公开(公告)号：US5293372A

公开(公告)日：1994-03-08

申请号：US728586

申请日：1991-07-11

申请人： Isao Hoshino ,  Takashi Yoshizawa ,  Takayuki Asano

发明人： Isao Hoshino ,  Takashi Yoshizawa ,  Takayuki Asano

IPC分类号： G11B7/125 ,  G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/126

摘要： In an information recording/reproducing apparatus, a light beam emitted from a semiconductor laser is guided to a beam splitter. The light beam passing through an incident surface of the splitter is splitted into first and second light beam by a beam splitting layer. The first beam passing through the splitting layer is emerged from a first emerging surface and guided to an optical disk. The first light beam after being reflected from the optical disk is returned to the first emerging surface and passes through the first emerging surface. The returned first light beam passed through a second emerging surface and defected by a detector so that a retrieving signal is generated from a detector. The second light beam reflected from the beam splitting layer is directed to a concave mirror of the splitter and is converged on a mirror detector through a third emerging surface so that a mirror signal for controlling the semiconductor laser is detected.

摘要翻译： 在信息记录/再现装置中，从半导体激光器发射的光束被引导到分束器。 通过分束器的入射表面的光束通过分束层被分裂成第一和第二光束。 穿过分离层的第一光束从第一出射表面出射并被引导到光盘。 从光盘反射后的第一光束返回到第一出射表面并通过第一出射表面。 返回的第一光束通过第二出射表面并被检测器瑕疵，使得从检测器产生检索信号。 从分束层反射的第二光束被引导到分束器的凹面镜，并且通过第三出射表面会聚在镜检测器上，从而检测用于控制半导体激光器的反射镜信号。

公开(公告)号：US5233587A

公开(公告)日：1993-08-03

申请号：US723320

申请日：1991-06-28

申请人： Takayuki Asano ,  Isao Hoshino

发明人： Takayuki Asano ,  Isao Hoshino

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/13

CPC分类号： G11B7/131 ,  G11B7/08576 ,  G11B7/0929 ,  G11B7/0943

摘要： An optical head which can be rotated about the rotation center by a magnetic force. There is a photodetector which is divided into a plurality of detection regions and as the optical head rotates, different detection regions are examined to determine a tracking error. Rotating between the inner and outer peripheral portions of an optical disk, the optical head selects a track on the optical disk on which information is recorded, radiates a light beam focused on the selected track, receives the light beam reflected by the optical disk to a second photodetector having three divided parallel sensor segments, and reproduces the information recorded on the optical disk. In consideration of the fact that in an optical disk rotated at a constant angular velocity, the degree of modulation of a retrieving information signal recorded on a recording layer on the optical disk is increased toward the outer peripheral portion, the sensor segments of the photodetector are arranged such that the projection of a track on the inner peripheral portion in an information recording area, of track projections which move on the sensor segments, does not cross the three divided sensor segments upon rotation of the optical head.

摘要翻译： 可以通过磁力围绕旋转中心旋转的光学头。 存在被分成多个检测区域的光检测器，并且当光头旋转时，检查不同的检测区域以确定跟踪误差。 在光盘的内圆周部分和外周部分之间旋转，光头选择记录有信息的光盘上的轨道，照射聚焦在所选轨道上的光束，将由光盘反射的光束接收到 第二光电检测器具有三个分开的并行传感器段，并且再现记录在光盘上的信息。 考虑到在以恒定角速度旋转的光盘中，记录在光盘上的记录层上的检索信息信号的调制度朝向外周部分增加，光电检测器的传感器段为 布置成使得在光学头的旋转时，在传感器段上移动的轨道突起的信息记录区域中的内周部分上的轨道的突出部不会与三个分开的传感器段交叉。

公开(公告)号：USD434355S

公开(公告)日：2000-11-28

申请号：US117175

申请日：2000-01-20

申请人： Mitsunori Morita ,  Isao Hoshino

设计人： Mitsunori Morita ,  Isao Hoshino

公开(公告)号：US5615200A

公开(公告)日：1997-03-25

申请号：US421965

申请日：1995-04-14

申请人： Isao Hoshino ,  Shoko Wachi ,  Yoshinori Honguh ,  Masahiko Tanaka

发明人： Isao Hoshino ,  Shoko Wachi ,  Yoshinori Honguh ,  Masahiko Tanaka

IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135

CPC分类号： G11B7/1398 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1359 ,  G11B2007/0006 ,  G11B2007/13727 ,  G11B7/0912

