Data erasure device and data recording device using a clock sign

Details Data erasure device and data recording device using a clock sign Data erasure device and data recording device using a clock sign

1996-02-21

1998-02-10

Huber, P. W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369124, G11B 700

Patent

active

057176779

ABSTRACT:
A data erasure device for an optical recording medium which controls the effects of a temperature rise of an optical recording medium during an erasure operation. The data erasure device irradiates a light beam on a recording medium, and erases data recorded on the medium by increasing the temperature of a portion of the recording medium irradiated by the light beam. The light beam is caused to blink between two states during the erasure operation to produce a uniform erasure mark.

REFERENCES:
patent: 5469419 (1995-11-01), Iida et al.

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