KR100381698B1 - Analogue/Digital radio broadcasting system and method - Google Patents

Abstract

The present invention improves the mutual communication method of the digital / analog wireless microphone set to improve the listening evaluation and the quality of education in connection with the broadcasting amplifier in the classroom and the seminar room, and enables the use of a large quantity of the wireless microphone set in the same area. The present invention relates to a digital / analog wireless broadcasting system and a method for expanding a wireless microphone set of 900 MHz to 40 channels, and the present invention improves the mutual communication method of the digital / analog set and solves the conventional problems. In addition, the 900MHz digital / analog system ensures clean sound quality and stable wireless communication signals without interference in adjacent areas. In addition, multi-channel wireless telephones and microphones expand the frequency capacity to be divided into 40 channels for use, thereby increasing the number of wireless telephones and microphones, and improving signal control to share one wireless telephone and microphone. The receiver is configured to form a plurality of transmit and receive pairs. Also, if a wireless communication line is established between the amplifier and the wireless microphone, even if a request for establishing another wireless micro communication line is received, the wireless microphone opened as a priority will not be opened as a pair of communication lines unless it is reset. Do not intercept during operation, and when finished, turn off the function and wait for the next command signal.

Description

Digital / analog radio broadcasting system and method thereof {Analogue / Digital radio broadcasting system and method}

The present invention relates to a digital / analog wireless broadcasting system, and more particularly, to improve the intercommunication method of a digital / analog wireless microphone set to improve listening evaluation and education quality in connection with a broadcasting amplifier in a classroom and a seminar room. The present invention relates to a digital / analog wireless broadcasting system and method for enabling the use of a large number of wireless microphone sets in a region, and to expand the 900 MHz wireless microphone set to 40 channels.

In general, a wireless microphone system includes a microphone, which is a transmitter of a typical 20 MHz to 900 MHz, and a receiver, which is a receiver, and is configured in a manner of pairing a transceiver of about 7 channels. Additional equipment includes externally mounted antennas.

The earliest wireless microphones produced and used products from 20MHz to 800MHz, and were formed as fixed pairs that cannot change the channel.

Up to 7 channels are available, and far enough frequencies are used to avoid interference with each other. If the same frequency is used in adjacent areas at the same time, it cannot be used due to interference, and a feedback phenomenon occurs.

Therefore, when using a plurality of wireless microphones in an adjacent area, it was used at a sufficiently far position to minimize the interference of the wireless microphones.

Nevertheless, if a wireless microphone with a large number of channels is necessary, a product with a different frequency band was selected and used.

In other words, the wireless microphone set used in general seminars and lecture rooms has a disadvantage that only 6 pairs of channels can be used due to the limitation of a transmission / reception channel.

In addition, when using a set of transmitting and receiving wireless microphones of the same channel in an adjacent area, it was difficult to use due to interference and feedback.

Accordingly, the present invention has been proposed to solve various problems occurring in the conventional wireless microphone system as described above.

It is an object of the present invention to improve the intercommunication method of digital / analog wireless microphone sets to improve the quality of listening evaluation and education in conjunction with broadcast amplifiers in classrooms and seminar rooms, and to use a large number of wireless microphone sets in the same area. The present invention provides a digital / analog wireless broadcasting system and a method for enabling a wireless microphone set of 900 MHz to be expanded to 40 channels.

The present invention for achieving this object,

It solves the conventional problem by improving the digital / analog set communication method, and by using the digital / analog method of 900MHz band, it ensures the clear sound quality and stable wireless communication signal without interference in the adjacent area.

In addition, multi-channel wireless telephones and microphones expand the frequency capacity to be divided into 40 channels for use, thereby increasing the number of wireless telephones and microphones, and improving signal control to share one wireless telephone and microphone. The receiver is configured to form a plurality of transmit and receive pairs.

In addition, if a wireless communication line is established between the amplifier and the wireless microphone, even if a request for establishing another wireless micro communication line is received, the wireless microphone opened as a priority is not opened as a pair of communication lines unless it is reset. It should not be intercepted while in use, and wait for the next command signal after activating the OFF function.

1 is a block diagram showing the overall configuration of a digital / analog wireless broadcasting system according to the present invention.

2 is a block diagram showing an embodiment of the wireless telephone and microphone device of FIG.

3 is a flowchart showing a digital / analog wireless broadcasting method according to the present invention.

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

100 ..... Cordless Telephone and Microphone Devices

101, 201 ..... control circuit

102 ..... transceiver circuit

103, 203 ..... Frequency synthesizer

104 ..... Transmission circuit

200 ..... wireless microphone receiver

204 ..... Interface

300 .... Audio output device

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

1 is a diagram showing the overall configuration of a digital / analog wireless broadcasting system according to the present invention.

Reference numeral 100 denotes a radiotelephone and microphone device used for a radiotelephone and a wireless microphone.

