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33 条记录 (耗时 0.015 秒)

    Optical system for camera tube
    14.
    发明公开
    Optical system for camera tube 失效
    用于图像拾取管的光学系统。

    公开(公告)号：EP0094676A1

    公开(公告)日：1983-11-23

    申请号：EP83104849.1

    申请日：1983-05-17

    申请人： HITACHI, LTD.

    发明人： Sato, Masanori ,  Nagahara, Shusaku ,  Takahashi, Kenji

    IPC分类号： G02B27/46 ,  G02B5/20 ,  H04N9/07

    CPC分类号： G02B27/0988 ,  G02B27/46 ,  H04N9/07

    摘要： A spatial frequency filter apparatus for suppressing spurious signals generated in an optical system for a television camera incorporating a color encoding filter includes two filter elements (1 and 2) for filtering natural light introduced through lens system (11) in both horizontal and vertical directions and an optical plate such as a quarter wavelength plate (3) or a rotatory polarization plate (13) interposed between the two filter elements (1 and 2). By causing natural light to transmit through the two filter elements (1 and 2) and the optical plate (3 or 13) before being introduced to a color encoding filter (12), the spurious signals are suppressed, whereby false color which may otherwise make appearance at the contours of image picked up by the camera tube can be significantly reduced.

    Totally-enclosed type motor
    15.
    发明公开
    Totally-enclosed type motor 无效
    Eingeschlossener Motortyp

    公开(公告)号：EP0776081A1

    公开(公告)日：1997-05-28

    申请号：EP96118709.3

    申请日：1996-11-21

    申请人： HITACHI, LTD.

    发明人： Kajiwara, Kenzo ,  Nagai, Kouki ,  Takahashi, Kenji ,  Kuwahara, Heikichi

    IPC分类号： H02K5/18 ,  H02K5/20

    CPC分类号： H02K9/18 ,  F28D15/0275 ,  H02K5/18

    摘要： In a totally-enclosed type motor, internal cooling air is passed through internal ventilation passages (4a) provided inside a stator frame (4) by an internal fan (9), and external cooling air is passed through external ventilation passages (4b) provided on the outside of the stator frame (4) by an external fan (12). Archly extending inner heat radiation ribs (4c) are provided on the inner surface of the ventilation passages (4a). The raise in temperature is reduced by an improvement in the cooling characteristic, thereby permitting a compact totally-enclosed type motor.

    摘要翻译： 在全封闭式电动机中，内部冷却空气通过内部风扇（9）通过设置在定子框架（4）内部的内部通风通路（4a），外部冷却空气通过设置在外部通风通路（4b） 通过外部风扇（12）在定子框架（4）的外侧。 在通风通路（4a）的内表面设置有弓形延伸的内部散热肋（4c）。 通过改善冷却特性来降低温度升高，从而允许紧凑的全封闭式电动机。

    Radio communication apparatus with circuit for field strength determination
    16.
    发明公开
    Radio communication apparatus with circuit for field strength determination 失效
    与场强检测电路的无线电传输装置。

    公开(公告)号：EP0639901A2

    公开(公告)日：1995-02-22

    申请号：EP94306095.4

    申请日：1994-08-18

    申请人： HITACHI, LTD. ,  HITACHI MICROCOMPUTER SYSTEM LTD.

    发明人： Hagisawa, Hiroshi ,  Watanabe, Kazuo ,  Takahashi, Kyoichi ,  Takahashi, Kenji ,  Waki, Michio ,  Matsuoka, Tadashi

    IPC分类号： H04B17/00

    CPC分类号： H04B17/318

    摘要： Part of a first signal path (100) for amplifying a signal includes circuits (33b, 34b) for detecting a signal, and a second signal path (200) connected to an input portion of the first signal path includes circuits (61b, 62b) for detecting the signal. A signal strength detector circuit (5) adds outputs from the respective detector circuits in the first and second signal paths. The first signal path has a function of expanding the dynamic range in a smaller signal region as compared with the second signal path, while the second signal path has a function of expanding the dynamic range in a larger signal region as compared with the first signal path. When a radio transmitted output is variably controlled in a radio transmitter section (TX) based on a field strength detection output for a received signal, the transmitted output is optimized, resulting in minimizing consumed power and unnecessary radiation of radio waves.

