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    • 2. 发明授权
    • Information recording/reproducing unit and information recording/reproducing data
    • 信息记录/再现单元和信息记录/再现数据介质
    • US06223302B1
    • 2001-04-24
    • US09011878
    • 1998-02-18
    • Yoshimitsu NakamuraYukinori Okazaki
    • Yoshimitsu NakamuraYukinori Okazaki
    • G06F1100
    • G11B20/1883G11B2220/20
    • An information recording/reproducing device and a medium are improved in reliability by making medium managing information usable even when a defective sector exists in the medium managing information area of the medium. The identifier of medium managing information, the information about the position where the medium managing information is recorded which is the information about the position of the sector in use, or the information about the position where a defect exists in the medium managing information area, which is the information about the position of the defective sector, are read from the medium managing area of the medium (3) and all the information is stored in a RAM (8) by using a medium managing information position manager. A reproducer and a recorder are controlled based on the information. Therefore, the medium managing information is correctly recorded and the reliability of the data of the information recording/reproducing device and the medium is improved, because the medium managing information is not recorded in the defective section.
    • 即使在介质的介质管理信息区域中存在缺陷扇区,也可以通过使介质管理信息可用来提高信息记录/再现设备和介质的可靠性。 介质管理信息的标识符,关于记录介质管理信息的位置的信息,其是关于所使用的扇区的位置的信息或关于在介质管理信息区域中存在缺陷的位置的信息,其中 是关于缺陷扇区的位置的信息,从介质(3)的介质管理区域读取,并且所有信息通过使用介质管理信息位置管理器存储在RAM(8)中。 基于该信息控制再现器和记录器。 因此,介质管理信息被正确记录,并且由于介质管理信息没有记录在缺陷部分中,信息记录/再现装置和介质的数据的可靠性得到改善。
    • 5. 发明授权
    • Magneto-optic disk apparatus
    • 磁光盘装置
    • US5420835A
    • 1995-05-30
    • US888547
    • 1992-05-22
    • Toshiya AkagiYukinori Okazaki
    • Toshiya AkagiYukinori Okazaki
    • G11B11/10G11B11/105G11B7/00
    • G11B11/10595G11B11/10515
    • In an magneto-optic disk apparatus which carries out recording, playback, or erasing of data with a single laser beam, recorded data is read simultaneously with a recording or erasing operation to eliminate the time of waiting for the disk to make a turn. A signal separation circuit 7 is provided for a magneto-optic disk apparatus which carries out recording, playback, erasing of data by applying a laser beam through an optical head 2 to a spot on a magneto-optic disk 3. In a recording or erasing operation, a magneto-optic playback signal 6 obtained from reflected light of a recording or erasing beam is input to the signal separation circuit 7 to separate and output the recorded data signal 8 contained in the magneto-optic playback signal 6 to consequently reading a recorded data signal 10 simultaneously with carrying out a recording or erasing operation.
    • 在利用单个激光束执行数据的记录,重放或擦除的磁光盘装置中,记录数据与记录或擦除操作同时被读取,以消除等待盘转动的时间。 信号分离电路7被提供用于通过将激光束通过光学头2施加到磁光盘3上的点来进行数据的记录,重放,擦除的磁光盘装置。在记录或擦除 将从记录或擦除光束的反射光获得的磁光回放信号6输入到信号分离电路7,以分离并输出包含在磁光再现信号6中的记录数据信号8,从而读取记录 数据信号10同时执行记录或擦除操作。
    • 8. 发明授权
    • Disk information reading control apparatus having a variable read
transfer speed and a disk information reading control method
    • 具有可变读取传送速度的盘信息读取控制装置和盘信息读取控制方法
    • US5808995A
    • 1998-09-15
    • US794268
    • 1997-01-31
    • Nobuyuki NakamuraYukinori OkazakiMakoto Usui
    • Nobuyuki NakamuraYukinori OkazakiMakoto Usui
    • G11B20/10G11B7/0037G11B7/005G11B7/013G11B19/28G11B7/00
    • G11B7/0037G11B19/28G11B7/005G11B7/013
    • A disk nearly constant in recording density from the outer circumference to the inner circumference of the disk, such as CLV and M-CAV format, is rotated at a constant angular velocity to read out information, and the information being read in at a varying read transfer speed depending on the position on the disk from the optical pickup is stored once in a buffer memory. The information stored in the buffer memory is sent out at a constant send transfer speed. When reproducing from a disk-shaped recording medium nearly constant in recording density in the inner and outer circumference, the disk information is read at a constant rotating angular velocity, and the information varying in read transfer speed depending on the disk position is outputted at a constant send transfer speed suited to the reproduction of information such as voice and picture. The host computer or the like for controlling the apparatus is not required to distinguish the type of medium or recording format, or perform processing such as control of the transfer speed. Furthermore, when outputting the stored information, means for setting the send transfer speed by an external device or switch inside the apparatus is provided. By this means, the information can be reproduced at a transfer speed suited to the content of the information being handled.
