KR200332362Y1 - MP3 Player With Transmitter Interface Include Memory Chip And Cigar Plug - Google Patents

Abstract

The present invention can be said to be an MP3 player made of a cigarette lighter jack and mounted in a cigarette lighter jack. When an audio file is transmitted in an FM form by embedding an FM transmitter inside the MP3 player, an audio device mounted on one side of the vehicle is installed. The present invention relates to an MP3 player with a transmitter chip including a memory chip and a cigar plug that detects the FM receiver and reproduces high sound quality.

In addition, since the interface has an external audio signal input terminal, a mobile phone, a CD player, or a cassette player can be used in addition to an MP3 sound source, and the cigar plug and the MP3 player of the interface can be separated, respectively. City has the advantage that only the MP3 player can be used separately.

Description

MP3 Player With Transmitter Interface Include Memory Chip And Cigar Plug}

The present invention can be said to be an MP3 player made of a cigarette lighter jack and mounted in a cigarette lighter jack. When an audio file is transmitted in an FM form by embedding an FM transmitter inside the MP3 player, an audio device mounted on one side of the vehicle is installed. It is related to MP3 player and transmitter interface with a built-in memory chip and cigar plug that detects the FM receiver and reproduces high sound quality.

In addition, since the interface has an external audio signal input terminal, a mobile phone, a CD player, or a cassette player can be used in addition to an MP3 sound source, and the cigar plug and the MP3 player of the interface can be separated, respectively. City has the advantage that only the MP3 player can be used separately.

Recently, the technology of listening to output audio from a portable audio device (for example, a CD player) using an amplifier and a speaker of a car audio set has been shown. For this purpose, a separate FM modulator is installed in the vehicle. The FM modulator is inconvenient to mount and the available transmission frequency is limited to one or two so that noise due to intermodulation caused by similar broadcast frequencies in the surroundings can be achieved. There is a problem that the sound quality is lowered, such as generation.

In addition, the frequency modulation method is limited to the FM modulation method can not form a variety of transmission formats, there is a problem that the wireless transmission and reception that is emerging recently can be implemented only by wired transmission and reception.

The present invention relates to an apparatus for reproducing an audio file in which an audio signal is converted into a digital signal by a specific compression technique, and more particularly, to an output unit included in an apparatus for reproducing an audio file. It relates to a device for outputting.

An apparatus 100 for reproducing an audio file, commonly referred to as an 'MP3 player', is a device for reproducing a compressed audio file by a technique of digitizing and compressing an analog audio signal. A general hardware configuration is used to store the audio file. A command input unit 620 including a control unit including a memory 610 and a digital signal processing (DSP) device for processing an audio file and reproducing an audio signal, and a plurality of command switches for inputting a predetermined control command to the control unit. A display unit 511 for outputting an operation state and other images, an output unit 640 for outputting an audio signal output from the controller, and an earphone jack 650 connected to the output unit 640 and coupled with earphones or headphones ) And a power supply unit 660 for supplying the power.

Recently, the use of audio files, commonly referred to as MP3 files, is easily obtained and stored or transmitted through the Internet and the spread of the Internet communication network. Such audio files are generally reproduced and output as audio signals through a predetermined program in a computer, but dedicated devices for reproducing audio files are widely used due to miniaturization of memory and miniaturization of digital signal processing apparatus.

Such an audio file reproducing apparatus is compact and portable, and is intended for a user to listen to music by playing an audio file while on the move, and listening to music by combining earphones or headphones with an output jack provided in the apparatus. The music was listened to through a small speaker.

However, when the earphone or the headphone are used for a long time, the ear fatigues and weakens the hearing power, and the small speaker does not provide a sound desired by the user. In order to solve such a problem, as shown in FIG. 5, the earphone jack 650 is connected to a wire to receive an audio signal, and to transmit the signal at a specific radio frequency through a predetermined modulation step. An external device for listening to music through a speaker provided in the vehicle or a speaker provided in the vehicle through an audio device provided with a wireless receiver, for example, a general audio device or a vehicle audio device provided in a vehicle. The transmitter was developed.

