KR100641135B1 - A method and a apparatus of operating wireless microphone by using mobile phone - Google Patents

Abstract

The present invention operates in a wireless microphone mode by using an additional function of a mobile terminal and receives the signal from a wireless amplifier. The audio signal is converted into an electrical signal and input, and the electrical signal is converted into an audio signal. part; A control unit connected to the audio unit and selectively controlling the audio signal output path setting of the audio unit according to the selection; A microphone wireless unit which is connected to the control unit and converts an input voice level signal into a tuned radio amplifier frequency and transmits the radio signal; And a mobile communication wireless unit connected to the control unit and configured to wirelessly transmit and receive a voice level signal at a frequency allocated to mobile communication, and further include a built-in microphone wireless unit when the mobile terminal is selected and operated in a wireless microphone mode. A start process of determining whether a transmission frequency and a reception radio frequency of the external radio amplifier are synchronized; If it is determined that the transmission frequency of the mobile terminal and the reception frequency of the radio amplifier are not synchronized, a correction process of directly inputting the reception frequency of the radio amplifier to synchronize the transmission frequency of the microphone wireless unit; When a voice level signal is input from the audio terminal of the portable terminal, the microphone process operates to operate as a wireless microphone. By using a simple operation, the portable terminal is replaced with a wireless microphone, and a plurality of portable terminals are operated as a wireless microphone. There is an effect such as not having to prepare a wireless microphone.

Description

Wireless microphone device and method of mobile terminal {A METHOD AND A APPARATUS OF OPERATING WIRELESS MICROPHONE BY USING MOBILE PHONE}

1 is a general functional block diagram of a mobile communication system;

2 is a flowchart illustrating a method for operating a portable terminal according to the prior art;

3 is a functional diagram of a wireless microphone device of a mobile terminal according to the present invention;

4 is a detailed functional configuration of the microphone wireless unit according to the present invention;

5 is a flowchart of a wireless microphone method of a mobile terminal according to the present invention.

          ** Explanation of symbols on the main parts of the drawing **

100: portable terminal 110: audio unit 120: control unit

130: microphone wireless section 132: local oscillation section 134: mixer section

136: wireless unit 138: frequency comparison unit 140: mobile communication wireless unit

The present invention relates to an additional function of a wireless microphone of a mobile terminal. In particular, the mobile terminal is selected and set to operate in a wireless microphone mode, and the transmission frequency of the microphone wireless unit is tuned to match the reception frequency of a separate wireless amplifier. The present invention relates to a wireless microphone apparatus and method for a portable terminal for wirelessly transmitting high quality voice signals.

Mobile terminal (MS: MOBILE STATION) is a state-of-the-art wireless communication device that has the advantage of communicating by direct wireless connection with the other party anytime and anywhere while moving freely through the service area of the registered mobile communication system.

As described above, the convenient communication equipment that communicates with the other party anytime and anywhere by wirelessly communicating with the other party has a small amount of time used for actual communication and a large amount of time to carry in a standby state for communication. There is a problem of extremely low usage time or operation rate.

In order to increase the operation or use rate of the mobile terminal for mobile communication as described above, it is to provide a mobile communication service provider to use services such as game or wireless Internet access, short message transmission, video message transmission, etc. at a cost of communication. It is an additional service of the system, and various functions such as phone book record, memo record, message record, schedule management, game, camera function, electronic calculator function, alarm function, etc. are built into the portable terminal by the manufacturer and are self-contained without burden of communication line fee. It is an additional function of the portable terminal to use.

Since the additional service is connected to the mobile communication system and occupies the corresponding channel, the channel occupancy fee is generated, and the additional function does not incur the royalties due to channel occupancy because the additional function uses the built-in additional function of the mobile terminal itself. However, since the conventional additional functions are mostly related to communication, there is a limited problem that cannot be directly utilized in real life.

Accordingly, there is a need for the development of adding a function of a wireless microphone connected to a wireless amplifier as an additional function to the portable terminal as an additional function of the portable terminal applied to the real life.

Hereinafter, the additional functions of the portable terminal according to the prior art will be described with reference to the accompanying drawings.

