公开(公告)号：US07619959B2

公开(公告)日：2009-11-17

申请号：US10498008

申请日：2002-12-18

申请人： Noriaki Nishi ,  Masaru Tezuka ,  Naoki Inoue ,  Kunika Hashimoto

发明人： Noriaki Nishi ,  Masaru Tezuka ,  Naoki Inoue ,  Kunika Hashimoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/00 ,  G11B7/1356 ,  G11B7/1369 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An optical disk drive (101) for optically recording and/or reproducing information signals is provided in which the power of a light beam emitted from an optical head (104) to an optical disk (102) is controlled by an optical-coupling efficiency varying elements (214, 215) correspondingly to the type of the optical disk, recording layer in a multilayer optical disk and a mode of operation selected while a variation of the optical-coupling efficiency is being detected by a light-detecting element (216), thereby positively varying the optical-coupling efficiency in a minimum necessary time. Thus, the power of the light beam focused on the optical disk can be varied in a wide range without having to extremely raise the ratio in output power between modes of operation at a light source (212). Therefore, even a light source whose rating of optical output power is small can be used to write and read information signals to and from any of optical disks of different types or to each of recording layers in a multilayer optical disk with a high accuracy. Namely, good characteristics in writing and reading information signals can be assured without having to largely vary the ratio in output power of the light source from the write to read mode, from one to another type of optical disks or from one to another recording layer of the multilayer optical disk.

摘要翻译： 提供用于光学记录和/或再现信息信号的光盘驱动器（101），其中从光学头（104）发射到光盘（102）的光束的功率由光耦合效率变化 对应于光盘类型的元件（214,215），多层光盘中的记录层以及由光检测元件（216）检测光耦合效率的变化而选择的操作模式， 从而在最小必要时间内积极地改变光耦合效率。 因此，聚焦在光盘上的光束的功率可以在宽范围内变化，而不必极大地提高在光源（212）处的操作模式之间的输出功率的比率。 因此，即使是光输出功率等级较小的光源也可以用于从多个光盘中的不同类型的光盘或每个记录层以高精度写入信息信号和从多层光盘中的每个记录层读取信息信号。 即，可以确保写入和读取信息信号的良好特性，而不必大幅度地改变光源的输出功率与写入/读取模式之间的比例，从一个到另一个类型的光盘，或从一个到另一个记录层 多层光盘。

公开(公告)号：US20050117494A1

公开(公告)日：2005-06-02

申请号：US10498008

申请日：2002-12-18

申请人： Noriaki Nishi ,  Masaru Tezuka ,  Naoki Inoue ,  Kunika Hashimoto

发明人： Noriaki Nishi ,  Masaru Tezuka ,  Naoki Inoue ,  Kunika Hashimoto

IPC分类号： G02F1/13 ,  G11B7/00 ,  G11B7/004 ,  G11B7/1263

CPC分类号： G11B7/1263 ,  G11B7/00 ,  G11B7/1356 ,  G11B7/1369 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An optical disk drive (101) for optically recording and/or reproducing information signals is provided in which the power of a light beam emitted from an optical head (104) to an optical disk (102) is controlled by an optical-coupling efficiency varying elements (214, 215) correspondingly to the type of the optical disk, recording layer in a multilayer optical disk and a mode of operation selected while a variation of the optical-coupling efficiency is being detected by a light-detecting element (216), thereby positively varying the optical-coupling efficiency in a minimum necessary time. Thus, the power of the light beam focused on the optical disk can be varied in a wide range without having to extremely raise the ratio in output power between modes of operation at a light source (212). Therefore, even a light source whose rating of optical output power is small can be used to write and read information signals to and from any of optical disks of different types or to each of recording layers in a multilayer optical disk with a high accuracy. Namely, good characteristics in writing and reading information signals can be assured without having to largely vary the ratio in output power of the light source from the write to read mode, from one to another type of optical disks or from one to another recording layer of the multilayer optical disk.

