公开(公告)号：US5083303A

公开(公告)日：1992-01-21

申请号：US343654

申请日：1989-04-27

申请人： Tsuneo Yanagida ,  Motoo Azuma ,  Kenji Kikkawa

发明人： Tsuneo Yanagida ,  Motoo Azuma ,  Kenji Kikkawa

IPC分类号： G11B7/085 ,  G11B20/12 ,  G11B27/30

CPC分类号： G11B20/1217 ,  G11B27/3027 ,  G11B7/08505 ,  G11B2220/20 ,  G11B2220/2537

摘要： Based on an output signal of a sector mark reading circuit reading a sector mark signal representing a sector mark area, the interval in which the next sector mark signal is to be detected is anticipated, and a quasi-sector mark is generated at a time when the next sector mark is to be detected in each sector. Even if the sector mark reading fails, the sector mark will be able to be output at an accurate timing. Also, if the read sector mark signal, which is mis-detected or not, is determined, a highly reliable sector mark signal may be produced.

摘要翻译： 基于读取表示扇区标记区域的扇区标记信号的扇区标记读取电路的输出信号，预期下一个扇区标记信号将被检测的间隔，并且产生准扇区标记， 将在每个扇区中检测下一扇区标记。 即使扇区标记读取失败，扇区标记将能够以准确的时序输出。 此外，如果确定了未被检测到的读扇区标记信号，则可以产生高度可靠的扇区标记信号。