公开(公告)号：US06353592B1

公开(公告)日：2002-03-05

申请号：US09242911

申请日：1999-06-09

申请人： Toshiyuki Kashiwagi ,  Tetsuhiro Sakamoto ,  Kiyoshi Ohsato

发明人： Toshiyuki Kashiwagi ,  Tetsuhiro Sakamoto ,  Kiyoshi Ohsato

IPC分类号： G11B724

CPC分类号： G11B7/252 ,  G11B7/0956 ,  G11B7/24053 ,  G11B7/24056 ,  G11B7/24067 ,  G11B7/2433 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2548 ,  G11B7/2585 ,  G11B7/26 ,  G11B2007/24304

摘要： The present invention provides an optical recording medium including a recording layer and a light-transmitting layer successively formed on one side of a substrate, so that a light is applied from the side of this light-transmitting layer for performing an information recording and/or reproduction. On the opposite side of the substrate not having the light-transmitting layer, a water-proof film consisting of at least one layer is formed. This suppresses the skew, enabling to improve the information recording and/or reproduction characteristics for a higher recording density. Furthermore, if the light-transmitting layer has a thickness t=3 to 177 micrometers in an information signal section of the recording medium, and a thickness fluctuation &Dgr;t ≦±5.26 (&lgr;/NA4) micrometers (wherein NA is a numerical aperture and &lgr; is a wavelength of the recording/reproduction optical system), it is possible to realize a high NA and a high capacity.

摘要翻译： 本发明提供了一种光记录介质，其包括依次形成在基板的一侧的记录层和透光层，使得从该透光层的侧面施加光以进行信息记录和/或 再生产。 在不具有透光层的基板的相反侧，形成由至少一层构成的防水膜。 这抑制了偏斜，使得能够改善用于更高记录密度的信息记录和/或再现特性。 此外，如果透光层在记录介质的信息信号部分中的厚度t = 3至177微米，并且厚度波动ΔTTAt<=±5.26（lambd / NA4）微米（其中NA是数值孔径， 羔羊是记录/再现光学系统的波长），可以实现高NA和高容量。

公开(公告)号：US06349086B2

公开(公告)日：2002-02-19

申请号：US09226701

申请日：1999-01-07

申请人： Masato Nishida ,  Tetsuhiro Sakamoto ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

发明人： Masato Nishida ,  Tetsuhiro Sakamoto ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

IPC分类号： G11B370

CPC分类号： G11B7/2542 ,  B29D17/005 ,  B29L2009/00 ,  G11B7/24 ,  G11B7/2433 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/254 ,  G11B7/2578 ,  G11B7/2585 ,  G11B7/26 ,  G11B7/266 ,  G11B2007/24304

摘要： An optical disc and its manufacturing method in which humps may be prohibited from being formed on an outer rim area of the disc to assure optimum surface properties of a light transmitting layer of the disc to contribute to further increase in recording capacity. On a substrate 2 of an optical disc 1 are sequentially formed a recording portion 6 and a light transmitting layer 5. The light falls on the light transmitting layer 5 to record and/or reproduce information signals for a signal recording area 6a of the substrate 2. The radial distance D from the outermost rim of the substrate 2 to the signal recording area 6a is selected to be larger than the radial width L of a hump 5a formed on the outer rim of the light transmitting layer 5. The hump 5a has a height h from the surface of the light transmitting layer 5 not larger than 70 &mgr;m.

