公开(公告)号：US5182734A

公开(公告)日：1993-01-26

申请号：US465123

申请日：1990-02-20

Applicant: Tetsu Watanabe ,  Tetsuji Kawashima ,  Goro Fujita

Inventor： Tetsu Watanabe ,  Tetsuji Kawashima ,  Goro Fujita

IPC: G11B11/10 ,  G11B11/105 ,  G11B19/14 ,  G11B33/14

CPC classification number: G11B33/144 ,  G11B11/10508 ,  G11B11/10513 ,  G11B11/1053 ,  G11B11/10595 ,  G11B19/14

Abstract: In a magneto-optical recording apparatus, in which light spots are sequentially formed on a magneto-optical disk at the timing of a predetermined reference clock signal while a modulating magnetic field, which is reversed in polarity as a function of record data in synchronism with the reference clock signals, is applied to the disk for magnetically recording the record data thereon; the timing of polarity reversal of the modulating magnetic field with respect to the reference clock signal is delayed as a function of the magnetic and/or temperature characteristics of the magneto-optical disk to permit a magnetized domain to be formed at the correct position with respect to the timing of the reference clock signal. The intensity and/or duration of intermittent energizing of the light beam is controlled as a function of the ambient temperature of the magneto-optical disk and/or the radial sweeping position of the light spot to permit each magnetized domain to be formed at the correct position with respect to the timing of the reference clock signal.

Abstract translation: PCT No.PCT / JP89 / 00612 Sec。 371日期1990年2月20日 102（e）1990年2月20日PCT PCT 1991年6月19日PCT公布。 WO89 / 12889 PCT公开号 日期为1989年12月28日。在磁光记录装置中，在预定的基准时钟信号的定时将光斑依次形成在磁光盘上，同时将极性反转的调制磁场作为 将与参考时钟信号同步的记录数据的功能应用于用于在其上磁记录记录数据的磁盘; 相对于参考时钟信号的调制磁场的极性反转的定时被延迟为磁光盘的磁性和/或温度特性的函数，以允许磁化域形成在与 到参考时钟信号的定时。 光束的间歇激励的强度和/或持续时间被控制为光磁盘的环境温度和/或光斑的径向扫掠位置的函数，以允许每个磁化域形成在正确的 相对于参考时钟信号的定时的位置。

公开(公告)号：US5170385A

公开(公告)日：1992-12-08

申请号：US603312

申请日：1990-10-25

Applicant: Susumu Senshu ,  Tamotsu Yamagami ,  Shigeaki Wachi ,  Tetsu Watanabe

Inventor： Susumu Senshu ,  Tamotsu Yamagami ,  Shigeaki Wachi ,  Tetsu Watanabe

IPC: G11B20/12 ,  G11B7/00 ,  G11B7/004 ,  G11B7/007 ,  G11B7/24

CPC classification number: G11B7/00745

Abstract: A recording medium in which one sector is divided into a plurality of segments and information is recorded in the segments, uses a reproducing method in which information is reproduced optically from this medium. The recording medium has an area in which no embossed pit is formed beforehand comprising at least one segment among a plurality of segments, and embossed pits indicative of the head of the sector which is formed in correspondence to the head position of the sector. Clocks are reproduced by detecting the pit for clock reproduction on the basis of the area in the recording medium in which no embossed pit is formed beforehand. The head position of the sector is detected by detecting whether the pit indicative of the head of the sector is present or not at a timing based on the clock. With this method, the head position of the sector can be detected correctly even if information was recorded by a modulating system in which all signal patterns can exist according to the modulating rule.

