KR20020076951A - Portable infrared transmitter and wireless ear phone - Google Patents

Abstract

PURPOSE: A portable infrared transmitter and an earphone are provided to have small volume and low power consumption quantity by using an infrared ray. CONSTITUTION: A body(111) electrically connects with an auxiliary device(113) through a wire. The auxiliary device(113) has an optical transmitter(141) for converting an electric signal transmitted from the body(111) into an infrared signal and radiating the infrared signal to air, and a microphone(151) for converting a voice inputted by a user into an electric signal and transmitting the converted electric signal to the body(111). The body(111) includes a controller(121) for receiving a voice signal from a communication terminal, amplifying and modulating the received voice signal to transmit the modulated voice signal to the optical transmitter(141), and amplifying the signal outputted from the microphone(151) to transmit the amplified signal to the communication terminal, and a charging battery(131) for operating the controller(121).

Description

Portable infrared transmitter and wireless ear phone

The present invention relates to a wireless transceiver, and more particularly, to a portable infrared transmitter and earphone for transmitting and receiving signals using infrared rays.

As a method of transmitting and receiving voice signals, there are a wired communication method and a wireless communication method. Since the wireless communication method does not use a wire, there is no inconvenience due to the wire compared to the wired communication method, and the transmission and reception radius is wide, which is convenient for a user to use, and thus has been widely used by communicators. The signal used in the wireless communication method is a high frequency signal. Since radiocommunications using high frequency signals are regulated by radio wave laws in force in each country, they must be approved by the relevant country for specific frequencies. Therefore, in order to perform wireless communication without the permission of the state, it is necessary to use a common frequency that can be used by anyone.

However, since there are many systems using the common frequency, there is a high risk of interference between wireless communication systems, which makes it difficult to use them directly. Therefore, it is necessary to separately use or encrypt each channel for transmission, and accordingly, the cost and the power consumption of driving the semiconductor devices embedded in the wireless communication system to perform wireless communication are high. Each country's regulations on the common frequency are different, so in order to solve this problem, it is necessary to have a transmission and reception structure suitable for the country. Therefore, the development cost accordingly is additionally required.

In addition, a wireless headphone system using high frequency has a problem that it is difficult to use at a short distance due to crosstalk between wireless headphone systems when users enter the audible area at the same time. In addition, since the wireless headphone system uses high frequency, it is difficult to reduce the volume thereof, and thus there is a limitation in miniaturization, which is a characteristic of portable equipment.

The technical problem to be achieved by the present invention is to provide a portable infrared transmitter and earphone with a small volume and low power consumption by using infrared.

Another technical problem to be achieved by the present invention is to provide a portable infrared transmitter and earphone with low crosstalk and good signal quality.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a perspective view of a portable infrared transmitter according to a first embodiment of the present invention.

2A shows an adapter.

FIG. 2B shows a connection device for connecting the portable infrared transmitter shown in FIG. 1 to a communication terminal.

3 is a block diagram of the controller shown in FIG. 1.

4A is a diagram illustrating a state in which the portable infrared transmitter shown in FIG. 1 is coupled with a mobile phone.

4B is a diagram illustrating a state in which the portable infrared transmitter shown in FIG. 1 is combined with an acoustic reproducing apparatus.

5 is a perspective view of an earphone according to a second embodiment of the present invention.

6 is a block diagram of the controller shown in FIG. 5.

7 is a view showing an earphone according to a third embodiment of the present invention.

8A is a diagram illustrating a state in which a user listens to music while sitting at a desk and watching office work.

8B is a diagram illustrating a state where a user walks and listens to music.

The present invention to achieve the above technical problem,

Auxiliary devices; And a main body electrically connected to the auxiliary device through a wire, wherein the auxiliary device converts an electric signal transmitted from the main body into an infrared signal and emits the air into the air; And a microphone for converting a voice input by a user into an electric signal and transmitting the voice signal to the main body, wherein the main body inputs the voice signal from a communication terminal that transmits and receives a voice signal including voice information and receives the input voice signal. A controller for amplifying and modulating and transmitting the amplified and modulated signals to the transmitter, and amplifying a signal output from the microphone and transmitting the amplified signal to the communication terminal; And a rechargeable battery that operates the controller.

Preferably, the controller comprises an input unit for inputting a signal transmitted from the communication terminal; A first amplifier amplifying an output signal of the input unit; And a modulator for converting the signal output from the first amplifier into a carrier band signal and transmitting the signal to the transmitter.

