EP 1075759 A4 20090128 - VIDEO COMPRESSION IN INFORMATION SYSTEM
Title (en)
VIDEO COMPRESSION IN INFORMATION SYSTEM
Title (de)
VIDEOKOMPRIMIERUNG IN INFORMATIONSSYSTEMEN
Title (fr)
COMPRESSION DE DONNEES VIDEO DANS UN SYSTEME D'INFORMATIONS
Publication
Application
Priority
- US 9909315 W 19990429
- US 6936498 A 19980429
Abstract (en)
[origin: WO9956461A1] A video image data field to be compression-encoded is divided into rectangular blocks. Each of the rectangular blocks is compared (130) with a corresponding (132) block of a reference image to generate comparison data. The block of the image to be encoded is selected for representation if the comparison data for the block meets a selection criterion. Mapping data is generated which is indicative of locations in the image plane corresponding to the selected blocks. The image to be encoded is represented in compressed form by header data (106), the mapping data (108) and image data representative of the selected blocks. When the reference image is compression encoded (206), the blocks may be expanded in areas of the reference image which correspond to a low information density. System configuration consists of a back panel (46) which is coupled to a front end processing/compression unit (42) which interfaces with a motherboard (40) through a PCI bus.
IPC 8 full level
H04N 1/413 (2006.01); H04N 7/26 (2006.01); H04N 7/30 (2006.01); H04N 7/32 (2006.01); H04N 7/50 (2006.01)
CPC (source: EP)
H04N 19/51 (2014.11); H04N 19/60 (2014.11); H04N 19/61 (2014.11); H04N 19/107 (2014.11); H04N 19/13 (2014.11); H04N 19/91 (2014.11)
Citation (search report)
- [A] EP 0598480 A1 19940525 - IBM [US]
- [X] WEIGUO ZHENG ET AL: "A novel video coding scheme with frequency-domain-based conditional frame replenishment algorithm", INFORMATION, COMMUNICATIONS AND SIGNAL PROCESSING, 1997. ICICS., PROCE EDINGS OF 1997 INTERNATIONAL CONFERENCE ON SINGAPORE 9-12 SEPT. 1997, NEW YORK, NY, USA,IEEE, US, vol. 1, 9 September 1997 (1997-09-09), pages 274 - 278, XP010263857, ISBN: 978-0-7803-3676-6
- [A] GHANBARI M: "TWO-LAYER CODING OF VIDEO SIGNALS FOR VBR NETWORKS", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, IEEE SERVICE CENTER, PISCATAWAY, US, vol. 7, no. 5, 1 June 1989 (1989-06-01), pages 771 - 781, XP000036748, ISSN: 0733-8716
- [X] JONAS H W: "A CONDITIONAL REPLENISHMENT HADAMARD VIDEO COMPRESSOR", PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATIONENGINEERS. APPLICATIONS OF DIGITAL IMAGE PROCESSING, XX, XX, vol. 119, 25 August 1977 (1977-08-25), pages 91 - 98, XP002071018
- [A] MCCANNE S ET AL: "vic: A Flexible Framework for Packet Video", PROC ACM INT MULTIMEDIA CONF EXHIB; PROCEEDINGS OF THE ACM INTERNATIONAL MULTIMEDIA CONFERENCE & EXHIBITION 1995 ACM, NEW YORK, NY, USA, 1995, XP002371593, Retrieved from the Internet <URL:ftp://ftp.ee.lbl.gov/papers/vic-mm95.ps.Z> [retrieved on 20080821]
- See references of WO 9956461A1
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
WO 9956461 A1 19991104; AU 3771399 A 19991116; AU 753002 B2 20021003; BR 9909955 A 20001226; CA 2326674 A1 19991104; CA 2326674 C 20080108; EP 1075759 A1 20010214; EP 1075759 A4 20090128; JP 2002513251 A 20020508
DOCDB simple family (application)
US 9909315 W 19990429; AU 3771399 A 19990429; BR 9909955 A 19990429; CA 2326674 A 19990429; EP 99920146 A 19990429; JP 2000546513 A 19990429