摘要翻译： 提供用于光学记录和/或再现信息信号的光盘驱动器（101），其中从光学头（104）发射到光盘（102）的光束的功率由光耦合效率变化 对应于光盘类型的元件（214,215），多层光盘中的记录层以及由光检测元件（216）检测光耦合效率的变化而选择的操作模式， 从而在最小必要时间内积极地改变光耦合效率。 因此，聚焦在光盘上的光束的功率可以在宽范围内变化，而不必极大地提高在光源（212）处的操作模式之间的输出功率的比率。 因此，即使是光输出功率等级较小的光源也可以用于从多个光盘中的不同类型的光盘或每个记录层以高精度写入信息信号和从多层光盘中的每个记录层读取信息信号。 即，可以确保写入和读取信息信号的良好特性，而不必大幅度地改变光源的输出功率与写入/读取模式之间的比例，从一种光盘到另一种类型的光盘，或从一种到另一种类型的光盘 多层光盘。

公开(公告)号：US07177259B2

公开(公告)日：2007-02-13

申请号：US10493671

申请日：2003-08-19

申请人： Noriaki Nishi ,  Masaru Tezuka ,  Kunika Hashimoto

发明人： Noriaki Nishi ,  Masaru Tezuka ,  Kunika Hashimoto

IPC分类号： G11B7/00

CPC分类号： G11B7/128 ,  G11B7/1263 ,  G11B7/1356 ,  G11B7/1369 ,  G11B2007/0006 ,  G11B2007/0013

摘要： The present invention is directed to an optical head adapted for performing recording or reproduction of information signals with respect to an optical disc (102), which controls light coupling efficiency with respect to light beams irradiated onto the optical disc (102) by light coupling efficiency adjustable element such as a liquid crystal element (214), etc. in accordance with type of the optical disc (102), recording surface of multi-layer optical disc and/or operation mode to change power of light beams irradiated onto the optical disc (102) to a large extent without excessively increasing change quantity of output power of a semiconductor laser element (212). A beam splitter (218) divides incident light beams of P-polarized light at a predetermined ratio to allow the light beams thus obtained to be incident on a light detector (219) for disc surface power monitor.

摘要翻译： 本发明涉及一种适用于相对于光盘（102）执行信息信号的记录或再现的光学头，其通过光耦合效率来控制相对于照射到光盘（102）上的光束的光耦合效率 根据光盘（102）的类型，诸如液晶元件（214）等的可调元件，多层光盘的记录面和/或操作模式，以改变照射到光盘上的光束的功率 （102），而不会过度增加半导体激光元件（212）的输出功率的变化量。 分束器（218）以预定比例将P偏振光的入射光束分隔开，以使所获得的光束入射到用于盘表面功率监视器的光检测器（219）上。

公开(公告)号：US06909489B1

公开(公告)日：2005-06-21

申请号：US10626458

申请日：2003-07-23

申请人： Tadashi Okano ,  Kunika Hashimoto

发明人： Tadashi Okano ,  Kunika Hashimoto

IPC分类号： H04N3/40 ,  G03B19/18 ,  G03B21/00 ,  G03B27/72 ,  G03B27/74

CPC分类号： H04N3/40 ,  G03B21/40

摘要： A luminous source apparatus, an image projecting apparatus, and an image projection converting apparatus to prevent a projected image, or an electronic image obtained through electronization of the projected image from intensity variations. A photosensor detects the light-emission quantity from a light-emission lamp in order to regulate the current supplied with the light-emission lamp according to a light-quantity detecting signal from the photosensor, so as to make the light-emission quantity from the light-emission lamp constant. Projected light-quantity onto a movie film is regulated and an image obtained from a shooting section becomes an image having a good quality with a little flicker.

摘要翻译： 一种光源装置，图像投影装置和图像投影转换装置，用于防止投影图像，或通过电子化投影图像获得的电子图像的强度变化。 光传感器检测来自发光灯的发光量，以便根据来自光电传感器的光量检测信号来调节与发光灯一起供给的电流，以使来自 发光灯恒定。 调节投影到电影胶片上的光量，并且从拍摄部分获得的图像成为具有良好质量的图像，具有少许闪烁。

