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1. 发明授权

US3883685A Picture signal conversion system 失效
标题翻译：图像信号转换系统
公开(公告)号：US3883685A
公开(公告)日：1975-05-13
申请号：US37995073
申请日：1973-07-17
申请人： HITACHI LTD
发明人： YUMDE YASUFUMI , FURUHATA TAKASHI
IPC分类号： H04B1/66 , G11B20/08 , H04N5/917 , H04N7/00 , H04N7/08 , H04N7/081 , H04N7/12 , H04N19/00
CPC分类号： H04N7/12 , H04N5/917 , H04N7/002
摘要： A system for converting an analog picture signal of a wide band into a pulse train signal of a narrow band composed of means for sampling and storing a picture signal of at least one frame, means for reading the stored signal at each sample value at an arbitrary rate, and means for producing a train of pulses with pulse intervals proportional to the read out sample values can reduce the average transmission time because the entire time of the pulse train signal representing one frame of picture varies depending on the contents of the picture. A system for converting a pulse train signal of a narrow band into an analog picture signal of a wide band composed of means for producing a signal of sample amplitudes proportional to the pulse intervals of a supplied pulse train signal, and storing means in which the signal of sample amplitudes is written at each pulse of the pulse train signal and from which the picture signal is read out at the rate equal to the period of sampling the picture signal after the end of the writing of a signal of one picture in the storing mean.
摘要翻译：一种用于将宽带的模拟图像信号转换为由用于采样和存储至少一帧的图像信号的装置组成的窄带的脉冲串信号的装置，用于以任意的每个样本值读取所存储的信号的装置速率和用于产生具有与读取的采样值成比例的脉冲间隔的脉冲序列的装置可以减少平均传输时间，因为表示一帧图像的脉冲串信号的整个时间根据图像的内容而变化。一种用于将窄带的脉冲串信号转换成宽带的模拟图像信号的系统，所述宽带的模拟图像信号包括用于产生与所提供的脉冲序列信号的脉冲间隔成比例的采样幅度的信号的装置，以及存储装置，在脉冲串信号的每个脉冲上写入采样幅度，并且以等于在存储平均值中的一个图像的信号的写入结束之后的图像信号的采样周期的速率读出图像信号。

2. 发明授权

US3905039A System for band conversion of color picture signal 失效
标题翻译：彩色图像信号的频带转换系统
公开(公告)号：US3905039A
公开(公告)日：1975-09-09
申请号：US39661173
申请日：1973-09-12
申请人： HITACHI LTD
发明人： YUMDE YASUFUMI , FURUHATA TAKASHI
IPC分类号： H04N5/915 , H04N9/86 , H04N11/02 , H04N9/42
CPC分类号： H04N9/86 , H04N5/915 , H04N11/02
摘要： A system for converting a simultaneous color picture signal of a wide band into a field sequential color picture signal of a narrow band and a system for reconverting a field sequential color picture signal of a narrow band into a simultaneous color picture signal of a wide band. The former system comprises memory means capable of varying the writing speed and the reading speed and having the memory capacity capable of storing a picture signal of one frame, means for switching two input signals to output them at every field period, means for obtaining one of the two chrominance signals of a simultaneous color picture signal at the odd numbered field and obtaining the other chrominance signal at the even numbered field by means of the switching means, and means for writing at a high speed and reading at a low speed in and from the memory means the luminance signal and the chrominance signals different at every field of the color picture signal. The latter system comprises memory means capable of varying the writing speed and the reading speed, having the memory capacity capable of storing a picture signal of one frame, capable of repeatedly reading the stored signal therefrom, and capable of simultaneously reading therefrom signals differing by one field period from each other, means for writing a signal of one frame of a field sequential color picture signal of a narrow band in the memory means at a low speed, and means for repeatedly reading the stored signal at a high speed and obtaining two chrominance signals from the simultaneously read out signals differing by one field period.
摘要翻译：一种用于将宽带的同时彩色图像信号转换为窄带的场顺序彩色图像信号的系统和用于将窄带的场顺序彩色图像信号重新转换为宽带的同时彩色图像信号的系统。前一个系统包括能够改变写入速度和读取速度并具有能够存储一帧的图像信号的存储器容量的存储装置，用于在每个场周期切换两个输入信号以输出它们的装置，用于获得在奇数场的同时彩色图像信号的两个色度信号，并通过切换装置在偶数场获得另一个色度信号，以及用于高速写入并以低速读取的装置存储器是指彩色图像信号的每个场的亮度信号和色度信号不同。后一种系统包括能够改变写入速度和读取速度的存储装置，其具有能够存储一帧的图像信号的存储容量，能够从其重复读取所存储的信号，并且能够同时从其中读取不同于1的信号场周期，用于以低速在存储装置中写入窄带的场顺序彩色图像信号的一帧的信号的装置，以及用于以高速反复读取所存储的信号的装置，并获得两个色度来自同时读出的信号的信号不同于一个场周期。

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