Record carrier for a magneto-optical disc memory having guide grooves of
a plurality of tracks disposed with a predetermined relation to light
spot diameter
    1.
    发明授权
    Record carrier for a magneto-optical disc memory having guide grooves of a plurality of tracks disposed with a predetermined relation to light spot diameter 失效
    用于磁光盘存储器的记录载体,其具有以光点直径预定关系设置的多个轨道的引导槽

    公开(公告)号:US4985881A

    公开(公告)日:1991-01-15

    申请号:US53564

    申请日:1987-05-21

    摘要: A record carrier for recording, reproducing and erasing information. A circular disc-like substrate has a recording layer thereon such that information is written onto the recording layer by changing the direction of magnetization. A guide groove of a plurality of tracks is formed in advance and extends in the radial direction with flat portions therebetween. Each flat portion between the tracks of the guide groove is divided into a plurality of sectors, each of which includes a header portion in which a header signal containing an address for distinguishing at least a respective sector is formed in advance with pits of a phase structure and a data portion adjacent to the header portion. The guide groove serves as an optical guide for a light beam which records, reproduces and erases information onto the data portion.

    摘要翻译: 用于记录,再现和擦除信息的记录载体。 圆盘状基板上具有记录层,通过改变磁化方向将信息写入记录层。 预先形成多个轨道的引导槽,并且在其间具有平坦部分沿径向方向延伸。 引导槽的轨道之间的每个平坦部分被划分成多个扇区,每个扇区包括一个报头部分,其中包含用于区分至少相应扇区的地址的报头信号预先与相位结构的凹坑形成 以及与头部相邻的数据部分。 引导槽用作光束的光导,其将信息记录,再现和擦除到数据部分上。

    Magneto-optical disc memory apparatus including a header signal and
magneto-optical signal level adjusting circuit
    2.
    发明授权
    Magneto-optical disc memory apparatus including a header signal and magneto-optical signal level adjusting circuit 失效
    磁光盘存储装置,包括标题信号和磁光信号电平调整电路

    公开(公告)号:US5161135A

    公开(公告)日:1992-11-03

    申请号:US617006

    申请日:1990-11-21

    摘要: A record carrier for recording, reproducing and erasing information. A circular disc-like substrate has a recording layer thereon such that information is written onto the recording layer by changing the direction of magnetization. A guide groove of a plurality of tracks is formed in advance and extends in the radial direction with intervals therebetween. Each track of the guide groove is divided into a plurality of sectors, each of which includes a header portion in which a header signal containing an address for distinguishing at least said sector is formed in advance with pits of a phase structure and a data portion adjacent to said header portion. The guide groove serves as an optical guide for a light beam which records, reproduces and erases information onto the data portion. A first detection system for detecting the light intensity of the reflected light from the record carrier and a second detection system for detecting the direction of polarization of the reflected light from the record carrier, and a level adjustment circuit for adjusting the levels of the header signal detected by the first detection system and the data signal detected by the second detection system are incorporated in this apparatus, whereby recording, reproducing and erasing information of any number of sectors are enabled.

    摘要翻译: 用于记录,再现和擦除信息的记录载体。 圆盘状基板上具有记录层,通过改变磁化方向将信息写入记录层。 预先形成多个轨道的引导槽,并且在径向方向上间隔地延伸。 引导槽的每个轨道被分成多个扇区,每个扇区包括一个报头部分,其中包含用于区分至少所述扇区的地址的报头信号预先由相位结构的凹点和相邻的数据部分形成 到所述头部。 引导槽用作光束的光导,其将信息记录,再现和擦除到数据部分上。 用于检测来自记录载体的反射光的光强度的第一检测系统和用于检测来自记录载体的反射光的偏振方向的第二检测系统,以及用于调整标题信号的电平的电平调节电路 由第一检测系统检测到的和由第二检测系统检测的数据信号被并入该装置中,由此启用任何数量的扇区的记录,再现和擦除信息。

    Method and apparatus for thermo magnetic recording/erasing information
with preselected magnetic field switching
    4.
    发明授权
    Method and apparatus for thermo magnetic recording/erasing information with preselected magnetic field switching 失效
    用于预选磁场切换的热磁记录/擦除信息的方法和装置

    公开(公告)号:US4712203A

    公开(公告)日:1987-12-08

    申请号:US743974

    申请日:1985-06-12

    摘要: Method and apparatus for processing information on a recording member having a recording film capable of recording and erasing information in accordance with the change of a magnetizing direction, by utilizing a light induced thermo-magnetic effect, in which before the intensity of the laser light is switched at the high level eliminating the magnetization of the recording film in order to effect the recording and erasing operations by focusing the laser light on the recording film as a light spot, a magnetic field with the predetermined direction according to the recording and erasing operations is previously applied on the recording film, whereby the recording and erasing operations of the magnetized information can be effected with high speed and stably by applying the normal magnetic field in the direction according to the recording and erasing operations respectively.