公开(公告)号：US4559568A

公开(公告)日：1985-12-17

申请号：US459129

申请日：1983-01-19

Applicant: Tetsu Watanabe ,  Masato Tanaka

Inventor： Tetsu Watanabe ,  Masato Tanaka

IPC: G11B20/12 ,  G11B20/18 ,  G11B27/032 ,  G11B27/036 ,  G11B27/30 ,  G11B27/36 ,  G11B5/09 ,  G06F11/00 ,  G06F11/10

CPC classification number: G11B20/1204 ,  G11B20/1809 ,  G11B27/036 ,  G11B27/3027 ,  G11B20/1202 ,  G11B2020/183 ,  G11B27/032 ,  G11B27/36

Abstract: An apparatus for re-recording a new digital signal in a track on a magnetic record medium which has a previously recorded digital signal in the track, the digital signal being arranged in data blocks each containing a sync signal, a data signal, an error correction code signal, and an error detection code signal, comprises a reproducing circuit which reproduces each digital signal recorded on the magnetic record medium, a code generating circuit which supplies a discriminating code signal for each of the data blocks, and a recording circuit which re-records the new digital signal and the respective discriminating code signals in the track on the magnetic record medium.

Abstract translation: 一种用于在磁记录介质上的轨道中重新记录新的数字信号的装置，该磁记录介质在轨道中具有先前记录的数字信号，数字信号被布置在每个包含同步信号，数据信号，纠错 代码信号和错误检测码信号，包括再现记录在磁记录介质上的每个数字信号的再现电路，为每个数据块提供鉴别码信号的代码产生电路， 在磁记录介质上的轨道中记录新的数字信号和相应的鉴别码信号。

公开(公告)号：US07454771B2

公开(公告)日：2008-11-18

申请号：US11925509

申请日：2007-10-26

Applicant: Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

Inventor： Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

IPC: G11B7/24

CPC classification number: B29C69/001 ,  B29C2793/0009 ,  B29L2017/005 ,  G11B7/007 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24085 ,  G11B11/10508 ,  G11B11/10582 ,  G11B17/03 ,  G11B23/0035 ,  G11B23/0307 ,  G11B23/0308 ,  G11B23/0317

Abstract: An optical recording medium is provided which has a substrate and a signal recording layer provided on the substrate and in which an information signal is recorded in the form of microscopic pits. A light beam is focused on the signal recording layer and some change of the light beam carried by a return light from the signal recording layer is detected to read the information signal recorded on the signal recording layer. The optical recording medium has a diameter of 65 mm or less and a thickness of 0.4 to 0.7 mm. An information signal recording area extends outwardly from a radial position of 12.5 mm or less from the center of the medium. The ratio in area between the information signal recording area and non-signal recording area is 3.4 or more. The storage capacity of this medium is 2 gigabytes or more. The optical recording medium has formed at the center thereof a center hole around which an annular table-abutment convexing to one side of the medium is formed. A magnetic-clamping hub is installed in the center hole and thus the medium is magnetically clamped to a rotation driving mechanism of an optical recording and/or reproducing apparatus. The compactness and high density of recording of the optical recording medium will contribute greatly to a further compact structure of a recording and/or reproducing apparatus in which the medium is to be used.

Abstract translation: 提供了一种光记录介质，其具有基板和设置在基板上的信号记录层，其中以微观凹坑的形式记录信息信号。 光束聚焦在信号记录层上，并且检测由来自信号记录层的返回光所携带的光束的一些变化，以读取记录在信号记录层上的信息信号。 光记录介质的直径为65mm以下，厚度为0.4〜0.7mm。 信息信号记录区域从介质中心的12.5mm或更小的径向位置向外延伸。 信息信号记录区域与非信号记录区域之间的面积比为3.4以上。 该介质的存储容量为2 GB或更多。 光记录介质在其中心处形成有中心孔，在该中心孔处形成有凸起到介质一侧的环形台面邻接。 磁性夹紧轮毂安装在中心孔中，因此介质被磁力夹紧到光学记录和/或再现装置的旋转驱动机构。 光记录介质的紧凑性和高密度记录对于使用介质的记录和/或再现装置的进一步紧凑结构将有很大的贡献。

公开(公告)号：US07256950B2

公开(公告)日：2007-08-14

申请号：US11223947

申请日：2005-09-13

Applicant: Masahiro Yamada ,  Akira Kouchiyama ,  Tetsu Watanabe

Inventor： Masahiro Yamada ,  Akira Kouchiyama ,  Tetsu Watanabe

IPC: G02B9/00 ,  B29D11/00

CPC classification number: G02B6/4214 ,  G02B3/0087 ,  G02B6/262 ,  G02B6/30 ,  G02B6/4203 ,  G02B6/4204 ,  G02B6/4246

Abstract: A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled in this concavity. A second optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from the first optical material, and the base comprises first and second faces facing each other, a first concavity is formed in the first face and a second concavity is formed in the second face, and the second optical material is filled in the first and second concavities.

