Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1977-10-31
1979-04-10
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 75, 360 98, 360135, G11B 2110, G11B 5012
Patent
active
041492005
ABSTRACT:
Principal embodiment teaches method and apparatus for radial positioning of a magnetic recording transducer relative to the concentric tracks of a rotatable magnetic disk having work data and servo data interspersed in alternate sectors along each track. The servo data sectors comprise repeating groups of servo tracks used to provide coarse and fine radial positioning signals for the transducer relative to the work data tracks.
The servo system control hard-positioning carriage means [to seek target track and keep transducer gap "centered" during Reading and Writing operations] and also provides timing information (synchronized clock signals, timing-decode) determined by the drive, rather than external means. An "embedded" format, rather than "dedicated", is used for laying down the servo information.
REFERENCES:
patent: 3691543 (1972-09-01), Mueller
patent: 3812533 (1974-05-01), Kimura
patent: 3860861 (1975-01-01), Gucker
patent: 3959820 (1976-05-01), Braun
patent: 3994016 (1976-11-01), Moghadam
patent: 4027388 (1977-05-01), Kril
patent: 4032984 (1977-06-01), Kaser et al.
patent: 4068267 (1978-01-01), Inouye
IBM Tech. Disc. Bull., Lewkowicz et al., Tri-Bit Servo Detection, vol. 19, No. 3, Aug. 1976, pp. 810-813.
Burroughs Corporation
Cass Nathan
Eddleman Alfred H.
McCormack John J.
Peterson Kevin R.
LandOfFree
Transducer positioning system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transducer positioning system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transducer positioning system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1075154