KR20020011497A - Wireless EarMic Adapting a Mobile Communication Terminal - Google Patents

Abstract

PURPOSE: A wireless ear-microphone for mounting a mobile communication terminal thereon is provided to connect a base unit with an earphone jack of the mobile communication terminal, and to wirelessly connect the base unit with a handset, so that a user can make a call without using the mobile communication terminal. CONSTITUTION: A base unit(120) connected to a mobile communication terminal(110) compresses audio signals inputted from the mobile communication terminal(110), and modulates the compressed audio signals to high bands to deliver the modulated signals. The base unit(120) demodulates the high-band compressed signals to audio frequency bands, and extends the demodulated signals to transmit the extended signals to the mobile communication terminal(110). A handset(130) demodulates the high-band compressed signals to audio frequency bands, and extends the demodulated signals to deliver the extended signals to outside through a speaker(135). The handset(130) compresses voice signals inputted through a microphone(136), and modulates the compressed signals to high bands to deliver the modulated signals to the base unit(120).

Description

Wireless EarMic Adapting a Mobile Communication Terminal

The present invention relates to a wireless ear microphone for mounting a mobile communication terminal, which will be described in more detail so that a user can make a call even when the user does not directly use the mobile communication terminal by connecting to an earphone jack of a mobile communication terminal such as a cellular phone or a PCS phone. The present invention relates to a wireless ear microphone for mounting a mobile communication terminal providing a communication environment.

With the development of communication technology, mobile phones are becoming an indispensable product in our real life. Although the use of such a mobile phone, i.e., a mobile communication terminal, is beneficial in many respects, there are many problems or significant points in use.

First, harmful electromagnetic waves generated while using a mobile communication terminal have a thermal action or a stimulus action to stimulate a nerve, which increases the body temperature of the human body in whole or in part. Since the mobile communication terminal is used in close contact with the head of the human body and its use time is long, there is a risk of harmful electromagnetic waves. In particular, since the mobile communication terminal is frequently used in a wide range of life by the general public rather than a specific layer, a technology for protecting the human body from harmful electromagnetic waves is urgent. To this end, in order to protect the human body from electromagnetic waves, at home and abroad, MPE (Maximum Permissible Exposure) is specified for the human body, and in order to reduce the amount of harmful electromagnetic waves absorbed by the human body from the mobile terminal according to this regulation, Several technologies are under development.

As such, legislation and technology research and development for regulating the amount of electromagnetic waves are increasing, but it is impossible to completely block electromagnetic waves generated from mobile communication terminals, thus reducing but not eliminating adverse effects on the human body. There is no number. In other words, when a user calls directly using a mobile communication terminal, the human body may not be completely protected from harmful electromagnetic waves generated from the mobile communication terminal.

In addition, talking directly using a mobile communication terminal while driving is the risk of a traffic accident comparable to drunk driving, and recently, traffic accidents due to the use of a mobile phone during driving have increased rapidly. Some countries have already enacted legislation that prohibits the use of mobile phones while driving, and it is certain that they will be implemented soon. Therefore, there is an urgent need for the appearance of peripheral products that provide a call environment without directly using a mobile communication terminal while driving.

In order to solve this problem, conventionally, a wired ear microphone is connected to a mobile communication terminal. However, since the wired ear microphone has a limited distance between the user and the mobile communication terminal, it is inconvenient to always carry the terminal even when the user moves to a short distance. In addition, since the user and the mobile communication terminal is connected by a wire, the appearance is not good, and there is a problem of limiting the activity of the user.

Therefore, an object of the present invention for solving the problems of the prior art, by connecting the base unit to the earphone jack of the mobile communication terminal and the base unit and the handset by wireless communication, the user directly using the mobile communication terminal Even if you do not have to provide a wireless ear microphone for mounting a mobile communication terminal to use a mobile phone.

1 is a block diagram illustrating an internal configuration of a wireless ear microphone for mounting a mobile communication terminal according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

110: mobile communication terminal 120: base unit

121, 133: compression / extension 122, 132: RF module

123, 137: Micro Process Unit 124, 138: EEPROM

125, 131: Antenna 130: Handset

134: amplifier 135: speaker

136: microphone

In order to achieve the above object, a wireless ear microphone for mounting a mobile communication terminal according to the present invention is connected to a mobile communication terminal, compresses an audible signal input from the mobile communication terminal, modulates the audio signal into a high frequency band, and transmits the handset. A base unit for demodulating and decompressing a signal of a compressed high frequency band input from the audio frequency band and transmitting the demodulated signal to the mobile communication terminal;

The demodulated signal of the compressed high frequency band transmitted from the base unit is amplified and decompressed into an audible frequency band and sent out through the speaker, and the voice signal input through the microphone is compressed and modulated into a high frequency band and then sent to the base unit. And the handset.

