication should be made by matching the frequency channel of the wireless microphone and the wireless microphone receiver, which is 20MHz ~ 900MHz, to 1: 1.

Since the wireless microphone is operated by the built-in battery, when the use is completed, the power switch is turned off, and the wireless microphone is inserted into the charging groove to charge the battery until the next use.

On the other hand, in the case of using a wireless microphone in a karaoke having a plurality of rooms, the wireless microphone used in each room is preset and operated in different frequency channels.

For example, if one or more of the wireless microphones in your room has a problem with your wireless microphone, you should replace it with another wireless microphone quickly.

At this time, the administrator checks the previously set frequency channel by opening and closing the external case of the wireless microphone in which the problem occurs, or checking the frequency channel set in the wireless microphone receiver, and then operating the channel switch of the new wireless microphone to operate the wireless microphone. Same setting as the frequency channel.

However, the wireless microphone's channel switch cannot be easily touched to prevent user-failure, and because it is installed in a location that is difficult to operate, it takes time for the administrator to replace the problematic wireless microphone or change the frequency channel. It takes about 5 minutes or more, and users who do not have enough knowledge of this can have a lot of difficulties in changing the channel.

Therefore, when a problem occurs in the wireless microphone in a karaoke, academy classrooms and various event venues using a wireless microphone, it causes a great inconvenience to customers or users who attend lectures and events because of the time it takes to replace the wireless microphone. There was this.

Accordingly, Patent Application No. 10-2004-0075284 dated September 20, 2004 (channel access device for a wireless microphone for karaoke) has been proposed,

This, on the rear of the main body to form a power jack for the connection of the power line for receiving power from the outside and an audio jack for the connection of the stereo voice signal line to deliver the user's voice signal to a normal karaoke device,

Dip switches are formed on the front surface of the main body provided with a plurality of receiving grooves at the top so that a channel of a frequency can be arbitrarily selected.

A limit switch was installed at the position where the lid was opened and closed so that the microphone could be disinfected by supplying power for a predetermined time with an ultraviolet lamp only when the lid was completely closed.

However, according to the channel access apparatus of the conventional karaoke wireless microphone as described above, as shown in FIG. 5A, three terminals such as a charging power line [plus (+)], a data transmission signal line, and a ground line [minus (-)] are provided. Because it is composed of a lot of contact failure can occur more than using two terminals at the time of contact, it can be a rise factor of productivity and cost.

In addition, Patent Application No. 10-2005-0056671 dated June 29, 2005 (wireless microphone transmission and reception device) was proposed,

This includes a plurality of wireless microphones for transmitting a voice signal through a frequency channel,

A separate charging cradle for applying the frequency channel data set with a channel switch to the wireless microphone,

The audio device is configured to output an electrical voice signal restored by the receiver of the wireless microphone to restore the electrical voice signal transmitted from the wireless microphone.

However, in the conventional wireless microphone transceiver as described above, the channel data provided from the control unit to the power supply unit is superimposed and provided through a capacitor to the charging power, and thus the power and data signals are mixed as shown in FIG. 5B. There is a disadvantage in that the cost is increased because a configuration for converting the mixed signal and a configuration for reducing the data signal in the mixed signal are required.

Accordingly, the present invention is to solve the conventional problems as described above, the liquid crystal display panel and the tack switch which can change the channel and the channel can be displayed on the front of the receiver body while the receiver having a charging function and a plurality of wireless microphones The wireless microphone is formed on the top and the top to form a plurality of charging grooves for charging by inserting the charging groove to charge the wireless microphone can be automatically set the channel by passing the channel information and unique number along with the charging power and wireless microphone transmitter It is an object of the present invention to provide a wireless microphone having a channel access function and a power off function for automatically turning off the power when no voice signal is input for more than 3 minutes.

Wireless microphone with a channel access function and a power off function of the present invention for achieving the above object,

Two charging grooves for charging the wireless microphone at the top while forming a receiver having a charging function and two sets of wireless microphones, forming a liquid crystal panel for displaying a channel on the front of the receiver body and a tack switch for changing the channel. Form the

When the wireless microphone is inserted into the charging groove of the receiver to charge the wireless microphone, the wireless microphone and the receiver recognize this through the charging terminal.

