KR930015821A - 부호화장치 - Google Patents

부호화장치 Download PDF

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KR930015821A
KR930015821A KR1019920024559A KR920024559A KR930015821A KR 930015821 A KR930015821 A KR 930015821A KR 1019920024559 A KR1019920024559 A KR 1019920024559A KR 920024559 A KR920024559 A KR 920024559A KR 930015821 A KR930015821 A KR 930015821A
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KR100254505B1 (ko
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다까아끼 야마다
히로시 오까다
나오후미 야나기하라
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오오가 노리오
소니 가부시끼가이샤
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H04N9/8047—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction using transform coding
    • 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
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/149—Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
    • 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
    • H04N19/176—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 block, e.g. a macroblock
    • 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
    • H04N19/18—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 set of transform coefficients
    • 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
    • H04N19/186—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 colour or a chrominance component
    • 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
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/88—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
    • H04N5/9261—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction
    • H04N5/9264—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction using transform coding
    • 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
    • H04N19/102—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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/146—Data rate or code amount at the encoder output

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

예컨대(8×8) 화소를 1블럭으로 하고 블럭마다 DCT 변환을 행하여 대역 압축을 행하고 DCT 변환 데이타의 2차 원 배열을 복수의 영역으로 분할하고, 각 영역마다 상이한 제수로 나눗셈하고 양자화할때, 간단한 구성으로 나눗셈을 행할 수 있게 하고, 비용절감과 처리의 고속화를 도모한다.
예컨대(8×8) 화소를 1블럭으로 하고 블럭마다 DCT 변환을 행하여 대역 압축을 행하고 DCT 변환 데이타의 2차 원 배열을 복수의 영역으로 분할하고, 각 영역마다 상이한 제수로 나눗셈하고 양자화할때, 제수를 2의 폭승 또는 2의 폭승에 2의 평방근을 곱한 수로 설정한다. 이같이 하면 시프트회로(53,54,55)와 가산회로(52,56,57)로 나눗셈을 행할 수 있다.

Description

부호화 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 적용된 디지틀 VTR 기록계의 구성을 도시하는 블럭도, 제2도는 본 발명의 적용된 디지틀 VTR에서의 DCT 블럭의 설명에 쓰는 약선도, 제3도는 본 발명의 적용된 디지틀 VTR에서의 마크로블럭의 설명에 쓰는 약선도.

Claims (3)

  1. 한 화면중의 화소로 블럭을 구성하고 상기 각 블럭마다 DCT 변환을 행하고 상기 DCT 변환 데이타의 2차원 배열을 복수의 영역으로 분할하고 상기 각 영역마다 상기한 수의 제수로 나눗셈하고 양자화하는 부호화 장치에서 상기 제수는 2의 폭승의 수, 또는 2의 폭승에 2의 평방근을 곱한 수로 하게 한 부호화장치.
  2. 제1항에 있어서, 상기 2폭승의 제산은 가산기와 시프트회로를 써서 실현되는 부호화장치.
  3. 한 화면중의 복수의 화소로 블럭을 구성하고 상기 각 블럭마다 DCT 변환을 행하고 상기 DCT 변환 데이타의 2차원 배열을 복수의 영역으로 분할하고 상기 각 영역마다 상이한 수의 제수로 나눗셈하고 양자화하는 부호화 장치에서, 상기 DCT 변환 데이타의 2차원 배열을 경사방향의 주파수축에 대해서 약 직각방향으로 분할해서 영역을 설정토록 한 부호화장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920024559A 1991-12-28 1992-12-17 부호화 장치 KR100254505B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP35863191A JP3298915B2 (ja) 1991-12-28 1991-12-28 符号化装置
JP91-358631 1991-12-28

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KR930015821A true KR930015821A (ko) 1993-07-24
KR100254505B1 KR100254505B1 (ko) 2000-05-01

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US (1) US5347310A (ko)
EP (1) EP0550012B1 (ko)
JP (1) JP3298915B2 (ko)
KR (1) KR100254505B1 (ko)
AU (1) AU653877B2 (ko)
CA (1) CA2086316C (ko)
DE (1) DE69226160T2 (ko)

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Also Published As

Publication number Publication date
EP0550012A2 (en) 1993-07-07
EP0550012B1 (en) 1998-07-08
CA2086316A1 (en) 1993-06-29
KR100254505B1 (ko) 2000-05-01
US5347310A (en) 1994-09-13
CA2086316C (en) 2003-05-13
AU3044292A (en) 1993-07-01
JPH05183890A (ja) 1993-07-23
DE69226160D1 (de) 1998-08-13
EP0550012A3 (ko) 1994-04-20
DE69226160T2 (de) 1998-11-12
JP3298915B2 (ja) 2002-07-08
AU653877B2 (en) 1994-10-13

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