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    • 1. 发明授权
    • Optical information recording/reproducing device which simultaneously
reproduces information from plural tracks and optical information
recording/reproducing method
    • 光信息记录/再现装置,其同时从多个磁道再现信息和光信息记录/再现方法
    • US5438563A
    • 1995-08-01
    • US106717
    • 1993-08-16
    • Mitsuo OshibaTakefumi SakuradaNaoaki TaniTakumi SugayaTakao Rokutan
    • Mitsuo OshibaTakefumi SakuradaNaoaki TaniTakumi SugayaTakao Rokutan
    • G11B7/0033G11B7/13G11B7/135G11B7/14G11B17/04G11B25/04G11B7/08
    • G11B25/04G11B17/0408G11B7/0033G11B7/131G11B7/1398G11B7/14
    • 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.
    • 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。
    • 5. 发明授权
    • Apparatus and method for reproducing information data from optical cards
    • 用于从光卡再现信息数据的设备和方法
    • US5402399A
    • 1995-03-28
    • US103964
    • 1993-08-09
    • Mitsuo OshibaTakefumi SakuradaNaoaki TaniTakumi SugayaTakao Rokutan
    • Mitsuo OshibaTakefumi SakuradaNaoaki TaniTakumi SugayaTakao Rokutan
    • G11B7/0033G11B7/14G11B27/10G11B27/30G11B17/22
    • G11B7/0033G11B27/102G11B27/3027G11B7/14
    • 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.
    • 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。
    • 6. 发明授权
    • Optical information recording/reproducing device capable of recording
information on a moving medium and reproducing information by using
reproducing light beams
    • 能够在移动介质上记录信息并通过使用再现光束再现信息的光信息记录/再现装置
    • US5400308A
    • 1995-03-21
    • US107171
    • 1993-08-17
    • Takumi SugayaTakao RokutanMitsuo OshibaTakefumi SakuradaNaoaki Tani
    • Takumi SugayaTakao RokutanMitsuo OshibaTakefumi SakuradaNaoaki Tani
    • G11B7/00G11B7/0033G11B7/004G11B7/0045G11B7/135G11B13/00
    • G11B7/004G11B7/0033
    • 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.
    • 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。
    • 8. 发明授权
    • Optical information recording/regenerating apparatus and track scanning
method for an optical information recording/regenerating apparatus
    • 用于光学信息记录/再生设备的光学信息记录/再生设备和轨迹扫描方法
    • US5398225A
    • 1995-03-14
    • US103101
    • 1993-08-09
    • Takumi SugayaTakao RokutanMitsuo OshibaTakefumi SakuradaNaoaki Tani
    • Takumi SugayaTakao RokutanMitsuo OshibaTakefumi SakuradaNaoaki Tani
    • G11B7/00G11B7/004G11B7/0045G11B7/085G11B7/14G11B20/18
    • G11B7/14G11B20/1833
    • 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.
    • 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。
    • 9. 发明授权
    • Optical information recording reproducing apparatus for recording and
reproducing information on a record medium and for generating track
error signals
    • 光信息记录重放装置,用于在记录介质上记录和再现信息并产生磁道误差信号
    • US5257249A
    • 1993-10-26
    • US857239
    • 1992-03-25
    • Takao Rokutan
    • Takao Rokutan
    • G11B7/00G11B7/0033G11B7/005G11B7/09G11B7/13G11B27/10G06K7/10
    • G11B7/131G11B27/102G11B7/0033G11B7/0945G11B7/0946G11B7/0948
    • An optical information recording/reproducing apparatus performs at least one of recording and reproducing of information by applying an optical spot to a record medium having a plurality of guide tracks and a plurality of information tracks. The apparatus has an optical detection device disposed at a position to which an imaging spot of a light reflected from the record medium is applied and having a plurality of optical detection portions arranged in a line in the direction intersecting at substantially right angles an image of at least one guide track so as to detect the light reflected from the optical detection portions and output a signal, an address position specifying circuit for specifying the address positions of a plurality of optical detection portions for scanning the optical detection device, a detector output selecting circuit for selecting the output of a plurality of optical detection portions in accordance with the output from the address position specifying circuit, a detection region setting circuit for setting a guide track detection region having a predetermined width for detecting a guide track, a track position detection circuit for detecting the address positions of optical detection portions corresponding to at least one guide track on the basis of the output from the detector output selecting circuit and the detection region setting circuit, and a track error generating circuit for generating a track error signal on the basis of the output from the track position detection circuit.
    • 光信息记录/再现装置通过将光点应用于具有多个导轨和多个信息轨道的记录介质来执行信息的记录和再现中的至少一个。 该装置具有光学检测装置,该光学检测装置设置在从记录介质反射的光的成像光点被施加到的位置处,并且具有多个光学检测部分,该光学检测部分沿与图像大致垂直的方向排列成一行 至少一个引导轨道,以检测从光学检测部分反射的光并输出信号;地址位置确定电路,用于指定用于扫描光学检测装置的多个光学检测部分的地址位置;检测器输出选择电路 用于根据地址位置指定电路的输出来选择多个光学检测部分的输出;检测区域设置电路,用于设置具有用于检测导轨的预定宽度的导轨检测区域,轨道位置检测电路 用于检测光学检测部分的地址位置 基于来自检测器输出选择电路和检测区域设定电路的输出,至少一个引导轨迹;以及轨道误差发生电路,用于根据轨道位置检测电路的输出产生轨道误差信号 。
    • 10. 发明授权
    • Optical card recording/reproducing apparatus
    • 光卡记录/重放装置
    • US5157644A
    • 1992-10-20
    • US702779
    • 1991-05-17
    • Takao Rokutan
    • Takao Rokutan
    • G11B7/0033G11B7/085G11B7/09
    • G11B7/0908G11B7/0033G11B7/08511G11B7/0917G11B7/0945G11B2007/0924
    • An optical card recording/reproducing apparatus includes a holding member for holding a recording medium inserted to perform data recording/reproducing. An optical head includes a converging lens for converging a light beam for recording/reproducing on the recording medium. A position control section moves the holding member and optical head by a predetermined distance to conform the converging position of the converging lens to the position of the recording medium close to the holding member. A focus search circuit searches a focal point by changing the distance between the converging lens and recording medium at the position close to the holding member, and outputs an in-focus detection signal. A focus control section controls the distance between the converging lens and recording medium to maintain a focal relationship between the converging lens and recording medium in response to the in-focus detection signal output from the focus search circuit.
    • 一种光卡记录/重放装置,包括用于保持插入以执行数据记录/再现的记录介质的保持构件。 光头包括用于会聚用于记录/再现的光束的会聚透镜。 位置控制部使保持构件和光学头移动预定距离,以使会聚透镜的会聚位置与记录介质靠近保持构件的位置一致。 焦点搜索电路通过在靠近保持部件的位置改变会聚透镜与记录介质之间的距离来搜索焦点,并输出对焦检测信号。 聚焦控制部分控制会聚透镜和记录介质之间的距离,以响应于从聚焦搜索电路输出的对焦检测信号来保持会聚透镜和记录介质之间的焦点关系。