公开(公告)号：US4426693A

公开(公告)日：1984-01-17

申请号：US288915

申请日：1981-07-31

申请人： Isao Satoh ,  Tomio Yoshida ,  Shunji Harigae ,  Kenji Koishi

发明人： Isao Satoh ,  Tomio Yoshida ,  Shunji Harigae ,  Kenji Koishi

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/09 ,  G11B7/125 ,  G11B7/126 ,  G11B17/00

CPC分类号： G11B7/126 ,  G11B17/005 ,  G11B7/0045 ,  G11B7/0938

摘要： An optical information recording and reproducing apparatus for optically recording and reproducing information on and from a disk-shaped information carrier having a guide track is disclosed. A digital track address prerecorded on the guide track is reproduced and the intensity of a recording laser beam is controlled by the reproduced digital track address so that the exposures of the recording laser beam at an inner periphery and an outer periphery of the disk-shaped information carrier rotated at a constant rotation speed are corrected to enable an optimum recording over an entire surface of the disk-shaped information carrier.

摘要翻译： 公开了一种用于在具有导轨的盘形信息载体上光学记录和再现信息的光学信息记录和再现装置。 在导轨上预先记录的数字轨道地址被再现，并且记录激光束的强度由再现的数字轨道地址控制，使得记录激光束在盘形信息的内周和外周处的曝光 校正以恒定转速旋转的载体，以使得能够在盘形信息载体的整个表面上进行最佳记录。

公开(公告)号：US4523304A

公开(公告)日：1985-06-11

申请号：US368361

申请日：1982-04-14

申请人： Isao Satoh ,  Tomio Yoshida ,  Shunji Harigae ,  Kenji Koishi

发明人： Isao Satoh ,  Tomio Yoshida ,  Shunji Harigae ,  Kenji Koishi

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B17/00 ,  G11B20/12 ,  G11B20/14 ,  G11B27/19 ,  G11B27/30 ,  G11B7/00

CPC分类号： G11B20/1217 ,  G11B17/005 ,  G11B20/1419 ,  G11B20/1426 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/007 ,  G11B7/013 ,  G11B2020/10888 ,  G11B2220/2537

摘要： A modulation and demodulation system for an optical data recording and reproducing apparatus is disclosed in which, in an optical disc having an optical guide track and capable of recording and reproducing optically, the guide track is divided into a plurality of data sectors and the recording or reproduction or reading is effected by data sector. The modulation system for the data field for recording the data is different from that for the identification field containing identification data such as a track address and a sector address in such a way that the identification field is reproduced at high reliability and high demodulation speed while at the same time recording data at high density in the data field.

摘要翻译： 公开了一种用于光学数据记录和再现装置的调制和解调系统，其中在具有光导轨道并能够光学记录和再现的光盘中，导轨被分成多个数据扇区，并且记录或 复制或阅读由数据部门进行。 用于记录数据的数据场的调制系统与包含诸如轨道地址和扇区地址之类的识别数据的识别场的调制系统不同，使得识别场以高可靠性和高解调速度再现，同时在 同时在数据字段中以高密度记录数据。

公开(公告)号：US4484319A

公开(公告)日：1984-11-20

申请号：US301420

申请日：1981-09-11

申请人： Kenji Koishi ,  Tomio Yoshida ,  Isao Satoh ,  Shunji Harigae

发明人： Kenji Koishi ,  Tomio Yoshida ,  Isao Satoh ,  Shunji Harigae

IPC分类号： G11B7/085 ,  G11B7/095 ,  G11B21/10

CPC分类号： G11B7/0953 ,  G11B7/08541

摘要： A track searching system for an optical information recording and reproducing apparatus in which a disc-like information carrier provided with concentric or spiral guide tracks of a channel-like configuration is used as an information recording and storing means and adapted to be scanned by a light beam for recording or retrieval of information. Light flux reflected by the information carrier and presenting variable distribution of light intensity is received by paired photoelectric elements. A difference signal and a sum signal derived from the output signals from the photoelectric elements or a reproduced RF signal representative of reproduced information undergo phase comparison processing, the result of which is utilized for determining the direction and number of guide tracks traversed by the scanning light beam. A desired track is searched and accessed with high accuracy at a high speed for assuring a positive and rapid information recording or retrieval at the desired track regardless of eccentricity of the information carrier, variations in the scanning speed, and the presence or absence of a recorded track.

