WO2001050630A1

WO2001050630A1 - Close range wireless transceiver apparatus

Info

Publication number: WO2001050630A1
Application number: PCT/KR2000/000599
Authority: WO
Inventors: Chul Nam; Jong-Haeng Cho
Original assignee: Forus Co., Ltd.
Priority date: 1999-12-31
Filing date: 2000-06-09
Publication date: 2001-07-12
Also published as: KR20000017970A

Abstract

Disclosed is a close range wireless transceiver apparatus of a compact size and light weight that integrates a wireless transceiver installed at an audio signal generating device, such as mobile communication terminals for remote communications, with an earphone for converting electric signals to audio signals, a microphone for converting audio signals to electric signals, and with a voice data transceiver. The close range wireless transceiver apparatus according to the invention includes wireless transceiver means connected to an audio signal generating device for converting audio signal of the device to radio signals to wirelessly transmitting the radio signals, and wirelessly receiving external audio signals and audio-related signals, and wireless ear microphone means, which integrates a wireless transceiving section separated from the audio signal generating device for wirelessly communicating with the wireless transceiver means to transceive audio signals and audio-related signals, with a transmitting/receiving section for outputting audio signals received by the wireless transceiving section, and converting the signals inputted through a microphone to radio signals.

Description

CLOSE RANGE WIRELESS TRANSCEIVER APPARATUS

Technical Field

The present invention relates to a close range wireless transceiver apparatus, and in particular, to a close range wireless transceiver apparatus of a compact size and light weight that integrates a wireless transceiver installed at an audio signal generating device, such as mobile communication terminals for remote communications, with an earphone for converting electric signals to audio signals, a microphone for converting audio signals to electric signals, and with a voice data transceiver.

Background Art

Remote communication apparatuses for mobile communication terminals, which are so called ''hands-free^'' or '"earphones", are generally connected to terminals through wire. Wireless earphones manufactured in Japan for remote listening to music from a portable cassette player and terminals of a wired earphone type are known to be of those kinds.

However, the remote communication apparatus for a mobile communication terminal also adopts a method of connecting the existing wire earphone and a microphone to a separate wireless transceiver apparatus or a controller for controlling a sound volume through wire.

Accordingly, a user of the existing wireless earphone needs a set consisting of a terminal and an earphone as well as a transceiver apparatus. In particular, since the wireless transceiver apparatus should be connected to an earphone through wire, the advantage of the wireless transceiver cannot be fully enjoyed. As a consequence, the transceiver apparatus should bear the burden of portability of the terminal, which also should be carried, thereby posing inconvenience in use and portability.

Disclosure of Invention

It is, therefore, an object of the present invention to provide a close range wireless transceiver apparatus that can be attached to an earphone per se owing to its compact size and light weight to eliminate the need of separate carriage from the existing wireless earphone by realizing a substantial wireless transceiving function without any connecting wires, thereby maximizing the user convenience and portable convenience.

To achieve the above object, there is provided a close range wireless transceiver apparatus, comprising: wireless transceiver means connected to an audio signal generating device for converting audio signals from the device to radio signals and wirelessly transmitting the converted signals, and wirelessly receiving external audio signals; a wireless transceiving section separated from the audio signal generating device for transceiving audio signals by performing wireless communications with the wireless transceiver means; and a wireless ear microphone for outputting audio signals received through the wireless transceiving section into a sound, and integrating a telephone transmitting section with a telephone receiving section for converting signals inputted through a microphone to radio signals.

The wireless transceiver means is connected to a power supply section of the audio signal generating device and using a power supply of the audio signal generating device. The wireless transceiver means comprises a charging section for charging the power by using the power supply section of the audio signal generating device. The wireless transceiver means also includes an interface jack connected to an audio output terminal of the audio signal generating device for transmitting and receiving audio signals from the audio signal generating device. The wireless transceiver means is housed inside of the audio signal generating device.