    Heat transfer wall for vaporizing liquids and method of producing same
    19.
    发明公开
    Heat transfer wall for vaporizing liquids and method of producing same 失效
    用于蒸发液体和它们的制备方法传热壁。

    公开(公告)号：EP0175216A2

    公开(公告)日：1986-03-26

    申请号：EP85111182.3

    申请日：1985-09-04

    申请人： HITACHI, LTD. ,  HITACHI CABLE, LTD.

    发明人： Kuwahara, Heikichi ,  Takahashi, Kenji ,  Yanagida, Takehiko ,  Nakayama, Wataru ,  Sugimoto, Shigeo ,  Nakayama, Yoshihiko ,  Yoshida, Hiromichi ,  Oizumi, Kiyoshi ,  Sasaki, Toshi ,  Fukuda, Shigeho

    IPC分类号： F28F13/18

    CPC分类号： F28F13/187 ,  Y10T29/49385 ,  Y10T29/49996

    摘要： A heat transfer wall and a method of producing same, including a multiplicity of minute tunnels parallelly extending and spaced a minuscule distance from each other under an outer surface of the wall in contact with liquid, and a multiplicity of tiny hole portions formed at the outer surface of the wall above the tunnels and located at regular intervals along the tunnels to maintain same in communication with the outside. Each hole portion includes a projection located in the hole portion including a hole itself and extending from the vicinity of the hole portion into the hole portion in a manner to traverse same, so that a flow of liquid into the tunnels and a flow of vapor out of the tunnels can be optimally regulated by the projections to enable the heat transfer wall to exhibit a high heat transfer performance.

    摘要翻译： 传热壁和生产相同，包括分钟隧道平行延伸的多个下与液体接触的壁的外表面从海誓山盟隔开极小距离的方法，和在该外FORMED微小孔部的多个 隧道上方的壁的表面，并且位于沿隧道规则的间隔，以保持在与外部连通相同。 获取每个部分包括位于所述孔部的投影包括一个孔本身和以这样的方式从孔部插入的孔部的附近延伸穿过相同的，所以没有液体进入所述管道的流量和蒸汽的流出 隧道可以是由突起调节，以使热传递壁表现出高的传热性能OPTI马利。

    Pulse generating circuit for a television camera using solid state image sensor
    20.
    发明公开
    Pulse generating circuit for a television camera using solid state image sensor 失效
    脉冲发生器电路，用于一个配备有固态图像传感器的电视摄像机。

    公开(公告)号：EP0064298A2

    公开(公告)日：1982-11-10

    申请号：EP82103825.4

    申请日：1982-05-04

    申请人： Hitachi, Ltd. ,  HITACHI DENSHI KABUSHIKI KAISHA

    发明人： Sato, Kazuhiro ,  Murata, Nobuo ,  Takahashi, Kenji ,  Nagahara, Shusaku

    IPC分类号： H04N3/15

    CPC分类号： H04N5/335

    摘要： Disclosed is a solid state television camera with solid state image sensor for converting an optical image into electrical signals, which is comprised of a pulse generator (30, 33, 34, 39) for generating a train of pulses with a frequency equal to the horizontal scanning frequency of a television system, a frequency divider (61) for frequency-dividing the pulse train into a signal with a frequency substantially equal to the vertical scanning frequency alternately in two modes of 1/n and 1/n+1 (wherein n is a positive integer), and a selective circuitry (63, 64, 65, 66 and 67 to 69) for forming a train of pulses with a desired vertical scanning frequency on the basis of the pulse trains derived from the pulse generator (34) and the frequency divider (61).