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    Band-switchable surface acoustic wave antenna duplexer and mobile radio terminal
    14.
    发明公开
    Band-switchable surface acoustic wave antenna duplexer and mobile radio terminal 有权
    可切换的表面声波天线双工器和移动无线电终端

    公开(公告)号：EP1079534A3

    公开(公告)日：2001-11-07

    申请号：EP00202990.8

    申请日：2000-08-28

    Applicant: Hitachi Media Electronics Co., Ltd.

    Inventor： Hikita, Mitsutaka, Central Lab. of Hitachi, Ltd. ,  Shibagaki, Nobuhiko, Central Lab. of Hitachi, Ltd. ,  Sakiyama, Kazuyuki ,  Kijima, Masato ,  Hikino, Osamu

    IPC: H04B1/52 ,  H01P1/213

    CPC classification number: H03H9/725 ,  H03H7/0161 ,  H03H7/1708 ,  H03H7/175 ,  H03H7/1758 ,  H03H7/1766 ,  H03H7/1775 ,  H03H7/465 ,  H03H9/0576 ,  H03H9/72

    Abstract: A surface acoustic wave antenna duplexer constituted by a transmitter-line filter, a receiver-line filter and an antenna terminal, the transmitter-line filter and the receiver-line filter being connected in parallel with the antenna terminal as a common terminal; wherein at least one of the transmitter-line and receiver-line filters includes a top filter using the whole of a transmitter band or a receiver band as its pass band, a surface acoustic wave resonator filter, and a transmitter or receiver terminal, the top filter, the surface acoustic wave resonator filter and the transmitter or receiver terminal being disposed in this order viewed from the antenna terminal, the surface acoustic wave resonator filter including at least one additive capacitance or inductance; and wherein a switching element is provided for varying a value of the capacitance or inductance so as to provide a function for varying a pass band frequency or an attenuation band frequency of the surface acoustic wave resonator filter.

    Abstract translation: 一种由发射机线路滤波器，接收机线路滤波器和天线端子构成的表面声波天线双工器，发射机线路滤波器和接收机线路滤波器与作为公共端子的天线端子并联连接; 其中发射机线路和接收机线路滤波器中的至少一个包括使用整个发射机频带或接收机频带作为其通带的顶部滤波器，表面声波谐振器滤波器和发射机或接收机终端，顶部 所述弹性表面波谐振器滤波器和所述发射器或接收器端子按照从所述天线端子观察的顺序布置，所述表面声波谐振器滤波器包括至少一个附加电容或电感; 并且其中提供开关元件用于改变电容或电感的值，以便提供用于改变表面声波谐振器滤波器的通带频率或衰减带频率的功能。

    Objective lens driving device and optical disc apparatus using the same
    15.
    发明公开
    Objective lens driving device and optical disc apparatus using the same 失效
    物镜驱动装置及使用其的光盘装置

    公开(公告)号：EP0825594A2

    公开(公告)日：1998-02-25

    申请号：EP97114111.4

    申请日：1997-08-14

    Applicant: HITACHI, LTD. ,  Hitachi Media Electronics Co., Ltd.

    Inventor： Inui, Shinro ,  Otoshi, Naohiko ,  Izumi, Katsuhiko ,  Miura, Michio ,  Kuroda, Naomitsu ,  Mizuno, Ryuichiro

    IPC: G11B7/135

    CPC classification number: G11B7/1374 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

    Abstract: It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam (8) is passed through a space surrounded by a tracking coil (4) and a focusing coil (5) which are adjacent to each other and fixed in a holder (3). Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances (12-1) to (12-(4) which are radially extended with the sliding shaft (6) at the center are provided in the lens holder (3), and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens (7-1) and a second objective lens (7-2) are arranged so that the objective lens arrangement angle (20) at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft (6) is displaced, by a predetermined amount, from the magnetic circuit arrangement angle (13) at which the magnetic substances (12) and the magnets (2) are arranged with respect to the shaft center of the sliding shaft (6).

    Abstract translation: 目的是实现物镜驱动装置的薄且紧凑的设计。 为了实现上述目的，光束（8）穿过彼此相邻并固定在支架（3）中的由跟踪线圈（4）和聚焦线圈（5）围绕的空间。 此外，另一个目的是将物镜高精度地定位在用于根据光盘的类型切换多个物镜的物镜驱动装置中。 为了实现该目的，在透镜保持器（3）中设置有以滑动轴（6）为中心在径向延伸的磁性体（12-1）〜（12-（4）），磁性体 位于与构成磁隙的平面垂直的平面内和磁隙的外侧，而且，在物镜驱动装置中，还有另一目的是防止物镜的阻力产生位置偏移 为了实现这个目的，第一物镜（7-1）和第二物镜（7-2）这样排列，使得物镜配置角（20）在第一和第二物镜 相对于滑动轴（6）的轴心布置的透镜从布置磁性体（12）和磁体（2）的磁路布置角度（13）移位预定量 尊重轴心o f滑动轴（6）。

    Laser projection display device and laser drive control method
    16.
    发明公开
    Laser projection display device and laser drive control method 审中-公开
    Laserprojektionsanzeigevorrichtung und Laserantriebssteuerungsvorrichtung

    公开(公告)号：EP2775472A2

    公开(公告)日：2014-09-10

    申请号：EP14000131.4

    申请日：2014-01-14

    Applicant: Hitachi Media Electronics Co., Ltd.

