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    • 74. 发明专利
    • Information recording material
    • 信息记录材料
    • JPS599094A
    • 1984-01-18
    • JP11849882
    • 1982-07-09
    • Asahi Chem Ind Co Ltd
    • NAKAO MASABUMIMORIMOTO ISAOMORI KOUICHI
    • B41M5/26G11B7/241G11B7/243
    • G11B7/257G11B7/00452G11B7/243G11B2007/24314G11B2007/25706Y10S430/146Y10S430/165
    • PURPOSE: To obtain an information recording material capable of giving excellent and stable recording even when lasers are irradiated from the transparent base plate side by interposing a chromium single layer between the base plate and a metal recording layer containing bismuth.
      CONSTITUTION: A metal recording layer 2 composed primarily of bismuth and a metal compound-stabilized layer 4 are laminated on a base plate 1, and a chromium single layer 3 is interposed between the base plate 1 and the metal recording layer 2 to obtain a desired information recording material. Said metal recording layer 2 is made of bismuth containing antimony of 0.16W0.30 atomic ratio, preferably 0.18W0.25 atomic ratio. The chromium single layer 3 may include a laminate structure consisting of the chromium single layer 3 and an other metal compound (e.g., an oxide of rare earth element) layer 3'. As the stabilized layer 4, a metal oxide of Si, Al, B, etc., is preferably used.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:为了获得能够通过在基板和含有铋的金属记录层之间插入铬单层从透明基板侧照射激光而能够提供优异且稳定的记录的信息记录材料。 构成:主要由铋和金属化合物稳定层4组成的金属记录层2层叠在基板1上,并且在基板1和金属记录层2之间插入铬单层3,以获得期望的 信息记录材料。 所述金属记录层2由含有0.16-0.30原子比,优选0.18-0.25原子比的锑的铋制成。 铬单层3可以包括由铬单层3和其它金属化合物(例如,稀土元素的氧化物)层3'组成的层叠结构。 作为稳定层4,优选使用Si,Al,B等的金属氧化物。
    • 77. 发明专利
    • Reproducing device, and optical path length servo control method
    • 再生设备和光路长度伺服控制方法
    • JP2012069190A
    • 2012-04-05
    • JP2010211896
    • 2010-09-22
    • Sony Corpソニー株式会社
    • MIURA TAKAHIROSUMI YOJIRO
    • G11B7/135G11B7/005
    • G11B7/1362G11B7/00452G11B7/0908G11B7/0938G11B7/13G11B7/1359G11B7/1365G11B7/1378G11B2007/0009
    • PROBLEM TO BE SOLVED: To suppress the deterioration of reproduction performance due to mark size fluctuation, or to improve multivalue reproduction performance in the case of performing multivalue recording by mark size modulation by reducing/expanding a reproduction signal amplitude difference of record marks due to respective different sizes in the case of adopting a bulk recording system.SOLUTION: A homodyne system is adopted as a signal reproduction system, and an offset for reducing or expanding an amplitude difference of a reproduction signal that occurs due to record mark size differences is applied to a servo loop of an optical path length servo performed by the homodyne system. If an optional offset is applied to the optical path length servo loop, a homodyne measuring axis can be tilted to an optional angle. Consequently, a difference in reproduction signal amplitude due to the size differences of the record marks can be reduced or expanded by performing such an offset application.
    • 要解决的问题:为了抑制由于标记尺寸波动引起的再现性能的劣化,或者通过缩小/扩展记录标记的再现信号幅度差来进行通过标记尺寸调制执行多值记录的情况下的多值再现性能 由于在采用批量记录系统的情况下各自的尺寸不同。 解决方案:采用零差系统作为信号再现系统,并且将由于记录标记尺寸差异而产生的再现信号的幅度差减小或扩大的偏移量应用于光路长度伺服机构的伺服环路 由零差系统执行。 如果光路长度伺服环路有可选偏移,则可以将零差测量轴倾斜到可选的角度。 因此,可以通过执行这样的偏移应用来减小或扩大由于记录标记的尺寸差引起的再现信号幅度的差异。 版权所有(C)2012,JPO&INPIT