公开(公告)号：US5757570A

公开(公告)日：1998-05-26

申请号：US761715

申请日：1996-12-06

申请人： Hiroshi Kiriyama ,  Haruyuki Kouno ,  Kunika Hashimoto

发明人： Hiroshi Kiriyama ,  Haruyuki Kouno ,  Kunika Hashimoto

IPC分类号： G11B15/00 ,  G11B15/43 ,  G11B15/46 ,  G11B15/467 ,  G11B15/665

CPC分类号： G11B15/43 ,  G11B15/6653 ,  G11B15/4673

摘要： A reel servo device employed in a recording and/or reproducing apparatus employing a tape cassette housing a tape as a recording medium includes an unusual running detection circuit for deciding if the tape housed within the tape cassette loaded on the tape recording and/or reproducing apparatus is wound in a slack winding state on a tape reel. If the tape running state is decided to be an unusual tape running state, tape tension data from the supply side tension arm is differentiated. If the differentiation data is positive indicating an increasing tape tension, the rewind side reel motor is controlled in a direction of slackening tape tension at the rewind tape reel side. Conversely, if the differentiation data is negative indicating an decreasing tape tension, the rewind side reel motor is torqued in a direction of tensioning the tape at the rewind tape reel side.

摘要翻译： 在采用将磁带作为记录介质的磁带的记录和/或再现装置中使用的卷轴伺服装置包括：异常行驶检测电路，用于判定装在磁带记录和/ 在松弛卷绕状态下卷绕在磁带卷轴上。 如果磁带运行状态被确定为异常磁带运行状态，则来自供给侧张力臂的磁带张力数据被区分。 如果微分数据为正，表示卷带张力增加，则倒带侧卷轴电动机被控制在再卷带卷轴侧的松弛带张力的方向上。 相反，如果微分数据为负表示带张力减小，则倒带侧卷轴电动机在再卷带盘侧张紧带的方向扭转。

公开(公告)号：US06980276B2

公开(公告)日：2005-12-27

申请号：US11081233

申请日：2005-03-16

申请人： Tadashi Okano ,  Kunika Hashimoto

发明人： Tadashi Okano ,  Kunika Hashimoto

IPC分类号： H04N3/40 ,  G03B19/18 ,  G03B21/00 ,  G03B27/72 ,  G03B27/74

CPC分类号： H04N3/40 ,  G03B21/40

摘要： A photosensor detecting light-emission quantity from a light-emission lamp is set up, in order to regulate the current supplied with the light-emission lamp from a power according to a light-quantity detecting signal from the photosensor, so as to make the light-emission quantity from the light-emission lamp constant. Projected light-quantity onto a movie film is regulated and an image obtained from a shooting section becomes an image having a good quality with a little flicker.

摘要翻译： 设置从发光灯检测发光量的光电传感器，以便根据来自光传感器的光量检测信号的功率来调节提供有发光灯的电流，以使 来自发光灯的发光量恒定。 调节投影到电影胶片上的光量，并且从拍摄部分获得的图像成为具有良好质量的图像，具有少许闪烁。

公开(公告)号：US20050157387A1

公开(公告)日：2005-07-21

申请号：US11081233

申请日：2005-03-16

申请人： Tadashi Okano ,  Kunika Hashimoto

发明人： Tadashi Okano ,  Kunika Hashimoto

IPC分类号： H04N3/40 ,  G03B21/56

CPC分类号： H04N3/40 ,  G03B21/40

摘要： A luminous source apparatus, an image projecting apparatus, and an image projection converting apparatus are provided, so as to prevent a projected image, or an electronic image obtained through electronization of the projected image from intensity variations. A photosensor detecting light-emission quantity from a light-emission lamp is set up, in order to regulate the current supplied with the light-emission lamp from a power according to a light-quantity detecting signal from the photosensor, so as to make the light-emission quantity from the light-emission lamp constant. Projected light-quantity onto a movie film is regulated and an image obtained from a shooting section becomes an image having a good quality with a little flicker.

摘要翻译： 提供了一种发光源装置，图像投影装置和图像投影转换装置，以防止投影图像或通过投影图像的电子化获得的电子图像的强度变化。 设置从发光灯检测发光量的光电传感器，以便根据来自光传感器的光量检测信号的功率来调节提供有发光灯的电流，以使 来自发光灯的发光量恒定。 调节投影到电影胶片上的光量，并且从拍摄部分获得的图像成为具有良好质量的图像，具有少许闪烁。