MAGNETO-OPTICAL RECORDING METHOD CAPABLE OF OVERWRITING AND MAGNETO-OPTICAL RECORDER AND RECORDING MEDIUM USED IN THE SAME

Title:

MAGNETO-OPTICAL RECORDING METHOD CAPABLE OF OVERWRITING AND MAGNETO-OPTICAL RECORDER AND RECORDING MEDIUM USED IN THE SAME

Document Type and Number:

Japanese Patent JPH06243533

Kind Code:

A

Abstract:

PURPOSE: To reduce the size of a recording and reproducing device, to carry out recording by modulating the output of semiconductor laser and to overwrite continuous information at a high transfer rate.

CONSTITUTION: Two light spots 5, 6 are projected from one object lens, the spot 5 is used for recording and the spot 6 for erasing. The intensity of the light spot 5 for recording is modulated to a binary code in accordance with information to be recorded and the direction of a magnetic field applied is changed over on the basis of magnetic field switching information recorded in a medium. At the time when the light spot 5 for recording passes through a part erased by the light spot 5 for erasing, a magnetic field is applied in a direction reverse to the direction of a magnetic field applied at the time when the light spot 6 for erasing passes.

Inventors:

MIYAMOTO MAKOTO
KUREBAYASHI MASAAKI
TOKUJIYUKU NOBUHIRO

Application Number:

JP2938693A

Publication Date:

September 02, 1994

Filing Date:

February 18, 1993

Export Citation:

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Assignee:

HITACHI LTD

International Classes:

G11B11/10; G11B11/105; G11B20/12; (IPC1-7): G11B11/10; G11B20/12

Attorney, Agent or Firm:

Kazuko Tomita

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