The external wireless transmitter is connected to the earphone jack 650 by wire and receives an input unit for receiving an audio signal, a modulator for modulating the audio signal input through the input unit, and a modulated audio signal at a predetermined radio frequency. In general, the external wireless transmitter has a fixed transmission frequency at a specific frequency. In particular, the external wireless transmitter requires a separate power supply. Therefore, when the power supply is weakened, the transmission output of the wireless transmitter is reduced. There is a problem that the transmission is not properly made due to weakening, and troublesome to replace or charge the power supply of the power supply.

The present invention was created in view of the above problems, and provides an MP3 player and transmitter interface with a built-in memory chip and a cigar plug by using a cigarette lighter jack of a car that is easy to install and prevents interference or noise. Has its purpose.

In addition, the present invention is to separate the transmitting and receiving antenna to increase the sensitivity of the transmission and reception, as well as the existing FM modulation method, AM transmission method, data communication (near field communication, Bluetooth (blutooth, wireless LAN, etc.) wireless transmission and reception is possible The goal is to implement a quality car audio system.

In addition, the present invention was devised to solve the above problems, and since the wireless transmitter is included in the audio file playback device (MP3 player), the user can select an FM (Frequency Modulation) transmission frequency for transmission. It provides an audio file reproducing apparatus that can listen to music through a radio receiver provided in an audio device or a vehicle audio device by transmitting an audio signal through a wireless transmitter provided in the internal output unit without the need for connection. There is a purpose.

1 is a view showing a connection form with various types of audio device according to the present invention.

2 is a view to separate the interface according to the present invention to carry only the MP3 player and the transmitter

3 is a diagram illustrating an embodiment in which an MP3 player and a transmitter can be carried only by separating an interface according to the present invention.

Figure 4 is a perspective view numbered appearance for explaining each part of the interface according to the present invention.

5 is a diagram illustrating an internal system configuration of an interface according to the present invention using a cigarette lighter jack of a vehicle.

(Explanation of symbols for the main parts of the drawing)

100.External housing 101 ... Plus (+) power terminal

102.Negative (-) Power Terminal

200 ... Display 201 ... Power on / off key

202 LEDs 203 Function keys

205 ... (for frequency change) up / down keys

301 ... (for audio signal reception) stereo jack

302 ... USB port 303 ... (for power supply) DC jack

501 ... microcomputer part 502 ... encoding part

503 ... oscillator section 504 ... PLL control section

505 ... RF amplifier section 506 ... Transmission antenna section

507 Receive antenna section 508 Tuner section

509 Detecting 510 Decoding

511 Display unit 512 Key control unit

513 ... DC / DC power supply

610 ... Memory section 620 ... Command input section

640 ... output 650 ... earphone jack

In order to achieve the above object MP3 player combined transmitter interface with a memory chip and cigar plug according to the present invention,

Some form of outer housing;

An MP3 player unit embedded in the outer housing and configured to transmit a sound source between an audio set or an external device of a vehicle;

A signal transmission / reception circuit unit embedded in the external housing and configured to transmit / receive a signal between an audio set of an automobile and an external device;

A cigar plug provided on one side of the outer housing and having a plus (+) / minus (−) power terminal connected to a cigarette lighter jack of an automobile;

A power on / off key provided at a predetermined portion of the outer housing to turn on / off power supplied to the transmission / reception circuit unit;

An LED provided at a predetermined portion of the outer housing and having at least one color to indicate a state of power supplied to the transmit / receive circuit unit and an operation state of the device;

An up / down key provided at a predetermined portion of the outer housing and configured to change a frequency according to a channel selection of a user;

A display window provided at a predetermined portion of the outer housing and displaying a frequency of an arbitrary channel selected according to the adjustment of the up / down keys;

A selector provided at a predetermined portion of the outer housing and configured to select one of a display of a selected frequency of the interface and an operation state of a sound source;

A reverse / play / pose / stop / forward / orbitus key provided at a predetermined portion of the outer housing and configured to change a sound source according to a user's selection of a sound source;

A DC power jack provided at a predetermined portion of the outer housing to supply power to an external portable audio device; And

A USB port provided at a predetermined portion of the outer housing and configured to interactively communicate with an external sound source and data;

An audio input jack provided at a predetermined portion of the outer housing and receiving an external sound source and data;

It is characterized in that it is provided in a predetermined portion of the outer housing, and comprises a stereo jack for audio output.

