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Digital video camera with frequency converter and D/D converter for color- difference signals

机译:带有变频器和D / D转换器的数字摄像机,用于色差信号

摘要

In order to achieve a digital video camera apparatus which decreases the number of components and facilitates connection with a digital VTR, a luminance signal Y and a color signal C input from external input terminals (110, 118) are converted into digital signals by A/D converters (136, 138) by sampling these signals respectively at the sampling frequency of a digital recording/reproduction device (113) and a frequency four times the subcarrier frequency, the digital signals are selected by selectors (135, 137) together with signals Y and C from a digital signal processing circuit (106), and the selected signals are supplied to the digital signal recording/reproduction device (113). Color- difference signals are supplied after their frequency is converted into the sampling frequency of the digital signal recording/reproduction device (113) by frequency converters (139a, 139b).
机译:为了实现减少部件数量并便于与数字VTR连接的数字摄像机设备,从外部输入端子(110、118)输入的亮度信号Y和颜色信号C通过A /转换为数字信号。 D转换器(136、138)通过分别以数字记录/再现设备(113)的采样频率和四倍于子载波频率的频率采样这些信号,由选择器(135、137)与信号一起选择数字信号。来自数字信号处理电路(106)的Y和C,以及所选择的信号被提供给数字信号记录/再现设备(113)。色差信号的频率在通过变频器(139a,139b)转换为数字信号记录/再现设备(113)的采样频率后提供。

著录项

  • 公开/公告号US5572254A

    专利类型

  • 公开/公告日1996-11-05

    原文格式PDF

  • 申请/专利权人 CANON KABUSHIKI KAISHA;

    申请/专利号US19950485011

  • 发明设计人 NORIHIRO KAWAHARA;

    申请日1995-06-07

  • 分类号H04N5/228;

  • 国家 US

  • 入库时间 2022-08-22 03:37:37

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