摘要： An optical head device adapted to be optically coupled to an optical disk includes a light-source laser and an objective lens optically coupled thereto. This lens receives an output light of the light source, and causes it to be projected onto the optical disk to form a focused spot thereon. Photodetectors which are arranged near the light-source laser are optically coupled to the lens in one optical path so that they are responsive to a light component which is reflected from the optical disk toward the photodetectors by way of the objective lens. A beam-shaping prism is located between the lens and a group of the light source and the photodetectors in the optical path. When the laser output light travels toward the lens, the prism reshapes the light into a predetermined isotropic beam profile. When the reflected light from the optical disk propagates reversely along the same optical path to enter the beam-shaping prism, this prism permits such an incident light to pass through itself toward the photodetectors.

摘要翻译： 适于光学耦合到光盘的光学头装置包括光源激光器和与其光耦合的物镜。 该透镜接收光源的输出光，并使其投射到光盘上以在其上形成聚焦点。 布置在光源激光器附近的光检测器在一个光路中光学耦合到透镜，使得它们响应于通过物镜从光盘向光电检测器反射的光分量。 光束成形棱镜位于透镜与光路中的一组光源和光电检测器之间。 当激光输出光朝向透镜行进时，棱镜将光变形成预定的各向同性的光束轮廓。 当来自光盘的反射光沿相同的光路反向传播以进入光束整形棱镜时，该棱镜允许这样的入射光自身穿过光电检测器。

公开(公告)号：US4530018A

公开(公告)日：1985-07-16

申请号：US421732

申请日：1982-09-23

申请人： Isao Hoshino ,  Teruo Murakami

发明人： Isao Hoshino ,  Teruo Murakami

IPC分类号： G05D13/62 ,  G11B7/007 ,  G11B19/24 ,  G11B19/28 ,  G11B21/08 ,  G11B27/10 ,  G11B19/26

CPC分类号： G11B27/10 ,  G11B19/24 ,  G11B21/083 ,  G11B7/00745

摘要： In a data recording/reproducing apparatus, a DC motor is provided for rotating an optical disk. A recording/reproducing head is driven to move over the disk linearly in the radial direction of the disk, thereby defining a plurality of data-storing tracks on the disk. A motor control section is provided for controlling the rotation of the disk so as to change the angular velocity of the disk when the head tracing is changed among the track groups. While the head is tracing the tracks included in the same track group, the rotation of the disk is made constant so that the disk rotates at a constant angular speed.

摘要翻译： 在数据记录/再现装置中，提供用于旋转光盘的直流电动机。 驱动记录/再现头沿盘的径向线性移动，从而在盘上限定多个数据存储轨道。 提供电动机控制部分，用于控制盘的旋转，以便在轨道组之间改变头跟踪时改变盘的角速度。 当磁头正在跟踪包含在相同轨道组中的轨道时，磁盘的旋转变得恒定，使得磁盘以恒定的角速度旋转。

公开(公告)号：US4512006A

公开(公告)日：1985-04-16

申请号：US421731

申请日：1982-09-23

申请人： Teruo Murakami ,  Isao Hoshino

发明人： Teruo Murakami ,  Isao Hoshino

IPC分类号： G11B20/12 ,  G11B7/00 ,  G11B7/004 ,  G11B7/007 ,  G11B7/013 ,  G11B20/18 ,  G11B27/10 ,  G11B27/30 ,  H04N5/76

CPC分类号： G11B7/00745 ,  G11B20/1809 ,  G11B27/105 ,  G11B27/3027 ,  G11B7/013

摘要： An optical-disk system is disclosed which comprises an optical-disk rotating in accordance with constant linear velocity technique, a signal input device for producing an information signal digitally encoded, and address generator for generating an address signal, an interleave circuit for commonly leaving both the information signal and the address signal, and a write controller for modulating a write beam incident to the optical-disk in response to the output signal from the interleave circuit and for forming at least one sector including both the commonly interleaved signals on the optical-disk.