Preferably, the controller comprises a second amplifier for amplifying the signal output from the microphone; And an output unit configured to convert a signal output from the second amplifier unit into a voltage level suitable for reception by the communication terminal and output the converted voltage level.

Preferably, the portable infrared transmitter may also be embedded in a communication terminal.

Preferably, the communication terminal is one of a mobile phone, a personal computer and a voice reproducing apparatus.

Preferably, the apparatus further comprises a fixing device capable of fixing the auxiliary device to a part of the user's body.

The present invention also to achieve the above technical problem,

A receiver for receiving an infrared signal transmitted from a portable infrared transmitter; A controller for demodulating a signal output from the receiver; A speaker for converting a signal output from the controller into voice; And a battery supplying power to the receiver, the controller, and the speaker.

Preferably, the controller comprises an input unit for inputting a signal received by the receiver; A demodulator for demodulating the signal output from the input unit; And an output unit configured to amplify the output of the demodulator and transfer the output to the speaker.

The present invention also to achieve the above technical problem,

First and second earphones electrically connected to each other, each earphone including a receiver for receiving an infrared signal transmitted from a portable infrared transmitter; A controller for demodulating a signal output from the receiver; A speaker for converting a signal output from the controller into voice; And a battery supplying power to the receiver, the controller, and the speaker.

Preferably, the battery may be mounted on only one of the first and second earphones, wherein the battery supplies power to both the first and second earphones.

Preferably, the music is output in stereo when the speakers output music.

According to the present invention, the call sound quality is improved.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a perspective view of a portable infrared transmitter according to a first embodiment of the present invention. Referring to FIG. 1, the portable infrared transmitter 101 includes a main body 111, an auxiliary device 113, and a fixing device 161. The auxiliary device 113 and the main body 111 exchange signals with each other through the wires 115. The wired line 115 may be attached or detached to the main body 111 through the jack 117.

The auxiliary device 113 converts an electric signal transmitted from the main body 111 into an infrared signal and emits it to the air and emits it to the air, and converts a voice input by the user into an electric signal and transmits it to the main body 111. The microphone 151 is provided. The infrared signal emitted from the transmitter 141 is directed.

The main body 111 includes a controller 121 and a rechargeable battery 131.

The controller 121 inputs the voice signal from a communication terminal (411 in FIG. 4A, 811 in FIG. 8A) or a sound reproducing apparatus (421 in FIG. 4B) that transmits and receives a voice signal including voice information. Amplifies and modulates the signal to be transmitted to the transmitter 141, and amplifies a signal output from the microphone 151 and transmits the signal to the communication terminal. The controller 121 adjusts the light amount of the infrared signal to allow the earphone 501 of FIG. 5 to receive a signal having an appropriate size. That is, the controller 121 reduces the amount of infrared signal when the distance between the auxiliary device 113 and the earphone 501 is close, and when the distance between the auxiliary device 113 and the earphone 501 is far, By increasing the amount of light, the user can receive a signal of an appropriate size.

The rechargeable battery 131 provides electric power for operating the controller 121. As the rechargeable battery 131, a general battery may be used.

The main body is provided with ports 123 and 133 into which the connection jacks 215 and 221 shown in FIGS. 2A and 2B can be inserted.

The fixing device 161 is for fixing the auxiliary device 113 to a part of the user's body, such as a collar or an upper pocket of the upper garment. The fixing device 161 may be made in various shapes such as clips and tongs.

In this way, by fixing the auxiliary device 113 to the user's body part using the fixing device 161, the user can talk to the other party through the microphone 151, the present invention can also be used as a hands-free device of the mobile phone.

Since the auxiliary device 113 and the main body 111 are compact, the user can easily carry the portable infrared transmitter 101.

FIG. 2A illustrates an adapter. The adapter 211 inputs a commercial voltage, such as 110 volts or 220 volts, via a plug 213 and drops it to a voltage suitable for a portable infrared transmitter (101 in FIG. 1), and also a portable infrared transmitter. The battery 131 built in the 101 is dropped to a voltage for charging, and the output voltage is converted into a DC voltage and output. The adapter 211 supplies the DC voltage to the controller 121 and the battery 131 of the portable infrared transmitter 101 through the connection jack 215.

