NO306749B1 - Omkodere for omvandling av digitale signaler og dekoder for dekoding av omkodede signaler - Google Patents

Omkodere for omvandling av digitale signaler og dekoder for dekoding av omkodede signaler Download PDF

Info

Publication number
NO306749B1
NO306749B1 NO903668A NO903668A NO306749B1 NO 306749 B1 NO306749 B1 NO 306749B1 NO 903668 A NO903668 A NO 903668A NO 903668 A NO903668 A NO 903668A NO 306749 B1 NO306749 B1 NO 306749B1
Authority
NO
Norway
Prior art keywords
quantization
signal
decoder
encoder
limiter
Prior art date
Application number
NO903668A
Other languages
English (en)
Norwegian (no)
Other versions
NO903668L (no
NO903668D0 (no
Inventor
Tokumichi Murakami
Yoshiaki Kato
Hideo Ohira
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=16668919&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO306749(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of NO903668D0 publication Critical patent/NO903668D0/no
Publication of NO903668L publication Critical patent/NO903668L/no
Publication of NO306749B1 publication Critical patent/NO306749B1/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3044—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM]
    • H03M7/3046—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM] adaptive, e.g. adaptive differential pulse code modulation [ADPCM]
    • 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
    • H04N19/60—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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
NO903668A 1989-08-21 1990-08-21 Omkodere for omvandling av digitale signaler og dekoder for dekoding av omkodede signaler NO306749B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21523389A JPH0828875B2 (ja) 1989-08-21 1989-08-21 符号化装置および復号化装置

Publications (3)

Publication Number Publication Date
NO903668D0 NO903668D0 (no) 1990-08-21
NO903668L NO903668L (no) 1991-02-22
NO306749B1 true NO306749B1 (no) 1999-12-13

Family

ID=16668919

Family Applications (1)

Application Number Title Priority Date Filing Date
NO903668A NO306749B1 (no) 1989-08-21 1990-08-21 Omkodere for omvandling av digitale signaler og dekoder for dekoding av omkodede signaler

Country Status (11)

