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    • 4. 发明授权
    • Thin film magnetic head device
    • 薄膜磁头装置
    • US5436780A
    • 1995-07-25
    • US897448
    • 1992-06-10
    • Yuji NagataToshio FukazawaKumiko WadaYoshihiro TozakiSatoru MitaniTerumi Yanagi
    • Yuji NagataToshio FukazawaKumiko WadaYoshihiro TozakiSatoru MitaniTerumi Yanagi
    • G11B5/31G11B5/48G11B15/12G11B5/265
    • G11B15/125G11B5/3103G11B5/4893
    • A thin film magnetic head device to be equipped on a magnetic recording and reproducing system can meet a plurality of recording formats and carry out stabilized recording/reproducing without depending on the running direction of the magnetic tape. There are combined either of at least two thin film magnetic heads for recording each having on a substrate a recording transducer for recording information on a magnetic tape or two thin film magnetic heads for reproducing each having a reproducing transducer for reading out information recorded on a magnetic tape or two thin magnetic heads for recording and reproducing .in which the recording transducer and the reproducing transducer exist together. According to the running direction of the magnetic tape, only the thin film magnetic head Which is situated at the downstream side in the running direction of the magnetic tape is activated to be always in an operating condition.
    • 配备在磁记录再现系统上的薄膜磁头装置可以满足多种记录格式,并且不依赖于磁带的运行方向进行稳定的记录/再现。 至少两个薄膜磁头中的至少两个用于记录的薄膜磁头中的每一个都具有用于在磁带上记录信息的记录换能器或用于再现每个具有用于读出记录在磁性上的信息的再现换能器的两个薄膜磁头的记录换能器 磁带或两个用于记录和再现的薄磁头,其中记录换能器和再现换能器存在一起。 根据磁带的运行方向,只有位于磁带运行方向下游侧的薄膜磁头被激活才能始终处于工作状态。
    • 9. 发明授权
    • Projector system
    • 投影仪系统
    • US5451103A
    • 1995-09-19
    • US222957
    • 1994-04-05
    • Masato HatanakaYuji NagataEiji Takahashi
    • Masato HatanakaYuji NagataEiji Takahashi
    • H04N9/31G03B21/28
    • H04N9/3105
    • A projector rear is simple in structure uses reflection type liquid crystal plates to project images on a screen. R light emitted by a light source is directed to a first liquid crystal plate via a first dichroic mirror. Light reflected from the first liquid crystal plate is reflected toward a projection axis by the first dichroic mirror. B light transmitted through the first dichroic mirror is reflected by a second dichroic mirror and impinges on a second liquid crystal plate. Light reflected by this second liquid crystal plate is again reflected toward the projection axis by the second dichroic mirror. G light is made to directly enter a third liquid crystal plate. G light reflected by the third liquid crystal plate travels along the projection axis. The angular positional relations among optical elements are so set that the angle of incidence to the normal to each dichroic mirror is close to the angle of reflection.
    • 投影机后部结构简单,使用反射型液晶板在屏幕上投影图像。 由光源发射的R光通过第一分色镜被引导到第一液晶板。 从第一液晶板反射的光被第一分色镜朝投影轴反射。 通过第一分色镜的B光被第二分色镜反射并撞击在第二液晶板上。 由第二液晶板反射的光再次通过第二分色镜朝投影轴反射。 G光直接进入第三液晶板。 由第三液晶板反射的G光沿投影轴行进。 光学元件之间的角位置关系被设定为使得与每个分色镜的法线的入射角接近于反射角。