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1. 发明授权

US06480450B1 Method and apparatus for recording optical information by varying recording pulse width 失效
标题翻译：通过改变记录脉冲宽度来记录光学信息的方法和装置
公开(公告)号：US06480450B1
公开(公告)日：2002-11-12
申请号：US09491781
申请日：2000-01-26
申请人： Toru Fujii , Ryou Negishi , Masahiko Hirano
发明人： Toru Fujii , Ryou Negishi , Masahiko Hirano
IPC分类号： G11B7125
CPC分类号： G11B7/126 , G11B7/00451
摘要： A method and an apparatus capable of recording optical information at high density are disclosed. A recording pulse which includes a top pulse followed by a multiple pulse set is generated to form a pit, wherein, based on the distance from the top pulse, either pulse widths of pulses within the multiple pulse set are set to be sequentially smaller or pulse intervals of pulses within the multiple pulse set are set to be sequentially larger.
摘要翻译：公开了能够以高密度记录光学信息的方法和装置。产生一个记录脉冲，其中包括一个后面跟着多个脉冲组的顶部脉冲，以形成一个凹坑，其中，基于与顶部脉冲的距离，将多个脉冲组内的脉冲的脉冲宽度设置为依次变小或脉冲将多脉冲组内的脉冲间隔设定为依次较大。

2. 发明授权

US06452899B1 Optical information medium and recording method therefor 有权
标题翻译：光信息媒体及其记录方法
公开(公告)号：US06452899B1
公开(公告)日：2002-09-17
申请号：US09340212
申请日：1999-06-25
申请人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
发明人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/24079 , G11B7/24076
摘要： An optical information medium, comprising: a transparent substrate for penetrating a recording laser beam therethrough; a recording layer being formed on the transparent substrate; and a reflective layer being formed on the recording layer and for reflecting reproducing laser beam thereupon. A numerical aperture of an objective lens of an optical pickup for irradiating the recording laser beam on the recording layer is approximately 0.65, and the numerical aperture of an objective lens of the optical pickup for irradiating the recording laser beam on the reflection layer is approximately 0.60. An inclination angle &thgr; at both edges of the groove for tracking, being formed spiral-like on the surface of the transparent substrate on which the recording layer is formed, with respect to the main surface of the transparent substrate is selected from 55° to 75°. An index &agr;, being expressed by 1−Dr/Ds when assuming that depth of the groove on the transparent substrate is Ds and depth of the recording layer at position of said groove is Dr, is selected from 0.2 to 0.4. Further, full width at half maximum of the groove on the transparent substrate is selected to be from one-third (⅓) to a half (½) of the pitch p of the groove. With this optical information medium, it is possible to record high density signals as signals being readable optically, as well as to record them with stability.
摘要翻译：一种光学信息介质，包括：用于穿过其中的记录激光束的透明基板; 在所述透明基板上形成记录层; 并且反射层形成在记录层上并用于反射再现激光束。用于将记录激光束照射在记录层上的用于照射记录激光束的光学拾取器的物镜的数值孔径大约为0.65，用于将记录激光束照射在反射层上的光学拾取器的物镜的数值孔径大约为0.60 。在透明基板的形成有透明基板的表面上相对于透明基板的主表面形成螺旋状的用于跟踪的凹槽的两个边缘处的倾斜角θ选自55°至75° °。当假定透明基板上的凹槽的深度为Ds并且在所述凹槽的位置处的记录层的深度为Dr时，由1-Dr / Ds表示的索引α选自0.2至0.4。此外，透明基板上的凹槽的最大半峰宽选择为凹槽的间距p的三分之一（1/3）至1/2（1/2）。利用该光学信息介质，可以将高密度信号记录为可光学读取的信号，并且可以稳定地记录它们。

