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    • 1. 发明授权
    • Method of processing signals for optical disc device and optical disc device utilizing two split photo detectors
    • 用于光盘装置的信号处理方法和使用两个分裂光检测器的光盘装置
    • US06320831B1
    • 2001-11-20
    • US09341463
    • 1999-07-12
    • Takashi InoueKeiichi KamedaTatsuya SuzukiHideaki HatanakaMasaaki Takata
    • Takashi InoueKeiichi KamedaTatsuya SuzukiHideaki HatanakaMasaaki Takata
    • G11B700
    • G11B7/0903G11B7/24082G11B11/10565
    • An object of this invention is to provide a method for processing signals for an optical disc device and an optical disc device for immediately determining the on-track state of a main beam light impinging on an optical disc including land areas on which information is recorded, said optical disc being track-formatted to have a double spiral structure. In recording or reproducing information on or from the land areas while track-controlling a first reflected light (MB) based on a second reflect light (SB1) and a third reflect light (SB2), the phases of a sum signal (SUM) and a difference signal (DIFF) between a first push-pull signal (PP1) obtained from an output from a first split photo conductor (21) and a second push-pull signal (PP2) obtained from an output from a second split photo conductor (23) are compared to determine from the mutual phase relationship which land area is providing the first reflected light (MB).
    • 本发明的目的是提供一种用于处理用于光盘装置和光盘装置的信号的方法,用于立即确定入射在包括其上记录信息的陆地区域的光盘上的主光束的轨道状态, 所述光盘被跟踪格式化以具有双螺旋结构。 在基于第二反射光(SB1)和第三反射光(SB2)跟踪控制第一反射光(MB)的同时在陆地区域上或从陆地区域记录或再现信息时,和信号(SUM)和 从第一分离光导体(21)的输出获得的第一推挽信号(PP1)和从第二分离光导体的输出获得的第二推挽信号(PP2)之间的差分信号(DIFF) 23)进行比较,从相对相位关系确定哪个面积提供第一反射光(MB)。