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    • 2. 发明授权
    • NTSC/PAL video signal conversion apparatus employing ITU-R BT.601 video
signal
    • 采用ITU-R BT.601视频信号的NTSC / PAL视频信号转换装置
    • US5640209A
    • 1997-06-17
    • US615127
    • 1996-03-14
    • Jin Hwan LeeChie Teuk AhnJoo Hong JeongSang Gyu Park
    • Jin Hwan LeeChie Teuk AhnJoo Hong JeongSang Gyu Park
    • H04N7/01
    • H04N7/0105
    • An NTSC/PAL video signal conversion apparatus employing a ITU-R BT.601 video signal, comprising a timing reference signal decoder for detecting a timing reference signal from external input data in response to an external clock signal, a counting circuit for performing a plurality of counting operations in response to output signals from the timing reference signal decoder and the external clock signal, a write address generator for generating a write address, a write enable signal and a chip enable signal in response to output signals from the counting circuit, a read address generator for generating a read address, a read enable signal and a chip enable signal in response to the output signals from the counting circuit, a first multiplexer for selecting one of the write address from the write address generator and the read address from the read address generator in response to the external clock signal, a first D flip-flop for latching the external input data, a memory for storing output data from the first D flip-flop, a second D flip-flop for latching output data from the memory, a timing reference signal generator for decoding the output signals from the counting circuit, and a second multiplexer for multiplexing an output signal from the timing reference signal generator and output data from the second D flip-flop.
    • 一种使用ITU-R BT.601视频信号的NTSC / PAL视频信号转换装置,包括用于响应于外部时钟信号从外部输入数据检测定时参考信号的定时参考信号解码器,用于执行多个 响应于来自定时参考信号解码器和外部时钟信号的输出信号的计数操作,用于响应于来自计数电路的输出信号产生写入地址的写入地址发生器,写入使能信号和芯片使能信号, 读取地址发生器,用于响应于来自计数电路的输出信号而产生读取地址,读取使能信号和芯片使能信号;第一多路复用器,用于从写入地址发生器中选择写入地址和从 读取地址生成器以响应于外部时钟信号,用于锁存外部输入数据的第一D触发器,用于存储ou的存储器 从第一D触发器输入数据,用于锁存来自存储器的输出数据的第二D触发器,用于对来自计数电路的输出信号进行解码的定时参考信号发生器,以及用于将来自 定时参考信号发生器和来自第二D触发器的输出数据。
    • 5. 发明授权
    • Film mode video sequence detector
    • 电影模式视频序列检测器
    • US5734420A
    • 1998-03-31
    • US572268
    • 1995-12-13
    • Young Sun LeeJin Hwan LeeYo Sung HoJoo Hong Jeong
    • Young Sun LeeJin Hwan LeeYo Sung HoJoo Hong Jeong
    • H04N5/87G06T9/00H04N5/253H04N5/92H04N7/01H04N19/00H04N19/129H04N19/134H04N19/142H04N19/157H04N19/162H04N19/196H04N19/85H04N19/87H04N7/18
    • H04N7/0115
    • A film mode video sequence detector for detecting video sequences converted from movie films in 30 Hz frame rate video resources comprises a video signal detecting means provided a mean of absolute difference (MAD) value of input video signal and a film mode condition generation signal considering a user threshold and still picture, making a decision whether the input signal is film mode, and transmitting the film mode condition generation signal, film mode departure signal, the threshold pass signal, and a clock which is generated on film mode condition; a condition generating means provided the MAD value and the condition generating signal from the video mode detecting means, making a decision whether the MAD value shows a pattern off film mode considering still picture, transmitting the film mode condition generating signal to the video signal detecting means; a mode converting means provided an input field decision signal, a screen transition generating signal, departure signal from video mode decision means, a threshold pass signal, and a generating film mode departure signal considering secreen transition; a video mode decision means film mode departure signal from the mode converting means, clock when the signal from the video signal detecting means is film mode; and a video mode decision means being provided a user threshold and a transmitting video mode generating signal.
    • 一种用于检测以30Hz帧速率视频资源从电影胶片转换的视频序列的胶片模式视频序列检测器,包括视频信号检测装置,其提供输入视频信号的绝对差值(MAD)值和考虑到 用户阈值和静止图像,判定输入信号是否为胶片模式,以及发送胶片模式条件生成信号,胶片模式偏离信号,阈值通过信号以及在胶片模式条件下产生的时钟; 条件产生装置提供来自视频模式检测装置的MAD值和条件产生信号,判定MAD值是否显示考虑静止图像的胶片模式,将胶片模式条件生成信号发送到视频信号检测装置 ; 模式转换装置提供输入场决定信号,画面转换产生信号,来自视频模式判定装置的出发信号,阈值通过信号和考虑到屏幕转换的生成影片模式离开信号; 视频模式决定是指来自模式转换装置的电影模式偏离信号,来自视频信号检测装置的信号是电影模式时的时钟; 并且为用户阈值和发送视频模式生成信号提供视频模式判定装置。