KR100580039B1 - Multi-Type Audio System in Vehicle - Google Patents

Abstract

The present invention relates to a multi-type audio system of a vehicle, comprising: a decoder unit for processing a digital sound signal from various external digital sound devices and outputting an analog sound signal; And an encoder for converting an analog or digital sound signal inside the system and converting the sound signal into individual sound signals corresponding to various external sound devices.

Description

Multi-Type Audio System in Vehicle

1 is a block diagram of a multi-type audio system of a vehicle according to the present invention.

-Explanation of symbols for the main parts of the drawing-

100: external digital output device 200: external digital data device

300: audio system 310: decoder unit

311: Demultiplexer 312: MP3 Audio Decoder

313: WMA Audio Decoder 320: Amplifier

330: microcomputer 340: USB controller

350: CD device 360: encoder

370: tape / radio 380: DSP

400: speaker

The present invention relates to an audio system of a vehicle, and in particular, it is possible to output various sound sources such as digital and analog, and a vehicle multi-type that can play or store various sound sources output from the audio system of the vehicle by connecting to various external devices. Relates to an audio system.

In general, a vehicle audio system is composed of a radio, a tape player, a compact disc player, and tunes a specific broadcast frequency channel by radio to listen to a desired broadcast or to store music stored on a predetermined recording medium through a tape player or a compact disc player. Play and listen.

However, the function of the conventional vehicle audio remains a passive function of listening to music or the like by receiving a signal from the outside or reproducing acoustic information recorded on an external storage medium. That is, the playable sound source is limited to parts of digital and analog signals, and various sound sources that are received or reproduced cannot be stored in various external storage media or played on an audio device.

There are various kinds of portable audio equipment such as MD, MP3, WMA, etc. in addition to audio equipment such as tape, CD, DVD, etc. used in the vehicle, and the audio system of the vehicle cannot exchange data with each other. The driver of the vehicle that uses the has been a significant inconvenience in the use of sound equipment.

The present invention is to solve such a problem, the purpose of enabling the recording, input / output, playback, etc. of a variety of sound equipment according to the needs of the driver to maximize the vehicle audio system to the driver of the vehicle. do.

In order to achieve the above object, the present invention has a plurality of ports for inputting various sound signals, such as analog and digital input from the outside, and can decode a digital signal inside the audio to output sound through a speaker. The present invention provides an automotive multi-type audio system including an encoder and an amplifier, and including signal conversion means for transmitting digital or analog signals in audio to various external sound devices.

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

1 is a block diagram of a multi-type audio system of a vehicle according to the present invention. As shown in FIG. 1, the present invention includes an external digital output device 100, an external digital data device 200, an audio system 300 inside a vehicle, a speaker 400, and the like.

The external digital output device 100 is an independent digital sound device that is separated from the vehicle audio system and corresponds to various sound devices such as CD, MD, MP3, WAV, and WMA (Windos media audio). Here, the external digital output device 100 mainly refers to an audio device that outputs a digital signal. Of course, the external audio device that outputs an analog signal such as a tape may be included. Signals such as digital output from the external digital output device 100 are transmitted to the audio system 300 using a transmission means such as a composite and an optical cable.

The external digital data device 200 is an external audio device for storing or reproducing a digital or analog signal output from the audio system 300, and may include a USB storage device, an MP3 player, an MD, a tape recorder, and the like. The signal output from the audio system 300 is transmitted to the external digital data device 200 using a transmission means such as a USB, a composite, an optical cable, or the like.

Terminals for transmitting signals between the external digital output device 100 and the external digital data device 200 and the internal audio system are provided side by side on the control panel of the audio system. In addition to the three ports illustrated here, additional input / output terminals may be installed.

The audio system 300 in the vehicle includes a decoder unit 310, an amplifier 320, a microcomputer 330, a USB controller 340, a CD 350, an encoder for MP3 and WMA 360, and a tape / radio unit ( 370, a digital signal processor (DSP) 380, and the like.

The decoder unit 310 is composed of a demultiplexer 311, an MP3 audio decoder 312, a WMA audio decoder 313, and the like.

The demultiplexer 311 separates the multiplexed digital signals input from the external digital output device 100 into respective signals. Although the MP3 signal and the WMA signal are illustrated as separate signals, a CD signal may also be included.

The MP3 audio decoder 312 and the WMA audio decoder 313 decode the MP3 signal and the WMA signal that are separately output from the demultiplexer 311. That is, in order to output an audio signal through the speaker, the digital signal is restored to an analog signal which is an acoustic signal.

The amplifier 320 amplifies the signal to output the MP3 signal and the WMA signal output from the MP3 audio decoder 312 and the WMA audio decoder 313, respectively, through the speaker.

The speaker 400 outputs the signal amplified by the amplifier 320 as a sound.

Next, various sound sources output from the internal audio system, for example, an analog or digital signal such as radio, CD, tape, DVD, etc. using an encoder, may be used for external sound equipment, for example, MD, MP3 player, tape recorder, etc. This section describes how to transfer and play or store data on various devices.

The microcomputer 330 controls the decoder 310 for outputting an external digital signal through a speaker according to a control signal input by various buttons of a control panel, and transmits an internal signal to an external sound device. 340, the encoder 360, the digital signal processor 380, and the like.

The USB controller 340 controls a process of inputting and outputting signals from inside and outside through a USB port provided in the control panel.

The CD 350 is a medium for storing digital signals. The digital signals stored in the CD 350 are converted by the encoder 360 into digital signals suitable for the respective external acoustic devices, and transmitted to the external audio devices. The external device receives and stores or plays each corresponding signal. Although FIG. 1 shows only the MP3 and WMA as the encoder 360, it may be configured to correspond to various external acoustic devices.

The tape / radio 370 usually uses an analog signal, which is converted into a digital signal by the digital signal processor 380. The converted digital signal is directly transmitted to an external device that reproduces or stores a general digital signal without undergoing separate signal processing. However, when the tape / radio signal converted into a digital signal is to be stored or reproduced in an MP3 player or a WMA device, the encoder 360 is reconverted to a digital signal corresponding to each external device.

As such, the internal CD or tape / radio signal is converted into a signal corresponding to each external sound device, and then transmitted to the external digital data device 200 by USB, composite, optical cable, or the like.

According to the multi-type audio system of the vehicle as described above, it is possible to record, input / output, playback, etc. for a variety of sound equipment according to the driver's needs, so that the driver can make full use of portable audio equipment in the vehicle.

Claims (4)

In the audio system of a vehicle, It is equipped with a demultiplexer for separating various external digital sound signals into individual digital sound signals, and a plurality of decoders for converting the individual digital sound signals into analog sound signals. A decoder unit for outputting an audio signal; And An encoder unit having a digital signal processor for converting an analog sound signal in the system into a digital signal, converting the analog or digital sound signal in the system into individual sound signals corresponding to a variety of external sound devices; Multi-type audio system of a vehicle comprising a. delete delete The method of claim 1, And the external sound signal and the internal sound signal are transmitted by using any one selected from a USB port, an optical cable, and a composite.

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