KR950026270A - Picture start position data coding method and device - Google Patents

Picture start position data coding method and device Download PDF

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KR950026270A
KR950026270A KR1019940003282A KR19940003282A KR950026270A KR 950026270 A KR950026270 A KR 950026270A KR 1019940003282 A KR1019940003282 A KR 1019940003282A KR 19940003282 A KR19940003282 A KR 19940003282A KR 950026270 A KR950026270 A KR 950026270A
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picture
position data
data
start position
coding
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KR1019940003282A
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Korean (ko)
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KR0123092B1 (en
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송민진
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배순훈
대우전자 주식회사
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    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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
    • H04N19/177—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 a group of pictures [GOP]
    • 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
    • H04N19/10—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
    • H04N19/1887—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 a variable length codeword
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]

Abstract

본 픽쳐 시작위치데이터 코딩방법 및 장치는 MPEG I 비트 스트림내의 확장영역 또는 유저영역에 현 픽쳐와 이전 픽쳐간의 상대적인 위치데이터를 사용하여 각 피쳐의 위치데이터를 코드화함으로써, 특수 재생모드 수행시 충돌없이 디코딩이 가능하게 하기 위한 것이다. 이에 따라 본 발명의 방법은 가변장부호화되어 인가되는 코드데이터가 확장영역의 시작 어드렛코드인 경우에 코딩하고 ; 동일한 GOP 층에서 현재 인가되는 픽쳐가 있는 경우 현재 인가되는 픽쳐의 타입을 결정하고 ; 현재 픽쳐시작위치와 이전 픽쳐의 시작위치간의 상대적인 위치를 검출하고 ; 현재 인가되는 픽쳐가 없는 경우, 데이터부분이 끝났음을 알리는 엔드코드를 할당하는 과정들로 이루어진다.This picture start position data coding method and apparatus encodes the position data of each feature using relative position data between the current picture and the previous picture in the extended area or the user area in the MPEG I bit stream, thereby decoding without collision when performing a special playback mode. Is to make this possible. Accordingly, the method of the present invention is coded when the code data which is variable length coded and applied is the start address code of the extended area; If there is a picture currently applied in the same GOP layer, determine the type of the currently applied picture; Detects a relative position between the current picture start position and the start position of the previous picture; If there is no picture currently applied, the process consists of allocating an end code indicating that the data portion is finished.

Description

픽쳐 시작위치데이터 코딩방법 및 장치Picture start position data coding method and device

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

제1도는 본 발명에 따른 픽쳐 시작위치데이터 코딩장치도,1 is a picture start position data coding apparatus according to the present invention;

제2도는 본 발명에 따른 시작위치데이터 코딩방법의 흐름도.2 is a flowchart of a start position data coding method according to the present invention.

Claims (9)