2B shows a connection device 205 for connecting a portable infrared transmitter (101 in FIG. 1) with a communication terminal. Connecting jacks 221 and 223 are electrically connected to each other through a wire in the connecting device 205, one connecting jack 221 is inserted into the main body (111 of Figure 1), the other connecting jack 223 is a communication terminal or It is inserted into the sound reproducing apparatus.

3 is a block diagram of the controller 121 shown in FIG. 1. Referring to FIG. 3, the controller 121 includes circuits 301 and 303.

The circuit 301 includes an input unit 311, an amplifier 321, a modulator 331, and an output unit 341.

The input unit 311 inputs a signal transmitted from the communication terminal.

The amplifier 321 amplifies the signal output from the input unit 311 and removes noise included in the output signal of the input unit 311 through the automatic gain adjusting unit 323.

The modulator 331 modulates the signal output from the amplifier 321 into a carrier band signal. The modulator 331 may use various modulation schemes including a phase locked loop (PLL). Since the stereo sound unit 333 is connected to the modulator 331, the modulator 331 may also modulate the stereo, that is, the stereo sound if necessary.

The output unit 341 amplifies a signal output from the modulator 331 and transmits the amplified signal to the transmitter 141.

The circuit 303 includes an amplifier 361 and an output 421.

The amplifier 411 amplifies a signal output from the microphone 151 and removes noise included in the signal.

The output unit 421 converts the signal output from the amplifier 411 into a voltage level suitable for reception by the communication terminal and outputs the signal to the communication terminal.

4A illustrates a state in which the portable infrared transmitter 101 is coupled to the mobile phone 411. The portable infrared transmitter 101 may be combined with a personal computer (811 of FIG. 8A) in addition to the mobile phone 411, at which time the portable infrared transmitter 411 may communicate with a wired telephone through the Internet connected to the personal computer 811. It may exchange data, listen to data stored in the personal computer 811, for example, music, and listen to various signals transmitted through the Internet.

4B illustrates a state in which the portable infrared transmitter 101 is coupled with the sound reproducing apparatus 421. The sound reproducing apparatus 411 includes a cassette player, a DVD player, an MP3, and the like. The simple controller 431 may be used for the sound reproducing apparatus 411.

5 is a perspective view of an earphone according to a second embodiment of the present invention. Referring to FIG. 5, the e-phone 501 includes a receiver 511, a controller 521, a speaker 531, and a battery 541. Earphone 501 is provided with an earring ring 551, so that the user can put the earphone 501 on his or her ear.

The receiver 511 receives an infrared signal including predetermined information. The receiver 511 is installed in front of the earphone 501 to be suitable for receiving infrared signals transmitted from the portable infrared transmitter 101 shown in FIG. Since the infrared signal is directional, the receiver 511 is installed at a position facing the portable infrared transmitter 101.

The controller 521 is embedded in the earphone 501 and demodulates the signal output from the receiver 511.

The speaker 531 is built in the earphone 501 and converts the signal output from the controller 521 into voice to be heard by the user.

The battery 561 supplies power required for the operation of the receiver 511, the controller 521, and the speaker 531. As the battery 561, a rechargeable battery may be used, or a general battery may be used.

FIG. 6 is a block diagram of the controller 521 shown in FIG. 5. Referring to FIG. 6, the controller 521 includes an input unit 611, an amplifier 621, a demodulator 631, an output unit 641, and a mute unit 633.

The input unit 611 inputs a signal output from the receiver 511.

The amplifier 621 amplifies the signal output from the input unit 611.

The demodulator 631 demodulates the signal output from the amplifier 621. The demodulator 631 is connected to a mute unit 633 to attenuate the noise included in the output signal of the amplifier 621.

The output unit 641 amplifies the output signal of the demodulator 631 and transmits the amplified signal to the speaker 531 of FIG. 5.

7 is a view showing an earphone according to a third embodiment of the present invention. As shown in FIG. 7, two earphones 501 and 502 may be connected to each other by wire 711. When the earphones 501 and 502 receive music, the earphones 501 and 502 also provide stereo to the user. The battery 541 is built in the earphones 501 and 502, and the battery 541 may be mounted only in any one of the earphones 501 and 502 or may be mounted in the earphones 501 and 502, respectively.