The audio signal generating device is a mobile communication terminal, and the wireless transceiver means is integrally attached to a portable strap of a mobile communication terminal. The wireless transceiver means includes a data power supply connector for interface to a data/power supply connector of the mobile communication terminal. The wireless transceiver means also includes a microprocessor for setting individual IDs for each wireless ear microphone to prevent radio interference in the course of wireless communications with the wireless ear microphone. The wireless transceiver means further includes a microprocessor for breaking the electric power when the wireless transceiver means is not in operation by monitoring operation thereof.

The wireless ear microphone includes radio broadcasting receiving means. The wireless ear microphone includes a microprocessor for breaking internal power supply when the wireless ear microphone is not in use, controlling a received sound volume by pushing up/down switches, and controlling a transmitted sound volume by means of signals inputted from an external microphone. The wireless microphone further includes a headphone jack insertion section for listening to music by receiving a headphone jack. The wireless ear microphone also includes an operational switch for assisting in four or more interfaces. The operational switch comprises a dial pad or voice dialing means for dialing telephone numbers. The wireless ear microphone means enables an ear guide worn around user's ears to rotate at 360°, and includes an ear guide rotating plate for fixing the ear guide at a desired position. The wireless ear microphone further includes an LED display section for blinking LED to inform an input of radio signals from the wireless transceiver means.

Brief Description of Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, in which:

Fig. 1 is a schematic diagram illustrating a close range wireless transceiver apparatus according to a best mode for carrying out the present invention;

Fig. 2 is a schematic diagram illustrating a wireless

apparatus for a mobile telephone terminal according to another best mode for carrying out the invention;

Fig. 3 is a block diagram illustrating a construction of a wireless transceiver apparatus for a mobile telephone terminal according to the present invention;

Fig. 4 is an internal circuit diagram of a low voltage sensor according to the present invention; Fig. 5 is an internal circuit diagram of a charging circuit according to the present invention;

Fig. 6 is an internal circuit diagram of a wireless ear microphone according to the present invention;

Fig. 7 is an internal circuit diagram of a light element inside of the wireless ear microphone according to the present invention;

Fig. 8 is a circuit diagram of an FM receiving section housed inside of the wireless ear microphone according to the present invention;

Fig. 9 is a circuit diagram of a sound volume control circuit housed inside of the wireless ear microphone according to the present invention;

Fig. 10 is a flow chart illustrating an operational process of a microprocessor in a wireless transceiver apparatus according to the present invention;

Fig. 11 is a flow chart illustrating an operational process of a microprocessor in the wireless ear microphone according to the present invention; Fig. 12 is a schematic diagram exemplifying an installation of the wireless transceiver according to the present invention; and

Fig. 13 is an external view of the wireless ear microphone according to the present invention.

Best Modes for Carrying out the Invention

Best modes for carrying out the present invention will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Fig. 1 is a schematic diagram illustrating a close range wireless transceiver apparatus according to a best mode for carrying out the present invention. Referring to Fig. 1, the close range wireless transceiver apparatus according to a best mode for carrying out the present invention comprises a acoustic device 100' such as an AV device or an MP3, a wireless transceiver 200 connected to the acoustic device 100', and a wireless ear microphone 300, which is a wireless telephone transmitting/receiving apparatus, for performing close range wireless communications with the wireless transceiver 200.

Fig. 2 is a schematic diagram illustrating a wireless transceiver apparatus for a mobile telephone terminal according to another best mode for carrying out the invention. Referring to Fig. 2, the close range wireless transceiver apparatus comprises a portable terminal 100, a wireless transceiver 200 connected to an earphone outlet 110 of the portable terminal 100 and a data/power supply connector

120, and a wireless ear microphone 300, which is a wireless telephone transmitter/receiving apparatus, for performing close range wireless communications with the wireless transceiver 200.

