ES2031499T3 - Metodo y codificador para codificar senales de datos. - Google Patents
Metodo y codificador para codificar senales de datos.Info
- Publication number
- ES2031499T3 ES2031499T3 ES198787302102T ES87302102T ES2031499T3 ES 2031499 T3 ES2031499 T3 ES 2031499T3 ES 198787302102 T ES198787302102 T ES 198787302102T ES 87302102 T ES87302102 T ES 87302102T ES 2031499 T3 ES2031499 T3 ES 2031499T3
- Authority
- ES
- Spain
- Prior art keywords
- pixel
- prediction
- pixel values
- coded
- encoder
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
-
- 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
- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
-
- 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
- H04N19/90—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
- H04N19/93—Run-length coding
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Image Processing (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
UNA TRANSFORMACION APROXIMA EL CODIGO IMAGEN DONDE LOS PIXELS ESTAN CODIFICADOS EN EL ORDEN PREESTABLECIDO POR UNA LISTA PREDETERMINADA. EL CODIGO PARA CADA PIXEL SE DESARROLLA COMPUTANDO UNA PREDICCION PARA EL PIXEL BASADA EN LOS VALORES PIXEL CONOCIDOS EN LAS PROXIMIDADES DEL MISMO Y SUSTRAYENDO A ESTA PREDICCION EL VALOR VERDADERO DEL PIXEL. SE OBTIENE COMO RESULTADO UNA SECUENCIA DE ERRORES DE PREDICCION DE VALORES DE PIXEL DISTINTOS DE CERO, PREDOMINANTEMENTE AL PRINCIPIO DEL PROCESO DE DECODIFICACION DE CADA BLOQUE, Y ERRORES DE PREDICCION DE VALORES PIXEL IGUALES A CERO PREDOMINANTEMENTE HACIA EL FINAL DEL PROCESO DE CODIFICACION. UNA AMPLIACION DE ESTA APROXIMACION INCLUYE LA CODIFICACION ADAPTATIVA, DONDE LAS SECUENCIAS PIXEL CON ERRORES DE PREDICCION CERO NO SE CODIFICAN Y CODIFICACION DE LONGITUD DE LAS SEÑALES A TRANSMITIR O A ALMACENAR PARA AUMENTAR EL PROCESO DE DECODIFICACION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84157186A | 1986-03-20 | 1986-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2031499T3 true ES2031499T3 (es) | 1992-12-16 |
Family
ID=25285205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES198787302102T Expired - Lifetime ES2031499T3 (es) | 1986-03-20 | 1987-03-11 | Metodo y codificador para codificar senales de datos. |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0238254B1 (es) |
JP (1) | JPS62284535A (es) |
KR (1) | KR870009570A (es) |
CN (1) | CN1013633B (es) |
CA (1) | CA1279405C (es) |
DE (1) | DE3779345D1 (es) |
ES (1) | ES2031499T3 (es) |
HK (1) | HK96693A (es) |
SG (1) | SG124192G (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3709094A1 (de) * | 1987-03-23 | 1988-10-06 | Ant Nachrichtentech | Verfahren zur codierung von bildsignalen |
TW224553B (en) * | 1993-03-01 | 1994-06-01 | Sony Co Ltd | Method and apparatus for inverse discrete consine transform and coding/decoding of moving picture |
JP3374989B2 (ja) * | 1993-03-26 | 2003-02-10 | ソニー株式会社 | 画像信号符号化方法および画像信号符号化装置、ならびに画像信号復号化方法および画像信号復号化装置 |
JP3163830B2 (ja) * | 1993-03-29 | 2001-05-08 | ソニー株式会社 | 画像信号伝送方法及び装置 |
US5883976A (en) * | 1994-12-28 | 1999-03-16 | Canon Kabushiki Kaisha | Selectively utilizing multiple encoding methods |
EP1689189A3 (en) * | 1996-11-07 | 2008-12-10 | Panasonic Corporation | Image encoder and image decoder |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005411A (en) * | 1974-12-30 | 1977-01-25 | International Business Machines Corporation | Compression of gray scale imagery to less than one bit per picture element |
DE2640140C2 (de) * | 1976-09-07 | 1982-10-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren und Anordnung zur redundanzvermindernden Bildcodierung |
JPS53139916A (en) * | 1977-05-12 | 1978-12-06 | Nec Corp | Forecasting coder for video signal |
JPS5386513A (en) * | 1977-01-10 | 1978-07-31 | Hitachi Ltd | Encoding system for picture signal |
JPS5658368A (en) * | 1979-10-17 | 1981-05-21 | Matsushita Electric Ind Co Ltd | Band compressing method |
JPS5752281A (en) * | 1980-09-12 | 1982-03-27 | Nec Corp | Forecast encoding device of picture signal |
US4369463A (en) * | 1981-06-04 | 1983-01-18 | International Business Machines Corporation | Gray scale image data compression with code words a function of image history |
JPS60144088A (ja) * | 1983-12-30 | 1985-07-30 | Fujitsu Ltd | 適応形符号化方式 |
JPS60169275A (ja) * | 1984-02-13 | 1985-09-02 | Toshiba Corp | 2次元圧縮装置 |
-
1987
- 1987-03-11 ES ES198787302102T patent/ES2031499T3/es not_active Expired - Lifetime
- 1987-03-11 EP EP87302102A patent/EP0238254B1/en not_active Expired - Lifetime
- 1987-03-11 DE DE8787302102T patent/DE3779345D1/de not_active Expired - Fee Related
- 1987-03-18 CA CA000532308A patent/CA1279405C/en not_active Expired - Fee Related
- 1987-03-19 KR KR870002476A patent/KR870009570A/ko not_active Application Discontinuation
- 1987-03-19 CN CN87101996A patent/CN1013633B/zh not_active Expired
- 1987-03-20 JP JP62064462A patent/JPS62284535A/ja active Pending
-
1992
- 1992-12-09 SG SG1241/92A patent/SG124192G/en unknown
-
1993
- 1993-09-16 HK HK966/93A patent/HK96693A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN87101996A (zh) | 1987-12-09 |
EP0238254A2 (en) | 1987-09-23 |
DE3779345D1 (de) | 1992-07-02 |
SG124192G (en) | 1993-02-19 |
CA1279405C (en) | 1991-01-22 |
CN1013633B (zh) | 1991-08-21 |
HK96693A (en) | 1993-09-24 |
EP0238254B1 (en) | 1992-05-27 |
KR870009570A (ko) | 1987-10-27 |
JPS62284535A (ja) | 1987-12-10 |
EP0238254A3 (en) | 1988-03-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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