公开(公告)号：US5438563A

公开(公告)日：1995-08-01

申请号：US106717

申请日：1993-08-16

申请人： Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan

发明人： Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan

IPC分类号： G11B7/0033 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B17/04 ,  G11B25/04 ,  G11B7/08

CPC分类号： G11B25/04 ,  G11B17/0408 ,  G11B7/0033 ,  G11B7/131 ,  G11B7/1398 ,  G11B7/14

摘要： An optical information recording/reproducing device is constituted of a focus control circuit connected to a controller, a tracking control circuit, a data processing circuit, and a card feed control circuit. The data processing circuit includes a plurality of I/V converters for converting signals received by a plurality of signal reproducing light receiving elements arranged to an optical detector into current/voltage, and a plurality of binary circuits each for converting the output from the I/V converters into a binary signal in a reference level. The data processing circuit includes a selector for selecting at least two outputs of a plurality of binary circuits. The data processing circuit includes a plurality of bit-clock producing circuits and a plurality of demodulation circuits. The bit-clock producing circuits produce bit clocks based on binary signals originated from selectors and a plurality of binary circuits which are not connected to the selectors. The demodulation circuits executes sampling the two binary signals in accordance with bit clocks and executes data demodulation using the sampled results. The data processing circuit includes a plurality of memories storing demodulated results from the plurality of demodulation circuits.

摘要翻译： 光信息记录/再现装置由连接到控制器，跟踪控制电路，数据处理电路和卡片馈送控制电路的聚焦控制电路构成。 数据处理电路包括多个I / V转换器，用于将由安置在光检测器上的多个信号再现光接收元件接收的信号转换成电流/电压，以及多个二进制电路，每个用于将来自I / V转换器转换为参考电平的二进制信号。 数据处理电路包括用于选择多个二进制电路的至少两个输出的选择器。 数据处理电路包括多个位时钟产生电路和多个解调电路。 位时钟产生电路基于源自选择器的二进制信号和未连接到选择器的多个二进制电路产生位时钟。 解调电路根据位时钟对两个二进制信号进行采样，并使用采样结果执行数据解调。 数据处理电路包括存储来自多个解调电路的解调结果的多个存储器。

公开(公告)号：US5583836A

公开(公告)日：1996-12-10

申请号：US103967

申请日：1993-08-09

申请人： Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya

发明人： Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya

IPC分类号： G11B7/00 ,  G11B7/0033 ,  G11B7/004 ,  G11B7/005 ,  G11B7/085 ,  G11B7/13 ,  G11B7/14

CPC分类号： G11B7/131 ,  G11B7/08505 ,  G11B7/08547 ,  G11B7/0033 ,  G11B7/14

摘要： In an optical card recording/reproducing apparatus having a multi-track read type optical head in which a reproducing light beam is radiated on a plurality of tracks on an optical card having a large number of tracks parallel to each other so as to cause a plurality of reproducing light-receiving elements to simultaneously reproduce data of the plurality of tracks on which the reproducing light beam is radiated, the light beam is moved such that the maximum or minimum address of addresses of the tracks irradiated by the light beam is located at the target track. After one multi-track reproduction is performed, the light beam is moved by the distance corresponding to the number of multi-tracks.

摘要翻译： 在具有多轨读取型光学头的光卡记录/再现装置中，其中再现光束照射在具有彼此平行的多个磁道的光卡上的多个轨道上，以便使多个 再现光接收元件以同时再现其上放射有再现光束的多个磁道的数据，光束被移动，使得由光束照射的磁道的地址的最大或最小地址位于 目标轨道。 在执行一次多轨再现之后，光束被移动与多轨迹数相对应的距离。

公开(公告)号：US5394385A

公开(公告)日：1995-02-28

申请号：US115707

申请日：1993-09-03

申请人： Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Akira Shirai

发明人： Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Akira Shirai

IPC分类号： G11B7/09 ,  G11B7/14

CPC分类号： G11B7/0901 ,  G11B7/14

摘要： A beam-spot control unit is arranged such that a light beam is irradiated onto an optical recording medium having a plurality of tracks, through an objective lens, to detect reflecting light of beam spots formed on the tracks by three or more photo detecting elements which are arranged in a direction corresponding to a track transverse direction. From a tracking error signal which is generated by a difference signal of pairs of photo detecting elements which are selected by a selecting switch from these photo detecting elements, a control signal is generated which positions the beam spots to a plurality of recording lines within a single track. A tracking control mechanism is utilized to enable positioning of the beam spots to a plurality of recording lines within the single track to be performed.

