KR20020061401A - A multi-channel audio system - Google Patents

A multi-channel audio system Download PDF

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Publication number
KR20020061401A
KR20020061401A KR1020010002457A KR20010002457A KR20020061401A KR 20020061401 A KR20020061401 A KR 20020061401A KR 1020010002457 A KR1020010002457 A KR 1020010002457A KR 20010002457 A KR20010002457 A KR 20010002457A KR 20020061401 A KR20020061401 A KR 20020061401A
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South Korea
Prior art keywords
signals
output
audio
optical disk
outputting
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KR1020010002457A
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Korean (ko)
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이수영
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엘지전자 주식회사
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Publication of KR20020061401A publication Critical patent/KR20020061401A/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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B20/00007—Time or data compression or expansion
    • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
    • G11B2020/00036—AC-3, i.e. ATSC digital audio compression standard
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10592—Audio or video recording specifically adapted for recording or reproducing multichannel signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)

Abstract

PURPOSE: A device for outputting multichannel audio is provided to reproduce multichannel audio signals played from an optical disk, and to output the reproduced audio signals through a head phone, so that a user can hear stereophonic multichannel audio. CONSTITUTION: An optical pickup(20) detects recording signals from a recording surface of an optical disk(10). An R/F(Radio Frequency) unit(30) filters and waveform-shapes the signals detected from the optical pickup, for outputting to binary signals. A drive(51) drives a spindle motor(11) rotating the optical disk. A servo(50) controls the driving of the drive from TE(Tracking Error) and FE(Focus Error) signals of the optical pickup and a rotation speed of the optical disk. A DSP(Digital Signal Processor,40) restores the binary signals to original compression data, with self-clocks that are phase-synchronized to the binary signals. An MPEG(Moving Picture Experts Group) decoder(60) decodes and outputs the compression data respectively. First to fourth D/A(Digital-to-Analog) converters(61-64) convert respective digital audio data outputted from the MPEG decoder into analog signals, for outputting. An amplifier(80) amplifies stereo R(Right) and L(Left) signals outputted from the first D/A converter, to output the amplified signals to a connected head phone. A micom(70) controls a reproduction process of the optical disk. And a mixer(65) mixes and outputs multichannel audio signals according to input signals.

Description

다채널 오디오 출력장치{A multi-channel audio system}Multi-channel audio output device {A multi-channel audio system}

본 발명은, 광디스크의 재생시 AC-3 다채널 오디오를 헤드폰을 통해 청취할 수 있도록 하는 다채널 오디오 출력장치에 관한 것이다.The present invention relates to a multi-channel audio output device that enables to listen to the AC-3 multi-channel audio through the headphone when playing the optical disk.

일반적인 DVD 플레이어의 오디오 출력은 다운믹스(Down Mix)된 2CH(R, L) 스테레오와 AC-3 6CH 출력이 있으며, 통상적으로 다운믹스된 2CH 스테레오신호가 헤드폰(Head Phone)으로 출력된다.The audio output of a typical DVD player includes a downmixed 2CH (R, L) stereo and an AC-3 6CH output. Typically, a downmixed 2CH stereo signal is output to a headphone.

