Record carrier including a servo track having first and second modulated parts representing a data type and a word sync type, respectively, and an apparatus for scanning the record carrier
    58.
    发明申请
    Record carrier including a servo track having first and second modulated parts representing a data type and a word sync type, respectively, and an apparatus for scanning the record carrier 有权
    包括具有分别表示数据类型和字同步类型的第一和第二调制部分的伺服记录道的记录载体和用于扫描记录载体的装置

    公开(公告)号:US20050254409A1

    公开(公告)日:2005-11-17

    申请号:US11121752

    申请日:2005-05-04

    摘要: A record carrier has a servo track (4) indicating an information track (9) intended for recording information blocks. The servo track (4) has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encoding position information at regular intervals. The modulated parts start with a bit sync element and are of a data type having a data bit element, or of a word sync type having a word sync element. The word sync element and the data bit element are modulated according to a same predetermined type of modulation of the periodic variation. The effective strength of a modulated element is the number of periodic variations that are substantially different and available for detection of that element. The effective strength of the word sync element and of the data bit element are equal.

    摘要翻译: 记录载体具有指示用于记录信息块的信息轨道(9)的伺服轨道(4)。 伺服磁道(4)具有预定频率的物理参数的周期性变化,并且以规则的间隔对位置信息进行编码的调制部分。 调制部分以比特同步元素开始,并且是具有数据比特元素的数据类型或具有字同步元素的字同步类型。 字同步元件和数据位元素根据周期性变化的相同预定类型的调制进行调制。 调制元件的有效强度是实质上不同并且可用于检测该元件的周期性变化的数量。 字同步元件和数据位元素的有效强度相等。

    Optical disc medium, data recording method, and data recording apparatus
    59.
    发明申请
    Optical disc medium, data recording method, and data recording apparatus 失效
    光盘介质,数据记录方法和数据记录装置

    公开(公告)号:US20050036438A1

    公开(公告)日:2005-02-17

    申请号:US10487600

    申请日:2002-10-18

    摘要: An optical disc medium 10 having a wobbled track groove 12 includes three wobble patterns including a flat wobble pattern, a positive pulse wobble pattern, and a negative pulse wobble pattern. In the flat wobble pattern, the amplitude of the wobble from the lengthwise direction of the track groove is zero such that the track groove is flat. In the positive pulse wobble pattern, the amplitude of the wobble from the length-wise direction of the track groove is positive such that the track groove is wobbled in a first direction perpendicular to the length-wise direction. Further, in the negative pulse wobble pattern, the amplitude of the wobble from the lengthwise direction of the track groove is negative such that the track groove is wobbled in a second direction opposite to the first direction. Then, three data values can be recorded using three distinctive wobble patterns.

    摘要翻译: 具有摆动轨道槽12的光盘介质10包括三个摆动图案,包括平摆动图案,正脉冲摆动图案和负脉冲摆动图案。 在平坦摆动图案中,轨道槽的纵向的摆动幅度为零,使得轨道槽平坦。 在正脉冲摆动图案中,从轨道槽的长度方向的摆动的振幅为正,使得轨道槽在与长度方向垂直的第一方向上摆动。 此外,在负脉冲摆动图案中,从轨道槽的长度方向的摆动的振幅为负,使得轨道槽在与第一方向相反的第二方向上摆动。 然后,可以使用三种不同的摆动模式记录三个数据值。

    Information carrier comprising access information
    60.
    发明授权
    Information carrier comprising access information 有权
    信息载体包括访问信息

    公开(公告)号:US08718277B2

    公开(公告)日:2014-05-06

    申请号:US10545640

    申请日:2004-02-05

    IPC分类号: H04K1/10

    摘要: An information carrier for holding user information, the information carrier comprising access information in the form of access information bits for accessing the user information, the access information bits being stored on the information carrier in a variation of a parameter, which variation is detectable by integration detection. The access information bits are scrambled according to a pre-determined scrambling method. By scrambling the access information bits according to a pre-determined scrambling method, detection of the access information is not possible as long as the scrambling method is not known. Using the integration detection technique, the only way to obtain the access information is by knowing how the signal obtained after reading-out the area comprising the access information bits must be processed. In this way illegal retrieval of the user information is further prevented.

    摘要翻译: 一种用于保存用户信息的信息载体,所述信息载体包括用于访问用户信息的访问信息位形式的访问信息,访问信息位存储在信息载体上的参数变化中,所述变化可通过集成检测 检测。 访问信息比特根据预定的加扰方法进行加扰。 通过根据预定的加扰方法对访问信息比特进行加扰,只要加扰方法是未知的,则访问信息的检测是不可能的。 使用积分检测技术,获得访问信息的唯一方法是知道如何在读出包含访问信息位的区域之后获得的信号如何被处理。 以这种方式进一步防止用户信息的非法检索。