摘要翻译： 光束点控制单元被布置成使得光束通过物镜照射到具有多个轨道的光学记录介质上，以通过三个或更多个光检测元件检测在轨道上形成的光束点的反射光， 被布置在与轨道横向对应的方向上。 从由这些光检测元件通过选择开关选择的成对的光检测元件的差分信号产生的跟踪误差信号，产生控制信号，其将波束点定位到单个的多个记录线 跟踪。 使用跟踪控制机构来使束点定位到要执行的单个轨道内的多条记录线。

公开(公告)号：US5511051A

公开(公告)日：1996-04-23

申请号：US524076

申请日：1995-09-06

申请人： Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya

发明人： Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya

IPC分类号： G11B7/0033 ,  G11B7/085 ,  G11B7/13 ,  G11B7/14 ,  G11B7/00

CPC分类号： G11B7/131 ,  G11B7/0033 ,  G11B7/08505 ,  G11B7/14

摘要： In an optical card recording/reproducing apparatus having a multi-track read type optical head in which a reproducing light beam is radiated on a plurality of tracks on an optical card having a large number of tracks parallel to each other so as to cause a plurality of reproducing light-receiving elements to simultaneously reproduce data of the plurality of tracks on which the reproducing light beam is radiated, when the light beam is to be moved to a target track to be reproduced, the maximum value of an error to be caused during moving the optical head is subtracted from a difference between a current track and the target track so as to determine a moving amount, or when an error generated during the movement of the optical head is represented by .+-.G, and the number of light-receiving elements is set to be 2G+1 or more, any one of the light-receiving elements can be located on the target track by moving the optical head once.

摘要翻译： 在具有多轨读取型光学头的光卡记录/再现装置中，其中再现光束照射在具有彼此平行的多个磁道的光卡上的多个轨道上，以便使多个 再现光接收元件以同时再现在其上放射再现光束的多个磁道的数据时，当光束移动到要再现的目标轨道时，将在 从当前轨道和目标轨道之间的差减去移动光头，以便确定移动量，或当光学头的运动期间产生的误差由+/- G表示时，光的数量 接收元件设定为2G + 1以上，光接收元件中的任一个可以通过移动光头一次而位于目标轨道上。

公开(公告)号：US5402399A

公开(公告)日：1995-03-28

申请号：US103964

申请日：1993-08-09

申请人： Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan

发明人： Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan

IPC分类号： G11B7/0033 ,  G11B7/14 ,  G11B27/10 ,  G11B27/30 ,  G11B17/22

CPC分类号： G11B7/0033 ,  G11B27/102 ,  G11B27/3027 ,  G11B7/14

摘要： In an optical card reproducing apparatus, the data of a front ID portion is read, and whether a track address can be identified is determined. If the track address cannot be identified, a flag is reset, and the data of a data portion is read. If the track address can be identified, whether the identified track address coincides with a target track address is determined. If they do not coincide, the operation is ended. If they coincide, the flag is set, and the data of the data portion is read. After the data read from the data portion is stored in a buffer memory, whether the flag is set is determined. If the flag is set, data in the buffer memory is output as the data of the target track. If the flag is reset, the data of a rear ID portion is read, and whether the track address is identified is determined. If the track address cannot be identified, the buffer memory is cleared, and the operation is ended. If the track address can be identified, whether the identified track address coincides with the target track address is determined. If they do not coincide, the buffer memory is cleared, and the operation is ended. If they coincide, data in the buffer memory is output as the data of the target track.

摘要翻译： 在光卡再现装置中，读取前ID部分的数据，并确定是否可以识别轨道地址。 如果无法识别轨道地址，则重置标志，并读取数据部分的数据。 如果可以识别轨道地址，则确定所识别的轨道地址是否与目标轨道地址一致。 如果不符合的话，操作就结束了。 如果它们一致，则设置标志，并且读取数据部分的数据。 在从数据部分读取的数据被存储在缓冲存储器中之后，确定标志是否被设置。 如果标志被设置，则缓冲存储器中的数据被输出作为目标轨道的数据。 如果标志被重置，则读取后ID部分的数据，并确定是否识别出轨道地址。 如果无法识别轨道地址，缓冲存储器被清除，操作结束。 如果可以识别轨道地址，则确定所识别的轨道地址是否与目标轨道地址一致。 如果不一致，缓冲存储器被清除，操作结束。 如果它们重合，则将缓冲存储器中的数据作为目标轨迹的数据输出。

公开(公告)号：US5400308A

公开(公告)日：1995-03-21

申请号：US107171

申请日：1993-08-17

申请人： Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani

发明人： Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani

IPC分类号： G11B7/00 ,  G11B7/0033 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/135 ,  G11B13/00

