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1.发明授权Still video camera having effective imager sensitivity optimized for electronic preview 失效具有针对电子预览优化的有效成像器灵敏度的静态摄像机
公开(公告)号：US4780766A
公开(公告)日：1988-10-25
申请号：US56613
申请日：1987-05-29
申请人： Thomas C. Nutting
发明人： Thomas C. Nutting
CPC分类号： H04N5/23212 , H04N5/2352
摘要： The control computer of a still video camera provides discrete video gain adjustments to the signal processing section during preview operation of an electronic viewfinder. Because exposure time is fixed for preview, and depth of field can be dramatically larger than for still recording, focusing discrepancies can arise between the viewfinder display and the subsequent still recording. This is true especially as light levels are increasing. Discretely varying the video gain has the effect of discretely varying the effective exposure value at the plane of the image sensor. Thus, by lowering video gain during preview for high light levels and concomitantly reducing the exposure value, the viewfinder aperture is driven further open to a value more closely matching the still aperture. As a large aperture means reduced depth of field, focusing errors are reduced.
摘要翻译： 静止摄像机的控制计算机在电子取景器的预览操作期间向信号处理部分提供离散视频增益调整。 因为曝光时间是固定的预览，并且景深可以比静态记录显着更大，取景器显示和随后的静止录制之间可能会产生聚焦差异。 这是真的，特别是随着光线水平的增加。 离散地改变视频增益具有离散地改变图像传感器平面处的有效曝光值的效果。 因此，通过在预览期间降低高亮度水平的视频增益并伴随地降低曝光值，取景器孔径被进一步驱动到更接近于静止孔径的值。 由于大光圈意味着景深减小，聚焦误差降低。
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2.发明授权
公开(公告)号：US4736261A
公开(公告)日：1988-04-05
申请号：US764468
申请日：1985-08-12
申请人： Thomas C. Nutting
发明人： Thomas C. Nutting
CPC分类号： H04N1/2137 , H04N1/2112 , H04N3/155 , H04N2101/00 , Y10S358/906
摘要： A full frame solid state imager is disclosed having an input register utilized to effect field recirculation whereby the imager itself is utilized as a storage device to store the second field of the frame until the readout of the first field has been effected. The signal produced from the imager is a field sequential signal.
摘要翻译： 公开了一种全帧固态成像器，其具有用于实现现场再循环的输入寄存器，由此成像器本身被用作存储设备以存储帧的第二场，直到已经实现了第一场的读出。 从成像器产生的信号是场顺序信号。
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公开(公告)号：US4660092A
公开(公告)日：1987-04-21
申请号：US843536
申请日：1986-03-25
申请人： Thomas C. Nutting
发明人： Thomas C. Nutting
CPC分类号： H04N5/23212 , H04N5/23293
摘要： A focusing aid for a video camera alleviates manual focusing uncertainty due to difficulty in rendering sharply defined features in an electronic viewfinder. The focusing aid impacts a central viewing area by modifying the picture contrast, a visual substitute for a bandwidth-limited rendition of picture sharpness. A high frequency component of a luminance signal generated by the camera is converted into a dc control signal having an amplitude that varies with high frequency content. By using the control signal to adjust the gain applied to the luminance signal, the contrast of the picture formed in the central area is accentuated according to the degree of focus.
摘要翻译： 用于摄像机的聚焦辅助装置由于难以在电子取景器中呈现锐利定义的特征而减轻手动对焦的不确定性。 聚焦辅助工具通过修改图像对比度来影响中央观看区域，可视化替代带宽限制的图像锐度渲染。 由相机产生的亮度信号的高频分量被转换为具有随着高频内容而变化的振幅的直流控制信号。 通过使用控制信号来调整施加到亮度信号的增益，根据聚焦程度增强在中心区域中形成的图像的对比度。
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公开(公告)号：US4922333A
公开(公告)日：1990-05-01
申请号：US284647
申请日：1988-12-15
摘要： Video copying apparatus generates a color sequential video signal from originals having different spectral characteristics, such as photographic slides and negatives. The apparatus includes a color filter wheel with a plurality of color filters that are sequentially interposed into the optical path between a camera and the original. By providing separate red filters in the filter wheel, the spectral pass bands of the red filters can be matched to the separate and distinctive red spectral responses of a slide or a negative. The output color video signal is obtained from a progression of filtered image signals generated by the camera according to the type of original. In one embodiment, a succession of video fields including red image signals from both red filters is continuously applied to a framestore and the selection of the appropriate red signal is made by storing only the color video signals corresponding to the desired type of original.
