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    • 6. 发明授权
    • Optical disk and optical disk apparatus
    • 光盘和光盘设备
    • US06909681B2
    • 2005-06-21
    • US10132948
    • 2002-04-26
    • Masayoshi NagataYasuo ToneIkuhiro Hideta
    • Masayoshi NagataYasuo ToneIkuhiro Hideta
    • G11B7/005G11B7/007G11B11/105G11B20/10G11B20/12G11B20/14G11B27/19G11B27/24G11B27/30G11B7/00
    • G11B7/00745G11B7/00718G11B20/12G11B20/14G11B27/19G11B27/24G11B27/3027G11B2220/20
    • In an optical disk, address information, including an address information start mark, is recorded in a header region primarily based on variable-length codes such that, between each pair of nearest bits having a first logic value, at least two and at most seven bits having a second logic value are disposed. The address information start mark is detected based on a first criterion that a combination of pulse widths each defined in association with a nearest pair of bits having the first logic value is present in a pulse sequence, and also based on a second criterion that, when the logic level of the pulse sequence alternates between a first logic level and a second logic level in association with occurrence of bits having the first logic value intermittently disposed among bits having the second logic value, the logic levels of pulses in the pulse sequence coincide with their respective counterparts in the combination of pulse widths.
    • 在光盘中,包括地址信息开始标记的地址信息主要基于可变长度代码被记录在标题区域中,使得在具有第一逻辑值的至少两个和最多七个的每对最近位之间 设置具有第二逻辑值的位。 基于第一标准来检测地址信息开始标记,该标准与脉冲序列中存在具有第一逻辑值的最近一对位对相关联的脉冲宽度的组合,并且还基于第二标准, 脉冲序列的逻辑电平在第一逻辑电平和第二逻辑电平之间交替,与具有间歇地布置在具有第二逻辑值的位之间的具有第一逻辑值的位的发生相关联,脉冲序列中的脉冲的逻辑电平与 各自对应的脉冲宽度的组合。