도1은 일반적인 DVD 플레이어의 구성을 도시한 것으로서, 광디스크(10)의 기록면으로 부터 기록신호를 검출하기 위한 광픽업(20); 상기 광픽업(20)에서 검출되는 신호를 여파정형화시켜 이진신호로 출력하는 R/F부(30); 상기 광디스크(10)를 회전시키는 스핀들모터(11)를 구동시키는 드라이브부(50); 상기 광픽업(20)의 트래킹 에러(T.E) 및 포커스 에러(F.E)신호와 광디스크(10)의 회전속도로 부터 상기 드라이브부(50)의 구동을 제어하는 서보부(51); 상기 이진신호에 위상동기된 자체클럭으로 상기 이진신호를 원래의 압축데이터로 복원하는 디지털 재생신호처리부(40); 상기 복원되는 압축데이터를 각각 디코딩하여 출력하는 앰펙디코더(60); 상기 앰펙디코더(60)로 부터 출력되는 각각의 디지털 오디오데이터를 아날로그신호로 변환하여 출력하는 제1 내지 제4 D/A변환기(61∼64); 상기 제1 D/A변환기(61)로 부터 출력되는 스테레오 R, L신호를 증폭하여 연결된 헤드폰으로 출력하는 증폭기(80); 상기 광디스크(10)의 재생과정을 제어하는 마이컴(70)을 포함하여 구성되어 있다.1 shows a configuration of a general DVD player, comprising: an optical pickup 20 for detecting a recording signal from a recording surface of an optical disc 10; An R / F unit 30 for filtering the signal detected by the optical pickup 20 and outputting it as a binary signal; A drive unit 50 for driving the spindle motor 11 for rotating the optical disc 10; A servo unit 51 for controlling the driving of the drive unit 50 from the tracking error (T.E) and focus error (F.E) signals of the optical pickup 20 and the rotational speed of the optical disc 10; A digital reproduction signal processing unit (40) for restoring the binary signal to the original compressed data with its clock synchronized to the binary signal; An amplifier decoder 60 for decoding and outputting the decompressed compressed data, respectively; First to fourth D / A converters 61 to 64 for converting each digital audio data output from the amplifier decoder 60 into an analog signal and outputting the analog signal; An amplifier (80) for amplifying stereo R and L signals output from the first D / A converter (61) and outputting the amplified headphones; It comprises a microcomputer 70 for controlling the playback process of the optical disk 10.

상기와 같이 구성되는 DVD 플레이어에 있어서는, 먼저 사용자의 재생요청이 있으면 상기 마이컴(70)은 삽입안착된 상기 광디스크(10)의 적정 재생변속에 해당하는 구동전압을 상기 서보부(51)와 드라이브부(50)를 통해 상기 스핀들모터(11)에 인가함으로써, 상기 광디스크(10)를 회전구동시키고, 상기 광픽업(20)을 제어하여 광디스크(10) 상의 기록신호를 독출하도록 한다. 상기 회전구동되는 광디스크(10)로 부터 독출재생되는 고주파 재생신호는 상기 R/F부(30)에서 여파정형화된 뒤, 상기 디지털 재생신호처리부(40)에서 원래의 디지털데이터로 복원되고, 다시 상기 앰펙디코더(60)에 인가되어 디코딩된다.In the DVD player configured as described above, first, when the user requests a playback, the microcomputer 70 outputs a driving voltage corresponding to an appropriate reproduction shift of the inserted optical disc 10. By applying to the spindle motor 11 through 50, the optical disk 10 is driven to rotate, and the optical pickup 20 is controlled to read a recording signal on the optical disk 10. The high frequency reproduction signal read out and reproduced from the rotationally driven optical disc 10 is filtered by the R / F unit 30, and then restored to the original digital data by the digital reproduction signal processing unit 40, and again. It is applied to the amplifier decoder 60 and decoded.

상기 앰펙디코더(60)는 상기 디코딩된 각각의 오디오데이터를 해당 D/A변환기(61∼64)로 출력하는데, 즉 다운믹스된 2CH(R, L) 스테레오 오디오데이터는 제1 D/A변환기(61)로, AC-3 6CH 오디오데이터 중 Front R, L데이터는 제2 D/A변환기(62)로, Rear R, L데이터는 제3 D/A변환기(63)로, 그리고 Centor데이터와, Woofer데이터는 제4 D/A변환기(64)로 각각 출력한다.The amplifier decoder 60 outputs the decoded audio data to the corresponding D / A converters 61 to 64, that is, the downmixed 2CH (R, L) stereo audio data is output to the first D / A converter ( 61) Front R and L data of the AC-3 6CH audio data to the second D / A converter 62, Rear R and L data to the third D / A converter 63, and Centor data, Woofer data are output to the fourth D / A converter 64, respectively.

