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 PDFInfo
- 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
Links
- 238000013139 quantization Methods 0.000 claims description 107
- 230000003044 adaptive effect Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 7
- 238000011002 quantification Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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)
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)
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)
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 |
-
1989
- 1989-08-21 JP JP21523389A patent/JPH0828875B2/ja not_active Expired - Lifetime
-
1990
- 1990-08-17 CA CA 2023543 patent/CA2023543C/en not_active Expired - Lifetime
- 1990-08-20 EP EP19900115937 patent/EP0414193B1/en not_active Expired - Lifetime
- 1990-08-20 AU AU61136/90A patent/AU625476B2/en not_active Expired
- 1990-08-20 US US07/569,927 patent/US5072295A/en not_active Expired - Lifetime
- 1990-08-20 KR KR1019900012778A patent/KR940005516B1/ko not_active IP Right Cessation
- 1990-08-20 SG SG1996009148A patent/SG45452A1/en unknown
- 1990-08-20 DE DE69027820T patent/DE69027820T2/de not_active Expired - Lifetime
- 1990-08-21 FI FI904133A patent/FI98421C/fi active IP Right Grant
- 1990-08-21 NO NO903668A patent/NO306749B1/no not_active IP Right Cessation
-
1998
- 1998-06-27 HK HK98107110A patent/HK1008129A1/xx not_active IP Right Cessation
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK1K | Patent expired |