1 is a general functional configuration diagram of a mobile communication system, and FIG. 2 is a flowchart of a method for operating a mobile terminal according to the prior art.

Referring to FIG. 1, a general mobile communication system includes: a mobile terminal (MS) 10 for freely moving in a service area of a subscribed and registered mobile communication system at any time and anywhere to wirelessly connect with a counterpart; A base station (BS) 20 for wirelessly connecting to the portable terminal 10 to transmit and receive communication signals and to form a service area; Mobile Switching Station (MSC: MOBILE SWITCHING), which connects to the base station 20, analyzes and switches the call connection request signal, and switches (SWITCHING) so as to establish a communication path and transmit the corresponding communication signal, and to monitor and control the operation of the entire mobile communication system. CENTER) 30.

Referring to the mobile communication system having the above configuration in detail, the base station 20 forms a certain service area, and transmits and receives communication signals with a plurality of mobile terminals 10 in the formed service area, the base station as described above Since 20 are distributed across the country in a number of adjoining states, the whole country is formed as a mobile communication service area.

The mobile terminal 10 is a wireless communication with the other party at any time and anywhere while freely moving in the service area formed by the plurality of base stations 20, the voice level communication, including additional services provided by the mobile communication system By using a text message service using letters and symbols, the mobile switching center 30 analyzes a dialing signal which is a call connection request signal of the mobile terminal 10 applied through the base station 20, The communication path connection with the other party is established through switching.

The portable terminal 10 having the communication path set as described above communicates using a voice level signal or performs data level text message communication as an additional service, and performs video message communication, real-time video communication, wireless Internet connection, and online game. .

When the mobile terminal 10 is connected to the base station 20 and does not use a communication service or an additional service by a mobile communication system, the phone terminal record management, memo recording, message recording, Use schedule management, games, camera functions, electronic calculator functions, alarm functions, or stay on standby.

Hereinafter, with reference to the accompanying Figure 2, the operation method of the portable terminal according to the prior art will be described.

The mobile terminal 10 includes a first step (S10) of determining whether an additional function mode provided by itself is selected and operated; A second step (S20) of displaying a menu of all additional functions provided by the portable terminal on the display unit when the additional function is determined in the step S10; A third step S30 of determining whether one of the additional functions displayed in the step S20 is selected; A fourth step (S40) of returning to the first step (S10) if the additional function is not determined based on the determination in the step (S30) and operating the corresponding additional function if the additional function is selected; A fifth step (S50) of determining whether to select a communication mode when the additional function mode is not selected based on the first step (S10); A sixth step (S60) of operating the mobile communication service when the communication mode is selected in the step (S50); A seventh step S70 of determining whether to select an additional service when the communication mode is not selected in the step S50; If it is determined in step S70 that the additional service is not selected, the method returns to the first step S10 and when the additional service is selected, the eighth step S80 of operating the selected additional service is performed.

Hereinafter, a method of operating a mobile terminal according to the related art as described above will be described in detail with reference to the accompanying drawings.

The portable terminal 10 determines whether the additional function mode is selected to operate the built-in additional function (S10), and displays a menu of all the built-in additional functions when the additional function mode is selected in the determination (S10). In operation S20, it is determined whether a specific additional function is selected (S30). When the specific additional function is selected in the determination (S30), the selected additional function is operated and terminated (S40).

In addition, if the additional function mode is not selected by the determination in the first step S10, it is determined whether the communication mode is selected (S50), and when the communication mode is selected in the determination (S50), the mobile communication service is operated. And ends (S60).

In addition, when the communication mode is not selected by the fifth step (S50), it is determined whether one additional service is selected from various additional services provided by the mobile communication system (S70), and the additional service is determined in the determination. If is not selected, it returns to the first step (S10), and if any one of the additional services provided by the mobile communication system is selected, the corresponding additional service is operated (S80) and ends.

However, as described above, the additional function provided by the mobile terminal 10 according to the related art includes a phone book for recording and managing a phone number that is frequently accessed, a memo function for recording a simple memo without a writing instrument, and a message without a writing instrument. There are message recording, schedule management to manage schedules, in-house games, camera functions to shoot and record video, electronic calculator functions to perform calculations, alarm functions to inform time information, and so on.