Abstract translation: 根据本发明的第一光学装置包括由第一光学材料制成的基底和具有与第一光学材料的折射率不同的折射率的第二光学材料，并且基底具有凹陷，并且第二光学材料被填充 在这个凹处。 根据本发明的第二光学装置包括由第一光学材料制成的基底和具有不同于第一光学材料的折射率的第二光学材料，并且基底包括彼此相对的第一和第二面，第一凹部为 形成在第一面上，在第二面上形成第二凹部，第二光学材料填充在第一和第二凹部中。

公开(公告)号：US06898027B2

公开(公告)日：2005-05-24

申请号：US10470760

申请日：2002-12-04

Applicant: Masahiro Yamada ,  Takahiro Miura ,  Takakiyo Kanazawa ,  Tetsu Watanabe ,  Sunao Aoki

Inventor： Masahiro Yamada ,  Takahiro Miura ,  Takakiyo Kanazawa ,  Tetsu Watanabe ,  Sunao Aoki

IPC: G02B5/00 ,  G02B3/00 ,  G02B13/00 ,  G11B7/135 ,  G02B9/00 ,  B29D11/00 ,  G02B9/08

CPC classification number: G11B7/1374 ,  G11B7/1378 ,  G11B7/1387 ,  G11B7/139

Abstract: An optical element and manufacturing method of the present invention prevent the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element is configured from at least one substrate having a plurality of lens substrates that have embedded lenses made of a material with a higher refractive index than the at least one substrate. A shielding means limits the optical path so that incident light propagates only within a prescribed optical path formed on a light incidence-side or emission-side surface of one of the lens substrates. In addition, the shielding means is formed from an absorptive or reflective film placed in a region outside the prescribed optical path or through machining the region outside the prescribed optical path.

Abstract translation: 本发明的光学元件和制造方法防止光入射在光学元件的不必要部分上，从而消除杂散光和噪声。 所述光学元件由具有多个透镜基板的至少一个基板构成，所述多个透镜基板具有由比所述至少一个基板更高的折射率的材料制成的嵌入式透镜。 屏蔽装置限制光路，使得入射光仅在形成在一个透镜基板的光入射侧或发射侧表面上的规定光路内传播。 此外，屏蔽装置由放置在规定光路外部的区域的吸收或反射膜形成，或者通过加工规定光路外部的区域形成。

公开(公告)号：US06896419B2

公开(公告)日：2005-05-24

申请号：US10471806

申请日：2003-01-17

Applicant: Masahiro Yamada ,  Tetsu Watanabe

Inventor： Masahiro Yamada ,  Tetsu Watanabe

IPC: G02B6/024 ,  G02B6/26 ,  G02B6/27 ,  G02B6/36 ,  G02B6/42 ,  H01L31/12

CPC classification number: G11B7/1384 ,  G02B6/262 ,  G02B6/4203 ,  G02B6/4206 ,  G02B6/4208 ,  G02B6/4218

Abstract: An optical pickup using an optical fiber module which includes optical fibers is provided, which can be small-sized and utilize a light beam from a light source at high efficiency. The optical pickup includes: an optical fiber module 20, in which an optical fiber 10 consists of: a first optical fiber 11 which is a field-distribution converting fiber and a second optical fiber 12 whose core has birefringence, both the optical fibers 11 and 12 are connected to each other at one end thereof, and the laser light beam L emitted from the semiconductor laser 1 is made to enter the other end of the first optical fiber 11; an optical head having at least an objective lens; an optical detector; wherein the optical fiber 10 is used as optical wiring to lead the laser light beam L emitted from the semiconductor laser 1 into the optical head.