이에 따라 상기 제1 D/A변환기(61)는 입력되는 다운믹스된 디지털 오디오데이터를 아날로그 R, L 오디오신호로 변환하여 라인출력하고, 동시에 이 신호는 상기 증폭기(80)에서 증폭된 뒤 헤드폰(H/P) 잭(Jack)으로 전송되어, 사용자가 헤드폰 잭에 헤드폰을 연결하여 다운믹스된 스테레오 오디오를 청취할 수 있게 된다.Accordingly, the first D / A converter 61 converts the input downmixed digital audio data into an analog R and L audio signal and outputs the line, and at the same time, the signal is amplified by the amplifier 80 and then the headphone ( H / P) jack, allowing the user to connect headphones to the headphone jack to listen to downmixed stereo audio.

또한, Front R, L데이터는 제2 D/A변환기(62)에서 아날로그신호로 변환되어연결된 FR, FL잭으로 출력되고, Rear R, L데이터는 제3 D/A변환기(63)에서 아날로그신호로 변환되어 연결된 RR, RL잭으로 출력되고, 그리고 Centor데이터와, Woofer데이터는 제4 D/A변환기(64)에서 아날로그신호로 변환되어 Centor, Woofer잭으로 출력되어 사용자가 청취할 수 있게 된다.In addition, the front R and L data are converted into analog signals by the second D / A converter 62 and output to the connected FR and FL jacks, and the rear R and L data are analog signals by the third D / A converter 63. Is converted into the connected RR and RL jacks, and the Centor data and the Woofer data are converted into analog signals by the fourth D / A converter 64 and output to the Centor and Woofer jacks so that the user can listen.

그러나, 종래의 DVD 플레이어에서는 AC-3 6CH 오디오를 듣기 위해서 6개의 별도의 메인증폭기를 구비하여 FR, FL, RR, RL, Centor, Woofer잭과 각각 연결하여야 하고, 또한 스피커를 6개의 메인증폭기와 각각 연결하여야 하므로 번거로우며, 이로 인해 비용이 증가하는 문제점이 있었다.However, in the conventional DVD player, in order to hear AC-3 6CH audio, six separate main amplifiers must be provided and connected to each of the FR, FL, RR, RL, Centor, and Woofer jacks. It is cumbersome because they have to be connected to each other, resulting in an increase in cost.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 창작된 것으로서, 사용자가 헤드폰을 통해 입체감 있는 AC-3 다채널 오디오를 청취할 수 있도록 하는 다채널 오디오 출력장치를 제공하는 데 그 목적이 있는 것이다.Accordingly, an object of the present invention is to provide a multi-channel audio output device that is designed to solve the above problems and enables a user to listen to a three-dimensional AC-3 multi-channel audio through a headphone. .

도1은 일반적인 DVD 플레이어의 구성을 도시한 것이고,1 shows a configuration of a general DVD player,

도2는 본 발명에 따른 다채널 오디오 출력장치가 구성된 DVD 플레이어의 구성을 도시한 것이다.2 shows a configuration of a DVD player in which a multichannel audio output apparatus according to the present invention is constructed.

※도면의 주요부분에 대한 부호의 설명※ Explanation of symbols for main parts of drawing

10 : 광디스크(DVD)11 : 스핀들모터10: optical disc (DVD) 11: spindle motor

20 : 광픽업30 : R/F부20: Optical pickup 30: R / F part

40 : 디지털 재생신호처리부50 : 드라이브부40: digital reproduction signal processing unit 50: drive unit

51 : 서보부60 : 앰펙디코더51: servo unit 60: amp decoder

61∼64 : D/A변환기65 : 혼합기61 to 64: D / A converter 65: Mixer

70 : 마이컴80 : 증폭기70: micom 80: amplifier

상기와 같은 목적을 달성하기 위한 본 발명에 따른 다채널 오디오 출력장치는, 적어도 3개이상의 다채널 오디오가 기록되어 있는 광디스크로 부터 독출재생되는 오디오데이터를 디코딩하여, 오디오데이터의 종류에 따라 분리출력하는 디코딩수단; 상기 분리출력되는 각각의 오디오데이터를 아날로그 오디오신호로 변환출력하는 다수의 아날로그 변환수단; 및 상기 다수의 아날로그 변환수단으로 부터 각각 변환출력되는 다채널 오디오신호를 합성하여 헤드폰 등의 장치로 출력되도록 하는 합성수단을 포함하여 구성되는 것에 그 특징이 있는 것이다.A multichannel audio output apparatus according to the present invention for achieving the above object, by decoding the audio data to be read and reproduced from the optical disk on which at least three or more multi-channel audio is recorded, separate output according to the type of audio data Decoding means; A plurality of analog conversion means for converting and outputting each of the separated audio data into an analog audio signal; And synthesizing means for synthesizing the multi-channel audio signals converted and output from the plurality of analog conversion means, respectively, and outputting them to a device such as a headphone.

