公开(公告)号：US5999685A

公开(公告)日：1999-12-07

申请号：US921606

申请日：1997-09-02

申请人： Youichiro Goto ,  Michiaki Sato ,  Yasuko Teragaki ,  Katsutoshi Hibino ,  Kenji Torazawa ,  Masahiro Higuchi ,  Takanari Kusafuka

发明人： Youichiro Goto ,  Michiaki Sato ,  Yasuko Teragaki ,  Katsutoshi Hibino ,  Kenji Torazawa ,  Masahiro Higuchi ,  Takanari Kusafuka

IPC分类号： F21V8/00

CPC分类号： G02B6/0038 ,  Y10S385/901

摘要： A light guide plate is provided including a first lens portion comprising a plurality of recessed or projected lenticular unit lenses formed of the same resin as that of the light guide plate on a light emission surface. The plurality of lenticular unit lenses in the first lens portion are triangular prism portions whose respective vertexes have an angle of 125.degree. to 165.degree. and are so arranged that their respective ridge lines are nearly parallel to each other. Such construction makes it possible to set the number of lenticular lens sheets used to one or to further eliminate the necessity of the lenticular lens sheets, so that the cost of parts and the fabrication cost of the light guide plate can be reduced. A second lens portion may be provided on a light reflective surface opposite to the light emission surface on which the first lens portion is disposed, the second lens portion including a plurality of recessed or projected lenticular unit lenses formed of the same resin as that of the light guide plate. Alternatively, a light guide plate is provided having a plurality of grooves with approximately equal groove widths formed on a surface opposite to a light emission surface, the grooves being arranged substantially parallel to each other and the spacing between the grooves narrowing as the distance from the light incident surface increases, with the spacing from the far end of one of the plurality of grooves proximate to the light incident surface to the near end of a groove adjacent thereto farther away from the light incident surface being 5 to 15 times the groove width.

摘要翻译： 提供了一种导光板，包括：第一透镜部分，包括由与发光表面上的导光板相同的树脂形成的多个凹入或突出的双凸透镜单元透镜。 第一透镜部分中的多个透镜单元透镜是三角形棱镜部分，其各自的顶点具有125°至165°的角度，并且被布置成使得它们各自的脊线彼此几乎平行。 这样的结构使得可以将使用的双凸透镜片的数量设置为一个，或者进一步消除双凸透镜片的必要性，从而可以减少导光板的部件成本和制造成本。 第二透镜部分可以设置在与其上设置有第一透镜部分的光发射表面相对的光反射表面上，第二透镜部分包括由与第一透镜部分相同的树脂形成的多个凹入或突出的双凸透镜单元透镜 导光板。 或者，导光板设置有多个槽，其在与发光表面相对的表面上形成有大致相等的槽宽，所述槽基本上彼此平行地布置，并且槽之间的间距随着距离 光入射面增加，与多个凹槽中的一个接近光入射表面的远端的距离相对于与光入射表面相邻的凹槽的近端的距离为凹槽宽度的5至15倍。

公开(公告)号：US5997276A

公开(公告)日：1999-12-07

申请号：US600878

申请日：1996-02-13

申请人： Kenji Torazawa ,  Takanari Kusafuka ,  Masahiro Higuchi

发明人： Kenji Torazawa ,  Takanari Kusafuka ,  Masahiro Higuchi

IPC分类号： B29C45/26 ,  B29C45/38

CPC分类号： B29C45/263 ,  B29C45/38 ,  Y10S425/81

摘要： A disc is provided which includes a disc body of disc shape having a center hole. An information recording area is formed on one side surface of the disc body. The information recording area has information thereon read by reflection of laser light. The information recording area has an inner circumferential edge positioned adjacent to the center hole. The disc body has a radius ranging from 39 mm to 80 mm, the center hole has a radius ranging from 7.5 mm to 7.55 mm, and the inner circumferential edge of the information recording area being positioned to extend from a radius of 15 mm to 22 mm from the center of the disc body. A disc may be manufactured by variations of the following disc manufacturing method including the steps of: supporting a stamper on a first mold by a supporting means; defining a forming space by clamping the first mold to a second mold; defining a center hole of the disc by advancing a center hole defining member into a center part of the forming space; connecting a injection means into the forming space by opening a gate member of a resin injection member and filling the forming space with a resin through a communicating hole from the injection means; and cooling the resin in the forming space after shutting off connection between the injection means and the forming space by closing the gate member of the resin injection member.

