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公开(公告)号：US5001732A
公开(公告)日：1991-03-19
申请号：US458367
申请日：1989-12-28
CPC分类号： G11B7/08541
摘要： The track counter for optical disk in accordance with the present invention, that counts the number of tracks a light beam passes upon when an optical head moves over an optical disk in the radial direction, comprises a passage signal generating circuit for detecting based on a reflected light of the light beam from the optical disk, that the light beam passed upon a track and for releasing a passage signal on that occasion, a counter that counts the passage signals released by the passage signal generating circuit, a count suspending circuit for forecasting that the light beam will pass upon a specific position of a track and for suspending the count by the aforementioned counter of the passage signals during this forecasted period, and a count value compensating circuit for assuming, when the count of the passage signals is suspended by the count suspending circuit, the number of tracks the light beam passed upon during that period, and for adding this assumed number to the count value of the counter. This track counter for optical disk is arranged such that it is able to count accurately the number of tracks the light beam passed upon even when the light beam passed upon the ID sections of a track, or when the passage upon a track cannot be detected because of a scratch on the surface of the disk or the like. Thereby, when the optical head moves and slides, the access speed may be enhanced.
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公开(公告)号：US5311490A
公开(公告)日：1994-05-10
申请号：US809772
申请日：1991-12-18
CPC分类号： G11B7/08541
摘要： An optical disk drive which discriminates whether a light spot is incident on a groove or on an area therebetween by eliminating a pulse that appears in a binary envelope signal when the light spot passes a level section. The elimination is carried out based on an ODF section detecting signal, the ODF section detecting signal being a level section detecting signal which is produced by detecting a level section (ODF section) of the optical disk. The detection is carried out by differentiating an envelope signal, which is the envelope of an electric signal corresponding to the amount of light reflected from the optical disk. Accordingly, even if the optical disk in use has interrupted grooves, the optical head can be accurately moved to a desired track located on a land or on a groove.
摘要翻译： 一种光盘驱动器，其通过在光点通过电平部分时消除出现在二进制包络信号中的脉冲来鉴别光点是入射到槽还是在其上的区域。 基于ODF部分检测信号进行消除，ODF部分检测信号是通过检测光盘的电平部分（ODF部分）产生的电平部分检测信号。 通过对作为与从光盘反射的光量相对应的电信号的包络的包络信号进行微分来进行检测。 因此，即使使用中的光盘中断了凹槽，也可以将光头精确地移动到位于台面或凹槽上的期望的轨道上。
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3.发明授权Optical retrieval system for encoding pit angular data and optical recording element therefor 失效用于编码凹坑角度数据的光学检索系统及其光学记录元件
公开(公告)号：US5331623A
公开(公告)日：1994-07-19
申请号：US948098
申请日：1992-09-21
CPC分类号： G11B7/24085 , G11B7/005 , G11B7/013
摘要： In the optical recording element of the invention, alignments of long thin pits inclined in various directions with respect to the track direction are formed on the tracks and information is recorded therein according to the different inclines of the pits, thereby performing higher-density and larger-volume recording without reducing the spacing between each pit and the track pitch. The invention also discloses an optical data retrieval system for use with the above optical recording element, which scans the pit alignments with a laser beam spot, detects the inclines of the pits by obtaining the distribution of the intensity of reflected light which is caused by light diffraction at the pits, and plays back information in accordance with the inclines. Therefore, not only can the substantially same structure as that of a standard type optical data retrieval system be applied to the invention without making any complicated change, but also cross-talk is less likely to be produced in the read out signals.