이하, 본 발명에 따른 다채널 오디오 출력장치의 일 실시예에 대해 첨부된 도면에 의거하여 상세히 설명한다.Hereinafter, an embodiment of a multi-channel audio output apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 따른 다채널 오디오 출력장치가 구현된 DVD 플레이어의 구성을 도시한 것으로서, 도1의 구성에, 입력신호에 따라 입력되는 다채널 오디오신호를 합성출력하는 혼합기(Mixer)(65)를 더 포함하여 구성되어 있다.FIG. 2 illustrates a configuration of a DVD player in which a multi-channel audio output apparatus is implemented according to the present invention. In the configuration of FIG. 1, a mixer 65 synthesizes and outputs a multi-channel audio signal input according to an input signal. ) Is further included.

상기와 같이 구성된 광디스크(10) 구동장치에서는, 먼저 사용자의 요청에 따라 삽입장착된 광디스크(10)의 재생이 이루어지게 되는데, 이때 전술하나 바와 같이 상기 앰펙디코더(60)는 입력되는 오디오데이터를 디코딩하여 해당 D/A변환기(61∼64)로 각각 분리출력하게 되는데, 즉 다운믹스된 2CH 스테레오 오디오데이터는 제1 D/A변환기(61)로, Front R, L데이터는 제2 D/A변환기(62)로, Rear R, L데이터는 제3 D/A변환기(63)로, 그리고 Centor데이터와, Woofer데이터는 제4 D/A변환기(64)로 각각 분리하여 출력한다.In the optical disk 10 driving apparatus configured as described above, first, the optical disk 10 inserted and mounted is reproduced according to a user's request. As described above, the amplifier decoder 60 decodes the input audio data. The D / A converters 61 to 64 respectively output separate outputs, that is, the downmixed 2CH stereo audio data is the first D / A converter 61, and the front R and L data are the second D / A converters. At 62, rear R and L data are separately output to the third D / A converter 63, and Centor data and Woofer data are respectively output to the fourth D / A converter 64.

상기 각 D/A변환기(61∼64)는 입력되는 디지털 오디오데이터를 아날로그 오디오신호로 변환하여 라인 출력하는데, 이때 상기 제1 D/A변환기(61)를 제외한 D/A변환기(62∼64)로 부터 출력되는 각각의 오디오신호는 상기 혼합기(65)에도 입력된다. 이와 함께 상기 제1 D/A변환기(61)를 제외한 D/A변환기(62∼64)는 상기 앰펙디코더(60)로 부터의 오디오데이터 입력여부에 따른 신호(①, ②, ③)를 상기 혼합기(65)로 출력하게 되는데, 즉 상기 앰펙디코더(60)로 부터 입력되는 오디오데이터가 없는 경우에는 "1"을, 입력되는 오디오데이터가 있는 경우에는 "0"을 상기 혼합기(65)로 출력한다.Each of the D / A converters 61 to 64 converts input digital audio data into an analog audio signal and outputs the line. In this case, the D / A converters 62 to 64 except for the first D / A converter 61 are output. The respective audio signals output from are also input to the mixer 65. In addition, the D / A converters 62 to 64 except for the first D / A converter 61 may output signals (①, ②, ③) according to whether audio data is input from the amplifier decoder 60 to the mixer. Output to the mixer 65, i.e., if there is no audio data input from the amplifier decoder 60, " 0 " .

