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1. 发明授权

US06504992B1 Video signal reproducing apparatus and video signal display apparatus 失效
标题翻译：视频信号再现装置和视频信号显示装置
公开(公告)号：US06504992B1
公开(公告)日：2003-01-07
申请号：US09305451
申请日：1999-05-06
申请人： Kouji Minabe , Masayuki Kijima , Hideo Nishijima , Teruo Hoshi , Takashi Tsujio
发明人： Kouji Minabe , Masayuki Kijima , Hideo Nishijima , Teruo Hoshi , Takashi Tsujio
IPC分类号： H04N591
CPC分类号： H04N5/783 , Y10S358/906
摘要： When a video signal reproduced by a helical scan type video signal reproducing apparatus is displayed on the screen of a liquid crystal matrix circuit, a change in brightness on the screen is eliminated in a mode for displaying a trick reproduced image such as a noiseless search image, a still image or the like with respect to a mode for displaying a normally reproduced image, thus providing the user with displayed images causing a less feeling of strangeness. During normal reproduction, where a video signal is continuously written into a liquid crystal display circuit, the brightness of the liquid crystal display circuit is controlled based on the value in a reference brightness register set by the user. During trick reproduction, where a video signal is discontinuously written into the liquid crystal display circuit, the liquid crystal display circuit is controlled to display an image relatively darker than the value in the reference brightness register. This eliminates the difference in brightness between a normally reproduced image and a trick reproduced image, thereby allowing the user to have a less feeling of strangeness.
摘要翻译：当在液晶矩阵电路的屏幕上显示由螺旋扫描型视频信号再现装置再现的视频信号时，在用于显示诸如无噪声搜索图像的特技再现图像的模式中，屏幕上的亮度变化被消除，静止图像等，用于显示正常再现图像的模式，从而为用户提供显示较少的陌生感的显示图像。在将视频信号连续地写入液晶显示电路的正常再现期间，基于由用户设定的参考亮度寄存器中的值来控制液晶显示电路的亮度。在将视频信号不连续地写入液晶显示电路的特技再现期间，液晶显示电路被控制以显示比参考亮度寄存器中的值更暗的图像。这消除了正常再现图像和特技再现图像之间的亮度差异，从而允许用户具有较少的陌生感。

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