摘要翻译： 在本发明的光记录元件中，在轨道上形成在各个方向上相对于轨道方向倾斜的长细孔的排列，并且根据凹坑的不同斜度记录信息，从而执行更高密度和更大的 - 体积记录，而不减少每个凹坑与轨道间距之间的间距。 本发明还公开了一种与上述光学记录元件一起使用的光学数据检索系统，其利用激光束点扫描凹坑对准，通过获得由光引起的反射光强度的分布来检测凹坑的倾斜度 在凹坑处进行衍射，并根据倾斜回放信息。 因此，不仅可以将本质上与标准型光数据检索系统基本相同的结构应用于本发明，而且不会发生任何复杂的变化，而且在读出信号中也不太可能产生串扰。
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4.发明授权Optical retrieval system for encoding pit angular data and optical recording element thereof 失效用于编码PIT角度数据的光学检索系统及其光学记录元件
公开(公告)号：US5200941A
公开(公告)日：1993-04-06
申请号：US453927
申请日：1989-12-19
CPC分类号： G11B7/24085 , G11B7/005 , G11B7/013
摘要： In the optical recording element of the invention, alignments of long thin pits inclined in various directions with respect to the track direction are formed on the tracks and information is recorded therein according to the different inclines of the pits, thereby performing higher-density and larger-volume recording without reducing the spacing between each pit and the track pitch. The invention also discloses an optical data retrieval system for use with the above optical recording element, which scans the pit alignments with a laser beam spot, detects the inclines of the pits by obtaining the distribution of the intensity of reflected light which is caused by light diffraction at the pits, and plays back information in accordance with the inclines. Therefore, not only can the substantially same structure as that of a standard type optical data retrieval system be applied to the invention without making any complicated change, but also cross-talk is less likely to be produced in the read out signals.
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公开(公告)号：US5301174A
公开(公告)日：1994-04-05
申请号：US550973
申请日：1990-07-11
CPC分类号： G11B7/08529 , G11B7/08517
摘要： An optical disk recording and reproducing apparatus in which during coarse access, an adjustable target speed is obtained using a speed offset value stored in a speed offset memory. The speed offset value being determined between a plurality of reference velocities and a plurality of adjustable offset velocity values. The system also performs fine access within a defined distance from the optical head to the designated track upon completion of the coarse access mode. The speed offset values are continually updated by to improve the accuracy of the coarse access operation saving overall access time.
摘要翻译： 一种光盘记录和再现装置，其中在粗略访问期间，使用存储在速度偏移存储器中的速度偏移值来获得可调节的目标速度。 速度偏移值在多个参考速度和多个可调偏移速度值之间确定。 在粗略访问模式完成时，该系统还在从光头到指定轨迹的限定距离内执行精细的访问。 速度偏移值不断更新，以提高粗略访问操作的精度，从而节省总体访问时间。
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公开(公告)号：US5136574A
公开(公告)日：1992-08-04
申请号：US805037
申请日：1991-12-11
申请人： Shigeo Terashima , Hirotsugu Matoba
发明人： Shigeo Terashima , Hirotsugu Matoba
IPC分类号： G11B7/0033 , G11B7/09 , G11B7/24
CPC分类号： G11B7/0033 , G11B7/09 , G11B7/24
摘要： An apparatus for recording and reproducing information using an optical card comprising a memory region in which one pit train for supplying a track servo signal and a synchronizing signal is formed at a edge portion of the memory region. The optical card achieves increased storing capacity by including only one pit train. The recording/reproduction apparatus for the card has a first and second optical heads. The first optical head scans the pit train to obtain the track servo signal and a synchronizing signal. The second optical head is used for recording and reproducing information from the optical card.
摘要翻译： 一种用于使用光卡记录和再现信息的装置，所述光卡包括其中在存储区域的边缘部分处形成有用于提供轨道伺服信号和同步信号的一个凹坑列的存储区域。 光卡通过仅包括一个坑列实现了增加的存储容量。 卡的记录/再现装置具有第一和第二光学头。 第一光头扫描坑列以获得轨道伺服信号和同步信号。 第二光头用于从光卡记录和再现信息。
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公开(公告)号：US5111031A
公开(公告)日：1992-05-05
申请号：US346804
申请日：1989-05-03
申请人： Shigeo Terashima , Hirotsugu Matoba
发明人： Shigeo Terashima , Hirotsugu Matoba
IPC分类号： G11B7/00 , G11B7/0033 , G11B7/09 , G11B7/24
CPC分类号： G11B7/09 , G11B7/0033 , G11B7/24
摘要： An optical card comprising a memory region in which one pit train for supplying a track servo signal and a synchronizing signal is formed at a edge portion of the memory region. The optical card achieves increased storing capacity by including only one pit train. A recording/reproduction apparatus for the card comprises first and second optical heads. The first optical head scans the pit train to obtain the track servo signal and a synchronizing signal. The second optical head is used for recording and reproducing information from the optical card.
