KR20040006860A - Vehicle Audio System Processing the Digital Audio Signal out of the Vehicle - Google Patents

Vehicle Audio System Processing the Digital Audio Signal out of the Vehicle Download PDF

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Publication number
KR20040006860A
KR20040006860A KR1020020041433A KR20020041433A KR20040006860A KR 20040006860 A KR20040006860 A KR 20040006860A KR 1020020041433 A KR1020020041433 A KR 1020020041433A KR 20020041433 A KR20020041433 A KR 20020041433A KR 20040006860 A KR20040006860 A KR 20040006860A
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South Korea
Prior art keywords
audio system
digital
vehicle
external
signal
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KR1020020041433A
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Korean (ko)
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KR100476750B1 (en
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윤주훈
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기아자동차주식회사
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Priority to KR10-2002-0041433A priority Critical patent/KR100476750B1/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
    • G11B31/003—Arrangements for the associated working of recording or reproducing apparatus with related apparatus with radio receiver
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • G11B33/125—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a plurality of recording/reproducing devices, e.g. modular arrangements, arrays of disc drives
    • G11B33/126—Arrangements for providing electrical connections, e.g. connectors, cables, switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R2011/0294—Apparatus with multi-functionalities, e.g. radio and telephone

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

PURPOSE: A car audio system having external sound signal processing function is provided to extend the use of a car audio system by receiving and processing signals of a digital audio system outside a car, thereby securing the internal space of a vehicle and improving the car audio system. CONSTITUTION: A car audio system having external sound signal processing function includes an optical cable(11), an input terminal(12), a digital signal processor(13), a decoder(14) and an amplifier(15). The optical cable transmits digital signals output from various external audio system(10) at a high speed. The input terminal transmits the external digital signal to an internal processing circuit of the car audio system. The digital signal processor selects and divides the external digital signals according to frequencies. The digital signals are separated into four channels by a digital signal decoder(14) and converted into analogue signals. The analogue signals of the respective channels are amplified or controlled in timbre.

Description

외부음향신호처리 기능을 갖는 차량용 오디오 시스템{Vehicle Audio System Processing the Digital Audio Signal out of the Vehicle}Vehicle Audio System with External Sound Signal Processing {Vehicle Audio System Processing the Digital Audio Signal out of the Vehicle}

본 발명은 차량용 오디오 시스템에 관한 것으로, 상세하게는 외부의 디지털 음향 장치의 신호를 차량의 내부 오디오에서 처리할 수 있는 차량용 오디오 시스템에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle audio system, and more particularly, to a vehicle audio system capable of processing a signal of an external digital acoustic device from an internal audio of a vehicle.

일반적으로, 차량 오디오 시스템은 차량에 고정 설치되는 메인 세트, 사용자에 의해 쉽게 착탈되며 휴대 가능한 도난 방지용 프론트 세트 등으로 구성되어 라디오 방송 수신과 테이프 및 CD 등의 매체 재생이 가능하다.In general, a vehicle audio system is composed of a main set fixedly installed in a vehicle, an anti-theft front set which is easily removable by a user, and is portable, and can receive radio broadcasts and play media such as tapes and CDs.

이와같이, 차량에 장착된 오디오 시스템은 카세트 테이프 또는 CD에 저장된 오디오 데이터를 재생시키는 기능을 수행하는 데, 음악의 경우 카세트 테이프 및 CD에 저장될 수 있는 곡의 수가 제한되어 있어서 다수 곡을 청취하고자 하는 경우에는 많은 수의 카세트 테이프 및 CD가 필요하다. 또한, 카세트 테이프 및 CD를 보관하기 위한 장소도 필요하다.As such, the on-vehicle audio system performs a function of reproducing audio data stored on a cassette tape or a CD. In the case of music, the number of songs that can be stored on the cassette tape and a CD is limited, so that a plurality of songs can be listened to. In this case a large number of cassette tapes and CDs are required. There is also a need for a place for storing cassette tapes and CDs.

차량에서 사용하는 오디오 저장 매체인 카세트 테이프 및 CD는 사용기간 및 시간의 경과에 따른 저장매체의 손실 및 노화로 인하여 음질 불량이 발생하기도 하며, 항상 차량 내부의 특정한 위치에 있어야만 사용자가 이용할 수 있는 등의 불편이 있다. 또한 저장 매체 사용시 사용횟수가 증가함에 따라 카 오디오 저장매체 삽입 부위의 고장 발생율이 증가된다.Cassette tapes and CDs, which are audio storage media used in vehicles, may cause poor sound quality due to loss or aging of the storage media over the period of use and time, and they may be used only by the user at a specific location inside the vehicle. There is inconvenience. In addition, as the number of times of use of the storage medium increases, the failure rate of the car audio storage medium insertion portion increases.