Therefore, the conventional technology as described above has a problem in that it is not possible to provide a wireless microphone function for wirelessly transmitting a voice level signal to a wireless amplifier which is used for speech or entertainment to a large public in everyday life.

The present invention is an additional function of a mobile terminal, and adds a wireless microphone mode function for wirelessly transmitting a voice level signal to a separate external wireless amplifier as an additional function, and in particular, wirelessly tuned to the wireless reception frequency of the wireless amplifier. It is an object of the present invention to provide a wireless microphone apparatus and method for a portable terminal for wirelessly transmitting a voice signal at a transmission frequency.

The present invention devised to achieve the above object, the audio unit converts the applied audio signal to an electrical signal and inputs and converts the electrical signal into a voice signal and outputs; A control unit connected to the audio unit and selectively controlling the audio-level signal output path setting of the audio unit by corresponding selection; A microphone wireless unit which is connected to the control unit and converts an input voice level signal into a tuned radio amp frequency and transmits the radio signal; And a mobile communication wireless unit connected to the control unit and configured to wirelessly transmit and receive a voice level signal at a frequency allocated to mobile communication.

In addition, the present invention devised to achieve the above object, when the mobile terminal is selected and operated in a wireless microphone mode, the start of judging whether the transmission frequency of the built-in microphone wireless unit and the reception radio frequency of the external radio amplifier is synchronized. Process; If it is determined that the transmission frequency of the mobile terminal and the reception frequency of the wireless amplifier are not synchronized in the starting process, directly adjusting the reception frequency of the wireless amplifier to synchronize the transmission frequency of the microphone wireless unit; When a voice level signal is input from the audio unit of the mobile terminal of the correction process characterized in that the microphone process for operating to operate as a wireless microphone.

Hereinafter, a wireless microphone apparatus and method of a portable terminal according to the present invention will be described with reference to the accompanying drawings.

3 is a functional configuration diagram of a wireless microphone device of a mobile terminal according to the present invention, FIG. 4 is a detailed functional configuration diagram of a microphone wireless unit according to the present invention, and FIG. Is a flowchart of a wireless microphone method of a mobile terminal.

3 and 4, the wireless microphone of the mobile terminal 100 according to the present invention, the audio unit 110 converts and inputs the voice signal into an electrical signal, and converts and outputs the electrical signal into a voice signal (110) )Wow,

When the mobile terminal 100 is selected to operate as a wireless microphone by selecting and controlling the voice level signal output path setting of the audio unit 110 by connecting to the audio unit 110 and analyzing the control command. A control unit 120 for setting and controlling a voice level signal transmission path to output the voice level signal input from the audio unit 110 to the microphone wireless unit 130;

In order to convert and transmit the voice level signal, which is connected to the control unit 120 and input into a separately selected external wireless amp radio reception frequency signal, a radio transmission frequency is set in synchronization with a radio reception frequency signal applied from an external radio amp. A local oscillation unit 132 for generating a local oscillation frequency signal for converting an input signal into a radio transmission frequency signal by voltage control; A mixer unit 134 for mixing the frequency signal of the local oscillator 132 and the voice level signal input from the controller 120; A radio unit 136 for inputting a signal of the mixer unit 134 and converting the signal into a reception frequency signal of a radio amplifier for wireless transmission; A microphone wireless unit 130 including a frequency comparison unit 138 for comparing the transmission frequency signal of the radio unit 136 with the external radio amplifier reception frequency signal and outputting a control signal corresponding to a difference as a voltage signal;

The mobile communication wireless unit 140 is connected to the control unit 120 and wirelessly transmits and receives a voice level signal to a radio frequency signal allocated to mobile communication.

In addition, the local oscillator 132 is configured to adjust the generated frequency according to the voltage control signal applied from the frequency comparator 138.