Preferably the base portion,

A compression / extension unit for compressing an audible signal input from the mobile communication terminal and extending the compressed signal transmitted from the handset;

The RF module modulates an audible signal compressed by the compression / extension unit into a high frequency band, sends the signal to the handset, demodulates a signal of the compressed high frequency band input from the handset into an audible frequency band, and delivers the signal to the compression / extension unit. , And

Receiving a status signal from the compression / extension unit and the RF module, and setting a channel between the base unit and the handset, and including a microprocess unit for outputting a control signal to the compression / extension unit and the RF module. It features.

More preferably the handset is

A microphone for receiving a user's voice signal,

A compression / extension unit which compresses the voice signal received from the microphone and expands the compressed audible signal transmitted from the base unit;

A speaker for transmitting an audible signal extended by the compression / extension unit to the outside;

An RF module which modulates the voice signal compressed by the compression / extension unit into a high frequency band and sends it to the base unit, demodulates the signal of the compressed high frequency band input from the base unit into an audible frequency band, and transmits it to the compression / extension unit; And

Receiving a status signal from the compression / extension unit and the RF module, and setting a channel between the base unit and the handset, and including a microprocess unit for outputting a control signal to the compression / extension unit and the RF module. It features.

Hereinafter, with reference to the accompanying drawings will be described in more detail "wireless ear microphone for mounting a mobile communication terminal" according to an embodiment of the present invention.

1 is a block diagram illustrating a wireless ear microphone for mounting a mobile communication terminal according to an embodiment of the present invention.

The base unit 120 having a connection terminal inserted into the earphone jack of the mobile communication terminal 110 and the base unit 120 to wirelessly communicate with the base unit 120 receives the voice signal received by the mobile communication terminal 110. And a handset 130 for transmitting to the user through the 120 and transmitting the user's voice signal to the base unit 120 to be transmitted to the mobile communication terminal 110.

The base unit 120 includes a compression / extension unit 121 for compressing or extending an audible signal such as a voice signal or a dialing signal transmitted from the mobile communication terminal 110 or the handset 130, and an audible signal. Modulates a high frequency band or demodulates a signal of a high frequency band to an audible frequency, receives a state signal from the compression / extension unit 121 and the RF module 122, and outputs a control signal for necessary control. The Micro Process Unit (123), the EEPROM 124 for storing frequency information corresponding to the selected channel and transmitting the MPU 123, and the signal of the high frequency band modulated by the RF module 122 An antenna 135 is transmitted to the handset 130 or receives a signal of a high frequency band from the handset 130 and transmits the signal to the RF module 122.

In addition, the handset 130 receives the high frequency band signal transmitted through the antenna 125 of the base unit 120 or transmits the high frequency band signal to the base unit 120 and the antenna ( RF module 132 for demodulating a signal of a high frequency band received through the 131 to an audible frequency band or for modulating a signal to be transmitted to the base unit 120 to a high frequency band and transmitting it to the antenna 131, and a voice signal or dialing. A compression / extension 133 for compressing or decompressing an audible signal such as a signal, an amplifier 134 for amplifying an audible signal extended from the compression / extension 133, and an amplified audible signal. Transmitting the status signal from the speaker 135 to be transmitted to the outside, the microphone 136 to receive the user's voice to the compression / extension 133, and the RF module 132 and compression / extension 133 Micro process unit that receives and outputs control signals for necessary control cess unit: 137, and the EEPROM (138) for storing the frequency information corresponding to the selected channel, and delivers to the MPU (137).

The wireless ear microphone for mounting a mobile communication terminal according to the present invention configured as described above operates as follows.

First, when the mobile communication terminal 110 is received, the incoming signal is output to the connection terminal (not shown) of the wireless ear microphone base unit 120 through the earphone jack. The incoming signal is input to the compression / decompression unit 121 and compressed, and at the same time, the compression / decompression unit 121 outputs an RX signal informing the MPU 123 that the signal has been received.

Then, the MPU 123 performs a channel setting process for wireless communication between the base unit 120 and the handset 130. First, the MPU 123 determines a connection channel and retrieves a frequency corresponding to the connection channel from the EEPROM 124, and then phase-fixes a loop so that the RF module 122 modulates and demodulates an audible signal at the corresponding frequency. Lock Loop) outputs a TX signal to the RF module 122 to control and receive an audible signal. In addition, the channel information is transmitted to the handset 130.

Looking at the process of transmitting this connection channel information, since a pilot channel is initially established between the handset 130 and the base unit 120, the RF module of the handset and the base unit can transmit and receive the same frequency. To be set. Generally, channel 0 is used as a pilot channel, and channel 1 is used when channel 0 is in use.