摘要翻译： 提供了一种盘，其包括具有中心孔的盘形盘体。 信息记录区域形成在盘体的一个侧表面上。 信息记录区域具有通过激光反射读取的信息。 信息记录区域具有邻近中心孔定位的内圆周边缘。 盘体的半径范围为39mm至80mm，中心孔的半径范围为7.5mm至7.55mm，信息记录区的内圆周边缘从15mm的半径延伸至22 mm从盘体的中心。 盘可以通过以下盘制造方法的变型制造，包括以下步骤：通过支撑装置在第一模具上支撑压模; 通过将第一模具夹紧到第二模具来限定成形空间; 通过将中心孔限定构件推进到成形空间的中心部分来限定盘的中心孔; 通过打开树脂注射构件的门构件并将注入装置通过来自注射装置的连通孔用树脂填充成形空间来将注射装置连接到成形空间中; 并且通过关闭树脂注入构件的浇口构件来关闭喷射装置和成形空间之间的连接，从而在形成空间中冷却树脂。

公开(公告)号：US06324138B1

公开(公告)日：2001-11-27

申请号：US09599532

申请日：2000-06-23

申请人： Yoshihiro Hori ,  Hisashi Matsuyama ,  Akiomi Kunisa ,  Nobuo Itoh ,  Seiichiro Takahashi ,  Toshiaki Hioki ,  Kenji Asano ,  Noboru Mamiya ,  Yoshiharu Uchihara ,  Kenji Nakao ,  Satoshi Sumi ,  Kenji Torazawa

发明人： Yoshihiro Hori ,  Hisashi Matsuyama ,  Akiomi Kunisa ,  Nobuo Itoh ,  Seiichiro Takahashi ,  Toshiaki Hioki ,  Kenji Asano ,  Noboru Mamiya ,  Yoshiharu Uchihara ,  Kenji Nakao ,  Satoshi Sumi ,  Kenji Torazawa

IPC分类号： G11B1552

CPC分类号： G11B7/0045 ,  G11B7/004 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/24082 ,  G11B11/10502 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10595 ,  G11B20/1426 ,  G11B27/24 ,  G11B2020/1457 ,  G11B2220/216 ,  G11B2220/2562

摘要： A meandering groove is formed in a digital disk (10) with a wobble signal that is wobbled to reproduce a clock signal. The wobble signal is read out by an optical head (26). An address detection circuit (40) detects an address signal that is multiplexed with the wobble signal. A PLL oscillation circuit (24) provides a clock signal in synchronization with the wobble signal. Data is modulated by a modulation circuit (16) according to the clock signal and a timing signal based on the address signal, and recorded on the digital disk (10). In reproduction, a RF signal in the wobble signal is converted into a digital signal by an A/D converter (42). The signal is demodulated by a demodulation circuit (44) for data output.

摘要翻译： 在摆动摆动信号的数字盘（10）中形成曲折的凹槽以再现时钟信号。 摆动信号由光学头（26）读出。 地址检测电路（40）检测与摆动信号多路复用的地址信号。 PLL振荡电路（24）提供与摆动信号同步的时钟信号。 数据由调制电路（16）根据时钟信号和基于地址信号的定时信号进行调制并记录在数字盘（10）上。 在再现中，摆动信号中的RF信号由A / D转换器（42）转换成数字信号。 该信号由用于数据输出的解调电路（44）解调。

公开(公告)号：US20060132725A1

公开(公告)日：2006-06-22

申请号：US10540545

申请日：2003-12-25

申请人： Fusao Terada ,  Kenji Torazawa ,  Yasuo Funazou ,  Yoichi Tsuchiya ,  Katsutoshi Hibino ,  Hideyuki Kanayama ,  Shouichi Yoshii ,  Yoshitaka Kurosaka