Hereinafter, the wireless microphone device of the mobile terminal according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

The mobile terminal 100 may be switched to a wireless microphone mode, which is one of additional functions, in a communication mode state by selection, and used as a wireless microphone. The controller 120 recognizing the above selection is input from the audio unit 110. Blocks a path from which the voice level signal is applied to the mobile communication wireless unit 140 and sets the corresponding path to be applied to the wireless microphone 130.
When used as a wireless microphone as described above, the radio amplifier is separately provided to the outside and the radio frequency signal separately allocated to the radio frequency signal is transmitted in one direction.
The radio amplifier generally uses radio frequency signals in a band of 20 to 50 KHz, wirelessly receives a voice level signal wirelessly transmitted from the wireless microphone in one direction, and amplifies the wireless level voice signal to a predetermined level. It can be used for performances, communication and command control in places where many people are gathered because it can transmit voice level signals to many people without being connected by wire.

The microphone wireless unit 130 applies a voice level signal input from the audio unit 110 to the mixer unit 134 under the control of the control unit 120, and a local oscillation unit 132 to the mixer unit 134. The local oscillation frequency is applied simultaneously.

The mixer unit 134 mixes the input voice level signal and the local oscillation frequency and up-modulates the high frequency signal to the radio unit 136, and the radio unit 136 appropriately applies the input high frequency signal. Amplify and adjust wirelessly through the antenna.

As described above, the frequency of the voice level signal wirelessly output through the wireless unit 136 of the microphone wireless unit 130 is, for example, in the range of 20 KHz to 50 KHz, and the wireless amplifier can wirelessly receive the signal. Match the frequency range of the signal.

The radio frequency wirelessly received by the radio amplifier and the radio frequency wirelessly transmitted by the microphone wireless unit 130 of the portable terminal should be matched or tuned. In order to tune as described above, the frequency comparison unit 138 At the same time, directly inputs a frequency signal wirelessly received from the external wireless amplifier, and inputs a frequency signal wirelessly transmitted from the wireless unit 136 and outputs a frequency signal input through each path as described above. In comparison, a control signal corresponding to the frequency difference is output to the local oscillator 132.

The local oscillator 132 of the microphone wireless unit 130 corrects the local oscillation frequency generated by the control signal applied from the frequency comparator 138 to increase or decrease the local oscillation frequency. When the output frequency signal matches the frequency of the external radio amplifier wirelessly received, and the corresponding control signal for frequency adjustment is not input from the frequency comparator 138, the local oscillator 132 is finally set. Local oscillation frequency is continuously generated and output.

The frequency comparator 138 directly inputs a reception frequency of the radio amplifier through a separate path for tuning the radio reception frequency of the external radio amplifier to match the transmission frequency of the microphone wireless unit 130. When the transmission frequency output from the radio unit 136 is not the same as the reception frequency of the radio amp, a control signal corresponding to the difference is output. Block the receive frequency input from an external radio amp.

In order to directly receive a reception frequency from an external separate wireless amp from the frequency comparison unit 138 of the portable terminal microphone wireless unit 130, a corresponding cord of cord provided in the external wireless amp is used. The code is also connected to the frequency comparator 138 of the microphone wireless unit 130 of the portable terminal 100 and includes a jack for inputting a frequency signal.

Therefore, the mobile terminal 100 of the present invention as described above is used as a wireless microphone by the wireless microphone mode selection, when using a plurality of the mobile terminal 100 as described above, one wireless amp in a conference room or lecture room, etc. Can be used simultaneously.

Hereinafter, a wireless microphone method of a mobile terminal according to the present invention will be described with reference to FIG.

When the mobile terminal 100 is selected and operated in a wireless microphone mode, the control unit 120 determines whether the microphone wireless unit 130 and the wireless amplifier separately provided outside are tuned to match the transmission / reception frequency. Analyzing the corresponding control command to determine whether it is selected to operate in a wireless microphone mode (S100); When the wireless microphone mode is selected in the confirmation of the process (S100), it is determined whether or not the transmission frequency of the microphone wireless unit 130 of the mobile terminal 100 is tuned to match the external wireless amp reception frequency. The starting process consisting of the process (S110),

