KR200234964Y1 - Portable Infrared transmitter and wireless ear phone - Google Patents

Abstract

The present invention relates to a portable infrared transmitter and earphone, the portable infrared transmitter comprises an auxiliary device; 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 for operating the controller, thereby improving the sound quality of the transmitted / received signal.

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.

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.

A brief description of each drawing is provided to more fully understand the drawings, which are incorporated in the detailed description of the invention.

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 comprises: a transmitter for converting an electric signal transmitted from the main body into an infrared data signal and radiating it 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 it provides a rechargeable battery for operating the controller.

Preferably, the controller comprises an input unit for receiving a signal transmitted from the communication terminal; A first amplifier amplifying a signal output through the input unit; And a modulator that takes frequent samples of the sound from the amplified signal applied from the first amplifier and expresses the extracted sound modulation values in binary to convert the sound or analog information into binary information and transmits the binary information to the transmitter.

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

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

Preferably, the apparatus further includes a fixing device capable of fixing the auxiliary device to a body of a user. In order to achieve the above technical problem, the present invention provides a receiver for receiving an infrared signal transmitted from a portable infrared transmitter; A controller configured to receive and demodulate a signal output from the receiver; A speaker which receives a signal output from the controller and converts the signal into a voice so that a user can hear the signal; And a battery supplying power to the receiver, the controller, and the speaker.

Preferably, the controller comprises an input unit for receiving a signal received by the receiver; A demodulator for receiving and demodulating a data signal applied from the input unit; And an output unit configured to amplify the data signal applied from the demodulator and transmit the amplified data signal to the speaker.

In order to achieve the above technical problem, the present invention also has a first and second earphones which are electrically connected to each other, the first and second earphones receiving a infrared signal transmitted from the portable infrared transmitter; A controller for demodulating a signal output from the receiver; A speaker for transmitting a signal output from the controller so that a user who converts the signal into a voice can hear the speaker; And a battery for supplying power to the receiver, the controller, and the speaker. Preferably, the battery may be mounted only on one of the first and second earphones, wherein The battery is characterized by supplying power to both the first and second earphones. Preferably, the music is output in stereo when the speakers output music.

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 that illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention 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. As shown in 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 are installed to exchange signals with each other through the wires 115, and the wires 115 may be detachably attached 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 radiates it into the air, and the transmitter 141 and a main body 111 by converting a voice input by the user into an electric signal. It is provided with a microphone 151 to transmit to. 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 a signal and transmits the signal to the transmitter 141, and amplifies the signal output from the microphone 151 and transmits the signal to the communication terminal. 5 to 501 to receive a signal of a proper size, the controller 121 reduces the amount of light of the infrared signal when the distance between the auxiliary device 113 and the earphone 501 is close, the auxiliary device 113 When the distance between the earphone and the earphone 501 is large, the user can receive a signal having an appropriate size by increasing the amount of light of the infrared signal.

The rechargeable battery 131 provides electric power for operating the controller 121, and the rechargeable battery 131 may use a general battery.

The main body is provided with a plurality of 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 may be fixed to a part of the user's body, such as a collar or a pocket of the upper garment, the fixing device 161 may be a clip, tongs and the like, and the shape and The shape can be formed in various ways.

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 be used as a hands-free device of the mobile phone.

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

Figure 2a shows an adapter (Adapter), the adapter 211 inputs a commercial voltage, for example 110 volts or 220 volts voltage through a plug (213), which is a portable infrared transmitter (Fig. The voltage is dropped to a suitable voltage for 101, and the voltage is lowered to a voltage for charging the battery 131 built in the portable infrared transmitter 101, and the output voltage is converted into a DC voltage. 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.

FIG. 2B illustrates a connection device 205 for connecting a portable infrared transmitter (101 in FIG. 1) and a communication terminal, wherein connection jacks 221 and 223 are electrically connected to each other through wires. One of the connection jacks 221 is inserted into the main body (111 of FIG. 1), the other connection jack 223 is inserted into the communication terminal or sound reproduction device.

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 receives a signal transmitted from the communication terminal and applies the signal to the amplifying unit 321, and the amplifying unit 321 amplifies the signal applied from the input unit 311 to obtain the automatic gain. When the signal is applied to the adjusting section 323, the automatic gain adjusting section 323 sets the output characteristic amplitude of the signal to the input when the signal applied through the input section 311 is amplified by the amplifying section. It automatically controls the signal to remain constant regardless of change over the range of and removes the noise contained in the output signal.

The modulator 331 takes frequent samples of the sound from the amplified signal applied from the amplifier 321 and converts the analog sound information into binary information by representing the extracted sound modulation values in binary form. In addition, 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 be used. Also modulates to stereo, ie stereo sound, if necessary.

The output unit 341 amplifies a data signal applied from the modulator 331 and transmits the data signal to the transmitter 141 so that the data signal can be radiated to the air.

The circuit 303 includes an amplifier 361 and an output unit 421. The amplifier 411 amplifies a signal output from the microphone 151 and removes noise included in the signal. When the data signal is applied to the output unit 421, the output unit 421 converts the signal applied from the amplifier 411 to a voltage level suitable for the communication terminal to output.