The control circuit 101 in the radiotelephone and microphone device 100 controls the entire operation of the device during the radiotelephone function and the microphone function. The transmission and reception circuit 102 is connected to a speaker, a microphone, and a keypad, and receives a voice signal and a keypad signal under the control of the control circuit 101, and outputs a signal received during a wireless telephone to a speaker. In addition, the frequency synthesizer 103 is controlled by the control circuit 101, demodulates the radio reception signal and outputs it to the speaker, and modulates the transmission signal input from the microphone and transmits it to the transmission circuit 104. The transmitting circuit 104 transmits a modulated radio frequency (voice signal) output from the frequency synthesizer 103.

Here, the wireless telephone and the microphone device 100 may operate within 100M when used as a wireless microphone function, and when used as a wireless telephone, may make a call freely in a range of about 1 km.

Reference numeral 200 denotes a wireless microphone receiver which serves to receive a radio signal output from the radiotelephone and microphone device 100 and deliver it to an audio output device to which it is connected.

The control circuit 201 in the wireless microphone receiver 200 controls the audio to be transmitted to the outside through an amplifier by interfacing the wireless signal received and received data, voice signal to the audio output device. In addition, the receiving circuit 202 receives a radio signal output from the radiotelephone and the microphone device 100 under the control of the control circuit 201, separates data and voice from the received radio signal, and separates The data is transmitted to the control circuit 201 and the separated voice signal plays a role of transmitting the frequency synthesizer 203. In addition, the frequency synthesizer 203 demodulates the wireless voice signal obtained from the receiving circuit 202 into an original voice signal and transmits the original voice signal to the interface unit 204. In addition, the interface unit 204 transmits the control data and the voice signal transmitted under the control of the control circuit 201 to the audio output device 300 to be connected.

Reference numeral 300 denotes an audio output device connected to the wireless microphone receiver 200 by wire to receive control data and audio, and to transmit the transmitted voice signal to the outside.

The audio output device 300 includes an amplifier set 301, a speaker 302 connected to the amplifier set 301, a cassette 303, and a tuner 304 that tunes an AM / FM frequency.

2 is a view showing a detailed configuration of the wireless telephone and microphone device 200.

As shown, a bell ring 211 for transmitting a signal tone when an incoming call or an intercom portable device is called, and a necklace ring that can be connected to a cord when the wireless microphone portable device 200 is worn. 212, a power on / off switch 213 which is a switch used to turn on or off the power of the portable apparatus 200, is connected to the portable apparatus 200, Earphone microphone connection jack 214 which is a sign language connection device, a transceiver 215 of 900MHz, a handset 216 which is a voice transmission device when using a telephone and an intercom, and a user's voice during a telephone call while being pressed while pressing a button MUTE Key 217, which is a call blocking key, is a channel selection button 218 which is a button for switching to a channel without interference when there is interference in a call state, and for retransmitting the last dialed number. Enter a feature , Redial / pose button (219) to enter a function to pause the dial and connect to a private exchange to memorize and use a speed dial number, transfer an extension to a third party during a call with a mobile device, and special functions of the telephone company. FLASH button 220 for inputting a function when applying for and using a service; a memory button 221 for inputting a corresponding function when dialing a stored phone number or a stored phone number; and a wireless microphone (MIC) Wireless microphone mute button 222 for inputting a function to prevent the other party's voice from being heard by the user when pressing the button, setting the intercom function, setting one-to-one or one-to-many functions, and designating the call number or group Intercom function setting button (223), which is a function button that allows the user to stop the intercom function and act as a diary microphone The broadcast-only input button 224, which is a button for inputting a function to transmit the line out to an amplifier or other broadcasting device, stops the intercom function and broadcasting function and waits for a call of the cordless telephone. Set to, the standby / call button (225) connected to the trunk line to create a standby state of the normal radiotelephone, in-use lamp (226) to visually inform the outside that the portable device is in use, the voltage of the battery for charging the portable device Charge lamp (227) to alert you visually with a warning sound when it falls below a certain voltage, dial button (228), a telephone number input button used to transmit a dial when using a telephone or intercom, intercom, broadcast-only input, general wireless Enforcement device (229) for approving the function of the phone to make a call, one-to-one, one-to-many connection method when the intercom function is set A group selector 230 for allowing a call to be approved, a microphone talker 231 functioning as a telephone or intercom, a broadcast wireless microphone, and a battery charging terminal 232 for charging the battery by supplying power from a base to the base unit. ), A battery 233 for charging without specifying a charge level as a lithium element, and a digital wired / wireless PCB 234 identical to the main PCB.

The wireless broadcasting method according to the present invention based on the digital / analog wireless broadcasting system according to the present invention configured as described above will be described in detail with reference to FIG. 3.

3 is a flowchart illustrating a digital / analog wireless broadcasting method according to the present invention. Where S represents the step.