3. 发明授权

US06728198B2 Optical information medium and recording method therefor 有权
标题翻译：光信息媒体及其记录方法
公开(公告)号：US06728198B2
公开(公告)日：2004-04-27
申请号：US10162300
申请日：2002-06-04
申请人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
发明人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/24079 , G11B7/24076
摘要： An optical information medium made up of a transparent substrate capable of allowing a recording laser beam to penetrate therethrough; a recording layer formed on the transparent substrate; and a reflective layer formed on the recording layer and reflecting a reproducing laser beam thereupon. A numerical aperture of an objective lens of an optical pickup for irradiating the recording laser beam on the recording layer is approximately 0.65, and the numerical aperture of an objective lens of the optical pickup for irradiating the recording laser beam on the reflection layer is approximately 0.60. An inclination angle &thgr; at both edges of the groove for tracking, being formed spirally on the surface of the transparent substrate on which the recording layer is formed, with respect to the main surface of the transparent substrate, is selected to be from 55° to 75°. An index ∝, expressed by 1−Dr/Ds when assuming that the depth of the groove on the transparent substrate is Ds and the depth of the recording layer at the position of said groove is Dr, is selected to be from 0.2 to 0.4. Further, the full width at half maximum of the groove on the transparent substrate is selected to be from one-third (⅓) to a half (½) of the pitch p of the groove. With this optical information medium, it is possible to record high density signals as signals that are readable optically, as well as to record them with stability.
摘要翻译：由能够使记录激光束透过的透明基板构成的光信息介质; 形成在所述透明基板上的记录层; 以及形成在记录层上并在其上反射再现激光束的反射层。用于将记录激光束照射在记录层上的用于照射记录激光束的光学拾取器的物镜的数值孔径大约为0.65，用于将记录激光束照射在反射层上的光学拾取器的物镜的数值孔径大约为0.60 。在形成有记录层的透明基板的表面上相对于透明基板的主表面螺旋地形成用于跟踪的凹槽的两个边缘处的倾斜角度θ选择为55°至 75°。当假设透明基板上的凹槽的深度为Ds并且记录层在所述凹槽的位置的深度为Dr时，由1-Dr / Ds表示的折射率α被选择为0.2至0.4。此外，透明基板上的凹槽的最大半宽选择为凹槽的间距p的三分之一（1/3）至半（1/2）。利用该光学信息介质，可以将高密度信号记录为可光学读取的信号，并且可以稳定地记录它们。

4. 发明授权

US06711118B1 Optical information recording medium for recording optically reproducible signals thereon through the use of a recording laser beam and method for recording optical information thereon 有权
标题翻译：用于通过使用记录激光束在其上记录光可再现信号的光学信息记录介质和用于在其上记录光学信息的方法
公开(公告)号：US06711118B1
公开(公告)日：2004-03-23
申请号：US09506917
申请日：2000-02-18
申请人： Toshiaki Tajima , Toru Fujii , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
发明人： Toshiaki Tajima , Toru Fujii , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/24076 , G11B7/24079
摘要： An optical information recording medium provides a high reflectance of a laser beam and thus enables an accurate tracking servo. The optical information recording medium, for recording optically readable signals thereon through the use of a recording laser beam, includes a light transmitting substrate, a tracking groove formed on a surface of the light transmitting substrate, a land formed between two neighboring tracks of the tracking groove, a recording layer formed on a surface of the light transmitting substrate on which the tracking groove and the land are provided, and a reflective layer formed on the recording layer for reflecting the recording laser beam. A top width D of the land is arranged to be within the range of about 0.30≦D≦0.45 &mgr;m.
摘要翻译：光学信息记录介质提供激光束的高反射率，从而能够进行精确的跟踪伺服。用于通过使用记录激光束在其上记录光可读信号的光学信息记录介质包括透光衬底，形成在透光衬底的表面上的跟踪槽，形成在跟踪的两个相邻迹道之间的焊盘槽，形成在其上设置有跟踪槽和焊盘的光透射基板的表面上的记录层，以及形成在记录层上用于反射记录激光束的反射层。土地的顶部宽度D被布置在约0.30 <= D <= 0.45MUM的范围内。

5. 发明授权

US06721265B1 High-density optical information recording medium and a substrate and a stamper for the manufacture thereof 有权
标题翻译：高密度光学信息记录介质及其制造用基板和压模
公开(公告)号：US06721265B1
公开(公告)日：2004-04-13
申请号：US09506915
申请日：2000-02-18
申请人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
发明人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/24079 , G11B7/24076
摘要： An optical information recording medium enables accurate tracking servo throughout the recording area including inner and outer peripheral region by way of reducing the differences between the amplitudes of the push-pull signals from those regions. The medium comprises a light transmitting substrate, a tracking groove formed on a surface of the light transmitting substrate, a recording layer formed on the surface of the substrate having the groove, and a reflective layer, formed on the recording layer, for reflecting recording and reproducing laser beams. The width of the groove at the outer peripheral region is made smaller than that at the inner peripheral region. Specifically, the ratio of the width at the outer peripheral region to that at the inner peripheral region is set to be greater than or equal to 0.8.
摘要翻译：光学信息记录介质通过减少来自这些区域的推挽信号的振幅之间的差异，能够在包括内外周区域的整个记录区域内实现精确的跟踪伺服。介质包括透光基板，形成在透光基板的表面上的跟踪槽，形成在具有凹槽的基板的表面上的记录层和形成在记录层上的反射层，用于反射记录和再现激光束。外周区域的槽宽度比内周区域的宽度小。具体地说，将外周区域的宽度与内周区域的宽度的比率设定为大于等于0.8。