摘要翻译： 视频复制设备从具有不同光谱特征的原稿（例如照相幻灯片和底片）生成彩色顺序视频信号。 该装置包括具有多个滤色器的滤色轮，该多个滤色器依次插入相机和原稿之间的光路中。 通过在滤光轮中提供分开的红色滤光片，红色滤光片的光谱通过频带可以与幻灯片或阴性的独立和独特的红色光谱响应匹配。 输出彩色视频信号是根据照相机根据原稿类型生成的滤波图像信号的进程获得的。 在一个实施例中，包括来自红色滤色器的红色图像信号的一系列视频场连续地应用于帧存储，并且通过只存储对应于期望类型的原始图像的彩色视频信号来进行适当的红色信号的选择。
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5.发明授权Apparatus for reproducing recorded interleaved video fields as a field sequential video signal 失效用于再现记录的交错视频场作为场顺序视频信号的装置
公开(公告)号：US4752838A
公开(公告)日：1988-06-21
申请号：US795603
申请日：1985-11-06
申请人： Thomas C. Nutting
发明人： Thomas C. Nutting
摘要： An apparatus for reproducing recorded interleaved video fields as a field sequential video signal. The interleaved video fields are recorded on a magnetic disc at one rotary speed and reproduced at a second rotary speed utilizing appropriate switching and two dual frequency CCD delay lines to produce a field sequential video signal.
摘要翻译： 一种用于再现记录的交错视频场作为场顺序视频信号的装置。 交错的视频场以一个旋转速度记录在磁盘上，并利用适当的切换和两个双频CCD延迟线以第二旋转速度再现以产生场顺序视频信号。
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公开(公告)号：US4660091A
公开(公告)日：1987-04-21
申请号：US776539
申请日：1985-09-16
申请人： Thomas C. Nutting
发明人： Thomas C. Nutting
摘要： The average video level of a video camera is corrected for film-to-video conversion by having a film aperture plate with a light-passing opening that is slightly enlarged with respect to the image area of the film. Non-image light passes through a peripheral region of the film, as defined by the enlarged opening, and strikes a part of the camera sensor not receiving image-wise illumination. By enlarging the aperture plate opening just enough that the video signal from the non-imaged part of the sensor approximates a desired average video level, the automatic video level correction performed by the camera will pertain only to the image. The aperture plate is part of a film gate that is rotatably mounted so that the film may be supported in either a "horizontal" or "vertical" orientation, depending on how the film image was initially exposed.
摘要翻译： 摄像机的平均视频电平通过具有相对于胶片的图像区域略微扩大的通光开口的胶片光圈板而进行胶片到视频转换的校正。 非图像光通过由放大的开口限定的胶片的周边区域，并且撞击照相机传感器的一部分不接受图像照明。 通过扩大光圈板开口刚好足以使来自传感器的非成像部分的视频信号接近期望的平均视频电平，由相机执行的自动视频电平校正将仅适用于图像。 孔板是可旋转地安装的膜门的一部分，使得膜可以以“水平”或“垂直”取向被支撑，这取决于胶片图像最初暴露的方式。
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7.发明授权Modified synchronization in apparatus for recording and reproducing single field non-interlaced images 失效用于记录和再现单场非隔行扫描图像的装置中的修改同步
公开(公告)号：US4647987A
公开(公告)日：1987-03-03
申请号：US709260
申请日：1985-03-07
申请人： Thomas C. Nutting
发明人： Thomas C. Nutting
CPC分类号： H04N1/2108 , G11B19/28 , H04N1/2112 , H04N2101/00 , H04N2201/0077 , Y10S358/906
摘要： A magnetic disk recording apparatus is disclosed having a synchronization modification circuit utilized to control the rotational speed of a magnetic disc, whereby an integer number of horizontal lines of a standard video signal are recorded on one annular track of the magnetic disc. When the recorded video signal is repeatedly reproduced, a non-interlaced single field "still" video image is displayed on a standard monitor adapted to display an interlaced image.
摘要翻译： 公开了一种磁盘记录装置，其具有用于控制磁盘的转速的同步修改电路，由此将标准视频信号的整数水平线记录在磁盘的一个环形轨道上。 当记录的视频信号被重复地再现时，非间行单字段“静止”视频图像被显示在适于显示隔行图像的标准监视器上。
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8.发明授权Dual access frame store for field or frame playback in a video disk player 失效双路存取帧存储，用于视频盘播放器中的场或帧回放
公开(公告)号：US4816929A
公开(公告)日：1989-03-28
申请号：US802919
申请日：1985-11-29
CPC分类号： H04N5/937
摘要： A video player, specially adapted to accommodate "mixed field and frame" recordings, incorporates a frame store for playing back still pictures recorded on a magnetic disk as either single field or dual field (full frame) video signals. A repetitive, interlaced output signal is taken from the frame store either directly or through an interpolation circuit. While interpolation benefits single field playback, it is particularly useful for incrementally achieving full frame playback: An interpolated frame is provided for displaying a single field recording and for displaying a still picture before--and until--the second frame of a full frame recording is fully available from the frame store. Once both fields of the picture are stored in the frame store, then and only then is the disk drive motor turned off, albeit that an interpolated frame is displayed before this occurs.