이에 따라 상기 혼합기(65)는 상기 D/A변환기(62∼64)로 부터 입력되는 ①∼③의 신호에 근거하여 상기 D/A변환기(62∼64)로 부터 입력되는 오디오신호를 선택적으로 합성출력하게 되는데, 예를 들어 상기 D/A변환기(62∼64)로 부터 입력되는 ①∼③의 신호 중, ①과 ②의 신호만이 "0"이고, ③의 신호는 "1"인 경우에는 상기 혼합기(65)는 상기 제2 D/A변환기(62)와 제3 D/A변환기(63)로 부터 출력되는 오디오신호, 즉 Front R, L신호와 Rear R, L신호를 합성하여 출력하고, 이와 같이 합성출력되는 오디오신호는 상기 증폭기(80)에서 증폭된 뒤 헤드폰(H/P) 잭(Jack)으로 전송되어, 사용자가 헤드폰 잭에 헤드폰을 연결하여 다채널의 오디오를 청취할 수 있게 된다.Accordingly, the mixer 65 selectively synthesizes an audio signal input from the D / A converters 62 to 64 based on the signals of 1 to 3 inputted from the D / A converters 62 to 64. For example, when only signals of ① and ② are "0" and signals of ③ are "1" among the signals of ① to ③ input from the D / A converters 62 to 64, for example, The mixer 65 synthesizes an audio signal output from the second D / A converter 62 and the third D / A converter 63, that is, a front R, L signal and a rear R, L signal. The synthesized audio signal is amplified by the amplifier 80 and then transmitted to the headphone (H / P) jack so that the user can listen to the multi-channel audio by connecting the headphone to the headphone jack. do.

상기와 같이 구성되는 본 발명에 따른 다채널 오디오 출력장치는, 광디스크로 부터 재생되는 다채널의 오디오신호를 재생하여 헤드폰을 통해 출력함으로써, 사용자가 입체감 있는 다채널의 오디오를 청취할 수 있게 되는 유용한 발명인 것이다.The multi-channel audio output apparatus according to the present invention configured as described above is useful for enabling a user to listen to multi-channel audio having a three-dimensional effect by reproducing the multi-channel audio signal reproduced from the optical disc and outputting it through headphones. It is an invention.

Claims (2)

광디스크 재생방법에 있어서,In the optical disc playback method, 적어도 3개이상의 다채널 오디오가 기록되어 있는 광디스크로 부터 독출재생되는 오디오데이터를 디코딩하여, 오디오데이터의 종류에 따라 분리출력하는 디코딩수단;Decoding means for decoding audio data read and reproduced from an optical disc on which at least three or more multichannel audios are recorded, and separately outputting the audio data according to the type of audio data; 상기 분리출력되는 각각의 오디오데이터를 아날로그 오디오신호로 변환출력하는 다수의 아날로그 변환수단; 및A plurality of analog conversion means for converting and outputting each of the separated audio data into an analog audio signal; And 상기 다수의 아날로그 변환수단으로 부터 각각 변환출력되는 다채널 오디오신호를 합성하여 헤드폰 등의 장치로 출력되도록 하는 합성수단을 포함하여 구성되는 다채널 오디오 출력장치.And synthesizing means for synthesizing the multi-channel audio signals converted and output from the plurality of analog conversion means, respectively, and outputting them to a device such as a headphone. 제 1항에 있어서,The method of claim 1, 상기 다수의 아날로그 변환수단은, 상기 디코딩수단으로 부터 해당 종류의 오디오데이터 입력여부에 따른 신호를 출력하고, 상기 합성수단은 상기 다수의 아날로그 변환수단으로 부터 각각 출력되는 신호로 부터 오디오데이터 입력여부를 확인하여, 상기 다수의 아날로그 변환수단으로 부터 각각 변환출력되는 다채널 오디오신호를 선택적으로 합성출력하는 것을 특징으로 하는 다채널 오디오 출력장치.The plurality of analog converting means outputs a signal according to whether audio data of a corresponding type is input from the decoding means, and the synthesizing means outputs audio data from signals respectively output from the plurality of analog converting means. The multi-channel audio output device characterized in that for selectively synthesizing the multi-channel audio signal which is respectively converted and output from the plurality of analog conversion means.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004059643A1 (en) * 2002-12-28 2004-07-15 Samsung Electronics Co., Ltd. Method and apparatus for mixing audio stream and information storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004059643A1 (en) * 2002-12-28 2004-07-15 Samsung Electronics Co., Ltd. Method and apparatus for mixing audio stream and information storage medium

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