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275 条记录 (耗时 0.031 秒)

    Method and apparatus for optical detection of information
    1.
    发明授权
    Method and apparatus for optical detection of information 失效
    信息光学检测方法和装置

    公开(公告)号：US4743774A

    公开(公告)日：1988-05-10

    申请号：US828719

    申请日：1986-02-12

    申请人： Takeshi Maeda ,  Shigeru Nakamura ,  Hisataka Sugiyama ,  Kazuo Shigematsu ,  Atsushi Saito

    发明人： Takeshi Maeda ,  Shigeru Nakamura ,  Hisataka Sugiyama ,  Kazuo Shigematsu ,  Atsushi Saito

    IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B20/10 ,  G06K7/10

    CPC分类号： G11B7/005 ,  G11B20/10009

    摘要： Method and apparatus for optically detecting information from a recording medium in which pits are formed by thermal energy of a light spot to record the information. A reproduction spot is irradiated onto the recording medium to produce a detection signal. From a differential signal of the detection signal, a signal indicative of zero points of the differential signal and a signal indicative of the presence of the pits are detected, and both the signals are used to detect positions of the pits. For stable and accurate detection of the pit position, the relation between pit size W and reproduction spot size W.sub.s is prescribed and the pit size and reproduction spot size are so set as to satisfy 0.45.ltoreq.W/W.sub.s .ltoreq.0.75.

    摘要翻译： 用于从记录介质光学检测信息的方法和装置，其中通过光点的热能形成凹坑以记录信息。 将再现点照射到记录介质上以产生检测信号。 根据检测信号的差分信号，检测出表示差分信号的零点的信号和指示凹坑存在的信号，并且这两个信号用于检测凹坑的位置。 为了稳定且准确地检测凹坑位置，规定凹坑尺寸W与再现点尺寸Ws之间的关系，并且将凹坑尺寸和再现点尺寸设定为满足0.45≤W/ Ws <0.75。

    Method and apparatus for compensating variation of read data in an optical data storage
    4.
    发明授权
    Method and apparatus for compensating variation of read data in an optical data storage 失效
    用于补偿光学数据存储器中的读取数据的变化的方法和装置

    公开(公告)号：US4835759A

    公开(公告)日：1989-05-30

    申请号：US878436

    申请日：1986-06-25

    申请人： Atsushi Saito ,  Takeshi Maeda ,  Hisataka Sugiyama ,  Kazuo Shigematsu ,  Wasao Takasugi

    发明人： Atsushi Saito ,  Takeshi Maeda ,  Hisataka Sugiyama ,  Kazuo Shigematsu ,  Wasao Takasugi

    IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/013 ,  G11B20/10 ,  G11B20/14 ,  G11B27/30

    CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/1403 ,  G11B27/3027 ,  G11B7/004 ,  G11B7/24085

    摘要： When recording domains are formed locally on a recording medium and information is recorded and reproduced by using rise and fall in a reproduced waveform obtained from the recording domains as data, timing patterns indicating start of demodulation are recorded for the lead-edge and the tail-edge of the recording domains, respectively; time interval between the timing signal for starting demodulation detected from the rise in the reproduced waveform and the timing signal for starting demodulation detected from the fall in the reproduced waveform is detected; time shifts of the signals detected from the lead-edge and the tail-edge of the recording domains succeeding the timing patterns for starting demodulation by using the time interval thus detected; and the information is stably detected as time sequential data having no jitter.

    摘要翻译： 当在记录介质上本地形成记录域时，通过使用从记录域获得的再现波形中的上升和下降来记录和再现信息作为数据，记录指示开始解调的定时模式用于前沿和尾部， 分别记录域的边缘; 检测从再生波形的上升检测到的开始解调用定时信号与从再现波形的下降检测到的开始解调用定时信号之间的时间间隔; 通过使用这样检测的时间间隔，从用于开始解调的定时模式的记录区域的前沿和尾边检测到的信号的时移; 并且信息被稳定地检测为没有抖动的时序数据。

    Method and apparatus for optical recording and reproducing with tracking servo reducing track offset
    5.
    再颁专利
    Method and apparatus for optical recording and reproducing with tracking servo reducing track offset 有权
    具有跟踪伺服减少磁道偏移的光学记录和再现的方法和装置

