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1.发明公开Laser output control device for an optical information recording and reproducing apparatus 失效Vorrichtung zur Kontrolle derLaserausgangsgrösseneines optischen Informationsaufzeichnungs- undWiedergabegerätes。
公开(公告)号：EP0623922A1
公开(公告)日：1994-11-09
申请号：EP94106095.6
申请日：1994-04-20
发明人： Noda, Kazuo , Nakamura, Eiichi , Yamazaki, Koichi
CPC分类号： G11B7/131 , G11B7/123 , G11B7/126 , G11B7/1263 , G11B7/1362
摘要： In a laser output control device for use in an optical information recording and reproducing apparatus which uses output light from a semiconductor laser device (1) to record and reproduce information onto and from an optical information recording medium (9), a light receiving element (19) is provided on the peripheral portion of a laser light emitting window (22) formed in a housing (21) of the semiconductor laser device (1). The peripheral component (5) of forward radiated light of the laser light output from the semiconductor laser device (1) is received by the light receiving element (19), so as to control the output power of the semiconductor laser device (1) in accordance with output of the light receiving element corresponding to the received light.
摘要翻译： 在使用来自半导体激光装置（1）的输出光在光信息记录介质（9）上记录信息和从光信息记录媒体（9）再现信息的光信息记录再现装置的激光输出控制装置中， 19）设置在形成在半导体激光装置（1）的壳体（21）中的激光发射窗（22）的周边部分上。 从半导体激光装置（1）输出的激光的前向辐射光的外围部件（5）被受光元件（19）接收，以便控制半导体激光装置（1）的输出功率 根据与所接收的光对应的光接收元件的输出。
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2.发明公开Optical information recording/reproducing system 失效系统zur optischen Aufzeichnung und Wiedergabe von信息。
公开(公告)号：EP0643387A1
公开(公告)日：1995-03-15
申请号：EP94114073.3
申请日：1994-09-08
CPC分类号： G11B7/24079 , G11B7/0033 , G11B7/0903
摘要： A high-density recording medium has data tracks and guide tracks formed on both sides of each of the data tracks. Intervals between the guide tracks are set in such a manner that the outer edges of two adjacent guide tracks correspond in position to two tracking laser beam spots on the recording medium. To allow use of either of the high-density recording medium, and a conventional recording medium on which intervals between guide tracks are set in such a manner that the inner edges of two adjacent guide tracks correspond in position to two tracking laser beam spots, control is performed such that polarity of a tracking control servo is selectively inverted depending upon which of the high-density and conventional recording medium is used.
摘要翻译： 高密度记录介质具有形成在每个数据轨迹两侧的数据轨迹和导轨。 引导轨道之间的间隔设置成使得两个相邻引导轨道的外边缘在位置上对应于记录介质上的两个跟踪激光束斑点。 为了允许使用高密度记录介质和传统记录介质之一，其中导轨之间的间隔被设置成使得两个相邻引导轨道的内边缘在位置对应于两个跟踪激光束点，控制 执行使得跟踪控制伺服的极性根据使用高密度和常规记录介质的哪一个而被选择性地反转。
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公开(公告)号：EP0451773A2
公开(公告)日：1991-10-16
申请号：EP91105570.5
申请日：1991-04-09
发明人： Yamazaki, Koichi , Noda, Kazuo , Nakamura, Eiichi
IPC分类号： H02K41/035 , G11B19/20 , G11B17/022 , G06K13/06 , G11B7/085
CPC分类号： G11B17/0408 , G11B7/0033 , G11B7/08588 , G11B17/022 , G11B19/20 , G11B25/04 , H02K41/0356
摘要： A linear motor having a magnetic circuit and a moving coil, the magnetic circuit comprising a linear yoke provided at the center of the circuit and a pair of linear magnets, the linear yoke and the pair of linear magnets forming a pair of linear gaps with the linear yoke interposed therebetween, the magnetic circuit applying a magnetic field to the linear gaps, the movable coil mounted on the linear yoke of the magnetic circuit being moved along the linear yoke by an electromagnetic action to the magnetic circuit when the movable coil is powered, wherein the linear magnet has a larger magnetic force at opposite end portions in the longitudinal direction of the linear magnet than at an intermediate area, the magnetic reluctance of the magnetic circuit is made large to obtain a driving current of the movable coil corresponding to the magnetic reluctance when the moving coil moves at the intermediate area of the linear magnet, or the magnetic circuit is mounted on a plate made of material having the same magnetic reluctance as the linear yoke. An information recording/reproducing apparatus having a card transport stage for transporting an information recording medium and a laser unit for radiating a laser beam to the information recording medium, the information recording/reproducing apparatus writing and reading information to and from the information recording medium while reciprocally moving the card transport stage and linearly and reciprocally moving the information recording medium and applying a laser beam to the information recording medium, wherein the apparatus comprising a transport unit wherein the plane of driving force by driving means for reciprocally moving the card transport stage is made substantially flush with the center of a guide shaft for sliding the transport stage.