The wireless microphone is in a standby state capable of receiving channel data and a unique number (ID), and the receiver converts the channel information and the unique number (ID) into switching data through a charging power line and transmits the data in a time of about 10 ms to 1000 ms. Receive it and store it in the memory,

The receiver keeps the wireless microphone supplying charging power for charging after sending the data, so that the user does not need to operate the dipswitch or other selector switch to set the channel and frequency of each receiver and the wireless microphone. Automatically set the channel and frequency of the wireless microphone and receiver during charging through the charging terminals of (+,-) only.

The wireless microphone is configured to automatically turn off the power of the wireless microphone including the transmitter when the user's voice signal is not input for more than 3 minutes, thereby eliminating unnecessary waste of power and having an efficiency of radio waves. It features.

According to the wireless microphone having a channel access function and a power-off function of the present invention as described above, a liquid crystal display panel and a channel which can display a channel on the front of the receiver main body can be changed while the receiver has a charging function and a plurality of wireless microphones. The tack switch and the top can form a plurality of charging grooves for charging the wireless microphone,

If you insert it into the charging groove to charge the wireless microphone, you can set the channel automatically by passing the channel information and the unique number along with the charging power.If the voice signal is not input from the wireless microphone transmitter for more than 3 minutes, the power is automatically turned off. Since the power is automatically turned off even after the power is turned on after the test, there is no need to find a product shipped with the power turned on, and it prevents unnecessary power consumption even during use.

In addition, there is an effect such as not generating unnecessary electrons from the wireless microphone in the receiver.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a diagram showing the overall configuration of a wireless microphone having a channel access function and a power off function according to the present invention.

The user's voice is converted into a voice signal from a microphone unit or condenser microphone, and then transmitted and transmitted wirelessly. In the state of being inserted into the charging groove 21 of the receiver 20, the charging power output terminal of the receiver not shown in the figure is charged. Wireless microphone (1) for receiving the charging power and channel information and unique number (ID data) for charging power input terminal,

A channel frequency that can be arbitrarily changed by the tack switch 23 while transmitting the sound signal transmitted from the wireless microphone 1 to a sound device (not shown in the drawing) and outputting sound. The receiver 20 sends the channel information corresponding to the identification number (ID data) and the charging charging power to the wireless microphone 1 through the charging power output terminal of the charging groove 21 to automatically set the channel. ) Is composed of.

2 illustrates a configuration of a wireless microphone including the transmitter of the present invention.

A voice signal input unit 2 capable of converting and inputting a user's voice into an electrical signal by means of a microphone unit and a condenser microphone;

A transmission voltage controlled oscillator (VCO) 4 for modulating the electrical signal input from the voice signal input unit 2 through the voice signal amplifier 3;

An RF transmitter (5) for amplifying the broadcast wave output from the transmission voltage controlled oscillator (4) and transmitting it through a transmission antenna (6);

When the electrical signal input from the voice signal input unit 2 is received, the voice signal level converting unit 7 converts the voice signal into a constant direct current (DC) and transmits the voice signal to the transmitter (CPU) 8 voice signal detection port. )Wow,

The voice signal detection port detects the presence or absence of a signal from the voice signal level converting unit 7, and if no signal is present for more than 3 minutes, short-circuits the power of the RF output power control unit 9 through the RF output power control port. Blocking the power supply of the RF transmitter 5 prevents unnecessary battery consumption and generation of unused frequencies, and simultaneously receives channel information and unique number (ID data) of the changed frequency from the receiver 20. A transmitter controller 8 for outputting channel information to change the set frequency channel;

A phase locked loop (PLL) 10 for changing to a corresponding frequency band when the changed channel information is received from the transmitter controller 8;

A battery (BATT) 12 connected to the receiver 20 and receiving and charging the charging power through the charging power input terminal 11 using only two terminals, and then supplying the charging power to the internal operating power;

When the channel information, the unique number (ID data), and the charging power, which are supplied to the charging power input terminal 11 and the charging power are input to the base of the transistor Q1, 0 and 1 are binary numbers through the collector. (Binary) Code transfer to the charge detection and data input port of the transmitter control unit (CPU) 8 and stored in the internal flash memory in the transmitter control unit 8 to turn on the power switch (14) In this case, it is composed of charge sensing and data conversion units 13 generating a frequency to a stored channel and transmitting an ID to a receiver.