    Inventor： Ogi, Yuya ,  Seo, Yoshiho ,  Haruna, Fumio ,  Ueda, Toshio ,  Nonaka, Tomoyuki

    IPC: G09G3/00

    CPC classification number: G09G5/02 ,  G09G3/002 ,  G09G3/025 ,  G09G3/2081 ,  G09G2320/0238 ,  G09G2320/0242 ,  G09G2320/0247 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/103 ,  G09G2360/145 ,  G09G2360/16 ,  H04N9/3135

    Abstract: A laser projection display device includes: a laser light source drive means; an attribute amount detection means for detecting the attribute amount of a picture signal; a light sensor (10) that measures the light amounts of the laser light sources; and a temperature sensor (11) that measures the temperatures of the laser light sources. The laser projection display device is configured so that the current vs. light amount output characteristics of the laser light sources with a threshold current and the current gain as a parameter are corrected in accordance with the load amount of the picture signal per frame if the change of the attribute amount exceeds a predefined amount; the light sources are driven at a predefined timing of the vertical blanking interval; controls the threshold currents and current gains in accordance with the light amounts; and the threshold currents and current gains are corrected on the basis of the measured temperatures.

    Abstract translation: 激光投影显示装置包括：激光源驱动装置; 属性量检测装置，用于检测图像信号的属性量; 光传感器（10），其测量所述激光光源的光量; 以及测量激光源的温度的温度传感器（11）。 激光投影显示装置被配置为使得具有阈值电流和当前增益作为参数的激光源的电流对光量输出特性根据每帧的图像信号的负载量被校正，如果改变 的属性量超过预定义的量; 在垂直消隐间隔的预定定时驱动光源; 根据光量控制阈值电流和电流增益; 并且基于测量的温度校正阈值电流和电流增益。

    Switching power supply and method of switching
    17.
    发明公开
    Switching power supply and method of switching 审中-公开
    Schaltnetzteil和Schaltverfahren

    公开(公告)号：EP2234257A1

    公开(公告)日：2010-09-29

    申请号：EP10153803.1

    申请日：2010-02-17

    Applicant: Hitachi Media Electronics Co., Ltd.

    Inventor： Ouchi, Takayuki ,  Kanouda, Akihiko

    IPC: H02M3/335 ,  H02M1/42

    CPC classification number: H02M1/4241 ,  H02M3/335 ,  Y02B70/126

    Abstract: A switching power supply includes: a rectifier for generating an output between first and second polarity terminals; a first capacitor connected in parallel to the first and second polarity terminals of the rectifying circuit; an inductor connected to one polarity terminal at one end; second and third circuits connected to and in parallel to the other end and the second polarity terminal; a transformer including primary and secondary windings; and a smoothing circuit connected to the secondary winding. The first circuit includes first and second switches connected in series. The second circuit includes a third switch and a second capacitor connected in series; the third circuit includes the primary winding and a third capacitor connected in series and is connected in parallel to the second switch. In a method of switching the third switching element is turned off while the first and second switching elements are simultaneously turned on.

    Abstract translation: 开关电源包括：用于在第一和第二极性端子之间产生输出的整流器; 与整流电路的第一极性端子和第二极性端子并联连接的第一电容器; 在一端连接到一个极性端子的电感器; 连接到另一端并且与第二极性端子并联的第二和第三电路; 包括初级和次级绕组的变压器; 以及连接到次级绕组的平滑电路。 第一电路包括串联连接的第一和第二开关。 第二电路包括串联连接的第三开关和第二电容器; 第三电路包括初级绕组和串联连接并与第二开关并联连接的第三电容器。 在第一开关元件和第二开关元件同时导通的同时切换第三开关元件的方法被切断。

    Thin film piezoelectric bulk acoustic wave resonator and radio frequency filter using the same
    18.
    发明公开
    Thin film piezoelectric bulk acoustic wave resonator and radio frequency filter using the same 审中-公开
    PiezoelektrischerDünnfilm-Volumenwellenresonator und Hochfrequenzfilter damit

    公开(公告)号：EP1887689A1

    公开(公告)日：2008-02-13

    申请号：EP07002097.9

    申请日：2007-01-31

    Applicant: Hitachi Media Electronics Co., Ltd.

