Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1984-12-31
1986-12-30
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 78, G11B 500, G11B 2020, G11B 2108
Patent
active
046333436
ABSTRACT:
Data are written as transitions on plural tracks of a magnetic disc by a transducer which travels along an arcuate curve formed by an arm turning about an axis beyond the disc periphery. Transition positions are defined by the phase thereof relative to that of a reference indicator on a track of the disc. To align the transitions along a predetermined arcuate curve, a reference transition having a reference phase is written onto a given track. Other transitions of the second curve are written with a phase shift relative to the reference phase.
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IBM-TDB-Read/Write Magnetic Adjustment Method, vol. 20, No. 5, Oct. 1977, by Hart et al.
IBM-TDB Skew Detector and Detector and Corrector for a Disk, Drum or Tape Storage, Grimes, vol. 18, No. 1, Jun. '75.
Lequien Jean
Maury Christian
Pinson Denis
Canney Vincent P.
CII Honeywell Bull
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