Method and apparatus for improving inter-block gap length tolera

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

360 50, 360 744, G11B 1548, G11B 509

Patent

active

054755425

ABSTRACT:
A method and apparatus for accurately locating targeted append points in a tape drive. The effects of interlayer slip (ILS) are eliminated and smaller IBGs are possible thus providing increased data capacity for a given tape cartridge. A coarse tachometer count is used in combination with the read dataflow to accurately locate the proper append point even with a small IBG size. The appended data are assured to be written using the proper tape velocity which virtually eliminates improper write appends and read temporary errors previously caused by ILS effects. The solution also guarantees that customer data previously written to the tape are not accidentally overwritten.

REFERENCES:
patent: 3274574 (1966-09-01), Miller et al.
patent: 3688274 (1972-08-01), Cormier et al.
patent: 3711691 (1973-01-01), Breitenbach et al.
patent: 4125881 (1978-11-01), Eige et al.
patent: 4176380 (1979-11-01), Koski et al.
patent: 4389600 (1983-06-01), Milligan et al.
patent: 4393445 (1983-07-01), Milligan et al.
patent: 4541027 (1985-09-01), Danielsen et al.
patent: 4570187 (1986-02-01), Lode
patent: 4633333 (1986-12-01), Blanco et al.
patent: 4692819 (1987-09-01), Steele
patent: 4737868 (1988-04-01), Kimura et al.
patent: 5117288 (1992-05-01), Eisenhardt et al.
patent: 5331479 (1994-07-01), Fry et al.
Brentenbach et al, "Testing IBG Detection", IBM Technical Disclosure Bulletin, vol. 12, #7, Dec. 1969.
P J Badum, "On the Fly Intorrocord Gap Formation" IBM Technical Disclosure Bulletin, vol. 11, #8, Jan. 1969.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for improving inter-block gap length tolera 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 improving inter-block gap length tolera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for improving inter-block gap length tolera will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1364658

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.