KR100350930B1 - A phonetic transmission and reception system having a non-electronic wireless earphone - Google Patents

Abstract

The present invention provides a voice transmission and reception device so as to make a call without using a mobile phone directly for safe driving when talking to the other party in a vehicle, and separates earphones that receive voice from the main body in a wireless manner, and separate power supply. A voice transceiving system having a non-powered wireless earphone which does not require a device.

In constructing a voice transmission / reception system having a non-powered wireless earphone, the main body comprising a voice signal transmission unit, a voice signal input unit, and a power unit and a wireless earphone are included, wherein the modulation unit of the voice signal input unit is a voice signal transmitted from a mobile communication terminal. After converting the wave and the modulated signal wave into an PWM wave through an adder and outputting it, after amplifying the amplifier wave to a predetermined size, the PWM wave is transmitted to the earphone through the antenna unit, and the earphone receives the PWM wave through the antenna unit to impedance The matching circuit unit makes different resistance values compatible, and the zero bias detector extracts only the audio signal from the PWM wave and outputs it, and the zero bias detector detects a predetermined current flows according to the pulse width of the PWM wave to supply power. After selecting the audible frequency through the filter unit, To implement the voice transmitting and receiving system having the non-powered wireless earpiece to output voice information.

The earphone that receives the other party's voice can be separated from the main body by wireless method, and the earphone that receives the other party's voice can be miniaturized and lightened by eliminating the need for a separate power supply device. There are no advantages, and the appearance is beautiful, and there are advantages such as providing ease and convenience in use and storage.

Description

A phonetic transmission and reception system having a non-electronic wireless earphone}

The present invention relates to a voice transmission / reception system having a wireless powerless earphone, and more particularly, to install a voice transmission / reception device so that a user can make a call without using a mobile phone directly for safe driving when talking with a counterpart in a vehicle. The present invention relates to a voice transmission / reception system having a wireless power supply that separates an earphone from a main body in a wireless manner and does not require a separate power supply.

In general, mobile communication is a wireless communication that can transmit and receive with a remote party using radio waves, and in response to the necessity of a communication means capable of overcoming the limitations of time and space by expanding a human's living area. Evolving into a new communication area where communication is combined.

These mobile communications include vehicle telephones, personal handy telephones, cordless telephones (CTs), trunked radio systems (TRS), paging, air communications, ship communications, and satellite communications. The demand is increasing rapidly due to various services such as satellite communication, development of related technologies, small size, light weight of terminal, and price reduction.

Due to these factors, the demand of mobile communication terminals has recently increased rapidly, and the number of users is approaching 20 million, and it is commercialized by many people due to the characteristics that it is not limited by time or space. Calls are made to the driver's personal cell phone, or the call is often made to the other party, which impedes a lot of traffic safety.

Due to the problem of traffic accidents caused by the use of mobile communication terminals when driving a vehicle, many countries are leading to prohibit or refrain from using mobile communication terminals when driving a vehicle, but many drivers still use personal mobile phones when driving. You are exposed to the risk of traffic accidents.

As described above, in order to eliminate the risk of a traffic accident caused by the use of a mobile communication terminal when driving a vehicle, a device called 'hands free' is conventionally used to make a phone call with the other party during the next driving.

'Hands-free' is a device that allows a user to talk through a speakerphone or earphone by connecting the main body to a mobile phone and a connection jack so that the user can talk to the remote party without using a personal mobile phone directly in the vehicle.

In the case of the hands-free with a conventional speaker, the other party's voice is ringing, the external noise is not affected, and a clean call cannot be made, the user's personal privacy may be violated, and the production cost is also expensive. there was.

When the phone call, the earphone is usually separated from the main body for clear sound quality. When the earphone is connected by wire, the appearance of the earphone is not beautiful due to the earphone line, and the vision may be disturbed during operation. In the case of wireless, the volume is increased due to the built-in transmission, reception, and power supply circuit in the earphone, and the price increases, and there is an inconvenience when using or storing the battery, and the battery is regularly charged or charged to supply power to the earphone. It was inconvenient to exchange the back.

The present invention has been made in order to solve the above-mentioned inconvenience, the earphone to receive the other party's voice to be separated from the main body by a wireless method, of the wireless signal transmitted from the main body by a zero bias detector built in the wireless earphone It extracts only the voice information of the other party and receives a small amount of power according to the intensity of the magnetic force line transmitted from the main body so that the flow of electrons can be generated in the zero bias state, so that it is powered by itself and economical characteristics due to material saving. It has a beautiful appearance and can make the earphone compact and light in weight, so it is intended to provide convenience and ease of use and storage.

