KR960043830A - MPEG and AC-3 Combined Digital Audio Signal Decoder - Google Patents

MPEG and AC-3 Combined Digital Audio Signal Decoder Download PDF

Info

Publication number
KR960043830A
KR960043830A KR1019950012799A KR19950012799A KR960043830A KR 960043830 A KR960043830 A KR 960043830A KR 1019950012799 A KR1019950012799 A KR 1019950012799A KR 19950012799 A KR19950012799 A KR 19950012799A KR 960043830 A KR960043830 A KR 960043830A
Authority
KR
South Korea
Prior art keywords
audio
decoder
mpeg
bitstream
bit data
Prior art date
Application number
KR1019950012799A
Other languages
Korean (ko)
Other versions
KR0144780B1 (en
Inventor
이상근
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950012799A priority Critical patent/KR0144780B1/en
Publication of KR960043830A publication Critical patent/KR960043830A/en
Application granted granted Critical
Publication of KR0144780B1 publication Critical patent/KR0144780B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/439—Processing of audio elementary streams
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/60—General implementation details not specific to a particular type of compression
    • H03M7/6005—Decoder aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4343—Extraction or processing of packetized elementary streams [PES]

Abstract

본 발명은 MPEG과 AC-3의 압축알고리즘에 의해 각각 부호화되고 압축된 오디오 비트스트림을 호환있게 복호화할 수 있도록 한 MPEG과 AC-3 겸용 디지탈 오디오신호의 복호화장치에 관한 것이다. 본 발명의 디지탈 오디오신호의 복호화장치는부호화기로부터 부호화된 오디오 비트스트림에 사용한 오디오 압축방식을 나타내는 비트데이타를 부가하여 전송시 이를수신하여 부가된 오디오 압축방식의 비트데이타를 디코딩하는 디코더와, MPEG의 압축알고리즘에 의해 압축부호화된 오디오 비트스트림을 디코딩하여 원래 오디오신호로 복원하는 MPEG 오디오 디코더와,AC-3의 압축알고리즘에 의해 압축부호화된 오디오 비트스트림을 디코딩하여 원래 오디오신호로 복원하는 AC-3오디오디코더, 및 디코딩된 오디오 압축방식의 비트데이타에 따라 MPEG 오디오디코더와 AC-3오디오디코더중 해당하는 하나의 오디오디코더만이 동작가능한 인에이블상태가 되도록 제어하는 제어부로 구성된다.The present invention relates to an apparatus for decoding a digital audio signal for both MPEG and AC-3, which enables to decode compatible audio bitstreams encoded and compressed by MPEG and AC-3 compression algorithms, respectively. An apparatus for decoding a digital audio signal according to the present invention includes a decoder for decoding bit data of an audio compression method added by receiving bit data indicating an audio compression method used in an encoded audio bit stream from an encoder and receiving the same during transmission. MPEG audio decoder that decodes the audio bitstream compressed by the compression algorithm and restores it to the original audio signal, and AC-3 decodes the audio bitstream compressed by the compression algorithm of AC-3 and restores it to the original audio signal. An audio decoder and a control unit for controlling only one audio decoder of the MPEG audio decoder and the AC-3 audio decoder to be in an operable enabled state according to the decoded bit data of the audio compression scheme.

Description

MPEG과 AC-3겸용 디지탈 오디신호의 복호화장치MPEG and AC-3 Combined Digital Audio Signal Decoder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명의 바람직한 실시예에 따른 MPEG과 AC-3겸용 디지털 오디오신호의 복호화장치를 나타내는 구성도.3 is a block diagram showing an apparatus for decoding an MPEG-3 AC-3 digital audio signal according to a preferred embodiment of the present invention.

Claims (3)