6. 发明授权

US5895697A Optical information medium 失效
标题翻译：光信息媒体
公开(公告)号：US5895697A
公开(公告)日：1999-04-20
申请号：US955156
申请日：1997-10-21
申请人： Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada , Toru Fujii
发明人： Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada , Toru Fujii
IPC分类号： G11B5/62 , B32B3/00
CPC分类号： G11B5/62 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： An optical information medium comprises a first disc forming information recording layer on a main surface thereof, a second disc being bonded to the first disc at the surface where the information recording layer is formed by way of an adhesive. A hydrophilic resin film is formed on the surface of the disc at the inner peripheral side extending from the center hole to the information non-recording area. The hydrophilic resin film is damp and is rough compared with the other portion formed of non-hydrophilic resin, and it is elastic. The characters, patterns or designs can be printed on the optical information medium using water-base ink, etc. after manufacturing the optical information medium. Further, the hydrophilic resin film is formed on the disc at the portion outside the information recording area. Further, when the hydrophilic resin film is formed, the surface of the inner and outer peripheral portions of the optical information medium protuberates slightly thicker than other portion so that the fats of the fingers is hardly stuck to the recording surface of the optical information medium even if the inner and outer peripheral portions of the disc is grasped by hand.
摘要翻译：光学信息介质包括在其主表面上的第一盘形成信息记录层，在通过粘合剂形成信息记录层的表面处将第二盘结合到第一盘。在从中心孔延伸到信息非记录区域的内周侧的盘的表面上形成亲水性树脂膜。与非亲水性树脂形成的其它部分相比，亲水性树脂膜是潮湿的，并且是弹性的。在制造光学信息介质之后，可以使用水基油墨等在光学信息介质上印刷字符，图案或设计。此外，在信息记录区域外的部分的盘上形成亲水性树脂膜。此外，当形成亲水性树脂膜时，光学信息介质的内周和外周部分的表面突出比其它部分稍厚，使得手指的脂肪几乎不粘附到光信息介质的记录表面，甚至如果用手握住盘的内外周部分。

7. 发明授权

US06493312B1 Optical information medium 有权
标题翻译：光信息媒体
公开(公告)号：US06493312B1
公开(公告)日：2002-12-10
申请号：US09351845
申请日：1999-07-13
申请人： Ryou Negishi , Toshiaki Tajima , Toru Fujii , Emiko Hamada
发明人： Ryou Negishi , Toshiaki Tajima , Toru Fujii , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/00745 , G11B7/24 , G11B7/24079 , G11B7/24085
摘要： An optical information medium is made up of a transparent substrate for a reproducing laser beam to penetrate therethrough, a recording layer formed on the transparent substrate and a reflective layer for reflecting the reproducing laser beam thereupon, thereby enabling the recording of optically readable signals by a recording laser beam incident upon the transparent substrate. This optical information medium has a spiral-like tracking guide on a side surface of the transparent substrate, on which the recording layer is formed, and on lands defined between the spiral-like tracking guide are formed land pre pits indicative of the sector information, including the address and so on, wherein the length of the land pre pits is selected to be from 50% to 83% of the length of the minimum pit and to be from 1.5 to 2.5 times the length of the channel clock. Also, the film thickness of the recording layer in the area of the land pre pits is selected to differ from the film thickness of the recording layer in the area of the tracking guide.
摘要翻译：光学信息介质由用于再现激光束透过的透明基板，形成在透明基板上的记录层和用于反射其上的再现激光束的反射层组成，从而能够通过光学可读信号记录光学可读信号记录入射到透明基板上的激光束。该光学信息介质在透明基板的形成有记录层的侧面上具有螺旋形跟踪引导件，并且在螺旋状跟踪引导件之间形成的焊盘上形成指示扇区信息的焊盘预先凹坑，包括地址等，其中，土地预制坑的长度被选择为最小坑的长度的50％至83％，并且是通道时钟的长度的1.5至2.5倍。此外，选择区域预凹坑区域中的记录层的膜厚度与跟踪引导件的区域中的记录层的膜厚度不同。

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