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公开(公告)号：US20110096644A1
公开(公告)日：2011-04-28
申请号：US10009155
申请日：2000-04-26
CPC分类号： G11B20/10527 , G11B7/00745 , G11B7/24065 , G11B7/24082 , G11B11/10578 , G11B11/10584 , G11B11/10586 , G11B20/00007 , G11B20/1258 , G11B2020/10537 , G11B2020/10759 , G11B2020/1268 , G11B2220/2537
摘要： A small-sized, large-capacity optical disk is provided which is superior in portability. The optical disk has a diameter less than 64 mm and a thickness less than 0.8 mm. Tracks are formed with a pitch less than 0.6 μm, and the record area is divided into a plurality of zones alone the radium. The optical disk can store more than 650 MB of compressed data.
摘要翻译： 提供了便携性优异的小型，大容量光盘。 光盘的直径小于64mm，厚度小于0.8mm。 轨道形成为具有小于0.6μm的间距，并且记录区域被单独地分成镭的多个区域。 光盘可存储超过650 MB的压缩数据。
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公开(公告)号：US5740153A
公开(公告)日：1998-04-14
申请号：US801245
申请日：1997-02-19
申请人： Kenji Ohta , Shigeo Terashima , Akira Takahashi
发明人： Kenji Ohta , Shigeo Terashima , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B7/24
CPC分类号： G11B11/10584 , G11B11/10586 , G11B11/10597
摘要： A magneto-optical disk including a transparent substrate, pit strings containing information formed in spiral or concentric form on a surface of the transparent substrate, a magneto-optical recording medium layer for covering the surface of the transparent substrate having the pit strings formed thereon, and magneto-optical recording areas formed by spiral or concentric flat portions between adjacent pit strings. An optical pickup for reproducing pit information and magneto-optically-recorded information from the magneto-optical disk. A magneto-optical disk drive for recording and reproducing information on the magneto-optical disk. The magneto-optical disk has a memory capacity which is twice the memory capacity of a conventional magneto-optical disk having ROM, and is accessed at high speeds.
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公开(公告)号：US5377167A
公开(公告)日：1994-12-27
申请号：US122172
申请日：1993-09-17
申请人： Shigemi Maeda , Shigeo Terashima
发明人： Shigemi Maeda , Shigeo Terashima
IPC分类号： G11B11/10 , G11B7/013 , G11B11/105 , G11B27/02 , G11B27/031 , G11B27/034 , G11B27/036 , G11B27/10 , G11B27/11 , G11B27/30 , G11B27/32 , G11B27/34 , G11B27/36 , G11B7/00
CPC分类号： G11B27/034 , G11B11/105 , G11B11/10563 , G11B11/10595 , G11B27/036 , G11B27/105 , G11B27/11 , G11B27/329 , G11B27/36 , G11B7/24085 , G11B2220/216 , G11B2220/2525 , G11B2220/2529 , G11B2220/2545 , G11B2220/65 , G11B2220/913 , G11B27/031 , G11B27/3063
摘要： A recording/reproducing device for recording and reproducing on a rewritable recording medium which comprises absolute addresses, a sound information recording region for recording sound information entered thereto from outside and a TOC area for recording additional information on the sound information recorded in the sound information recording region. The device includes an optical head as well as a magnetic coil for recording silencing information or fading information in the TOC area, each of which respectively specifies that a desired range in the sound information recording region should be erased or a fade-in/fade-out operation adjacent to the recording start/end position of desired sound information should be executed in reproducing sound information in the sound information region, a TOC memory wherein the silencing information or the fading information read from the TOC area is stored when the recording medium is placed in the device, and a muting circuit which performs the silencing operation within the range specified by the silencing information stored in the TOC memory or a fading circuit which performs the fade-in/fade-out operation according to the fading information stored in the TOC memory.
摘要翻译： 一种用于在包括绝对地址的可重写记录介质上记录和再现的记录/再现装置，用于记录从外部输入的声音信息的声音信息记录区域和用于记录记录在声音信息记录中的声音信息的附加信息的TOC区域 地区。 该装置包括光头以及用于在TOC区域中记录消音信息或衰落信息的磁线圈，其中每个分别指定声音信息记录区域中的期望范围应被擦除或淡入/淡出 - 应在声音信息区域的再现声音信息中执行与所需声音信息的记录开始/结束位置相邻的输出操作，其中当记录介质是从存储信息或从TOC区读取的衰落信息时存储的TOC存储器 放置在该设备中的静音电路，以及静音电路，其在由存储在TOC存储器中的消音信息指定的范围内进行消音操作，或者根据存储在该存储器中的衰落信息执行淡入/淡出操作的衰落电路 TOC记忆
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