    Inventor： Isobe, Atsushi, c/o Hitachi, Ltd., IP Group ,  Asai, Kengo, c/o Hitachi, Ltd., IP Group ,  Matsumoto, Hisanori, c/o Hitachi, Ltd., IP Group ,  Shibagaki, Nobuhiko, c/o Hitachi, Ltd., IP Group

    IPC: H03H9/17 ,  H03H9/13 ,  H03H9/02 ,  H03H9/56

    CPC classification number: H03H9/02228 ,  H03H3/04 ,  H03H9/173 ,  H03H9/175 ,  H03H9/564 ,  H03H9/568 ,  H03H9/605 ,  H03H2003/0428 ,  H03H2003/0457 ,  H03H2003/0471

    Abstract: An object of the present invention is to provide an inexpensive thin film piezoelectric bulk acoustic wave resonator that allows fine-tuning of a resonant frequency. A thin film piezoelectric bulk acoustic wave resonator of the present invention has a laminated structure including a piezoelectric thin film (5), and a first metal electrode film (3) and a second metal electrode film (4) between which part of the piezoelectric thin film (5) is sandwiched; the first metal electrode film (3) has a plurality of holes (7) formed on an electrode plane opposite to the second metal electrode film (4) and having a depth equivalent to at least the thickness of the first metal electrode film (3); and if a combined thickness of top and bottom electrode layers (3,4) and the piezoelectric thin film (5) is ht, the covering ratio (σ) of the electrode plane of the first metal electrode film (3) satisfies a condition 0

    Abstract translation: 本发明的目的是提供一种廉价的薄膜压电体声波谐振器，其允许谐振频率的微调。 本发明的薄膜压电体声波谐振器具有包括压电薄膜（5）和第一金属电极薄膜（3）和第二金属电极薄膜（4）的叠层结构，其中压电薄膜 薄膜（5）夹在中间; 第一金属电极膜（3）具有形成在与第二金属电极膜（4）相反的电极面上并具有至少等于第一金属电极膜（3）的厚度的深度的多个孔（7） ; 并且如果顶部和底部电极层（3,4）和压电薄膜（5）的组合厚度为ht，则第一金属电极膜（3）的电极平面的覆盖比（¡）满足条件0 每1.28 ht的距离<Ã<1。

    Objective lens driving device and optical disc apparatus using the same
    19.
    发明公开
    Objective lens driving device and optical disc apparatus using the same 失效
    Antriebsvorrichtungfüreine Objektivlinse und damitausgerüstetesopstischesPlattengerät

    公开(公告)号：EP1469462A3

    公开(公告)日：2004-12-22

    申请号：EP04017651.3

    申请日：1997-08-14

    Applicant: Hitachi, Ltd. ,  Hitachi Media Electronics Co., Ltd.

    Inventor： Inui, Shinro ,  Otoshi, Naohiko ,  Izumi, Katsuhiko ,  Miura, Michio ,  Kuroda, Naomitsu ,  Mizuno, Ryuichiro

    IPC: G11B7/09 ,  G11B7/135

    CPC classification number: G11B7/1374 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

    Abstract: It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam (8) is passed through a space surrounded by a tracking coil (4) and a focusing coil (5) which are adjacent to each other and fixed in a holder (3). Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances (12-1) to (12-(4) which are radially extended with the sliding shaft (6) at the center are provided in the lens holder (3), and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens (7-1) and a second objective lens (7-2) are arranged so that the objective lens arrangement angle (20) at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft (6) is displaced, by a predetermined amount, from the magnetic circuit arrangement angle (13) at which the magnetic substances (12) and the magnets (2) are arranged with respect to the shaft center of the sliding shaft (6).

    Abstract translation: 本发明的目的是实现物镜驱动装置的薄型紧凑设计。 为了实现上述目的，光束（8）通过由跟踪线圈（4）围绕的空间和聚焦线圈（5），彼此相邻并固定在保持器（3）中。 此外，另一目的是将物镜高精度地定位在用于根据光盘的类型切换多个物镜的物镜驱动装置中。 为了实现该目的，在透镜保持架（3）上设置有在中心处与滑动轴（6）径向延伸的磁性物质（12-1）至（12-（4）），并且磁性物质 位于与构成磁隙的平面垂直的平面内，位于磁隙的外侧。另外，在物镜驱动装置中，另一个目的是防止物镜的位置偏移由于 为了实现这个目的，第一物镜（7-1）和第二物镜（7-2）被布置成使得第一和第二物镜（7-1）和第二物镜 透镜相对于滑动轴（6）的轴心从磁性物质（12）和磁体（2）的磁路配置角度（13）位移一定量， 相对于轴心o f滑动轴（6）。

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