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    Recording/reproduction system with a fine picture quality for a helical scan-type video tape recorder
    43.
    发明授权
    Recording/reproduction system with a fine picture quality for a helical scan-type video tape recorder 失效
    用于螺旋扫描型录像机的具有精细图像质量的记录/再现系统

    公开(公告)号：US4743978A

    公开(公告)日：1988-05-10

    申请号：US939886

    申请日：1986-12-09

    申请人： Shigeo Tanaka

    发明人： Shigeo Tanaka

    IPC分类号： G11B5/008 ,  G11B5/027 ,  G11B5/53 ,  G11B15/12 ,  H04N5/7826 ,  H04N9/79 ,  H04N9/82 ,  H04N9/825 ,  H04N9/80 ,  G11B5/02 ,  H04N5/782

    CPC分类号： H04N9/8222 ,  G11B15/125 ,  G11B5/534 ,  H04N5/78263 ,  H04N9/7921 ,  H04N9/8255

    摘要： In the video tape recorder capable of providing a recording and reproduction with high picture quality, first and second heads of a first azimuth angle and for recording and reproducing the luminance signal is disposed on the rotary head cylinder. Third and fourth heads of a second azimuth angle different from the first azimuth angle, and for recording and reproducing the color signal is disposed adjacent to the first and second heads on the rotatry head cylinder, respectively. The second and fourth heads are disposed at a position separate, by a distance corresponding to the period of integer times one horizontal scanning period of the recorded video signal, from the position on the rotary head cylinder rotated 180.degree. from that of the first and third heads, respectively. A fifth head with the second azimuth angle is disposed at a positon rotated 180.degree. from that of the first head. High image quality recording and reproduction can be performed by using the first to fourth heads. The first and fifth heads reproduces the video information as recorded on the video tape in the format which is employed for the current home use VTR, and in which the frequency-modulated luminance signal and the low-frequency converted color sub-carrier signal are superposed and recorded in one track.

    摘要翻译： 在能够提供具有高图像质量的记录和再现的录像机中，具有第一方位角的第一和第二头以及用于记录和再现亮度信号的磁带录像机设置在旋转磁头气缸上。 与第一方位角不同的第二方位角的第三和第四头以及用于记录和再现彩色信号的第三和第四头分别设置在旋转头圆柱体上的第一和第二头附近。 第二和第四磁头设置在与从第一和第三磁头旋转180°的旋转磁头气缸上的位置分开的距离，该位置与记录的视频信号的一个水平扫描周期的整数倍的周期相对应 头，分别。 具有第二方位角的第五头设置在与第一头旋转180度的位置处。 可以通过使用第一至第四头来执行高图像质量的记录和再现。 第一和第五磁头以用于当前家用VTR的格式再现记录在磁带上的视频信息，并且其中调频亮度信号和低频转换颜色副载波信号被叠加 并记录在一个轨道上。

    Silver halide color photographic material
    44.
    发明授权
    Silver halide color photographic material 失效
    卤化银彩色照相材料

    公开(公告)号：US4564591A

    公开(公告)日：1986-01-14

    申请号：US715035

    申请日：1985-03-21

    申请人： Shigeo Tanaka ,  Kaoru Onodera

    发明人： Shigeo Tanaka ,  Kaoru Onodera

    IPC分类号： G03C7/26 ,  G03C1/005 ,  G03C1/035 ,  G03C7/30 ,  G03C1/02 ,  G03C1/28

    CPC分类号： G03C7/3022 ,  G03C1/035 ,  G03C2001/03517 ,  G03C2001/03535

    摘要： Silver halide color photographic material comprising a support and at least one emulsion layer thereon, the emulsion layer containing silver halide grains comprising core particles of high chloride content and a silver halide coating layer on the core particle. The coating layer is primarily silver bromide and the combined silver halide content of the core particles and the coating thereon is 90 to 99.5 mol % silver chloride and 0.5 to 10 mol % silver bromide.