First, in step S201, it is checked whether the wireless microphone function button is on. If the wireless microphone function button is not turned on as a result of this check, it is checked in step S101 whether the microphone function button signal is generated by the detector in the control circuit.

As a result of the check, if the microphone function button signal is generated from the control circuit detector or the wireless microphone function button is on, it is checked in step S103 whether the detector inside the control circuit detects the occurrence of interference in the microphone.

If the check result indicates that the detector inside the control circuit detects the occurrence of interference in the microphone, the microphone function switch is connected in step S104.

In step S105, an amplifier unique number is input to the keypad.

Next, in step S106, it is checked whether the unique number inputted with the amplifier matches. As a result, if the amplifier and the unique number are different, the amplifier unique number is input again in step S107.

On the contrary, if the unique number inputted with the amplifier matches, the voice is transmitted through the amplifier in step S108.

According to the above-described "digital / analog wireless broadcasting system and method" according to the present invention, it is possible to use a multi-channel wireless microphone set in an adjacent area by a digital / analog wireless telephone and a microphone and a wireless microphone receiver set. The choice of wireless microphones in gingham rooms and conference rooms offers the advantage of smoothing training and meetings.

In addition, since it can be used as a telephone in the school and can also be used as a lecture microphone, there is an advantage that can save time and double the burden of expenses.

In addition, it can provide 49 channels of advanced sound quality in the digital / analog 900MHz frequency band, thereby improving the quality of listening evaluation and education.

Claims (4)

Control circuits that control the overall operation of the device during radiotelephone and microphone functions, an on / off switch for turning on / off the speaker, microphone and power, and to prevent your voice from being heard by the other party while the phone is being pressed. Channel selector button to switch to the channel that is not present when there is no interference in call state, input the function to re-send the last dialed number, stop the dial for a while and connect it to a private exchange and use it as a memory for speed dial number. Redial / pose button for function, extension button and corresponding flash button to third party during call with mobile device, memory button for inputting relevant function to dial the stored phone number To keep your voice from being heard by the other party while pressing the button. Wireless microphone mute button to input function, intercom function setting button, intercom function setting button which is a function button to set up one-to-one or one-to-many multi-function function to call by designating counterpart call number or group, stop intercom function and act as diary microphone It stops broadcasting input button, intercom function and broadcasting function that sets the function to send line output to amplifier or broadcasting device and sets the phone standby state of wireless telephone and connects with CO line. Standby / call button to make the phone stand by, phone in use to visually inform the outside that the mobile device is in use, charging lamp to visually warn you with a beep when the battery charge level of the mobile device falls below a certain voltage Or phone number used to send dial when using intercom A transmission / reception circuit connected to a keypad comprising a dial button which is an input button and receiving a voice signal and a keypad signal under the control of the control circuit, and outputting a signal received from a wireless telephone to a speaker, and controlled by the control circuit and wirelessly A radiotelephone comprising a frequency synthesizer that demodulates a received signal and outputs it to a speaker, modulates a transmission signal input from a microphone, and transmits it to a transmission circuit, and a transmission circuit that transmits a modulated radio frequency (voice signal) output from the frequency synthesizer. And a wireless microphone device; A control circuit for controlling audio to be transmitted to the outside through an amplifier by interfacing a radio signal received and received data and a voice signal to an audio output device, and a radio signal output from the radio telephone and a microphone device under control of the control circuit A receiving circuit that separates the data and the voice from the received radio signal and transmits the separated data to the control circuit and the separated voice signal to a frequency synthesizer; and the data transmitted according to the control of the control circuit. And a wireless microphone receiver comprising an interface unit for transmitting a voice signal to an audio output device, and a frequency synthesizer for demodulating the wireless voice signal obtained from the receiving circuit into an original voice signal and transmitting the demodulated voice signal to the interface unit. It consists of an amplifier set, a speaker connected to the amplifier set, a cassette and a tuner for tuning AM / FM frequencies, and is connected to the wireless microphone receiver by wire to receive control data and audio and to transmit the received voice signal to the outside. Digital / analog wireless broadcasting system comprising an audio output device. delete delete In the digital / analog wireless broadcasting method, Checking whether the wireless microphone function button is on; Checking whether a microphone function button signal is generated when the wireless microphone function is not turned on as a result of the check; If the microphone function button signal is generated as the result of the check or the wireless microphone function button is turned on, checking whether interference in the microphone is detected; Connecting a microphone function switch when the check results in the occurrence of interference in the microphone; Checking whether the amplifier unique number matches the amplifier unique number if the amplifier unique number is input through the keypad; If the check result is different from the unique number of the amplifier and the unique number of the amplifier to re-enter the input and if the unique number is the same as the input of the amplifier and the sound transmitted through the amplifier corresponding to the unique number Digital / Analog wireless broadcasting method characterized by.