In order to achieve the above object, the present invention comprises a main body consisting of a voice signal transmission unit, a voice signal input unit and a power supply unit, and a wireless earphone, wherein the modulation unit of the voice signal input unit converts the voice signal wave and the modulated signal wave transmitted from the mobile communication terminal. After converting into a PWM wave through an adder and outputting it, and after amplifying the amplifier to a predetermined size, the PWM wave is transmitted to the earphone through the antenna unit, and the earphone receives the PWM wave through the antenna unit to the resistance matching circuit part different resistance The values are made compatible, and the zero bias detector extracts only the audio signal from the PWM wave and outputs it, and the zero bias detector allows a predetermined current to flow according to the pulse width of the PWM wave to supply power, and a filter. After selecting the audible frequency through the output unit, it outputs the voice information through the output unit It is an object of the present invention to provide a voice transmission and reception system having a wireless earphone.

1 is an overall block diagram of an apparatus constructed by one embodiment of the present invention.

Figure 2 is a circuit diagram of an earphone applied to the present invention

* Description of Signs of Main Parts of Drawings *

1. Main Unit 2. Cigar Jack

3. Mobile communication terminal 10. Voice signal transmission unit

11. Externally exposed microphone part 12. Filter part

13. Amplifier 20. Voice signal input unit

21. Modulator 22. Amplifier

23. Antenna section 30. Power section

31. Main body power supply unit 32. Mobile communication terminal charging power unit

40. Wireless Earphones 41. Antenna Section

42. Impedance matching circuit 43. Zero bias detector

44. Filter section 45. Output section

Hereinafter, the configuration according to an embodiment of the present invention with reference to the accompanying drawings in detail as follows.

1 is an overall block diagram of an apparatus constructed by one embodiment of the present invention.

As shown, the present invention is composed of the main body 1 and the wireless earphone 40, the main body 1 and the user's mobile communication terminal (3) by connecting the connection medium, such as earphone jack of the user's voice Received by the external exposure microphone unit 11 and transmitted to the user's mobile communication terminal 3 through the filter unit 12 and amplification unit 13 to be transmitted to the mobile communication terminal (not shown) of the other party, The voice signal transmitted from the mobile communication terminal of the received by the user's mobile communication terminal (3) and transmitted to the main body 1 of the present invention, the wireless earphone 40 via the modulator 21 and the amplifier 22 It is configured to allow a user to receive a call and make a phone call with a remote party.

The main body 1 is installed at a predetermined position inside the vehicle and connected to a mobile communication terminal 3 and a connection medium such as an earphone jack to transmit a user's voice signal to the mobile communication terminal 3, and the mobile communication terminal. (3) A device that plays a role of receiving the voice signal of the other party received by the wireless earphone 40, the power unit for receiving power supply to the battery (not shown) of the vehicle through the cigar jack (2) ( 30) and a voice signal transmission unit 10 for transmitting the user's voice to the mobile communication terminal 3 and a voice signal input unit 20 for transmitting the voice signal of the other party to the wireless earphone 40.

The voice signal transmission unit 10 is composed of an external exposure microphone unit 11, a filter unit 12 and an amplifier 13, the external exposure microphone unit 11 is a device for receiving a user's voice, Although it may be formed in the form protruding from the main body, in order to improve the reception sensitivity it would be most desirable to be connected to the sun shade or the like installed on the ceiling inside the vehicle so as to be close to the user.

The filter unit 12 selects and extracts only a required frequency from the voice signal received by the external exposure microphone unit 11, and the amplifier 13 amplifies the frequency extracted by the filter unit 12 to earphone jack. Through the transmission to the user's mobile communication terminal (3).