The portable terminal 100 is a commonly used portable terminal of a

PCS/CDNA type. The wireless transceiver 200 is connected to the earphone outlet

110 of the portable terminal 100. The wireless transceiver 200 receives audio signals from the portable terminal 100, and transfers the audio signals to the wireless ear microphone 300. The wireless ear microphone 300 modulates the user's audio signals, and transfers the modulated signals to the wireless transceiver 200 and to the portable terminal 100.

The data/power supply connector 120 of the portable terminal supplies data and power to the wireless transceiver 200. The wireless transceiver 200 and the wireless ear microphone 300 are designed to consume the electric power of themselves.

Fig. 3 is a block diagram illustrating a detailed construction of the wireless transceiver apparatus 200. Referring to Fig. 3, the wireless transceiver apparatus 200 comprises a microprocessor 210 for computing and controlling an overall operation of the wireless transceiver, an antenna for receiving signals transmitted from the wireless ear microphone 300, a receiving section 230 for receiving signals from the antenna 220 and processing the received signals, a transmitting section 240 for transferring audio signals of the terminal to the wireless ear microphone 300 as radio signals, a low voltage sensor 250 for sensing low voltage by checking internal power supply of the wireless transceiver 200, a charging circuit 260 for charging internal power supply of the wireless transceiver 200, an LED display section 270 consisting of an LED 271 for displaying an operational state of the wireless transceiver 200 and an LED 272 for displaying a charged state of the power supply, a data/power supply jack 280 for connecting an external power supply thereto and charging the power, and an earphone jack 290 for receiving audio signals from the portable terminal 100.

The wireless transceiver 200 constructed as above receives audio signals from the portable terminal 100 through the earphone jack. The transmitting section 240 then transmits the audio signals to the wireless ear microphone 300 through the antenna 220. On the other hand, the radio signals transmitted from the wireless ear microphone 300 are received by the antenna 220, processed by the receiving section 230, and transferred to the portable terminal 100 through the earphone jack 290. Here, the receiving section 230 and the transmitting section 240 receive electric power under the control of the microprocessor 210. Therefore, when the wireless transceiver 200 is not in operation to wait a call, the receiving section 230 and the transmitting section 240 interrupt electric power supply from the microprocessor 210 so that the wireless transceiver 200 can be operated with a minimum electric power.

When the wireless transceiver 200 is in operation, the LED 271 blinks at predetermined intervals to display the operating state thereof. The wireless transceiver 200 receives power supply through the data power supply connector 280 so as to charge the charging circuit 260. The wireless transceiver 200 displays the charged state of the battery through the low voltage sensor 250 housed inside therein to inform the user of the charged state.

Fig. 4 is an internal circuit diagram of the low voltage sensor 250 housed inside of the wireless transceiver 200. Referring to Fig. 4, the voltage applied through a port P251 is distributed to resistors Rl and R2. If the voltage becomes lower than a predetermined voltage, a Ql is switched on. Then, a "low" signal is transferred to the microprocessor 210 through a port P252 to inform the user of the charged state. Upon completion of the charging, the Ql is switched off. Then, a "high" signal is transferred to the port P251.

Fig. 5 is an internal circuit diagram of a charging circuit 260 housed inside of the wireless transceiver 200. Referring to Fig. 5, the external power supply is applied through the port P261 , and a charge battery BAT housed inside of the wireless transceiver 200 is charged through a diode Dl . Upon completion of the charging, the Dl is switched off so as to discontinue the charging. Current can be supplied to a load with the charged voltage through a resistor R4 and a port P262. The charging circuit 260 is designed such that the LED 271 becomes red during the charging and becomes green after the charging.

Fig. 6 is an internal circuit diagram of the wireless ear microphone 300.