摘要翻译： 公开了一种光盘系统，其包括根据恒定线速技术旋转的光盘，用于产生数字编码的信息信号的信号输入装置，以及用于产生地址信号的地址发生器，用于共同留下两者的交错电路 信息信号和地址信号，以及写入控制器，用于响应于来自交织电路的输出信号调制入射到光盘的写入光束，并且用于形成至少一个扇区，其包括光学元件上的共同交织的信号， 磁盘。

公开(公告)号：US6154433A

公开(公告)日：2000-11-28

申请号：US782292

申请日：1997-01-15

申请人： Isao Hoshino ,  Shoko Wachi ,  Yoshinori Honguh ,  Masahiko Tanaka

发明人： Isao Hoshino ,  Shoko Wachi ,  Yoshinori Honguh ,  Masahiko Tanaka

IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135

CPC分类号： G11B7/1398 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1359 ,  G11B2007/0006 ,  G11B2007/13727 ,  G11B7/0912

摘要： An optical head device adapted to be optically coupled to an optical disk includes a light-source laser and an objective lens optically coupled thereto. This lens receives an output light of the light source, and causes it to be projected onto the optical disk to form a focused spot thereon. Photodetectors are optically coupled to the lens in one optical path so that they are responsive to a light component which is reflected from the optical disk toward the photodetectors by way of the objective lens. A beam-shaping prism is located between the lens and a group of the light source and the photodetectors in the optical path. When the laser output light travels toward the lens, the prism reshapes the light into a predetermined isotropic beam profile. When the reflected light from the optical disk propagates reversely along the same optical path to enter the beam-shaping prism, this prism permits such an incident light to pass through itself toward the photodetectors.

摘要翻译： 适于光学耦合到光盘的光学头装置包括光源激光器和与其光耦合的物镜。 该透镜接收光源的输出光，并使其投射到光盘上以在其上形成聚焦点。 光检测器在一个光路中光学耦合到透镜，使得它们响应于通过物镜从光盘反射到光电检测器的光分量。 光束成形棱镜位于透镜与光路中的一组光源和光电检测器之间。 当激光输出光朝向透镜行进时，棱镜将光变形成预定的各向同性的光束轮廓。 当来自光盘的反射光沿相同的光路反向传播以进入光束整形棱镜时，该棱镜允许这样的入射光自身穿过光电检测器。

公开(公告)号：US5729510A

公开(公告)日：1998-03-17

申请号：US374992

申请日：1995-01-19

申请人： Akihiro Kasahara ,  Isao Hoshino ,  Hisashi Yamada

发明人： Akihiro Kasahara ,  Isao Hoshino ,  Hisashi Yamada

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B7/095

CPC分类号： G11B7/1372 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006 ,  G11B7/08582 ,  G11B7/093 ,  G11B7/0932

摘要： An optical head apparatus includes a stationary optical system having a light source and a detector for detecting light reflected by a recording medium, which stationary optical system is arranged at a position fixed to the recording medium. Plural objective lenses for focusing/irradiating light emitted from the light source onto the recording medium are arranged on a rotating blade which is provided to be rotatable in a direction parallel to the recording medium. By controlling the waveform of a current to be supplied to a tracking coil, the blade is rotated and a desired one of the objective lenses is located on an optical axis of the light irradiated onto the recording medium.

摘要翻译： 光头装置包括具有光源的固定光学系统和用于检测由记录介质反射的光的检测器，该固定光学系统被布置在固定到记录介质的位置。 用于将从光源发射的光聚焦/照射到记录介质上的多个物镜被布置在旋转刀片上，旋​​转刀片被设置为能够沿与记录介质平行的方向旋转。 通过控制要提供给跟踪线圈的电流的波形，叶片被旋转，并且期望的一个物镜位于照射到记录介质上的光的光轴上。