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, wherein the portable infrared transmitter 411 is connected to a wired telephone and a signal through the Internet connected to the personal computer 811. It can 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, and a 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. As shown in FIG. 5, the e-phone 501 includes a receiver 511, a controller 521, a speaker 531, and a battery 541. The earphone 501 is provided with an earring ring 551 so that the user can hang the earphone 501 on his or her ear, and the receiver 511 receives an infrared signal including predetermined information. . In addition, the receiver 511 is installed on the front of the earphone 501 to be suitable for receiving the infrared signal transmitted from the portable infrared transmitter 101 shown in Figure 1, the earphone 501 is installed It is not limited only to the front of the earphone, and any position can be positioned above the correct position for receiving the data signal. Since the infrared signal is directional, the receiver 511 is located at the position facing the portable infrared transmitter 101. Is installed.

The controller 521 is embedded in the earphone 501. If the demodulated signal output from the receiver 511 is applied and the demodulated data signal is applied to the speaker 531, the speaker 531 is the earphone 501. It is embedded in, and converts the signal output from the controller 521 into a voice to be transmitted to the user to hear.

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. Do.

FIG. 6 is a block diagram of the controller 521 shown in FIG. 5. As shown in 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.

When the input unit 611 inputs a data signal output from the receiver 511 and applies it to the amplifying unit 621, the amplifying unit 621 amplifies the signal applied from the input unit 611. The data signal is applied to the demodulator. 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 for transmission by the user.

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 via a wire 711. When the earphones 501 and 502 receive music, a stereo may be provided to the user, and a battery 541 is built into the earphones 501 and 502, and the battery 541 may be mounted only in one of the earphones 501 and 502. The earphones 501 and 502 may be mounted on the earphones.

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 earphone 501, and the user wears the portable infrared transmitters 111 and 113 while the earphone 501 is worn on the ear. The user can listen to the music using the portable infrared transmitters 111 and 113 and the earphone 501 of the present invention while listening to music or making a call when necessary. 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, and the user wears the earphones 501 and 502 to the ear. Listen to the music you are sending. In addition, the portable infrared transmitter 113 may be connected to a mobile phone to make a call with the other party. As such, the user may listen to music or talk while walking by using the portable infrared transmitter 113 and the earphones 501 and 502 of the present invention. Since the wires are not used in the earphones 501 and 502, there is no cumbersome due to the wires, so 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 should be defined by the technical spirit of the appended claims.

As described above, the portable infrared transmitter and the earphone of the present invention are compact and easy to carry, and because the infrared signal is used, the current consumption is long due to the low current consumption compared to the high frequency signal, and the infrared signal has directivity because of the interference. The sound quality is good due to the low signal to noise ratio (S / N) due to the low interference and no interference. In addition, by adjusting the amount of infrared light in accordance with the distance between the portable infrared transmitter and the earphone, 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 (10)

Auxiliary devices; And A main body electrically connected to the auxiliary device through a wire; The auxiliary device includes: a transmitter for converting an electrical signal transmitted from the main body into an infrared data signal and radiating 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 inputs 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 to the communication terminal. A controller for transmitting to; And And a rechargeable battery for operating the controller. According to claim 1, The controller may include an input unit receiving a signal transmitted from the communication terminal; A first amplifier amplifying a signal output through the input unit; And And a modulator for taking a frequent sample of sound from the amplified signal applied from the first amplifier and expressing the extracted sound modulation value in binary, thereby converting sound or analog information into binary information and transmitting the same to the transmitter. Portable infrared transmitter. According to claim 1, The controller includes a second amplifier for amplifying the 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. According to claim 1, The portable infrared transmitter is built into the communication terminal, characterized in that for direct radiation of the infrared data signal to the portable infrared transmitter. According to claim 1, The communication terminal is a portable infrared transmitter, characterized in that one of a mobile phone, a personal computer and a voice playback device. According to claim 1, And a fixing device capable of fixing the auxiliary device to a predetermined part of the user's body. A receiver for receiving an infrared signal transmitted from a portable infrared transmitter; A controller configured to receive and demodulate a signal output from the receiver; A speaker which receives a signal output from the controller and converts the signal into a voice so that a user can hear the signal; And Earphones having a battery for supplying power to the receiver, the controller and the speaker. The method of claim 7, wherein The controller includes an input unit for receiving a signal received by the receiver; A demodulator for receiving and demodulating a data signal applied from the input unit; And And an output unit configured to amplify the data signal applied from the demodulator and transmit the amplified data signal to the speaker to transmit the data signal. Having first and second earphones electrically connected to each other, The first and second earphones A receiver for receiving an infrared signal transmitted from the portable infrared transmitter; A controller for demodulating a signal output from the receiver; A speaker for transmitting a signal output from the controller so that a user who converts the signal into voice can hear the speaker; And Earphones comprising a battery for supplying power to the receiver, the controller and the speaker. The method of claim 9, 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.