KR950024583A - Video and voice decoding method and system - Google Patents

Video and voice decoding method and system Download PDF

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Publication number
KR950024583A
KR950024583A KR1019940000739A KR19940000739A KR950024583A KR 950024583 A KR950024583 A KR 950024583A KR 1019940000739 A KR1019940000739 A KR 1019940000739A KR 19940000739 A KR19940000739 A KR 19940000739A KR 950024583 A KR950024583 A KR 950024583A
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South Korea
Prior art keywords
video
decoding
voice
audio
control means
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KR1019940000739A
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Korean (ko)
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KR0134490B1 (en
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김근환
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배순훈
대우전자 주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)

Abstract

본 발명은 동영상 및 음성 복호방법 및 시스템에 관한 것이다. 이를 위하여 종래에 부호화되고 다중화된 비트스트림을 역다중화하는 디멀티플렉서로서 마이콤을 사용하고, 복호되고 디스플레이되는 동영상과 음성 데이타의 동기를 맞추기 위하여 카운터가 사용된다. 따라서 복호되어 디스플레이되는 동영상 및 음성데이타의 동기를 일치시킬 수 있는 잇점이 있다.The present invention relates to a video and audio decoding method and system. To this end, a microcomputer is used as a demultiplexer for demultiplexing a conventionally encoded and multiplexed bitstream, and a counter is used to synchronize the decoded and displayed video and audio data. Therefore, there is an advantage in that the synchronization of the decoded and displayed video and audio data can be matched.

Description

동영상 및 음성 복호방법 및 시스템Video and voice decoding method and system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 일반적인 MPEC 동영상 및 음성 복호시스템을 나타낸 블럭도.1 is a block diagram showing a general MPEC video and audio decoding system.

제2A내지 2C도는 동영상과 음성이 디스플레이되는 타이밍도.2A to 2C are timing diagrams in which video and audio are displayed.

제3도는 본 발명에 의한 동영상 및 음성 복호시스템의 일실시예에 따른 블럭도.3 is a block diagram according to an embodiment of a video and audio decoding system according to the present invention.

Claims (6)

