KR960028446A - Video encoder - Google Patents

Video encoder Download PDF

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Publication number
KR960028446A
KR960028446A KR1019940034882A KR19940034882A KR960028446A KR 960028446 A KR960028446 A KR 960028446A KR 1019940034882 A KR1019940034882 A KR 1019940034882A KR 19940034882 A KR19940034882 A KR 19940034882A KR 960028446 A KR960028446 A KR 960028446A
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KR
South Korea
Prior art keywords
output signal
subband
signal
discrete cosine
subtractor
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KR1019940034882A
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Korean (ko)
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KR0169655B1 (en
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이상일
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배순훈
대우전자 주식회사
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Priority to KR1019940034882A priority Critical patent/KR0169655B1/en
Publication of KR960028446A publication Critical patent/KR960028446A/en
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Publication of KR0169655B1 publication Critical patent/KR0169655B1/en

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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
    • H04N19/42—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
    • H04N19/436—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 using parallelised computational arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
    • H03K19/1733—Controllable logic circuits
    • H03K19/1737—Controllable logic circuits using multiplexers
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • 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
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Image Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명에 의한 동영상 부호화기에서는 소스 입력신호를 주파수대역별로 N개의 서브밴드신호로 나누어 각 서브밴드신호에 대하여 병렬로 부호화처리함으로써 부호화에 소요되는 시간을 줄일 수 있고, 각 주파수대역에 대하여 조밀하게 양자화를 수행할 수 있으므로 복원영상의 화질을 개선시킬 수 있는 이점이 있다.In the video encoder according to the present invention, the time required for encoding can be reduced by dividing the source input signal into N subband signals for each frequency band in parallel for each subband signal, and compactly quantizing each frequency band. Since it can be performed there is an advantage that can improve the quality of the reconstructed image.

Description

동영상 부호화기Video encoder

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

제2도는 본 발명에 의한 동영상 부호화기의 구성을 나타낸 블럭도.2 is a block diagram showing the configuration of a video encoder according to the present invention.

Claims (2)

소스 입력신호를 N개의 서브밴드별로 나누어 각 서브밴드신호에 대하여 부호화처리하기 위한 N개의 서브밴드 부호화수단(10, 20); 및 상기 N개의 서브밴드 부호화수단에서 부호화되어 출력되는 서브밴드 신호를 선택적으로 출력하기 위한 절환수단(30)을 포함하는 것을 특징으로 하는 동영상 부호화기.N subband encoding means (10, 20) for dividing the source input signal into N subbands and performing encoding processing on each subband signal; And switching means (30) for selectively outputting subband signals encoded and output by the N subband encoding means. 제1항에 있어서, 상기 N개의 서브밴드 부호화수단은 상기 소스 입력신호를 N개의 서브밴드신호로 나누기 위한 대역분할부(11); 상기 대역분할부(11)에서 출력되는 서브밴드신호와 복원된 차영상신호를 감신하기 위한 제1감산기(12); 상기 제1감산기(12)의 출력신호를 이산여현변환하기 위한 이산여현변환기(13); 상기 이산여현변환기(13)의 출력신호를 역이산여현변환하여 상기 제1감산기(12)로 출력하기 위한 역이산여현변환기(14); 상기 이산여현변환기(13)의 출력신호와 복원된 차영상신호를 감산하기 위한 제2감산기(15); 상기 제2감산기(15)의 출력신호를 양자화하기 위한 양자화기(16); 상기 양자화기(16)의 출력신호를 역양자화하기 위한 역양자화기(17); 상기 양자화기(16)의 출력신호를 가변장부호화하기 위한 가변장부호화기(18); 및 상기 제1 및 제2감산기(12, 15)의 출력신호와 가변장부호화기(18)의 출력신호 중 하나를 선택적으로 출력하기 위한 멀티플렉서(19)로 이루어지는 것을 특징으로 하는 동영상 부호화기.2. The apparatus of claim 1, wherein the N subband encoding means comprises: a band dividing unit (11) for dividing the source input signal into N subband signals; A first subtractor 12 for receiving the subband signal outputted from the band splitter 11 and the reconstructed difference image signal; A discrete cosine transformer (13) for discrete cosine transforming the output signal of the first subtractor (12); An inverse discrete cosine transformer (14) for inverse discrete cosine transforming the output signal of the discrete cosine converter (13) to the first subtractor (12); A second subtractor 15 for subtracting the output signal of the discrete cosine converter 13 and the reconstructed difference image signal; A quantizer 16 for quantizing the output signal of the second subtractor 15; An inverse quantizer (17) for inverse quantization of the output signal of the quantizer (16); A variable length encoder (18) for variable length encoding the output signal of the quantizer (16); And a multiplexer (19) for selectively outputting one of an output signal of said first and second subtractors (12, 15) and an output signal of a variable length encoder (18). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034882A 1994-12-19 1994-12-19 Device for encoding moving picture signal KR0169655B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940034882A KR0169655B1 (en) 1994-12-19 1994-12-19 Device for encoding moving picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940034882A KR0169655B1 (en) 1994-12-19 1994-12-19 Device for encoding moving picture signal

Publications (2)

Publication Number Publication Date
KR960028446A true KR960028446A (en) 1996-07-22
KR0169655B1 KR0169655B1 (en) 1999-03-20

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KR1019940034882A KR0169655B1 (en) 1994-12-19 1994-12-19 Device for encoding moving picture signal

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Publication number Priority date Publication date Assignee Title
KR100828163B1 (en) * 2006-05-04 2008-05-08 고려대학교 산학협력단 Method for synchronized encryption and decryption of audio and Apparatus thereof

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