MPEG 내지 AC-3의 압축알고리즘중 하나의 의해 압축 부호화된 오디오 비트스트림과 비디오 비스트스트림을패킷화하고 다중화하여 트랜스포트 스트림(TS)으로 전송되는 비트스트림을 복호화하기 위한 장치에 있어서, 오디오 비트스트림에 사용된 압축방식을 나타내는 비트데이타가 부가되어 전송되는 TS 비트스트림을 수신하며, 수신한 TS 비트스트림을 디코딩하여 비디오와 오디오 비트스트림으로 분리하여 출력하고, 부가된 비트데이타를 제어부로 출력하는 TS 디코더; 상기 TS 디코더에서 출력된 비디오 비트스트림을 디코딩하여 원래 비디오신호로 복원하는 비디오디코더; 상기 TS 디코더에서 출력된 비트데이타에 의해 MPEG 오디오 디코더와 AC-3 오디오디코더중 하나를 동작가능한 인에이블상태로 만드는 제어부; 상기 제어부의 제어에 의해 인에이블상태가 되면 상기 TS 디코더에서 출력된 오디오 비트스트림을 디코딩하여원래 오디오신호로 복원하는 MPEG 오디오디코더; 및 상기 제어부의 제어에 의해 인에이블상태가 되면 상기 TS 디코더에서출력된 오디오 비트스트림을 디코딩하여 원래 오디오신호로 복원하는 AC-3오디오디코더를 포함하는 MPEG과 AC-3겸용 디지탈 오디오신호의 복호화 장치.An apparatus for packetizing and multiplexing an audio bitstream and a video bitstream compression-coded by one of the compression algorithms of MPEG to AC-3, and decoding the bitstream transmitted in a transport stream (TS). Receives the TS bitstream transmitted by adding bit data indicating the compression method used in the decoding, decodes the received TS bitstream into video and audio bitstreams and outputs them, and outputs the added bit data to the controller Decoder; A video decoder which decodes the video bitstream output from the TS decoder and restores the original video signal; A controller for making one of an MPEG audio decoder and an AC-3 audio decoder in an enabled state by bit data output from the TS decoder; An MPEG audio decoder which decodes the audio bitstream output from the TS decoder and restores the original audio signal when it is enabled under the control of the controller; And an AC-3 audio decoder which decodes the audio bitstream output from the TS decoder and restores the original audio signal when it is enabled under the control of the controller. . 제1항에 있어서, 상기 제어부는 상기 TS 디코더에서 출력된 비트데이타에 의해 오디오비트스트림에 사용된 압축방식이 MPEG로 인식되면 상기 MPEG 오디오디코더를 인에이블시키고 상기 AC-3 오디오디코더를 디스에이블시키는것을 특징으로 하는 MPEG과 AC-3겸용 디지탈오디오신호의 복호화장치.The method of claim 1, wherein the controller is further configured to enable the MPEG audio decoder and disable the AC-3 audio decoder when the compression method used for the audio bitstream is MPEG based on the bit data output from the TS decoder. MPEG- and AC-3 dual-purpose digital audio signal decoding apparatus characterized in that. 제1항에 있어서, 상기 제어부는 상기 TS 디코더에서 출력된 비트데이타에 의해 오디오 비트스트림에 사용된 압축방식이 AC-3으로 인식되면 상기 AC-3 오디오디코더를 인에이블시키고 상기 MPEG 오디오디코더를 디스에이블시키는것을 특징으로 하는 MPEG과 AC-3 겸용 디지탈 오디오신호의 복호화장치.The method of claim 1, wherein the controller enables the AC-3 audio decoder and decodes the MPEG audio decoder when the compression scheme used for the audio bitstream is AC-3 by the bit data output from the TS decoder. A decoding apparatus for a digital audio signal for both MPEG and AC-3, characterized by enabling the signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950012799A 1995-05-22 1995-05-22 Digital audio signal decoding apparatus KR0144780B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950012799A KR0144780B1 (en) 1995-05-22 1995-05-22 Digital audio signal decoding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950012799A KR0144780B1 (en) 1995-05-22 1995-05-22 Digital audio signal decoding apparatus

Publications (2)

Publication Number Publication Date
KR960043830A true KR960043830A (en) 1996-12-23
KR0144780B1 KR0144780B1 (en) 1998-07-15

Family

ID=19415078

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950012799A KR0144780B1 (en) 1995-05-22 1995-05-22 Digital audio signal decoding apparatus

Country Status (1)

Country Link
KR (1) KR0144780B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100284402B1 (en) * 1997-12-26 2001-03-02 김영환 Arithmetic Unit of AC-3 Audio Decoder
KR100300844B1 (en) * 1997-12-26 2001-09-03 박종섭 Imdct circuit of ac-3 decoder
KR100466588B1 (en) * 2001-12-21 2005-01-24 한국전자통신연구원 Decoding Apparatus and Method by Digital Audio Encoding Type Detection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100608056B1 (en) 2004-06-05 2006-08-02 삼성전자주식회사 Reproducing apparatus of multimedia contents, reproducing method, creating apparatus, creating method, and storage medium thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100284402B1 (en) * 1997-12-26 2001-03-02 김영환 Arithmetic Unit of AC-3 Audio Decoder
KR100300844B1 (en) * 1997-12-26 2001-09-03 박종섭 Imdct circuit of ac-3 decoder
KR100466588B1 (en) * 2001-12-21 2005-01-24 한국전자통신연구원 Decoding Apparatus and Method by Digital Audio Encoding Type Detection

Also Published As

Publication number Publication date
KR0144780B1 (en) 1998-07-15

Similar Documents

Publication Publication Date Title
NO981532D0 (en) Method and apparatus for encoding audio signals
AU5689896A (en) Video data encoder and decoder
WO2004086631A3 (en) Method, apparatus and system for encoding and decoding side information for multimedia transmission
AU2003276300A1 (en) Picture buffering for prediction references and display
CA2409499A1 (en) Video coding using the sequence numbers of reference pictures for error correction
KR970050172A (en) Digital signal processor, processing method, digital signal recording / reproducing apparatus and digital signal reproducing method
KR930022876A (en) Compression encoding and decoding device of video signal
MY137090A (en) Picture decoding method
AU2178399A (en) Video processing system also compressing coding decision data
WO2002025953A3 (en) Video and audio transcoder
PL376307A1 (en) Embedded data signaling
CA2428477A1 (en) Method and device for the generation of a scalable data stream and method and device for decoding a scalable data stream
WO2003026312A3 (en) Video coding and decoding method, and corresponding signal
KR960043830A (en) MPEG and AC-3 Combined Digital Audio Signal Decoder
CN102918589B (en) The audio or video signal of decoding of the watermark derived from the audio or video signal of the watermark with low rate encoding and decoding is provided
KR100466588B1 (en) Decoding Apparatus and Method by Digital Audio Encoding Type Detection
TW200611575A (en) Digital audio/video playback system capable of controlling audio and video playback speed
TW200625954A (en) Video playback apparatus and video playback method
US20010039495A1 (en) Linking internet documents with compressed audio files
JP2935213B2 (en) Audio information transmission method
KR970011860B1 (en) Digital terminal for adaptively processing variable coding algorithm
KR970060973A (en) Digital stereoscopic image coding / decoding device
JPH0758943B2 (en) Audio information transmission method
KR970032135A (en) Digital audio decoder
JPH07143076A (en) Coding device, decoding device and coding/decoding device

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20080328

Year of fee payment: 11

LAPS Lapse due to unpaid annual fee