Here, the signal transmission / reception circuit unit

A microcomputer unit for controlling the system as a whole;

An encoding unit for converting data input from an MP3 player or an external device according to a control command of the microcomputer unit to match a transmission format;

An oscillator unit generating a signal having an arbitrary frequency corresponding to the data converted by the encoder;

A phase locked loop (PLL) control unit for comparing the frequency of the signal generated from the oscillator unit with a set frequency and feeding back the deviation to the microcomputer unit;

An RF amplifier unit for amplifying the signal output from the oscillator;

A transmission antenna unit for transmitting a signal output through the RF amplifier unit;

A receiving antenna unit for receiving a radio signal from an external device;

A tuner unit for amplifying the received wireless signal and selecting a desired signal;

A detector for restoring an original signal wave according to a modulation method of a signal passed through the tuner unit;

A decoding unit for restoring data received in a predetermined format through the detector into an original data signal;

A display unit which displays a frequency of a selected channel on a display window according to the control of the microcomputer unit;

A key control unit for controlling a key for changing the channel frequency or turning on / off a system power supply; And

It is characterized in that it comprises a DC / DC power supply unit for receiving the DC power of the vehicle is converted to a different size of DC power supply to supply to the components of the system and external equipment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 illustrate a signal transmission / reception device using a cigarette lighter jack of a vehicle according to the present invention, FIG. 4 is an external perspective view, and FIG. 5 is an internal system configuration diagram of the device.

4 and 5, the MP3 player combined transmitter interface using the cigarette lighter jack of the vehicle according to the present invention is composed of an external housing 100 and an MP3 player combined transmitter interface unit embedded in the external housing 100. do.

One side of the outer housing 100 is provided with a positive (+) power terminal 101 and a negative (-) power terminal 102 connected to the cigarette lighter jack of the vehicle, and the MP3 at a predetermined portion of the housing 100. A power on / off key 201 for turning on / off the power supplied to the player combined transmitter interface unit, and an LED for displaying the operation state of the power on / off key and the operation state of the MP3 player in at least one color ( 202 and an up / down key 205 for changing a frequency according to a user's channel selection, and a display window 200 for displaying a frequency of an arbitrary channel selected according to the adjustment of the up / down key 205. do. The display window 200 may also be used as a display window 200 for displaying the operation state of the MP3 player, and a selector which is a selection switch for this may be incorporated.

In addition, the MP3 player is characterized by consisting of a reverse / play / pose / stop / forward / orientus key 203 for changing the sound source according to the user's selection of the sound source.

In addition, one side of the outer housing 100 is provided with a DC power jack 303 for supplying power to an external portable audio device and a stereo jack 301 for connection with the earphone jack of the portable audio device. .

As shown in FIG. 5, the MP3 player and transmitter interface provided in the housing 100 as described above includes a microcomputer unit 501 for controlling the system as a whole, and a control command of the microcomputer unit 501. Accordingly, an encoder 502 for converting data input from an external device into a transmission format, and an oscillator unit for generating a signal having an arbitrary frequency corresponding to the data converted by the encoder 502 ( 503 and the PLL control unit 504 for comparing the frequency of the signal generated from the oscillator unit 503 with the set frequency and feeding back the deviation to the microcomputer unit 501, and from the oscillator unit 503. An RF amplifier unit 505 for amplifying the output signal, a transmitting antenna unit 506 for transmitting a signal output through the RF amplifier unit 505, and receiving a radio signal from an external device The receiving antenna unit 507, a tuner unit 508 for amplifying the received radio signal to select a desired signal, and a modulation method (for example, FM or AM method) of the signal passing through the tuner unit 508. A detection unit 509 for restoring the original signal wave, and data received in a predetermined format via the detection unit 509 into the original data signal (for example, the compressed data into the original data signal). A decoding unit 510 for restoring, a display unit 511 for displaying a frequency of a selected channel under the control of the microcomputer unit 501, and a channel for changing the channel frequency or turning on / off a system power supply. The key control unit 512 for controlling the keys 205 and the DC / DC power supply unit 513 that receives the DC power of the vehicle and converts the DC power of the vehicle into a different sized DC power and supplies the components of the system and external devices. It is configured to include.

As such, the present invention does not separate the transmitting and receiving circuits, but integrates the transmitting and receiving circuits so that the functions are organic, so that short-range data communication (Wireless LAN, Bluetooth, etc.) can be integrated.