    公开(公告)号：USRE39013E1

    公开(公告)日：2006-03-14

    申请号：US10633655

    申请日：2003-08-05

    申请人： Toshimitsu Kaku ,  Kazuo Shigematsu ,  Hisataka Sugiyama ,  Takeshi Maeda ,  Masahiro Takasago

    发明人： Toshimitsu Kaku ,  Kazuo Shigematsu ,  Hisataka Sugiyama ,  Takeshi Maeda ,  Masahiro Takasago

    IPC分类号： G11B7/095

    CPC分类号： G11B7/094

    摘要： Disclosed is an optical recording and reproducing apparatus comprising a light source directing a light spot toward a recording medium, a detection system detecting light reflected from the recording medium to derive an electrical signal from the reflected light, an information processing circuit modulating the intensity of the light spot according to writing pulses to record information on the recording medium and using the electrical signal to reproduce information from the recording medium, and a tracking servo circuit carrying out tracking servo operation on the basis of the electrical signal and including an extracting circuit connected to a source of extracting pulses having a pulse width at least equal to the writing pulse width so that writing pulse parts contained in the electrical signal are extracted during recording information, whereby a track offset occurring during information recording can be minimized, and the stability of the tracking servo system can be improved.

    摘要翻译： 公开了一种光学记录和再现装置，包括将光点引向记录介质的光源;检测系统，其检测从记录介质反射的光以从反射光导出电信号;信息处理电路， 根据写入脉冲的光点，以记录在记录介质上的信息并使用电信号从记录介质再现信息;以及跟踪伺服电路，其基于电信号执行跟踪伺服操作，并且包括提取电路， 提取具有至少等于写入脉冲宽度的脉冲宽度的脉冲的源，从而在记录信息期间提取包含在电信号中的写入脉冲部分，由此可以最小化信息记录期间发生的磁道偏移，并且稳定性 跟踪伺服系统可以提高。

    Method and apparatus for optical recording and reproduction with tracking servo reducing track offset
    6.
    发明授权
    Method and apparatus for optical recording and reproduction with tracking servo reducing track offset 失效
    用于跟踪跟踪减少跟踪偏移的光学记录和再现的方法和装置

    公开(公告)号：US5105409A

    公开(公告)日：1992-04-14

    申请号：US230971

    申请日：1988-08-11

    申请人： Toshimitsu Kaku ,  Kazuo Shigematsu ,  Hisataka Sugiyama ,  Takeshi Maeda ,  Masahiro Takasago

    发明人： Toshimitsu Kaku ,  Kazuo Shigematsu ,  Hisataka Sugiyama ,  Takeshi Maeda ,  Masahiro Takasago

    IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/09

    CPC分类号： G11B7/094

    摘要： Disclosed is an optical recording and reproducing apparaus comprising a light source directing a light spot toward a recording medium, a detection system detecting light reflected from the recording medium to derive an electrical signal from the reflected light, an information processing circuit modulating the intensity of the light spot according to writing pulses to record information on the recording medium and using the electrical signal to reproduce information from the recording medium, and a tracking servo circuit carrying out tracking servo operation on the basis of the electrical signal and including an extracting circuit connected to a source of extracting pulses having a pulse width at least equal to the writing pulse width so that writing pulse parts contained in the electrical signal are extracted during recording information, whereby a track offset occurring during information recording can be minimized, and the stability of the tracking servo system can be improved.

    Increased intensity optical recording medium with adjacent grooves of different optical depth and a method and apparatus for reproducing the same
    8.
    发明授权
    Increased intensity optical recording medium with adjacent grooves of different optical depth and a method and apparatus for reproducing the same 失效
    具有不同光学深度的相邻凹槽的强度增加的光学记录介质及其再现方法和装置

    公开(公告)号：US5553051A

    公开(公告)日：1996-09-03

    申请号：US402304

    申请日：1995-03-10

    申请人： Hisataka Sugiyama ,  Takeshi Maeda ,  Hiroshi Ide ,  Kazuo Shigematsu ,  Masaru Ito

    发明人： Hisataka Sugiyama ,  Takeshi Maeda ,  Hiroshi Ide ,  Kazuo Shigematsu ,  Masaru Ito

    IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/26 ,  G11B7/00

    CPC分类号： G11B7/261 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/24079 ,  G11B7/00451 ,  G11B7/00454

