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1. WO1999027715 - METHOD AND APPARATUS FOR COMPRESSING REFERENCE FRAMES IN AN INTERFRAME VIDEO CODEC

Publication Number WO/1999/027715
Publication Date 03.06.1999
International Application No. PCT/IB1998/001848
International Filing Date 19.11.1998
Chapter 2 Demand Filed 19.06.1999
IPC
G06T 9/00 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
9Image coding
H04N 7/26 2006.1
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
H04N 7/50 2006.1
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
50involving transform and predictive coding
CPC
H04N 19/186
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
186the unit being a colour or a chrominance component
H04N 19/423
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
42characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
423characterised by memory arrangements
H04N 19/428
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
42characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
423characterised by memory arrangements
426using memory downsizing methods
428Recompression, e.g. by spatial or temporal decimation
H04N 19/61
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
60using transform coding
61in combination with predictive coding
Applicants
  • SHARP LABORATORIES OF AMERICA, INC. [US]/[US]
Inventors
  • LEI, Shaw-Min
Agents
  • FORD, Stephen, S.
Priority Data
08/975,92221.11.1997US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR COMPRESSING REFERENCE FRAMES IN AN INTERFRAME VIDEO CODEC
(FR) PROCEDE ET APPAREIL POUR COMPRIMER DES TRAMES DE REFERENCE DANS UN CODEC VIDEO INTER-TRAMES
Abstract
(EN) A reference image compressor for use in an encoding system or a decoding system. The reference image compressor includes compression circuitry and decompression circuitry. The compression circuitry compresses reference frame informtion. The decompression circuitry decompresses at least a portion of the reference frame information where the portion is selected in response to a motion vector.
(FR) L'invention concerne un compresseur d'images de référence s'utilisant dans un système de codage ou un système de décodage. Ce compresseur renferme des circuits de compression et des circuits de décompression. Les circuits de compression compriment les informations de trame de référence. Les circuits de décompression décompriment au moins une portion des informations de trame de référence dans le cas où cette portion est choisie en fonction d'un vecteur de mouvement.
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