会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 64. 发明授权
    • Magneto-optical recording apparatus using the magnetic field modulation
method
    • 使用磁场调制方法的磁光记录装置
    • US5331612A
    • 1994-07-19
    • US922854
    • 1992-07-31
    • Yoshiteru MurakamiKenji OhtaAkira Takahashi
    • Yoshiteru MurakamiKenji OhtaAkira Takahashi
    • G11B5/02G11B11/10G11B11/105G11B13/04
    • G11B11/10521G11B11/10508G11B11/1051G11B11/10528G11B11/1053G11B11/10595
    • A magneto-optical recording apparatus which records information through the processes of: first irradiating a light beam onto a magneto-optical recording medium having a recording film; and next applying an external magnetic field that is inverted in response to a recording signal onto the recording film while continuing the first process. In the above arrangement, the intensity of the light beam is dropped upon inversion of the external magnetic field so that information is not recorded. The intensity of the light beam is raised during non-inversion of the external magnetic field so that information is recorded. Further the magneto-optical recording apparatus is provided with a light intensity control device for varying the intensity of the light beam dependent of the lengths of recording bits so that the high-temperature area of the recording film is not widened. Since the width of the recording bits is uniformly maintained, the remaining of the recording bit after overwriting operation can be reduced; thus, the signal quality in reproduction can be enhanced.
    • 一种磁光记录装置,其通过以下处理记录信息:首先将光束照射到具有记录膜的磁光记录介质上; 并且接着在继续进行第一处理的同时将响应于记录信号反转的外部磁场施加到记录膜上。 在上述布置中,光束的强度在外部磁场反转时下降,从而不记录信息。 在外部磁场的非反相期间,光束的强度升高,从而记录信息。 此外,磁光记录装置设置有光强度控制装置,用于根据记录位的长度改变光束的强度,使得记录膜的高温区域不会变宽。 由于记录位的宽度被均匀地保持,所以可以减少重写操作之后的记录位的剩余部分。 因此,可以提高再现中的信号质量。
    • 68. 发明授权
    • Magneto-optical recording medium and method for processing the surface
    • 磁光记录介质及表面处理方法
    • US5427833A
    • 1995-06-27
    • US175957
    • 1993-12-30
    • Junichiro NakayamaYoshiteru MurakamiHiroyuki KatayamaKenji Ohta
    • Junichiro NakayamaYoshiteru MurakamiHiroyuki KatayamaKenji Ohta
    • G11B11/10B29C59/02B29L17/00G11B5/60G11B7/26G11B11/105G11B5/66
    • G11B5/6005G11B11/1058G11B11/10584Y10S428/90Y10S428/928Y10T428/218Y10T428/24355Y10T428/31935
    • A surface of a magneto-optical recording medium of the present invention is textured with fine and physical protrusions and recessions. The shapes of physical protrusions and recessions vary at each radial locations on the medium such that, for example, rough protrusions and recessions are formed in inner parts of the recording medium and fine protrusions and recessions are formed in outer parts thereof. Therefore, floating force given to a floating head from the medium being rotated based on the constant angular velocity method through an air layer in the outer parts equals floating force in the inner parts. Consequently, since the floating height of the floating head becomes constant irrespective of radial locations on the medium, information can be recorded under constant recording conditions, permitting the accuracy of the recording to improve. Regarding a method for processing the surface of a magneto-optical recording medium relating to the present invention, for example, a texture tape whose roughness is large is used in inner parts of the medium while a texture tape whose roughness is small is used in outer parts thereof. As a result, a magneto-optical recording medium having the above characteristics is produced.
    • 本发明的磁光记录介质的表面具有精细和物理的突出和凹陷的纹理。 物理突起和凹陷的形状在介质上的每个径向位置处变化,使得例如在记录介质的内部形成粗糙的突起和凹陷,并且在其外部形成微小的突起和凹陷。 因此,通过外部部分中的空气层,基于恒定的角速度法,从介质旋转的浮动浮动力等于内部部分的浮力。 因此,由于浮动头的浮动高度与介质上的径向位置无关地变得恒定,所以可以在恒定的记录条件下记录信息,从而可以提高记录的准确性。 关于本发明的磁光记录介质的表面的处理方法,例如,在粗糙度小的纹理带用于外部的粗糙度较小的纹理带时,粗糙度大的纹理带用于介质的内部, 其部分。 结果,产生具有上述特性的磁光记录介质。
    • 70. 发明授权
    • Magneto-optical recording medium and method for processing the surface
    • 磁光记录介质及表面处理方法
    • US5328740A
    • 1994-07-12
    • US650283
    • 1991-02-04
    • Junichiro NakayamaYoshiteru MurakamiHiroyuki KatayamaKenji Ohta
    • Junichiro NakayamaYoshiteru MurakamiHiroyuki KatayamaKenji Ohta
    • G11B11/10B29C59/02B29L17/00G11B5/60G11B7/26G11B11/105B32B3/02B32B3/10G11B5/66
    • G11B5/6005G11B11/1058G11B11/10584Y10S428/90Y10S428/928Y10T428/218Y10T428/24355Y10T428/31935
    • A surface of a magneto-optical recording medium of the present invention is textured with fine and physical protrusions and recessions. The shapes of physical protrusions and recessions vary at each radial locations on the medium such that, for example, rough protrusions and recessions are formed in inner parts of the recording medium and fine protrusions and recessions are formed in outer parts thereof. Therefore, floating force given to a floating head from the medium being rotated based on the constant angular velocity method through an air layer in the outer parts equals floating force in the inner parts. Consequently, since the floating height of the floating head becomes constant irrespective of radial locations on the medium, information can be recorded under constant recording conditions, permitting the accuracy of the recording to improve. Regarding a method for processing the surface of a magneto-optical recording medium relating to the present invention, for example, a texture tape whose roughness is large is used in inner parts of the medium while a texture tape whose roughness is small is used in outer parts thereof. As a result, a magneto-optical recording medium having the above characteristics is produced.
    • 本发明的磁光记录介质的表面具有精细和物理的突出和凹陷的纹理。 物理突起和凹陷的形状在介质上的每个径向位置处变化,使得例如在记录介质的内部形成粗糙的突起和凹陷,并且在其外部形成微小的突起和凹陷。 因此,通过外部部分中的空气层,基于恒定的角速度法,从介质旋转的浮动浮动力等于内部部分的浮力。 因此,由于浮动头的浮动高度与介质上的径向位置无关地变得恒定,所以可以在恒定的记录条件下记录信息,从而可以提高记录的准确性。 关于本发明的磁光记录介质的表面的处理方法,例如,在粗糙度小的纹理带用于外部的粗糙度较小的纹理带时,粗糙度大的纹理带用于介质的内部, 其部分。 结果,产生具有上述特性的磁光记录介质。