Optical circulator and optical switch
    31.
    发明授权
    Optical circulator and optical switch 有权
    光环行器和光开关

    公开(公告)号:US07050232B2

    公开(公告)日:2006-05-23

    申请号:US10381474

    申请日:2001-10-01

    IPC分类号: G02B27/28 G02B5/30

    摘要: A first separating/combining birefringent element 10, first and second optical-path controlling birefringent elements 11, 12, and a second separating/combining birefringent element 13 are spaced apart. Between the first separating/combining birefringent element and the first optical-path controlling birefringent element, a first polarization rotating means 14 is arranged for changing a polarization direction from an orthogonal relationship to a parallel relationship, or from a parallel relationship to an orthogonal relationship. Also, between the second optical-path controlling birefringent element and the second separating/combining birefringent element, a second polarization rotating means 17 is arranged. The first and second optical-path controlling birefringent elements are oppositely arranged symmetrically on optical axis about an arrangement center thereof, between which is arranged a ½-wavelength plate for rotating a polarization direction of a light on a central optical path 90 degrees, thereby structuring an optical circulator. With a similar structure, an optical switch can be structured by using a ±45-degree variable Faraday rotator in the first and second polarization rotation switch means.

    摘要翻译: 第一分离/组合双折射元件10,第一和第二光路控制双折射元件11,12和第二分离/组合双折射元件13间隔开。 在第一分离/组合双折射元件和第一光路控制双折射元件之间,设置第一偏振旋转装置14,用于将偏振方向从正交关系改变为平行关系,或者从平行关系改变为正交关系。 此外,在第二光路控制双折射元件和第二分离/组合双折射元件之间,布置有第二偏振旋转装置17。 第一和第二光路控制双折射元件围绕其布置中心在光轴上对称地布置,其间布置有1/2波长板,用于将中心光路上的光的偏振方向旋转90度,从而构造 光环行器。 具有类似的结构,可以通过在第一和第二偏振旋转开关装置中使用±45度的可变法拉第旋转器来构造光学开关。

    Optical disc apparatus and information recording apparatus using the optical disc apparatus
    32.
    发明授权
    Optical disc apparatus and information recording apparatus using the optical disc apparatus 失效
    使用光盘装置的光盘装置和信息记录装置

    公开(公告)号:US06765850B2

    公开(公告)日:2004-07-20

    申请号:US09928341

    申请日:2001-08-14

    IPC分类号: G11B700

    摘要: An optical disc apparatus including a system controller that receives a recording control command via an interface. A recording control block that receives a recording method command signal indicative of one of recording with verify and real time recording and recording data from the system controller. An optical head that modulates the power of laser beam using a recording pulse sent from the control block and records the recording data on an information recording medium. The recording data is recorded in the information recording medium according to the recording with verify and the real time recording using different recording power respectively, in which under the recording with verify, the recording power determined by recording compensation learning is used, and under the real time recording, the recording power higher than the recording power obtained by the recording compensation learning is used.

    摘要翻译: 一种光盘装置,包括经由接口接收记录控制命令的系统控制器。 一种记录控制块,其接收表示来自系统控制器的验证和实时记录和记录数据之一的记录之一的记录方法命令信号。 一种光头,其使用从控制块发送的记录脉冲来调制激光束的功率,并将记录数据记录在信息记录介质上。 记录数据根据具有验证的记录和使用不同的记录功率的实时记录分别记录在信息记录介质中,其中在使用记录补偿学习确定的记录功率的记录下,并且在真实的 使用高于通过记录补偿学习获得的记录功率的记录功率的记录功率。

    Seat cushion pad for automobiles
    35.
    发明授权
    Seat cushion pad for automobiles 失效
    汽车坐垫垫

    公开(公告)号:US6089657A

    公开(公告)日:2000-07-18

    申请号:US149960

    申请日:1998-09-09

    IPC分类号: A47C7/02 A47C7/18 A47C31/00

    CPC分类号: A47C7/18 A47C7/022 Y10S297/01

    摘要: A seat cushion pad for automobiles, wherein at least a part of the seat surface portion comprises a high-resilience foam. The foam is selected such that a load ratio (3%ISR) between a load at which the thickness is 25% compressed when pressed with a pressure plate having a diameter of 60 mm (25%-strain load) and a load at which the thickness is 3% compressed when pressed with the same pressure plate (3%-strain load) is at least about 6. Alternatively, another ratio (5%ISR) between the load at which the thickness is 25% compressed when pressed with the above dimensioned pressure plate (25%-strain load) and a load at which the thickness is 5% compressed when pressed with the pressure plate (5%-strain load) is selected to be at least about 4. Such design provides comfortable seating and resistance against fatigue even during periods of extended driving, and can be prepared at a low cost with a large degree of design freedom.

