H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/01 (2006.01) G11B 27/031 (2006.01) H04N 5/262 (2006.01) H04N 5/92 (2006.01)
Patent
CA 2476207
When an image signal, which was picked up in a 24 frames/second image format and temporarily recorded on a temporary recording device, is read in a 60 fields/second image format, the image signal is subjected to a 2:3:2:3 pull-down conversion process so that it becomes possible to omit compressing/expanding processes. At this time, the reading operation is controlled on the basis of the figure of time codes so that the pull-down conversion system at the time of a joining image-pickup process is maintained. In this case, by properly switching controlling methods among a plurality of pull-down controlling methods, it is possible to achieve an image conversion system capable of providing an optimal image conversion process in accordance with desired image-pickup purposes and editing processes.
Selon l'invention, l'imagerie s'effectue dans un format vidéo 24p et une image est enregistrée temporairement dans un dispositif d'enregistrement temporaire. Lorsqu'un signal vidéo est lu dans un format vidéo 60i, une conversion d'adaptation 2:3:3:2 a lieu, de façon à réduire le traitement de compression/décompression. Ici, la lecture est commandée par l'utilisation d'un chiffre de codage temporel qui sert de référence, de façon à maintenir le processus de conversion d'adaptation au cours de l'imagerie conjointe. A cet effet, une pluralité de processus de commande d'adaptation sont commutés afin d'obtenir un dispositif de conversion vidéo permettant une conversion vidéo optimale conformément aux exigences d'imagerie et au procédé d'édition.
Okamoto Ichiro
Sakai Akihira
G. Ronald Bell & Associates
Matsushita Electric Industrial Co. Ltd.
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