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    Optical device for the recording and reading of data media and optical memory system incorporating such a device
    5.
    发明授权
    Optical device for the recording and reading of data media and optical memory system incorporating such a device 失效
    用于记录和读取包含这种装置的数据媒体和光学存储器系统的光学装置

    公开(公告)号：US4387452A

    公开(公告)日：1983-06-07

    申请号：US226805

    申请日：1981-01-21

    申请人： Claude Bricot ,  Francois Le Carvennec ,  Pierre Lepetit

    发明人： Claude Bricot ,  Francois Le Carvennec ,  Pierre Lepetit

    IPC分类号： G11B7/085 ,  G11B7/08 ,  G11B7/12 ,  G11B7/14

    CPC分类号： G11B7/08 ,  G11B7/124

    摘要： The device makes it possible to optically inscribe and/or read at least two facing sides of disks in an optical memory system, whose disks are stacked. A linear motor displaces a mobile means incorporating recording-reading heads. These heads receive via a bidirectional optical connection data to be inscribed and coming from fixed light emitters-receivers. Each of the recording heads comprises two focusing lenses associated with one of the two facing sides of the disk. According to a first variant, the two sides can be read simultaneously, each of the lenses being associated with its own control device. In a second variant, a single control device is provided and the two focusing lenses are integral with one another, each side being read or inscribed in succession.

    摘要翻译： 该装置使得可以在光盘存储器系统中光盘上刻写和/或读取盘的至少两个相对侧，其中盘被堆叠。 线性电动机移动包括记录读取头的移动装置。 这些磁头通过双向光学连接数据接收来自固定发射器 - 接收器的数据。 每个记录头包括与盘的两个面对侧中的一个相关联的两个聚焦透镜。 根据第一变型，可以同时读取两侧，每个透镜与其自己的控制装置相关联。 在第二种变型中，提供单个控制装置，并且两个聚焦透镜彼此成一体，每一侧被连续读取或内接。

    Process for producing information carrying discs
    6.
    发明授权
    Process for producing information carrying discs 失效
    生产信息携带光盘的过程

    公开(公告)号：US4157931A

    公开(公告)日：1979-06-12

    申请号：US925881

    申请日：1978-07-18

    申请人： Claude Bricot ,  Francois Le Carvennec ,  Gerard Robin

    发明人： Claude Bricot ,  Francois Le Carvennec ,  Gerard Robin

    IPC分类号： B29C43/00 ,  B29C39/00 ,  B29C39/10 ,  B29C39/42 ,  B29C43/02 ,  B29C61/00 ,  B29D17/00 ,  G11B3/70 ,  G11B7/26 ,  B29C13/00 ,  B29C27/00

    CPC分类号： B29C43/02 ,  B29L2017/003

    摘要： The process according to the invention uses a matrix engraved by any means, the tracks being perfectly centered on this matrix in relation to a center of rotation. The matrix is placed in a vacuum chamber on a supporting axis capable of rotating and is coated over its entire surface with a polymerizable material which is free from air bubbles and which does not adhere to the constituent material of the matrix. A substrate previously drilled at its center, balanced and coated with a material to which the polymerizable material adheres, is placed on the supporting shaft and held at a distance from the matrix. The vacuum is established in the chamber and the substrate is brought into contact with the matrix. On completion of polymerization outside or inside the chamber, the substrate carrying the moulded resin is readily separated from the matrix.

    摘要翻译： 根据本发明的方法使用通过任何方式雕刻的矩阵，轨道相对于旋转中心完全居中在该矩阵上。 将基质放置在能够旋转的支撑轴上的真空室中，并且其整个表面上涂覆有不含气泡并且不粘附到基质的构成材料的可聚合材料。 预先在其中心钻出的基板平衡并涂覆有可聚合材料粘附的材料的基板被放置在支撑轴上并且与矩阵保持一定距离。 在室中建立真空并使基板与基体接触。 在室内或室内聚合完成后，承载模塑树脂的基材容易与基质分离。

    Process for the transmission of an audiofrequency analog signal during line-frame synchronization intervals of a television signal and apparatus for performing this process
    10.
    发明授权
    Process for the transmission of an audiofrequency analog signal during line-frame synchronization intervals of a television signal and apparatus for performing this process 失效
    用于在电视信号的线帧同步间隔期间传输音频模拟信号的过程以及用于执行该处理的装置

    公开(公告)号：US4253115A

    公开(公告)日：1981-02-24

    申请号：US80321

    申请日：1979-10-01

    申请人： Jean-Marc Kergosien ,  Francois Le Carvennec

    发明人： Jean-Marc Kergosien ,  Francois Le Carvennec

    IPC分类号： H04N5/928 ,  G11B20/12 ,  H03M13/00 ,  H04N7/085 ,  H04N7/10 ,  H04N7/04

    CPC分类号： H04N7/085

    摘要： The transmission process comprises a coding of the sound signal consisting of converting it into words of n bits at a frequency double the line frequency and during each synchronization pulse transmitting four words of n bits corresponding to different samples, which introduces a redundancy of two and a decorrelation between the different samples. The process involves a decoding operation consisting of comparing the two representations of the sample transmitted during the two synchronization pulses and selecting one representation for each sample as a function of the result of the comparison.

    摘要翻译： 传输过程包括声音信号的编码，其包括将频率转换成频率为线频率的频率的n位的字，并且在每个同步脉冲期间发送与不同采样相对应的n位的四个字，其中引入两个和 不同样品之间的相关性。 该过程包括解码操作，其包括比较在两个同步脉冲期间发送的样本的两个表示，并且根据比较结果为每个样本选择一个表示。