High density digital data recording system

Details High density digital data recording system High density digital data recording system

1979-10-10

1986-02-11

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Inter-record gap processing

360 741, G11B 509, G11B 2102

Patent

active

045701890

ABSTRACT:
This invention relates to the recording and reproducing of digital data on magnetic tape and, more particularly, to increasing the effective data recording density via reducing the lengths of the interblock gaps. The tape is stopped and started with moderate accelerations, in distances which are generally greater than the interblock gap length. In a particular form of the invention, when the tape is to be stopped at the end of a data block, it is stopped in a distance greater than the gap length, reversed and brought to rest with the record/reproduce head on the interblock gap. When the tape is to be started, it is first reversed for a short distance, and then driven in the desired direction such that it is up to normal operating speed at the end of the interblock gap. The interblock gap length may be substantially shorter than the distance required to stop and start the tape. The effective data recording density is increased through this interblock gap length reduction.

REFERENCES:
patent: 3732380 (1973-05-01), Kimbell
patent: 3898691 (1975-08-01), Nakauchi et al.
patent: 4157571 (1979-06-01), Shu

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