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4.发明公开Optical head for optical information recording medium 失效Optischer Kopffüroptisches Informationsaufzeichnungsmedium。
公开(公告)号：EP0426053A2
公开(公告)日：1991-05-08
申请号：EP90120645.8
申请日：1990-10-27
发明人： Noda, Kazuo , Nakamura, Eiichi
CPC分类号： G11B7/0916 , G11B7/13 , G11B7/1362 , G11B7/1381
摘要： An optical head for recording and reproducing optical information, the optical head comprising an illumination system which irradiates three beams of light comprising 0-order diffraction light, +1-order diffraction light, and -1-order diffraction light onto an optical information recording medium (11), and a photoreceiver system (20, 21) which receives three beams of reflected light from the recording medium; the photoreceiver system being provided with an edge mirror (19) whereby, of the three beams of reflected light from the recording medium, approximately one half of the 0-order diffraction light and all of the +1-order diffraction light is received by a first photoreceiver diode (20), without being affected by the edge mirror, and the remaining approximately one half of the 0-order diffraction light and all of the -1-order diffraction light is reflected by the edge mirror and is received by a second photoreceiver diode (21); wherein a focusing control signal, a tracking control signal, and an information signal are obtained from an output from the first photoreceiver diode or the second photoreceiver diode, or from combined outputs from the first photoreceiver diode and the second photoreceiver diode.
摘要翻译： 一种用于记录和再现光学信息的光学头，所述光学头包括将包含0级衍射光，1级衍射光和-1级衍射光的三束光照射到光学信息记录介质上的照明系统 （11）和从所述记录介质接收三束反射光的光接收器系统（20,21）; 光接收器系统设置有边缘反射镜（19），由此来自记录介质的三束反射光束，大约是0级衍射光的一半和所有+1级衍射光被 第一光接收器二极管（20），不受边缘反射镜的影响，剩余的大约一半的0级衍射光和所有的-1级衍射光被边缘反射镜反射并被第二光接收器二极管 光接收二极管（21）; 其中从第一光接收二极管或第二光接收二极管的输出或来自第一光接收二极管和第二光接收二极管的组合输出获得聚焦控制信号，跟踪控制信号和信息信号。
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5.发明授权Laser output control device for an optical information recording and reproducing apparatus 失效设备，用于控制一个光学信息的激光输出值记录和再现设备
公开(公告)号：EP0623922B1
公开(公告)日：2000-07-05
申请号：EP94106095.6
申请日：1994-04-20
发明人： Noda, Kazuo , Nakamura, Eiichi , Yamazaki, Koichi
CPC分类号： G11B7/131 , G11B7/123 , G11B7/126 , G11B7/1263 , G11B7/1362
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公开(公告)号：EP0426053B1
公开(公告)日：1995-10-11
申请号：EP90120645.8
申请日：1990-10-27
发明人： Noda, Kazuo , Nakamura, Eiichi
CPC分类号： G11B7/0916 , G11B7/13 , G11B7/1362 , G11B7/1381
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公开(公告)号：EP0451773A3
公开(公告)日：1992-05-20
申请号：EP91105570.5
申请日：1991-04-09
发明人： Yamazaki, Koichi , Noda, Kazuo , Nakamura, Eiichi
IPC分类号： H02K41/035 , G11B19/20 , G11B17/022 , G06K13/06 , G11B7/085
CPC分类号： G11B17/0408 , G11B7/0033 , G11B7/08588 , G11B17/022 , G11B19/20 , G11B25/04 , H02K41/0356
摘要： A linear motor having a magnetic circuit and a moving coil, the magnetic circuit comprising a linear yoke provided at the center of the circuit and a pair of linear magnets, the linear yoke and the pair of linear magnets forming a pair of linear gaps with the linear yoke interposed therebetween, the magnetic circuit applying a magnetic field to the linear gaps, the movable coil mounted on the linear yoke of the magnetic circuit being moved along the linear yoke by an electromagnetic action to the magnetic circuit when the movable coil is powered, wherein the linear magnet has a larger magnetic force at opposite end portions in the longitudinal direction of the linear magnet than at an intermediate area, the magnetic reluctance of the magnetic circuit is made large to obtain a driving current of the movable coil corresponding to the magnetic reluctance when the moving coil moves at the intermediate area of the linear magnet, or the magnetic circuit is mounted on a plate made of material having the same magnetic reluctance as the linear yoke. An information recording/reproducing apparatus having a card transport stage for transporting an information recording medium and a laser unit for radiating a laser beam to the information recording medium, the information recording/reproducing apparatus writing and reading information to and from the information recording medium while reciprocally moving the card transport stage and linearly and reciprocally moving the information recording medium and applying a laser beam to the information recording medium, wherein the apparatus comprising a transport unit wherein the plane of driving force by driving means for reciprocally moving the card transport stage is made substantially flush with the center of a guide shaft for sliding the transport stage.
