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1. 发明授权

US5063437A Method and apparatus for processing a color video signal 失效
标题翻译：用于处理彩色视频信号的方法和装置
公开(公告)号：US5063437A
公开(公告)日：1991-11-05
申请号：US344402
申请日：1989-04-28
申请人： Hitoaki Owashi , Hiroyasu Ohtsubo , Masataka Sekiya , Kohji Minabe , Hideo Nishijima , Michio Masuda , Morito Rokuda
发明人： Hitoaki Owashi , Hiroyasu Ohtsubo , Masataka Sekiya , Kohji Minabe , Hideo Nishijima , Michio Masuda , Morito Rokuda
IPC分类号： H04N9/64 , H04N9/877
CPC分类号： H04N9/646 , H04N9/877 , Y10S348/91
摘要： This invention relates to a method and apparatus for processing a color video signal. The processing method separates an input composite color video signal into a luminance signal and chrominance signal, demodulates the separated chrominance signal into color difference signals, stores the separated luminance signal and color difference signals in a memory, reads out the luminance signal and color differnece signals in units of 1-field period from the memory, implements the extension or reduction of the field period length alternately for every certain number of fields in reading out the luminance signal and color difference signals from the memory thereby to fix the phase relation between a residual chrominance signal component in the luminance signal read out of the memory and a chrominance signal produced by modulating the color subcarrier with the color difference signals read out of the memory, implements an intended signal processing for the readout signals, modulates the color subcarrier with processed color difference signals to produce a chrominance signal, and mixes the chrominance signal with processed luminance signal to produce a composite color video signal.
摘要翻译：本发明涉及一种处理彩色视频信号的方法和装置。处理方法将输入的复合彩色视频信号分离为亮度信号和色度信号，将分离的色度信号解调为色差信号，将分离的亮度信号和色差信号存储在存储器中，读出亮度信号和色差信号以存储器的1场期间为单位，在从存储器中读出亮度信号和色差信号时，对于每一定数量的场交替地实现场周期长度的扩展或缩小，从而固定残留的相位关系从存储器中读出的亮度信号中的色度信号分量和通过从存储器读出的色差信号调制彩色副载波产生的色度信号，对读出的信号实现预期的信号处理，用经处理的颜色调制彩色副载波差分信号产生色度信号，以及将色度信号与经处理的亮度信号混合，产生复合彩色视频信号。

2. 发明授权

US4926361A Digital noise reducer 失效
标题翻译：数字降噪器
公开(公告)号：US4926361A
公开(公告)日：1990-05-15
申请号：US245208
申请日：1988-09-16
申请人： Hiroyasu Ohtsubo , Michio Masuda , Hideo Nishijima , Hitoaki Owashi , Masataka Sekiya , Kohji Minabe
发明人： Hiroyasu Ohtsubo , Michio Masuda , Hideo Nishijima , Hitoaki Owashi , Masataka Sekiya , Kohji Minabe
IPC分类号： H04N5/21
CPC分类号： H04N5/21
摘要： A digital noise reducer includes an addition circuit for adding a digital input video signal supplied at one input thereof and a signal supplied at the other input thereof and for outputting a resultant sum signal, a delay circuit for delaying the output signal of the addition circuit by an input unit period of the digital input video signal, a subtraction circuit supplied with the digital input video signal and an output signal of the delay circuit, the subtraction circuit forming and outputting a difference component signal for the digital input video signal and the output signal of the delay circuit, and a characteristic adjustment circuit for manipulating a signal characteristic of the difference component output of the subtraction circuit in accordance with the characteristic of the difference component signal outputted from the subtraction circuit and/or a characteristic of a digital output video signal outputted from the addition circuit and for outputting a resultant manipulated signal to the other input of the addition circuit.
摘要翻译：数字降噪器包括：加法电路，用于将在其一个输入处提供的数字输入视频信号和在其另一个输入端提供的信号相加，并输出结果和信号;延迟电路，用于将加法电路的输出信号延迟数字输入视频信号的输入单元周期，提供有数字输入视频信号的减法电路和延迟电路的输出信号，减法电路形成并输出用于数字输入视频信号和输出信号的差分分量信号以及用于根据从减法电路输出的差分分量信号的特性和/或数字输出视频信号的特性来操纵减法电路的差分分量输出的信号特性的特性调整电路从加法电路输出并输出合成操作 d向加法电路的另一个输入端发送信号。

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