摘要翻译： 一种光盘及其制造方法，其中可以禁止在盘的外缘区域上形成隆起，以确保光盘的光透射层的最佳表面特性有助于进一步提高记录容量。 在光盘1的基板2上顺序地形成有记录部6和透光层5.光落在透光层5上，以记录和/或再现基板2的信号记录区域6a的信息信号 选择从基板2的最外边缘到信号记录区域6a的径向距离D大于形成在透光层5的外缘上的隆起部5a的径向宽度L.隆起部5a具有 从透光层5的表面的高度h不大于70μm。

公开(公告)号：US06613396B1

公开(公告)日：2003-09-02

申请号：US09552220

申请日：2000-04-19

申请人： Masato Nishida ,  Tetsuhiro Sakamoto ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

发明人： Masato Nishida ,  Tetsuhiro Sakamoto ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

IPC分类号： G11B726

CPC分类号： G11B7/2542 ,  B29D17/005 ,  B29L2009/00 ,  G11B7/24 ,  G11B7/2433 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/254 ,  G11B7/2578 ,  G11B7/2585 ,  G11B7/26 ,  G11B7/266 ,  G11B2007/24304

摘要： An optical disc and its manufacturing method in which humps may be prohibited from being formed on an outer rim area of the disc to assure optimum surface properties of a light transmitting layer of the disc to contribute to further increase in recording capacity. On a substrate 2 of an optical disc 1 are sequentially formed a recording portion 6 and a light transmitting layer 5. The light falls on the light transmitting layer 5 to record and/or reproduce information signals for a signal recording area 6a of the substrate 2. The radial distance D from the outermost rim of the substrate 2 to the signal recording area 6a is selected to be larger than the radial width L of a hump 5a formed on the outer rim of the light transmitting layer 5. The hump 5a has a height h from the surface of the light transmitting layer 5 not larger than 70 &mgr;m.

公开(公告)号：US20130007781A1

公开(公告)日：2013-01-03

申请号：US13583883

申请日：2011-03-11

申请人： Tetsuhiro Sakamoto ,  Hirotaka Miyamoto ,  Jun Nakano ,  Kouichi Yasuda

发明人： Tetsuhiro Sakamoto ,  Hirotaka Miyamoto ,  Jun Nakano ,  Kouichi Yasuda

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： An optical recording medium is provided. The optical recording medium includes a multilayer including an N (N≦5) number of interfaces capable of reflecting incident light.

摘要翻译： 提供光记录介质。 光记录介质包括具有能够反射入射光的N（N＆nlE; 5）数个接口的多层。

公开(公告)号：US20120092977A1

公开(公告)日：2012-04-19

申请号：US13271498

申请日：2011-10-12

申请人： Tetsuhiro Sakamoto ,  Hisayuki Yamatsu ,  Hirotaka Miyamoto

发明人： Tetsuhiro Sakamoto ,  Hisayuki Yamatsu ,  Hirotaka Miyamoto

IPC分类号： G11B7/1374 ,  B05D3/06 ,  B05D5/06 ,  G11B7/242 ,  G11B7/26

CPC分类号： G11B7/259 ,  G11B7/00781 ,  G11B7/24044 ,  G11B7/2405 ,  G11B7/24062 ,  G11B7/258 ,  G11B2007/0009

摘要： An optical recording medium includes a recording layer in which recording of a mark is selectively performed in a depth direction by irradiation of first light, and the mark is formed in multilayer form; and a reflection film reflecting second light of a wavelength different from a wavelength of the first light, and provided on a lower layer side of the recording layer.

摘要翻译： 光记录介质包括记录层，其中通过照射第一光而在深度方向上选择性地进行标记的记录，并且标记形成为多层形式; 以及反射膜，其反射与第一光的波长不同的波长的第二光，并设置在记录层的下层侧。

公开(公告)号：US20110310723A1

公开(公告)日：2011-12-22

申请号：US13156625

申请日：2011-06-09

申请人： Tetsuhiro Sakamoto ,  Hisayuki Yamatsu

发明人： Tetsuhiro Sakamoto ,  Hisayuki Yamatsu

IPC分类号： G11B7/125

CPC分类号： G11B7/00452 ,  B82Y10/00 ,  G11B7/126 ,  G11B2007/0009

摘要： An optical information recording method includes emitting light having a wavelength λ1 from a first light source with a pulse width of time tw1 or more and power P1, emitting light having a wavelength λ2 from a second light source with a pulse width of time tw2, a repetition interval T, and power P2, and performing information recording by simultaneously irradiating an identical part of a recording medium with the light from the first light source and the light from the second light source, in which the wavelength λ1 and the wavelength λ2 satisfy λ1>500 nm>λ2 and λ0 which is expressed as 1/λ1+1/λ2=1/λ0 satisfies a relationship of λ0 P1.

