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1. 发明授权

US4731771A Tracking servo setting method and apparatus 失效
标题翻译：跟踪伺服设定方法和装置
公开(公告)号：US4731771A
公开(公告)日：1988-03-15
申请号：US829024
申请日：1986-02-13
申请人： Takeshi Maeda , Kazuo Shigematsu , Shigeru Nakamura , Yoshito Tsunoda , Masuo Kasai
发明人： Takeshi Maeda , Kazuo Shigematsu , Shigeru Nakamura , Yoshito Tsunoda , Masuo Kasai
IPC分类号： G11B7/085 , G11B7/09
CPC分类号： G11B7/08529 , G11B7/08517 , G11B7/0901
摘要： This invention relates to a track setting method for a tracking servo system in an optical disk device and a device therefor. According to this invention the track passage velocity when the light spot moves across the track is detected and setting of the light spot onto the track is performed under the condition that the passage velocity thus detected is lower than a predetermined velocity. In the case where the passage velocity is greater than the predetermined velocity, the light spot is forced to move so that the passage velocity is lower than the predetermined velocity and the light spot is set up thereafter.
摘要翻译：本发明涉及一种用于光盘装置中的跟踪伺服系统的轨道设置方法及其装置。根据本发明，检测到光点移动通过轨迹时的轨迹通过速度，并且在由此检测到的通过速度低于预定速度的条件下执行光点到轨道上的设置。在通过速度大于预定速度的情况下，迫使光斑移动，使得通过速度低于预定速度，此后设定光斑。

2. 发明授权

US4525826A Optical track position detecting apparatus and optical information processor using the same 失效
标题翻译：光轨位置检测装置及使用其的光信息处理器
公开(公告)号：US4525826A
公开(公告)日：1985-06-25
申请号：US402234
申请日：1982-07-27
申请人： Shigeru Nakamura , Yoshito Tsunoda , Kazuo Shigematsu , Toshimitsu Kaku , Takeshi Maeda , Tsuyoshi Kato
发明人： Shigeru Nakamura , Yoshito Tsunoda , Kazuo Shigematsu , Toshimitsu Kaku , Takeshi Maeda , Tsuyoshi Kato
IPC分类号： G01B11/00 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/13 , G11B7/00
CPC分类号： G11B7/0901 , G11B7/09 , G11B7/0953 , G11B7/12 , G11B7/13
摘要： In an optical information processor such as an optical disc apparatus, when a light beam is irradiated to a plurality of tracks on an information recording medium, the plurality of tracks act as a diffraction grating. Areas in which light receiving parts of a light detector are arranged are determined by a track pitch, a wavelength and a numerical aperture of a condenser lens so that the light detector detects only a change in a light intensity due to an interference between a 0-order diffracted light ray and a 1-order diffracted light ray.
摘要翻译：在诸如光盘装置的光学信息处理器中，当光束照射到信息记录介质上的多个轨道时，多个轨道用作衍射光栅。通过光圈间距，聚光透镜的波长和数值孔径确定其中布置有光检测器的光接收部分的区域，使得光检测器仅检测由于0- 1级衍射光线和1级衍射光线。

3. 发明授权

US4835756A Optical memory apparatus using an optical disc having guide-grooves of V-shape and predetermined optical depth and access method therefor 失效
标题翻译：使用具有V形导向槽和预定光学深度的光盘的光存储装置及其访问方法
公开(公告)号：US4835756A
公开(公告)日：1989-05-30
申请号：US32506
申请日：1987-03-31
申请人： Toshimitsu Kaku , Takeshi Maeda , Shigeru Nakamura , Masaru Ito , Kazuo Shigematsu , Yoshito Tsunoda
发明人： Toshimitsu Kaku , Takeshi Maeda , Shigeru Nakamura , Masaru Ito , Kazuo Shigematsu , Yoshito Tsunoda
IPC分类号： G11B7/00 , G11B7/005 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/24
CPC分类号： G11B7/0938 , G11B7/08505 , G11B7/24079 , G11B7/24076
摘要： An optical memory apparatus employs an optical disc having a plurality of guide-grooves in spiral and concentrical form and a plurality of flat tracks each arranged between adjacent two of the guide-grooves for recording information thereon, and the depth of the guide-grooves is suitably selected to increase the degree of modulation of a track cross signal, thereby performing a stable cross track counting by the use of the track cross signal and a tracking signal. One feature of the invention relies in that the modulation degree of the track cross signal is in the range between 30 and 60%. A second feature of the invention is that the guide-grooves are formed into a V shape and have an optical depth of .lambda./6 to .lambda./5 (.lambda. is the wavelength of the light used). In accordance with the invention, not ony a stable cross track counting is realized, but also the tracking signal is not practically varied with variations in the depth of the guide-grooves, thereby ensuring a highly accurate and stable tracking control.
摘要翻译：一种光存储装置采用具有多个螺旋形和同心形状的导向槽的光盘，以及多个平行轨道，每个平行轨迹布置在相邻的两个导槽之间，用于在其上记录信息，并且导向槽的深度为适当地选择以增加轨道交叉信号的调制度，从而通过使用轨道交叉信号和跟踪信号执行稳定的交叉轨道计数。本发明的一个特征在于，轨道交叉信号的调制度在30％与60％之间。本发明的第二个特征是导槽形成为V形，并且具有λ/ 6至λ/ 5的光学深度（λ是所用光的波长）。根据本发明，不能实现稳定的交叉轨道计数，而且跟踪信号实际上不随着导槽深度的变化而变化，从而确保高精度和稳定的跟踪控制。

