Method for driving magnetic head and driving circuit of...

Details Method for driving magnetic head and driving circuit of... Method for driving magnetic head and driving circuit of...

2005-02-15

2005-02-15

Neyzari, Ali (Department: 2655)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S013280

Reexamination Certificate

active

06856582

ABSTRACT:
A driving circuit for a magnetic head that is used for modulating magnetic field in a magneto-optical disk drive is provided, which reduces power consumption even if the magnetic head has large inductance. The driving circuit comprises a switching circuit for generating pulse-like drive current in synchronization with a timing for applying a pulse of light in accordance with a space between pits to be recorded on a magneto-optical disk, and a conversion circuit for converting the pulse-like drive current into sine-wave current to be supplied to the magnetic head such that the maximum magnetic field can be obtained at the timing for applying a pulse of light.

REFERENCES:
patent: 5060208 (1991-10-01), Nagai et al.
patent: 6628574 (2003-09-01), Shimazaki et al.
patent: 54-025715 (1979-02-01), None
patent: 11250518 (1999-09-01), None
patent: 11306613 (1999-11-01), None

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