Method and arrangement for the recording and playback of data

Details Method and arrangement for the recording and playback of data Method and arrangement for the recording and playback of data

1986-09-18

1989-09-26

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

360 46, G11B 509

Patent

active

048705136

ABSTRACT:
For the purpose of increasing storage density of data recorded on a magnetic recording medium, particularly on a magnetic tape, a coder stage is supplied with data signals allocated to the record data and with high-frequency magnetization signals. The coder stage generates write signals which are recorded with the magnetization signals. The pulse duration or the pulse pause of the respectively existing magnetization signal is lengthened given every change of the data signals. The magnetization signals and the data signals are preferably synchronized with one another such that the polarity of the magnetization of the recording medium changes at every change of the data signals. In the playback of the data, the peak values of the magnetization have zero axis crossings of the read output signals allocated to them. At the zero axis crossings, a detector stage generates data signals for a decoding of the recorded data.

REFERENCES:
patent: 3067422 (1962-12-01), Hunt
patent: 4633336 (1986-12-01), Horie et al.

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