CPC分类号： G11B7/004 ,  G11B7/0033

摘要： According to the optical information recording/reproducing device of the present invention, upon recording of information, when a pit image on an optical detector which is formed by a recording optical beam spot at an information recording time arrives at a position of a O-order diffraction light spot image, while an optical card is moving in the forward direction, a light receiving element for signal reproducing senses a change in light amount. A verify signal is obtained immediately after recording based on the light amount change to perform a verify operation. Further, when a pit image on the optical detector formed by the recording optical spot arrives at a position of the image of the primary diffraction optical spot while a moving direction of the optical card is reversed and the optical card moves in the reverse direction to perform recording, a signal reproducing light receiving element senses a change in light amount. A verify signal is obtained immediately after recording based on the light amount change to perform a verify operation. Since irradiation is made in which the space between the recording optical spot and the O-order diffraction light spot is made equal to the space between the recording optical spot and the primary diffraction light spot b, an optical detector can receive the verify signal at the same timing even if the optical card moves in the forward or reverse direction.

摘要翻译： 根据本发明的光信息记录/再现装置，在记录信息时，当在信息记录时刻由记录光束点形成的光检测器上的凹坑图像到达O阶的位置时 衍射光点图像，当光卡正在向前移动时，用于信号再现的光接收元件感测光量的变化。 基于光量变化，在记录之后立即获得验证信号，以执行验证操作。 此外，当由记录光点形成的光检测器上的凹坑图像在光卡的移动方向反转并且光卡沿相反方向移动时到达主衍射光点的图像的位置，以执行 记录信号再现光接收元件感测光量的变化。 基于光量变化，在记录之后立即获得验证信号，以执行验证操作。 由于使记录光点和O级衍射光点之间的间隔等于记录光点与主衍射光点b之间的空间的照射，所以光检测器可以在 即使光卡沿正向或反向移动，也是相同的定时。

公开(公告)号：US5568458A

公开(公告)日：1996-10-22

申请号：US100160

申请日：1993-08-02

申请人： Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada

发明人： Naoaki Tani ,  Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada

IPC分类号： G11B7/00 ,  G11B7/0033 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/094 ,  G11B7/0033

摘要： An optical information recording and reproducing apparatus comprising a first and a second laser diodes for generating recording light and reproducing light, respectively. A light emission condition of the second laser diode is always controlled to the constant or predetermined light intensity which is adequate for reproduction, by an APC circuit. The first laser diode is controlled by a light-intensity control circuit so as to be brought to the intensity of light emission lower than a level which forms a pit on an optical card, in a reproducing mode other than a period of time of a recording mode. Under a focus and tracking control due to the reproducing light, a value of a focus error and a value of a tracking error due to the recording light at a low level are detected and sampled/held as a focus offset and a tracking offset. During a period of time of the recoding mode, focus control and tracking control due to the reproducing light are performed so that these offsets are brought to zero.

摘要翻译： 一种光信息记录和再现装置，包括分别产生记录光和再现光的第一和第二激光二极管。 通过APC电路将第二激光二极管的发光条件总是控制为适于再生的恒定或预定的光强度。 第一激光二极管由光强度控制电路控制，以除了记录时间段之外的再现模式中，被引入低于在光卡上形成凹坑的电平的发光强度 模式。 在由于再现光引起的聚焦和跟踪控制下，由于记录光在低电平处的聚焦误差和跟踪误差的值被检测和采样/保持为聚焦偏移和跟踪偏移。 在再编码模式的时间段期间，执行由于再现光引起的聚焦控制和跟踪控制，使得这些偏移为零。

公开(公告)号：US5398225A

公开(公告)日：1995-03-14

申请号：US103101

申请日：1993-08-09

申请人： Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani

发明人： Takumi Sugaya ,  Takao Rokutan ,  Mitsuo Oshiba ,  Takefumi Sakurada ,  Naoaki Tani

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/085 ,  G11B7/14 ,  G11B20/18

CPC分类号： G11B7/14 ,  G11B20/1833

摘要： An optical information recording/regenerating apparatus includes an optical head for irradiating a regeneration light spot to a plurality of tracks on an optical recording medium simultaneously via an objective optical system. A regenerating arrangement is provided for simultaneously scanning the plurality of tracks to which the optical head has irradiated the regeneration light spot, and then reading recorded information from the plurality of tracks. An error-correcting arrangement is provided which receives the recorded information read by the regenerating arrangement for performing error correction using the error-correcting codes for the plurality of tracks. An error-correction result memory arrangement is provided for storing results that indicate whether or not the error-correcting arrangement succeeded in error correction. A control arrangement is responsive to results stored in the error-correction result memory which indicate that error correction has not succeeded for the information regenerated from at least one track among the information regenerated from the plurality of simultaneously-scanned tracks. A driving device drives the regeneration light spot and the optical recording medium relatively to each other. The control arrangement controls the drive device so that the track for which the error correction has not succeeded will be included in a scanning range.

