Method and apparatus for improving signal to noise ratio in a telecine
machine
    1.
    发明授权
    Method and apparatus for improving signal to noise ratio in a telecine machine 失效
    用于提高电视电影机中信噪比的方法和装置

    公开(公告)号:US5018019A

    公开(公告)日:1991-05-21

    申请号:US422342

    申请日:1989-10-16

    摘要: A method and apparatus is disclosed for operating CCD sensors of a telecine machine at full well potential during a conversion mode of operation and at 1/2 full well potential during shuttle mode operations. The disclosed method and apparatus optimize the signal-to-noise S/N ratio during the conversion mode of operation.

    摘要翻译: 公开了一种方法和装置,用于在转换操作模式期间操作具有全阱电位的电视电影机的CCD传感器,并且在穿梭模式操作期间以1/2全阱电位操作。 所公开的方法和装置在转换操作模式期间优化信噪比S / N比。

    Motion picture telecine balanced for negative scanning
    2.
    发明授权
    Motion picture telecine balanced for negative scanning 失效
    电影电视电影平衡负扫描

    公开(公告)号:US5049984A

    公开(公告)日:1991-09-17

    申请号:US406407

    申请日:1989-09-12

    IPC分类号: H04N5/253 H04N9/09 H04N9/11

    CPC分类号: H04N9/11

    摘要: A motion picture telecine scanner interposes a motion picture negative or print film (10) in an optical light path (12) between a light source (14) and a pickup stage (16) that develops a plurality of separate color output signals (R, G, B). By balancing the scanner so that the pickup stage provides substantially equivalent output levels in the respective colors for color transmissions substantially equivalent to like transmissions through the base density of a negative film, substantial signal-to-noise performance is realized during negative scanning. The base density is provided during a calibration mode by an optical filter (44) that is inserted into the light path with the motion picture film removed. In addition, the optical filter (44) is kept in the light path (12) during motion picture print scanning without any loss in signal-to-noise performance.

    摘要翻译: 运动图像电视电影扫描仪将动态影像负片或印刷胶片(10)插入在光源(14)和拾取台(16)之间的光学光路(12)中,所述光源(14)与拾取台(16)之间形成多个分离的彩色输出信号 G,B)。 通过平衡扫描仪,使得拾取台在各自颜色中提供基本相当于通过底片的基本密度的类似传输的颜色传输的基本上相等的输出电平,在负扫描期间实现了实质的信噪比性能。 在校准模式期间,通过移除了电影胶片插入到光路中的滤光器(44)提供基底密度。 此外,在运动图像打印扫描期间,滤光器(44)保持在光路(12)中,而没有信噪比性能的任何损失。

    High-speed CCD sensor mounting system with improved signal to noise
operation and thermal contact
    3.
    发明授权
    High-speed CCD sensor mounting system with improved signal to noise operation and thermal contact 失效
    高速CCD传感器安装系统,具有改进的信噪比操作和热接触

    公开(公告)号:US5043845A

    公开(公告)日:1991-08-27

    申请号:US422183

    申请日:1989-10-16

    摘要: The present image sensor mounting system is particularly adapted to the mounting of a linear sensor array, of the type having a transparent window on a front surface and a thermal and electrically conductive back surface. The system provides superior electrical and thermal transfer characteristics. A heat sink having at least one flat surface is positioned to make thermal contact with the back surface of the image sensor. A multilayer circuit board having layers of conductive material separated by layers of insulating material and having an opening therethrough sufficient in size to accept the heat sink provides the system support. A metal plating extends from one surface of the board through the opening in the board to the opposite surface of the board with selected ones of the layers of conductive material making electrical contact with the metal plating. The heat sink is mounted in the multilayer circuit board opening in thermal and electrical contact with the metal plating. A layer of thermal and electrically conductive grease is layered between the at least one surface of the heat sink and the conductive back surface of the linear sensor array.

    摘要翻译: 本发明的图像传感器安装系统特别适用于在前表面上具有透明窗口的类型的线性传感器阵列的安装以及导热和导电的背面。 该系统提供卓越的电和热传递特性。 具有至少一个平坦表面的散热器被定位成与图像传感器的后表面进行热接触。 具有由绝缘材料层隔开并具有足够尺寸的开口以接纳散热器的导电材料层的多层电路板提供了系统支撑。 金属电镀从板的一个表面延伸穿过板中的开口到板的相对表面,其中选定的导电材料层与金属电镀电接触。 散热器安装在多层电路板开口中,与金属电镀层进行热电接触。 一层热导电润滑脂层叠在散热片的至少一个表面和线性传感器阵列的导电后表面之间。

    Telecine scanning apparatus with spectrally-shifted sensitivities
responsive to negative or print film dyes
    5.
    发明授权
    Telecine scanning apparatus with spectrally-shifted sensitivities responsive to negative or print film dyes 失效
    电影电影扫描仪具有响应于负片或印刷胶片染料的光谱移动灵敏度

    公开(公告)号:US5003379A

    公开(公告)日:1991-03-26

    申请号:US422328

    申请日:1989-10-16

    IPC分类号: H04N9/11

    CPC分类号: H04N9/11

    摘要: A telecine scanner is selectively conformed to evaluate the dye densities characteristic of either negative or print film. The film is interposed in a light path between a light source and a pickup stage that develops a plurality of color output signals from the light passing through the film. Color channel filters included in the pickup stage have spectral passbands in the respective colors that are broad enough to include the spectral dye densities of both negative and print materials. The scanner sensitivity is further limited to a particular film material by inserting an appropriate shaping filter set into the light path, preferably between the light source and the film, for conforming the peak sensitivity of at least one of the passbands to the peak spectral density of the corresponding dye of the particular film material.

    摘要翻译: 选择性地符合电视电影扫描仪以评估阴性或印刷膜的染料密度特性。 该胶片介于光源和拾取台之间的光路上,该光源和拾取台从通过胶片的光产生多个彩色输出信号。 包括在拾取台中的彩色通道滤光片具有各自颜色的光谱通带,其宽度足以包括负片和印刷材料的光谱染料密度。 通过将适当的整形滤波器组插入到光路中,优选地在光源和膜之间,扫描仪的灵敏度进一步限于特定的薄膜材料,以使至少一个通带的峰值灵敏度达到峰值频谱密度 相应的特定薄膜材料的染料。