The wireless microphone 1 converts the channel information and the unique number (ID) into switching data through the charging power line in the receiver 20 in a standby state capable of receiving the channel data and the unique number (ID), and has a range of about 10 ms to 1000 ms. When sent in time, it is received and stored in the memory device.

The charge detection and data conversion unit 13 will be described in more detail.

The base of the transistor Q1 of the charge sensing and data conversion unit 13 connected to the charge power input terminal 11 and the cathode (+) and the resistor R1 of the diode D1 is not charged. (12) is connected to the resistor (R1) and the anode (-) of the diode (D1), so the reverse voltage can not flow and maintains a state of "0" which is normally low.

In this state, the charging power output terminal (not shown) of the receiver 20 and the charging power input terminal of the wireless microphone 1 are inserted into the charging groove 21 of the receiver 20 for charging. 11) and a high "1" is input to the transistor Q1 base of the charge sensing and data conversion unit so that a binary number (data) and a charge sensing state can be output to the collector.

3 illustrates the configuration of the receiver of the present invention in detail.

When the wireless microphone 1 is inserted into the charging groove 21, the charging power output terminal 24 of the receiver 20 connected with the charging power input terminal 6,

A power supply unit 25 for supplying charging power for charging to the charging power output terminal 24 while receiving DC power from the outside and supplying power for internal operation;

A channel change switch unit 26 of the tack switch 23 which transmits the channel information set to an arbitrary channel by the user from the plurality of channels to the receiver controller 25 so as to be displayed and stored through the channel display unit 22;

Recognizing the state in which the wireless microphone 1 is inserted into the charging groove 21 through the charging detecting unit 27, the data of the channel information and the unique number (ID) stored in the reservoir inside the data out and the charging port A receiver controller 28 for switching the charging power supplied from the power supply unit 25 by outputting through the receiver;

A charging unit and a data transmission unit 29 for converting charging power into switching data based on the channel information and the unique number (ID) data transmitted from the receiver control unit 28;

An RF receiver 31 for receiving and demodulating a carrier wave of a set frequency transmitted from the wireless microphone 1 through a reception antenna 30;

A voice output amplifier 32 which amplifies the detected audio signal by demodulating in the RF receiver 31 and transmits the detected audio signal to an external audio device;

ID data conversion unit for filtering only the unique signal (ID data) of the audio signal sound (Audio) detected through the RF receiver 31 to convert to binary (binary) to the receiver control unit (CPU) 28 With 33,

A phase locked loop (PLL) 34 for adjusting the channel data value set in the receiver controller (CPU) 28 through the channel change switch unit 26;

It is composed of reception voltage controlled oscillators (VCOs) 35 which determine a frequency according to the channel data adjusted by the reception phase locked loop (PLL) 34.

The automatic channel access apparatus of the wireless microphone according to the present invention configured as described above allows the wireless microphone 1 to receive the user's voice wirelessly to transmit the voice signal, and to sound the voice signal transmitted from the wireless microphone 1. The receiver 20 which transmits the sound to the device and outputs the sound through the output power output terminal 24 of the charging groove 21 transmits the charging power, the channel information, and the unique number ID with a time difference, Regarding the wireless microphone system that automatically sets and charges the channel,

If each channel is set to an arbitrary channel through the channel change switch unit 26 among the plurality of channels, the selected channel information is stored in the receiver control unit 28 and the reception phase fixing loop ( When data is sent to the PLL (34), the transmission voltage controlled oscillator (VCO) 35 is changed to the changed channel and is ready for reception.

In this state, when the wireless microphone 1 is inserted into the charging groove 21 of the receiver 20 and charged, the charging power input terminal 11 of the wireless microphone 1 and the charging power output terminal 24 of the receiver 20 are charged. ) Will come into contact with each other.

At this time, the power supply 25 for supplying the power for the operation of the receiver 20 is supplied to the charging groove 21 to supply the charging power required for charging to receive the DC power (DC) from the outside.

The receiver controller (CPU) 28 that recognizes the state in which the wireless microphone 1 is in contact with the charging groove 21 of the receiver 20 through the charging sensing unit 27 is stored in an internal fresh memory (Flash Memory). The charging power supplying the channel information from the power supply unit 25 to the charging unit and the data transmission unit 29 is converted into charging data through the data out and the charging port of the receiver control unit (CPU) 28 to "0". And "1" are transmitted in a waveform as shown in FIG. 4 in binary to be input to the transmitter control unit (CPU) 8 of the wireless microphone 1.