Country Link
US (1) US5072295A (ko)
EP (1) EP0414193B1 (ko)
JP (1) JPH0828875B2 (ko)
KR (1) KR940005516B1 (ko)
AU (1) AU625476B2 (ko)
CA (1) CA2023543C (ko)
DE (1) DE69027820T2 (ko)
FI (1) FI98421C (ko)
HK (1) HK1008129A1 (ko)
NO (1) NO306749B1 (ko)
SG (1) SG45452A1 (ko)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0379182A (ja) * 1989-08-23 1991-04-04 Fujitsu Ltd 画像符号化制御方式
JP2892783B2 (ja) * 1990-07-09 1999-05-17 松下電器産業株式会社 動画像信号の符号化装置
JPH04256298A (ja) * 1991-02-08 1992-09-10 Toshiba Corp 動画像符号化装置
JPH05183888A (ja) * 1991-12-27 1993-07-23 Mitsubishi Electric Corp 情報源符号化装置
JP2894067B2 (ja) * 1992-02-26 1999-05-24 日本電気株式会社 動画像符号化制御方法および動画像符号化装置
JPH06141185A (ja) * 1992-10-26 1994-05-20 Nec Corp 画像間引き装置
JPH06165151A (ja) * 1992-11-25 1994-06-10 Matsushita Electric Ind Co Ltd 映像符号量制御装置
JPH07170407A (ja) * 1993-12-14 1995-07-04 Nec Corp 画像データ圧縮システム
US5537440A (en) * 1994-01-07 1996-07-16 Motorola, Inc. Efficient transcoding device and method
FR2718303B1 (fr) * 1994-03-30 1996-07-12 Sgs Thomson Microelectronics Circuit de quantification.
US5940130A (en) * 1994-04-21 1999-08-17 British Telecommunications Public Limited Company Video transcoder with by-pass transfer of extracted motion compensation data
KR0129573B1 (ko) * 1994-04-30 1998-04-10 배순훈 디지탈 화상 복호화를 위한 디씨(dc) 계수의 오차보상 방법
KR0128881B1 (ko) * 1994-04-30 1998-04-10 배순훈 디지틀화상복호화장치
US6141446A (en) * 1994-09-21 2000-10-31 Ricoh Company, Ltd. Compression and decompression system with reversible wavelets and lossy reconstruction
US5889561A (en) * 1994-11-04 1999-03-30 Rca Thomson Licensing Corporation Method and apparatus for scaling a compressed video bitstream
KR100727787B1 (ko) * 1995-01-25 2007-11-09 톰슨 비디오신호압축시스템들을위한양자화회로
JPH08256341A (ja) * 1995-03-17 1996-10-01 Sony Corp 画像信号符号化方法、画像信号符号化装置、画像信号記録媒体、及び画像信号復号化装置
US5731837A (en) * 1996-01-25 1998-03-24 Thomson Multimedia, S.A. Quantization circuitry as for video signal compression systems
US5870146A (en) * 1997-01-21 1999-02-09 Multilink, Incorporated Device and method for digital video transcoding
JP3143406B2 (ja) * 1997-02-19 2001-03-07 三洋電機株式会社 音声符号化方法
IL122361A0 (en) 1997-11-29 1998-04-05 Algotec Systems Ltd Image compression method
KR100341673B1 (ko) * 2000-03-25 2002-06-24 박홍기 무우를 이용한 증류수식 음용수의 제조 방법
US7403561B2 (en) * 2003-04-04 2008-07-22 Avid Technology, Inc. Fixed bit rate, intraframe compression and decompression of video
US7433519B2 (en) * 2003-04-04 2008-10-07 Avid Technology, Inc. Bitstream format for compressed image data
US7580584B2 (en) 2003-07-18 2009-08-25 Microsoft Corporation Adaptive multiple quantization
US7602851B2 (en) 2003-07-18 2009-10-13 Microsoft Corporation Intelligent differential quantization of video coding
US7738554B2 (en) 2003-07-18 2010-06-15 Microsoft Corporation DC coefficient signaling at small quantization step sizes
US8218624B2 (en) 2003-07-18 2012-07-10 Microsoft Corporation Fractional quantization step sizes for high bit rates
US10554985B2 (en) 2003-07-18 2020-02-04 Microsoft Technology Licensing, Llc DC coefficient signaling at small quantization step sizes
US7801383B2 (en) 2004-05-15 2010-09-21 Microsoft Corporation Embedded scalar quantizers with arbitrary dead-zone ratios
US8422546B2 (en) 2005-05-25 2013-04-16 Microsoft Corporation Adaptive video encoding using a perceptual model
US7974340B2 (en) 2006-04-07 2011-07-05 Microsoft Corporation Adaptive B-picture quantization control
US8059721B2 (en) 2006-04-07 2011-11-15 Microsoft Corporation Estimating sample-domain distortion in the transform domain with rounding compensation
US8130828B2 (en) 2006-04-07 2012-03-06 Microsoft Corporation Adjusting quantization to preserve non-zero AC coefficients
US8503536B2 (en) 2006-04-07 2013-08-06 Microsoft Corporation Quantization adjustments for DC shift artifacts
US7995649B2 (en) 2006-04-07 2011-08-09 Microsoft Corporation Quantization adjustment based on texture level
US8711925B2 (en) 2006-05-05 2014-04-29 Microsoft Corporation Flexible quantization
US9454974B2 (en) * 2006-07-31 2016-09-27 Qualcomm Incorporated Systems, methods, and apparatus for gain factor limiting
US8238424B2 (en) 2007-02-09 2012-08-07 Microsoft Corporation Complexity-based adaptive preprocessing for multiple-pass video compression
US8498335B2 (en) 2007-03-26 2013-07-30 Microsoft Corporation Adaptive deadzone size adjustment in quantization
US20080240257A1 (en) * 2007-03-26 2008-10-02 Microsoft Corporation Using quantization bias that accounts for relations between transform bins and quantization bins
US8243797B2 (en) 2007-03-30 2012-08-14 Microsoft Corporation Regions of interest for quality adjustments
US8442337B2 (en) 2007-04-18 2013-05-14 Microsoft Corporation Encoding adjustments for animation content
US8331438B2 (en) 2007-06-05 2012-12-11 Microsoft Corporation Adaptive selection of picture-level quantization parameters for predicted video pictures
US8189933B2 (en) 2008-03-31 2012-05-29 Microsoft Corporation Classifying and controlling encoding quality for textured, dark smooth and smooth video content
US8897359B2 (en) 2008-06-03 2014-11-25 Microsoft Corporation Adaptive quantization for enhancement layer video coding
US9167261B2 (en) 2011-11-07 2015-10-20 Sharp Laboratories Of America, Inc. Video decoder with constrained dynamic range
US10531099B2 (en) * 2016-09-30 2020-01-07 The Mitre Corporation Systems and methods for distributed quantization of multimodal images

