Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing for controlling recording light...
Reexamination Certificate
2003-02-19
2008-08-05
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal processing for controlling recording light...
C369S059120, C369S116000
Reexamination Certificate
active
07408860
ABSTRACT:
It is an object of the present invention to provide an information recording method for recording information in a data rewritable type optical recording medium having a plurality of information recording layers, which can form recording marks having good shapes. In the information recording method according to the present invention, a plurality of recording marks selected from a group consisting of several types of recording marks with different lengths are formed in an optical recording medium10having at least a stacked L0layer20and L1layer30by projecting a laser beam via a light incidence plane. In the case of forming at least one recording mark among the several types of recording marks in L0layer20, the recording powers of a top pulse Ttopand a last pulse Tlpof the laser beam are set to Pw0′ lower than the recording power Pw0of a multi-pulse Tmpthereof.
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Kato Tatsuya
Miura Hideaki
Mizushima Tetsuro
Giesy Adam R
Seed IP Law Group PLLC
TDK Corporation
Young Wayne
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