In the start process, if it is determined by the control unit of the mobile terminal 100 that the transmission frequency of the microphone radio unit 130 and the reception frequency of the radio amplifier is not tuned (TUNING), the radio reception frequency of the radio amplifier Inputting directly to the microphone wireless unit 130 of the portable terminal 100, and inputting the reception frequency of the external wireless amp to the portable terminal for tuning (S120); Confirming and determining whether the wireless reception frequency of the external wireless amp input in step S120 and the transmission frequency of the microphone wireless unit 130 of the portable terminal are tuned (SUN); Blocking the radio frequency input of the radio amplifier when it is determined and tuned in the process (S130) (S140); If it is determined in step S130 that the radio reception frequency of the radio amplifier and the radio transmission frequency of the microphone wireless unit 130 of the mobile terminal 100 are not tuned, the radio amplifier reception frequency is directly inputted as a reference. By setting, the correction process consisting of a step (S170) for correcting the transmission frequency of the microphone wireless unit 130,

When a voice level signal is input from the mobile terminal audio unit 110 of the correction process, the voice level signal transmission path is set and operated to operate as a wireless microphone, and wirelessly through the audio unit 110 of the mobile terminal 100. Confirming and determining whether a voice level signal for the microphone is input (S150); If it is determined in the step (S150) and a voice level signal for operating in the wireless microphone mode is input, the microphone is composed of a microphone process consisting of the step of wirelessly transmitting from the microphone wireless unit 130, operating the mobile terminal as a wireless microphone (S160). do.

Hereinafter, according to the present invention having the above configuration, a wireless microphone method of the mobile terminal 100 will be described in detail with reference to FIG. 5.

Whether to use in the communication mode or the wireless microphone mode using the mobile terminal 100 for mobile communication is confirmed and confirmed by the analysis of the control command of the control unit (S100), the wireless microphone in the confirmation determination (S100) When it is analyzed by the control command to select to operate in the mode, it is determined whether the external wireless amplifier and the microphone wireless unit 130 of the portable terminal is tuned (TUNING) to match the transmission frequency and the reception frequency (S110).

That is, the radio frequency signal output from the radio unit 136 provided in the microphone wireless unit 130 of the portable terminal 100 and radio transmission are identical to the radio frequency radio reception by the external radio amplifier. Check and determine whether the tuning (TUNING) (S110).

If the wireless reception frequency of the external wireless amp and the wireless transmission frequency of the wireless unit 136 of the microphone wireless unit 130 are coincided with each other in step S110, the process proceeds to the microphone process S150. If not, input the reception frequency of the radio amplifier for tuning (S120), and as shown in the step (S120) and confirms whether the received frequency and the transmission frequency of the radio unit 136 is matched and judged If it is not tuned in the determination (S130) (S130), it is corrected to change the radio transmission frequency of the radio unit 136 (S170), and the feedback to the tuning determination process (S130) (FEEDBACK).

The transmission frequency generated and output by the frequency comparator 138 of the microphone wireless unit 130 by the control unit 120 in the tuning determination process (S130) is synchronized with the radio reception frequency of the radio amplifier ( If it is determined that the (TUNING), the reception frequency input from the external radio amp is cut off (S140).

As described above, the control unit 120 of the mobile terminal 100 confirms a tuning state in which the radio transmission frequency of the microphone wireless unit 130 and the radio reception frequency of the radio amplifier are identical to each other. Is determined (S150), and when the audio level signal is input in the determination (S150), the path of the audio unit 110 and the microphone wireless unit 130 is connected, so that the microphone wireless unit 130 Outputs the voice level signal at a corresponding wireless transmission frequency and wirelessly transmits the signal.

The radio frequency signal transmitted by the radio unit 136 for the wireless microphone mode operation, for example, 20 KHz to 50 KHz range slightly depending on the bandwidth occupied according to the type of radio amplifier separately provided in the outside There is.

The present invention, the mobile terminal 100 is selected as a wireless microphone mode (S100), and tunes the radio transmission frequency of the microphone wireless unit 130 to match the radio reception frequency of the radio amplifier (S110 to S140), After tuning as described above, the voice level signal input from the audio unit 110 is wirelessly transmitted as a radio frequency signal tuned through the microphone wireless unit to operate wireless micro (S150, S160), and the plurality of mobile terminals 100 are the same. Simultaneous operation can be made by setting the wireless microphone of the transmission frequency.

The present invention having the above configuration has an industrial use effect of substituting the portable terminal for the wireless microphone when necessary by an operation of selecting the operation mode of the portable terminal as the wireless microphone mode.