Referring to Fig. 6, the wireless ear microphone 300 comprises a microprocessor 310 for computing and controlling an overall operation thereof, an antenna A for receiving radio signals, an FM receiving section 320 for receiving FM broadcasting, an audio signal receiving section 330 for receiving audio signals from the wireless transceiver 200, a sound volume controller 340 for controlling a sound volume of the audio signal receiving section 330, up/down switches SI, S2 for controlling the sound volume, a microphone M for receiving a user's audio signal and converts the same to an electric signal, an automatic sound volume controller 350 for determining the sound volume of the user's audio signal inputted through the microphone M to automatically control the sound volume, an audio signal transmitter 360 for receiving audio signals from the microphone M, and transferring modulated audio signals to the wireless transceiver 200 through the antenna A, a low voltage sensor 370 for sensing a low voltage by detecting an internal power supply of the ear microphone 300, a charging circuit 380 for charging the power to be used, a charging jack J for charging the wireless ear microphone 300, and a light element 390 for informing an operational state of the wireless ear microphone 300.

The wireless ear microphone 300 constructed as above enables the FM receiving section 320 to receive an FM radio broadcasting through the antenna A. The power supply to the wireless ear microphone 300 is also controlled by the microprocessor 310. The audio signal receiving section 330 receives audio signals transmitted from the wireless transceiver 200 through the antenna A. The sound volume of the audio signal receiving section 330 is controllable by the sound volume controller 340. The sound volume of the audio signal receiving section 330 can be controlled by the up/down switches SI, S2 interfaced with the microprocessor 310 and can be automatically controlled by the automatic sound volume controller 350 through determination of an external sound volume from the microphone M. The sound can be listened to by a speaker S.P or by a headphone inserted to a headphone jack inserting section 341.

The audio signal transmitter 360 receives audio signals from the microphone

M, and transfers modulated audio signals to the wireless transceiver 200 through the antenna A. The power supply thereto is also controlled by the microprocessor 310. The low voltage sensor 370 senses a low voltage, and notifies the wireless ear microphone 300 of the low voltage state. The charging jack J interfaces with an external power supply so that the charging circuit 380 can be charged.

Fig. 7 is an internal circuit diagram of the light element 390 inside of the wireless ear microphone 300. Referring to Fig. 7, when the wireless ear microphone is in an operational state, a "high" signal flows through ports P8 to PI 1 interfaced with the microprocessor 310, and a current is supplied to an emitting diode through resistors R30 to R33 so as to emit a light.

Fig. 8 is a circuit diagram of the FM receiving section 320 housed inside of the wireless ear microphone 300. Referring to Fig. 8, FM signals received through the antenna A are modulated by the FM receiving section 320. The FM receiving station selection signal from the FM receiving station selection switch S3 is provided by a program through the microprocessor 310 as a signal that can alarm a version, etc.

When a particular station has been selected, a corresponding electric signal value is converted by the microprocessor 310 to a DC value so as to be stored in a memory of itself. The user then can select a station by means of the memory switch

S3 without scanning.

The following is a detailed description of the digital value corresponding to the selected station value stored in the memory. A PWM signal is generated through a port P3 in the microprocessor 310. The PWM signal is converted to a DC value, and the value initially selected by the microprocessor 310 is applied to the FM receiving section 320 so as to easily trace the memorized selection value.

Fig. 9 is a circuit diagram of a sound volume control circuit and a sound volume controller 340 housed inside of the wireless ear microphone. Referring to Fig. 9, the power supply from the FM receiving section 320 or the sound receiving section 330 is received by the microprocessor 310 through diodes Dl l, D12. The PWM signal corresponding to the up/down signal outputted from a port P5 of the microprocessor 310 is converted to a DC value through a resistor R70 and a condenser C71 so as to be applied to the sound volume controller 340 as a control signal for controlling the sound volume.

Fig. 10 is a flow chart illustrating an operational process of the microprocessor in the wireless transceiver apparatus 200. Referring to Fig. 10, the waiting mode S 1 represents a state that the portable terminal is not in communication. From the perspective of hardware, a sleep mode is maintained by the microprocessor 210.