본 발명은 이러한 종래 차량 오디오 시스템의 문제점을 해결하기 위하여, 차량 외부의 디지털 음향장치의 신호를 수신하여 처리함으로써, 차량 오디오 시스템의 이용범위를 확장시키는 것을 목적으로 한다. 이러한 이용범위 확장을 통해, 차량의 내부 공간 및 오디오 시스템의 효율성을 향상시키는 것을 목적으로 한다.In order to solve the problems of the conventional vehicle audio system, an object of the present invention is to expand the range of use of the vehicle audio system by receiving and processing a signal of a digital sound device outside the vehicle. Through this extension of use, it is aimed to improve the efficiency of the vehicle's internal space and audio system.

도1은 본 발명에 따른 외부 디지털 음향신호를 입력할 수 있는 차량 오디오시스템의 회로 구성도, 그리고1 is a circuit diagram of a vehicle audio system capable of inputting an external digital sound signal according to the present invention; and

도2는 본 발명에 따른 외부음향 신호처리기를 갖는 차량 오디오 시스템의 작동을 보여주는 플로우챠트이다.2 is a flowchart showing the operation of a vehicle audio system having an external acoustic signal processor according to the present invention.

- 도면의 주요부분에 대한 부호의 설명--Explanation of the symbols for the main parts of the drawings-

10: 외부 음향장치11: 광케이블10: external sound device 11: optical cable

12: 입력단자13: 디지털신호처리기12: input terminal 13: digital signal processor

14: 디코더15: 앰퍼14: decoder 15: amper

16: 스피커16: speaker

S21,S22,S23,S24,S25: 작동단계S21, S22, S23, S24, S25: Operation stage

이러한 목적을 달성하기 위하여 본 발명은, 차량에 고정 설치되어 기존의 오디오 기능을 제공하는 메인 오디오 세트에, 외부 디지털 음향장치의 출력을 입력할 수 있는 입력단자를 설치하고, 입력단자에 입력된 디지털 신호를 여러 채널로 분리하는 디지털 신호 프로세서, 분리된 각 디지털 신호를 아날로그 신호로 변환하는 디코더, 및 각 채널의 아날로그 신호를 증폭하여 스피커로 출력하는 앰퍼 등을 포함하는 외부 디지털 음향신호 처리기를 내장한다. 또한, 외부 디지털 음향신호는 광케이블을 통해 입력단자에 입력된다.In order to achieve the above object, the present invention provides an input terminal for inputting an output of an external digital audio device to a main audio set fixedly installed in a vehicle and providing an existing audio function, and the digital input to the input terminal. Built-in external digital sound signal processor including a digital signal processor that separates signals into channels, a decoder that converts each separated digital signal into an analog signal, and an amplifier that amplifies the analog signals of each channel and outputs them to a speaker. . In addition, the external digital sound signal is input to the input terminal through the optical cable.

이하, 첨부도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명에 따른 외부 디지털 음향신호를 입력할 수 있는 차량 오디오시스템의 회로 구성도이다. 도1에 도시된 바와같이, 오디오 시스템은 기존의 오디오 시스템에, 광케이블(11), 입력단자(12), 디지털신호프로세서(13), 디코더(14) 및 앰퍼(15) 등으로 구성된다.1 is a circuit diagram of a vehicle audio system capable of inputting an external digital sound signal according to the present invention. As shown in FIG. 1, the audio system is composed of an optical cable 11, an input terminal 12, a digital signal processor 13, a decoder 14, an amplifier 15, and the like, in an existing audio system.

광케이블(11)은 외부의 다양한 디지털 음향장치(10), 예를 들어 DVD, CD, MD 등으로부터 출력된 디지털 신호를 차량 내 오디오 시스템으로 고속으로 전달한다.The optical cable 11 transmits a digital signal output from various external digital sound apparatuses 10, for example, DVD, CD, MD, etc. to the in-vehicle audio system at high speed.

입력단자(12)는 광케이블(11)을 통해 전달된 외부 디지털 신호를 오디오 시스템의 내부 처리회로에 전달한다.The input terminal 12 transmits an external digital signal transmitted through the optical cable 11 to the internal processing circuit of the audio system.

전달된 외부 디지털 신호는 디지털 신호처리기(13, DSP: Digital Signal Processor)에 의해 주파수 등에 따라 선택분리된다.The transmitted external digital signal is selectively separated according to a frequency or the like by a digital signal processor (DSP).

분리된 디지털 신호는 디코더(14, Digital Signal Decorder)에 의해 4개의 채널로 분리되고, 각각 아날로그 신호로 변환되어 아날로그 신호가 출력된다. 여기서, 디코더는 상기 디코더에서 전송된 신호를 가청 범위의 아날로그 신호로 변환 출력하는 D/A 컨버터(Digital/Analog Converter)가 이용될 수 있다.The separated digital signal is separated into four channels by a decoder 14 (Digital Signal Decorder), and each is converted into an analog signal and an analog signal is output. Here, the decoder may be a digital / analog converter (D / A converter) for converting and outputting the signal transmitted from the decoder to an analog signal of the audible range.

