Method and circuit for correcting a record timing

Details Method and circuit for correcting a record timing Method and circuit for correcting a record timing

1983-10-14

1986-08-05

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

375 34, G11B 509, H04B 110, H04B 1404

Patent

active

046046607

ABSTRACT:
Phenomena of shifting of magnetization reversal points called a pattern peak shift and a stream shift which occur when digital data consisting of "0" bits and "1" bits recorded on a record medium at a high density is reproduced are resolved by discriminating whether the digital data to be recorded includes a bit pattern which causes those shifts or not, and for the digital data which may cause such shifts, recording the data at a timing such that the shifts are cancelled when the data is reproduced. Thus, the digital data recorded at the high density through a narrow discrimination window can be precisely reproduced.

REFERENCES:
patent: 4245263 (1981-01-01), Rathbun et al.
patent: 4343023 (1982-08-01), Nishimura et al.

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