发明人： Fusao Terada ,  Kenji Torazawa ,  Yasuo Funazou ,  Yoichi Tsuchiya ,  Katsutoshi Hibino ,  Hideyuki Kanayama ,  Shouichi Yoshii ,  Yoshitaka Kurosaka

IPC分类号： G03B21/14

CPC分类号： G02B27/102 ,  G02B27/1046 ,  G02B27/126 ,  G02B27/149 ,  H04N9/315

摘要： An illuminating device (1) is formed of a light source (12) in which LED chips (11) are arranged in an array shape and lens cells (14) are arranged on a light-emission side of each of the LED chips (11), and a pair of fly's eye lenses (13) that integrates and guides to a liquid crystal panel (3) the light emitted from each of the LED chips (11) and collimated by the lens cells (14). The LED chip (11) and the lens cell (14) are formed in a square shape, and an aspect ratio thereof corresponds to that of the liquid crystal display panel (3). In addition, the lens cells (14) are arranged separately from one another in such a manner to have wall surfaces (air gaps), and the wall surfaces serve as reflective surfaces.

摘要翻译： 照明装置（1）由其中LED芯片（11）布置成阵列形状的光源（12）形成，并且透镜单元（14）布置在每个LED芯片（11）的发光侧 ）和一对蝇眼透镜（13），其将从每个LED芯片（11）发射并由透镜单元（14）准直的光积分并引导到液晶面板（3）。 LED芯片（11）和透镜单元（14）形成为正方形，其长宽比对应于液晶显示面板（3）的长宽比。 此外，透镜单元（14）以具有壁面（气隙）的方式彼此分开地布置，并且壁表面用作反射表面。

公开(公告)号：US06339571B1

公开(公告)日：2002-01-15

申请号：US09026521

申请日：1998-02-20

申请人： Kenji Torazawa ,  Toshiaki Hioki

发明人： Kenji Torazawa ,  Toshiaki Hioki

IPC分类号： G11B700

CPC分类号： G11B27/329 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/00736 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/126 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10597 ,  G11B19/128 ,  G11B20/10009 ,  G11B20/1403 ,  G11B27/24 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2529 ,  G11B2220/2545

摘要： A table having a plurality of recording densities and a plurality of recording/reproducing conditions corresponding to the recording densities and each necessary for recording/reproducing a signal at a corresponding recording density is recorded in a TOC region of a magneto-optical disk. A recording/reproducing apparatus finds out a recording density at which it can record/reproduce data from the table and records or reproduces a signal at the recording density. The recording/reproducing conditions include the wavelength of a semiconductor laser, whether or not to employ the optical pulse magnetic field modulation recording method, the presence/absence of an optical super resolution pickup, whether or not to employ the optical pulse reproducing method, whether or not to employ the PRML method and the like. Therefore, if the recording/reproducing technology further advances, a signal may be recorded/reproduced to/from the magneto-optical disk at an optimum recording density without having to change the data format of the magneto-optical disk.

摘要翻译： 具有多个记录密度和与记录密度对应的多个记录/再现条件的表格，并且每个记录/再现相应记录密度的信号所需的表被记录在磁光盘的TOC区域中。 记录/再现装置发现记录密度，其可以从表中记录/再现数据，并以记录密度记录或再现信号。 记录/再现条件包括半导体激光器的波长，是否采用光脉冲磁场调制记录方法，是否存在光学超分辨率拾取，是否采用光脉冲再现方法，是否 或不使用PRML方法等。 因此，如果记录/再现技术进一步前进，则可以以最佳记录密度将信号记录/再现到磁光盘，而不必改变磁光盘的数据格式。

