Optical information recording device and recording...

Details Optical information recording device and recording... Optical information recording device and recording...

2011-04-19

2011-04-19

Chow, Lixi (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal level detecting using a reference signal

C369S059110, C369S059230

Reexamination Certificate

active

07929393

ABSTRACT:
When recording recording information by forming on a recording medium a recording mark whose mark length is an integral multiple of the reference mark length according to a recording signal generated from a recording information signal, this method performs a process of: generating, after recording compensation recording information on the recording medium, a reproduction signal by reading out the compensation recording information; generating from the reproduction signal a reproduction clock whose cycle corresponds to the reference mark length; setting a signal level suitable for binarization determination of the reproduction signal as a distribution reference level, according to the difference in variation between white and black levels of the reproduction signal; and calculating the recording correction value for correcting the compensation recording signal, so that the reproduction signal becomes closer to the distribution reference level around a target cross timing determined based on the reproduction clock.

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