4. 发明授权

US4866687A Optical disc access method and optical disk storage using coarse and fine actuators 失效
标题翻译：光盘存取方法和光盘存储使用粗细细致动器
公开(公告)号：US4866687A
公开(公告)日：1989-09-12
申请号：US240487
申请日：1988-09-06
申请人： Masuo Kasai , Takeshi Maeda , Kazuo Shigematsu , Toshimitsu Kaku , Masahiro Takasago
发明人： Masuo Kasai , Takeshi Maeda , Kazuo Shigematsu , Toshimitsu Kaku , Masahiro Takasago
IPC分类号： G11B7/085 , G11B7/095
CPC分类号： G11B7/08588 , G11B7/08517 , G11B7/08541 , G11B7/0953 , Y10S358/907
摘要： An optical disk storage access method using a fine and coarse actuators for positioning a light spot to an intended track on the disk, wherein a pulse is generated each time the light spot has traversed a track, the pulses are counted to determine the distance from the current spot position to a target track, the fine actuator is activated depending on the measured distance, and the fine and coarse actuators are operated in unison so that the light spot is positioned to the target track.
摘要翻译：一种光盘存储访问方法，使用精细和粗略的致动器将光点定位到盘上的预期轨道，其中每当光点已经穿过轨道时产生脉冲，则脉冲被计数以确定距离当前光点位置到目标轨道，精细致动器根据测量的距离被激活，并且精细和粗略的致动器被一致地操作，使得光点被定位到目标轨道。

