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    • 21. 发明授权
    • Band width compressing/reproducing system with fields for different
frequency components
    • 带宽压缩/再现系统,具有不同频率分量的场
    • US5019902A
    • 1991-05-28
    • US388055
    • 1989-08-01
    • Seijiro YasukiKiyoyuki Kawai
    • Seijiro YasukiKiyoyuki Kawai
    • H04N7/12H04N7/00H04N7/015H04N11/24H04N19/423H04N19/70H04N19/80H04N19/85
    • H04N11/006H04N19/63H04N7/007H04N7/015
    • At a time of band width compression, an input signal is separated into a horizontal high frequency component H and a horizontal low frequency component L by means of an LPF and an adder. The component H is subjected to in-frame averaging by an in-frame average circuit. The component L is delayed by one field by a field delay circuit which contains a component to provide smooth motion. The delayed output is added to the in-frame average output in one field by an adder. In the other field, a difference in the horizontal low frequency component between fields is attained by a field delay circuit and an adder. Accordingly, in one field a signal containing the component L and the component H subjected to in-frame averaging is attained. In the other field, a signal containing only the component L having gone through a process of obtaining the field-to-field difference is attained. At a time of band width reproduction, an input signal is output as it is in one field through two switch circuits. In the other field, the input sighnal is added to an input signal in the former field by a field delay circuit and an adder. The added output is transferred through a switch.
    • 在带宽压缩时,通过LPF和加法器将输入信号分离为水平高频分量H和水平低频分量L. 分量H通过帧内平均电路进行帧内平均。 分量L被场延迟电路延迟一个场,该场延迟电路包含提供平滑运动的分量。 延迟输出由加法器加到一个场中的帧内平均输出。 在另一个场中,通过场延迟电路和加法器来获得场之间的水平低频分量的差异。 因此,在一个场中,获得了包含分量L和经过帧内平均的分量H的信号。 在另一个场中,仅获得了经过获得场到场差的处理的分量L的信号。 在带宽再现时,通过两个开关电路将输入信号原样输出到一个场中。 在另一个场中,通过场延迟电路和加法器将输入信号加到前一场的输入信号中。 添加的输出通过交换机传输。
    • 23. 发明授权
    • Television signal processor for converting the number of scanning lines
in a television signal
    • 电视信号处理器,用于转换电视信号中的扫描行数
    • US5402186A
    • 1995-03-28
    • US117000
    • 1993-09-07
    • Kiyoyuki Kawai
    • Kiyoyuki Kawai
    • H04N7/01
    • H04N7/012
    • A television signal processor including a device for generating a frame signal, which represents a moving picture, by combining a first field and a second field of an interlace scanning input signal, a filter for separating the frame signal into a vertical low frequency component and a vertical high frequency component, a device for doubling the frame frequency by a frame progressive operation of the vertical low frequency component, a device for converting the vertical high frequency component into a second vertical low frequency component by shifting the frequency of the vertical high frequency component and for converting the vertical high frequency component into a temporal high frequency component by doubling the frequency of the frame signal, and a device for generating a moving picture signal by combining the temporal high frequency component with the double frame-frequency signal produced by the frame progressive operation of the vertical low frequency component. The processor may double the frequencies of the first and second fields, prior to filtering, instead of performing frequency doubling after filtering.
