Information recording method and optical recording medium...

Details Information recording method and optical recording medium... Information recording method and optical recording medium...

2006-06-27

2006-06-27

Huber, Paul W. (Department: 2653)

Dynamic information storage or retrieval

Storage medium structure

Specified material

C369S283000

Reexamination Certificate

active

07068591

ABSTRACT:
An information recording method including irradiating a phase change recording layer of an optical recording medium with either a multi-pulse laser light train having a recording power of Pw or laser light having an erasing power Pe to record a mark having a length nT in the recording layer, wherein n is an integer of from 3 to 14 and T represents a clock cycle, wherein the multi-pulse laser light train has a constitution such that a heating pulse and a cooling pulse are alternated and the number of heating pulses and the number of cooling pulses each increases by 1 when n increases by 2, and wherein when n is from 6 to 14, the last heating pulse and last cooling pulse have a pulse width of from 0.5T to 0.9T and from 0.7T to 1.5T, respectively.

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Communications dated Nov. 25, 2005, from the European Patent Office in European Patent Application No. 05 007 990.4-2210.

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