The voice signal input unit 20 includes a modulator 21, an amplifier 22, and an antenna unit 23. The modulator 21 is a mobile communication of a user connected to a connection medium such as an earphone jack. A device for receiving a voice signal of the other party received from the terminal (3) and converts it into a signal transmitted through a communication line, wherein the amplifier 22 converts the signal converted by the modulator 21 into the wireless earphone 40 Amplified to be used without a separate amplification effect, and propagates to the wireless earphone 40 through the antenna unit 23. Referring to FIG. As shown, when the voice signal of the other party received from the user's mobile communication terminal is input to the modulator, the modulator to change the pulse width by the amplitude of the voice signal wave, and The modulated signal wave of the Ni wave form is converted into a PWM (Pulse Width Modulation) form through an adder and outputted. The PWM wave is amplified to a predetermined size through an amplification unit made of a transistor or the like and then transmitted through the antenna unit. At this time, the intensity of the magnetic field line is changed according to the PWM wave, and when looking at the power transmission efficiency, the transmission efficiency is about 1/10000 when the distance is about 30 cm. That is, when the transmission power is about 20W, the reception power is about 2㎽, and even when the transmission efficiency is 50%, the reception power of the earphone is about 1㎽, so about 1㎽ is enough for the earphone according to the present invention. It is possible to maintain an audible frequency band through the speaker of.

The power supply unit 30 is to use the power of the battery installed in the vehicle, the power supply to the main body supply power supply unit 31 and the mobile communication terminal for supplying power to the main body 1 through the cigar jack (2) The communication terminal is configured to be a charging power supply 32.

2 is a circuit diagram of an earphone according to the present invention.

As shown, the other party's voice signal transmitted through the antenna 23 of the main body is received through the antenna unit 41 of the wireless earphone 40 and passed through an impedance matching circuit 42 to zero bias detector ( When passing through the zero bias detector 43, the zero bias circuit unit 43 allows a minute current to flow without supply of power, and the signal passes through the filter unit 44 to output the voice of the other party through the output unit 45. It is configured to be delivered to the user.

The antenna unit 41 is a device for receiving a voice signal of the other party transmitted through the antenna unit 23 of the main body, the impedance matching circuit section 42 has a reverse current due to different resistances In order to prevent overload, the resistance values are set to be compatible with each other, and the user's voice signal is again demodulated by the modulator 21 of the main body. It is a circuit device that can receive.

The zero bias detector 43 is a kind of diode, and refers to an electronic circuit that receives energy through received radio wave energy, that is, a received radio signal (RF) or an ultra-pole. The microwave stimulus allows several microcurrents to flow and use it as a circuit driving energy so that the wireless earphone 40 can be operated without a separate power supply device. By looking at the principle that a predetermined power is supplied to the earphone worn by the user's ear and the voice signal of the other party is output, in principle, a '0' voltage bios is impossible, but when a large amount of impurity is added to the PN junction, it is almost '0'. It also reacts to voltages. Schottky barriers that typically generate 0.01 mA of current at a voltage of 0.05 V. To use a diode (Schottky Barrier Diodes) it is preferred.

The filter unit 44 filters out high frequencies that are inaudible, ie noise, among the voice signals of the counterpart demodulated by the LPF (Low Pass Filter), that is, the zero bias circuit unit 43, and selects only the audible and audible frequencies. Through 45, the user's voice of the other party is of good quality.

In addition, the wireless earphone 40 may be provided with a power supply such as a separate battery. In this case, the zero bias circuit 43, which serves to supply power as described above, is not provided. It is replaced with a power supply such as a battery to supply power to the wireless earphone 40 to operate.

As above, it is possible to talk with the other party of remote place without using mobile communication terminal directly while driving the vehicle, and to detach the earphone from the main body by wireless method, so that it can be used with no power. It is a useful invention that provides convenience and convenience.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to the drawings shown.

The earphone that receives the other party's voice can be separated from the main body by wireless method, and the earphone that receives the other party's voice can be miniaturized and lightened by eliminating the need for a separate power supply device. It is beautiful in appearance and has the characteristics of providing convenience and convenience in use and storage, and it is economical feature to reduce the production cost by using minimum parts, and it can protect user's personal privacy. There is such an advantage.

Claims (2)

In constructing a voice transmission and reception system having a wireless earphone, A voice signal transmission unit, a main body consisting of a voice signal input unit and a power supply unit and a wireless earphone, wherein the modulator of the voice signal input unit converts the voice signal wave and the modulation signal wave transmitted from the mobile communication terminal into an PWM wave through the adder to output. After amplifying the amplifier to a predetermined size, the PWM wave is transmitted to the earphone through the antenna unit, and the earphone receives the PWM wave through the antenna unit to make different resistance values compatible in the impedance matching circuit unit, and the zero bias detector Extracts only the audio signal from the PWM wave and outputs it. The detector in the zero bias state allows a predetermined current to flow according to the pulse width of the PWM wave so as to supply power. Sound with wireless power earphone, characterized by outputting voice information through Sex transmission and reception system. delete