The charging detector 27, the charging unit and the data transmission unit 29 of the receiver 20 will be described in detail.

As shown in FIG. 3, the emitter is always connected to the power source using the PNP transistor Q2 and the base is connected to the charging power output terminal 24 so that the wireless microphone 1 receives the charging groove of the receiver 20 ( 21) If a voltage difference (a high voltage at the emitter and a low voltage at the base) is generated between the emitter and the base of the PNP transistor Q2 when it is inserted into the contact, the NPN transistor Q3 is turned on. On) is input to the charge detection input port of the receiver control unit (CPU) 20, the receiver control unit (CPU) 28 recognizes this, the data out and the charging port has a time of about 10ms ~ 1000ms for the first time When transmitting the PNP transistor (Q4) having a medium power or a large power capacity through the NPN transistor (Q5) of the charging unit and the data transmission unit 29 to the switching data to transmit the waveform as shown in Figure 4 and then Continue charging

1 is a block diagram showing the overall configuration of the present invention

Figure 2 is a block diagram showing the configuration of a wireless microphone including a transmitter of the present invention.

3 is a block diagram showing in detail the configuration of the receiver of the present invention;

Explanation of symbols on the main parts of the drawings

1: wireless microphone 4: transmit voltage controlled oscillator (VCO)

5: RF transmitter 7: voice signal level converter

8: transmitter control unit (CPU) 9: RF output power control unit

10: PLL (fixed phase fixed loop) 11: Charging power input terminal

13: charge detection and data conversion unit 20: receiver

22: channel display unit 24: charging power output terminal

26: channel change switch unit 27: charge detection unit

28: receiver control unit (CPU) 29: charging unit and data transmission unit

33: ID data conversion section 34: Receive phase locked loop (PLL)

35: Receive Voltage Controlled Oscillator (VCO)

Claims (2)

Receives the user's voice and wirelessly transmits the voice signal, and receives the charging power and channel information and the unique number (ID data) through the charging power output terminal 24 of the charging groove 21 of the receiver 20. The wireless microphone 1 transmits the voice signal transmitted from the wireless microphone 1 to the sound device, and outputs the sound to the sound device, and the charging power and the charging power supply itself through the charging output power terminal 24 of the charging groove 21. In the automatic channel access apparatus of a wireless microphone composed of receivers 20 for transmitting the channel information and the unique number (ID data) corresponding to the channel frequency of the radio microphone 1 to set the channel, The wireless microphone 1, A voice signal input unit 2 capable of converting a user's voice into an electrical voice signal and inputting the same; The voice signal input unit 2 receives the electric voice signal through the voice signal level converter 7 and converts the voltage through the voltage controlled oscillator 4 and outputs the power automatically when there is no voice input for more than 3 minutes. A transmitter controller 8 for turning off the lamp, The channel information and unique number (ID data) are initially supplied to the charging power supplied through the two charging power input terminals 11 at the contact portion during charging. Channel access, characterized in that consisting of a charge sensing and data conversion unit 13 for receiving for 10ms to 1000ms to be transmitted to the transmitter control unit (CPU) (8) and then to supply the charging power to the battery 12 to charge Wireless microphone with function and power off function. The method of claim 1, The receiver above, When the wireless microphone 1 is inserted, the insertion groove 21 of the receiver to allow the charging power input terminal 11 of the wireless microphone 1 and the charging power output terminal 24 of the receiver to contact each other, A power supply unit 25 for supplying power for charging while receiving power from the outside and supplying power for internal operation; If the wireless microphone 1 is inserted into the charging groove 21 in the state of storing the channel information set through the channel change switch unit 26 among the plurality of channels, the stored channel information is stored in the charging unit and the data. A receiver control unit 28 for supplying charging power while supplying to the transmission unit 19 and transmitting charging power by switching data into channel information and unique number (ID data) at a time of about 10ms to 1000ms, and A voice output amplifier 32 for demodulating the broadcast wave received from the wireless microphone 1 through the antenna 30 via the RF receiver 31 and outputting an electrical voice signal; The channel characterized in that composed of the ID data conversion unit 33 to filter out only the inherent variation of the broadcast wave transmitted through the RF receiver 31 and converted to a binary (binary) to pass to the receiver control unit 28 Wireless microphone with access function and power off function.

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