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1. WO2000040032 - ADAPTIVE BUFFER AND QUANTIZER REGULATION SCHEME FOR BANDWIDTH SCALABILITY OF VIDEO DATA

Publication Number WO/2000/040032
Publication Date 06.07.2000
International Application No. PCT/EP1999/010223
International Filing Date 15.12.1999
IPC
H04N 7/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
G06T 9/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
9Image coding
H03M 7/30 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
H03M 7/40 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
40Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
H04N 7/15 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
14Systems for two-way working
15Conference systems
H04N 7/24 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
CPC
H04N 19/103
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
103Selection of coding mode or of prediction mode
H04N 19/115
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
115Selection of the code volume for a coding unit prior to coding
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 19/152
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
152by measuring the fullness of the transmission buffer
H04N 19/159
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
157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
H04N 19/162
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
162User input
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
Inventors
  • TZOU, Shing-Chi; NL
  • WANG, Zhiyong, W.; NL
  • LEE, Junwun; NL
Agents
  • GROENENDAAL, Antonius, W., M.; Internationaal Octrooibureau B.V. Prof. Holstlaan 6 NL-5656 AA Eindhoven, NL
Priority Data
09/219,83223.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ADAPTIVE BUFFER AND QUANTIZER REGULATION SCHEME FOR BANDWIDTH SCALABILITY OF VIDEO DATA
(FR) SYSTEME ADAPTATIF DE REGULATION DE TAMPON ET DE NUMERISEUR POUR ECHELONNABILITE DE LARGEUR DE BANDE DE DONNEES VIDEO
Abstract
(EN)
A method and apparatus for processing and encoding video data is presented that controls a quantization process based on a selection of differing performance objectives. When the communication channel that is used to communicate the encoded video data has a limited bandwidth, a balance must be struck between performance objectives to provide an acceptable image quality at an acceptable image update rate. Consistent image quality is provided by controlling the quantization process based on a set of quantizing parameters that include, for example, an initial value and bounds for the quantizing factor that is applied to each frame of the video data. Additionally, the quantizing parameters are modifiable by a user to achieve a user-determinable balance, based on the user's preference for image quality or image update rate. The user-determinable balance is achieved by a suitable modification of the video frame rate and the quantizing parameters commensurate with the selected frame rate.
(FR)
Cette invention concerne un procédé et un dispositif pour le traitement et le codage de données vidéo qui permettent de piloter un processus de quantification en fonction d'une sélection d'objectifs de performance différents. Lorsque le canal de communication utilisé pour la transmission de données vidéo codées a une largeur de bande limitée, il faut parvenir pour l'image à un équilibre entre une qualité acceptable et une fréquence de mise à jour acceptable. Pour obtenir une qualité d'image uniforme, on agit sur le processus de quantification à partir d'un ensemble de paramètres de quantification qui comprennent, par exemple une valeur initiale et des liaisons pour le facteur de quantification qui est appliqué à chaque trame de données vidéo. Par ailleurs, l'utilisateur a la possibilité de modifier les facteurs de quantification et de créer l'équilibre de son choix entre qualité de l'image et fréquence de mise à jour de l'image. Cet équilibre s'obtient par une modification appropriée du débit de trames vidéo et des paramètres de quantification en fonction du débit de trames retenu.
Also published as
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