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    Optical disc with a theft deterrent coating
    8.
    发明授权
    Optical disc with a theft deterrent coating 有权
    带有防盗涂层的光盘

    公开(公告)号：US08830806B2

    公开(公告)日：2014-09-09

    申请号：US12174841

    申请日：2008-07-17

    申请人： Wayne M. Smith ,  Christopher J. Cookson ,  Lewis S. Ostrover ,  Alan E. Bell

    发明人： Wayne M. Smith ,  Christopher J. Cookson ,  Lewis S. Ostrover ,  Alan E. Bell

    IPC分类号： G06F21/00 ,  G11B7/24 ,  G11B23/28 ,  G11B20/00

    CPC分类号： G11B7/24 ,  G11B20/00086 ,  G11B20/00608 ,  G11B20/00876 ,  G11B23/282 ,  G11B23/286

    摘要： An optical disc used for storing content includes a theft control area selected to render the disc unreadable. The disc must be exposed to radiation of a specific wavelength before it can be read by a regular device. The theft control area may include an area that contains data that instructs the device not to read the disc. This area includes a coating that changes its optical characteristics when exposed to the radiation. The material could be radiochromic or thermochromic. Alternatively, the theft control area includes an RFID device that includes an element that is radiation sensitive. In this embodiment, when the disc is irradiated, the element changes its electrical characteristics.

    摘要翻译： 用于存储内容的光盘包括被选择用于使盘不可读的盗窃控制区。 必须将光盘暴露于特定波长的辐射之前，才能通过常规设备读取。 盗窃控制区域可以包括包含指示设备不读取盘的数据的区域。 该区域包括当暴露于辐射时改变其光学特性的涂层。 该材料可以是放射性色素或热变色的。 或者，盗窃控制区域包括具有辐射敏感元件的RFID装置。 在本实施例中，当光盘被照射时，元件改变其电特性。

    Player with two read heads for double-sided optical discs
    9.
    发明授权
    Player with two read heads for double-sided optical discs 有权
    具有两个用于双面光盘的读取头的播放器

    公开(公告)号：US07151734B2

    公开(公告)日：2006-12-19

    申请号：US10716109

    申请日：2003-11-18

    申请人： Christopher J. Cookson ,  Lewis S. Ostrover

    发明人： Christopher J. Cookson ,  Lewis S. Ostrover

    IPC分类号： G11B7/00

    CPC分类号： G11B7/24038 ,  G11B7/14

    摘要： A double-sided optical disc, such as a DVD-18 disc, is formed with data tracks on each layer. The tracks on one side are oriented along one spiral while the tracks on the other side are oriented along a second spiral, the two spirals being oriented in opposite directions as viewed from the respective sides. A player with two laser read heads is provided for reading the disc. Each laser read head is disposed adjacent to a respective disc side. The data is read from the two sides, either in sequence from one side and then the other, simultaneously, or in some alternating fashion.

    摘要翻译： 诸如DVD-18光盘的双面光盘在每层上形成有数据轨迹。 一侧的轨道沿着一个螺旋线定向，而另一侧的轨道沿着第二螺旋方向定向，两个螺旋从相应的侧面看向相反的方向定向。 提供具有两个激光读取头的播放器用于读取光盘。 每个激光读头与相应的盘侧相邻设置。 从两侧依次读取数据，同时或以某种交替方式读取数据。