    摘要翻译: 一种用于汽车的座垫垫,其中座表面部分的至少一部分包括高弹性泡沫。 泡沫被选择为使得当用直径为60mm的压力板(25% - 应力负载)挤压时,厚度为25%的载荷之间的载荷比(3%ISR)和 当用相同的压力板(3% - 应变载荷)压制时,厚度为3%压缩至少约为6.另外,当用上述压力时,厚度为25%的载荷之间的另一比例(5%ISR) 尺寸压力板(25% - 应变载荷)和当用压板(5% - 应变载荷)压制时厚度为5%压缩的载荷被选择为至少约4.这种设计提供舒适的座椅和电阻 即使在延长驾驶期间也能够抗疲劳,并且可以以低成本准备好设计自由度。

    Rotary drum for video tape recorder
    39.
    发明授权
    Rotary drum for video tape recorder 失效
    磁带录音机转鼓

    公开(公告)号:US5220472A

    公开(公告)日:1993-06-15

    申请号:US662619

    申请日:1991-02-27

    IPC分类号: G11B15/61

    CPC分类号: G11B15/61

    摘要: A surface of an upper rotary drum of a video tape recorder is machines such that it has a surface roughness in a range from 1 .mu.m to 2 .mu.m so as to enable a releasing of air on the upper rotary drum surface uniformly whereby a thickness of an air film between a magnetic tape and a head is uniformly reduced without affecting the tape running. The surface may be grooved concurrently with the roughened surface. A window is formed in rotary drum for receiving at least one magnetic head.

    摘要翻译: 磁带录像机的上部旋转磁鼓的表面是机器,其表面粗糙度在1μm至2μm的范围内,以便均匀地释放上部旋转磁鼓表面上的空气,由此厚度 在磁带和磁头之间的气膜均匀地减小而不影响磁带的运行。 表面可以与粗糙表面同时开槽。 窗口形成在用于接收至少一个磁头的旋转磁鼓中。

    Rotary drum assembly for a video tape recorder
    40.
    发明授权
    Rotary drum assembly for a video tape recorder 失效
    用于录像机的旋转鼓组件

    公开(公告)号:US5070424A

    公开(公告)日:1991-12-03

    申请号:US447556

    申请日:1989-12-07

    IPC分类号: G11B5/02 G11B5/53 G11B33/12

    CPC分类号: G11B33/121 G11B5/53

    摘要: A rotary drum assembly for a VTR including a rotary drum and a disk. The rotary drum fixedly holding magnetic heads, and first power feeding members (slip rings) included in a power feeding unit for feeding power to electronic signal processing circuit for processing signals for the magnetic heads are provided concentrically on the surface of the disk fixed to a spindle. First connecting members, fixedly provided on the rotary unit, connected to a wiring board connected to the terminals of the coils of the magnetic heads to transmit signals to or from the magnetic heads and to feed power fed through the first power feeding members of the power feeding unit to the wiring board, and second connecting members, provided between the wiring board and the first power feeding members, are secured to support plates, and the support plates are disposed in a region radially inside mating surfaces which are brought into contact each other in attaching the rotary drum to the disk.

    摘要翻译: 一种用于VTR的旋转鼓组件,包括旋转鼓和盘。 固定保持磁头的旋转鼓和包括在用于向用于处理磁头的信号的电子信号处理电路供电的供电单元中的第一供电部件(滑环)同心地设置在固定到磁头的盘的表面上 主轴。 固定地设置在旋转单元上的第一连接构件连接到连接到磁头的线圈的端子的布线板,以将信号传送到磁头或从磁头传送信号,并馈送通过电源的第一供电构件供电的电力 馈送单元到布线板,并且设置在布线板和第一馈电构件之间的第二连接构件被固定到支撑板,并且支撑板布置在彼此接触的配合表面的径向内侧的区域中 将旋转鼓安装到盘上。