EP 0982708 A1 20000301 - Method and apparatus for processing video pictures, in particular for large area flicker effect reduction
Title (en)
Method and apparatus for processing video pictures, in particular for large area flicker effect reduction
Title (de)
Verfahren und Vorrichtung zur Verarbeitung von Videobildern, insbesondere zur Reduzierung von grossflächigem Flimmereffekt
Title (fr)
Méthode et appareil de traitement d'images vidéo, en particulier pour la réduction du scintillement de grande surface
Publication
Application
Priority
- EP 99115651 A 19990807
- EP 98115607 A 19980819
Abstract (en)
Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. Due to the larger size of PDPs, with larger viewing angle the large area flicker effect will become more serious in the future, in particular when handling 50Hz video standards. This invention proposes a different sub-field organisation, with different coding, which reduces large area flicker artefact, and which is characterised by: 1. Grouping of sub-fields (SF) in 2 sub-field groups (G1, G2), of similar structure. 2. The 2 sub-field groups (G1, G2) are identical in terms of the most significant sub-fields (SF) and different in terms of the least significant sub-fields (SF). 3. A sub-field coding process that distributes luminance weight symmetrically over the 2 sub-field groups (G1, G2) so as to minimise the 50Hz large area flicker luminance component. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
G09G 3/2029 (2013.01); G09G 3/2033 (2013.01); G09G 3/204 (2013.01); G09G 3/28 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/0266 (2013.01)
Citation (applicant)
- US 5187578 A 19930216 - KOHGAMI AKIHIKO [JP], et al
- JP H05127612 A 19930525 - JAPAN BROADCASTING CORP, et al
Citation (search report)
- [X] US 5187578 A 19930216 - KOHGAMI AKIHIKO [JP], et al
- [X] EP 0774745 A2 19970521 - MATSUSHITA ELECTRONICS CORP [JP]
- [X] EP 0838799 A1 19980429 - NEC CORP [JP]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99115651 A 19990807