公开(公告)号：US5914929A

公开(公告)日：1999-06-22

申请号：US999802

申请日：1997-08-11

申请人： Seizo Kato ,  Kenji Torazawa ,  Kenji Nakao ,  Shigeki Hori

发明人： Seizo Kato ,  Kenji Torazawa ,  Kenji Nakao ,  Shigeki Hori

IPC分类号： G11B17/04 ,  G11B33/02 ,  G11B3/90

CPC分类号： G11B17/0565 ,  G11B17/057

摘要： The present invention is provided with a cartridge holder for installation of a cartridge which houses an optical disk, and a tray which is located below said cartridge holder and in which an unhoused optical disk is placed, and which can move to-and-fro between a position in which information are recorded and/or played back and a position in which the optical disk is exchanged, a center shaft which rotates by means of a rotating drive means, and a holding mechanism including a turntable which is secured to the shaft and is provided with a magnetic body, an optical disk centering means and a support surface which supports the optical disk; and a clamper which can be brought into contact with and separated from the support surface of said turntable and which maintains in contact with the support surface of the turntable optical disks which do not have hubs. The optical information recording/playback device allows installation of a variety of optical information recording media such as optical disk with or without hubs and optical disks which are housed in a cartridge or unhoused.

摘要翻译： 本发明提供了一种用于安装容纳光盘的盒的盒保持器和位于所述盒保持器下方的托盘，并且其中放置未安置的光盘，并且其可以在第一和第二 信息被记录和/或播放的位置和光盘被更换的位置，通过旋转驱动装置旋转的中心轴，以及包括固定到轴的转台的保持机构， 设置有磁性体，光盘定心装置和支撑光盘的支撑表面; 以及可以与所述转台的支撑表面接触并分离并且与不具有轮毂的转盘光盘的支撑表面保持接触的夹持器。 光学信息记录/重放装置允许安装各种光学信息记录介质，例如具有或不具有容纳在盒中或未安装的集线器和光盘的光盘。

公开(公告)号：US06438097B1

公开(公告)日：2002-08-20

申请号：US09487867

申请日：2000-01-20

申请人： Seiji Kajiyama ,  Youichi Tsuchiya ,  Kenji Torazawa ,  Kouichi Tada

发明人： Seiji Kajiyama ,  Youichi Tsuchiya ,  Kenji Torazawa ,  Kouichi Tada

IPC分类号： G11B724

CPC分类号： G11B23/281 ,  G11B7/24 ,  G11B7/24085 ,  G11B7/261 ,  G11B20/00086 ,  G11B23/284

摘要： Micro-pits or micro-pit strings, which are disabled precise copying by means of illegal copying described above and enable signals different from signals of a normal disc to be detected in case of failure in precise copying, are recorded in a copy protected area of an optical disc beforehand. A read unit checks the copy protected area and determines a loaded disc is legal disc or illegally copied disc. If illegal, reading is prohibitted.

摘要翻译： 通过上述非法复制而禁止精确复制的微凹坑或微凹坑串被记录在复制保护区域的复制保护区域中，并且使得在精确复制失败的情况下能够检测到与普通盘的信号不同的信号被检测到 光盘。 读取单元检查复制保护区域，并确定加载的光盘是合法光盘或非法复制光盘。 如果非法，阅读被禁止。

公开(公告)号：US06262967B1

公开(公告)日：2001-07-17

申请号：US09487866

申请日：2000-01-20

申请人： Seiji Kajiyama ,  Youichi Tsuchiya ,  Kenji Torazawa ,  Kouichi Tada

发明人： Seiji Kajiyama ,  Youichi Tsuchiya ,  Kenji Torazawa ,  Kouichi Tada

IPC分类号： G11B724

CPC分类号： G11B23/281 ,  G11B7/24 ,  G11B7/24085 ,  G11B7/261 ,  G11B20/00086 ,  G11B23/284

摘要： An illegal disc copying protection system which includes an optical disc with recorded information as a series of pits aligned to a track direction from the optical disc, a recording system which records information as a series of pits aligned to the track direction from the optical disc, and a reading system which reads information being recorded as a series of pits aligned to the track direction from the optical disc.