In addition, the data signal input from an external portable audio device is converted into various transmission formats of FM modulation, AM modulation, and wireless data communication methods (near field data communication, Bluetooth, WLAN, etc.) as necessary.

Then, the operation of the MP3 player combined transmitter interface using the cigarette lighter jack of the vehicle according to the present invention having the above configuration will be described with reference to FIGS. 4 and 5.

If you want to listen to the output audio from a portable audio device (e.g., audio cassette, CD player, MP3 player, etc.) through the speaker of the car audio set, first of all, insert the MP3 player and transmitter interface of the present device into the cigarette lighter jack of the car. Will be fitted. That is, by using the positive (+) terminal 101 and the negative (-) terminal 102 of the MP3 player combined transmitter interface of the present invention, the positive and negative terminal portions of the cigarette lighter jack of the vehicle are respectively provided. It will be connected. In this way, when the MP3 player and transmitter interface is mounted on the cigarette lighter jack, the DC / DC power supply unit 513 receives the DC 12V power from the car battery and converts the DC 3V power to supply the DC 3V power. It is output to the player combined transmitter interface and external power, respectively.

On the other hand, when the user is switched on by pressing the power on / off key 201 in the state of the wiring operation as described above, power is supplied to each component of the MP3 player combined transmitter interface of the present invention, each component It becomes the state which can exhibit each function.

When the power on / off key 201 is pressed and switched on as described above, the embedded MP3 player has a booting program and an operating program for storing and controlling a digital signal in which an audio signal is compressed using a predetermined compression technique. A control unit 670 including a stored flash memory 610 and a digital signal processing unit, a command input unit 620 for a user to input a control command to the control unit, and display an operation state according to a command input through the command input unit. Through the display unit 511 and the output unit 640 for outputting a digital signal reproduced as an audio signal through the control unit to reproduce a high quality audio signal.

In this state, when the user operates the function key 203 of the MP3 player as shown in FIG. 4, output audio or data 640 from the MP3 player is input to the encoding unit 502 of the present invention. Then, the encoding unit 502 converts the input data according to the control command of the microcomputer unit 501 to match the transmission format. Accordingly, the oscillator unit 503 generates a signal having an arbitrary frequency corresponding to the data converted by the encoding unit 502, and the PLL control unit 504 is the frequency of the signal generated from the oscillator unit 503 According to the set frequency, that is, the user selects a channel using the up / down key 205 (in this case, the user selects a channel having various frequencies, and the frequency of the selected channel is displayed on the display window 200). The given frequencies are compared and the deviation is fed back to the microcomputer unit 501. Then, the microcomputer unit 501 issues a control command in the direction of reducing the input deviation, and accordingly the oscillator unit 503 changes the frequency to generate a signal.

When a signal having a predetermined frequency is output from the oscillator unit 503 in this way, the RF amplifier unit 505 receives the amplified output signal and amplifies the signal and transmits the amplified signal through the transmission antenna unit 506. On the other hand, the signal transmitted through the transmission antenna unit 506 is received by the receiving antenna of the audio set of the car, after which the signal is finally output through the speaker of the car audio set via the circuit unit inside the car audio set. As a result, the user can listen to the audio signal (eg, the MP3 audio signal) output from the MP3 player-compatible transmitter interface through the speaker of the car audio set. At this time, the audio output through the speaker is output as a signal wave of the frequency band according to the user's channel selection, and the audio of clear sound without interference or noise is heard.

On the other hand, the above has described the MP3 player combined transmitter interface of the present invention, if it is to receive and relay MP3 data wirelessly to use the receiver of the MP3 player combined transmitter interface of the present invention.

That is, the radio signal transmitted from the external device is received by the reception antenna unit 507 of the transmission / reception apparatus of the present invention, and the tuner unit 508 amplifies the received radio signal to select a desired signal. Then, the detector 509 restores the original signal wave according to the modulation method (for example, FM or AM method) of the signal passing through the tuner unit 508, and the decoding unit 510 replaces the detector 509. The data received in a predetermined format is restored to the original data signal (for example, the compressed data is restored to the original data signal). The restored data is then transmitted to the corresponding external device that the user wants to receive through the connector.