The connection channel information transmitted from the base unit 120 is recognized by the MPU 137 of the handset 130, and the MPU 137 of the handset 130 has a frequency for each connection channel stored in the EEPROM 138. Using the information to recognize the connection frequency, the RF module 132 of the handset 130 to control the phase lock loop (Phase Lock Loop) so that it can demodulate and demodulate the audible signal at the corresponding frequency to receive the audible signal The TX signal is output to the RF module 132. When the channel is set and connected in this way, the base unit and the handset modulate and demodulate the audible signal at the same radio frequency to enable communication of the audible signal.

On the other hand, if the channel is set through the above process, the incoming signal or dialing signal, and the voice signal of the other party's caller compressed by the compression / extension unit 121 is transmitted to the RF module 122 is modulated at the set high frequency, The modulated signal is transmitted through the antenna 125.

The high frequency signal transmitted through the antenna 125 of the base unit 120 is input to the antenna 131 of the handset 130 and transmitted to the RF module 132. The RF module 132 demodulates a high frequency signal into an audible frequency band and transmits it to the compression / extension unit 133. The compression / extension unit 133 extends the compressed signal to a speaker through the amplification unit 134. Transmission to the 135 to be transmitted to the outside through the speaker 135.

On the other hand, the voice signal for the user's call is transmitted to the compression / extension 133 through the microphone 136 is compressed. The compression / decompression unit 133 outputs an RX signal informing the MPU 137 that the user's voice signal is input, and the MPU 137 transmits a TX control signal so that the RF module can operate when the RX signal is received. Output The voice signal compressed by the compression / decompression unit 133 is modulated to the high frequency band by the RF module 132 and then transmitted to the base unit 120 through the antenna 131.

The antenna 125 of the base unit 120 receives a signal and transmits the signal to the RF module 122. The RF module 122 demodulates the input high frequency band signal into an audible frequency band, and compresses / decompresses the signal. Forward to 121. The compression / extension unit 121 extends the compressed signal and transmits the compressed signal to the mobile communication terminal 110.

While the invention has been described above based on the preferred embodiments thereof, these embodiments are intended to illustrate rather than limit the invention. It will be apparent to those skilled in the art that various changes, modifications, or adjustments to the above embodiments can be made without departing from the spirit of the invention. Therefore, the protection scope of the present invention will be limited only by the appended claims, and should be construed as including all such changes, modifications or adjustments.

As described above, according to the present invention, even if the mobile phone user does not directly use the mobile communication terminal, since the call environment is provided, the mobile phone user can be protected from harmful electromagnetic waves transmitted from the mobile communication terminal. In addition, since the base unit connected to the mobile communication terminal and the handset carried by the mobile phone user are wirelessly connected, the mobile phone user can freely operate within a certain range without being limited by the distance from the mobile communication terminal. .

Claims (3)

The mobile terminal is connected to a mobile communication terminal, and the audio signal inputted from the mobile communication terminal is compressed. The audio signal is modulated into a high frequency band and transmitted. The signal of the compressed high frequency band input from the handset is demodulated and expanded into an audible frequency band. A base unit for transmitting to the terminal; The demodulated signal of the compressed high frequency band transmitted from the base unit is amplified and decompressed into an audible frequency band and sent out through the speaker, and the voice signal input through the microphone is compressed and modulated into a high frequency band and then sent to the base unit. Wireless ear microphone for mounting a mobile communication terminal, characterized in that provided with the handset. The method of claim 1, The base portion, A compression / extension unit for compressing an audible signal input from the mobile communication terminal and extending the compressed signal transmitted from the handset; The RF module modulates an audible signal compressed by the compression / extension unit into a high frequency band, sends the signal to the handset, demodulates a signal of the compressed high frequency band input from the handset into an audible frequency band, and delivers the signal to the compression / extension unit. , And Receiving a status signal from the compression / extension unit and the RF module to set up a channel between the base unit and the handset, and including a microprocess unit for outputting a control signal to the compression / extension unit and the RF module. Wireless ear microphone for mounting a mobile communication terminal characterized in that. The method according to claim 1 or 2, The handset, A microphone for receiving a user's voice signal, A compression / extension unit which compresses the voice signal received from the microphone and expands the compressed audible signal transmitted from the base unit; A speaker for transmitting an audible signal extended by the compression / extension unit to the outside; An RF module which modulates the voice signal compressed by the compression / extension unit into a high frequency band and sends it to the base unit, demodulates the signal of the compressed high frequency band input from the base unit into an audible frequency band, and transmits it to the compression / extension unit; And Receiving a status signal from the compression / extension unit and the RF module, and setting a channel between the base unit and the handset, and including a microprocess unit for outputting a control signal to the compression / extension unit and the RF module. Wireless ear microphone for mounting a mobile communication terminal characterized in that.