摘要翻译： 一种光学信息记录方法，包括从具有时间tw1以上的脉冲宽度的第一光源发射具有波长λ1的光和从具有时间tw2的脉冲宽度的第二光源发射具有波长λ2的光的功率P1，a 重复间隔T和功率P2，并且通过用波长λ1和波长λ2满足λ1的来自第一光源的光和来自第二光源的光同时照射记录介质的相同部分来执行信息记录 > 500nm>λ2，表示为1 /λ1+ 1 /λ2= 1 /λ0的λ0满足λ0<300nm的关系，第一光源的发射和第二光源的发射满足tw2 < tw1，T P1。

公开(公告)号：US06944100B2

公开(公告)日：2005-09-13

申请号：US10384710

申请日：2003-03-11

申请人： Tetsuhiro Sakamoto ,  Yasuhito Tanaka ,  Kazuhiko Fujiie

发明人： Tetsuhiro Sakamoto ,  Yasuhito Tanaka ,  Kazuhiko Fujiie

IPC分类号： G11B20/10 ,  G11B7/004 ,  G11B7/007 ,  G11B11/105 ,  G11B20/12 ,  G11B20/18 ,  G11B11/00

CPC分类号： G11B20/1217 ,  G11B11/10508 ,  G11B11/10515 ,  G11B11/10528 ,  G11B11/10595 ,  G11B20/1833 ,  G11B20/1866 ,  G11B2020/1275 ,  G11B2220/2525

摘要： A magneto-optical recording/reproducing method is disclosed which causes a laser beam to be emitted to a disc recording medium having information recorded thereon earlier by magnetic field modulation, the laser beam causing the disc recording medium to develop a temperature distribution such as to generate a driving force for moving a domain wall of a magnetic domain in the medium so that the magnetic domain smaller in diameter than a spot of the laser beam is expanded sufficiently to let information recorded in the domain be detected. The method comprises the steps of: recording information to the disc recording medium while rotating the medium in a first rotating direction; and reproducing the information that was recorded to the disc recording medium in the recording step while rotating the medium in a second rotating direction reverse to the first rotating direction.

摘要翻译： 公开了一种磁光记录/再现方法，其使得激光束通过磁场调制早日发射到具有记录信息的盘记录介质，激光束使盘记录介质产生温度分布，从而产生 用于移动介质中的磁畴的畴壁的驱动力，使得直径比激光束的点小的磁畴被充分扩大，以便检测记录在该域中的信息。 该方法包括以下步骤：在沿第一旋转方向旋转介质的同时将信息记录到盘记录介质; 并且在与第一旋转方向相反的第二旋转方向上旋转介质的同时，在记录步骤中再现记录到盘记录介质的信息。

公开(公告)号：US20050099908A1

公开(公告)日：2005-05-12

申请号：US10950385

申请日：2004-09-28

申请人： Goro Fujita ,  Kazuhiko Fujiie ,  Yasuhito Tanaka ,  Kimihiro Saito ,  Tetsuhiro Sakamoto ,  Takeshi Miki

发明人： Goro Fujita ,  Kazuhiko Fujiie ,  Yasuhito Tanaka ,  Kimihiro Saito ,  Tetsuhiro Sakamoto ,  Takeshi Miki

IPC分类号： G11B7/24 ,  G11B5/09 ,  G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B27/24

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/00718

摘要： The present invention provides an optical disk drive and optical disk playback method, with an improved capability of reading address information from an optical disk having address information recorded thereon by wobbling one of side walls of a recording track, with a wider tilt margin.