각 채널의 아날로그 신호는 앰퍼(15)에 의해 증폭되거나 음색이 조절되어 출력된다.The analog signal of each channel is amplified by the amplifier 15 or the tone is adjusted and output.

출력된 아날로그 신호는 스피커(16)에 의해 음향으로 출력된다.The output analog signal is output as sound by the speaker 16.

이러한 순차적 기능으로 처리되는 오디오 시스템을 제어하는 마이컴이 구비된다.A microcomputer for controlling an audio system processed by such a sequential function is provided.

그 밖에, 외부로 부터 입력된 디지털 신호를 일시적으로 저장할 수 있는 메모리를 더 구비할 수 있다. 이러한 메모리는 입력단자로 입력된 디지털 신호를 저장한 후, 사용자의 별도 지시에 따라 저장된 디지털 오디오 신호를 재생한다. 여기서, 메모리에 저장되는 디지털 신호는 소정의 압축기에 의하여 압축하여 저장하는 것이 바람직하며, 이때, 압축된 디지털 오디오 신호를 해제하기 위한 해제기가 추가 구비되어야 한다.In addition, a memory for temporarily storing a digital signal input from the outside may be further provided. The memory stores the digital signal input through the input terminal and reproduces the stored digital audio signal according to a separate instruction of the user. Here, the digital signal stored in the memory is preferably compressed and stored by a predetermined compressor. In this case, a release device for releasing the compressed digital audio signal should be additionally provided.

한편, 입력된 디지털 신호의 종류, 소요시간 등에 대한 정보를 표시하는 디스플레이를 더 추가 설치할 수 있다.On the other hand, it is possible to further install a display for displaying information on the type, time required, etc. of the input digital signal.

도2는 본 발명에 따른 외부음향 신호처리기를 갖는 차량 오디오 시스템의 작동을 보여주는 플로우챠트이다. 도2에 도시된 바와같이, 외부 디지털음향신호의 입력 단계(S21), 입력된 디지털 신호를 선택하는 단계(S22), 선택된 디지털 신호를 디코딩하여 아날로그 신호로 변환하는 단계(S23), 아날로그 신호를 증폭 및 음색을 조절하는 단계(S24), 그리고 증폭된 아날로그 신호를 소리로 변환하는 단계(S25)등으로 구성된다.2 is a flowchart showing the operation of a vehicle audio system having an external acoustic signal processor according to the present invention. As shown in FIG. 2, an input step S21 of an external digital sound signal, a step S22 of selecting an input digital signal, a step of decoding a selected digital signal and conversion into an analog signal S23, and an analog signal Amplifying and adjusting the tone (S24), and converting the amplified analog signal into sound (S25).

이러한 구성 및 작용을 갖는 본 발명에 따르면, 차량 외부의 디지털 음향장치의 신호를 수신하여 처리함으로써 차량 오디오 시스템의 이용범위를 확장시킬 수 있고, 아울러 이러한 이용범위 확장을 통해, 차량의 내부 공간의 확보 및 오디오 시스템의 효율성 향상을 기할 수 있다.According to the present invention having such a configuration and operation, it is possible to extend the range of use of the vehicle audio system by receiving and processing signals from the digital sound device outside the vehicle, and also to secure the internal space of the vehicle through such an extension of the range of use. And the efficiency of the audio system can be improved.

Claims (1)

음향 신호를 처리하는 차량용 오디오 시스템에 있어서,In a vehicle audio system for processing an acoustic signal, 디지털 음향신호를 출력하는 외부음향장치;An external sound device for outputting a digital sound signal; 상기 디지털 음향신호를 전송하는 광케이블;An optical cable for transmitting the digital sound signal; 상기 광케이블이 결합되어 상기 디지털 음향신호가 입력되는 입력단자;An input terminal to which the optical cable is coupled to which the digital sound signal is input; 상기 입력단자의 외부 디지털신호를 아날로그신호로 변환하는 디코더; 및A decoder for converting an external digital signal of the input terminal into an analog signal; And 상기 아날로그신호를 증폭하는 앰퍼를 포함하는 것을 특징으로 하는 외부음향신호처리 기능을 갖는 차량용 오디오 시스템.A vehicle audio system having an external sound signal processing function comprising an amplifier for amplifying the analog signal.
KR10-2002-0041433A 2002-07-16 2002-07-16 Vehicle Audio System Processing the Digital Audio Signal out of the Vehicle KR100476750B1 (en)

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