Optical disk apparatus and optical head
    11.
    发明授权
    Optical disk apparatus and optical head 失效
    光盘装置和光头

    公开(公告)号:US5311494A

    公开(公告)日:1994-05-10

    申请号:US788242

    申请日:1991-11-05

    摘要: An overwritable optical disk apparatus in which a finite conjugate optical system is employed. The apparatus comprises an optical head for converging diffused light from a light source onto an optical disk for performing data write/read operation, a driving unit for rotating the disk and a beam splitter for guiding the light reflected from the optical disk to a photodetector for detecting light reflected from the optical disk. Influence of disk displacement occurring in accompanying the rotation of the disk and disk eccentricity are suppressed to a minimum by encasing rotatably the optical disk within a credit card size casing which is adapted to be loaded and held stationarily in the optical disk apparatus. Thin structure of the optical head and miniaturization of the optical disk apparatus are realized with light utilization efficiency for data write/read operation being increased.

    摘要翻译: 使用有限共轭光学系统的可重写光盘装置。 该装置包括用于将来自光源的漫射光会聚到用于执行数据写入/读取操作的光盘上的光学头,用于旋转盘的驱动单元和用于将从光盘反射的光引导到光电检测器的光束分离器 检测从光盘反射的光。 通过将光盘可旋转地封装在信用卡尺寸的壳体内,适用于光盘装置中的固定和固定,从而将伴随盘的旋转和盘偏心率的盘位移的影响抑制到最小。 通过提高数据写入/读取操作的光利用效率来实现光学头的薄型结构和光盘装置的小型化。

    Optical recording sheet and method and apparatus for reproducing the same
    12.
    发明授权
    Optical recording sheet and method and apparatus for reproducing the same 失效
    光记录纸及其再现方法和装置

    公开(公告)号:US5101096A

    公开(公告)日:1992-03-31

    申请号:US419727

    申请日:1989-10-11

    CPC分类号: G06K1/14

    摘要: An optical recording sheet includes a plurality of data columns consisting of optical recording dots arranged in a matrix shape and column markers corresponding to the data columns. The data columns and the column markers of the optical recording sheet are detected by an optical line sensor and stored in a memory. On the basis of information stored in the memory, a marker detector detects the column marker and then two memory coordinates having a position known relative to the column marker are calculated. From the two memory coordinates, an inclining angle detector calculates the inclining angle between the optical recording sheet and the optical line sensor. On the basis of the memory coordinates and the inclining angle, an address calculator restores the optical recording dots stored in the memory coordinates.

    摘要翻译: 光学记录纸包括由矩阵形状排列的光学记录点和对应于数据列的列标记组成的多个数据列。 光学记录纸的数据列和列标记由光线传感器检测并存储在存储器中。 基于存储在存储器中的信息,标记检测器检测列标记,然后计算具有相对于列标记已知的位置的两个存储器坐标。 从两个存储器坐标,倾斜角度检测器计算光学记录纸和光学线路传感器之间的倾斜角度。 基于记忆坐标和倾斜角度,地址计算器恢复存储在存储坐标中的光记录点。

    Optical recording method and apparatus using two fight spots
    15.
    发明授权
    Optical recording method and apparatus using two fight spots 失效
    光记录方法和装置使用两个战斗点

    公开(公告)号:US4841514A

    公开(公告)日:1989-06-20

    申请号:US919421

    申请日:1986-10-16

    CPC分类号: G11B7/006 G11B7/125

    摘要: A light spot determining a first condition that an optical recording medium is cooled after being heated to a temperature exceeding a first temperature and a light spot determining a second condition that the optical recording medium is cooled after being heated to a temperature exceeding a second temperature higher than the room temperature and not exceeding the first temperature higher than the second temperature, namely, the two light spots are radiated onto the optical recording medium and in the same guide track thereof wherein signals are recorded and erased on the optical recording medium by controlling the spot diameter of each light spot and/or the light intensity thereof.

    摘要翻译: 确定光学记录介质在被加热到超过第一温度的温度后被冷却的第一条件的光点和确定光学记录介质在被加热到超过第二温度的温度之后被冷却的第二条件的光点 比室温高并且不超过高于第二温度的第一温度,即,两个光点被辐射到光记录介质上,并且在相同的导轨中,其中通过控制光记录介质在光记录介质上记录和擦除信号 每个光点的光斑直径和/或其光强度。