    • 一种电视信号处理器,包括通过组合隔行扫描输入信号的第一场和第二场来产生表示运动图像的帧信号的装置,用于将帧信号分离成垂直低频分量的滤波器和 垂直高频分量的装置,用于通过垂直低频分量的帧逐行操作来加倍帧频的装置,用于通过将垂直高频分量的频率移位来将垂直高频分量转换为第二垂直低频分量的装置 并且用于通过将帧信号的频率加倍来将垂直高频分量转换成时间高频分量;以及用于通过将时间高频分量与由帧产生的双帧频信号组合来产生运动图像信号的装置 垂直低频分量的逐行操作。 处理器可以在滤波之前将第一和第二场的频率加倍,而不是在滤波后执行倍频。
    • 26. 发明授权
    • Color television system
    • 彩色电视系统
    • US5014116A
    • 1991-05-07
    • US321120
    • 1989-03-10
    • Kiyoyuki Kawai
    • Kiyoyuki Kawai
    • H04N11/24
    • H04N11/006
    • A wide aspect ratio screen color television system, such as a 16:9 aspect ratio screen television system, includes a signal generating circuit for generating the wide aspect ratio screen color television signal with a predetermined two-dimensional frequency band, a screen separating circuit for separating the color television signal into at least a first television signal relating to a relatively narrow aspect ratio portion and second television signal relating to an excess portion thereover, a circuit for eliminating a prescribed high frequency region of the two-dimensional frequency band of the first television signal, a signal suppressing circuit for suppressing the frequency band of the second television signal and a signal multiplexing circuit for multiplexing the suppressed second television signal onto the two-dimensional high frequency band region in place of the eliminated portion of the first television signal.
    • 诸如16:9纵横比的屏幕电视系统之类的宽屏幕比色屏幕彩色电视系统包括用于产生具有预定二维频带的宽高比屏幕彩色电视信号的信号发生电路,用于 将彩色电视信号分离为与相对较窄的纵横比部分有关的至少第一电视信号和与其过剩部分相关的第二电视信号,用于消除第一和第二电视信号的二维频带的规定的高频区域的电路 电视信号,用于抑制第二电视信号的频带的信号抑制电路和用于将抑制的第二电视信号复用到二维高频带区域以代替第一电视信号的消除部分的信号复用电路。
    • 27. 发明授权
    • Sync-signal reproducing circuit for use in television receiver
    • 用于电视接收机的同步信号再现电路
    • US4977445A
    • 1990-12-11
    • US337473
    • 1989-04-13
    • Kiyoyuki Kawai
    • Kiyoyuki Kawai
    • H04N9/44H04N5/08H04N9/45H04N9/64
    • H04N5/08H04N9/45
    • A color subcarrier reproducing circuit reproduces a color subcarrier on the basis of a color burst signal in a color television signal in which phase reference data synchronized with the color burst signal is inserted in a predetermined position in a vertical blanking period, and provides a first clock signal whose frequency is equal to the frequency of the color subcarrier and a second clock signal whose frequency is four times the subcarrier frequency. The second clock signal is frequency-divided by first and second frequency dividers to produce a reproduced horizontal sync signal, and frequency-divided by first and third frequency dividers to produce a reproduced vertical sync signal. A phase reference data reproducing circuit reproduces the phase reference data from the color television signal using the first clock signal as a sampling signal. On detecting that the phase reference data reproduced by the phase reference data reproducing circuit has a predetermined pattern, a pattern detecting circuit resets the first to third frequency dividers, thereby keeping the phases of the horizontal and vertical sync signals in sync with the phase reference data.