公开(公告)号：US06825995B2

公开(公告)日：2004-11-30

申请号：US09842021

申请日：2001-04-26

Applicant: Masahiro Yamada ,  Akira Kouchiyama ,  Tetsu Watanabe

Inventor： Masahiro Yamada ,  Akira Kouchiyama ,  Tetsu Watanabe

IPC: G02B900

CPC classification number: G02B6/4214 ,  G02B3/0087 ,  G02B6/262 ,  G02B6/30 ,  G02B6/4203 ,  G02B6/4204 ,  G02B6/4246

Abstract: A first optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from that of the first optical material, and the base has a concavity, and the second optical material is filled in this concavity. A second optical device according to the present invention comprises a base made of a first optical material and a second optical material having a refractive index different from the first optical material, and the base comprises first and second faces facing each other, a first concavity is formed in the first face and a second concavity is formed in the second face, and the second optical material is filled in the first and second concavities.

Abstract translation: 根据本发明的第一光学装置包括由第一光学材料制成的基底和具有与第一光学材料的折射率不同的折射率的第二光学材料，并且基底具有凹陷，并且第二光学材料被填充 在这个凹处。 根据本发明的第二光学装置包括由第一光学材料制成的基底和具有不同于第一光学材料的折射率的第二光学材料，并且基底包括彼此相对的第一和第二面，第一凹部为 形成在第一面上，在第二面上形成第二凹部，第二光学材料填充在第一和第二凹部中。

公开(公告)号：US06747943B2

公开(公告)日：2004-06-08

申请号：US10040205

申请日：2001-10-29

Applicant: Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

Inventor： Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

IPC: G11B2303

CPC classification number: B29C69/001 ,  B29C2793/0009 ,  B29L2017/005 ,  G11B7/007 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24085 ,  G11B11/10508 ,  G11B11/10582 ,  G11B17/03 ,  G11B23/0035 ,  G11B23/0307 ,  G11B23/0308 ,  G11B23/0317

Abstract: An optical recording medium is provided which has a substrate and a signal recording layer provided on the substrate and in which an information signal is recorded in the form of microscopic pits. A light beam is focused on the signal recording layer and some change of the light beam carried by a return light from the signal recording layer is detected to read the information signal recorded on the signal recording layer. The optical recording medium has a diameter of 65 mm or less and a thickness of 0.4 to 0.7 mm. An information signal recording area extends outwardly from a radial position of 12.5 mm or less from the center of the medium. The ratio in area between the information signal recording area and non-signal recording area is 3.4 or more. The storage capacity of this medium is 2 gigabytes or more. The optical recording medium has formed at the center thereof a center hole around which an annular table-abutment convexing to one side of the medium is formed. A magnetic-clamping hub is installed in the center hole and thus the medium is magnetically clamped to a rotation driving mechanism of an optical recording and/or reproducing apparatus. The compactness and high density of recording of the optical recording medium will contribute greatly to a further compact structure of a recording and/or reproducing apparatus in which the medium is to be used.

公开(公告)号：US06262948B1

公开(公告)日：2001-07-17

申请号：US09082830

申请日：1998-05-21

Applicant: Tetsu Watanabe ,  Yoshio Aoki

Inventor： Tetsu Watanabe ,  Yoshio Aoki

IPC: G11B1100

CPC classification number: G11B7/00718 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/24038 ,  G11B7/24059 ,  G11B7/243 ,  G11B11/10532 ,  G11B11/10534 ,  G11B11/10541 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/10558 ,  G11B11/10584 ,  G11B2007/13727

Abstract: An optical disc system uses an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a light beam on a recording layer of the optical disc in order to perform recording and/or reproducing of information. The thickness of the light-transmitting cover falls within the range of 0.05 mm to 0.6 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 1.10, and the wavelength of the light beam is selected to be between 100 nm to 780 nm.

Abstract translation: 光盘系统使用具有透光盖和物镜的光盘，用于将光束聚集或聚焦在光盘的记录层上，以便执行信息的记录和/或再现。 透光罩的厚度在0.05mm至0.6mm的范围内，物镜的数值孔径（NA）设定在0.55至1.10的范围内，并且选择光束的波长 在100nm至780nm之间。