5. 发明授权

US4949331A Apparatus and record carrier for optical disc memory with correction pattern and master disc cutting apparatus 失效
标题翻译：具有校正图案和主盘切割装置的光盘存储器的装置和记录载体
公开(公告)号：US4949331A
公开(公告)日：1990-08-14
申请号：US875442
申请日：1986-06-17
申请人： Takeshi Maeda , Yoshito Tsunoda , Kazuo Shigematsu , Toshimitsu Kaku
发明人： Takeshi Maeda , Yoshito Tsunoda , Kazuo Shigematsu , Toshimitsu Kaku
IPC分类号： G11B7/007 , G11B7/09 , G11B7/26 , G11B11/105
CPC分类号： G11B7/261 , G11B11/10565 , G11B11/10578 , G11B11/10582 , G11B7/0901 , G11B7/0938 , G11B7/094 , G11B7/24082
摘要： A record carrier having a disc-shaped substrate and a recording layer for optically writing information therein is disclosed which includes a guide groove extended in the rotational direction of the record carrier so that a plurality of revolutions of the guide groove are spaced apart from each other in radial directions of the record carrier, and a pit pattern provided between adjacent guide grooves, at positions arranged at intervals in the above rotational direction, for detecting the deviation of a light spot from the center line between adjacent guide grooves. The recording/reproducing operation for this record carrier is performed in such a manner that the first tracking error signal is detected from diffracted light from the guide groove, the second tracking error signal is detected from the pit pattern, and information is recorded in and reproduced from a land formed between adjacent guide grooves in a state that a tracking operation is performed using the first and second tracking error signals. The second tracking error signal detected from the pit pattern is not affected by the tilting of the record carrier and the movement of the light spot. When a tracking signal obtained by adding the first and second tracking error signals to each other, is used in a closed-loop tracking system, a stable tracking operation can be performed. The polarity of the pit pattern is reversed on every track, and hence a polarity pit having a depth of .lambda./4 (where .lambda. indicates the wavelength of a reproducing light beam) is provided in the record carrier, to reverse the polarity of the second tracking signal on every track on the basis of a signal from the polarity pit.
摘要翻译：公开了一种具有盘形基板和用于在其中光学地写入信息的记录层的记录载体，其包括沿着记录载体的旋转方向延伸的引导槽，使得引导槽的多个转动彼此间隔开在记录载体的径向方向上设置的凹坑图案，以及设置在相邻引导槽之间的位置，在沿上述旋转方向间隔设置的位置处，用于检测光点与相邻引导槽之间的中心线的偏离。该记录载体的记录/再现操作以从导槽的衍射光检测第一跟踪误差信号，从凹坑图案检测第二跟踪误差信号并将信息记录并再现在使用第一和第二跟踪误差信号执行跟踪操作的状态下从形成在相邻引导槽之间的区域。从凹坑图案检测到的第二跟踪误差信号不受记录载体的倾斜和光点的移动的影响。当在闭环跟踪系统中使用通过将第一和第二跟踪误差信号彼此相加而获得的跟踪信号时，可以执行稳定的跟踪操作。凹坑图案的极性在每个轨道上反转，因此在记录载体中提供具有λ/ 4深度（其中λ表示再现光束的波长）的极性凹坑，以反转第二基于来自极性凹坑的信号在每个轨道上跟踪信号。

6. 发明授权

US4807210A Optical information processing apparatus 失效
标题翻译：光信息处理装置
公开(公告)号：US4807210A
公开(公告)日：1989-02-21
申请号：US71183
申请日：1987-07-08
申请人： Toshimitsu Kaku , Kazuo Shigematsu , Yoshito Tsunoda , Takeshi Maeda
发明人： Toshimitsu Kaku , Kazuo Shigematsu , Yoshito Tsunoda , Takeshi Maeda
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0055 , G11B7/09 , G11B7/30 , G11B11/105 , G11B19/04 , G11B27/19 , G11B27/30
CPC分类号： G11B27/19 , G11B11/10517 , G11B11/10576 , G11B11/10595 , G11B19/04 , G11B27/3027 , G11B7/0901 , G11B7/0938 , G11B2220/20
摘要： An optical information processing apparatus uses an optical disk having correction marks such as mirror surfaces or wobbled pits intermittently arranged along a guide track. In a reproduce mode, tracking control is effected by correcting a tracking signal by a tracking offset component detected by the correction marks. In a record or erase mode, the track offset correction is deactivated and record or erase operation is controlled in accordance with an output level of the detected track offset component so that incomplete eraser of recorded data is prevented.
摘要翻译：光学信息处理设备使用具有诸如镜面的校正标记的光盘或沿着导轨间歇地布置的摆动凹坑。在再现模式中，通过由校正标记检测到的跟踪偏移分量来校正跟踪信号来实现跟踪控制。在记录或擦除模式中，轨道偏移校正被禁用，并且根据检测到的轨道偏移分量的输出电平来控制记录或擦除操作，从而防止记录数据的不完整的橡皮擦。

7. 发明授权

US4563760A Method of detecting light spot control signal 失效
标题翻译：光点控制信号检测方法
公开(公告)号：US4563760A
公开(公告)日：1986-01-07
申请号：US401020
申请日：1982-07-22
申请人： Takeshi Maeda , Kazuo Shigematsu , Masahiro Takasago , Yasumitsu Mizoguchi , Zenji Tsutsumi , Yoshito Tsunoda , Motoo Uno
发明人： Takeshi Maeda , Kazuo Shigematsu , Masahiro Takasago , Yasumitsu Mizoguchi , Zenji Tsutsumi , Yoshito Tsunoda , Motoo Uno
IPC分类号： G02B7/28 , G11B7/08 , G11B7/09 , G11B7/00
CPC分类号： G11B7/08 , G11B7/09 , G11B7/0901 , G11B7/0941
摘要： A method of detecting a light spot control signal is disclosed in which, when information is reproduced from an optical disk for optically recording information, a signal level obtained at a high-reflectivity portion of the optical disk is taken out of a signal reproduced from the optical disk, and is used as a control signal, which controls a light spot so that it tracks information stored in the optical disk.
摘要翻译：公开了一种检测光点控制信号的方法，其中当从用于光学记录信息的光盘再现信息时，从从光盘中再现的信号中取出在光盘的高反射率部分获得的信号电平光盘，并且被用作控制信号，其控制光点，使得其跟踪存储在光盘中的信息。