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公开(公告)号：EP0451773B1
公开(公告)日：1996-02-07
申请号：EP91105570.5
申请日：1991-04-09
发明人： Yamazaki, Koichi , Noda, Kazuo , Nakamura, Eiichi
IPC分类号： H02K41/035 , G11B19/20 , G11B17/022 , G06K13/06 , G11B7/085
CPC分类号： G11B17/0408 , G11B7/0033 , G11B7/08588 , G11B17/022 , G11B19/20 , G11B25/04 , H02K41/0356
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公开(公告)号：EP0608008A3
公开(公告)日：1994-10-05
申请号：EP94105357.1
申请日：1991-04-09
发明人： Yamazaki, Koicho , Noda, Kazuo , Nakamura, Eiichi
IPC分类号： G11B19/20 , G11B17/022 , G06K13/06 , G11B7/085
CPC分类号： G11B17/0408 , G11B7/0033 , G11B7/08588 , G11B17/022 , G11B19/20 , G11B25/04 , H02K41/0356
摘要： An information recording/reproducing apparatus having a card transport stage for transporting an information recording medium and a laser unit for radiating a laser beam to the information recording medium, the information recording/reproducing apparatus writing and reading information to and from the information recording medium while reciprocally moving the card transport stage and linearly and reciprocally moving the information recording medium and applying a laser beam to the information recording medium, wherein the apparatus comprising a transport unit wherein the plane of driving force by driving means for reciprocally moving the card transport stage is made substantially flush with the center of a guide shaft for sliding the transport stage.
摘要翻译： 一种具有磁路和动圈的线性电动机，所述磁路包括设置在所述电路的中心的线性磁轭和一对线性磁体，所述线性磁轭和所述一对线性磁体形成一对线性间隙， 线性磁轭插入其间，磁路向线性间隙施加磁场，当可动线圈通电时，安装在磁路的线性磁轭上的可动线圈通过电磁作用沿线性磁轭移动到磁路， 其中线性磁体在线性磁体的纵向方向的相对端部处的磁力比在中间区域具有更大的磁力，使得磁路的磁阻变大，以获得对应于磁性的可动线圈的驱动电流 当动线圈在线性磁体的中间区域移动时，或者磁路安装在由材料制成的板上的磁阻 具有与线性磁轭相同的磁阻。 一种信息记录/再现装置，具有用于传送信息记录介质的卡传送台和用于向信息记录介质辐射激光束的激光单元，信息记录/再现装置向信息记录介质写入和读取信息，同时 相互移动卡传送台并且线性地并且往复地移动信息记录介质并且向信息记录介质施加激光束，其中该装置包括传送单元，其中驱动装置的平面通过用于使卡传送台往复移动的驱动力是 与导向轴的中心大致齐平，用于滑动输送台。
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公开(公告)号：EP0608008A2
公开(公告)日：1994-07-27
申请号：EP94105357.1
申请日：1991-04-09
发明人： Yamazaki, Koicho , Noda, Kazuo , Nakamura, Eiichi
IPC分类号： G11B19/20 , G11B17/022 , G06K13/06 , G11B7/085
CPC分类号： G11B17/0408 , G11B7/0033 , G11B7/08588 , G11B17/022 , G11B19/20 , G11B25/04 , H02K41/0356
摘要： An information recording/reproducing apparatus having a card transport stage for transporting an information recording medium and a laser unit for radiating a laser beam to the information recording medium, the information recording/reproducing apparatus writing and reading information to and from the information recording medium while reciprocally moving the card transport stage and linearly and reciprocally moving the information recording medium and applying a laser beam to the information recording medium, wherein the apparatus comprising a transport unit wherein the plane of driving force by driving means for reciprocally moving the card transport stage is made substantially flush with the center of a guide shaft for sliding the transport stage.
摘要翻译： 一种信息记录/再现装置，具有用于传送信息记录介质的卡传送台和用于向信息记录介质辐射激光束的激光单元，信息记录/再现装置向信息记录介质写入和读取信息，同时 相互移动卡传送台并且线性地并且往复地移动信息记录介质并且向信息记录介质施加激光束，其中该装置包括传送单元，其中驱动装置的平面通过用于使卡传送台往复移动的驱动力是 与导向轴的中心大致齐平，用于滑动输送台。
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