If a telephone bell rings (S2). the microprocessor 210 supplies electric power to the receiving section 230 and the transmitting section 240, and blinks the LED 271 at intervals of 0.5 seconds. The transmitting section 240 transmits a "call" signal to the wireless ear microphone 300 to inform the user of an incoming telephone call. The microprocessor 210 maintains the S3 state until an "ack" signal is received by the wireless ear microphone 300 to acknowledge reception of the "call" signal. If an

"ack" signal is received from the wireless ear microphone 300 (S4), the transmitting section 240 and the receiving section 230 continue communications with the wireless ear microphone 300. If the telephone call is finished (S5), a signal informing the finished state of the call is transmitted to the wireless ear microphone 300. Then, the microprocessor 210 interferes the electric power supply to the transmitting section 240 and the receiving section 230 (S6) so as to return to the waiting mode (S I).

Fig. 11 is a flow chart illustrating an operational process of the microprocessor 310 in the wireless ear microphone according 300. Referring to Fig. 11 , a "call" signal informing an incoming telephone call is received (S I 2) from the wireless transceiver 200 under a waiting state (Sl l). If any signals are inputted from any of the switches to receive the telephone call (S I 6), the microprocessor 310 supplies electric power to the FM receiving section 320, the audio signal receiving section 330, and the audio signal transmitting section 360 while transmitting an "ack" signal to the wireless transceiver 200 (SI 7). Once the telephone call is finished (SI 8), either the waiting state Sl l or the FM receiving state S15 is restored (SI 9) depending on the previous state.

If a scanning switch or a pre-set switch is pushed (SI 3) under the waiting state Sl l, the electric power is supplied to the FM receiving section 320 only, a frequency is scanned according to the pushing of the scanning switch to select a station. If the pre-set switch is pushed, the selected station frequency stored in the microprocessor 310 is read to select an FM station (S14). The user then can catch the FM radio signals (SI 5). Meanwhile, if a "call" signal is received in the course of catching the FM radio signals, the microprocessor 310 stores the frequency that is currently caught in the memory, and turns back to the S16 state to confirm pushing of the switch and return to the FM receiving state (S I 5). If it is determined that no key input for switching off the power supply exists, the FM receiving state SI 5 is maintained. Figs. 12 is a schematic diagram exemplifying an installation of the wireless transceiver at the portable terminal, and Fig. 13 is an external view of the wireless ear microphone. The wireless transceiver 200 for the portable terminal shown in the preceding drawings is identified by the drawing reference numeral 10 in Fig. 12. The following is a description of an external view of the wireless transceiver apparatus.

Fig. 12 is a schematic diagram exemplifying an installation of the wireless transceiver at a portable terminal. Referring to Fig. 12, the wireless transceiver 10 is attached to a strap 14 of the terminal after the interface jack 12 is inserted to the earphone connecting terminal. As an alternative, the wireless transceiver 10 may be attached to the strap 14 of the terminal after being connected to the data/power supply connector 120 located on a bottom surface of the terminal. Alternatively, the wireless transceiver 10 may be housed inside of the terminal.

The wireless transceiver 10 for the terminal may also be attached to the strap 14 of the terminal after being connected to an earphone connecting outlet or an external input device. Otherwise, if the strap is integrated with the wireless transceiver for a terminal, displacement of the wireless transceiver can be prevented even during an active movement.

The wireless transceiver for a terminal sets 100,000 individual IDs to prevent radio interference in the course of wireless communications with the wireless ear microphone. The communicable distance covers 5m each for transmission and reception.

Fig. 13 is an external view of the wireless ear microphone according to a best mode for carrying out the present invention. A main body 1 of an integrated type wireless earphone is designed to effectively load inner parts, the functions of which have been highly intensified, and to safely protect the inner parts as well as to reduce the weight thereof by using a light and solid material. An ear guide 2 fixes the main body 1 of an integrated type onto the user's ear.

A rotating plate 3 of the ear guide 2 is rotatable by 360°, and is fixable at a desired position. Thus, the rotating plate 3 prevents displacement of the wireless earphone even during an active movement of the user. The wireless earphone can be put into any one of the user's ears according to the user's habit and favor. The ear guide 2 is connected to the rotating plate 3 of the ear guide 2 by means of an ear guide connecting section 4.

