公开(公告)号：WO1993006520A1

公开(公告)日：1993-04-01

申请号：PCT/CA1992000397

申请日：1992-09-14

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  GIBBON, Michael, A. ,  MARTINDALE, David, M.

IPC: G03B01/18

CPC classification number: G03B1/18

Abstract: A motion picture which includes a plurality of scenes is shot by selecting at least two different film frame rates for recording the scenes, predetermining one of said rates for each scene and recording each scene on film at the film frame rate that was predetermined for that scene. The motion picture is subsequently displayed by projecting the film using at least one projector which is capable of being operated at least two different film projection rates. Projection is controlled so that the film is continuously projected while varying the film projection rate to cause each scene to be projected at a frame rate corresponding to the frame rate at which the scene was recorded. The projector may be a rolling loop projector having a rotor provided with an even number of gaps in which film loops are formed, and the variation in frame rate achieved by feeding film into all of the gaps or alternate ones only of the gaps, at constant rotor speed.

Abstract translation: 通过选择用于记录场景的至少两个不同的胶片帧速率来拍摄包括多个场景的动态图像，预先确定每个场景的所述速率中的一个，并以对该场景预定的胶片帧速率将每个场景记录在电影上 。 随后通过使用能够被操作至少两种不同胶片投影率的至少一个投影仪来投影胶片来显示动画。 控制投影，使​​得胶片在改变胶片投射率的同时连续地投影，以使每个场景以与记录场景的帧速率相对应的帧速率投影。 投影仪可以是具有转子的滚动环投影机，该转子设置有偶数个间隙，其中形成有胶片环，并且通过将膜馈送到所有间隙或仅间隙的间隔而以恒定 转子转速。