公开(公告)号：US3676583A

公开(公告)日：1972-07-11

申请号：US3676583D

申请日：1970-08-13

Applicant: VICTOR COMPANY OF JAPAN

Inventor： MORITA AKIYOSHI ,  ITOH YUKIO

IPC: H04N5/95 ,  H04N5/04 ,  H04N5/78

CPC classification number: H04N5/95

Abstract: A jitter correction system detects and removes a jitter component, of relatively high frequency, from a reproduced video signal. A reference signal is phase modulated by a jitter component of relatively low frequency. The modulated reference signal and the reproduced signal are compared in phase. The jitter component of low frequency is taken out from the phasecompared error output and fed back to the phase modulating means. On the other hand, the jitter component of high frequency is effectively taken out from the error output.

Abstract translation: 抖动校正系统从再现的视频信号中检测和去除相对高频的抖动分量。 参考信号由相对低频的抖动分量进行相位调制。 相位比较调制参考信号和再现信号。 低频的抖动分量从相位比较误差输出中取出并反馈到相位调制装置。 另一方面，高频的抖动分量有效地从误差输出中取出。

公开(公告)号：US3614305A

公开(公告)日：1971-10-19

申请号：US3614305D

申请日：1969-04-22

Applicant: VICTOR COMPANY OF JAPAN

Inventor： HIDAKA TSUNEYOSHI ,  MORITA AKIYOSHI ,  HONJO YOSHIHIKO ,  NISHIMURA TAKASHI

IPC: H04N9/898

CPC classification number: H04N9/898

Abstract: A color signal correction system for a video magnetic tape recorder removes differential frequency changes and differential phase shifts. The system comprises a trigger oscillator which oscillates in phase with a burst signal taken out of the color signal. A first means frequency modulates a color signal filtered out of the reproduced color video signal, and a second means frequency modulates the oscillation frequency of the oscillator. The output signals of the first and second frequency modulation means are mixed to produce a signal having the differential frequency removed therefrom. Control means is provided to control the natural resonant frequency of the tank circuit of the trigger oscillator, the control corresponding to the differential frequency changes and the differential phase shifts.

公开(公告)号：US3681518A

公开(公告)日：1972-08-01

申请号：US3681518D

申请日：1970-05-08

Applicant: VICTOR COMPANY OF JAPAN

Inventor： HIDAKA TSUNEYOSHI ,  MORITA AKIYOSHI ,  HONJO YOSHIHIKO ,  NISHIMURA TAKASHI

IPC: H04N9/898 ,  H04N5/76

CPC classification number: H04N9/898

Abstract: A color video signal correction system for a video tape recorder removes stably differential frequency changes and differential phase shifts. The system comprises a trigger oscillator which oscillates in phase with a burst signal taken out of the chrominance signal. A phase comparator circuit means compares a phase of a horizontal synchronizing signal separated from a luminance signal, by a horizontal synchronizing separation circuit means, with a phase of a horizontal synchronizing signal delayed in one horizontal line scanning time from the separated horizontal synchronizing signal. The trigger oscillator is controlled by an output of the phase comparator.

Abstract translation: 用于磁带录像机的彩色视频信号校正系统消除了稳定的差分频率变化和差分相移。 该系统包括与从色度信号中取出的脉冲串信号同相振荡的触发振荡器。 相位比较器电路装置将由水平同步分离电路装置从亮度信号分离的水平同步信号的相位与从分离的水平同步信号在一个水平行扫描时间延迟的水平同步信号的相位进行比较。 触发振荡器由相位比较器的输出控制。

公开(公告)号：US3930122A

公开(公告)日：1975-12-30

申请号：US45595974

申请日：1974-03-28

Applicant: VICTOR COMPANY OF JAPAN

Inventor： MORITA AKIYOSHI ,  ENAMI TOMOTADA

IPC: H04N5/067 ,  H04N5/073 ,  H04N5/12 ,  H04L7/00 ,  H03B3/04

CPC classification number: H04N5/12

Abstract: An oscillator synchronization circuit in a television camera comprises a circuit for detecting incoming synchronizing signals from the outside, an oscillator capable of oscillating at a first frequency in the absence of the output from said detector circuit and oscillating in free-running at a second frequency sufficiently lower than said first frequency in response to the detector output, and trigger pulse shaping means for shaping trigger pulses from the external synchronizing signal and supplying the same to the oscillator. The oscillator performs free-running oscillation at the first frequency in the absence of an incoming external synchronizing signal and an output of the detector circuit and, in the presence of an external synchronizing signal, synchronizes with the external synchronizing signal and oscillates at the same frequency as that of the synchronizing signal, the free-running oscillation frequency being amply lowered by the output of the detector circuit, and, at the same time, the oscillator being triggered by the trigger pulse.

Abstract translation: 电视摄像机中的振荡器同步电路包括用于检测来自外部的输入同步信号的电路，能够在没有来自所述检测器电路的输出并以足够的第二频率自由运行的情况下以第一频率振荡的振荡器 响应于检测器输出低于所述第一频率，以及触发脉冲整形装置，用于对来自外部同步信号的触发脉冲进行整形并将其提供给振荡器。 在没有输入外部同步信号和检测器电路的输出的情况下，振荡器在第一频率下执行自由振荡，并且在存在外部同步信号的情况下，与外部同步信号同步并以相同的频率振荡 与同步信号的相同，自由振荡频率被检测器电路的输出充分降低，同时振荡器被触发脉冲触发。

公开(公告)号：US3441687A

公开(公告)日：1969-04-29

申请号：US3441687D

申请日：1965-03-31

Applicant: VICTOR COMPANY OF JAPAN

Inventor： INOUE YUZURU ,  MORITA AKIYOSHI

IPC: H04N5/92 ,  G11B5/00 ,  H04N5/76

CPC classification number: H04N5/9205