摘要翻译： 本发明提供了一种光盘驱动器和光盘播放方法，其具有通过以更宽的倾斜余量摆动记录轨道的一个侧壁而从其上记录有地址信息的光盘读取地址信息的能力。

公开(公告)号：US06731589B2

公开(公告)日：2004-05-04

申请号：US09747721

申请日：2000-12-22

申请人： Tetsuhiro Sakamoto ,  Goro Fujita

发明人： Tetsuhiro Sakamoto ,  Goro Fujita

IPC分类号： G11B700

CPC分类号： G11B11/10584 ,  G11B7/00718 ,  G11B7/24076 ,  G11B7/253 ,  G11B7/2531 ,  G11B7/2534 ,  G11B7/26 ,  G11B11/10578 ,  G11B2007/24304

摘要： According to the present invention, when a land-groove recording method is adopted, thermal crosstalk between a land and an adjoining groove is suppressed effectively. Inhomogeneity of a recording layer between the land and groove is suppressed effectively. A substrate for optical recording media comprises groove-like concave parts (2) and convex parts each created between adjoining concave parts. A border sidewall (4) between a concave part and an adjoining convex part (2) has a plurality of sidewall planes, that is, at least a first sidewall plane (41) that leads to the bed of the concave part and a second sidewall plane (42) that leads to the apical plane of the convex part. The first sidewall plane meets the bed of the concave part at an angle ranging from 120° to less than 180°. The second sidewall plane meets the bed of the concave part at an angle ranging from 90° to 110°. A discontinuous part (6) is produced at least along a borderline between the first sidewall plane and second sidewall plane. The presence of the discontinuous part (6) is effective in minimizing thermal crosstalk between the concave part (2) and convex part (3) and suppressing inhomogeneity of a recording layer between a land and an adjoining groove.

摘要翻译： 根据本发明，当采用槽脊记录方法时，能够有效地抑制焊盘与邻接槽之间的热串扰。 有效地抑制了陆地和凹槽之间的记录层的不均匀性。 用于光学记录介质的基板包括槽状凹部（2）和分别形成在相邻的凹部之间的凸部。 在凹部和相邻的凸部（2）之间的边界侧壁（4）具有多个侧壁面，即至少第一侧壁面（41），其通向凹部的床，第二侧壁 平面（42），其导致凸部的顶端平面。 第一侧壁平面以120°至小于180°的角度与凹部的床相遇。 第二侧壁平面以90°至110°的角度与凹部的床相遇。 至少沿着第一侧壁平面和第二侧壁平面之间的边界线产生不连续部分（6）。 不连续部分（6）的存在有效地使凹部（2）和凸部（3）之间的热串扰最小化，并且抑制焊盘和相邻凹槽之间的记录层的不均匀性。

公开(公告)号：US08526284B2

公开(公告)日：2013-09-03

申请号：US13082564

申请日：2011-04-08

申请人： Tetsuhiro Sakamoto

发明人： Tetsuhiro Sakamoto

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： A multilayer optical recording medium includes a plurality of interfacial surfaces that reflect an incident light beam, and neighboring ones of the interfacial surfaces has a spacer therebetween. When a light incident surface side is defined as an upper surface side, a different thickness layer unit including the spacers having different thicknesses arranged sequentially is disposed on the lowermost layer side, and the spacers each having a thickness different from the thickness of any one of the spacers arranged in the different thickness layer unit are sequentially arranged above the different thickness layer unit.

摘要翻译： 多层光学记录介质包括反射入射光束的多个界面，并且相邻的界面具有间隔物。 当光入射面侧被定义为上表面侧时，在最下层侧设置包括依次布置的具有不同厚度的间隔物的不同厚度层单元，并且每个间隔物的厚度不同于 布置在不同厚度层单元中的间隔件依次布置在不同厚度层单元的上方。