    摘要翻译： 卤化银彩色照相材料包括载体和其上的至少一个乳剂层，所述乳剂层含有卤化银颗粒，其包含高氯含量的核心颗粒和核心颗粒上的卤化银涂层。 涂层主要是溴化银，芯颗粒和其上的涂层的组合卤化银含量为90-99.5mol％氯化银和0.5-10mol％溴化银。

    Digital servo system for rotating member
    47.
    发明授权
    Digital servo system for rotating member 失效
    用于旋转构件的数字伺服系统

    公开(公告)号：US4243921A

    公开(公告)日：1981-01-06

    申请号：US933911

    申请日：1978-08-15

    申请人： Masaaki Tamura ,  Shigeo Tanaka

    发明人： Masaaki Tamura ,  Shigeo Tanaka

    IPC分类号： G11B15/467 ,  G05B11/26 ,  H02P23/00

    CPC分类号： H02P23/186 ,  Y10S388/901 ,  Y10S388/912

    摘要： A digital servo system for a rotating member which detects a difference between phases of a reference signal and a signal representing the rotation phase of the rotating member thereby to control its rotation in accordance with the phase difference. Comparison is made by a digital rotation phase comparator between points of time at which first and second predetermined counts are made by a clock pulse counter which is cleared for each period of the reference signal and a point of time at which the rotation phase information signal of the rotating member is produced. When the rotation phase signal appears during an interval between the first and second counts, a latch signal is generated in synchronization with the rotation phase signal to cause an instantaneous count between the first and second counts of the counter to be loaded into a latch circuit. A pulse width modulator generates a pulse train whose width corresponds to the latched count; and the rotation of the rotation member is controlled in accordance with a DC output voltage level of a driving circuit which corresponds to the pulse width of the pulse width modulated signal.

    摘要翻译： 一种用于旋转构件的数字伺服系统，其检测参考信号的相位和表示旋转构件的旋转相位的信号之间的差异，从而根据相位差来控制其旋转。 在由参考信号的每个周期清除的时钟脉冲计数器进行第一和第二预定计数的时间点之间的数字旋转相位比较器进行比较，以及基准信号的旋转相位信息信号的时间点 产生旋转构件。 当在第一和第二计数之间的间隔期间出现旋转相位信号时，与旋转相位信号同步地产生锁存信号，以使计数器的第一和第二计数之间的瞬时计数被加载到锁存电路中。 脉冲宽度调制器产生宽度对应于锁存计数的脉冲串; 根据与脉冲宽度调制信号的脉冲宽度对应的驱动电路的直流输出电压来控制旋转部件的旋转。

    Process for the production of ethylene-propylene block copolymers
    48.
    发明授权
    Process for the production of ethylene-propylene block copolymers 失效
    用于生产乙烯 - 丙烯嵌段共聚物的方法

    公开(公告)号：US4066718A

    公开(公告)日：1978-01-03

    申请号：US730742

    申请日：1976-10-08

    申请人： Shinichi Saito ,  Asaya Okaue ,  Kazuo Baba ,  Shigeo Tanaka

    发明人： Shinichi Saito ,  Asaya Okaue ,  Kazuo Baba ,  Shigeo Tanaka

    IPC分类号： C08F297/00 ,  C08F297/08

    CPC分类号： C08F297/083

    摘要： A method for the continuous production of crystalline ethylene-propylene block copolymers containing propylene as the major component and having excellent physical properties as that by a batch process in a slurry-phase by homopolymerizing propylene and then copolymerizing ethylene and propylene in the presence of an inert hydrocarbon solvent and a stereoregular polymerization catalyst in polymerization vessels connected in series, which is characterized by homopolymerizing propylene in three polymerization vessels, wherein the inner pressure of the vessels is decreased in order so as to make the inner-pressure difference between each consecutive two vessels from 1 to 3 kg/cm.sup.2, and then copolymerizing ethylene and propylene in at least two polymerization vessels, the resulting slurry being transferred from one vessel to the next vessel by the inner-pressure difference between the vessels without using a transferring pump in the homopolymerization step and being pressure-transferred to at least one vessel by using a transferring pump for raising the pressure in the copolymerization step.