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    • 72. 发明授权
    • Method and apparatus for compressing video in a manner characteristic of
photographic film
    • 以摄影胶片特征的方式压缩视频的方法和装置
    • US5646750A
    • 1997-07-08
    • US135269
    • 1993-10-12
    • David C. Collier
    • David C. Collier
    • G03B27/73H04N1/407H04N1/60H04N1/64H04N5/253H04N5/262H04N9/11H04N9/64H04N1/46
    • H04N1/407H04N1/6094H04N1/64H04N5/253H04N5/262H04N9/64H04N9/11
    • A method and system for compressing video in a manner characteristic of photographic film compression. One embodiment of the invention is a video camera including circuitry for compressing the raw video signals generated thereby to introduce film-like compression characteristics thereto. Such video camera preferably includes controls allowing smooth, gradual, film-like compression of video image data recorded thereby, in response to user variation of no more than a small number of compression parameters. In other embodiments, the invention is a video post-production editing system which performs film-like compression on an analog or digital video signal. Such compression can be performed to match the dynamic range of a first, film-derived video segment to that of a second, non-film-derived video segment. Preferably, the invention implements film-like compression digitally, by employing digital circuitry. Typically, such digital circuitry digitizes an analog video signal to be compressed, then transforms the digitized pixels using a look-up table, and finally converts the transformed pixels to an analog compressed video signal. Each color component of a color video signal can be separately digitized, and digital compression can be separately performed on each stream of digitized color component data in accordance with the invention. Other embodiments (for processing a stream of digital video data) need not perform analog-to-digital or digital-to-analog conversion. The invention can alternatively be implemented as an analog circuit for processing an analog video signal.
    • 一种用于以摄影胶片压缩特性的方式压缩视频的方法和系统。 本发明的一个实施例是一种视频摄像机,其包括用于压缩由此产生的原始视频信号以将薄膜状压缩特性引入其中的电路。 这样的摄像机优选地包括响应于不超过少量压缩参数的用户变化而允许对其记录的视频图像数据进行平滑,逐渐,电影样压缩的控制。 在其他实施例中,本发明是对模拟或数字视频信号执行电影式压缩的视频后期制作编辑系统。 可以执行这种压缩以将第一,电影衍生的视频段的动态范围与第二非电影导出的视频段的动态范围相匹配。 优选地,本发明通过采用数字电路来数字地实现胶片状压缩。 通常,这样的数字电路将要压缩的模拟视频信号数字化,然后使用查找表对数字化像素进行变换,最后将变换的像素转换为模拟压缩视频信号。 彩色视频信号的每个颜色分量可以被单独数字化,并且可以根据本发明对数字化彩色分量数据的每个流分别执行数字压缩。 其他实施例(用于处理数字视频数据流)不需要执行模数转换或数模转换。 本发明可替代地被实现为用于处理模拟视频信号的模拟电路。
    • 76. 发明授权
    • Motion picture film composition method
    • 电影胶片组合方法
    • US5563668A
    • 1996-10-08
    • US773963
    • 1991-12-18
    • Yoshio OzakiJohn GaltTomio Omata
    • Yoshio OzakiJohn GaltTomio Omata
    • G03B15/08H04N5/253H04N5/272A63J5/00G03B19/18
    • H04N5/253G03B15/08
    • A motion picture film composition method can be provided in which when a first motion picture film on which a first picture is imaged and a second motion picture on which a second picture is imaged are combined, the first motion picture film is converted into a video signal and processed in accordance with predetermined video signal processing to form an intermediate film and a mask film necessary for film composition, and a latent image obtained by superposing the intermediate film and the mask film and another latent image obtained by superposing the second picture film and the mask film are imaged for double exposure to combine the first motion picture film and the second motion picture film with high accuracy so that a combined motion picture film in which the second picture is superposed on the first picture can be made easily.
    • PCT No.PCT / JP91 / 00342 Sec。 371 1991年12月18日第 102(e)1991年12月18日PCT PCT 1991年3月13日PCT。 公开号WO91 / 14337 日期1991年9月19日可以提供一种电影胶片组合方法,其中当组合有第一影像成像的第一动画影像和其上成像第二画面的第二动画时,第一动画影片 转换为视频信号,并根据预定的视频信号处理进行处理,以形成膜成分所需的中间膜和掩模膜,以及通过叠加中间膜和掩模膜获得的潜像和通过叠加 第二图像胶片和掩模胶片被成像以进行双重曝光,以高精度组合第一电影胶片和第二动画影像胶片,从而可以容易地制作其中第二图像叠加在第一图像上的组合电影胶片 。
    • 79. 发明授权
    • Illumination control system for a film scanner
    • 电影扫描仪照明控制系统
    • US5528288A
    • 1996-06-18
    • US312162
    • 1994-09-26
    • Richard J. SandorSteven SitterDrew D. SummersAndrew F. KurtzCharles P. Divito
    • Richard J. SandorSteven SitterDrew D. SummersAndrew F. KurtzCharles P. Divito
    • H04N5/253
    • H04N5/253
    • In an illumination system for a film telecine scanner of the type adapted to provide a line of illumination on the image frames of a film which is supported for movement in a film gate of the scanner, an improved light control system for adjusting the amount of light that is delivered from a light source to an integrating cylinder to take into account fluctuations in intensity of the light source and desired intensity changes in the line of illumination upon a change of scene in the image frames of the film as the film is being scanned. The light control system comprises an aperture defining mechanism, a position servo regulator that maintains the aperture at a desired aperture opening despite disturbances tending to change the aperture between aperture changes, and an intensity servo regulator that takes into account the lamp intensity in resetting the aperture to a new position in response to a commanded light intensity related to a scene change, whereby aperture changes may be effected within the time of scanning a single image frame. The aperture defining mechanism employs first and second movable blades placed at a location in the optical path and movable between a full open aperture position outside the optical path and to one of a plurality of stopped down aperture defining positions interrupting the optical path and the resulting illumination line intensity in the course of scanning a single image frame.
    • 在一种用于胶片电视电影扫描器的照明系统中,适用于在被支持用于在扫描仪的胶片门中移动的胶片的图像帧上提供一列照明线,该改进的光控制系统用于调节光量 其被从光源传送到积分圆筒,以考虑当光线被扫描时胶片的图像帧中的场景变化时光源的强度的变化和照明线中的期望的强度变化。 光控制系统包括孔限定机构,位置伺服调节器,其将孔径保持在期望的孔径开口,尽管倾向于改变孔径变化之间的孔径,以及强度伺服调节器,其考虑了在重新设定孔径时的灯强度 响应于与场景变化相关的指令光强度而到新的位置,由此可以在扫描单个图像帧的时间内进行光圈改变。 孔限定机构使用放置在光路中的位置处的第一和第二可动刀片,并且可在光路外部的完全打开的孔径位置与中断光路的多个停止向下孔径限定位置之一之间移动,并且产生的照明 在扫描单个图像帧的过程中的线强度。