8. 发明授权

US5084860A Apparatus for optical disc memory with correction pattern and master disc cutting apparatus 失效
标题翻译：具有校正图案和主光盘切割设备的光盘存储器的设备
公开(公告)号：US5084860A
公开(公告)日：1992-01-28
申请号：US551025
申请日：1990-07-11
申请人： Takeshi Maeda , Yoshito Tsunoda , Kazuo Shigematsu , Toshimitsu Kaku
发明人： Takeshi Maeda , Yoshito Tsunoda , Kazuo Shigematsu , Toshimitsu Kaku
IPC分类号： G11B7/007 , G11B7/09 , G11B7/26 , G11B11/105
CPC分类号： G11B7/261 , G11B11/10565 , G11B11/10578 , G11B11/10582 , G11B7/0901 , G11B7/0938 , G11B7/094 , G11B7/24082
摘要： A record carrier having a disc-shaped substrate and a recording layer for optically writing information therein is disclosed which includes a guide groove extended in the rotational direction of the record carrier so that a plurality of revolutions of the guide groove are spaced apart from each other in radial directions of the record carrier, and a pit pattern provided between adjacent guide grooves, at positions arranged at intervals in the above rotational direction, for detecting the deviation of a light spot from the center line between adjacent guide grooves. The recording/reproducing operation for this record carrier is performed in such a manner that the first tracking error signal is detected from diffracted light from the guide groove, the second tracking error signal is detected from the pit pattern, and information is recorded in and reproduced from a land formed between adjacent guide grooves in a state that a tracking operation is performed using the first and second tracking error signals. The second tracking error signal detected from the pit pattern is not affected by the tilting of the record carrier and the movement of the light spot. When a tracking signal obtained by adding the first and second tracking error signals to each other, is used in a closed-loop tracking system, a stable tracking operation can be performed. The polarity of the pit pattern is reversed on every track, and hence a polarity pit having a depth of .lambda./4 (where .lambda. indicates the wavelength of a reproducing light beam) is provided in the record carrier, to reverse the polarity of the second tracking signal on every track on the basis of a signal from the polarity pit.

9. 发明授权

US4743774A Method and apparatus for optical detection of information 失效
标题翻译：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。

10. 发明授权

US4733388A Information recording disc 失效
标题翻译：信息记录盘
公开(公告)号：US4733388A
公开(公告)日：1988-03-22
申请号：US894862
申请日：1986-08-08
申请人： Nobuyuki Fujimoto , Shinichi Abe , Yoshito Tsunoda , Kazuo Shigematsu , Yasunori Kanazawa , Toshinori Sugiyama , Tetsurou Ikegaki
发明人： Nobuyuki Fujimoto , Shinichi Abe , Yoshito Tsunoda , Kazuo Shigematsu , Yasunori Kanazawa , Toshinori Sugiyama , Tetsurou Ikegaki
IPC分类号： G11B17/028 , G11B19/20 , G11B23/00 , G11B25/04
CPC分类号： G11B17/0282 , G11B19/2009 , G11B23/0035
摘要： An information recording disc is provided with a magnetic attracting member in the form of metal piece or magnetic material which serves for attracting a disc member for recording, in particular, for optical recording and reproducing of information, to a spindle of a recording and reproducing apparatus. The magnetic attracting member is held in the space of a holder which is fixedly secured to the disc without the magnetic attracting member being fixedly secured to the disc. This arrangement enables a magnetic clamping of the disc member which provides for a decrease of retardation and is suitable for miniaturization of the apparatus.
摘要翻译：信息记录盘设置有金属片或磁性材料形式的吸磁构件，其用于吸引用于记录的盘构件，特别是用于光学记录和再现信息的盘构件到记录和再现装置的主轴。磁吸引构件保持在固定地固定到盘的保持器的空间中，而磁吸引构件固定地固定在盘上。这种布置使得能够减小延迟的盘构件的磁夹紧并且适合于装置的小型化。

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