    摘要： An optical recording medium on which information is recorded by irradiating the medium with a light spot to cause a characteristic change of an actual reflection factor, the optical recording medium including grooves of different optical depths which extend in a direction in which the light spot is moved relative to the medium and which are alternately and periodically formed in a direction perpendicular to the relative movement direction of the light spot so that a plurality of grooves thereof can be covered by the light spot, and mark recording regions provided on the flat surfaces between the grooves, the pitch of the flat surfaces between the grooves being selected to be substantially half the diameter of the light spot, thus increasing the recording density and preventing the cross-talk. A method and apparatus for reproducing the information recorded on the medium are provided. Of the reflected and diffracted light distribution obtained by irradiating the light spot on the optical recording medium, the intensity change of the 0-order and third-order interference regions on the shallow groove's side are detected in the form of electrical signals, and information signals corresponding to mark are reproduced on the basis of the detected signals.

    摘要翻译： 一种通过用光点照射介质来记录信息以引起实际反射因子的特征变化的光学记录介质，所述光学记录介质包括在光点移动的方向上延伸的不同光学深度的凹槽 相对于介质，并且在垂直于光点的相对移动方向的方向上交替地周期性地形成，使得其多个凹槽可以被光点覆盖，并且标记设置在光斑之间的平坦表面上的记录区域 槽之间的平坦表面的间距被选择为基本上是光点直径的一半，从而增加了记录密度并防止串扰。 提供了用于再现记录在介质上的信息的方法和装置。 在通过在光记录介质上照射光点而获得的反射和衍射光分布中，以浅沟槽侧的0级和3级干涉区域的强度变化以电信号的形式被检测，信息信号 基于检测到的信号再现对应于标记的标记。

    Optical recording and reproducing apparatus having a multi-spot positioning control mechanism
    10.
    发明授权
    Optical recording and reproducing apparatus having a multi-spot positioning control mechanism 失效
    具有多点定位控制机构的光记录再生装置

    公开(公告)号：US4969137A

    公开(公告)日：1990-11-06

    申请号：US155697

    申请日：1988-02-16

    申请人： Hisataka Sugiyama ,  Takeshi Maeda ,  Atsushi Saito ,  Fumio Hara

    发明人： Hisataka Sugiyama ,  Takeshi Maeda ,  Atsushi Saito ,  Fumio Hara

    IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/12 ,  G11B7/14

    CPC分类号： G11B7/14 ,  G11B7/08517 ,  G11B7/08529 ,  G11B7/08547 ,  G11B7/12 ,  G11B7/0901 ,  G11B7/0912

    摘要： In optically coupling a plurality of light sources to an optical system for focusing light beams from the light sources into spots on a record plane, a center axis of a light beam from a first one of the light sources is aligned to an optical axis of the focusing optical system, and the spots other than a first spot formed by the light beam from the first light source are rotated around the first spot on the record plane to position the spots to the respective target tracks, and a tracking error signal for at least one of the first spot and another spot is detected and the positions of the plurality of spots are integrally controlled based on the detected tracking error signal so that the plurality of spots can follow the respective target tracks. The target tracks to which the spots are to be positioned may be either one track or different tracks. The positioning of the spots to the target tracks may be done either manually or automatically. In the automatic method, a tracking error signal is detected for the first spot, and a deflection mechanism for radially swinging beams from the laser light sources is controlled to control the positions of the spots on the record plane and to cause the first spot to follow the target track.

    摘要翻译： 在将多个光源光学耦合到用于将来自光源的光束聚焦到记录平面上的光点的光学系统中，来自第一个光源的光束的中心轴线与光源的光轴对齐 聚焦光学系统，并且除了由来自第一光源的光束形成的第一光斑之外的光点围绕记录平面上的第一光点旋转，以将光斑定位到各个目标轨道，并且至少跟踪误差信号 根据检测到的跟踪误差信号检测第一点和另一个点之一，并且多个点的位置被一体地控制，使得多个点可以跟随相应的目标轨道。 斑点要被定位到的目标轨道可以是一个轨道或不同的轨道。 斑点到目标轨迹的定位可以手动或自动完成。 在自动方法中，对于第一点检测跟踪误差信号，并且控制用于从激光光源径向摆动的光束的偏转机构，以控制记录平面上的点的位置并使第一点跟随 目标轨道。