摘要翻译： 一种光学信息记录/再生装置包括：用于经由物镜光学系统同时向光学记录介质上的多个轨道照射再生光点的光学头。 提供再生装置，用于同时扫描光头已经照射再生光斑的多个轨道，然后从多个轨道读取记录的信息。 提供一种错误校正装置，其接收由再生装置读取的记录信息，以使用多个轨道的纠错码执行纠错。 提供纠错结果存储装置，用于存储指示纠错装置是否成功进行纠错的结果。 控制装置响应存储在纠错结果存储器中的结果，其指示对于从多个同时扫描的轨道再生的信息中的至少一个轨道再生的信息，错误校正尚未成功。 驱动装置相对于彼此驱动再生光点和光记录介质。 控制装置控制驱动装置，使得误差校正尚未成功的轨道将被包括在扫描范围内。

公开(公告)号：US5475665A

公开(公告)日：1995-12-12

申请号：US273140

申请日：1994-07-14

申请人： Naoaki Tani ,  Mitsuo Oshiba

发明人： Naoaki Tani ,  Mitsuo Oshiba

IPC分类号： G11B7/0033 ,  G11B7/0045 ,  G11B7/135 ,  G11B7/14 ,  G11B7/095

CPC分类号： G11B7/1353 ,  G11B7/0033 ,  G11B7/0045 ,  G11B7/14

摘要： An apparatus for writing and reading information on and from an optical card by projecting a writing light beam and at least two reading light beams onto the optical card includes a first semiconductor laser for emitting a writing laser beam, a second semiconductor laser for emitting a reading laser beam, a diffraction grating for diffracting the reading laser beam into multiple reading laser beams, and an objective lens for projecting the writing laser beam and the reading laser beams onto the optical card. A reading laser beam spot is formed on the optical card at a middle point between two reading laser beam spots. Images of the reading laser beam spots are received by first and second light receiving elements, respectively. By processing output signals from the first and second light receiving elements, it is possible to verify the recorded condition of pits immediately after recording in regardless of a direction in which the optical card is moved. It is also possible to check the condition of the information track immediately before the writing. In this manner, the writing operation can be performed at a high speed in a suitable and reliable manner.

摘要翻译： 一种用于通过将写入光束和至少两个读取光束投影到光卡上来从光卡读取和读取信息的装置包括用于发射写入激光束的第一半导体激光器，用于发出读取的第二半导体激光器 激光束，用于将读取激光束衍射到多个读取激光束的衍射光栅，以及用于将写入激光束和读取激光束投影到光卡上的物镜。 在两个读取激光束点之间的中间点的光卡上形成读取激光束点。 读取激光束点的图像分别由第一和第二光接收元件接收。 通过处理来自第一和第二光接收元件的输出信号，可以在记录之后立即验证凹坑的记录状态，而不管光卡移动的方向如何。 也可以在写入之前立即检查信息轨迹的状况。 以这种方式，可以以适当和可靠的方式高速执行写入操作。

公开(公告)号：US5396109A

公开(公告)日：1995-03-07

申请号：US950139

申请日：1992-09-24

申请人： Mitsuo Oshiba

发明人： Mitsuo Oshiba

IPC分类号： G11B20/14 ,  H03L7/00 ,  H04L7/033 ,  H03L7/06

CPC分类号： H04L7/0331 ,  G11B20/1403 ,  H03L7/00

摘要： A bit clock regenerating circuit comprising an edge detector made up of two flip-flops for detecting edges of a binary signal and a gating circuit, a counter receiving an edge detected pulse from the edge detector as a load signal for setting an initial value, counting clock pulses with a given frequency, and generating a bit clock according to the result of the counting, and a ROM in which multiple conversion tables are formed to supply an initial value for the counter according to an output value of the counter, and a conversion table for determining regeneration conditions is selected according to a switching signal.

摘要翻译： 一种位时钟再生电路，包括由用于检测二进制信号的边缘和门控电路的两个触发器组成的边缘检测器，接收来自边缘检测器的边缘检测脉冲作为用于设置初始值的负载信号的计数器，计数 具有给定频率的时钟脉冲，以及根据计数结果产生位时钟;以及ROM，其中形成多个转换表以根据计数器的输出值提供计数器的初始值，以及转换 根据切换信号选择确定再生条件的表。