公开(公告)号：EP0151468A1

公开(公告)日：1985-08-14

申请号：EP85100992.8

申请日：1985-01-31

申请人： HITACHI, LTD.

发明人： Sato, Kazuhiro ,  Achiha, Masahiro ,  Nagahara, Shusaku

IPC分类号： G11B5/09

CPC分类号： G11B20/10

摘要： An analog signal is stored in an analog memory device (2), while lower bits of a digital signal obtained by digitizing the analog signal is stored in a digital memory device (4). An analog signal reproduced from the analog memory device (2) Is corrected on the basis of a digital signal reproduced from the digital memory device (4). The corrected reproduced signal is stored in the memory device again, whereby a recursive storage system is constructed. A minute signal component degraded by noise in the analog storage is corrected with the digital signal, with the result that storage end reproduction of favorable signal-to-noise ratio are realized.