Optical disc having oscillating lands and grooves
    2.
    发明公开
    Optical disc having oscillating lands and grooves 失效
    Optische Platte mit ozillierenden Stegen und Rillen

    公开(公告)号:EP0973158A3

    公开(公告)日:2000-02-02

    申请号:EP99119782.3

    申请日:1997-10-24

    IPC分类号: G11B7/007

    摘要: In an optical disc, an ID field contains a plurality of address information, and is preliminarily recorded in convex and concave signals, and is composed of two sets offset by about 1/2 track pitch toward the internal or external track direction adjacent to the guide track, an information recording field is composed of grooves and lands oscillating at a single frequency in the radial direction, and the grooves and lands alternate in every revolution of the guide track. When w bits of information are included in one period of oscillation, an information unrecorded field between the ID field and information recording field is arranged to have a length of w/10 bits or more and/or w bits or less, and therefore, when recording continuous information data such as video data, it is possible to record continuously by generating a clock securely from the oscillating signal, and moreover, the format efficiency is improved, so that a format of a larger capacity is achieved.

    摘要翻译: 在光盘中,ID字段包含多个地址信息,并且被预先记录在凸和凹信号中,并且由相邻于引导件的内部或外部轨道方向偏移约1/2道距的两组组成 轨道,信息记录场由在径向上以单个频率振荡的凹槽和平台组成,并且凹槽和平台在导轨的每转一圈中交替。 当信息的w位被包括在一个振荡周期中时,ID字段和信息记录字段之间的信息未记录字段被布置为具有w / 10位或更多个和/或w位或更少的长度,因此当 记录诸如视频数据的连续信息数据,可以通过从振荡信号安全地产生时钟来连续记录,此外,提高格式效率,从而实现更大容量的格式。

    Code conversion method and apparatus, code recording medium, code recording apparatus and code reproducing apparatus
    4.
    发明公开
    Code conversion method and apparatus, code recording medium, code recording apparatus and code reproducing apparatus 失效
    Kodeumsetzungsverfahren und -vorrichtung,Kodeaufzeichnungsmedium,Kodeaufzeichnungsvorrichtung und Kodewiedergabevorrichtung

    公开(公告)号:EP0822555A2

    公开(公告)日:1998-02-04

    申请号:EP97113214.7

    申请日:1997-07-31

    IPC分类号: G11B20/14 H03M5/14

    摘要: The code conversion method of the present invention includes the steps of: scrambling an input main data unit based on any of plural types of pseudo-random number sequences; modulating the scrambled main data unit based on any of plural types of modulation data; producing an output main data unit from the modulated main data unit; obtaining a calculated value representing a difference between a number of 0 bits and a number of 1 bits included in the output main data unit; and selecting any of the modulation data dependent upon the calculated value. The code conversion method of the present invention is characterized by further including the steps of: determining whether or not a variation of the calculated value has exceeded a predetermined threshold value; newly selecting another pseudo-random number sequence used for the step of scrambling if it is determined that the variation of the calculated value has exceeded the predetermined threshold value; and re-scrambling the input main data unit based on the newly selected pseudo-random number sequence.

    摘要翻译: 本发明的代码转换方法包括以下步骤:基于多种类型的伪随机数序列中的任何一种对输入主数据单元进行加扰; 基于多种类型的调制数据中的任何一种调制加扰的主数据单元; 从调制的主数据单元产生输出主数据单元; 获得表示输出主数据单元中包括的0位和1位数之间的差的计算值; 以及根据所计算的值选择任何调制数据。 本发明的代码转换方法的特征在于还包括以下步骤:确定计算值的变化是否超过预定阈值; 如果确定计算值的变化已经超过预定阈值,则新选择用于加扰步骤的另一伪随机数序列; 并且基于新选择的伪随机数序列重新加扰输入主数据单元。

    Code conversion method and apparatus, code recording medium, code recording apparatus and code reproducing apparatus

    公开(公告)号:EP1335371A1

    公开(公告)日:2003-08-13

    申请号:EP03010315.4

    申请日:1997-07-31

    IPC分类号: G11B20/14 H03M5/14

    摘要: The code conversion method of the present invention includes the steps of: scrambling an input main data unit based on any of plural types of pseudo-random number sequences; modulating the scrambled main data unit based on any of plural types of modulation data; producing an output main data unit from the modulated main data unit; obtaining a calculated value representing a difference between a number of 0 bits and a number of 1 bits included in the output main data unit; and selecting any of the modulation data dependent upon the calculated value. The code conversion method of the present invention is characterized by further including the steps of: determining whether or not a variation of the calculated value has exceeded a predetermined threshold value; newly selecting another pseudo-random number sequence used for the step of scrambling if it is determined that the variation of the calculated value has exceeded the predetermined threshold value; and re-scrambling the input main data unit based on the newly selected pseudo-random number sequence.

    Optical disc having oscillating lands and grooves
    8.
    发明公开
    Optical disc having oscillating lands and grooves 失效
    具有振荡台和凹槽的光盘

    公开(公告)号:EP0973156A3

    公开(公告)日:2000-02-02

    申请号:EP99119777.3

    申请日:1997-10-24

    IPC分类号: G11B7/007

    摘要: In an optical disc, an ID field contains a plurality of address information, and is preliminarily recorded in convex and concave signals, and is composed of two sets offset by about 1/2 track pitch toward the internal or external track direction adjacent to the guide track, an information recording field is composed of grooves and lands oscillating at a single frequency in the radial direction, and the grooves and lands alternate in every revolution of the guide track. When w bits of information are included in one period of oscillation, an information unrecorded field between the ID field and information recording field is arranged to have a length of w/10 bits or more and/or w bits or less, and therefore, when recording continuous information data such as video data, it is possible to record continuously by generating a clock securely from the oscillating signal, and moreover, the format efficiency is improved, so that a format of a larger capacity is achieved.

    摘要翻译: 在光盘中,ID字段包含多个地址信息,并且预先记录在凸和凹信号中,并且由两组偏移大约1/2轨道间距朝向邻近导向件的内部或外部轨道方向 信息记录场由在径向上以单一频率振荡的凹槽和平台组成,并且凹槽和平台在导轨的每次旋转中交替。 当在一个振荡周期中包括w位信息时,ID字段和信息记录字段之间的信息未记录字段被布置为具有w / 10位或更多和/或w位或更少的长度,因此,当 记录诸如视频数据的连续信息数据,可以通过从振荡信号安全地产生时钟来连续地进行记录,此外,可以提高格式效率,从而实现更大容量的格式。