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2. 发明公开

EP0814462A3 Signal recovery and error detection means for an information recording medium 失效
标题翻译：信息技术与信息信息 - Aufzeichnungsmedium
公开(公告)号：EP0814462A3
公开(公告)日：2000-03-29
申请号：EP97303477.0
申请日：1997-05-21
申请人： SONY CORPORATION
发明人： Komazaki, Takahiro , Tsutsui, Keiichi
IPC分类号： G11B7/00 , G11B7/085 , G11B7/09
CPC分类号： G11B7/0948 , G11B7/08541
摘要： When a signal is played back from a damaged portion of an optical disk, immediately after the reproduction of the signal from the damaged portion, a mirror signal can be obtained with a high degree of accuracy from conversion of a traverse signal into a binary signal. In a traverse-signal discriminating circuit, a traverse signal, a low-frequency component of a playback signal, is separated from the playback signal and then supplied to a hold circuit. In the hold circuit, the bottom of the traverse signal is held in order to produce a bottom hold signal. In a defect detecting circuit, in the meantime a defect in the playback signal, if any, is detected. If a defect is detected, the defect detecting circuit outputs a defect signal at an H level to a hold-voltage resetting circuit. The hold-voltage resetting circuit discharges a capacitor included in the hold circuit, halting the operation to hold the bottom of the traverse signal as long as the defect signal supplied thereto is set at the H level.
摘要翻译：当从损坏部分再现信号之后立即从光盘的损坏部分播放信号时，可以从横越信号转换为二进制信号中获得高精度的镜像信号。在横移信号识别电路中，重放信号的低频分量的横越信号与重放信号分离，然后提供给保持电路。在保持电路中，保持横越信号的底部以产生底部保持信号。在缺陷检测电路中，同时检测到重放信号中的缺陷（如果有的话）。如果检测到缺陷，则缺陷检测电路将H电平的缺陷信号输出到保持电压复位电路。保持电压复位电路放电包括在保持电路中的电容器，只要将提供的缺陷信号设置为H电平，就停止保持横越信号的底部的操作。

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