In addition, by using a local oscillator for changing the oscillation frequency by voltage control, the local oscillator is controlled accurately by detecting a difference between a radio receiving frequency directly applied from a separate external radio amplifier and a radio transmission frequency of the radio unit. It is convenient to use to transmit high quality voice quality signal at the specified transmission frequency.

In addition, since a plurality of mobile terminals are simultaneously operated by a wireless microphone, there is a convenient effect in that a plurality of wireless microphones do not need to be prepared in a conference room or the like.

Claims (10)

An audio unit converting an applied voice level signal into an electrical signal and inputting the converted electric signal into a voice level signal; A control unit connected to the audio unit and selectively controlling the audio signal output path setting of the audio unit according to the selection; A microphone wireless unit which is connected to the control unit and converts an input voice level signal into a tuned radio amplifier frequency and transmits the radio signal; And a mobile communication wireless unit connected to the control unit and configured to wirelessly transmit and receive a voice level signal at a frequency allocated to mobile communication. The method of claim 1, wherein the control unit, When the portable terminal is selected as a wireless microphone operation, the wireless microphone apparatus of the portable terminal, characterized in that the routing setting is controlled to output a voice level signal input from the audio unit to the microphone wireless unit. The method of claim 1, wherein the microphone wireless unit, The wireless microphone device of a portable terminal, characterized in that the configuration to set the radio transmission frequency in synchronization with the radio reception frequency applied from an external radio amplifier provided separately. The method of claim 3, wherein the microphone wireless unit, A local oscillation unit generating and outputting a local oscillation frequency signal for converting a voice level signal input from the control unit into a radio transmission frequency signal by a corresponding control; A mixer unit for mixing the frequency signal of the local oscillation unit and the voice level signal inputted from the control unit; A wireless unit which inputs a signal of the mixer unit and converts the signal into a reception frequency of the external wireless amp and wirelessly transmits the signal; And a frequency comparator configured to input and compare a transmission frequency of the radio unit and a radio frequency reception frequency of the external unit, and output a control signal corresponding to a difference. The method of claim 4, wherein the local oscillator, The wireless microphone device of a portable terminal, characterized in that for adjusting the frequency generated by the voltage control signal applied from the frequency comparator. In the case of selecting and operating the mobile terminal in the wireless microphone mode, a start-up process of judging whether the transmission frequency of the built-in microphone wireless unit and the reception radio frequency of the external radio amplifier are synchronized; If it is determined that the transmission frequency of the mobile terminal and the reception frequency of the wireless amplifier are not tuned in the starting process, the correction process of directly inputting the reception frequency of the wireless amplifier to synchronize the transmission frequency of the microphone wireless unit; And a microphone process operated to operate as a wireless microphone when a voice level signal is input from the audio terminal of the portable terminal of the correction process. The method of claim 6, wherein the starting process, Determining whether the portable terminal controller is selected to operate in a wireless microphone mode; When it is determined that the wireless microphone mode is selected in the above process, the wireless microphone method of the mobile terminal, comprising: determining whether the wireless transmission frequency of the microphone wireless part of the portable terminal is synchronized with the wireless reception frequency of the wireless amplifier. . The method of claim 6, wherein the correction process, Inputting, by the controller of the starting process, a reception frequency of the radio amplifier for tuning when the microphone radio unit is not synchronized with the external radio amplifier and a radio frequency signal; Determining whether the reception frequency of the wireless amp input in the input process and the transmission frequency of the microphone wireless part of the portable terminal are synchronized with each other; And a step of blocking the input of the tuning frequency of the radio amplifier when the tune is determined and tuned in the determination process. The method of claim 8, If the reception frequency of the wireless amplifier and the microphone wireless transmission frequency of the portable terminal is not tuned in the determination process, further comprising the step of correcting the microphone wireless transmission frequency based on the wireless amplifier receiving frequency Wireless microphone method of using a mobile terminal. The method of claim 6, wherein the microphone process, Confirming and determining whether a voice level signal is input from the audio unit by the controller of the correction process; The wireless microphone method of the portable terminal, characterized in that the process of operating the portable terminal as a wireless microphone because the output is wireless transmission from the microphone wireless unit when a voice level signal for the wireless microphone is determined in the determination process.

Images