Method and device for recording marks in an information...

Details Method and device for recording marks in an information... Method and device for recording marks in an information...

2011-08-23

2011-08-23

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

C369S059120, C369S275300, C369S116000

Reexamination Certificate

active

08004947

ABSTRACT:
A method of recording marks onto an optical disc, the optical disc comprising an information layer, by irradiating the information layer by a pulsed radiation beam, a mark (I3. . . I14) having a time length of nT, n representing an integer larger than one and T representing the length of one period of a reference clock, being recorded by a sequence comprising m write pulses separated by cooling periods, the write pulses within the sequence being allowed to have different time lengths, the write pulses comprised in sequences corresponding to marks of different time lengths being allowed to have different lengths, m being an integer number given by Floor(n/α), where Floor(n/α) defines the largest integer smaller than n/α, wherein a is an integer number larger than or equal to 2. The method characterized by modifying at least the sequence comprising the longest write pulse such that the longest write pulse is replaced by two write pulses.

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ISR/Written Opinion of the International Searching Authority PCT/IB2006051604.

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