부호화되고 다중화되어 인가되는 비트스트림을 분석하여 동영상 압축스트림과 음성압축스트림으로 분리한 후 복호하기 의한 동영상 및 음성 복호방법에 있어서, 복호되어 디스플레이되는 동영상 및 음성 데이타의 동기를 맞추기 위하여 상기 동영상 압축스트림을 복호하기 시작한 후 소정의 지연시간이 경과한 후에 상기 음성압축 스트림을 복호함을 특징으로 하는 동영상 및 음성 복호 방법.In a video and audio decoding method by analyzing a coded, multiplexed and applied bitstream and separating the video stream into a video compressed stream and a voice compressed stream, the video compressed stream is synchronized to synchronize the displayed video and audio data. And decoding the voice compressed stream after a predetermined delay time has elapsed after the decoding starts. 제1항에 있어서, 동영상 복호기의 초기지연시간을 TdV, 동영상 프레임의 간격을 Tfv, 음성복호기의 초기지연시간을 Tda라고 할 경우 상기 지연시간은, (Tdv+2tfv-Tda)임을 특징으로 하는 동영상 및 음성 복호방법.The video delay method of claim 1, wherein the initial delay time of the video decoder is TdV, the video frame interval is Tfv, and the voice decoder is Tda. And voice decoding method. 부호화되고 다중화되어 인가되는 비트스트립을 분석하여 동영상 압축스트링과 지연 분리하고, 상기 동영상 압축스트림과 음성압측스트림의 헤더정보를 이용하여 전송된 프레임의 수를 분석하고, 상기 복호되어 디스플레이되는 동영상과 음성의 동기를 맞추기 위한 지연시간값을 공급하기 위한 콘트롤 수단; 상기 큰트롤 수단에서 분리된 음성 압축스트림을 일시적으로 저장하고, 현재 상기 콘트롤 수단에서 파악된 디스플레이 되는 동영상 및 음성 프레임의 수를 저장하기 위한 제1저장수단과; 상기 콘트롤 수단에서 공급되는 지연시간값을 카운트한 후, 상기 콘트롤 수단이 상기 제1저장수단에 저장되어 있는 음성압축스트림을 독출하도록 인터럽트신호를 상기 콘트롤 수단에 인가하기 위한 카운팅수단과; 상기 콘트롤 수단에서 출력되는 동영상압축스트림을 버퍼링한 후 복호하기 위한 동영상 복호수단과; 상기 동영상 복호수단에서 복호된 영상 프레임을 저장하기 위한 제2저장수단과; 상기 콘트롤 수단에서 출력되는 음성압축스트림을 버퍼링한 후 복호하기 위한 음성 복호 수단과; 및 상기 음성 복호 수단에서 복호된 음성 프레인을 저장하기 위한 제3저장수단을 포함함을 특징으로 하는 동영상 및 음성 복호시스템.Decode and decode the video compression string and delay by analyzing the bit strips encoded and multiplexed, analyze the number of transmitted frames using the header information of the video compressed stream and the audio compression stream, and analyze the decoded video and audio. Control means for supplying a delay time value for synchronizing with the control unit; First storage means for temporarily storing the compressed voice stream separated by the large control means, and storing the number of displayed moving picture and voice frames currently recognized by the control means; Counting means for applying an interrupt signal to said control means so that after said counting a delay time value supplied from said control means, said control means reads a voice compressed stream stored in said first storage means; Video decoding means for buffering and decoding the video compressed stream output from the control means; Second storage means for storing the video frame decoded by the video decoding means; Audio decoding means for buffering and decoding the audio compressed stream output from the control means; And third storage means for storing the voice plane decoded by the voice decoding means. 제3항에 있어서, 상기 제1저장수단은, 음성압축스트림을 저장하기 위한 메모리와, 동영상 프레임 카운터와, 음성 프레임 카운터로 구성됨을 특징으로 하는 동영상 및 음성 복호시스템.The video and audio decoding system of claim 3, wherein the first storage means comprises a memory for storing a voice compressed stream, a video frame counter, and a voice frame counter. 제3항에 있어서, 상기 콘트롤 수단에서 공급되는 시간지연값은, 상기 동영상복호수단의 초기지연시간을 Tdv, 동영상 프레임의 간격을 Tfv, 상기 음성 복호 수단의 초기지연시간을 Tda라고 할 경우, (Tdv+2tfv-Tda)임을 특징으로 하는 동영상 및 음성 복호시스템.The method of claim 3, wherein the time delay value supplied from the control means means that the initial delay time of the video decoding means is Tdv, the interval of the video frame is Tfv, and the initial delay time of the audio decoding means is Tda. Tdv + 2tfv-Tda) video and audio decoding system characterized in that. 제5항에 있어서, 상기 음성 복호수단은, 동영상복호 수단이 기동하기 시작하여 상기 (Tdv+2tfv-Tda) 만큼의 시간이 지난 후에 동작함을 특징으로 하는 동영상 및 음성 복호시스템.6. The video and audio decoding system according to claim 5, wherein the audio decoding means operates after the video decoding means starts and the time (Tdv + 2tfv-Tda) has elapsed. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940000739A 1994-01-18 1994-01-18 Apparatus for controlling the synchronization of video and KR0134490B1 (en)

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KR1019940000739A KR0134490B1 (en) 1994-01-18 1994-01-18 Apparatus for controlling the synchronization of video and

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KR0134490B1 KR0134490B1 (en) 1998-04-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100407331B1 (en) * 2001-09-17 2003-11-28 삼성전자주식회사 Method for playing moving image data in mobile communication terminal equipment
KR100434257B1 (en) * 1996-12-31 2004-10-06 엘지전자 주식회사 Simple moving image display device, specially correlated to miniaturizing the size of an advertising display device, and reducing the price of a system by using an mpeg technology

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100368759B1 (en) * 2000-07-20 2003-01-24 삼성탈레스 주식회사 Bidirectional transmitting method of mpec moving picture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100434257B1 (en) * 1996-12-31 2004-10-06 엘지전자 주식회사 Simple moving image display device, specially correlated to miniaturizing the size of an advertising display device, and reducing the price of a system by using an mpeg technology
KR100407331B1 (en) * 2001-09-17 2003-11-28 삼성전자주식회사 Method for playing moving image data in mobile communication terminal equipment

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KR0134490B1 (en) 1998-04-23

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