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2. 发明授权

US4887252A Solid-state color television camera with color and luminance signal correction 失效
标题翻译：固态彩色电视摄像机，具有彩色和亮度信号校正功能
公开(公告)号：US4887252A
公开(公告)日：1989-12-12
申请号：US15509
申请日：1987-02-17
申请人： Yasumi Miyakawa , Tatsuki Ide
发明人： Yasumi Miyakawa , Tatsuki Ide
IPC分类号： H04N9/04
CPC分类号： H04N9/045
摘要： By using a solid state imaging element which simultaneously read out signals for two neighboring horizontal lines in which modulated chrominance signals differ from each other by 180.degree. of phase using horizontal scanning, the magnitude of the vertical correlation from the simultaneously read out two line signals are detected. Noise normally produced by the vertical correlation error of the luminance signal and chrominance signal are removed. Various embodiments are provided responsive to different problems. An interference signal at 1/3f can be decreased by compensating the horizontal aperture responsive to the vertical correlation of the image. Improvements are described for use when the color difference signals have a poor level difference, or when the vertical correlation of a signal is poor, or in fact does not exist at all. The horizontal correlation of a signal can also be used to reduce noise from various sources. The color difference signal can also be used to find the vertical correlation of the objective image. Differences between horizontally adjacent chrominance signals can also be obtained. Improvements are described for use when the objective image has a high color saturation, or when the luminance signal is excessively high. A structure for improving unsatisfactory vertical resolution is also described.
摘要翻译：通过使用固态成像元件，其同时读取两个相邻水平线的信号，其中调制的色度信号使用水平扫描彼此相差180°，来自同时读出的两行信号的垂直相关的幅度为检测到。消除通常由亮度信号和色度信号的垂直相关误差产生的噪声。针对不同的问题提供了各种实施例。 1 / 3f的干扰信号可以通过响应于图像的垂直相关性来补偿水平光圈来减小。描述当色差信号具有差的电平差时，或当信号的垂直相关性差或实际上根本不存在时，使用改进。信号的水平相关也可以用于减少来自各种信号源的噪声。色差信号也可以用于找到客观图像的垂直相关性。也可以获得水平相邻色度信号之间的差异。描述当目标图像具有高色彩饱和度时或者当亮度信号过高时使用的改进。还描述了用于改善不令人满意的垂直分辨率的结构。

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