Author :
Berman, David ; Biskeborn, Robert ; Bui, N. ; Childers, Ed ; Cideciyan, R.D. ; Dyer, W. ; Eleftheriou, Evangelos ; Hellman, Diana ; Hutchins, R. ; Imaino, Wayne ; Jaquette, Glen ; Jelitto, J. ; Jubert, P.-O. ; Lo, C. ; McClelland, G. ; Narayan, S. ; Oelce
Abstract :
We investigated the performance of a barium ferrite tape medium in linear tape recording, using a giant-magnetoresistive read head of 0.5 mum track width. A linear density of 400 kbpi with an error rate of 6 times 10-5 was demonstrated based on measured recording data and a simulated channel with advanced noise predictive maximum likelihood detection schemes. Using a timing-based servo format that reduces the position error signal (PES) due to medium jitter and servo-writer velocity variations, we achieved a PES of 0.07 mum standard deviation and a maximum PES (in a 10-s interval) of 0.35 mum. This PES magnitude allows the writing and reading of 1.5-mum tracks at 400 kbpi, for an equivalent areal density of 6.7 Gb/in2.
Keywords :
barium compounds; ferrites; giant magnetoresistance; magnetic recording; magnetic tapes; maximum likelihood detection; Ba-Fe-O; PES; advanced noise predictive maximum likelihood detection scheme; areal density; barium ferrite tape; giant magnetoresistive read head; linear tape recording; medium jitter velocity variation; position error signal; servo-writer velocity variation; timing-based servo format; Barium; Density measurement; Error analysis; Ferrites; Jitter; Magnetic heads; Maximum likelihood detection; Noise measurement; Predictive models; Servomechanisms; Magnetic recording; magnetic tape recording; signal detection; tracking;