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331426A1 (de) * 1983-08-31 1985-03-14 Siemens AG, 1000 Berlin und 8000 München Anordnung zur zweidimensionalen dpcm-codierung
DE3511660A1 (de) * 1985-03-29 1986-10-02 Siemens AG, 1000 Berlin und 8000 München Verfahren zur verbesserung der bildqualitaet bei dpcm-codierten bildsignalen
JPS62214792A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 差分符号化装置
DE3788674D1 (de) * 1986-04-19 1994-02-17 Philips Patentverwaltung Hybrid-Codierer für Videosignale.
BE1000643A5 (fr) * 1987-06-05 1989-02-28 Belge Etat Procede de codage de signaux d'image.
JP2603963B2 (ja) * 1987-09-10 1997-04-23 株式会社東芝 動画像符号化装置
US4847866A (en) * 1988-02-01 1989-07-11 Eastman Kodak Company Differential pulse code modulation scheme incorporating a reconstructed value constrainer
US4891698A (en) * 1988-06-14 1990-01-02 Siemens Aktiengesellschaft Arrangement for DPCM-coding of video signals
US4893184A (en) * 1988-06-14 1990-01-09 Siemens Aktiengesellschaft Arrangement for DPCM-coding with high data rate

Also Published As

Publication number Publication date
SG45452A1 (en) 1998-01-16
CA2023543C (en) 1994-07-12
AU6113690A (en) 1991-02-21
CA2023543A1 (en) 1992-02-18
NO903668L (no) 1991-02-22
EP0414193B1 (en) 1996-07-17
EP0414193A2 (en) 1991-02-27
FI98421B (fi) 1997-02-28
KR940005516B1 (ko) 1994-06-20
NO903668D0 (no) 1990-08-21
DE69027820D1 (de) 1996-08-22
DE69027820T2 (de) 1996-11-21
FI904133A0 (fi) 1990-08-21
JPH0378382A (ja) 1991-04-03
JPH0828875B2 (ja) 1996-03-21
HK1008129A1 (en) 1999-04-30
KR910005591A (ko) 1991-03-30
AU625476B2 (en) 1992-07-09
US5072295A (en) 1991-12-10
FI98421C (fi) 1997-06-10
EP0414193A3 (en) 1991-12-27

Similar Documents

Publication Publication Date Title
NO306749B1 (no) Omkodere for omvandling av digitale signaler og dekoder for dekoding av omkodede signaler
US4851906A (en) Data compression using orthogonal transform and vector quantization
CA2017384C (en) Transformation coding device
US4707738A (en) Adaptive process for the coding and decoding of a sequence of pictures by transformation and devices for performing this process
US4797742A (en) Divisional image transmission system and method
JPH04229791A (ja) ビデオコード化システムで用いる装置
KR920007364A (ko) 양자화 스텝 사이즈 결정방법 및 장치
JPH10174096A (ja) 適応形格子量子化技法によるビデオ信号の符号化及び復号化方法
CN1273746A (zh) 数据流的代码转换
US5459515A (en) Method for dual-standard coding of very low data-rate images and coder-decoder for implementing this method
JP2780864B2 (ja) 画像処理システム
KR960036756A (ko) 벡터 양자화 방식을 이용한 영상 신호 부호화 장치
JP3659366B2 (ja) 階層符号化装置
JPH03140074A (ja) 動画像符号化装置
JP3055269B2 (ja) 伝送路誤り補償方法
JPH0237748B2 (ko)
KR100204470B1 (ko) 탈출 피티에스 벡터 양자화기
Tubaro A hybrid image coder with vector quantizer
JPS6028453B2 (ja) 符号化方式
JPS6269742A (ja) 符号化方式
JPH05183894A (ja) 画像符号化／復号装置
KR970014373A (ko) 영상 부호기 및 복호기
JPS62145987A (ja) 画像符号化方式
JPH01286677A (ja) 画像データ圧縮方式
JPH04134988A (ja) 画像の符号化装置

Legal Events

Date Code Title Description
MK1K Patent expired