In addition, the MP3 player combined transmitter interface with the memory chip and the cigar plug may include a DC / DC power supply unit 10 for stepping down or stepping up a DC power supply of a vehicle as shown in FIGS. 2 to 3 and the MP3 player combined transmitter interface 20. ) Can be configured to be detachably detached, and the portable terminal of the MP3 player combined transmitter interface 20 can be carried in another place, for example, using the receiver of the audio set in a room having an audio set. Can be used and it is characterized.

In addition, a built-in rechargeable battery inside the interface 20 may be charged through the DC / DC power supply unit 10 or the power supply DC jack 303 of the interface 20, and the memory unit 610 of FIG. 5. It may be modified to a removable flash card, various modifications through the present invention is easy to implement by those skilled in the art having general common sense which will be attributed to the scope of the present invention.

As described above, the MP3 player / transmitter interface having a built-in memory chip and a cigar plug according to the present invention has a plus and a minus power terminal of the MP3 player and a transmitter interface of the present invention, respectively. Since mounting is completed by connecting, it has the advantage of being easy to install in an automobile. In addition, since the output signal from the portable audio device is changed to various frequencies according to the user's selection and transmitted to the audio set of the car, it is possible to prevent interference or noise generation, and thus the speaker of the car audio set without degrading sound quality. There is an advantage that can be appreciated through.

In particular, by separately transmitting and receiving antennas, MP3 data signals can be wirelessly received and relayed, and the data input from external devices (laptops, PDAs, game consoles, etc.) can be converted to suit various transmission formats. This enables the implementation of a system capable of high quality data communication without interference.

In addition, as described above, the MP3 player-integrated transmitter interface with the memory chip and cigar plug of the present invention can be modulated by FM modulation so that audio signals can be output wirelessly, even without using earphones or headphones. Since it is possible to listen to music using another audio device equipped with an audio file playback device in a place where the audio device is equipped or in a vehicle, the FM transmitter is built-in, which is inconvenient and hassle due to power supply. It is possible to solve the problem and the user can select the transmission frequency, so it is possible to select and use the transmission frequency that transmits well according to the surrounding environment. Therefore, it is possible to listen to the music without noise through the audio device or the audio device provided in the vehicle. have.

Claims (3)

In a car with a stereo and speaker system and a cigarette lighter jack, MP3 player combined transmitter interface using the cigarette lighter jack, Some form of outer housing; An MP3 player unit embedded in the outer housing and configured to transmit a sound source between an audio set or an external device of a vehicle; A signal transmission / reception circuit unit embedded in the external housing and configured to transmit / receive a signal between an audio set of an automobile and an external device; A cigar plug provided on one side of the outer housing and having a plus (+) / minus (−) power terminal connected to a cigarette lighter jack of a vehicle; A power on / off key provided at a predetermined portion of the outer housing to turn on / off power supplied to the transmission / reception circuit unit; An LED provided at a predetermined portion of the outer housing and having at least one color to indicate a state of power supplied to the transmit / receive circuit unit and an operation state of the device; An up / down key provided at a predetermined portion of the outer housing and configured to change a frequency according to a channel selection of a user; A display window provided at a predetermined portion of the outer housing and displaying a frequency of an arbitrary channel selected according to the adjustment of the up / down keys; A selector provided at a predetermined portion of the outer housing and configured to select one of a display of a selected frequency of the interface and an operation state of a sound source; A reverse / play / pose / stop / forward / orbitus key provided at a predetermined portion of the outer housing and configured to change a sound source according to a user's selection of a sound source; A DC power jack provided at a predetermined portion of the outer housing to supply power to an external portable audio device; And A USB port provided at a predetermined portion of the outer housing and configured to interactively communicate with an external sound source and data; An audio input jack provided at a predetermined portion of the outer housing and receiving an external sound source and data; MP3 player combined transmitter interface provided with a memory chip and a cigar plug, characterized in that provided in a predetermined portion of the outer housing, including a stereo jack for audio output. The method of claim 1, wherein the interface, MP3 player with a built-in memory chip and cigar plug, characterized in that the removable DC / DC power supply unit 10 for stepping down or stepping up the DC power of the car and the MP3 player combined transmitter interface unit 20 is separated separately Combined transmitter interface. The method of claim 1, wherein the memory unit of the interface, MP3 player and transmitter interface with a built-in memory chip and cigar plug, characterized in that the memory chip of the memory unit 610 is easily removable.