摘要翻译： 一种用于光信息记录和再现装置的轨道搜索系统，其中将具有通道状结构的同心或螺旋导轨的盘状信息载体用作信息记录和存储装置，并且适于被光扫描 光束用于记录或检索信息。 由信息载体反射的光通量和呈现光强的可变分布由成对的光电元件接收。 来自光电元件的输出信号的差分信号和和信号或表示再现信息的再生RF信号进行相位比较处理，其结果用于确定由扫描光穿过的导轨的方向和数量 光束。 以高速度高精度地搜索和访问期望的轨道，以确保在期望的轨道上的正和快速的信息记录或检索，而不管信息载体的偏心，扫描速度的变化以及是否存在记录的 跟踪。

公开(公告)号：US4759006A

公开(公告)日：1988-07-19

申请号：US42520

申请日：1987-04-27

申请人： Kenji Koishi ,  Tomio Yoshida ,  Isao Satoh ,  Shunji Ohara ,  Yuzuru Kuroki

发明人： Kenji Koishi ,  Tomio Yoshida ,  Isao Satoh ,  Shunji Ohara ,  Yuzuru Kuroki

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B19/04

CPC分类号： G11B7/126 ,  G11B19/04 ,  G11B7/08505 ,  G11B7/0946 ,  Y10S358/907

摘要： A track skipping detection and control arrangement for an optical recording and reproducing disc formed with guide tracks for use in an optical information recording and reproducing apparatus. According to the track skipping detection and control arrangement of the present invention, any sudden track skipping which may take place during recording can be instantaneously detected by the track traversing signal so as to reduce the recording power for the prevention of erroneous recording to neighboring tracks. Moreover, by distinguishing the track traversing signal detected during the jumping operation for repeated continuous reproduction of the particular one track of the optical disc having spiral tracks, from the traversing signal due to the track skipping, erroneous recording may be similarly prevented also with respect to the optical disc having the tracks in the spiral configuration.

摘要翻译： 一种用于光学记录和再现盘的轨道跳过检测和控制装置，其形成有用于光信息记录和再现装置的导轨。 根据本发明的轨道跳跃检测和控制装置，可以通过轨迹穿越信号瞬时地检测到在记录期间可能发生的任何突然的轨道跳跃，从而降低记录功率，以防止对相邻轨迹的错误记录。 此外，通过区分在具有螺旋轨道的光盘的特定一个轨道的重复连续再现的跳跃操作期间检测到的轨道横动信号，由于轨道跳过导致的横动信号，也可以相似地防止错误记录 该光盘具有螺旋形状的轨道。

公开(公告)号：US4545044A

公开(公告)日：1985-10-01

申请号：US408698

申请日：1982-08-16

申请人： Isao Satoh ,  Tomio Yoshida ,  Shunji Ohara ,  Kenji Koishi

发明人： Isao Satoh ,  Tomio Yoshida ,  Shunji Ohara ,  Kenji Koishi

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/007 ,  G11B17/00 ,  G11B27/034 ,  G11B27/036 ,  G11B27/11 ,  G11B27/19 ,  G11B27/24 ,  G11B27/32

CPC分类号： G11B17/005 ,  G11B27/034 ,  G11B27/036 ,  G11B27/11 ,  G11B27/19 ,  G11B27/24 ,  G11B27/329 ,  G11B7/0045 ,  G11B7/007 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/65

摘要： In an optical disc having a file region and a directory region for carrying various pieces of information or data, one or more designated information can be erased by irradiating a laser light beam on a corresponding region in the file region where the light beam is modulated by a superposing writing signal which may be a d.c. or a predetermined a.c. signal. When it is intended to renew the information, designated information is first read out and stored in an external memory prior to performing superposing writing. Meanwhile, the data is renewed and is then written on an unused region in the file region. The directory of the renewed data region is also written so that the renewed information will be read out by searching the new directory. In another embodiment of the invention, the information in the file region is not erased to renew the same, but its directory is erased by superposing writing. A new directory for a renewed information, which is written in unused region in the same manner as the above, is written so that the renewed information can be read out by using the new directory. When reproducing, an envelope of the reproduced signal is detected to see whether information can be read out or not. Thus, erased information is skipped to reproduce only unerased information.

摘要翻译： 在具有用于承载各种信息或数据的文件区域和目录区域的光盘中，可以通过将激光束照射在光束被调制的文件区域中的相应区域上来消除一个或多个指定信息 一个叠加的写信号可能是直流电 或预定的a.c. 信号。 当意图更新信息时，首先将指定的信息读出并存储在外部存储器中，然后再进行叠加写入。 同时，更新数据，然后写入文件区域中的未使用区域。 更新的数据区域的目录也被写入，以便通过搜索新的目录来读出更新的信息。 在本发明的另一个实施例中，文件区域中的信息不被擦除以更新它，但是通过叠加写入来擦除其目录。 以与上述相同的方式写入未使用区域的新信息的新目录被写入，以便可以通过使用新目录读出更新的信息。 当再现时，检测再现信号的包络线以查看是否可读出信息。 因此，擦除的信息被跳过以仅再现未被更新的信息。

