Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1993-06-14
1995-02-28
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 53, 360 48, 360 7808, G11B 5584, G11B 509, G11B 5596
Patent
active
053942809
ABSTRACT:
A magnetic tape drive simultaneously senses on a magnetic tape three evenly spaced-apart servo track areas for servoing a multi-track magnetic head to follow a concurrent set of data tracks on the magnetic tape. The data tracks are arranged into a plurality of track groups. Each track group has a first and second subgroup of data tracks. The first subgroup of tracks are scanned in a first relative motion of the magnetic tape and magnetic head as a forward direction (tape is being spooled from a supply tape reel). The second subgroup of tracks are scanned in a second relative motion of the magnetic tape and magnetic head that is opposite in direction to the first relative direction and is a forward direction of scanning. While writing data in any one of the plural track groups, a servo dropout affecting most of the servo track areas is detected and indicated as a servo error. Writing is aborted. The relative position of the magnetic tape and head is detected at both longitudinal ends of the servo dropout. A servo dropout block (SDB), a tape control block, is written at each longitudinal end of the servo dropout only in the group of tracks in which data are being written. The tape space between the two SDBs is termed a limited portion of the tape in which no recording is permitted.
REFERENCES:
patent: 3997876 (1976-12-01), Frush
patent: 4214280 (1980-07-01), Halfhill et al.
patent: 5200864 (1993-04-01), Dunn et al.
patent: 5262908 (1993-11-01), Iwamatsu et al.
Chliwnyj Alex
Fry Scott M.
Graves David C.
Nylander-Hill Pamela R.
Torab Habib M.
International Business Machines - Corporation
Kapadia Varsha A.
Psitos Aristotelis
Schecter M. W.
Somermeyer H. F.
LandOfFree
Detecting a servo error on a magnetic tape and identifying exten does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detecting a servo error on a magnetic tape and identifying exten, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting a servo error on a magnetic tape and identifying exten will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-852430