KR980007731A - Screen Skip Device and Method of MPEG 2 Video Decoder - Google Patents

Screen Skip Device and Method of MPEG 2 Video Decoder Download PDF

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Publication number
KR980007731A
KR980007731A KR1019960024109A KR19960024109A KR980007731A KR 980007731 A KR980007731 A KR 980007731A KR 1019960024109 A KR1019960024109 A KR 1019960024109A KR 19960024109 A KR19960024109 A KR 19960024109A KR 980007731 A KR980007731 A KR 980007731A
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KR
South Korea
Prior art keywords
picture
skip
video decoder
video
signal
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Application number
KR1019960024109A
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Korean (ko)
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KR100421833B1 (en
Inventor
류화영
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구자홍
엘지전자 주식회사
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Priority to KR1019960024109A priority Critical patent/KR100421833B1/en
Publication of KR980007731A publication Critical patent/KR980007731A/en
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Publication of KR100421833B1 publication Critical patent/KR100421833B1/en

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    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer

Abstract

본 발명은 MPEG2 비디오 디코더에 관한 것으로 특히, 비디오 디코더의 화면 디코딩 스킵 장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an MPEG2 video decoder, and more particularly, to a video decoder skip decoding apparatus and method.

종래기술의 비디오 디코더의 화면 스킵장치는 B픽처의 스킵만을 하므로 I나 P픽처만으로 구성되어 있는 로우 딜레이 모드(Low Delay Mode) 비트스트림에서는 스킵을 구현할 수 없는 문제점이 발생된다.Since the picture skip device of the video decoder of the related art only skips the B picture, a skip can not be implemented in a low delay mode bit stream composed only of I or P pictures.

따라서 본 발명에 따른 엠팩 비디오 디코더의 디코딩 스킵 장치 및 방법은 픽처 스킵신호가 입력되면 로우 릴레이 모드인지를 판단하는 단계와, 로우 딜레이 모드이면 I픽처 플래그 신호를 검사하여 픽처스킵명령 따라 비디오 비트스트림의 픽처를 스킵하여 디코딩하는 단계로 이루어짐을 특징으로 하여 로우 딜레이 모드 비트스트림에서도 I픽처 바로 이전의 P픽처를 스킵하여 픽처 스킵기능을 구현할 수 있는 효과가 있다.Therefore, the decoding skip apparatus and method of an MPEG video decoder according to the present invention can further include the steps of: determining whether a picture skip signal is inputted, whether the mode is a low-relay mode or not; And decoding the picture by skipping the P picture. In the low delay mode bitstream, the P picture immediately before the I picture is skipped to implement the picture skip function.

Description

엠펙2 비디오 디코더의 화면 스킵 장치 및 방법Screen Skip Device and Method of MPEG 2 Video Decoder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 종래기술에 따른 비디오 디코더의 화면 스킵방법을 보여주는 플로우챠트.FIG. 2 is a flow chart showing a method of skipping a screen of a video decoder according to the related art.

제3도는 본 발명에 따른 비디오 디코더의 화면 스킵장치의 구성을 보여주는 블록도.FIG. 3 is a block diagram showing a configuration of a picture skip device of a video decoder according to the present invention; FIG.

제4도는 본 발명에 따른 비디오 디코더의 화면 스킵방법을 보여주는 플로우챠트.FIG. 4 is a flow chart showing a method of skipping a screen of a video decoder according to the present invention;

Claims (4)

입력되는 비디오 비트스트림중 I픽처를 검출하여 I픽처 플래그 신호 및 비디오 비트 스트림을 출력하는 I픽처 검출부와 상기 I픽처 검출부에서 출력하는 비디오 비트스트림을 저장하는 비디오 비트스트림버퍼와, 상기 I픽처 검출부의 I픽처 검출신호와 픽처 스킵신호에 따라 상기 비디오 비트스트림 버퍼에서 출력하는 비디오 비트스트림의 픽쳐를 스킵하여 디코딩하는 비디오 디코더로 구성됨을 특징으로 하는 엠펙2 비디오 디코더의 화면 스킵장치.A video bitstream buffer for storing a video bitstream output from the I-picture detector, an I-picture detector for detecting an I-picture among the input video bitstream and outputting an I-picture flag signal and a video bitstream, And a video decoder for skipping and decoding a picture of a video bit stream output from the video bitstream buffer according to an I picture detection signal and a picture skip signal. 제1항에 있어서, I픽처 검출부는 입력되는 비디오 비트스트림의 각 픽처의 스타트 코드를 검출하는 픽처 스타트 코드 검출부와, 상기 픽처 스타트 코드 검출부에서 검출된 각 픽처의 타입의 I픽처이면 1, I픽처가 아니면 0으로 저장 및 출력하여 다음 디코딩할 픽처의 정보를 상기 비디오 디코더로 출력하면 I픽처 플래그 FIFO로 구성됨을 특징으로하는 엠펙2 비디오 디코더의 화면 스킵장치.The picture decoding apparatus according to claim 1, wherein the I picture detecting section comprises: a picture start code detecting section for detecting a start code of each picture of an input video bit stream; And outputs the information of the next picture to be decoded to the video decoder, the I-picture flag FIFO is formed. 픽처 스킵신호가 입력되면 로우 딜레이 모드인지를 판단하는 단계와, 로우 릴레이 모드이면 I픽처 플래그 신호를 검사하여 픽처스킵명령 따라 비디오 비트 스트림의 픽처를 스킵하여 디코딩하는 단계로 이루어짐을 특징으로 하는 엠펙2 비디오 디코더의 화면 스킵방법.Determining whether the picture is a low-delay mode when the picture skip signal is input, and skipping the picture of the video bitstream according to a picture skip command by checking the I-picture flag signal if the mode is the low-relay mode. How to skip the video decoder's screen. 제3항에 있어서, I픽처 플래그 신호를 검사하여 픽처스킵명령이 있으면 비디오 비트스트림의 픽쳐를 스킵하여 디코딩하고, 픽처스킵 명령이 없으면 I픽처를 디코딩함을 특징으로 하는 엠펙2비디오 디코더의 화면 스킵방법.The video decoder according to claim 3, wherein if the I picture flag signal is detected and there is a picture skip instruction, the picture of the video bit stream is skipped and decoded, and if there is no picture skip instruction, the I picture is decoded. Way.
KR1019960024109A 1996-06-26 1996-06-26 Picture skip apparatus for mpeg2 video decoder and method therefor KR100421833B1 (en)

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KR1019960024109A KR100421833B1 (en) 1996-06-26 1996-06-26 Picture skip apparatus for mpeg2 video decoder and method therefor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101378185B1 (en) * 2006-07-11 2014-03-26 톰슨 라이센싱 Methods and apparatus using virtual reference pictures

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JP2658832B2 (en) * 1993-11-12 1997-09-30 日本電気株式会社 Video decoding controller
KR0136461B1 (en) * 1994-09-02 1998-11-16 이헌조 B-frame processing apparatus in mpeg2
US5754241A (en) * 1994-11-18 1998-05-19 Sanyo Electric Co., Ltd Video decoder capable of controlling encoded video data
KR100376904B1 (en) * 1994-11-18 2003-06-02 산요 덴키 가부시키가이샤 Video decoding device to control encoded video data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101378185B1 (en) * 2006-07-11 2014-03-26 톰슨 라이센싱 Methods and apparatus using virtual reference pictures

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