摘要翻译： 特别适用于适应“混合场和帧”记录的视频播放器包括用于将记录在磁盘上的静态图像作为单场或双场（全帧）视频信号的帧存储。 直接或通过插值电路从帧存储器中取出重复的隔行输出信号。 虽然插值有利于单场播放，但是对于递增地实现全帧播放特别有用：提供内插帧以用于显示单场记录并在全帧记录的第二帧完全到达之前显示静止图像 可从框架商店获取。 一旦图像的两个场都存储在帧存储器中，则磁盘驱动器电机才被关闭，尽管在此之前显示内插帧。
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公开(公告)号：US4805037A
公开(公告)日：1989-02-14
申请号：US109159
申请日：1987-10-15
IPC分类号： H04N5/225 , H04N5/228 , H04N5/235 , H04N5/238 , H04N5/335 , H04N5/372 , H04N5/77 , H04N7/18 , H04N5/76
CPC分类号： H04N5/2354 , H04N5/225 , H04N5/335 , H04N5/77 , H04N7/188
摘要： An image recording system is provided including a conventional photographic film camera, an electronic video camera, and an electronic flash. Synchronizing apparatus is provided such that, responsive to the actuation of the film camera shutter by a human operator, the flash is substantially immediately triggered to illuminate a subject. Responsive to the single flash illumination, the synchronizing apparatus synchronizes the operation of the video camera to the film camera such that the film camera captures a photographic image of the subject, and the electronic video camera captures a full frame image of a substantially identical view of the subject as two consecutive video fields. The video camera is further synchronized such that the flash illumination is substantially entirely and equally distributed between the two fields of video information. The video camera normally operates in a movie format according to NTSC standards. The capturing of the video image is accomplished by inhibiting, during the flash illumination, any transfer of charge from photosites to shift registers in a video imager contained in the video camera. Upon termination of the flash illumination, the next two video fields are transferred to provide a full video frame of the subject of interest.
摘要翻译： 提供了包括传统摄影胶片相机，电子摄像机和电子闪光灯的图像记录系统。 提供同步装置，使得响应于人类操作者对胶片相机快门的致动，基本上立即触发闪光以照亮被摄体。 响应于单次闪光照明，同步装置将摄像机的操作与胶片相机同步，使得胶片相机捕获被摄体的摄影图像，并且电子摄像机捕获基本相同视图的全帧图像 该主题作为两个连续的视频领域。 摄像机进一步同步，使得闪光照明基本上完全均匀地分布在两个视频信息之间。 摄像机通常根据NTSC标准以电影格式运行。 视频图像的拍摄是通过在闪光照明期间禁止从照相机向包含在摄像机中的视频成像器中的移位寄存器的任何电荷的转移来实现的。 在闪光灯照射结束时，接下来的两个视频场被传送以提供感兴趣的对象的完整视频帧。
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10.发明授权Still video camera with common circuit for color balance and exposure control 失效静态摄像机具有通用电路，用于色彩平衡和曝光控制
公开(公告)号：US4805010A
公开(公告)日：1989-02-14
申请号：US56628
申请日：1987-05-29
CPC分类号： H04N5/2352 , H04N9/735
摘要： A video still camera includes a common integrating circuit for measuring light level in relation to both color balance and exposure control. An exposure photodiode generates an exposure signal from a small sample of image light diverted from the optical section of the camera. Broadly oriented red, green and blue photodiodes generate three color balance signals corresponding to the color characteristics of the illuminant. The photodiodes are selectively multiplexed into the input of the integrating circuit for the measurements. In one embodiment, the exposure photodiode remains connected to the integrating circuit for exposure measurement. The color balance measurement is unaffected because the small photocurrent from the exposure photodiode is effectively swamped by the much larger color photocurrent from a multiplexed color photodiode.
摘要翻译： 视频静态照相机包括用于相对于颜色平衡和曝光控制来测量光级的公共积分电路。 曝光光电二极管从相机的光学部分转移的图像光的小样本产生曝光信号。 广泛定向的红色，绿色和蓝色光电二极管产生对应于光源的颜色特性的三种色彩平衡信号。 光电二极管被选择性地多路复用到用于测量的积分电路的输入端。 在一个实施例中，曝光光电二极管保持连接到用于曝光测量的积分电路。 颜色平衡测量不受影响，因为来自曝光光电二极管的小的光电流被来自复用的彩色光电二极管的更大的彩色光电流有效地淹没。
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