发明名称 |
Tracking error detector with comparison of amplitude detected pilot signals leaking in from tracks adjacent to the target track |
摘要 |
A magnetic recording and reproducing apparatus includes: a recorder for recording information signals so as to form tracks obliquely on a magnetic tape, and for recording pilot signals so that the frequency may differ between different modes such as SP and LP; a reproducing head for reproducing recorded information; an error detecting circuit for comparing the level difference of pilot signals recorded in both tracks adjacent to the track to be scanned by there producing head and for outputting a tracking error signal; and a controller for controlling the feed of the magnetic tape so that the tracking error signal may be balanced. Preferably, in the LP mode, a pilot signal of a higher frequency than that used in the SP mode is recorded. In a tracking error detector for a magnetic recording and reproducing apparatus for detecting the pilot signal, the reproduced signals are sampled at a frequency at a common multiple of each pilot frequency, a pilot signal is detected, and a tracking error signal is output.
|
申请公布号 |
US5754356(A) |
申请公布日期 |
1998.05.19 |
申请号 |
US19960612816 |
申请日期 |
1996.03.22 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
HONJO, KENICHI;MARUOKA, TOSHIHIKO;ISAKA, HARUO;GOTOU, MAKOTO;ICHIKAWA, KEI;HASHIMOTO, KIYOKAZU;SHIMOTASHIRO, MASAFUMI |
分类号 |
G11B15/087;G11B15/18;G11B15/467;(IPC1-7):G11B5/02;G11B27/10 |
主分类号 |
G11B15/087 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|