The operational switch 5 of the wireless earphone has four accessing sections in one button for the purpose of aesthetics and preventing erroneous operation that may be caused by reducing the size of the apparatus as well as to realize user's convenience and safety by allowing the user to select a desired function without viewing the part to be operated.

Further, a dial pad or a voice dialing means is formed on the operational switch for dialing telephone numbers.

The speaker 6 transfers the speaking sound to the user. An ear speaker of a large size as almost big as the apparatus itself is fixed onto the user's ear so as to facilitate the user's catching of the sound.

The microphone guide and antenna 7 not only connects the microphone 8, which converts the inputted user's voice to electric signals, to the main body 1 of the wireless earphone but also functions as an antenna. The antenna is positioned at a lower side of the apparatus to be adjacent to the face of the user rather than the head thereof, thereby protecting the user's health from the harmful electric wave of high frequency. Also, the microphone positioned at the tip of the microphone guide and antenna 7 is flexibly movable according to the user's physical shape and usage. The following is a description of the process of transmitting and receiving audio signals performed in close range wireless communications between the wireless transceiver for a terminal and a wireless ear microphone. The drawing reference numeral 13 represents the light element of the LED display section that is equivalent to the drawing reference numeral 390 in Fig. 6. The drawing reference numeral 14 represents a strap attached to the terminal, while the drawing reference numeral 15 represents a headphone jack inserting section for enabling the user to listen to music with a headphone. The headphone jack inserting section is equivalent to the drawing reference numeral 341 in Fig. 6.

A signal from the terminal is transferred to the wireless transceiver 10 for a terminal by means of a data/power supply connection line 11 and a terminal interface jack section 12, which are connected to the data/power supply connector 120 of the terminal. The signal is transmitted to the main body 1 of the wireless earphone through the microphone guide and antenna 7 by means of the wireless transceiver 10 for a terminal. The signal received by the main body 1 of the wireless earphone is transferred to the user as a audio signal through the speaker 6 of the wireless earphone.

The following is a description of the process of transferring the user's voice to the terminal. If the user speaks, the audio signals are inputted to the microphone 8 and converted to electric signals. The electric signals are wirelessly transferred to the wireless transceiver 10 for a terminal through a wire housed inside of the micropone and antenna 7 and through a transceiving section housed inside of the main body 1 of the wireless ear microphone. The radio signals are processed by the wireless transceiver 10 for a terminal, and transferred to the user's terminal through the terminal interface jack 12. The best modes for carrying out the invention have been described with reference to mobile communication telephone terminals, however, it is obvious to those skilled in the art that the same principle may be applied to the ordinary wire and wireless telephone or wireless transception of audio signals. Also, the reference "wireless ear microphone" used in the best modes does not limit the spirit of the present invention but is merely an example of expressing the spirit of the present invention.

Also, the best modes for carrying out the invention have both an earphone connection line and a data/power supply connection line between the wireless transceiver and the terminal. However, the spirit and scope of the invention are not limited to comprising two connection lines, and it is obvious to those skilled in the art that a constructional change can be made to comprise any one of the earphone connection line or the data/power supply connection line.

Therefore, it will be understood by those skilled in the art that various changes in form and details may be made in the invention without departing from the spirit and scope of the invention as defined by the appended claims.

The close range wireless transceiver apparatus according to the present invention provides advantageous effects that a size of the apparatus was reduced due to integration of a speaker with a microphone inside of the wireless ear microphone, and that a substantial radio communication was realized by eliminating all the external connection lines between the apparatuses. The close range wireless transceiver apparatus according to the present invention also eliminated the external pressure sensed in the conventional apparatus by employing an earring (i.e., an ear guide) that is tightly fixed onto the user^'s ear for the wireless ear microphone. The earring (the ear guide) suspended on the user's ear is rotatable by 360° owing to the rotating plate and tightly fixed onto the user's ear, thereby posing no inconvenience to the user. The earring is also of forceps type that is not displaced even by an active movement of the user.