摘要翻译： 一种非法盘片复制保护系统，其包括具有记录信息的光盘作为与光盘的轨道方向对齐的一系列凹坑;记录系统，其将信息作为与光盘方向对准的一系列凹坑记录， 以及读取系统，其读取被记录为与光盘对准的轨道方向的一系列凹坑的信息。

公开(公告)号：US06243326B1

公开(公告)日：2001-06-05

申请号：US09101800

申请日：1998-10-19

申请人： Satoshi Sumi ,  Yoshihisa Suzuki ,  Atsushi Yamaguchi ,  Kenji Tanase ,  Yoshiharu Uchihara ,  Kenji Torazawa ,  Seiji Murata

发明人： Satoshi Sumi ,  Yoshihisa Suzuki ,  Atsushi Yamaguchi ,  Kenji Tanase ,  Yoshiharu Uchihara ,  Kenji Torazawa ,  Seiji Murata

IPC分类号： G11B1100

CPC分类号： G11B11/1051 ,  G11B11/10508 ,  G11B11/10515 ,  G11B11/10543 ,  G11B11/10586

摘要： A magneto-optic disk and a recording/reproduction device therefor adopt optical super-resolution to increase recording capacity. More specifically, the magneto-optic disk has an heat emitting layer (6) on a recording layer (4) and still preferably has an intermediate layer (8) between a reproduction layer (3) and the recording layer (4). The recording/reproduction device includes a circuit (33) for pulsing a laser beam to be radiated to the magneto-optic disk and still preferably includes a polarization rotating unit (50) and a polarizing filter (51) for blocking only the center of the laser beam in reproduction. The heat emitting layer (6) diffusing any heat generated by the laser beam, and the discontinuously radiated laser beam allow small recording domain. The laser beam having its center blocked forms smaller main lobe due to diffraction effect.

摘要翻译： 磁光盘及其记录/再现装置采用光学超分辨率来增加记录容量。 更具体地，磁光盘在记录层（4）上具有发热层（6），并且还优选地在再现层（3）和记录层（4）之间具有中间层（8）。 记录/再现装置包括用于脉冲激光束以辐射到磁光盘的电路（33），并且还优选地包括偏振旋转单元（50）和偏振滤光器（51），用于仅阻挡 激光束在再现。 发热层（6）扩散由激光束产生的热量，不连续辐射的激光束允许小的记录域。 具有中心阻挡的激光束由于衍射效应而形成较小的主瓣。

公开(公告)号：US4993011A

公开(公告)日：1991-02-12

申请号：US425503

申请日：1989-10-20

申请人： Kenji Torazawa ,  Satoshi Sumi ,  Seiji Murata ,  Shigekazu Minechika

发明人： Kenji Torazawa ,  Satoshi Sumi ,  Seiji Murata ,  Shigekazu Minechika

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/08 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B11/105

CPC分类号： G11B11/10597 ,  G11B11/10519 ,  G11B11/10532 ,  G11B11/10576 ,  G11B7/0045 ,  G11B7/08 ,  G11B7/125 ,  G11B7/131 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0909

摘要： An erasing beam B1 and a recording beam B2 emitted from a laser diode array 20 are focused on different tracks of a optical magnetic disk D, the erasing beam B1 being focused on a track located ahead of a track on which the recording beam B2 is focused. The reflected beams of the erasing beam B1 and the recording beam B2 are separated respectively into two polarized components by means of a polarized beam splitter 17 and the polarized components are received by photo sensor means 23 and 24. Based on outputs of the photo sensor means 23 and 24, an address signal, a focus error signal and a tracking error signal are obtained. At the time of reproduction, the laser diode array 20 emits a reproducing beam so that the photo sensor means provide a reproducing signal.

摘要翻译： 从激光二极管阵列20发射的擦除光束B1和记录光束B2聚焦在光盘D的不同轨道上，擦除光束B1被聚焦在位于记录光束B2聚焦的光道前方的光道上 。 擦除光束B1和记录光束B2的反射光束通过偏振光束分离器17分别分离成两个偏振分量，并且偏振分量被光传感器装置23和24接收。基于光传感器装置 23和24，获得地址信号，聚焦误差信号和跟踪误差信号。 在再现时，激光二极管阵列20发射再现光束，使得光传感器装置提供再现信号。