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    • 2. 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。
    • 3. 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。
    • 5. 发明授权
    • Optical recording medium reproducing apparatus using edge detecting
technique
    • 使用边缘检测技术的光记录介质再现装置
    • US5726966A
    • 1998-03-10
    • US755977
    • 1996-11-25
    • Takumi Sugaya
    • Takumi Sugaya
    • G06K7/00G11B7/00G11B7/0033G11B7/005G11B20/14
    • G11B7/005G11B7/0033
    • A demodulation device for use with an optical recording medium comprises an edge detector for detecting edges of a binary signal corresponding to marks written onto the optical recording medium as information, an edge interval measuring circuit for measuring a value for the interval between two successive edges detected by the edge detector, a storage device for storing a table that relates thresholds representing upper and lower limits on at least one of a length of the mark and an interval between the marks to demodulated bit strings, and a data converter for comparing an edge interval value obtained by the edge interval measuring circuit with the thresholds representing upper and lower limits to thereby determine one of corresponding a length of the mark and an interval between marks and obtain a demodulated bit string corresponding to the edge interval value measured from the table.
    • 用于光记录介质的解调装置包括边缘检测器,用于检测对应于写在光记录介质上的标记的二进制信号的边缘作为信息;边缘区间测量电路,用于测量检测到的两个连续边缘之间的间隔值 通过边缘检测器存储一个存储装置,用于存储与标记的长度和标记之间的间隔中的至少之一相对应的代表上限和下限的阈值到解调比特串的表,以及数据转换器,用于将边缘间隔 由阈值表示上限和下限的边缘间隔测量电路获得的值,从而确定标记的长度和标记之间的间隔中的一个,并获得与从表中测量的边缘间隔值相对应的解调位串。
    • 7. 发明申请
    • Tape reproducing apparatus
    • 磁带重放装置
    • US20060039672A1
    • 2006-02-23
    • US11194535
    • 2005-08-02
    • Masaki YamadaTakumi Sugaya
    • Masaki YamadaTakumi Sugaya
    • H04N5/76
    • H04N5/9206H04N5/9205H04N5/926H04N5/945
    • A tape reproducing apparatus has an arrangement in which if a read error occurs when a magnetic tape in which meta-data, still picture data and moving picture data are recorded is read and the kind of data such as meta-data, still picture data and moving picture is judged (steps ST14, ST19 and ST23) based on the searched state or the continuously reproducing state, whereby it is determined (steps ST11, ST16, ST20 and ST25) that retrying is made if the retrying number is less than the predetermined retrying upper limit number set in each of kind of data and that retrying is not made if the retrying number is greater than the predetermined retrying upper limit number.
    • 磁带重放装置具有这样一种布置,其中如果在读取其中记录了元数据,静止图像数据和运动图像数据的磁带时发生读取错误,并且读取诸如元数据,静止图像数据和 基于搜索状态或连续再现状态来判断运动图像(步骤ST14,ST19和ST23),由此确定(步骤ST11,ST16,ST20和ST25),如果 重试次数小于在每种类型的数据中设置的预定重试上限号码,并且如果重试次数大于预定重试上限号码,则不进行重试。
    • 8. 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。