가변장부호화되어 인가되는 코드데이터가 확장영역의 시작어드레스 코드인 경우, 코딩하는 제1과정 ; 상기 시작 어드레스코드가 코딩되면, 동일한 그룹(GOP)층에서 현재 인가되는 픽쳐가있는를 판단하는 제2과정 ; 상기 현재 인가되는 픽쳐가 있는 경우, 인가된 픽쳐의 타입을 결정하는 제3과정과 ; 상기 픽쳐타입이 결정되면 현재 인가되는 픽쳐와 이전 픽쳐간의 상대적인 위치를 검출하여 코딩하는 제4과정 ; 상기 제2과정에서 현재 인가되는 픽쳐가 없는 경우 엔드코드를 할당하는 제5과정을 특징으로 하는 픽쳐 시작위치 데이터 코딩방법.A first step of coding when the code data which is variable length coded and applied is the start address code of the extended region; If the starting address code is coded, determining whether there is a picture currently being applied in the same group (GOP) layer; A third process of determining a type of an applied picture when the currently applied picture is present; A fourth step of detecting and coding a relative position between a currently applied picture and a previous picture when the picture type is determined; And a fifth process of allocating an end code when no picture is currently applied in the second process. 제1항에 있어서, 상기 제4과정은 검출된 상기 픽쳐간의 상대적인 위치데이타를 2진 데이터의 1의 보수형태로 변환하여 코딩함을 특징으로 하는 픽쳐 시작위치 데이터 코딩방법.The picture start position data coding method according to claim 1, wherein the fourth process encodes the relative position data between the detected pictures by converting the position data into a complement form of binary data. 제2항에 있어서, 상기 제4과정의 1의 보수형태의 변환에 의하여 비트스트림내의 다른 시작코드(또는 시작위치데이터)들과의 충돌을 막을 수 있도록 0의 값을 소정 비트이상 반복되지 않도록 제한함을 특징으로 하는 픽쳐 시작위치 데이터 코딩방법.3. The method of claim 2, wherein the value of 0 is not repeated more than a predetermined bit so as to prevent collision with other start codes (or start position data) in the bitstream by conversion of the 1's complement form of the fourth process. Picture start position data coding method characterized in that. 제1항에 있어서, 상기 코딩방법의 코딩된 상기 상재적인 위치데이타는 확장 데이터 영역(또는 그룹확장데이터영역)과 유저데이터영역중 어느 하나의 부분에 사용가능함을 특징으노 하는 픽쳐 시작위치 데이터 코딩방법.The picture start position data coding method according to claim 1, wherein the coded positional position data of the coding method is usable in any one of an extended data area (or a group extended data area) and a user data area. . 인가되는 프레임데이터를 이산여현변환하고 양자화하고, 양자화된 데이터를 움직임보상하고, 상기 양자화된 데이터를 가변장부호화하여 데이터를 압축하기 위한 동영상부호화시스템의 픽쳐 시작위치데이터를 코딩하기 위한 장치에 있어서 ; 상기 가변장부호화를 거쳐 출력되는 픽쳐데이터 및 부가정보와 움직임정보상에 의하여 검출되는 움직임벡터 및 프레임모드데이터를 선택적으로 출력하기 위한 멀티플렉서 ; 멀티플렉서에서 출력되는 확장 시작 어드레스코드 및 픽쳐 시작위치데이터를 입력신호로 하여 각 픽쳐간의 상대적인 시작위치 데이터를 검출하여 코딩하고 상기 멀티플렉서로 출력하기 위한 픽쳐 시작위치데이터 코딩부 ; 및 상기 멀티플렉서에서 출력되는 데이터를 일정한 속도를 전송하기 위한 버퍼를 포함함을 특징으로 하는 픽쳐 시작위치데이터 코딩장치.An apparatus for coding picture start position data of a moving picture encoding system for performing discrete cosine transform and quantization of applied frame data, motion compensation of quantized data, and variable length encoding of the quantized data to compress data; A multiplexer for selectively outputting the picture data, the additional information and the motion vector and frame mode data detected through the variable length encoding; A picture start position data coding unit for detecting and coding the relative start position data between the pictures using the extended start address code and the picture start position data output from the multiplexer as input signals and outputting the same to the multiplexer; And a buffer for transmitting a constant speed of the data output from the multiplexer. 제5항에 있어서, 상기 픽쳐 시작위치데이터 코딩부는 상기 시작위치데이터를 비트 데이터로 검출하고, 검출된 데이터를 1의 보수형태를 변환함을 특징으로 하는 픽쳐 시작위치데이터 코딩장치.The picture start position data coding apparatus according to claim 5, wherein the picture start position data coding unit detects the start position data as bit data, and converts the detected data into one's complement form. 제6항에 있어서, 상기 픽쳐 시작위치데이터에서 코딩부는 1의 보수형태로 변환함으로써, 0데이터의 발생수를 소정 수 이하로 제한하게 됨을 특징으로 하는 픽쳐 시작위치데이터 코딩장치.The picture start position data coding apparatus according to claim 6, wherein the coding unit converts the picture start position data into a one's complement form to limit the number of occurrences of 0 data to a predetermined number or less. 제5항에 있어서, 상기 픽쳐 시작위치데이터에서 코딩부의 상기 상대적인 위치데이터를 이전 픽쳐의 시작위치데이터와 현 픽쳐의 시작위치데이터간의 차값으로 검출됨을 특징으로 하는 픽쳐 시작위치데이터 코딩장치.The picture start position data coding apparatus according to claim 5, wherein the relative position data of the coding unit is detected as the difference value between the start position data of the previous picture and the start position data of the current picture. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940003282A 1994-02-24 1994-02-24 Method and apparatus for coding a code indicating picture starting location KR0123092B1 (en)

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