The microphone guide and antenna, which is made of a flexible material, is adjustable according to an outline of the user's face. Integration of an antenna with a microphone guide also eliminated the phenomenon of disabling one of the brain functions of the user that is known to rise due to an electronic wave when an antenna is positioned around a head under the conventional art. Radio interference can also be prevented by setting original IDs for each wireless ear microphone within the microprocessor of the wireless transceiver, thereby enhancing the quality of communication services for the user.

Claims

What Is Claimed Is:

1. A close range wireless transceiver apparatus comprising wireless transceiver means connected to an audio signal generating device for converting audio signals of the device to radio signals to wirelessly transmitting the radio signals, and wirelessly receiving external audio signals and audio-related signals; and wireless ear microphone means, which integrates a wireless transceiving section separated from the audio signal generating device for wirelessly communicating with the wireless transceiver means to transceive audio signals and audio-related signals, with a transmitting/receiving section for outputting audio signals received by the wireless transceiving section, and converting the signals inputted through a microphone to radio signals.

2. The close range wireless transceiver apparatus of claim 1 , wherein the wireless transceiver means is connected to a power supply section of the audio signal generating device for using a power supply from the audio signal generating device.

3. The close range wireless transceiver apparatus of claim 2, wherein the wireless transceiver means comprises a charging section chargable by using the power supply section of the audio signal generating device.

4. The close range wireless transceiver apparatus of claim 1 , wherein the wireless transceiver means includes an interface jack interfaced with an audio output terminal of the audio signal generating device for transceiving audio signals of the audio signal generating device.

5. The close range wireless transceiver apparatus of claim 1, wherein the wireless transceiver means is housed inside of the audio signal generating device.

6. The close range wireless transceiver apparatus of claim 6, wherein the audio signal generating device is a mobile communication terminal, and the wireless transceiver means is integrally attached to a carrying strap of the mobile communication terminal.

7. The close range wireless transceiver apparatus of claim 1 or 2, wherein the audio signal generating device is a mobile communication terminal, and the wireless transceiver means comprises a data/power supply connector connected to a data/power supply connector of the mobile communication terminal.

8. The close range wireless transceiver apparatus of claim 1, wherein the wireless transceiver means comprises a microprocessor for setting individual IDs for each ear microphone means to prevent radio interference in the course of wireless communications with the wireless ear microphone means.

9. The close range wireless transceiver apparatus of claim 1, wherein the wireless transceiver means comprises a microprocessor for monitoring an operational state of the wireless transceiver means to break electric power when the wireless transceiver means is not in operation.

10. The close range wireless transceiver apparatus of claim 1, wherein the wireless ear microphone means comprises radio broadcasting receiving means.

11. The close range wireless transceiver apparatus of claim 1 or 10, wherein the wireless ear microphone means comprises a microprocessor for breaking internal power supply when the ear microphone is not in operation, controlling a receiving sound volume by pushing up/down switches, and controlling a transmitting sound volume by means of signals inputted from an external microphone.

12. The close range wireless transceiver apparatus of claim 1 or 10, wherein the wireless ear microphone means includes a headphone jack inserting section for listening to music by inserting a headphone jack thereto.

13. The close range wireless transceiver apparatus of claim 1 , wherein the wireless ear microphone means comprises an operational switch for assisting in four or more interfaces.

14. The close range wireless transceiver apparatus of claim 13, wherein the operational switch comprises a dial pad or voice dialing means for dialing telephone numbers.

15. The close range wireless transceiver apparatus of claim 1, wherein the wireless ear microphone means comprises an ear guide rotating plate for rotating an ear guide worn around a user's ear by 360°, and is fixable onto a desired position.

16. The close range wireless transceiver apparatus of claim 1, wherein the wireless ear microphone means comprises an LED display section for blinking an LED to inform an input of radio signals from the wireless transceiver means.