Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. JP1995502154 - 文書画像圧縮のシステムおよび方法

Office Japon
Numéro de la demande 1993510145
Date de la demande 19.11.1992
Numéro de publication 1995502154
Date de publication 02.03.1995
Type de publication A
CIB
H04N 1/41
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
NTRANSMISSION D'IMAGES, p.ex. TÉLÉVISION
1Balayage, transmission ou reproduction de documents ou similaires, p.ex. transmission de fac-similés; Leurs détails
41Réduction de la largeur de bande ou de la redondance
H04N 7/30
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
NTRANSMISSION D'IMAGES, p.ex. TÉLÉVISION
7Systèmes de télévision
24Systèmes pour la transmission de signaux de télévision utilisant la modulation par impulsions codées
26utilisant la réduction de la largeur de bande
30comportant un codage par transformation
CPC
H04N 1/4074
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
40Picture signal circuits
407Control or modification of tonal gradation or of extreme levels, e.g. background level
4072dependent on the contents of the original
4074using histograms
H04N 19/124
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
124Quantisation
H04N 19/126
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
124Quantisation
126Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
H04N 19/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
136Incoming video signal characteristics or properties
14Coding unit complexity, e.g. amount of activity or edge presence estimation
H04N 19/146
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
H04N 19/149
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
149by estimating the code amount by means of a model, e.g. mathematical model or statistical model
Déposants
Inventeurs ヒッギンス-ルスマン,マイケル・ジョーン
キッド,ロバート・チャールズ
クレイン,ロバート・デニス
イェン,ロバート・チースング
ザリンスキー,チャールズ・マーティン
Mandataires 深見 久郎
森田 俊雄
伊藤 英彦
堀井 豊
Données relatives à la priorité 07796703 21.11.1991 US
Titre
(JA) 文書画像圧縮のシステムおよび方法
Abrégé