公开(公告)号：US5119363A

公开(公告)日：1992-06-02

申请号：US331326

申请日：1981-12-16

申请人： Isao Satoh ,  Tomio Yoshida ,  Shunji Ohara ,  Kenji Koishi

发明人： Isao Satoh ,  Tomio Yoshida ,  Shunji Ohara ,  Kenji Koishi

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B17/00 ,  G11B19/28 ,  G11B23/42 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

CPC分类号： G11B7/24085 ,  G11B17/005 ,  G11B19/28 ,  G11B23/42 ,  G11B27/105 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B7/00745 ,  G11B2220/20 ,  G11B2220/2587

摘要： In an optical recording disk having groove-like guide tracks, a rotation index mark is provided to indicate a rotation starting point where the rotation index mark is constructed of a grooved-like phase structure. The rotation index mark may be formed in a track which is located separated from the information recording tracks, and may be detected optically without using a laser light beam. The rotation index mark is used to control the rotation of the disk as well as writing and reading operation of an optical disk recording/reproducing apparatus so that various information, such as video signals, can be accurately recorded and reproduced. In the case of recording digital signals, the guide tracks may be divided into a plurality of sector regions, and sector index marks corresponding to respective sector regions may also be formed together with the rotation index mark. Furthermore, an address index mark indicative of the position of track address region radially formed in the guide tracks may also be added.

摘要翻译： 在具有槽状导轨的光记录盘中，设有旋转指示标记，以指示旋转指示标记由沟槽状相位结构构成的旋转起点。 旋转指示标记可以形成在与信息记录轨迹分离的轨道中，并且可以在不使用激光的情况下光学地检测。 旋转指示标记用于控制盘的旋转以及光盘记录/再现装置的写入和读取操作，使得可以准确地记录和再现诸如视频信号的各种信息。 在记录数字信号的情况下，引导轨道可以被划分为多个扇区区域，并且也可以与旋转指示标记一起形成与各个扇区区域对应的扇区索引标记。 此外，还可以添加表示在导轨中径向形成的轨道地址区域的位置的地址索引标记。

公开(公告)号：US4689780A

公开(公告)日：1987-08-25

申请号：US773674

申请日：1985-09-09

申请人： Shunji Ohara ,  Tomio Yoshida ,  Isao Satoh ,  Kenji Koishi

发明人： Shunji Ohara ,  Tomio Yoshida ,  Isao Satoh ,  Kenji Koishi

IPC分类号： G02B27/28 ,  G11B7/08 ,  G11B7/12 ,  G11B7/095 ,  G11B7/135

CPC分类号： G02B27/283 ,  G11B7/08 ,  G11B7/12

摘要： A light beam emitted from a semiconductor laser passes through optical elements which include a condenser lens, a magnifier prism, and a focussing lens to obtain a substantially circular spot of light on a disc. The magnifier prism is constructed such that only the narrower cross-section of the elliptical light beam emitted from the condenser lens is magnified by the incidence surface of the magnifier prism to obtain a substantially circular light beam. The light beam thus obtained is reflected by the prism so that it becomes substantially perpendicular to the beam emitted from the condenser lens. After reflection by the disc, the light passes through a splitter prism. The splitter prism has a reflecting surface and a transmitting surface which spatially bisect the light beam reflected from the disc, a lens and other components. The bisected portions of the beam fall on a photodetector for focussing control and a photodetector for tracking control.

公开(公告)号：US4535439A

公开(公告)日：1985-08-13

申请号：US444456

申请日：1982-11-24

申请人： Isao Satoh ,  Tomio Yoshida ,  Shunji Ohara ,  Kenji Koishi

发明人： Isao Satoh ,  Tomio Yoshida ,  Shunji Ohara ,  Kenji Koishi

IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B7/085 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B27/32 ,  G11B7/24 ,  G11B7/00 ,  G11B17/22

CPC分类号： G11B7/24085 ,  G11B27/19 ,  G11B27/32 ,  G11B7/00745 ,  G11B7/08517 ,  G11B2220/20 ,  G11B27/24 ,  G11B27/3027

摘要： The disclosure is directed to an optical recording and reproducing disc in which each track circumference of guide tracks formed into a concentric or spiral configuration is divided into a plurality of sectors for selective recording and reproduction of information in any desired sectors. Sector separating zones of predetermined configuration are provided at starting portions of the respective sectors, while predetermined sector marks indicating the sector separating zones are formed on an index track provided at an outer or inner periphery of the disc in positions corresponding to the sector separating zones so that, during selection of the sectors at recording and reproduction, reproduction signals by the sector marks are used for selection of the sectors, while starting of the recording and reproduction is effected by the reproduced information of the sector separating zones.

