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    • 4. 发明授权
    • Film scanner with compensation for film shrinkage
    • 胶片扫描仪补偿膜收缩
    • US4054912A
    • 1977-10-18
    • US675590
    • 1976-04-09
    • John David MillwardJohn Wright
    • John David MillwardJohn Wright
    • H04N5/253H04N3/36H04N3/38H04N5/36
    • H04N3/38
    • The invention is concerned with a means of compensating for film shrinkage in a continuous film motion telecine apparatus. A measure of the film shrinkage is obtained by deriving a signal representing the angular speed of a roller in non-slipping contact with the film, the film being driven at a constant frame rate by, for example, a smooth capstan servo-controlled to maintain the constant frame rate. The roller whose angular speed is measured may be the drive capstan itself or a separate roller. The signal so derived is dependent on the film shrinkage and thus is used to automatically control a registration adjusting means to compensate for such shrinkage.
    • 本发明涉及一种在连续薄膜运动电视电影装置中补偿薄膜收缩的方法。 通过导出表示与膜非滑动接触的辊的角速度的信号来获得膜收缩的量度,膜通过例如伺服控制的平滑绞盘以恒定的帧速率驱动,以维持 恒定帧速率。 测量角速度的辊可以是驱动绞盘本身或单独的辊。 所得到的信号取决于膜收缩,因此用于自动控制配准调节装置以补偿这种收缩。
    • 9. 发明授权
    • Spatial light modulators
    • 空间光调制器
    • US5686939A
    • 1997-11-11
    • US50293
    • 1993-08-04
    • John David MillwardJohn Gillespie
    • John David MillwardJohn Gillespie
    • G09G3/20G09G3/34H04N5/202H04N5/74H04N5/76H04N9/31H04N9/69G09G5/10
    • G09G3/346H04N5/202H04N5/7458H04N9/312H04N9/3129H04N9/3164H04N9/3188G09G2300/08G09G2320/0276G09G3/2022G09G3/2037G09G3/2059H04N2005/7466H04N9/69
    • A spatial light modulator in the form of a deformable mirror device receives from a frame store data which has been formatted by a data formatter subsequent to gamma correction in a ROM look-up table. The DMD displays different light levels by being ON for selected periods of a series of durations 4, 8, 16, - - - , 1024 varying in proportion to a basic period multiplied by powers of two. The shortest duration 4 for which the DMD can be turned on is a multiple of the basic period, and the series includes additional durations 5, 6, and 7 in the series between the shortest displayable duration 4 and the next power of two 8. Durations 1, 2, and 3 of less than the shortest displayable duration can be displayed by adjusting the turn-on time of a proportion of the adjacent mirrors. The longest duration for which the mirror can be turned on can be employed twice.
    • PCT No.PCT / GB91 / 02032 Sec。 371日期:1993年8月4日 102(e)日期1993年8月4日PCT 1991年11月18日PCT PCT。 第WO92 / 09064号公报 日期:1992年5月29日可变形反射镜装置形式的空间光调制器从帧存储在ROM查找表中伽马校正之后由数据格式化器格式化的数据。 DMD通过在与基本周期乘以2的幂的比例变化的一系列持续时间4,8,16, - - - 1024的选定时段中为ON显示不同的光级。 可以打开DMD的最短持续时间4是基本周期的倍数,并且该系列包括在最短显示持续时间4和下一次功率之间的串联中的附加持续时间5,6和7.持续时间 可以通过调整相邻反射镜的一部分的开启时间来显示小于最短可显示持续时间的1,2和3。 反射镜可以打开的最长持续时间可以使用两次。