公开(公告)号：US5475210A

公开(公告)日：1995-12-12

申请号：US73320

申请日：1993-06-08

申请人： Toyoki Taguchi ,  Toshihiro Sugaya ,  Hisashi Yamada ,  Kei Shimura ,  Isao Hoshino ,  Masahiko Tanaka ,  Teruo Murakami ,  Hiroharu Satoh ,  Hiromichi Kobori ,  Sadanari Fujimoto

发明人： Toyoki Taguchi ,  Toshihiro Sugaya ,  Hisashi Yamada ,  Kei Shimura ,  Isao Hoshino ,  Masahiko Tanaka ,  Teruo Murakami ,  Hiroharu Satoh ,  Hiromichi Kobori ,  Sadanari Fujimoto

IPC分类号： G11B7/125 ,  H01S5/022 ,  H01S5/0683 ,  H04N5/85 ,  H04N5/911 ,  G01J1/32

CPC分类号： G11B7/126 ,  H04N5/911 ,  H01S5/02248 ,  H01S5/02296 ,  H01S5/0683 ,  H04N5/85

摘要： An optical disk apparatus includes a semiconductor laser for emitting a light beam, and an automatic power control or APC circuit for driving the laser. A compound prism structure is optically coupled to the laser in an optical head section, and defines a first optical path for causing a front laser light to be projected onto a rotating optical disk and guiding a reflected light therefrom toward a first photodetector, and a second optical path for guiding a part of the reflected light toward a second photodetector. An output signal of the first photodetector is used to generate a reproduced information signal. An output signal of the second photodetector is fed back to the APC circuit as a front light monitor signal. A part of a laser control signal internally generated in the APC circuit is supplied through a wiring line to a noise reduction circuit as a laser noise monitor signal. The noise reduction circuit subtracts this noise monitor signal from the reproduced information signal to provide a noise-suppressed information signal.

摘要翻译： 光盘装置包括用于发射光束的半导体激光器和用于驱动激光器的自动功率控制或APC电路。 复合棱镜结构在光学头部分光学耦合到激光器，并且限定第一光路，用于使前激光投射到旋转光盘上并将其反射的光从第一光电检测器引导，第二光路 用于将一部分反射光引导到第二光电检测器的光路。 第一光电检测器的输出信号用于产生再生信息信号。 第二光电检测器的输出信号作为前光监视信号反馈到APC电路。 在APC电路中内部生成的激光控制信号的一部分通过布线作为激光噪声监视信号提供给降噪电路。 噪声降低电路从再生信息信号中减去该噪声监视信号，提供噪声抑制信息信号。

公开(公告)号：US20050128895A1

公开(公告)日：2005-06-16

申请号：US11042062

申请日：2005-01-26

申请人： Isao Hoshino ,  Kunio Omi ,  Yasuhisa Takamura

发明人： Isao Hoshino ,  Kunio Omi ,  Yasuhisa Takamura

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/12 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1374

CPC分类号： G11B7/08582 ,  G11B7/123 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/22 ,  G11B2007/0006

摘要： Disclosed is an optical head comprising a light source for emitting a light beam having a predetermined wavelength, a light source driving part for driving the light source, a monitor light detector for detecting the light amount of the light beam emitted from the light source, an objective lens for collecting the light beam on a predetermined position of the optical disc, a light receiving element for receiving the light beam reflected from the optical disc so as to convert the received light beam into an electric signal, a base having an open portion and holding an optical member for guiding the light beam in the open portion in a manner to form an optical path of the light beam ranging from the light source to the objective lens, and holding means for holding the monitor light detector within the open portion in parallel to the optical path so as not to interfere with the light beam. The particular construction permits providing a miniaturized and thin optical head capable of overcoming the mounting layout of the members.

摘要翻译： 公开了一种光头，包括用于发射具有预定波长的光束的光源，用于驱动光源的光源驱动部分，用于检测从光源发射的光束的光量的监视光检测器， 用于在光盘的预定位置处收集光束的物镜;用于接收从光盘反射的光束以将所接收的光束转换成电信号的光接收元件，具有开口部分的基座，以及 保持光学构件，以形成从光源到物镜的光束的光路的方式将光束引导到开口部;以及保持装置，用于将监视光检测器保持在开口部内并列 以不影响光束的光路。 该特定结构允许提供能够克服构件的安装布局的小型化和薄型光学头。