Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Patent
1995-03-10
1998-07-07
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
360 75, 360 7717, 369 4413, G11B 503
Patent
active
057778132
ABSTRACT:
A disk drive system having downward compatibility includes a read/write head and a feedback servo controller for reading and writing information to and from a removable disk cartridge. When writing information to the data tracks of magnetic medium of a lower-capacity disk cartridge, in which the data tracks are substantially wider than the width of the read/write head, the read/write head is operated in an erase mode for several resolutions prior to writing the data. The read/write head is first shifted off track center by a small DC offset, then operated in an erase mode while being guided in a repeating oscillating pattern under closed loop servo control. The read/write head is then shifted off track center in the other direction, then again operated in an erase mode while being guided in a repeating oscillating pattern under closed loop servo control. A higher capacity disk drive system can thereby read and write data to the removable disk cartridge such that data which it stores on a lower-capacity removable disk cartridge may be read by lower-capacity disk drive systems without sideband interference.
REFERENCES:
patent: 4853799 (1989-08-01), Aikawa
patent: 4862294 (1989-08-01), Mihara
patent: 4901169 (1990-02-01), Hamaoka
patent: 5050016 (1991-09-01), Squires
patent: 5142626 (1992-08-01), Arnold et al.
patent: 5155638 (1992-10-01), Aikawa et al.
patent: 5173816 (1992-12-01), Ogihara
patent: 5329510 (1994-07-01), Tsuyuguchi
patent: 5400201 (1995-03-01), Pederson
patent: 5523902 (1996-06-01), Pederson
Chang Chih-Hsiung
Herbst James A.
Kiadeh Mansur B.
Sun Kai C.K.
Faber Alan
Psitos Aristotelis M.
SyQuest Technology, Inc.
LandOfFree
Method and apparatus for reducing sideband interference when sto 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 reducing sideband interference when sto, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing sideband interference when sto will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1212592