8A illustrates a state in which a user listens to music while sitting at a desk and watching office work. Referring to FIG. 8A, the portable infrared transmitters 111 and 113 receive music from the personal computer 811 and transmit the music to the earphones 501. The user may perform the portable infrared transmitters 111 and 113 while wearing the earphones 501 on their ears. Listen to the music you send. In this way, the user can listen to music or make a call when necessary while watching the office work using the portable infrared transmitters 111 and 113 and the earphone 501 of the present invention. At this time, since the wired is not used in the earphone 501, the user is not disturbed at all due to the earphone 501 in handling the office work.

8B is a diagram illustrating a state where a user walks and listens to music. Referring to FIG. 8B, the portable infrared transmitters 111 and 113 receive music from the sound reproducing apparatuses 411 and 421 and transmit the music to the earphones 501 and 502. 113 listens to the music transmitted. In addition, the portable infrared transmitter 113 may be connected to the mobile phone to talk to the other party. As such, the user can listen to music or make a phone call while walking by using the portable infrared transmitter 113 and the earphones 501 and 502 of the present invention. Without this, the user feels very convenient.

In addition, as shown in FIGS. 8A and 8B, since the infrared signal transmitted from the portable infrared transmitter 101 is directional, the infrared signal is not mixed with other signals, and thus the transmission / reception signal is clean without noise.

The portable infrared transmitter 101 may be built in the acoustic reconstruction device 421, the communication terminals 411, 811, and the like. In this case, the user may exchange signals with the sound reproducing apparatus 421 or the communication terminals 411 and 811 if the earphone 501 is provided only.

The best embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, since the portable infrared transmitter 101 and the earphone 501 of the present invention are small in size, they are easy to carry, and since the infrared signal is used, the current consumption of the batteries 131 and 541 is long because the consumption of current is smaller than that of the high frequency signal. Infrared signal has directivity, so there is little interference and there is no interference with interference light, so the signal-to-noise ratio (S / N) is high and the sound quality is good. In addition, by adjusting the amount of infrared light in accordance with the distance between the portable infrared transmitter 101 and the earphone 501, the user can receive a signal having an appropriate size. In other words, it is possible to reduce the amount of infrared light at a short distance and to increase the amount of infrared light at a long distance.

Claims (11)

Auxiliary devices; And A main body electrically connected to the auxiliary device through a wire; The auxiliary device A transmitter for converting an electric signal transmitted from the main body into an infrared signal and firing it into the air; And A microphone for converting a voice input by a user into an electrical signal and transmitting the same to the main body; The main body Inputting the voice signal from a communication terminal that transmits and receives a voice signal including voice information, amplifies and modulates the input voice signal, and transmits the received voice signal to the transmitter, and amplifies the signal output from the microphone and transmits the signal to the communication terminal. Controller; And And a rechargeable battery for operating the controller. The method of claim 1, wherein the controller An input unit for inputting a signal transmitted from the communication terminal; A first amplifier amplifying an output signal of the input unit; And And a modulator for converting the signal output from the first amplifier into a carrier band signal and transmitting the signal to the transmitter. The method of claim 1, wherein the controller A second amplifier for amplifying a signal output from the microphone; And And an output unit for converting and outputting a signal output from the second amplifying unit to a voltage level suitable for reception by the communication terminal. The portable infrared transmitter of claim 1, wherein the portable infrared transmitter may be embedded in a communication terminal. The portable infrared transmitter of claim 1, wherein the communication terminal is one of a mobile phone, a personal computer, and a voice reproducing apparatus. The portable infrared transmitter of claim 1, further comprising a fixing device that can fix the auxiliary device to a body of a user. A receiver for receiving an infrared signal transmitted from a portable infrared transmitter; A controller for demodulating a signal output from the receiver; A speaker for converting a signal output from the controller into voice; And Earphones characterized in that it comprises a battery for supplying power to the receiver, the controller and the speaker. 8. The system of claim 7, wherein the controller is An input unit for inputting a signal received by the receiver; A demodulator for demodulating the signal output from the input unit; And Wireless earphone having an output unit for amplifying the output of the demodulator and a transfer to the speaker. First and second earphones electrically connected to each other; Each earphone is A receiver for receiving an infrared signal transmitted from a portable infrared transmitter; A controller for demodulating a signal output from the receiver; A speaker for converting a signal output from the controller into voice; And Earphones having a battery for supplying power to the receiver, the controller and the speaker. 10. The earphone of claim 9, wherein the battery may be mounted only on one of the first and second earphones, wherein the battery supplies power to both the first and second earphones. The earphone of claim 10, wherein the music is output in stereo when the speakers output music.