Precedent and subsequent minor transitions to alleviate pulse cr

Details Precedent and subsequent minor transitions to alleviate pulse cr Precedent and subsequent minor transitions to alleviate pulse cr

1978-04-03

1979-09-11

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

G11B 509

Patent

active

041677617

ABSTRACT:
In a magnetic recording system having a medium for storing information in the form of encoded digital data, an improvement in the recording head control circuit including means and a method for determining the temporal occurrence of a major write transition of the encoded digital data and producing a minor write pre-transition and a minor write post-transition each having a lower amplitude and an opposite direction to that of the major write transition thereby providing a readout pulse corresponding to the combined write transitions having a narrower pulse width and improved symmetry which enhances the accuracy in reading out the recorded digital data and increases the packing density in the storage medium of the recording system.

REFERENCES:
patent: 3503059 (1970-03-01), Ambrico
patent: 3665485 (1972-05-01), Pear, Jr.
patent: 3869714 (1975-03-01), Schneider et al.

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