    • 从CLF和M-CAV格式的盘的外周到内周的记录密度几乎恒定的盘以恒定的角速度旋转以读出信息,并且以变化的读取读入信息 从光拾取器的盘上的位置的传送速度存储在缓冲存储器中。 存储在缓冲存储器中的信息以恒定的发送传送速度被发送出去。 当从内周和外周的记录密度几乎恒定的盘形记录介质再现时,以恒定的旋转角速度读取盘信息,并且以一个盘位置的读传送速度变化的信息在 恒定的发送传输速度适合于再现信息,如语音和图像。 用于控制设备的主机等不需要区分介质的类型或记录格式,或者执行诸如传送速度的控制的处理。 此外,当输出存储的信息时,提供用于通过设备内的外部设备或开关设置发送传送速度的装置。 通过这种方式,可以以适合正在处理的信息的内容的传送速度再现信息。
    • 9. 发明授权
    • Optical disk data recording and reproduction with opposed polarity in
adjacent tracks
    • 在相邻轨道中具有相反极性的光盘数据记录和再现
    • US5757759A
    • 1998-05-26
    • US719570
    • 1996-09-25
    • Toshihiko TakahashiYukinori Okazaki
    • Toshihiko TakahashiYukinori Okazaki
    • G11B7/0045G11B7/005G11B7/007G11B20/10G11B7/00
    • G11B7/00745G11B7/0045G11B7/005G11B7/00718G11B20/10009
    • An information recording apparatus includes a laser source emitting a laser beam for reproducing or recording data pits on a recording medium; an objective lens; a photodetector; an analog signal processing means performing amplification and waveform shaping for an electric signal output from the photodetector; a land/groove detecting means and outputting a polarity switch instruction signal; a reproduction signal polarity switch means for changing the signal polarity at reproduction in response to the polarity switch instruction signal from the land/groove detecting means; a controller for controlling the information recording apparatus at the request of a host computer performing control and process as a whole; a recording pulse modulating means for modulating a recording pulse on the instruction from the controller; a polarity switch means for changing the polarity of an output from the recording pulse modulating means; a recording signal polarity switch means for changing the signal polarity at recording in response to the polarity switch instruction signal from the land/groove detecting means by selecting one of an output from the polarity switch means and an output from the recording pulse modulating means, and outputting a recording data signal; and a laser driving means for controlling the laser source in response to the recording data signal from the recording signal polarity switch means, whereby the recording polarity of the data pits is switch between adjacent tracks on the recording medium, resulting in recording and reproduction of signals which are hardly affected by crosstalk between the adjacent tracks.
    • 信息记录装置包括:激光源,其发射用于在记录介质上再现或记录数据凹坑的激光束; 物镜; 光检测器; 模拟信号处理装置对从光电检测器输出的电信号进行放大和波形整形; 一个平台/凹槽检测装置,并输出极性开关指令信号; 再现信号极性切换装置,用于响应于来自焊盘/凹槽检测装置的极性切换指令信号改变再现时的信号极性; 控制器,用于在主机执行整体控制和处理的请求下控制信息记录装置; 记录脉冲调制装置,用于根据来自控制器的指令调制记录脉冲; 用于改变记录脉冲调制装置的输出极性的极性开关装置; 记录信号极性切换装置,用于通过选择来自极性开关装置的输出和记录脉冲调制装置的输出中的一个,响应于来自焊盘/沟槽检测装置的极性切换指令信号来改变记录时的信号极性,以及 输出记录数据信号; 以及激光驱动装置,用于响应于来自记录信号极性开关装置的记录数据信号来控制激光源,由此数据凹坑的记录极性在记录介质上的相邻轨道之间切换,导致信号的记录和再现 这几乎不受相邻轨道之间的串扰的影响。
    • 10. 发明授权
    • Magneto-optic memory device for overwriting information on magneto-optic
recording medium by using a pair of light spots without using an
external magnetic field
    • 磁光存储器件,用于通过在不使用外部磁场的情况下使用一对光点覆盖磁光记录介质上的信息
    • US5357493A
    • 1994-10-18
    • US933771
    • 1992-08-24
    • Yukinori OkazakiMieko Kobukata
    • Yukinori OkazakiMieko Kobukata
    • G11B11/105G11B13/04
    • G11B11/10519G11B11/10536
    • In a magneto-optic memory device for recording information on a magneto-optic recording medium having a magneto-optic recording film irradiated by a first small diameter light spot and a second larger diameter light spot which is substantially concentric with the first light spot, the temperature of a portion of the recording film around a recording position is changed by the irradiation of the second light spot in accordance with an information signal to be recorded, between a temperature, which is lower than a compensation temperature of the recording film and produces spontaneous magnetization of the recording film having intensity necessary for recording information, and a temperature which is higher than the compensation temperature of the recording film and produces spontaneous magnetization of the recording film having intensity necessary for recording information, and the intensity of the first light spot is increased to raise the temperature of the recording position of the recording film so as to reach near the Curie temperature of the recording film, thereby erasing old information and recording new information at the same time.
    • 在用于在具有由第一小直径光点照射的磁光记录膜和与第一光斑基本同心的第二较大直径光点的磁光记录介质上记录信息的磁光存储器件中, 记录膜周围记录位置的一部分的温度根据要记录的信息信号在第二光点的照射之间在低于记录膜的补偿温度的温度之间改变,并产生自发的 具有记录信息所需的强度的记录膜的磁化和高于记录膜的补偿温度的温度,并且产生具有记录信息所需的强度的记录膜的自发磁化,并且第一光点的强度是 增加以提高记录位置的温度 以便达到接近记录膜的居里温度,从而同时擦除旧信息并记录新信息。