Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1995-03-02
1997-02-25
Kim, W. C.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360113, 360 66, 360 7701, G11B 503, G11B 558, G11B 5596, G11B 5127
Patent
active
056064705
ABSTRACT:
When a magnetic recording and reproducing apparatus is in a waiting state, feedback control for positioning the carriage is released, and a supply of a sense current to the magnetoresistive effect element of the MR magnetic head is adjusted so as to prolong the life of the MR magnetic head. When the interface and control circuit recognizes that there is no order from the host computer and that the magnetic recording and reproducing apparatus is in a wait state, the servo control circuit releases the feedback control for positioning the head. A mode, etc. selection control circuit controls the recording/reproduction amplifier so as not to supply a sense current to the magnetoresistive effect element of the MR magnetic head. Accordingly, the time for supplying a sense current to the magnetoresistive effect element of the MR magnetic head is reduced in a great measure and, therefore, it is possible to prevent the deterioration of the element characteristics by electro-migration or the like. The result is that the life of the element can be prolonged. Hence, the output of the MR magnetic head can be increased without sacrificing the reliability. Accordingly, it has become possible to improve the performance of a high-output magnetic recording and reproducing apparatus using an MR magnetic head.
REFERENCES:
patent: 5345347 (1994-09-01), Hopkins et al.
patent: 5381279 (1995-01-01), Dunn
patent: 5408369 (1995-04-01), Miura et al.
patent: 5465183 (1995-11-01), Hattori
Hata Yuji
Shioya Akio
Hitachi , Ltd.
Kim W. C.
Neal Regina Y.
LandOfFree
Method and apparatus for controlling magnetoresistive effect ele does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling magnetoresistive effect ele, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling magnetoresistive effect ele will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1978431