摘要翻译： 本公开涉及一种光学记录和再现盘，其中形成为同心或螺旋构造的导轨的每个轨道周长被划分成多个扇区，用于在任何期望的扇区中选择性地记录和再现信息。 在各个扇区的起始部分设置具有预定配置的扇区分隔区，而指示扇区分隔区的预定扇区标记形成在与扇区分隔区对应的位置处设置在盘的外周或内周的分度轨上， 在记录和重放扇区的选择期间，扇区标记的再现信号用于扇区的选择，而通过扇区分离区的再现信息来进行记录和再现的开始。

公开(公告)号：US4509156A

公开(公告)日：1985-04-02

申请号：US445273

申请日：1982-11-29

申请人： Shunji Ohara ,  Tomio Yoshida ,  Isao Satoh ,  Kenji Koishi

发明人： Shunji Ohara ,  Tomio Yoshida ,  Isao Satoh ,  Kenji Koishi

IPC分类号： G11B7/125 ,  G11B7/126 ,  H01S5/0683 ,  G11B7/00 ,  G11B27/36

CPC分类号： G11B7/126 ,  H01S5/06832

摘要： A system for driving a semiconductor laser which is especially adapted for use with an optical recording and reproducing device is disclosed. In the write mode the power of laser light emitted from the semiconductor laser is so raised above a threshold or critical level that the laser beam focused on the surface of a recording medium can cause physical, chemical or electromagnetical changes thereof, but in the readout or reproduction mode, the power of laser light is lowered than the threshold or critical level and focused on the recording medium. A laser light power control loop is provided which is enabled or energized only in the readout or reproduction mode, so that the laser light can be maintained at a predetermined level. On the other hand, this control loop is disabled in the write or recording mode so that a predetermined value of current is superposed on the readout current sampled and held immediately before the write or recording mode is initiated and the current thus superposed flows into the semiconductor laser, whereby the power of laser light can be rapidly raised from the readout or reproducing laser light power to the write or recording laser light power.

摘要翻译： 公开了一种用于驱动特别适用于光学记录和再现装置的半导体激光器的系统。 在写入模式中，从半导体激光器发射的激光的功率被提高到超过记录介质表面上的激光束可以引起其物理，化学或电磁变化的阈值或临界水平，但是在读出或 再现模式下，激光的功率低于阈值或临界水平，并集中在记录介质上。 提供激光光功率控制回路，其仅在读出或再现模式下被启用或激励，使得激光可以保持在预定水平。 另一方面，在写入或记录模式下禁止该控制环路，使得预定电流值叠加在开始写入或记录模式之前采样并保持的读出电流，并且这样叠加的电流流入半导体 激光，从而激光的功率可以从读出或再现激光功率快速升高到写入或记录激光功率。

公开(公告)号：US4566088A

公开(公告)日：1986-01-21

申请号：US542014

申请日：1983-10-12

申请人： Tomio Yoshida ,  Isao Satoh ,  Shunji Ohara ,  Kenji Koishi ,  Yuzuru Kuroki

发明人： Tomio Yoshida ,  Isao Satoh ,  Shunji Ohara ,  Kenji Koishi ,  Yuzuru Kuroki

IPC分类号： G11B7/135 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/08 ,  G11B7/125 ,  G11B7/00

CPC分类号： G11B7/125 ,  G11B7/00557 ,  G11B7/00745 ,  G11B7/08

摘要： An optical and reversible recording and reproducing apparatus providing a practical apparatus in which information signals can be recorded, reproduced and erased by irradiating a laser beam and the like on the substrate to be optically recorded. More practically, there is provided such an apparatus wherein two light sources such as lasers having different wavelengths are used, and a first almost circular micro-lightspot is produced by one light source, while a second elliptic light spot having a longitudinal diameter in the tangential direction of a guide track on a disc is produced by the other light source. These first and second light spots are closely irradiated on one and the same guide track of an optical recording disc. The recording and reproducing of the signals are performed using the first light spot while the erasure of the recorded signals can be made by using the second light spot or using both first and second light spots in combination.

摘要翻译： 一种提供实用的设备的光学和可逆记录和再现设备，其中可以通过在光学记录的基板上照射激光束等来记录，再现和擦除信息信号。 更实际地，提供了这样的装置，其中使用诸如具有不同波长的激光器的两个光源，并且由一个光源产生第一几乎圆形的微光点，而具有切线中的纵向直径的第二椭圆形光点 光盘上的导轨的方向由另一光源产生。 这些第一和第二光斑被紧密地照射在光学记录盘的同一导轨上。 使用第一光点执行信号的记录和再现，同时可以通过使用第二光斑或同时使用第一和第二光点来组合擦除记录信号。