    • 彩色副载波再现电路根据彩色电视信号中的色同步信号再现彩色副载波,其中与色同步信号同步的相位参考数据在垂直消隐期间插入到预定位置,并提供第一时钟 频率等于彩色副载波的频率的信号和频率是副载波频率的四倍的第二时钟信号。 第二时钟信号由第一和第二分频器分频以产生再现的水平同步信号,并由第一和第三分频器分频以产生再现的垂直同步信号。 相位参考数据再现电路使用第一时钟信号作为采样信号从彩色电视信号再现相位基准数据。 在检测到由相位参考数据再现电路再现的相位参考数据具有预定模式时,模式检测电路复位第一至第三分频器,从而保持水平和垂直同步信号的相位与相位参考数据同步 。
    • 28. 发明授权
    • Motion-adaptive type signal separator with data companding function
    • 运动自适应型信号分离器,具有数据压扩功能
    • US4870482A
    • 1989-09-26
    • US171735
    • 1988-03-21
    • Seijiro YasukiKiyoyuki Kawai
    • Seijiro YasukiKiyoyuki Kawai
    • H04N9/78
    • H04N9/78
    • A data bandwidth compressor receives an input digital video signal which includes first and second signal components, compresses the data bandwidth of the signal, and outputs a resultant signal. A line difference detector includes a line memory for storing the output signal from the data bandwidth compressor and detects a difference signal between adjacent lines. A frame difference detector includes a frame memory for storing the output signal from the data bandwidth compressor and detects a difference signal between adjacent frames. A motion detector receives the output signal from the data bandwidth compressor and detects an image motion signal included in the output signal. A first separator separates and outputs the first signal component by changing the mixing ratio of the line and frame difference signals, in accordance with the image motion signal. A data interpolator receives the first signal component from the first separator and outputs the first signal component, which is interpolated to obtain an original data bandwidth. A second separator receives the input digital video signal and the first signal component from the data interpolator, and separates and outputs the second signal component.
    • 数据带宽压缩器接收包括第一和第二信号分量的输入数字视频信号,压缩信号的数据带宽,并输出结果信号。 线差检测器包括用于存储来自数据带宽压缩器的输出信号的行存储器,并检测相邻行之间的差分信号。 帧差检测器包括:帧存储器,用于存储来自数据带宽压缩器的输出信号,并检测相邻帧之间的差分信号。 运动检测器接收来自数据带宽压缩器的输出信号,并检测包括在输出信号中的图像运动信号。 第一分离器根据图像运动信号,通过改变线和帧差分信号的混合比来分离并输出第一信号分量。 数据插值器从第一分离器接收第一信号分量,并输出插值的第一信号分量以获得原始数据带宽。 第二分离器从数据插值器接收输入数字视频信号和第一信号分量,并分离并输出第二信号分量。
    • 29. 发明授权
    • Motion detecting circuit for digital video signal
    • 运动检测电路,用于数字视频信号
    • US4851904A
    • 1989-07-25
    • US167188
    • 1988-03-11
    • Toru MiyazakiKiyoyuki Kawai
    • Toru MiyazakiKiyoyuki Kawai
    • H04N5/14H04N9/78
    • H04N9/78H04N5/144
    • A frame memory stores one-frame data of an input digital video signal and outputs the stored data as a one-frame delayed digital video signal. A first motion data generator receives the input digital video signal and the one-frame delayed digital signal from the frame memory and generates first motion data in accordance with the difference between these two signals. A data compander receives the one-frame delayed digital video signal from the frame memory, compands the data amount of the one-frame delayed digital video signal, and oututs the resultant signal. A sub-frame memory stores the output signa from the data compander and outputs the stored data as a two-frame delayed signal. A data expander receives the two-frame delayed output signal from the sub-frame memory, expands the two-frame delayed output signal to the original data amount, and outputs the resultant signal. A second motion data generator receives the input digital video signal and the two-frame delayed signal from the data expander, and generates second motion data in accordance with the difference between the two signals.
    • 帧存储器存储输入数字视频信号的一帧数据,并将所存储的数据作为一帧延迟的数字视频信号输出。 第一运动数据生成器从帧存储器接收输入数字视频信号和一帧延迟的数字信号,并根据这两个信号之间的差产生第一运动数据。 数据压缩器从帧存储器接收一帧延迟的数字视频信号,从而比较一帧延迟的数字视频信号的数据量,并且输出结果信号。 子帧存储器存储来自数据压缩器的输出信号,并将所存储的数据作为两帧延迟信号输出。 数据扩展器从子帧存储器接收两帧延迟的输出信号,将两帧延迟输出信号扩展为原始数据量,并输出结果信号。 第二运动数据生成器从数据扩展器接收输入数字视频信号和两帧延迟信号,并根据两个信号之间的差产生第二运动数据。