Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility
Patent
1995-07-24
1999-01-05
Young, W. R.
Dynamic magnetic information storage or retrieval
Recording on or reproducing from an element of diverse utility
360 29, 396319, G11B 500, G11B 502
Patent
active
058568891
ABSTRACT:
A magnetic data recording apparatus magnetically records various items of data on a film in accordance with a feed of the film by a PPM Pulse Position Modulation (PPM) recording method. The apparatus includes a PPM signal converting circuit for converting the data to be recorded into a PPM signal and outputting the PPM signal, a magnetic head and a head driving circuit for driving the magnetic head on the PPM signal outputted from the PPM signal converting circuit. The apparatus further includes a data quantity calculating circuit for calculating a quantity of the data to be recorded during a feed of the film. The PPM signal converting circuit determines a change-of-signal position of the PPM signal within one period on the data quantity calculated by the data quantity calculating circuit.
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Hibino Hideo
Kazami Kazuyuki
Yamazaki Yoichi
Yokonuma Norikazu
Neal Regina Y.
Nikon Corporation
Young W. R.
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