    摘要翻译: 用于在具有能够根据磁化方向的变化记录和擦除信息的记录膜的记录部件上的信息处理信息的方法和装置,通过利用光诱导的热磁效应,其中在激光强度为 切换到高电平消除了记录膜的磁化,以通过将激光聚焦在记录膜上作为光点来实现记录和擦除操作,根据记录和擦除操作具有预定方向的磁场是 先前施加在记录膜上,由此通过分别根据记录和擦除操作沿方向施加正常磁场,可以高速且稳定地进行磁化信息的记录和擦除操作。

    Optical information recording apparatus
    5.
    发明授权
    Optical information recording apparatus 失效
    光信息记录装置

    公开(公告)号:US4894816A

    公开(公告)日:1990-01-16

    申请号:US152803

    申请日:1988-02-05

    摘要: An optical information recording apparatus, in which marks having a desired shape are recorded at desired positions, independently of the patterns of recording pulses, while canceling influences of the heat conduction from the mark, which has been directly previously recorded, by controlling the energy at the front end portion of laser light pulses, depending on the interval from the directly preceding pulse, when recording medium is irradiated with the laser light pulses corresponding to recording pulses so as to record information.

    摘要翻译: 一种光学信息记录装置,其中具有期望形状的标记与记录脉冲的图案无关地记录在期望的位置,同时通过控制以前记录的能量来消除来自已经直接预先记录的标记的热传导的影响 当记录介质用对应于记录脉冲的激光脉冲照射以记录信息时,激光脉冲的前端部分取决于从前一个脉冲的间隔。

    Optical head with improved extinction ratio for magneto-optical memory
    6.
    发明授权
    Optical head with improved extinction ratio for magneto-optical memory 失效
    具有改善的光磁记忆消光比的光头

    公开(公告)号:US4672593A

    公开(公告)日:1987-06-09

    申请号:US750476

    申请日:1985-07-01

    IPC分类号: G11B11/105 G11B11/00 G11B7/00

    CPC分类号: G11B11/10532

    摘要: An optical head for a magneto-optical memory in which the major axis (the phase advance axis or phase lag axis) of optical anisotropy of a lens focusing a linearly polarized laser beam onto a magneto-optical recording medium is arranged to coincide with the direction of linear polarization of the laser beam incident upon the lens, thereby improving the extinction ratio.

    摘要翻译: 一种用于磁光存储器的光学头,其中将线偏振激光束聚焦到磁光记录介质上的透镜的光学各向异性的长轴(相位前进轴或相位延迟轴)布置成与方向 入射到透镜上的激光束的线偏振,从而提高消光比。

    GRINDING ABNORMALITY MONITORING METHOD AND GRINDING ABNORMALITY MONITORING DEVICE
    9.
    发明申请
    GRINDING ABNORMALITY MONITORING METHOD AND GRINDING ABNORMALITY MONITORING DEVICE 有权
    研磨异常监测方法和研磨异常监测装置

    公开(公告)号:US20140033830A1

    公开(公告)日:2014-02-06

    申请号:US13884777

    申请日:2011-12-22

    IPC分类号: B24B49/16 G01L5/00

    摘要: A grinding abnormality monitoring method and device for grinding a plurality of works of the same type are proposed which can improve the accuracy of judgment whether an abnormality is generated or not by properly setting a threshold value. According to the method or the device, by setting at least one of upper and lower limit values of a trial grinding load detected at the trial grinding of at least one of the works, an occurrence of grinding abnormality is judged when an actual grinding load detected at the actual grinding of work exceeds at least one of the upper and lower limit values thereof which varies depending on the time elapsed from the start of the actual grinding or a position of work relative to a grinding wheel.

    摘要翻译: 提出了一种用于研磨相同类型的多个作业的研磨异常监测方法和装置,其可以通过适当地设定阈值来提高判断是否产生异常的判断精度。 根据该方法或装置,通过设定在至少一个工件的试磨中检测到的试验研磨载荷的上限值和下限值中的至少一个,当检测到实际研磨载荷时,判断出磨削异常的发生 在实际的工件磨削中,超过其上下限值中的至少一个,这些上限值和下限值根据实际磨削开始时所经过的时间或相对于砂轮的工作位置而变化。

    Electric compressor
    10.
    发明授权
    Electric compressor 失效
    电动压缩机

    公开(公告)号:US08593099B2

    公开(公告)日:2013-11-26

    申请号:US12994659

    申请日:2009-04-28

    IPC分类号: G05B11/28

    摘要: Provided is an electric compressor whose manufacturing cost is reduced and in which a motor driving circuit can be positively protected. A temperature sensor is provided in the vicinity of a power semiconductor element whose temperature becomes highest among a plurality of power semiconductor elements and control of the number of revolutions of a motor is performed on the basis of temperatures detected by the temperature sensor, whereby it is possible to change the number of revolutions of the motor by using a temperature in the vicinity of a power semiconductor element in a position under the worst temperature conditions as a reference, and it becomes possible to positively protect an inverter circuit without the need for a plurality of temperature sensors.

    摘要翻译: 提供一种电动压缩机,其制造成本降低,并且可以有效地保护电动机驱动电路。 在多个功率半导体元件的温度变得最高的功率半导体元件附近设置温度传感器,并且基于由温度传感器检测的温度来执行电动机的转数的控制,由此, 可以通过使用在最差温度条件下的功率半导体元件附近的温度作为参考来改变电动机的转数,并且可以积极保护逆变器电路而不需要多个 的温度传感器。